[Federal Register Volume 82, Number 150 (Monday, August 7, 2017)]
[Rules and Regulations]
[Pages 36858-36931]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-15464]



[[Page 36857]]

Vol. 82

Monday,

No. 150

August 7, 2017

Part II





Department of Energy





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10 CFR Parts 429 and 431





Energy Conservation Program: Test Procedure for Dedicated-Purpose Pool 
Pumps; Final Rule

  Federal Register / Vol. 82 , No. 150 / Monday, August 7, 2017 / Rules 
and Regulations  

[[Page 36858]]


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DEPARTMENT OF ENERGY

10 CFR Parts 429 and 431

[EERE-2016-BT-TP-0002]
RIN 1904-AD66


Energy Conservation Program: Test Procedure for Dedicated-Purpose 
Pool Pumps

AGENCY: Office of Energy Efficiency and Renewable Energy, Department of 
Energy.

ACTION: Final rule.

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SUMMARY: On September 20, 2016, the U.S. Department of Energy (DOE) 
issued a notice of proposed rulemaking (NOPR) to establish a new 
metric, as well as new definitions, test procedures, certification 
requirements, enforcement testing procedures, and labeling provisions 
for dedicated-purpose pool pumps (DPPPs). That proposed rulemaking 
serves as the basis for the final rule. Specifically, DOE is adopting a 
test procedure for measuring the weighted energy factor (WEF) for 
certain varieties of dedicated-purpose pool pumps. This final rule 
incorporates by reference certain sections of the industry test 
standard Hydraulic Institute (HI) 40.6-2014, ``Methods for Rotodynamic 
Pump Efficiency Testing'' as the basis of the adopted test procedure. 
The definitions, test procedures, certification requirements, 
enforcement testing procedures, and labeling provisions are based on 
the recommendations of the DPPP Working Group, which was established 
under the Appliance Standards Rulemaking Federal Advisory Committee 
(ASRAC).

DATES: The effective date of this rule is September 6, 2017. Compliance 
with the final rule will be mandatory for representations of WEF and 
other metrics addressed by the adopted test procedure made on or after 
February 5, 2018. The incorporation by reference of certain 
publications listed in this rule is approved by the Director of the 
Federal Register on September 6, 2017.

ADDRESSES: The docket, which includes Federal Register notices, public 
meeting attendee lists and transcripts, comments, and other supporting 
documents/materials, is available for review at www.regulations.gov. 
All documents in the docket are listed in the www.regulations.gov 
index. However, some documents listed in the index, such as those 
containing information that is exempt from public disclosure, may not 
be publicly available.
    A link to the docket Web page can be found at https://www.regulations.gov/docket?D=EERE-2016-BT-TP-0002. The docket Web page 
will contain simple instructions on how to access all documents, 
including public comments, in the docket.
    For further information on how to review the docket, contact the 
Appliance and Equipment Standards Program staff at (202) 586-6636 or by 
email: [email protected].

FOR FURTHER INFORMATION CONTACT: 
    Ms. Ashley Armstrong, U.S. Department of Energy, Office of Energy 
Efficiency and Renewable Energy, Building Technologies Office, EE-5B, 
1000 Independence Avenue SW., Washington, DC 20585-0121. Telephone: 
(202) 586-6590. Email: [email protected].
    Ms. Mary Greene, U.S. Department of Energy, Office of the General 
Counsel, GC-33, 1000 Independence Avenue SW., Washington, DC 20585-
0121. Telephone: (202) 586-1817. Email: [email protected].

SUPPLEMENTARY INFORMATION: This final rule incorporates by reference 
into 10 CFR parts 429 and 431 the following industry standards:
    (1) Hydraulic Institute (HI) 40.6-2014, (``HI 40.6-2014-B'') 
``Methods for Rotodynamic Pump Efficiency Testing,'' except for section 
40.6.4.1, ``Vertically suspended pumps''; section 40.6.4.2, 
``Submersible pumps''; section 40.6.5.3, ``Test report''; section 
40.6.5.5, ``Test conditions''; section 40.6.5.5.2, ``Speed of rotation 
during testing''; and section 40.6.6.1, ``Translation of test results 
to rated speed of rotation''; and Appendix A, Testing arrangements 
(normative): A.7, ``Testing at temperatures exceeding 30 [deg]C 
(86[emsp14][deg]F)''; and Appendix B, ``Reporting of test results 
(normative)''), copyright 2014.
    Copies of HI 40.6-2014 can be obtained from: The Hydraulic 
Institute at 6 Campus Drive, First Floor North, Parsippany, NJ 07054-
4406, (973) 267-9700, or by visiting www.pumps.org.
    (2) Canadian Standards Association (CSA) C747-2009 (Reaffirmed 
2014), ``Energy Efficiency Test Methods for Small Motors,'' CSA 
reaffirmed 2014, section 1, ``Scope''; section 3, ``Definitions''; 
section 5, ``General Test Requirements''; and section 6, ``Test 
Method.''
    Copies of CSA C747-2009 (RA 2014) can be obtained from: 5060 
Spectrum Way, Suite 100, Mississauga, Ontario, L4W 5N6, Canada, (800) 
463-6727, or by visiting www.csagroup.org.
    (3) IEEE Std 113-1985, ``IEEE Guide: Test Procedures for Direct-
Current Machines,'' copyright 1985, section 3.1, ``Instrument Selection 
Factors''; section 3.4 ``Power Measurement'': section 3.5 ``Power 
Sources''; section 4.1.2 ``Ambient Air''; section 4.1.4 ``Direction of 
Rotation''; section 5.4.1 ``Reference Conditions''; and section 5.4.3.2 
``Dynomometer or Torquemeter Method.''
    (4) IEEE Std 114-2010, ``IEEE Standard Test Procedure for Single-
Phase Induction Motors,'' approved September 30, 2010, section 3.2, 
``Tests with load''; section 4 ``Testing facilities''; section 5.2 
``Mechanical measurements''; section 5.3 ``Temperature measurements''; 
and section 6 ``Tests.''
    Copies of IEEE 113-1985 and IEEE 114-2010 and can be obtained from: 
IEEE, 45 Hoes Lane, P.O. Box 1331, Piscataway, NJ 08855-1331, (732) 
981-0060, or by visiting www.ieee.org.
    (5) NSF International (NSF)/American National Standards Institute 
(ANSI) Standard 50-2015, (``NSF/ANSI 50-2015''), ``Equipment for 
Swimming Pools, Spas, Hot Tubs and Other Recreational Water 
Facilities,'' Annex C, ``(normative) Test methods for the evaluation of 
centrifugal pumps,'' section C.3, ``Self-priming capability,'' ANSI 
approved January 26, 2015.
    Copies of NSF/ANSI 50-2015 can be obtained from: NSF International, 
789 N. Dixboro Road, Ann Arbor, MI 48105, (743) 769-8010, or by 
visiting www.nsf.org.
    (6) UL 1081, (``ANSI/UL 1081-2016''), ``Standard for Swimming Pool 
Pumps, Filters, and Chlorinators,'' 7th Edition, ANSI approved October 
21, 2016.
    Copies of ANSI/UL 1081-2016 can be obtained from: UL, 333 Pfingsten 
Road, Northbrook, IL 60062, (847) 272-8800, or by visiting http://ul.com.
    See section IV.N for additional information on these standards.

Table of Contents

I. Authority and Background
    A. Authority
    B. Background
II. Synopsis of the Final Rule
III. Discussion
    A. General Comments
    B. Definitions
    1. Existing Pump Definitions
    2. Definition of Dedicated-Purpose Pool Pump
    3. Pool Filter Pumps
    4. Other Varieties of Dedicated-Purpose Pool Pumps
    5. Storable and Rigid Electric Spa Pumps
    6. Applicability of Test Procedure Based on Pump Configuration
    7. Definitions Related to Dedicated-Purpose Pool Pump Speed 
Configurations and Controls
    8. Basic Model
    C. Rating Metric
    D. Test Methods for Different DPPP Categories and Configurations

[[Page 36859]]

    1. Self-Priming and Non-Self-Priming Pool Filter Pumps
    2. Waterfall Pumps
    3. Pressure Cleaner Booster Pumps
    4. Summary
    E. Determination of Pump Performance
    1. Incorporation by Reference of HI 40.6-2014
    2. Exceptions, Modifications and Additions to HI 40.6-2014
    F. Representations of Test Metrics
    1. Representations of Primary Efficiency Metrics
    2. Definition of Representation
    3. Impact on Voluntary and Other Regulatory Programs
    4. Request for Extension
    G. Additional Test Methods
    1. Determination of DPPP Capacity
    2. Determination of Self-Priming Capability
    3. Determination of Maximum Head
    H. Energy Factor Test Method
    I. Labeling Requirements
    J. Replacement DPPP Motors
    K. Certification and Enforcement Provisions for Dedicated-
Purpose Pool Pumps
    1. Sampling Plan
    2. Certification Requirements
    3. Enforcement Provisions
IV. Procedural Issues and Regulatory Review
    A. Review Under Executive Order 12866
    B. Review Under the Regulatory Flexibility Act
    1. Review of DPPP Manufacturers
    2. Burden of Conducting the DOE DPPP Test Procedure
    C. Review Under the Paperwork Reduction Act of 1995
    D. Review Under the National Environmental Policy Act of 1969
    E. Review Under Executive Order 13132
    F. Review Under Executive Order 12988
    G. Review Under the Unfunded Mandates Reform Act of 1995
    H. Review Under the Treasury and General Government 
Appropriations Act, 1999
    I. Review Under Executive Order 12630
    J. Review Under Treasury and General Government Appropriations 
Act, 2001
    K. Review Under Executive Order 13211
    L. Review Under Section 32 of the Federal Energy Administration 
Act of 1974
    M. Congressional Notification
    N. Description of Materials Incorporated by Reference
V. Approval of the Office of the Secretary

I. Authority and Background

    Pumps are included in the list of ``covered equipment'' for which 
the U.S. Department of Energy (DOE) is authorized to establish and 
amend energy conservation standards (ECSs) and test procedures (TPs). 
(42 U.S.C. 6311(1)(A)) Dedicated-purpose pool pumps (DPPPs), which are 
the subject of this rulemaking, are a kind of pump for which DOE is 
authorized to establish test procedures and energy conservation 
standards. In 2016, DOE published in the Federal Register two final 
rules establishing energy conservation standards and a test procedure 
for commercial and industrial pumps. 81 FR 4368 (Jan. 26, 2016) and 81 
FR 4086 (January 25, 2016), respectively. However, dedicated-purpose 
pool pumps were specifically excluded from those final rules. Based on 
recommendations of the industry and DOE's own analysis, DOE determined 
that dedicated-purpose pool pumps have a unique application and 
equipment characteristics that merit a separate analysis. As a result, 
DOE initiated separate rulemakings to establish energy conservation 
standards and test procedures for dedicated-purpose pool pumps. The 
following sections discuss DOE's authority to establish test procedures 
for dedicated-purpose pool pumps and relevant background information 
regarding DOE's consideration of establishing Federal regulations for 
this equipment.

A. Authority

    Title III of the Energy Policy and Conservation Act of 1975, as 
amended, (42 U.S.C. 6291, et seq.; ``EPCA'' or, ``the Act'') sets forth 
a variety of provisions designed to improve energy efficiency.\1\ Part 
C of Title III, which for editorial reasons was codified as Part A-1 
upon incorporation into the U.S. Code (42 U.S.C. 6311-6317), 
establishes the Energy Conservation Program for Certain Industrial 
Equipment. ``Pumps'' are listed as a type of industrial equipment 
covered by EPCA, although EPCA does not define the term ``pump.'' (42 
U.S.C. 6311(1)(A)) DOE defined ``pump'' in a test procedure final rule 
(January 2016 general pumps test procedure final rule) as equipment 
designed to move liquids (which may include entrained gases, free 
solids, and totally dissolved solids) by physical or mechanical action, 
and includes a bare pump and, if included by the manufacturer at the 
time of sale, mechanical equipment, driver, and controls. 81 FR 4086 
(Jan. 25, 2016). Dedicated-purpose pool pumps, which are the subject of 
this final rule, meet this definition of a pump and are covered under 
the pump equipment type.
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    \1\ All references to EPCA in this document refer to the statute 
as amended through the Energy Efficiency Improvement Act of 2015, 
Public Law 114-11 (Apr. 30, 2015).
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    Under EPCA, the energy conservation program consists essentially of 
four parts: (1) Testing, (2) labeling, (3) Federal energy conservation 
standards, and (4) certification and enforcement procedures. The 
testing requirements consist of test procedures that manufacturers of 
covered products must use as the basis for (1) certifying to DOE that 
their products comply with the applicable energy conservation standards 
adopted under EPCA, and (2) making representations about the efficiency 
of those products. Similarly, DOE must use these test procedures to 
determine whether the products comply with any relevant standards 
promulgated under EPCA.
    Under 42 U.S.C. 6293, EPCA sets forth the criteria and procedures 
DOE must follow when prescribing or amending test procedures for 
covered products. EPCA provides that any test procedures prescribed or 
amended under this section shall be reasonably designed to produce test 
results that measure energy efficiency, energy use, or estimated annual 
operating cost of a covered product during a representative average use 
cycle or period of use and shall not be unduly burdensome to conduct. 
(42 U.S.C. 6293(b)(3))
    In addition, if DOE determines that a test procedure amendment is 
warranted, DOE must publish a proposed test procedure and offer the 
public an opportunity to present oral and written comments on it. (42 
U.S.C. 6293(b)(2)) Finally, in any rulemaking to amend a test 
procedure, DOE must determine to what extent, if any, the proposed test 
procedure would alter the measured energy efficiency of any covered 
product as determined under the existing test procedure. (42 U.S.C. 
6293(e)(1))

B. Background

    Dedicated-purpose pool pumps are a style of pump for which DOE has 
not yet established a test procedure. Although in 2016 DOE completed 
final rules establishing energy conservation standards (81 FR 4368 
(Jan. 26, 2016); January 2016 general pumps ECS final rule) and a test 
procedure (81 FR 4086 (Jan. 25, 2016); January 2016 general pumps test 
procedure final rule) for certain categories and configurations of 
pumps, DOE declined in those rules to establish any requirements 
applicable to dedicated-purpose pool pumps because of their different 
equipment characteristics and applications. 81 FR 4086, 4094 (Jan. 25, 
2016).
    To begin a separate rulemaking for dedicated-purpose pool pumps, on 
May 8, 2015, DOE issued a Request for Information (RFI), hereafter 
referred to as the ``May 2015 DPPP RFI.'' The May 2015 DPPP RFI 
presented information and requested public comment about any 
definitions, metrics, test procedures, equipment characteristics, and 
typical applications relevant to DPPP equipment. 80 FR 26475. Following 
the publication of the May 2015 DPPP RFI, DOE began a process

[[Page 36860]]

through the Appliance Standards Rulemaking Federal Advisory Committee 
(ASRAC) to discuss conducting a negotiated rulemaking to develop 
standards and a test procedure for dedicated-purpose pool pumps as an 
alternative to the traditional notice and comment route that DOE had 
already begun. (Docket No. EERE-2015-BT-STD-0008) On August 25, 2015, 
DOE published a notice of intent to establish a negotiated rulemaking 
working group for dedicated-purpose pool pumps (as previously defined, 
the ``DPPP Working Group'') to negotiate, if possible, Federal 
standards for the energy efficiency of dedicated-purpose pool pumps and 
to announce the first public meeting. 80 FR 51483.
    The DPPP Working Group met four times between September and 
December 2015 \2\ and concluded its negotiations on December 8, 2015, 
with a consensus vote to approve a term sheet containing 
recommendations to DOE on scope, metric, and the basis of the test 
procedure (``December 2015 DPPP Working Group recommendations'').\3\ 
The term sheet containing these recommendations is available in the 
DPPP Working Group docket. (Docket No. EERE-2015-BT-STD-0008, No. 51) 
ASRAC subsequently voted unanimously to approve the December 2015 DPPP 
Working Group recommendations during a January 20, 2016, meeting. 
(Docket No. EERE-2015-BT-STD-0008, No. 0052)
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    \2\ Details of the negotiations sessions can be found in the 
public meeting transcripts that are posted to the docket for the 
DPPP Working Group (https://www.regulations.gov/docket?D=EERE-2015-BT-STD-0008).
    \3\ The ground rules of the DPPP Working Group define consensus 
as no more than three negative votes. (Docket No. EERE-2015-BT-0008-
0016 at p. 3) Concurrence was assumed absent overt dissent, 
evidenced by a negative vote. Abstention was not construed as a 
negative vote.
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    The DPPP Working Group also requested, and was ultimately granted, 
more time to discuss possible energy conservation standards for this 
equipment. (Docket No. EERE-2013-BT-NOC-0005, No. 71 at pp. 20-52) The 
meetings to discuss energy conservation standards commenced on March 
21, 2016, (81 FR 10152, 10153) and concluded on June 23, 2016, with 
approval of a second term sheet (June 2016 DPPP Working Group 
recommendations). This term sheet contained Working Group 
recommendations related to scope, definitions, energy conservation 
standards, performance standards or design requirements for various 
styles of pumps, applicable test procedure, and labeling for dedicated-
purpose pool pumps. (Docket No. EERE-2015-BT-STD-0008, No. 82) The 
definitions, DPPP test procedure, sampling provisions, enforcement 
requirements, and labeling requirements contained in this final rule 
reflect the recommendations of the DPPP Working Group contained in both 
the December 2015 and June 2016 DPPP Working Group recommendations.
    On September 20, 2016, DOE published a proposed test procedure 
rulemaking for dedicated-purpose pool pumps (September 2016 DPPP test 
procedure NOPR), which proposed to implement the recommendations of the 
DPPP Working Group. 81 FR 64580. On September 26, 2016, DOE held a 
public meeting to discuss and request comment on the September 2016 
DPPP test procedure NOPR (September 2016 DPPP test procedure NOPR 
public meeting).
    The test procedure adopted in this final rule reflects certain 
recommendations of the DPPP Working Group, as well as input from 
interested parties received in response to the September 2016 DPPP test 
procedure NOPR. Provisions of this final rule that are directly 
pertinent to any of the approved DPPP Working Group recommendations are 
specified with a citation to the December 2015 or June 2016 DPPP 
Working Group recommendations and are noted with the recommendation 
number (e.g., Docket No. EERE-2015-BT-STD-0008, No. #, Recommendation 
#X at p. Y). Additionally, in developing the provisions of this final 
rule, DOE also has referenced discussions from the DPPP Working Group 
meetings regarding potential actions or comments that may not have been 
formally approved as part of the DPPP Working Group recommendations. 
These references to discussions or suggestions of the DPPP Working 
Group not found in the DPPP Working Group recommendations will have a 
citation to meeting transcripts and the commenter, if applicable (e.g., 
Docket No. EERE-2015-BT-STD-0008, [Organization], No. X at p. Y).
    Finally, in this final rule, DOE responds to all comments received 
from interested parties in response to the proposals presented in the 
September 2016 DPPP test procedure NOPR, either during the September 
2016 DPPP test procedure NOPR public meeting or in subsequent written 
comments. In response to the September 2016 DPPP test procedure NOPR, 
DOE received 11 written comments in addition to the verbal comments 
made by interested parties during the September 2016 DPPP test 
procedure NOPR public meeting. The commenters included: The Southern 
California Gas Company (SCG), Southern California Edison (SCE), and San 
Diego Gas and Electric Company (SDG&E), collectively referred to herein 
as the California Investor-Owned Utilities (CA IOUs); a joint comment 
by the Appliance Standards Awareness Project (ASAP) and the Natural 
Resources Defense Council (NRDC); \4\ Pentair Aquatic Systems 
(Pentair); Hayward Industries, Inc. (Hayward); Waterway; Davey Water 
Products Pty Ltd. (Davey); the California Energy Commission (CEC); the 
Association of Pool & Spa Professionals (APSP); Nidec Motor Corporation 
(Nidec); Zodiac Pool Systems, Inc. (Zodiac); and the People's Republic 
of China (China). DOE identifies comments received in response to the 
September 2016 DPPP test procedure NOPR by the commenter, the number of 
document as listed in the docket maintained at www.regulations.gov 
(Docket No. EERE-2016-BT-TP-0002), and the page number of that document 
where the comment appears (for example: Hayward, No. 4 at p. 1). If a 
comment was made verbally during the September 2016 DPPP test procedure 
NOPR public meeting, DOE will also specifically identify those as being 
located in the NOPR public meeting transcript (for example: CA IOUs, 
public meeting transcript, No. 3 at p. 66).
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    \4\ ASAP was present at the September 2016 DPPP TP NOPR public 
meeting. When ASAP commented at the public meeting, comments will be 
indicated as ASAP. ASAP and NRDC submitted a joint written comment 
and written comments will be indicated as ASAP and NRDC.
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    Regarding comments, during the September 2016 DPPP test procedure 
public meeting, Hayward inquired if it was appropriate to suggest any 
modifications to previously negotiated language, if Hayward believed it 
could be helpful. (Hayward, Public Meeting Transcript, No. 3 at p. 20) 
DOE requested feedback on a number of items in the September 2016 DPPP 
test procedure NOPR and welcomed comment from interested parties on any 
of the proposals contained in the NOPR. DOE notes that DPPP Working 
Group ground rules stipulate that each party, except individuals that 
have previously voted negatively on the final term sheet, agrees not to 
file negative comments or speak negatively on the proposed rule or its 
preamble to the extent they have the same substance and effect as the 
term sheet. (Docket No. EERE-2015-BT-STD-0008, No. 16 at p. 5) However, 
these rules are not legally binding, but instead are good-faith 
principles to govern Working Group's negotiations. Under the 
Administrative Procedure Act, DOE must consider all relevant comments 
submitted concerning the

[[Page 36861]]

September 2016 DPPP test procedure NOPR, and make modifications to the 
proposals, as necessary, in this final rule. (5 U.S.C. 553(c)) Specific 
required modifications are discussed in their relevant sections.
    On January 18, 2017, DOE published a direct final rule containing 
energy conservation standards for dedicated-purpose pool pumps (e.g., 
the January 2017 DPPP DFR), based on the recommendations of the DPPP 
Working Group, with a compliance date of July 19, 2021. 82 FR 5650. 
After reviewing comments submitted during the 110-day comment period, 
on May 26, 2017, DOE published a confirmation of effective date and 
compliance date for the DFR. 82 FR 24218.

II. Synopsis of the Final Rule

    In this final rule, DOE is amending subpart Y to 10 CFR part 431 to 
include definitions and a test procedure applicable to dedicated-
purpose pool pumps. However, DOE is establishing a test procedure for 
only a specific subset of dedicated-purpose pool pumps. Specifically, 
this test procedure applies only to self-priming and non-self-priming 
pool filter pumps, waterfall pumps, and pressure cleaner booster pumps. 
The test procedure does not apply to integral cartridge-filter pool 
pumps, integral sand-filter pool pumps, storable electric spa pumps, or 
rigid electric spa pumps. The test procedure is applicable to those 
varieties of pool pumps for which DOE established performance-based 
standards in the January 2017 DPPP DFR (82 FR 5650, 5743), as well as 
additional categories of dedicated-purpose pool pumps for which the 
DPPP Working Group did not propose standards. (See section III.B.6 for 
more information on the applicability of the new test procedure to 
different DPPP varieties).
    In this final rule, DOE defines a new metric, the weighted energy 
factor (WEF), to characterize the energy performance of dedicated-
purpose pool pumps within the scope of this test procedure. As 
described further in section III.C, WEF is determined as a weighted 
average of water volumetric flow rate divided by the input power to the 
dedicated-purpose pool pump at different load points. The specific load 
points and weights depend on the variety of the dedicated-purpose pool 
pump and the number of operating speeds with which it is distributed in 
commerce. In addition, the DPPP test procedure includes a test method 
to determine the self-priming capability of pool filter pumps to 
effectively differentiate self-priming and non-self-priming pool filter 
pumps. Finally, the DPPP test procedure provides optional methods for 
determining the WEF for replacement DPPP motors.
    DOE's new test method includes measurements of volumetric flow rate 
and input power, both of which are required to calculate WEF, as well 
as other quantities to effectively characterize the rated DPPP 
performance (e.g., head, hydraulic output power, rotating speed). For 
consistent and uniform measurement of these values, DOE is 
incorporating by reference the test methods established in HI 40.6-
2014, ``Methods for Rotodynamic Pump Efficiency Testing,'' with certain 
exceptions. DOE reviewed the relevant sections of HI 40.6-2014 and 
determined that HI 40.6-2014, in conjunction with the additional test 
methods and calculations adopted in this test procedure, will produce 
test results that reflect the energy efficiency, energy use, or 
estimated operating costs of a dedicated-purpose pool pump during a 
representative average use cycle. (42 U.S.C. 6314(a)(2)) DOE also 
reviewed the burdens associated with conducting the test procedure, 
including HI 40.6-2014, and, based on the results of such analysis, 
found that the test procedure is not unduly burdensome to conduct. (42 
U.S.C. 6314(a)(2)) DOE's analysis of the burdens associated with the 
test procedure is presented in section IV.B.
    This final rule also establishes requirements regarding the 
sampling plan, certification requirements, and representations for 
dedicated-purpose pool pumps at subpart B of part 429 of title 10 of 
the Code of Federal Regulations. The sampling plan requirements are 
similar to those for several other types of commercial equipment and 
are appropriate for dedicated-purpose pool pumps based on the expected 
range of measurement uncertainty and manufacturing tolerances for this 
equipment (see section III.K.1 for more detailed information). As DOE's 
DPPP test procedure contains methods for calculating the energy factor 
(EF),\5\ overall (wire-to-water) efficiency, driver power input, DPPP 
nominal motor horsepower,\6\ DPPP motor total horsepower, DPPP service 
factor, pump power output (hydraulic horsepower), and true power factor 
(PF), DOE also is adopting provisions regarding allowable 
representations of energy consumption, energy efficiency, and other 
relevant metrics manufacturers may make regarding DPPP performance 
(section III.H). DOE is also clarifying the appropriate use of such 
metrics through the use of two appendices: Appendix B, which contains 
metrics and test methods applicable to testing dedicated-purpose pool 
pumps prior to the compliance date of the established energy 
conservation standards for such equipment (i.e., prior to July 19, 
2021), and appendix C, which contains metrics and test methods 
applicable to testing dedicated-purpose pool pumps on or after the 
compliance date of any applicable energy conservation standards (i.e., 
on and after July 19, 2021).
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    \5\ EF is a metric that is common in the DPPP industry and which 
describes the volume of water provided by a dedicated-purpose pool 
pump divided by the input power required to pump that amount of 
water in units of gallons per watt-hour (gal/Wh). The relevant test 
methods for determining EF are described in section III.F.
    \6\ In this final rule, DOE is adopting specific test methods 
and metrics applicable to DPPP nominal motor horsepower, DPPP total 
horsepower, DPPP service factor, and rated hydraulic horsepower of 
dedicated-purpose pool pumps. See section III.G.1 for a discussion 
of the different horsepower metrics applicable to dedicated-purpose 
pool pumps and the adopted testing requirements applicable to these 
metrics.
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    Starting on July 19, 2021, the compliance date for the energy 
conservation standards that DOE established for dedicated-purpose pool 
pumps, all dedicated-purpose pool pumps within the scope of those 
standards must be certified in accordance with the amended subpart Y of 
part 431 and the applicable sampling requirements in 10 CFR 429.59. DOE 
is also requiring that, beginning on July 19, 2021, certain 
certification and compliance information must be reported to DOE on an 
annual basis (section III.K.2). Similarly, all representations 
regarding the energy efficiency or energy use of dedicated-purpose pool 
pumps within the scope of this DPPP test procedure should be made by 
testing in accordance with the adopted DPPP test procedure (appendix B) 
beginning 180 days after the publication date of this test procedure 
final rule in the Federal Register. (42 U.S.C. 6314(d)(1)) DOE 
understands that manufacturers of dedicated-purpose pool pumps likely 
have historical test data (e.g., existing pump curves) that were 
developed with methods consistent with the new DOE test procedure. DOE 
also understands that the DPPP test procedure is based on the same 
testing methodology used to generate most existing pump performance 
information. Consequently, DOE does not expect that manufacturers will 
need to regenerate all of the historical test data, as long as the 
original rating method is consistent with the methods adopted in this 
final rule, and the original tested units remain

[[Page 36862]]

representative of the basic model's current design. If the testing 
methods used to generate historical ratings for DPPP basic models are 
substantially different from those adopted in this final rule or the 
manufacturer has changed the design of the basic model, the 
representations resulting from the historical methods would no longer 
be valid. This is discussed in more detail in section III.F.

III. Discussion

    In this final rule, DOE amends subpart Y of 10 CFR part 431 to add 
a new DPPP test procedure and related definitions, amends 10 CFR 429.59 
to add a new sampling plan for dedicated-purpose pool pumps, and amends 
10 CFR 429.110 and 429.134 to add new enforcement provisions for this 
equipment. The amendments are shown in Table III.1.

  Table III.1--Summary of Amendments in This Final Rule, Their Location Within the Code of Federal Regulations,
                                     and the Applicable Preamble Discussion
----------------------------------------------------------------------------------------------------------------
                                                                                            Applicable preamble
              Location                      Amendment            Summary of additions           discussion
----------------------------------------------------------------------------------------------------------------
10 CFR 429.59......................  Test Procedure          Minimum number of dedicated- Section III.K and
                                      Sampling Plan and       purpose pool pumps to be     III.H.
                                      Certification           tested to rate a DPPP
                                      Requirements.           basic model, determination
                                                              of representative values,
                                                              and certification
                                                              reporting requirements.
10 CFR 429.110 & 429.134...........  Enforcement Provisions  Method for DOE               Section III.K.
                                                              determination of
                                                              compliance of DPPP basic
                                                              models.
10 CFR 431.462.....................  Definitions...........  Definitions pertinent to     Section III.B.
                                                              categorizing and testing
                                                              of dedicated-purpose pool
                                                              pumps.
10 CFR 431.464, Appendix B, &        Test Procedure........  Instructions for             Sections III.C, III.D,
 Appendix C.                                                  determining the WEF (and     III.E, III.H, III.F,
                                                              other applicable             and III.J.
                                                              performance
                                                              characteristics) for
                                                              applicable varieties of
                                                              dedicated-purpose pool
                                                              pumps and replacement DPPP
                                                              motors.
10 CFR 431.466.....................  Labeling..............  Requirements for labeling    Section III.I.
                                                              dedicated-purpose pool
                                                              pumps.
----------------------------------------------------------------------------------------------------------------

    The following sections discuss comments received from interested 
parties and DOE's final adopted provisions regarding (A) the scope of 
this rulemaking; (B) definitions related to the categorizing and 
testing of dedicated-purpose pool pumps; (C) the metric used to 
describe the energy performance of dedicated-purpose pool pumps; (D) 
the test procedure for different varieties of dedicated-purpose pool 
pumps; (E) the incorporation of HI 40.6-2014 as the test method for 
determining pump performance; (F) representations of energy use and 
energy efficiency; (G) additional test methods necessary to determine 
rated hydraulic horsepower,\7\ other DPPP horsepower metrics,\8\ and 
the self-priming capability of dedicated-purpose pool pumps; (H) 
labeling requirements for dedicated-purpose pool pumps; (I) an optional 
test method for replacement DPPP motors; and (J) certification and 
enforcement provisions for tested DPPP models.
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    \7\ Rated hydraulic horsepower refers to the hydraulic 
horsepower at maximum speed and full impeller diameter on the 
reference curve for the rated pump and is the metric DOE is 
referencing to describe the capacity of dedicated-purpose pool 
pumps. (See section III.G.1.)
    \8\ DOE is adopting, based on the June 2016 DPPP Working Group 
recommendations, standardized methods for determining nominal motor 
horsepower, total horsepower, and service factor of a dedicated-
purpose pool pump to support labeling provisions. The adopted test 
methods are discussed in section III.F and the labeling requirements 
are discussed in section III.I.
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A. General Comments

    CA IOUs submitted a general comment expressing their support of the 
test procedure proposed in the September 2016 DPPP test procedure NOPR 
and stating that the proposal reflected issues negotiated in the DPPP 
Working Group in 2015 and 2016. CA IOUs also encouraged DOE to publish 
a final rule for both the test procedure and energy conservation 
standards by the end of 2016 so that the standards can take effect as 
soon as possible. (CA IOUs, No. 9 at pp. 1-2) DOE appreciates the 
support of CA IOUs and has finalized this test procedure final rule in 
2016. DOE addressed the energy conservation standards recommended by 
the DPPP Working Group in the January 2017 DPPP DFR. 82 FR 5650.
    In response to the September 2016 DPPP test procedure NOPR, Hayward 
raised concerns on the number of requests for comment and new items 
outside the DPPP Working Group discussions and the possible need for a 
supplemental NOPR (SNOPR). (Hayward, Public Meeting Transcript, No. 3 
at pp. 5-6) DOE acknowledges that in the September 2016 DPPP test 
procedure NOPR, DOE proposed a new DPPP test procedure, as well as 
several items recommended by the DPPP Working Group related to DPPP 
test procedure, such as definitions and test methods. In addition, the 
September 2016 DPPP test procedure NOPR contained several items 
recommended by the DPPP Working Group that are not directly related to 
the DPPP test procedure, such as labeling and certification 
requirements. Finally, the September 2016 DPPP test procedure NOPR 
contained a number of items that were not directly discussed or 
recommended by the DPPP Working Group, but are necessary to fully 
implement DOE's regulatory framework, such as a sampling plan for the 
determination of representative values and enforcement requirements.
    While DOE recognizes that the number and breadth of the proposals 
contained in the September 2016 DPPP test procedure NOPR was 
significant, DOE maintains that many of the items are necessary to 
ensure DOE's DPPP regulations, once adopted, are comprehensive and 
robust. For example, the sampling plan provisions are necessary to 
describe how to determine uniform and consistent representative values 
from the test procedure results.
    In addition, as discussed at length in the DPPP Working Group 
negotiations, the energy conservation standard recommended by the DPPP 
Working Group contains both performance and prescriptive requirements 
for different varieties of dedicated-purpose pool pumps, which must be 
implemented in a direct final rule. However, such a direct final rule 
can only contain the explicit consensus recommendations of the DPPP 
Working Group, since any additional provisions would not have the 
opportunity for public comment

[[Page 36863]]

through the direct final rule process. Therefore, some items typically 
implemented in standards rulemakings, such as certification reporting 
requirements and labeling provisions, were included in the September 
2016 DPPP test procedure NOPR, because, while they implemented the 
recommendations of the DPPP Working Group, they contained additional 
details and minor provisions not explicitly recommended by the DPPP 
Working Group (see section III.I and III.K.2 for more information on 
the labeling and certification provisions, respectively).
    Therefore, while DOE understands that the breadth of the proposals 
contained in the September 2016 DPPP test procedure NOPR may be greater 
than typical test procedure NOPRs, DOE believes that all the proposals 
are necessary to fully implement the recommendations of the DPPP 
Working Group and ensure comprehensive and robust DPPP regulations. In 
addition, DOE notes that interested parties had the opportunity to 
comment on all DOE's proposals in response to the September 2016 DPPP 
test procedure NOPR and DOE has provided answers to all comments, and, 
where appropriate, has amended its proposal in response to the 
comments. Therefore, DOE believes that an SNOPR is not necessary.
    In written comments, APSP and Pentair noted that DOE based the 
various efficiency levels considered for energy conservation standards 
during the DPPP Working Group negotiations on the WEF scores estimated 
for individual pump models using data from the ENERGY STAR Qualified 
Products List database. Pentair commented, and APSP agreed, that 
analysis they conducted using actual test data generated WEF scores 
that were different from DOE's estimates, sometimes by up to 20 
percent. APSP and Pentair recommended that DOE reevaluate the various 
efficiency levels using actual test data instead of estimates based on 
ENERGY STAR data points. (APSP, No. 8 at p. 2; Pentair, No. 11 at p. 6) 
DOE interprets APSP and Pentair's comments to be specific to self-
priming pool filter pumps, which are the only variety of pool pump that 
are listed in the ENERGY STAR Qualified Products List database.\9\
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    \9\ ENERGY STAR maintains a database of certified products, 
including pool pumps. See https://www.energystar.gov/productfinder/product/certified-pool-pumps/results.
---------------------------------------------------------------------------

    In response to APSP and Pentair, DOE notes that the tested data 
points for all self-priming pool filter pumps were based on 
certification data from the ENERGY STAR Qualified Products List 
database, as well as other entities besides ENERGY STAR. DOE 
incorporated certification data from the CEC (including current and 
historical data), APSP, and ENERGY STAR, and included other data 
provided by DPPP manufacturers in DOE's Self-Priming Pool Filter Pump 
database.\10\ (Docket No. EERE-2015-BT-STD-0008, No. 94 at pp. 24-30) 
DOE presumes the data in these databases to be accurate and determined 
in accordance with the appropriate test procedures. As discussed 
further in section III.H, these test procedures are consistent with the 
test procedure recommended by the DPPP Working Group and adopted by DOE 
in this final rule. Therefore, the data in the ENERGY STAR, CEC, and 
APSP databases are deemed to be consistent with data generated in 
accordance with the adopted DPPP test procedure.
---------------------------------------------------------------------------

    \10\ Docket No. EERE-2015-BT-STD-0008, No. 102.
---------------------------------------------------------------------------

    DOE notes that WEF scores used to establish efficiency levels for 
single-speed and two-speed self-priming pool filter pumps were directly 
calculated from actual known test data points at appropriate load 
points, and no mathematical estimations were employed. However, as 
discussed in the DPPP Working Group, DOE acknowledges that, for 
variable-speed self-priming pool filter pumps, the WEF scores used to 
establish efficiency levels considered for energy conservation 
standards were mathematically estimated from certain known test data 
points contained in DOE's database. (Docket No. EERE-2015-BT-STD-0008, 
No. 94 at pp. 26-31)
    DOE pursued the mathematical estimation of WEF scores because the 
variable-speed self-priming pool filter pump performance data contained 
in above-mentioned databases does not always align with the load points 
(i.e., speed settings) needed to evaluate each pump against the WEF 
metric. Specifically, DOE's mathematical estimations were derived from 
a regression analyses of known variable-speed self-priming pool filter 
pump data points. Furthermore, as DOE described during the DPPP Working 
Group meetings, DOE used actual test stand data provided by DPPP 
manufacturers to validate the estimation methodology. (Docket No. EERE-
2015-BT-STD-0008, No. 94 at pp. 28-34) Ultimately, DOE publically 
presented its regression methodology to the DPPP Working Group for 
input and no members of the DPPP Working Group offered sustained 
objections to the methodology or results during the Working Group 
meetings.\11\ (Docket No. EERE-2015-BT-STD-0008, No. 94 at pp. 24-34)
---------------------------------------------------------------------------

    \11\ The CA IOUs initially objected to the results of the 
regression methodology, saying that previous CA IOU efforts had 
gathered data that did not fit the regression trend presented by 
DOE. (Docket No. EERE-2015-BT-STD-0008, CA IOUs, No. 94 at pp. 30-
31) In a subsequent meeting the CA IOUs rescinded their objection 
and stated that previous CA IOUs analysis shows the same results as 
DOE's regression methodology. (Docket No. EERE-2015-BT-STD-0008, CA 
IOUs, No. 95 at pp. 4-5).
---------------------------------------------------------------------------

    In addition, and as discussed in the DPPP Working Group, DOE 
acknowledges that the estimated WEF scores for variable-speed pumps are 
subject to mathematically uncertainty. As a part of the DPPP Working 
Group meetings, DOE mathematically quantified this uncertainty and 
provided the DPPP Working Group with a revised variable-speed 
efficiency level option that would conservatively account for this 
uncertainty. (Docket No. EERE-2015-BT-STD-0008, No. 100 at pp. 118-121) 
Ultimately, as a part of their energy conservation standard 
negotiations, the DPPP Working Group decided not to account for such 
uncertainty in the variable-speed efficiency level. (Docket No. EERE-
2015-BT-STD-0008, No. 92 at pp. 281-283) Consequently, DOE believes 
that the concept of WEF score uncertainty for variable-speed pumps was 
well understood by the DPPP Working Group, including the commenters.
    In general, DOE developed efficiency level options for the DPPP 
Working Group based on the best data and analytical methods that were 
available at the time. In light of the concerns raised by APSP and 
Pentair, DOE reevaluated its variable-speed WEF estimation methodology, 
but found no technical inaccuracies. In the absence of new data (noting 
that APSP and Pentair did not submit to DOE any test data to 
substantiate their claims), DOE has no means to adjust its variable-
speed WEF estimation methodology at this time. Furthermore, DOE 
believes that data uncertainty concerns raised by APSP and Pentair were 
sufficiently considered by the DPPP Working Group, and adjustment to 
DOE's analysis, based on new test data (if made available), would not 
materially impact the recommendations of the DPPP Working Group. 
Therefore, DOE will not reevaluate self-priming pool filter pump 
efficiency levels using new test data, as recommended by APSP and 
Pentair. DOE notes that DOE established energy conservation standards 
as part of the January 2017 DPPP DFR. 82 FR 5650, 5743.
    In written comments, Nidec stated that it believed that there 
should be a

[[Page 36864]]

public comment period for the related energy conservation standards and 
requested information on the timing of the ECS rulemaking as well as 
the opportunity for public review and comment. (Nidec, No. 10 at p. 4) 
DOE notes that the related energy conservation standards were 
negotiated through the DPPP Working Group and approved by ASRAC,\12\ 
and that notice of all meetings were published in the Federal 
Register.\13\ All meetings were open and provided opportunity for 
public comment. In addition, the public had 110 days to submit public 
comments on the DFR, which were considered by DOE prior to confirming 
the effective date and compliance date for the energy conservation 
standards. 82 FR 24218; May 26, 2017.
---------------------------------------------------------------------------

    \12\ Docket No. EERE-2013-BT-NOC-0005, No. 87.
    \13\ See https://www1.eere.energy.gov/buildings/appliance_standards/standards.aspx?productid=67 and https://www.regulations.gov/docket?D=EERE-2015-BT-STD-0008.
---------------------------------------------------------------------------

B. Definitions

    In this final rule, DOE is adopting definitions for the term 
dedicated-purpose pool pump, several sub-varieties of dedicated-purpose 
pool pumps, and the variations of DPPP operating speed configurations. 
DOE is also adopting definitions pertinent to categorizing and testing 
dedicated-purpose pool pumps in accordance with the DOE test procedure. 
In general, ASAP and NRDC commented that they agreed with DOE's 
proposed definitions. (ASAP and NRDC, No. 12 at p. 1) DOE appreciates 
the support of ASAP and NRDC. DOE presents these definitions in the 
subsequent sections. In addition, DOE is adopting definitions and 
methods for determining several terms related to describing DPPP 
capacity, including ``rated hydraulic horsepower,'' ``dedicated-purpose 
pool pump nominal motor horsepower,'' ``dedicated-purpose pool pump 
service factor,'' and ``dedicated-purpose pool pump motor total 
horsepower.'' These terms are discussed in detail in section III.G.1.
1. Existing Pump Definitions
    DOE notes that because dedicated-purpose pool pumps are a style of 
pump, some terms defined at 10 CFR 431.462, as adopted in the January 
2016 general pumps test procedure final rule, also apply to dedicated-
purpose pool pumps, including bare pump, mechanical equipment, driver, 
and control. 81 FR 4086, 4090-4091 (Jan. 25, 2016). In addition, as 
dedicated-purpose pool pumps are end suction pumps, DOE believes the 
definition for end suction pump established in the January 2016 general 
pumps test procedure final rule also applies to dedicated-purpose pool 
pumps. In the January 2016 general pumps test procedure final rule, DOE 
defined ``end suction pump'' as a single-stage, rotodynamic pump in 
which the liquid enters the bare pump in a direction parallel to the 
impeller shaft and on the side opposite the bare pump's driver-end. The 
liquid is discharged through a volute in a plane perpendicular to the 
shaft. 81 FR 4086, 4146 (Jan. 25, 2016). DOE notes that, as it is 
referenced in the definition for end suction pump, the definition for 
rotodynamic pump established in the January 2016 general pumps test 
procedure final rule also applies to dedicated-purpose pool pumps. Id. 
at 4147.
    In the September 2016 DPPP test procedure NOPR, DOE used the term 
``dry rotor'' as a part of the definition of pressure cleaner booster 
pumps. 81 FR 64580, 64591 (Sept. 20, 2016). DOE also discussed how the 
term ``dry rotor pump'' applies to dedicated-purpose pool pumps and 
asserted that, to DOE's knowledge, all dedicated-purpose pool pumps are 
dry rotor (as defined in the January 2016 general pumps final rule 
\14\). 81 FR 64580, 64587 (Sept. 20, 2016) DOE requested comment on the 
assertion that all dedicated-purpose pool pumps are dry rotor pumps.
---------------------------------------------------------------------------

    \14\ DOE defines ``dry rotor pump'' as a pump in which the motor 
rotor is not immersed in the pumped fluid. 10 CFR 431.462.
---------------------------------------------------------------------------

    In written comments, APSP, Hayward, and Zodiac commented that all 
of the dedicated-purpose pool pumps covered by this rule are typically 
dry rotor pumps. (APSP, No. 8 at p.3; Hayward, No. 6 at p. 1; Zodiac, 
No. 13 at p. 1) However, APSP and Zodiac also requested a clearer 
definition of dry rotor and wet rotor style pumps. APSP, No. 8 at p. 3; 
Zodiac, No. 13 at p. 1) APSP, Hayward, and Zodiac also inquired how a 
wet rotor pump (such as a pump with a water-cooled motor) may be 
impacted by the dry rotor definition. (APSP, No. 8 at p.3; Hayward, No. 
6 at p. 1; Zodiac, No. 13 at p. 1)
    In response to APSP and Zodiac's request for clarification 
regarding the terms dry rotor and wet rotor, DOE defined dry rotor and 
wet rotor pumps in the January 2016 general pumps test procedure final 
rule. 81 FR 4086, 4146 (Jan. 25, 2016). Dry rotor pump means a pump in 
which the motor rotor is not immersed in the pumped fluid. Conversely, 
a wet rotor pump is one in which the motor rotor is immersed in the 
pumped liquid. Id. at 4101 (Jan. 25, 2016) The rotor is the portion of 
the motor that rotates and provides torque to output shaft (which may 
be integral to the rotor). For most motors varieties, including all 
known dedicated-purpose pool pump motors, the rotor is an internal 
component of the motor, which resides inside the motor stator. If any 
significant amount of liquid is present in-between the stator and rotor 
during operation, the rotation of the motor rotor will cause the liquid 
to surround or cover the rotor (i.e., immerse it). Consequently, such a 
configuration would be considered a wet rotor pump. Alternatively, if a 
dedicated-purpose pool pump has no significant amount of liquid between 
stator and rotor, the rotation of the rotation will not cause the 
liquid to surround or cover the rotor (i.e., immerse it), and thus such 
a configuration would not be considered a dry rotor pump. DOE notes 
that the water-resistance of, or ability to immerse, the exterior 
casing of a motor has no relation to the definition of wet rotor and 
dry rotor pump.
    DOE believes these definitions are clear and unambiguous and do not 
require further clarification.
    Regarding how a wet rotor pump would be treated under DOE's new 
dedicated-purpose pool pump regulations, DOE understands that pressure 
cleaner booster pumps are the only variety of dedicated-purpose pool 
pump that use the term ``dry rotor'' within the definition (i.e., a 
pressure cleaner booster pump is a dry rotor pump). Consequently, the 
test procedure will only be applicable to dry rotor pressure cleaner 
booster pumps, as non-dry rotor variants would not meet the definition 
of a pressure cleaner booster pump. The remaining varieties of 
dedicated purpose pool pumps make no specification to whether the pump 
is, or is not, dry rotor. Consequently, both dry rotor and non-dry 
rotor pumps will meet certain definitions established in this final 
rule, and would thus be subject to the test procedure.
    DOE received no other comments regarding the use of dry rotor, 
within the definition of pressure cleaner booster pump. Therefore, the 
term dry rotor pump will remain a part of the definition of pressure 
cleaner booster pump.
    Additional definitions from the January 2016 general pumps test 
procedure final rule that apply to dedicated-purpose pool pumps, 
include the definition of basic model (discussed further in section 
III.B.8), the definitions incorporated by reference from HI 40.6-2014 
(discussed further in section III.E.1), and the definition of self-
priming pump (discussed further in section III.B.3.a). While other 
terms may be applicable to the description of

[[Page 36865]]

dedicated-purpose pool pumps, they are not referenced in any of the 
DPPP definitions or specifications of the DPPP test procedure.
2. Definition of Dedicated-Purpose Pool Pump
    Consistent with the recommendations of the DPPP Working Group, DOE 
proposed in the September 2016 DPPP test procedure NOPR to define 
dedicated-purpose pool pump as follows:
    Dedicated-purpose pool pump comprises self-priming pool filter 
pumps, non-self-priming pool filter pumps, waterfall pumps, pressure 
cleaner booster pumps, integral sand-filter pool pumps, integral-
cartridge filter pool pumps, storable electric spa pumps, and rigid 
electric spa pumps. 81 FR 64580, 64587 (Sept. 20, 2016).
    DOE received no comments in response to the proposed definition of 
dedicated-purpose pool pump. Therefore, DOE is adopting the definition 
of dedicated-purpose pool pump as proposed in the September 2016 DPPP 
test procedure NOPR.
    In the September 2016 DPPP test procedure NOPR, DOE also proposed 
definitions for each DPPP variety based on DPPP Working Group 
recommendations. These definitions are discussed in more detail in 
sections III.B.3, III.B.4, and III.B.5.
3. Pool Filter Pumps
    Pool filter pumps are the most common style of dedicated-purpose 
pool pump. A ``pool filter pump'' or ``pool circulation pump'' is 
typically used to refer to an end suction style pump that circulates 
water through a pool and filtration system and removes large debris 
using a basket strainer or other device. Consistent with the 
recommendations of the DPPP Working Group, in the September 2016 DPPP 
test procedure NOPR, DOE proposed to define pool filter pump as an end 
suction pump that
    (a) either:
    (1) Includes an integrated basket strainer, or
    (2) does not include an integrated basket strainer, but requires a 
basket strainer for operation, as stated in manufacturer literature 
provided with the pump; and
    (b) may be distributed in commerce connected to, or packaged with, 
a sand filter, removable cartridge filter, or other filtration 
accessory, so long as the filtration accessory is connected with 
consumer-removable connections that allow the pump to be plumbed to 
bypass the filtration accessory. (Docket No. EERE-2015-BT-STD-0008, No. 
51 Recommendation #4 at pp. 2-3); 81 FR 64580, 64587 (Sept. 20, 2016).
    In the September 2016 DPPP test procedure NOPR, DOE requested 
comment on the proposed definition of pool filter pump. No comments, 
negative or positive, were received regarding the proposed definition 
of pool filter pump. Therefore, in this final rule, DOE adopts the 
definition of pool filter pump as proposed in the September 2016 DPPP 
test procedure NOPR.
a. Definition of a Basket Strainer and Filtration Accessories
    The definition of pool filter pump includes the use of a basket 
strainer to differentiate pool filter pumps from other varieties of end 
suction pumps. To clearly and unambiguously establish what would be 
considered a basket strainer when applying the pool filter pump 
definition, the DPPP Working Group recommended to define ``basket 
strainer'' as ``a perforated or otherwise porous receptacle that 
prevents solid debris from entering a pump, when mounted within a 
housing on the suction side of a pump. The basket strainer receptacle 
is capable of passing spherical solids of 1 mm in diameter, and can be 
removed by hand or using only simple tools. Simple tools include but 
are not limited to a screwdriver, pliers, and an open-ended wrench.'' 
(Docket No. EERE-2015-BT-STD-0008, No. 51 Recommendation #4 at pp. 2-3)
    To establish what would be considered a ``removable cartridge 
filter'' and to differentiate removable cartridge filters from basket 
strainers, the DPPP Working Group recommended that the definitions of 
basket strainer and removable cartridge filter include a specification 
for the diameter of spherical solid that the basket strainer or filter 
component is capable of passing. The DPPP Working Group recommended a 
definition for ``removable cartridge filter'' as ``a filter component 
with fixed dimensions that captures and removes suspended particles 
from water flowing through the unit. The removable cartridge filter is 
not capable of passing spherical solids of 1 mm in diameter, can be 
removed from the filter housing by hand or using only simple tools, and 
is not a sand filter. Simple tools include but are not limited to a 
screwdriver, pliers, and an open-ended wrench.'' (Docket No. EERE-2015-
BT-STD-0008, No. 51 Recommendation #4 at pp. 2-3)
    Similarly, to clearly differentiate sand filters from other 
filtration apparatuses, such as basket strainers and removable 
cartridge filters, the DPPP Working Group recommended defining ``sand 
filter'' as ``a device designed to filter water through sand or an 
alternate sand-type media.'' The definition for sand filter is intended 
to include all depth filters that allow fluid to pass through while 
retaining particulates and debris in a porous filtration medium. In the 
DPPP equipment industry, such a filter is most commonly made with sand, 
but could also be made with other media such as diatomaceous earth. 
(Docket No. EERE-2015-BT-STD-0008, No. 58 at pp. 91-96)
    In the September 2016 DPPP test procedure NOPR, DOE noted that 
these definitions are useful in clearly differentiating different 
styles of pool filter pumps, including integral cartridge-filter and 
sand-filter pool pumps, from those that have non-integral filtration 
accessories. As such, DOE proposed adopting the definitions for basket 
strainer, removable cartridge filter, and sand filter, as recommended 
by the DPPP Working Group. 81 FR 64580; 64587-88 (Sept. 20, 2016).
    In response to the proposed definition of basket strainer, Pentair 
submitted a written comment stating that there is a possibility of 
manufacturers using the 1mm size restriction as a loophole to create a 
strainer basket with very small openings, which would not meet DOE's 
definition for pool filter pumps. Pentair acknowledged that doing so 
would significantly limit the utility of the pump in pool filtration 
applications. However, Pentair noted that consumers could throw away 
the original basket strainer and replace it with one that has more 
reasonable opening size. (Pentair, No. 11 at p. 1)
    In response, DOE acknowledges Pentair's concern regarding the 
potential for manufacturers to circumvent the regulation through 
adjusting the opening size on the basket strainer. In the DPPP Working 
Group negotiations, the DPPP Working Group discussed the opening size 
as the clearest and most unambiguous way to differentiate between 
basket strainers and removable cartridge filters. During that 
discussion, Hayward raised the possibility that the filter basket 
opening size may limit future design flexibility. DOE responded that 
DOE definitions and analysis are developed around filter basket designs 
that are currently available on the market. DOE also noted that a 
filtration apparatus that does not meet the definition established in 
this rule could be considered in a future rulemakings, if such designs 
are developed. (Docket No. EERE-2015-BT-STD-0008, CA IOUs, DOE, 
Waterway, and Zodiac, No. 53 at pp. 13-19) Also, as noted by Pentair, 
the opening size of the basket filter directly impacts its utility as a

[[Page 36866]]

filtration device. Therefore, DOE believes that the market will 
effectively discourage manufacturers from producing pool filter pumps 
with ineffective basket filters. However, DOE will monitor the market 
as this test procedure and associated energy conservation standards 
take effect and, if DOE observes any such circumvention, DOE may 
reconsider the definition of basket strainer as necessary.
    DOE received no other comments related to the proposed definitions 
of basket strainer, removable cartridge filter, or sand filter. 
Therefore, DOE is adopting the definitions of these terms as proposed 
in the September 2016 DPPP test procedure NOPR.
b. Self-Priming and Non-Self-Priming Pool Filter Pumps
    All pool filter pumps on the market are either self-priming or non-
self-priming. Self-priming pumps are able to lift liquid that 
originates below the centerline of the pump inlet and, after initial 
manual priming, are able to subsequently re-prime without the use of 
external vacuum sources, manual filling, or a foot valve. In contrast, 
non-self-priming pumps must be manually primed prior to start up each 
time. Accordingly, self-priming pumps are constructed in a different 
manner than non-self-priming pumps and have different energy use 
characteristics. Specifically, self-priming pool filter pumps typically 
incorporate a diffuser that maintains the prime on the pump between 
periods of operation. The diffuser affects the energy performance of 
the pump because it can decrease the maximum achievable energy 
efficiency.
    In addition, whether a pool filter pump is self-priming or not also 
impacts the typical applications for self-priming versus non-self-
priming pool filter pumps. Specifically, in the DPPP equipment 
industry, self-priming pool filter pumps are often referred to as 
``inground pool pumps'' and non-self-priming pool filter pumps are 
often referred to as ``aboveground pool pumps.'' Accordingly, the DPPP 
Working Group proposed to analyze self-priming and non-self-priming 
pool filter pumps separately. (Docket No. EERE-2015-BT-STD-0008, No. 51 
Recommendation #2A at p. 2)
    In the September 2016 DPPP test procedure NOPR, based on feedback 
from the DPPP Working Group, DOE proposed definitions for self-priming 
and non-self-priming pool filter pumps, as well as a method to 
differentiate the two. Specifically, in the September 2016 DPPP test 
procedure NOPR, DOE proposed the following definitions for self-priming 
and non-self-priming pool filter pumps:
    Self-priming pool filter pump means a pool filter pump that is 
certified under NSF/ANSI 50-2015 \15\ to be self-priming or is capable 
of re-priming to a vertical lift of at least 5.0 feet with a true 
priming time less than or equal to 10.0 minutes, when tested in 
accordance with NSF/ANSI 50-2015, and is not a waterfall pump.
---------------------------------------------------------------------------

    \15\ NSF International (NSF)/ANSI Standard 50-2015, (``NSF/ANSI 
50-2015''), ``Equipment for Swimming Pools, Spas, hot Tubs and Other 
Recreational Water Facilities.''
---------------------------------------------------------------------------

    Non-self-priming pool filter pump means a pool filter pump that is 
not certified under NSF/ANSI 50-2015 to be self-priming and is not 
capable of re-priming to a vertical lift of at least 5.0 feet with a 
true priming time less than or equal to 10.0 minutes, when tested in 
accordance with NSF/ANSI 50-2015, and is not a waterfall pump. 81 FR 
64580, 64647-68 (Sept. 20, 2016).
    The definitions are consistent with the NSF/ANSI 50-2015 self-
priming designation such that any pumps certified as self-priming under 
NSF/ANSI 50-2015 would be treated as self-priming pool filter pumps 
under the DOE regulations, even if such a pump was certified based on 
manufacturer's specified or recommended vertical lift and/or true 
priming time. However, as certification with NSF/ANSI 50-2015 is 
voluntary, the definitions also adopt specific criteria in terms of 
vertical lift and true priming time that are applicable to any pool 
filter pumps not certified as self-priming under NSF/ANSI 50-2015. The 
criterion for vertical lift is specified as 5.0 feet, consistent with 
the NSF/ANSI 50-2015 requirement. This ensures that all pool filter 
pumps that can achieve a vertical lift of 5.0 feet (within the required 
true priming time), whether they are certified with NSF/ANSI or not, 
would be considered a self-priming pool filter pump under DOE's 
regulations.
    The criterion for true priming time recommended by the DPPP Working 
Group and proposed in the September 2016 DPPP test procedure NOPR is 
10.0 minutes, as opposed to the 6 minutes specified in NSF/ANSI 50-
2015. 81 FR 64580, 64589 and 64647 (Sept. 20, 2016). This is because 
the 6 minute threshold is a minimum, and manufacturers believed that 
some pool filter pumps that are currently considered self-priming pool 
filter pumps in the industry have true priming times greater than 6 
minutes. Thus, the DPPP Working Group believed that 10.0 minutes was 
more appropriate and comprehensive. 81 FR 64580, 64589 (Sept. 20, 
2016). DOE proposed a vertical lift and true priming time of 5.0 feet 
and 10.0 minutes in order to clearly specify the appropriate and 
required level of precision in the definitions and test method. Id.
    DOE notes that these definitions rely on the NSF/ANSI 50-2015 test 
method to determine self-priming capability. DOE's test procedure for 
determining self-priming capability, including the incorporation by 
reference of the NSF/ANSI 50-2015 test method, is discussed further in 
section III.G.2.
    The definitions proposed for self-priming and non-self-priming pool 
filter pumps in the September 2016 DPPP test procedure NOPR also 
explicitly exclude waterfall pumps. As discussed in section III.B.4.a, 
waterfall pumps are pool filter pumps and could meet a definition of 
either self-priming or non-self-priming, unless explicitly excluded 
from those definitions. Because DOE intended for these pumps to be 
treated specifically as waterfall pumps, the proposed definitions for 
self-priming and non-self-priming pool filter pumps both specifically 
excluded waterfall pumps.
    DOE notes that, in the January 2016 general pumps test procedure 
final rule, DOE already defined the term ``self-priming pump'' as a 
pump that (1) is designed to lift liquid that originates below the 
centerline of the pump inlet; (2) contains at least one internal 
recirculation passage; and (3) requires a manual filling of the pump 
casing prior to initial start-up, but is able to re-prime after the 
initial start-up without the use of external vacuum sources, manual 
filling, or a foot valve. 81 FR 4086, 4147 (Jan. 25, 2016). However, in 
the September 2016 DPPP test procedure NOPR, DOE discussed how this 
definition is not applicable to dedicated-purpose pool pumps because 
pool filter pumps typically do not contain a recirculation passage to 
accomplish the self-priming function. Therefore, DOE proposed to revise 
the definition of self-priming pump to ensure the definition of self-
priming is comprehensive and consistent with the new definitions for 
self-priming and non-self-priming pool filter pump. Specifically, DOE 
proposed in the September 2016 DPPP test procedure NOPR to modify the 
existing definition of self-priming pump to also include self-priming 
pool filter pumps, in addition to the other referenced criteria. 81 FR 
64580, 64648 (Sept. 20, 2016).
    In response to DOE's proposal, CEC commented in support of DOE's 
proposal to differentiate self-priming from non-self-priming pool pumps

[[Page 36867]]

using the NSF/ANSI 50-2015. (CEC, No. 7 at p.2)
    During the September 2016 public meeting, Hayward requested 
clarification of the reference to NSF/ANSI 50-2015 asking if changes 
are made to that standard, would manufacturers be bound to those 
changes. (Hayward, Public Meeting Transcript, No. 3 at p. 20) As stated 
during the September 2016 public meeting, DOE incorporates by reference 
a specific edition of a specific standard. If that standard is updated, 
DOE would need to update the reference within their test procedure. 
Until such an update is made, manufacturers are held to the standard 
adopted in the DOE test procedure.
    Hayward also submitted a written comment in response to DOE's 
proposed definition of self-priming and non-self-priming pool filter 
pumps. Hayward recommended that DOE remove the requirement to test 
whether a non-self-priming pump is capable of self-priming. Hayward 
stated that requiring pumps not marketed or sold as self-priming pumps 
to be tested for self-priming capability would be unnecessarily 
burdensome. Hayward recommended that the definition of non-self-priming 
pumps be revised to designate pumps that are ``not marketed or sold as 
self-priming,'' rather than pumps that are not capable of self-priming. 
(Hayward, No. 6 at p.1)
    In response to Hayward's inquiry, DOE clarifies that manufacturers 
may certify their pump models to DOE as non-self-priming without 
testing, so long as manufacturers are certain that the non-self-priming 
pump model has vertical lift (of lack thereof) and true priming time 
characteristics consistent with DOE's definition of non-self-priming 
pool filter pump. That is, the non-self-priming pump would meet the 
definition of non-self-priming, if it were to be tested in accordance 
with DOE's test method for verifying self-priming capability (see 
section III.G.2). Consequently, manufacturers are not required to 
actually test each non-self-priming pump model to prove that such a 
pump is non-self-priming. However, DOE will use the definition of non-
self-priming pool filter pump and the additional test method described 
in section III.G.2 to ensure that manufacturers are properly 
categorizing their pool filter pumps as either self-priming or non-
self-priming in accordance with the adopted definitions. Consequently, 
DOE believes that the definition of non-self-priming pool filter pumps 
does not introduce any additional testing burden, as DOE believes that 
manufacturers already know whether their pumps currently marketed as 
``non-self-priming'' would meet the definition established in this 
final rule. With no additional burden, DOE believes that amending the 
definition of non-self-priming pool filter pumps is not warranted. In 
addition, DOE notes that establishing a clear, quantitative threshold 
to differentiate self-priming and non-self-priming pool filter pumps is 
important to confirm that the pumps are appropriately differentiated 
based on the utility (i.e., self-priming capability) they are able to 
provide.
    Hayward also requested clarification regarding the definition of 
self-priming pool filter pumps. APSP and Hayward asked if 10 minutes is 
the maximum time allowed to reach prime and meet the self-priming 
requirement. (APSP, No. 8 at p. 3; Hayward, No. 6 at p.1)
    The proposed definition for a self-priming pool filter pump allows 
manufacturers to meet the definition of self-priming pool filter pump 
in one of two ways. Manufacturers may show that a pool filter pump is 
self-priming by certifying the pool filter pump as self-priming in 
accordance with NSF/ANSI 50-2015. Alternatively, manufacturers may show 
that a pool filter pump is a self-priming pool filter pump by 
demonstrating that a pump is capable of re-priming to a vertical lift 
of at least 5.0 feet with a true priming time of less than or equal to 
10.0 minutes, without certifying the pump to NSF/ANSI 50-2015. 81 FR 
64580, 64589. The NSF/ANSI 50-2015 standard does not specify a maximum 
true priming time. Section C.3.5 of NSF/ANSI 50-2015 states that, ``if 
a pump is to be designated as self-priming, the true priming time for 
each run shall not exceed 6 min or the manufacturer's recommended time, 
whichever is greater.'' To certify a pump's self-priming capability 
under NSF/ANSI 50-2015, a manufacturer could recommend a true priming 
time greater than 10.0 minutes. Under the proposed definition of self-
priming pool filter pump, if a pool filter pump has true priming time 
greater than 10.0 minutes but is certified as self-priming under NSF/
ANSI 50-2015, that pump would qualify as a self-priming pool filter 
pump. However, if the pump is not certified under NSF/ANSI 50-2015, the 
pump must be capable of re-priming to a vertical lift of 5.0 feet with 
a true priming time of less than or equal to 10.0 minutes in order to 
be classified as a self-priming pump.
    In written comments, Pentair pointed out that NSF requires pumps to 
prime to 10 feet in order to be classified as ``self-priming'' without 
listing a qualifying height, but allows a product to be certified as 
self-priming in the 5 to 10 foot range if accompanied by a qualifying 
height and time to prime. Pentair added that DOE's proposal does not 
require the listing of the qualifying height and suggested that the 
definition of self-priming pump should reflect the non-qualified 
definition of 10 feet. (Pentair, No. 11 at p. 1)
    Pentair also disagreed with DOE's attempt to separate dedicated-
purpose pool pumps intended for aboveground and inground applications 
by using non-self-priming and self-priming characteristics, 
respectively. Specifically, Pentair argued that there are many self-
priming aboveground pumps currently in the market that would become 
non-viable under DOE's proposed definitions. Pentair further notes that 
while modifications could be made to these existing aboveground pumps 
to prevent them from priming, such changes would negatively impact pump 
efficiency and reduce energy savings for this category of non-self-
priming pumps. (Pentair, No. 11 at p. 2)
    In response to Pentair's comments regarding DOE's specified 
vertical lift of 5.0 feet, DOE recommended the vertical lift of 5.0 
feet based on the discussions and recommendation of the DPPP Working 
Group. (Docket No. EERE-2015-BT-STD-0008, Hayward, No. 79 at pp. 160; 
Zodiac, No. 79 at pp. 161-162) DOE notes that, as mentioned previously, 
this ensures that all pool filter pumps that can achieve a vertical 
lift of 5.0 feet (within the required true priming time), whether they 
are certified with NSF/ANSI or not, would be considered a self-priming 
pool filter pump under DOE's regulations. DOE reviewed NSF/ANSI 50-2015 
and notes that, contrary to Pentair's comment, section 6.9.1 of NSF/
ANSI 50-2015 requires that the maximum vertical lift be specified if 
the pump is designated as self-priming, as determined in accordance 
with section C.3 of NSF/ANSI 50-2015. NSF/ANSI 50-2015 does not appear 
to provide the discretion indicated by Pentair if the vertical lift is 
10 feet. In this final rule, DOE is adopting a definition specifying a 
vertical lift of 5.0 feet, as proposed in the September 2016 DPPP test 
procedure NOPR, to maintain consistency with NSF/ANSI 50-2015.
    In response to Pentair's comments regarding the differentiation of 
self-priming and non-self-priming pool filter pumps, DOE proposed to 
differentiate these two styles of pool filter pumps based on the 
recommendations of the DPPP Working Group. (Docket No. EERE-2015-BT-
STD-0008, No. 51 Recommendation #2A at p. 2) DOE acknowledges that one 
factor associated

[[Page 36868]]

with the differentiation of self-priming and non-self-priming pool 
filter pumps is their ability to service inground pools. That is, the 
capability of a pump to self-prime is a fundamental utility associated 
with the ability of a pump to service an inground pool, as the pump is 
typically installed on the ground next to the pool, above the water 
line of the pool. Therefore, the pump must be self-priming in order to 
reliably circulate water on a continual basis. Conversely, pumps 
serving aboveground pools are typically installed below the water line 
and, therefore, gravity can serve to maintain the prime in the pump. 
Although pumps serving aboveground pools could be self-priming or non-
self-priming, self-priming pumps do not provide the same utility to 
aboveground pools because they require modifications that reduce the 
energy efficiency benefits that self-priming pumps provide. Non-self-
priming pumps do not require those modifications, which benefits the 
consumer and provides a distinct utility to the end user. This utility 
is a feature that allows DOE to separate the two styles of pumps into 
distinct equipment classes. In addition, self-priming pumps are more 
efficient than non-self-priming pumps, and merging the product classes 
could result in the unavailability of the feature that non-self-priming 
pumps provide. For these reasons, consistent with the recommendations 
of the DPPP Working Group, in this final rule DOE adopts definitions of 
non-self-priming and self-priming pool filter pumps based on their 
capability to self-prime.
    DOE received no other comments related to the proposed definitions 
for self-priming and non-self-priming pool filter pumps or the revision 
to the definition of self-priming pump established in the January 2016 
general pumps test procedure final rule. However, in reviewing the 
definitions, DOE notes that the vertical lift and true priming time 
should refer to the DOE test method to verifying self-priming 
capability, which DOE is adopting in this final rule (see section 
III.G.2) as opposed to the test method in NSF/ANSI 50-2015. As 
discussed in section III.G.2, DOE's test method for verifying self-
priming capability incorporates by reference the test method in section 
C.3 of NSF/ANSI 50-2015, but also adds several clarifications and 
additions to improve the repeatability and consistency of the test. DOE 
believes this is consistent with the DPPP Working Group's intent, 
whereby a self-priming pool filter pump would either be certified with 
NSF/ANSI 50-2015 or have the specified vertical lift and true priming 
time. DOE's self-priming capability test method is designed to verify 
the criteria established by the DPPP Working Group. Therefore, in this 
final rule, DOE is adopting definitions for self-priming and non-self-
priming pool filter pumps based on certification with NSF/ANSI 50-2015 
and the criteria recommended by the DPPP Working Group, as tested 
pursuant to the DOE test procedure, with minor modifications regarding 
the level of precision required by the criteria. DOE is also adopting 
the changes proposed to the definition of self-priming pump to align 
with the new definitions for self-priming and non-self-priming pool 
filter pumps.
c. Integral Cartridge-Filter and Integral Sand-Filter Pool Pumps
    Most self-priming and non-self-priming filter pumps are installed 
in permanent inground or aboveground pools. However, a significant 
market also exists for temporary pools; e.g., inflatable or collapsible 
pools that can be deflated or collapsed when not in use. Although 
temporary pools also require dedicated-purpose pool pumps to circulate 
and filter the water, these pools are typically served by a unique 
style of dedicated-purpose pool pump that is exclusively distributed in 
commerce with a temporary pool or as a replacement pump for such a 
pool. Some of these pumps are integrally and permanently mounted to a 
filtration accessory such as an integral cartridge-filter or sand-
filter. These particular pumps can only be operated with the integral 
filtration accessory inline--the filtration accessory cannot be plumbed 
out for the purposes of testing. The DPPP Working Group recommended 
establishing prescriptive requirements for these pumps, which requires 
that timers be distributed in commerce with the pumps. (Docket No. 
EERE-2015-BT-STD-0008, No. 51, Recommendation #2B at pp. 1-2) With a 
prescriptive standard, the performance-related metric (i.e., WEF) and 
test procedure would not be necessary and, therefore, not applicable.
    To clearly differentiate integral cartridge-filter and integral 
sand-filter pool pumps from other varieties of dedicated-purpose pool 
pumps, the DPPP Working Group recommended definitions for integral 
cartridge-filter pool pump and integral sand-filter pool pump. The 
recommended definitions create differentiation based on the physical 
construction of the pump. (Docket No. EERE-2015-BT-STD-0008, No. 51 
Recommendation #4 at pp. 2-3) In the September 2016 DPPP test procedure 
NOPR, DOE proposed to adopt the definitions for integral cartridge-
filter pool pump and integral sand-filter pool pump recommended by the 
DPPP Working Group, with a few minor changes to use consistent 
terminology in both definitions. Specifically, DOE proposed the 
following definitions for integral cartridge-filter pool pump and 
integral sand-filter pool pump:
    Integral cartridge-filter pool pump means a pump that requires a 
removable cartridge filter, installed on the suction side of the pump, 
for operation; and the cartridge filter cannot be bypassed.
    Integral sand-filter pool pump means a pump distributed in commerce 
with a sand filter that cannot be bypassed. 81 FR 64580, 64590 (Sept. 
20, 2016).
    APSP stated that the proposed definitions for integral cartridge-
filter pool pump and integral sand-filter pool pump are acceptable and 
consistent with DPPP Working Group meetings. (APSP, No. 8 at p. 3) DOE 
appreciates APSP's comment. DOE received no other comments related to 
the proposed definitions for integral cartridge-filter pool pump and 
integral sand-filter pool pump. Therefore, DOE is adopting the 
definitions as proposed in the September 2016 DPPP test procedure NOPR.
4. Other Varieties of Dedicated-Purpose Pool Pumps
    In addition to pool filter pumps, DOE identified varieties of 
dedicated-purpose pool pumps that are used to drive auxiliary pool 
equipment such as pool cleaners and water features. These pumps, which 
include waterfall pumps and pressure cleaner booster pumps, are 
discussed in greater detail in the following sections.
a. Waterfall Pumps
    Within the pool pump industry, a certain variety of pump exists, 
which is specifically intended to pump water for water features, such 
as waterfalls. These pumps are similar in construction to pool filter 
pumps, except that they only have limited head and speed operating 
ranges. DOE refers to these pumps as waterfall pumps. Waterfall pumps 
meet the definition of pool filter pump discussed in section III.B.3.a, 
but are always equipped with a lower speed motor (approximately 1,800 
rpm) in order to provide the specific high flow, low head 
characteristics required for typical water feature applications. Based 
on this unique construction and end user utility, the DPPP Working 
Group recommended to differentiate waterfall pumps from self-priming 
and non-self-priming pool filter pumps. (Docket No. EERE-2015-BT-STD-
0008, No. 51

[[Page 36869]]

Recommendation #4 at pp. 2-4) In accordance with the intent of the 
December 2015 DPPP Working Group's recommendation, DOE proposed in the 
September 2016 DPPP test procedure NOPR to define waterfall pump as ``a 
pool filter pump with maximum head less than or equal to 30 feet, and a 
maximum speed less than or equal to 1,800 rpm.'' 81 FR 64580, 64590 
(Sept. 20, 2016). This definition uses maximum head and a specific 
maximum speed to distinguish waterfall pumps from other varieties of 
pool filter pumps.
    During the September 2016 DPPP test procedure NOPR public meeting, 
Pentair pointed out that there was a minor typo on page 81 FR 64590 
regarding the description of waterfall pumps. Pentair noted that the 
text read ``the DPPP Working Group agreed that all currently available 
waterfall pumps utilize 4-pole motors, as their low flow requirements 
do not necessitate the use of a higher speed 2-pole motor'' where it 
should actually refer to their low head requirements, not low flow 
requirements. (Pentair, Public Meeting Transcript, No. 3 at p. 74) APSP 
and Pentair reiterated this point in their written comments, pointing 
out that it is the low head requirements that make use of a higher 
speed 2-pole motor unnecessary. (APSP, No. 8 at p. 2; Pentair, No. 11 
at p. 5) DOE agrees with APSP and Pentair that the statement should 
refer to the low head requirements of waterfall pumps and that the 
preamble text in the NOPR was in error.
    DOE received no other comments related to the proposed definition 
of waterfall pump. Therefore, DOE is adopting the definition of 
waterfall pump as proposed in the September 2016 DPPP test procedure 
NOPR, with the clarification that the maximum head value is the value 
certified to DOE.
b. Pressure Cleaner Booster Pumps
    Pressure cleaner booster pumps provide water pressure that is used 
to propel pressure-side pool cleaners along the bottom of the pool and 
remove debris as the cleaner moves. To perform this task, a pressure 
cleaner booster pump must provide high head (i.e., pressure) at a low 
flow.
    The DPPP Working Group recommended that pressure cleaner booster 
pumps be included as a variety of dedicated-purpose pool pump, subject 
to the test procedure, and specifically considered in the analysis to 
support potential energy conservation standards. (Docket No. EERE-2015-
BT-STD-0008, No. 51, Recommendation #1 at p. 1, #2A at p. 2, and #6 at 
p. 5) However, the DPPP Working Group did not recommend a definition of 
pressure cleaner booster pump due to the difficulty of effectively 
differentiating pressure cleaner booster pumps from other DPPP 
varieties. (Docket No. EERE-2015-BT-STD-0008, No. 51 Recommendation #4 
at p. 3) Instead, the DPPP Working Group recommended that DOE develop 
an appropriate definition.
    After considering the design, construction, and performance of 
pressure cleaner booster pumps, DOE determined that the most effective 
differentiator for pressure cleaner booster pumps is the fact that they 
are designed and marketed for a specific pressure-side cleaning 
application. Therefore, to effectively differentiate pressure cleaner 
booster pumps from other pump varieties, DOE proposed in the September 
2016 DPPP test procedure NOPR to define ``pressure cleaner booster 
pump'' as an end suction, dry rotor pump designed and marketed for 
pressure-side pool cleaner applications, and which may be UL listed 
under ANSI/UL 1081-2014, ``Standard for Swimming Pool Pumps, Filters, 
and Chlorinators.'' 81 FR 64580, 65491-92 (Sept. 20, 2016).
    In response to definition of pressure cleaner booster pump proposed 
in the September 2016 DPPP test procedure NOPR, the CA IOUs suggested 
that DOE should include the UL listing as a requirement rather than an 
illustrative characteristic. CA IOUs justified this suggestion, by 
reasoning that in order to be used on pools, most local inspection 
authorities would want to see the UL label. (CA IOUs, Public Meeting 
Transcript, No. 3 at pp. 18-19) Conversely, in written comments, 
Hayward, APSP, and Zodiac asserted that the phrase ``be UL listed'' 
should not be included in the definition of pressure cleaner booster 
pump as it would require a manufacturer to work solely with UL and that 
DOE should not seek to require manufacturers to list pressure cleaner 
booster pumps in accordance with a 3rd party, voluntary standard. 
(Hayward, No. 6, at p. 2; APSP, No. 8 at p. 3; Zodiac, No. 13 at pp. 1-
2) Hayward, APSP, and Zodiac further questioned the benefit of adding a 
statement referencing the UL standard since, while UL 1081 is the de 
facto standard and is applicable to all DPPP, it is not a requirement 
in the United States to certify products to the standard and it does 
not necessarily distinguish a pressure cleaner booster pump from a non-
pressure cleaner booster pump. (Id.)
    As noted during the September 2016 DPPP test procedure NOPR public 
meeting, DOE does not wish to narrow or restrict the definition of 
pressure cleaner booster pump to only those pumps UL listed under ANSI/
UL 1081, because DOE is not fully confident that all pressure cleaner 
booster pumps require such a listing in order to be installed in all 
pools in the United States. This understanding is consistent with 
Hayward, APSP, and Zodiac's written comments suggesting removing the 
reference to ANSI/UL 1081 certification. Therefore, because it is 
possible that some jurisdictions may not require such a listing, DOE 
does not wish to limit the definition of pressure cleaner booster pump 
to pumps with a UL listing if the pump is in fact designed and marketed 
for pressure-side pool cleaner applications. However, DOE agrees with 
CA IOUs that the majority of jurisdictions require UL listing for 
installation of dedicated-purpose pool pumps, including pressure 
cleaner booster pumps, in pools. This is why DOE believes that such 
listing is a useful characteristic to use for distinguishing pressure 
cleaner booster pumps from other end suction pumps not intended for 
pools. While helpful, this reference does not require pressure cleaner 
booster pumps to be certified with UL or any other 3rd party entity. 
The controlling criteria for determining whether a pump meets DOE's 
definition of pressure cleaner booster pump is whether that pump is 
designed and marketed for pressure-side cleaner applications. As such, 
DOE believes that referencing ANSI/UL 1081 certification continues to 
be a useful, illustrative indicator for identifying pressure cleaner 
booster pumps, although it is not mandatory and pressure cleaner 
booster pumps may still meet the definition regardless of whether they 
are certified under ANSI/UL 1081 or not. That is, DOE believes the 
intended application of the pump, as indicated by the pump's own 
marketing literature, is the best indication of whether or not that 
pump is a pressure cleaner booster pump, regardless of whether the pump 
is UL listed under ANSI/UL 1081.
    APSP, Hayward, and Zodiac also pointed out in their written 
comments that the current edition of ANSI/UL 1081 is the 2016 version 
of the standard, not the 2014 version proposed to be incorporated by 
reference in the September 2016 DPPP test procedure NOPR. (APSP, No. 8 
at p.3; Hayward, No. 6 at pp. 1-2; Zodiac, No. 13 at pp. 1-2) DOE has 
reviewed ANSI/UL 1081-2016 and finds it to be similar in content and 
intent to the 2014 edition of the standard. Therefore, in order to 
reference the most recent and relevant version, DOE is incorporating by

[[Page 36870]]

reference ANSI/UL 1081-2016 in this final rule.
    No other comments were received related to the proposed definition 
of pressure cleaner booster pump. Therefore, for the reasons discussed 
in this section and the September 2016 DPPP test procedure NOPR, DOE is 
adopting the definition of pressure cleaner booster pump as proposed in 
the September 2016 DPPP test procedure NOPR, except the adopted 
definition references ANSI/UL 1081-2016 instead of ANSI/UL 1081-2014.
    To provide clarity and remove ambiguity when applying the 
definition for pressure cleaner booster pump, DOE also proposed a 
definition for ``designed and marketed'' that DOE would use when 
determining the applicability of any DPPP test procedure or energy 
conservation standards to such pumps. Specifically, DOE proposed to 
define ``designed and marketed'' as meaning that the equipment is 
specifically designed to fulfill the indicated application and, when 
distributed in commerce, is designated and marketed for that 
application, with the designation on the packaging and all publicly 
available documents (e.g., product literature, catalogs, and packaging 
labels). 81 FR 64580, 64647 (Sept. 20, 2016).
    In response to this proposal, CA IOUs expressed concern that the 
inclusion of ``designed and marketed'' in the definition of pressure 
cleaner booster pump could create a loophole where products could be 
used as pressure cleaner booster pumps even if not specifically 
marketed for that purpose and, in turn, avoid regulation. (CA IOUs, 
Public Meeting Transcript, No. 3 at pp. 23-24) ASAP also commented that 
the proposed definition for designed and marketed seemed to be narrow, 
pointing to a scenario where a pump is designed as a booster pump for 
pool applications but is also marketed by the manufacturer for another 
application. ASAP requested clarification if in this scenario the pump 
in question would be required to meet the standard. (ASAP, Public 
Meeting Transcript, No. 3 at pp. 22-23) In written comments, ASAP and 
NRDC also encouraged DOE to attempt to ensure that the definition for 
``designed and marketed'' does not contain any loopholes. Specifically, 
ASAP and NRDC supported the definition of designed and marketed 
presented in the regulatory text portion of the September 2016 DPPP 
test procedure NOPR over the one presented in the preamble.\16\ 
Additionally, ASAP and NRDC encouraged DOE to consider whether removing 
the word ``specifically'' may further reduce the possibility for 
potential loopholes and suggested removing the word ``all'' from ``all 
publicly available documents'' to ensure pumps are considered pressure 
cleaner booster pumps in cases where the designation is on some 
publicly available documents, but not others. (ASAP and NRDC, No. 12 at 
pp. 1-2) Similarly, CA IOUs recommended that DOE remove the word 
``specifically,'' in order to address pumps designed for both pressure 
cleaner and domestic water booster pump applications, and change 
``all'' to ``any'' publicly available documents. (CA IOUs, No. 9 at pp. 
2-3)
---------------------------------------------------------------------------

    \16\ The definition of designed and marketed contained in the 
preamble (81 FR 64580, 6464592; Sept. 20, 2016) did not exactly 
match the definition of designed and marketed proposed in the 
regulatory text (Id. at 64647). Specifically, the preamble 
definition contained the words ``exclusively'' and ``solely.''
---------------------------------------------------------------------------

    In response to CA IOUs' concern about pumps used as pressure 
cleaner booster pumps but not marketed as such, DOE acknowledges that 
some individuals may attempt to use inappropriate pumps to run 
pressure-side cleaner applications. However, it is DOE's understanding 
that pressure-side pool cleaners are designed to be paired with pumps 
with specific characteristics (e.g., high head and low flow) and that 
manufacturers all design and market specific pumps intended for this 
application. DOE also notes that pumps without these specific 
characteristics would not provide adequate utility in the pressure-side 
pool application and manufacturers would recommend against the use of 
such pumps with their pressure-side cleaners. Therefore, while DOE 
acknowledges the concern of CA IOUs, DOE cannot control the actions of 
installers who may select inappropriate pumps for pressure-side cleaner 
applications, and DOE believes that all pumps appropriate for pressure-
side pool cleaner applications are currently specifically designed and 
marketed as such. DOE will continue to monitor the market to ensure 
that this continues to be the case and that all pumps appropriate for 
pressure-side pool cleaner applications continue to be characterized as 
pressure cleaner booster pumps in the future.
    In response to the concerns of ASAP, NRDC, and CA IOUs regarding 
the applicability of the designed and marketed definition to pumps that 
may be marketed for a variety of applications, in addition to pressure-
side pool cleaner applications, DOE agrees with the commenters. 
Specifically, all pumps designed and marketed for pressure-cleaner 
booster applications should be treated as pressure cleaner booster 
pumps, regardless of any other applications for which they may be 
designed and marketed. DOE acknowledges that the definition of designed 
and marketed that was presented in the preamble of the September 2016 
DPPP test procedure NOPR (81 FR 64580, 64592) was slightly different 
than that contained in the proposed regulatory text (Id. at 64647) and 
may have created confusion regarding the applicability of the designed 
and marketed definition. Specifically, in the preamble, DOE discussed 
defining the term designed and marketed as meaning that the equipment 
is exclusively designed to fulfill the indicated application and, when 
distributed in commerce, is designated and marketed solely for that 
application, with the designation on the packaging and all publicly 
available documents (e.g., product literature, catalogs, and packaging 
labels). Id. DOE notes that the definition presented in the preamble 
was incorrect and the definition presented in the regulatory text on 
page 64647 of the NOPR was the intended definition. DOE believes that 
the definition contained in the regulatory text, which does not refer 
to the exclusivity of the design or that the equipment would be solely 
marketed for a specific purpose, is broader and inclusive of pumps that 
would be designed and marketed for pressure-side cleaner applications 
in addition to other applications. However, DOE agrees with ASAP, NRDC, 
and CA IOUs, that removal of the term ``specifically'' would help 
clarify this aspect of the definition. In addition, DOE agrees that 
changing from ``all publicly available documents'' to ``any publicly 
available documents'' best fulfills the intent of the definition, as 
any marketing of a pump as a pressure cleaner booster pump would show 
that the pump is intended to be treated as a pressure cleaner booster 
pump.
    Therefore, DOE is defining the term ``designed and marketed'' as 
set forth in the regulatory text of this rule.
5. Storable and Rigid Electric Spa Pumps
    In addition to swimming pools, dedicated-purpose pool pumps are 
also used in spas to circulate and filter the water and operate water 
jets. Similar to swimming pools, spas can range in size and 
construction style. Specifically, spas can be portable or permanent 
installations and can be constructed out of a variety of materials 
depending on the installation.

[[Page 36871]]

    Permanent, inground spas are typically constructed similar to small 
inground pools and use the same pumps (i.e., self-priming pool filter 
pumps described in section III.B.3.a) to operate the spa. Conversely, 
for portable spas, a specific-purpose pump is typically distributed in 
commerce with the portable spa that is specifically designed and 
marketed for portable electric spa applications only. Such portable 
electric spa applications can be further differentiated into two 
general categories: Storable electric spas and rigid electric spas. A 
storable electric spa refers to an inflatable or otherwise temporary 
spa that can be collapsed or compacted into a storable unit. In 
contrast, a rigid electric spa is constructed with rigid, typically 
more durable, materials and cannot be collapsed or compacted for 
storage.
    In the September 2016 DPPP test procedure NOPR, consistent with the 
recommendations of the DPPP Working Group (Docket No. EERE-2015-BT-STD-
0008, No. 51 Recommendation #4 at p. 3), DOE proposed definitions for 
``storable electric spa pump'' and ``rigid electric spa pump'' to 
effectively differentiate them from other varieties of pumps. 
Specifically, DOE proposed to define ``storable electric spa pump'' as 
a pump that is distributed in commerce with one or more of the 
following: (1) An integral heater and (2) an integral air pump. DOE 
also proposed to define ``rigid electric spa pump'' as an end suction 
pump that does not contain an integrated basket strainer or require a 
basket strainer for operation as stated in the manufacturer literature 
provided with the pump, and meets the following three criteria: (1) Is 
assembled with four through bolts that hold the motor rear endplate, 
rear bearing, rotor, front bearing, front endplate, and the bare pump 
together as an integral unit; (2) is constructed with buttress threads 
at the inlet and discharge of the bare pump; and (3) uses a casing or 
volute and connections constructed of a non-metallic material. 81 FR 
64580, 64592-93 (Sept. 20, 2016).
    DOE received no comments negative or positive related to the 
proposed definitions for storable electric spa pump and rigid electric 
spa pump. Therefore, DOE is adopting the definitions for these terms as 
proposed in the September 2016 DPPP test procedure NOPR.
    In addition, DOE notes that the definitions for storable electric 
spa pump, as well as the definitions for integral cartridge-filter pool 
pump and integral sand-filter pool pump (see section III.B.3.c), all 
utilize the term ``integral'' as part of the definition. In support of 
these definitions, the DPPP Working Group recommended a definition for 
integral. (Docket No. EERE-2015-BT-STD-0008, No. 51 Recommendation #4 
at p. 7) In the September 2016 DPPP test procedure NOPR, DOE proposed 
the definition recommended by the DPPP Working Group and proposed 
defining the term ``integral'' as a part of the device that cannot be 
removed without compromising the device's function or destroying the 
physical integrity of the unit. 81 FR 64580, 64592-93 (Sept. 20, 2016).
    DOE received no comments related to the proposed definition of the 
term ``integral.'' Therefore, DOE is adopting the definition for 
integral as proposed in the September 2016 DPPP test procedure NOPR.
6. Applicability of Test Procedure Based on Pump Configuration
    In addition to specific definitions, the DPPP Working Group also 
discussed and provided recommendations pertinent to the scope of 
applicability of the DPPP test procedure. Ultimately, the DPPP Working 
Group recommended that the scope of the test procedure be limited to 
only the following specific varieties of dedicated-purpose pool pumps:
     Self-priming pool filter pumps,
     non-self-priming pool filter pumps,
     waterfall pumps, and
     pressure cleaner booster pumps.
    (Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendations #1, #2A, 
and #2B at pp. 1-2; Recommendation #6 at p. 5)
    In addition, although not included in the December 2015 DPPP 
Working Group recommendations, the DPPP Working Group discussed and 
ultimately recommended not considering a test procedure or standards 
for self-priming and non-self-priming pool filter pumps with a rated 
hydraulic horsepower \17\ greater than 2.5 hp. (Docket No. EERE-2015-
BT-STD-0008, No. 79 at pp. 33-54)
---------------------------------------------------------------------------

    \17\ See section III.G.1 for a discussion of determination of 
rated hydraulic horsepower.
---------------------------------------------------------------------------

    The DPPP Working Group also recommended that the test procedure and 
reporting requirements be applicable to all self-priming pool filter 
pumps--both those served by single-phase power and those served by 
three-phase power.\18\ (Docket No. EERE-2015-BT-STD-0008, No. 82 
Recommendations #3 at p. 2) Consistent with the DPPP Working Group 
recommendations, DOE proposed in the September 2016 DPPP test procedure 
NOPR that the test procedure, sampling requirements, labeling, and 
related provisions for dedicated-purpose pool pumps apply to all self-
priming pool filter pumps and non-self-priming pool filter pumps less 
than 2.5 rated hydraulic horsepower, as well as waterfall pumps and 
pressure cleaner booster pumps, regardless of the phase of the supplied 
power with which they are intended to be used. 81 FR 64580, 64593 
(Sept. 20, 2016).
---------------------------------------------------------------------------

    \18\ The Working Group recommended that the scope of standards 
for self-priming pool filter pumps only apply to self-priming pool 
filter pumps served by single-phase power, while the recommended 
test procedure and reporting requirements would still be applicable 
to all self-priming pool filter pumps--both those served by single-
phase power and those served by three-phase power.
---------------------------------------------------------------------------

    Consistent with the December 2015 DPPP Working Group 
recommendations, in the September 2016 DPPP test procedure NOPR, DOE 
also proposed definitions for rigid-electric and storable-electric spa 
pumps as a variety of dedicated-purpose pool pump in this test 
procedure final rule, but DOE did not propose test procedures or 
reporting requirements for them.
    In the September 2016 DPPP test procedure NOPR, DOE also 
specifically proposed to exclude submersible pumps from the scope of 
the DPPP test procedure and proposed defining a ``submersible pump'' as 
a pump that is designed to be operated with the motor and bare pump 
fully submerged in the pumped liquid. 81 FR 64580, 64594 (Sept. 20, 
2016).
    In written comments, CEC expressed support of DOE's proposal to set 
the scope of the test procedure rulemaking to include self-priming and 
non-self-priming pool filter pumps, waterfall pool pumps, and pressure 
cleaner booster pumps. (CEC, No. 7 at p. 2) DOE appreciates CEC's 
support.
    In response to DOE's proposal regarding the applicability of the 
proposed test procedure to dedicated-purpose pool pumps served by both 
single- and three-phase power, Hayward and APSP requested clarification 
as to the scope of the rule and specifically if it included three-phase 
dedicated-purpose pool pumps. (Hayward, No. 6 at p. 4; APSP, No. 8 at 
p. 5) Nidec supported the DPPP Working Group's recommendation that any 
potential energy conservation standards would only apply to dedicated-
purpose pool pumps served by single-phase power. However, Nidec 
recommended that the test procedure and reporting requirements only 
apply to dedicated-purpose pool pumps served by single-phase power. 
Nidec stated that three-

[[Page 36872]]

phase motors used with dedicated-purpose pool pumps are very energy 
efficient and are already regulated. Nidec suggested that three-phase 
dedicated-purpose pool pumps and related motors should not need further 
testing nor reporting requirements. (Nidec, No. 10 at p. 3)
    In response to Hayward and APSP's request for clarification, DOE 
clarifies that, as noted previously and discussed in the September 2016 
DPPP test procedure NOPR, DOE's proposed test procedure would apply to 
self-priming pool filter pumps and non-self-priming pool filter pumps 
less than 2.5 rated hydraulic horsepower, as well as waterfall pumps 
and pressure cleaner booster pumps, served by both single-phase power 
or three-phase power. In response to Nidec's comments regarding the 
applicability of the proposed DOE test procedure to three-phase 
equipment, DOE believes that the applicability of the DPPP test 
procedure proposed in the September 2016 DPPP test procedure NOPR is 
consistent with the intent of the DPPP Working Group exhibited in the 
June 2016 DPPP Working Group recommendations, where the Working Group 
recommended that the test procedure and reporting requirements would be 
applicable to all self-priming pool filter pumps served by single- and 
three-phase power. (Docket No. EERE-2015-BT-STD-0008, No. 82, 
Recommendation #3 at p. 2) Although the June 2016 DPPP Working Group 
recommendations reference only self-priming pool filter pumps, there is 
no reason why DOE's proposed DPPP test procedure would not be 
applicable to other varieties of dedicated-purpose pool pumps served by 
single- or three-phase power. In addition, the DPPP Working Group did 
not recommend restricting the scope of standards for any of the other 
DPPP varieties based on the phase of power with which it is intended to 
be used. However, DOE agrees with Nidec that three-phase motors may 
already be regulated under existing DOE test procedures and energy 
conservation standards for electric motors and small electric motors. 
As discussed further in section III.G.1.b, in this final rule, DOE is 
limiting the test methods for motor horsepower metrics (i.e., DPPP 
nominal motor horsepower, DPPP service factor, and DPPP motor total 
horsepower) to single-phase motors because testing and rating of three-
phase motors is already regulated by DOE.
    DOE agrees that, as stated by Nidec, the applicability of the DPPP 
test procedure and standards recommended by the DPPP Working Group 
differ slightly with respect to dedicated-purpose pool pumps that are 
supplied by single-phase versus three-phase power. Specifically, the 
DPPP Working Group recommended that the scope of standards for self-
priming pool filter pumps only apply to self-priming pool filter pumps 
served by single-phase power, while the recommended test procedure and 
reporting requirements would still be applicable to all self-priming 
pool filter pumps--both those served by single-phase power and those 
served by three-phase power. (Docket No. EERE-2015-BT-STD-0008, No. 82 
Recommendations #3 at p. 2)
    In response to the scope of test procedure and metric applicability 
proposed by DOE in the September 2016 DPPP test procedure NOPR, Pentair 
and APSP commented that some form of differentiation or exclusion 
should be established for dedicated-purpose pool pumps with nominal 
motor horsepower greater than 3 hp. Pentair suggested that the metric, 
as proposed in the NOPR, potentially limits a manufacturer's ability to 
develop an optimal solution for these lower head hydraulic systems, 
because these pumps are typically applied to pools with larger plumbing 
and do not typically operate on curve C. Pentair claimed that as a 
result, these larger pumps will be eliminated from the market. 
(Pentair, No. 11, at p. 2; APSP, No 8 at pp. 3-4)
    As discussed previously in this section, the DPPP Working Group, of 
which Pentair was a member, recommended that the scope of the test 
procedure be limited to self- and non-self-priming pool filter pumps, 
waterfall pumps, and pressure cleaner booster pumps. (Docket No. EERE-
2015-BT-STD-0008, No. 51, Recommendations #1, #2A, and #2B at pp. 1-2; 
Recommendation #6 at p. 5) In the December 2015 DPPP Working Group 
recommendations, the DPPP Working Group discussed and ultimately 
recommended not considering a test procedure or standards for self-
priming and non-self-priming pool filter pumps with a rated hydraulic 
horsepower greater than 2.5 hp. (Docket No. EERE-2015-BT-STD-0008, No. 
79 at pp. 33-54) However, the DPPP Working Group did not recommend any 
other test procedure differentiation or exclusions based on nominal 
motor horsepower, nor did the DPPP Working Group ask DOE to pursue such 
action. Therefore, the test procedure and standards recommended by the 
DPPP Working Group were intended to be applicable to self-priming and 
non-self-priming pool filter pumps with rated hydraulic horsepower less 
than or equal to 2.5 hp, which include some pool filter pumps with a 
nominal motor horsepower greater than 3 hp,\19\ which are typically 
installed into applications with larger plumbing, for which the test 
procedure would not be representative. (Docket No. EERE-2015-BT-STD-
0008, No. 94 at pp. 38-53; Docket No. EERE-2015-BT-STD-0008, No. 95 at 
pp. 176-194; Docket No. EERE-2015-BT-STD-0008, No. 79 at pp. 39-40, 47-
48) In response to Pentair and APSP, DOE notes that Pentair and APSP 
did not introduce any new data indicating that the cutoff should 
actually be a nominal motor horsepower of 3 hp; rather they simply 
indicated this was due to larger plumbing systems not on curve C, which 
the Working Group already considered in making its cutoff selection. 
Finally, the introduction of an exclusion for pumps with greater than 3 
nominal motor horsepower opens a significant circumvention loophole 
risk. For example, manufacturers of pumps with 3 nominal motor 
horsepower could decide to slightly increase the capacity of the motor 
(with no change to the bare pump), in order to avoid being subject the 
test procedure and energy conservation standards. Such a change on 
nominal horsepower would have little impact on the utility or 
production cost of such a pump. Alternatively, any change to a pump's 
hydraulic horsepower rating will directly impact end-user utility 
(i.e., flow and head). Consequently, DOE reaffirms its conclusion that 
hydraulic horsepower, rather than motor horsepower, should be used to 
define the upper scope limit, as hydraulic horsepower is more directly 
tied to end-user utility (i.e., flow and head) than motor horsepower. 
For these reasons, DOE is not adopting an alternative scope limitation 
in this final rule.
---------------------------------------------------------------------------

    \19\ Nominal motor horsepower is approximately equivalent to the 
rated hydraulic horsepower divided by the pump efficiency and the 
motor efficiency of the dedicated-purpose pool pump.
---------------------------------------------------------------------------

    DOE did not receive any other comments regarding the definition of 
submersible pump, or the general scope of applicability of the 
September 2016 DPPP test procedure NOPR. Consequently, in this final 
rule, DOE is adopting test methods for all self-priming pool filter 
pumps and non-self-priming pool filter pumps less than 2.5 rated 
hydraulic horsepower, as well as waterfall pumps and pressure cleaner 
booster pumps, including pumps served by both single- and three-phase 
power, with the exclusion of submersible pumps. The specific test 
methods for each of the applicable DPPP varieties are discussed in more 
detail in section III.D.

[[Page 36873]]

7. Definitions Related to Dedicated-Purpose Pool Pump Speed 
Configurations and Controls
    In addition to definitions of dedicated-purpose pool pump and the 
specific DPPP varieties, DOE also proposed in the September 2016 DPPP 
test procedure NOPR to establish definitions to further differentiate 
certain varieties of dedicated-purpose pool pumps, based on the speed 
configuration of the motor and/or the presence of controls on the DPPP 
model as distributed in commerce. These definitions are discussed in 
section III.B.7.a. For dedicated-purpose pool pumps distributed in 
commerce with applicable pool pump controls, DOE also proposed a 
definition for ``freeze protection controls.'' This is discussed in 
section III.B.7.b.
a. DPPP Speed Configurations
    In the June 2016 DPPP Working Group recommendations, the DPPP 
Working Group recommended definitions for the following DPPP speed 
configurations: Single-speed, two-speed, multi-speed, and variable-
speed. (Docket No. EERE-2015-BT-STD-0008, No. 82, Recommendation #5A at 
p. 3) In the September 2016 DPPP test procedure NOPR, DOE proposed 
adopting the DPPP Working Group's recommended definitions with a few 
minor modifications for clarity and consistency. 81 FR 64580, 64594-97 
(Sept. 20, 2016). Specifically, DOE proposed the following definitions 
for single-speed, two-speed, multi-speed, and variable-speed dedicated-
purpose pool pump:
     Single-speed dedicated-purpose pool pump means a 
dedicated-purpose pool pump that is capable of operating at only one 
speed.
     Two-speed dedicated-purpose pool pump means a dedicated-
purpose pool pump that is capable of operating at only two different 
pre-determined operating speeds, where the low operating speed is less 
than or equal to half of the maximum operating speed and greater than 
zero, and must be distributed in commerce either: (1) With a pool pump 
control (i.e., variable speed drive and user interface or switch) that 
is capable of changing the speed in response to user preferences; or 
(2) Without a pool pump control that has the capability to change speed 
in response to user preferences, but without which the pump is unable 
to operate without the presence of such a pool pump control.
     Multi-speed dedicated-purpose pool pump means a dedicated-
purpose pool pump that is capable of operating at more than two 
discrete pre-determined operating speeds separated by speed increments 
greater than 100 rpm, where the lowest speed is less than or equal to 
half of the maximum operating speed and greater than zero, and must be 
distributed in commerce with an on-board pool pump control (i.e., 
variable speed drive and user interface or programmable switch) that 
changes the speed in response to pre-programmed user preferences and 
allows the user to select the duration of each speed and/or the on/off 
times.
     Variable-speed dedicated-purpose pool pump means a 
dedicated-purpose pool pump that is capable of operating at a variety 
of user-determined speeds, where all the speeds are separated by at 
most 100 rpm increments over the operating range and the lowest 
operating speed is less than or equal to one-third of the maximum 
operating speed and greater than zero. Such a pump must include a 
variable speed drive and be distributed in commerce either: (1) With a 
user interface that changes the speed in response to pre-programmed 
user preferences and allows the user to select the duration of each 
speed and/or the on/off times; or (2) without a user interface but be 
unable to operate without the presence of a user interface.
    81 FR 64580, 64647-48 (Sept. 20, 2016).
    DOE's proposed definitions enable each speed configuration to be 
identified based on (1) the number of operating speeds available to the 
pump; (2) the minimum operating speed, or turn-down ratio,\20\ of the 
pump; (3) the pump's ability to connect to a pool pump control; and/or 
(4) the characteristics of that pool pump control. The pool pump 
control varieties, pool pump control operating characteristics, and 
requirements regarding the inclusion of pool pump controls applicable 
to each DPPP speed configuration, as proposed in the September 2016 
DPPP test procedure NOPR, are summarized in Table III.2.
---------------------------------------------------------------------------

    \20\ The turn-down ratio for multi-speed pumps, including two-
speed pumps, describes the ability of the pump to decrease speed 
relative to the maximum operating speed and is calculated as the 
maximum operating speed over the minimum operating speed of the 
pump.

 Table III.2--Summary of Applicable Pool Pump Control Varieties and Related Proposed Requirements for Each DPPP
                                               Speed Configuration
----------------------------------------------------------------------------------------------------------------
                                                                                          Inclusion of pool pump
 DPPP speed configuration definition     Applicable pool pump    Pool pump control must  controls as distributed
                                          control varieties       be pre-programmable          in commerce
----------------------------------------------------------------------------------------------------------------
Two-Speed............................   Variable speed  No.....................  Included.
                                        drive and user
                                        interface or
                                        Switch........
Multi-Speed..........................   Variable speed  Yes....................  Included and on-board.
                                        drive and user
                                        interface or
                                        Switch........
Variable-Speed.......................   Variable speed  Yes....................  Included or DPPP model
                                        drive and user                                    cannot operate without
                                        interface                                         being installed with
                                                                                          such controls.
----------------------------------------------------------------------------------------------------------------

    CEC, in written comments, supported DOE's proposal to establish 
definitions for single-speed, two-speed, multi-speed, and variable 
speed pool filter pumps. (CEC, No. 7 at p. 2) DOE appreciates the 
support of CEC.
    In response to DOE's proposed definitions for two-speed dedicated-
purpose pool pump, Hayward suggested a modification to the definitional 
requirement that two-speed dedicated-purpose pool pumps not be able to 
operate at high speed without the requisite control, instead of not 
able to operate at all. That is, instead of being unable to operate 
entirely, two-speed dedicated-purpose pool pumps could be allowed to 
function at a default low-speed if they are operated without an 
appropriate pool pump control.

[[Page 36874]]

(Hayward, Public Meeting Transcript, No. 3 at pp. 21, 26-27) In 
response to Hayward's suggestion, CA IOUs stated their support for 
DOE's originally proposed provision that does not allow a two-speed 
dedicated-purpose pool pump be considered a two-speed pump unless it is 
unable to operate without an appropriate pool pump control. (CA IOUs, 
Public Meeting Transcript, No. 3 at p. 26-27)
    In response to Hayward's suggestion regarding the definition of 
two-speed dedicated-purpose pool pump, DOE agrees with CA IOUs that the 
proposed modification is not consistent with the recommendations of the 
DPPP Working Group. (Docket No. EERE-2015-BT-STD-0008, No. 82, 
Recommendation #5A at p. 3) The specific wording of the DPPP speed 
configuration definitions were discussed at length and in significant 
detail during the DPPP Working Group negotiations and, if fact, were 
part of the final negotiation of standard levels. (Docket No. EERE-
2015-BT-STD-0008, No. 91 at pp. 141-183; Docket No. EERE-2015-BT-STD-
0008, No. 92 at pp. 215-222) Specifically, certain members of the DPPP 
Working Group voiced concern that if two-speed dedicated-purpose pool 
pumps were distributed in commerce without any form of control and were 
capable of being operated without such a control, there would be a 
significant risk that such pumps would not be paired with an applicable 
pool pump control in the field and would not achieve the performance 
and potential energy savings represented by the WEF metric. (Docket No. 
EERE-2015-BT-STD-0008, No. 91 at pp. 141-183) DOE believes that if a 
two-speed dedicated-purpose pool pump is capable of operating, even at 
low speed, without an applicable pool pump control, this significantly 
increases the risk that two-speed pool filter pumps would be installed 
and operated without an appropriate control. As the two-speed 
dedicated-purpose pool pump test points presume a low flow and high 
flow test point, the two-speed dedicated-purpose pool pump test 
procedure is only appropriate and representative of two-speed 
dedicated-purpose pool pumps with controls that enable operation at 
both speeds. Therefore, to ensure that the test points and resultant 
WEF metric for two-speed dedicated-purpose pool pumps is representative 
of actual performance of the equipment in the field, DOE is adopting 
the definition for two-speed dedicated-purpose pool pump proposed in 
the September 2016 DPPP test procedure NOPR. Furthermore, DOE notes 
that the two-speed dedicated-purpose pool pump definition does not 
restrict DPPP manufacturers from producing a pump that has two 
operating speeds and can only be operated at low speed without an 
appropriate control, as described by Hayward. However, in such a case 
the pump would not meet the definition of two-speed dedicated-purpose 
pool pump and, therefore, would be tested and subject to standards 
based on the single-speed dedicated-purpose pool pump test points. See 
section D.1 for more discussion regarding the specific test points for 
the different DPPP speed configurations.
    In response to DOE's definition of a two-speed dedicated-purpose 
pool pump, Hayward and APSP also requested clarification regarding the 
meaning of the phrase ``unable to operate.'' (Hayward, No. 6 at pp. 2; 
APSP, No. 8 at p. 3) DOE clarifies that the phrase ``unable to 
operate'' means that the pump is non-operational and could not be used 
to circulate water in a pool. That is, the pump is unable to provide 
any flow or head, and consumes no energy.
    Hayward and APSP also requested a better definition of the term 
``pool pump control.'' Hayward and APSP both commented that the two-
speed dedicated-purpose pool pump definition includes a parenthetical 
``(i.e., variable speed drive and user interface or switch)'' that 
implies the only two options for a pool pump control are a switch or a 
variable speed drive and user interface. (Hayward, No. 6 at pp. 2; 
APSP, No. 8 at p. 3)
    DOE recognizes that the use of the abbreviation ``i.e.'' \21\ was 
used in error, and may have caused confusion. DOE's intent was to use 
the abbreviation ``e.g.,'' \22\ which would signify that a variable 
speed drive and a user interface or switch were just two examples of 
possible technologies. That said, the phrase ``pool pump control'' is 
not explicitly defined in this final rule and a pool pump control is 
not limited to the two options used as examples. DOE interprets the 
phrase ``pool pump control'' as a general term that encompasses any 
technology that is capable of changing the speed in response to user 
preferences. To clarify DOE's original intent, DOE has modified the 
definition of two-speed dedicated-purpose pool pump to replace ``i.e.'' 
with ``e.g.''
---------------------------------------------------------------------------

    \21\ Latin for ``id est.'' Meaning ``that is.'' http://www.merriam-webster.com/dictionary/i.e.
    \22\ Latin for ``exempli gratia.'' Meaning ``for example.'' 
http://www.merriam-webster.com/dictionary/e.g.
---------------------------------------------------------------------------

    Similarly, Davey commented that the proposed definition for 
variable-speed dedicated purpose pool pumps may hinder innovation of 
pump products that do not require additional controllers. For example, 
Davey suggested that a dedicated-purpose pool pump, with no pool pump 
control, but which enables the user to set a duration of operation at 
high speed and then default to low speed operation might improve 
efficiency. Davey also noted that, under the proposed definition of 
variable-speed dedicated-purpose pool pump, a user could program the 
pump to run at the highest speed all the time. (Davey, No. 5 at pp. 2-
3)
    DOE notes that Davey's comment describes a configuration where a 
pump is capable of operating at a high speed and a low speed and is 
capable of programming the duration of each speed in response to user 
preferences. Such a configuration would meet the proposed definition of 
a two-speed dedicated-purpose pool pump. As described above, DOE 
proposed that a two-speed dedicated-purpose pool pump be defined as a 
dedicated-purpose pool pump that is capable of operating at only two 
different, pre-determined operating speeds, where the low operating 
speed is less than or equal to half of the maximum operating speed and 
greater than zero, and must be distributed in commerce either: (1) With 
a pool pump control (i.e., variable speed drive and user interface or 
switch) that sets the speed in response to user preferences or (2) 
without a pool pump control that has such capability but is unable to 
operate without the presence of such a pool pump control. 81 FR 64580, 
64594 (Sept. 20, 2016). As noted previously, DOE, in this final rule, 
is altering the definition to refer to the variable speed drive and 
user interface or switch as illustrative examples with the term 
``e.g.'' and any pool pump control capable of operating in the manner 
described in the definition would meet DOE's definition of two-speed 
dedicated-purpose pool pump, regardless of the control's technology.
    The DPPP Working Group discussed the definition of variable-speed 
dedicated-purpose pool filter pumps, and took care to craft a 
definition that is sufficiently broad so as to not restrict innovation. 
Working Group members agreed that the definition should not specify 
whether the pool pump controller is attached to or detached from the 
motor, and the definition should not specify whether the control is 
sold with the pump or sold separately from the pump. (Docket No. EERE-
2015-BT-STD-008, No. 91 at pp. 164-166) Based on recommendations from

[[Page 36875]]

the DPPP Working Group, DOE proposed that a variable-speed drive be 
defined as equipment capable of varying the speed of the motor. 81 FR 
64580, 64596 (Sept. 20, 2016) This definition is very broad, and it 
only limits the available technologies to the extent that is required 
to describe the utility inherent in a variable-speed dedicated purpose 
pool pump. Similarly, the September 2016 DPPP test procedure NOPR 
implicitly defines a user interface as a device that changes the speed 
in response to pre-programmed user preferences and allows the user to 
select the duration of each speed and/or the on/off times. 81 FR 64580, 
64595 (Sept. 20, 2016) This definition is also broad, and is only 
limited to the extent necessary to capture the required functionality 
of variable-speed dedicated-purpose pool pumps. Based on these points, 
DOE believes that the definition of a variable-speed dedicated-purpose 
pool filter pump is sufficiently broad to allow a range of technologies 
and innovative approaches, while ensuring that any such technologies 
would still provide the utility of a variable-speed dedicated-purpose 
pool pump consistent with the intent of the DPPP Working Group.
    DOE understands that equipment covered by standards change as 
manufacturers add new features to their products and update their 
designs. DOE will monitor the DPPP market for changes in equipment and 
technology. In the future, DOE may amend the definitions of any of DPPP 
varieties or speed configurations, or include new varieties of 
dedicated-purpose pool pumps, if necessary. In the meantime, 
manufacturers may apply for a test procedure waiver if they develop a 
pump that meets the intent of the variable-speed DPPP definition but 
does not meet all of the definition's criteria. In general, any 
interested party may submit a petition for a test procedure waiver for 
a basic model of a covered product if the basic model's design prevents 
it from being tested according to the test procedures or cause the 
prescribed test procedures to evaluate the basic model in a manner so 
unrepresentative of its true energy consumption characteristics as to 
provide materially inaccurate comparative data. Additional details on 
the petition for waiver process are available at 10 CFR 431.401 and at 
http://energy.gov/eere/buildings/test-procedure-waivers.
    In addition, in reviewing the proposed definitions, DOE also 
noticed that the proposed definition for two-speed dedicated-purpose 
pool pump was grammatically incorrect. In this final rule, DOE is 
correcting the grammatical error, which does not affect the intent or 
substance of the definition. Specifically, the proposed definition 
contained the final clause ``but without which the pump is unable to 
operate without the presence of such a pool pump control,'' which this 
final rule adopts as modified to read ``but is unable to operate 
without the presence of such a pool pump control'' in this final rule.
    Similarly, in reviewing the variable-speed DPPP definition, DOE 
noticed that the last phrase refers generically to a ``user interface'' 
when it is intended to refer to a user interface with specific 
characteristics and capabilities, as referenced in the previous clause 
in the definition. Therefore, in this final rule, DOE is modifying the 
definition to clarify that the definition is, in all places, referring 
to a user interface that changes the speed in response to pre-
programmed user preferences and allows the user to select the duration 
of each speed and/or the on/off times. This ensures that the two 
clauses in the definition are mutually exclusive. DOE is also updated 
the terminology in the second clause to be grammatically correct, 
consistent with the definition of two-speed dedicated-purpose pool 
pump. That is, DOE adopts a definition with the final clause in the 
definition to read ``without a user interface that changes the speed in 
response to pre-programmed user preferences and allows the user to 
select the duration of each speed and/or the on/off times, but is 
unable to operate without the presence of a user interface.''
    In addition to proposing definitions of the various DPPP speed 
configurations, in the September 2016 DPPP test procedure NOPR, DOE 
proposed to define variable-speed drive to mean equipment capable of 
varying the speed of the motor. 81 FR 64580, 64594-64597 (Sept. 20, 
2016). This definition was intended to clarify and support the proposed 
definitions for two-speed, multi-speed, and variable-speed dedicated-
purpose pool pump.
    DOE received no comments regarding the proposed definition of 
variable-speed drive. Therefore, DOE is adopting the definition for 
variable speed drive as proposed in the September 2016 DPPP test 
procedure NOPR.
b. Freeze Protection Controls
    DPPP Working Group recommended additional prescriptive requirements 
for dedicated-purpose pool pumps distributed in commerce with ``freeze 
protection controls.'' (Docket No. EERE-2015-BT-STD-0008, No. 82, 
Recommendation #6A at p. 4). Freeze protection controls are controls 
that, at a certain ambient temperature, turn on the dedicated-purpose 
pool pump to circulate water for a period of time to prevent the pool 
and water in plumbing from freezing. These prescriptive freeze control 
requirements are discussed in section III.H.
    To identify dedicated-purpose pool pumps with freeze protection 
controls, DOE proposed in the September 2016 DPPP test procedure NOPR 
to define freeze protection controls as pool pump controls that, at a 
certain ambient temperature, turn on the dedicated-purpose pool pump to 
circulate water for a period of time to prevent the pool and water in 
plumbing from freezing. 81 FR 64580, 64597 (Sept. 20, 2016).
    DOE received no comments related to the proposed definition of 
freeze protection controls. Therefore, DOE is adopting the definition 
of freeze protection controls as proposed in the September 2016 DPPP 
test procedure NOPR. DOE did receive comments related to the proposed 
test method for verifying the presence and operation of freeze 
protection controls, which are discussed in section III.K.3.
8. Basic Model
    For purposes of certification, compliance, and enforcement, DOE 
generally applies its energy conservation standards to ``basic models'' 
of consumer products and commercial and industrial equipment. For the 
purposes of applying the DPPP regulations, DOE proposed in the 
September 2016 DPPP test procedure NOPR to define what constitutes a 
``basic model'' of a dedicated-purpose pool pump. 81 FR 64580, 64597 
(Sept. 20, 2016). Applying this basic model concept allows 
manufacturers to group similar models within a basic model to minimize 
testing burden, while ensuring that key variables that differentiate 
DPPP energy performance and/or utility are maintained as separate basic 
models.
    In the September 2016 DPPP test procedure NOPR, DOE proposed 
adopting only the provisions of the current pump basic model definition 
that are applicable to dedicated-purpose pool pumps, which includes all 
units of a given product or equipment type (or class thereof) 
manufactured by one manufacturer, having the same primary energy 
source, and having essentially identical electrical, physical, and 
functional (or hydraulic) characteristics that affect energy 
consumption, energy efficiency, water consumption, or water efficiency. 
81 FR 64580, 64597 (Sept. 20, 2016). Procedurally, to apply the basic 
model concept to dedicated-

[[Page 36876]]

purpose pool pumps, DOE proposed to amend the definition of ``basic 
model'' for pumps that currently exists at 10 CFR 431.462, as 
established in the January 2016 general pumps test procedure final rule 
to also accommodate dedicated-purpose pool pumps. 81 FR 4086 (Jan. 25, 
2016). The current pumps basic model definition contains several 
specific accommodations regarding number of stages for multistage pumps 
and trimmed impellers and is applicable only to those general pumps 
that were the subject of the January 2016 general pumps test procedure 
final rule. Consequently, DOE proposed amending the definition to 
clarify that the multistage pump and trimmed impeller provisions were 
only applicable to pumps subject to the test procedure established in 
the January 2016 general pumps test procedure final rule. 81 FR 64580, 
64597 (Sept. 20, 2016).
    In response to DOE's proposed definition of basic model for 
dedicated-purpose pool pumps, DOE received several comments regarding 
how different individual models could be grouped under the basic model 
provisions. Waterway commented that sometimes a single individual model 
has identical functional characteristics to several other individual 
models, and asked whether such individual models may be grouped within 
the basic model. (Waterway, Public Meeting Transcript, No. 3 at p. 95)
    In response to Waterway's comment, as discussed in the September 
2016 DPPP test procedure NOPR public meeting, models that have 
identical electrical, physical, and functional (or hydraulic) 
characteristics that affect energy consumption, energy efficiency, 
water consumption, or water efficiency, fall within the same basic 
model for the purposes of DOE certification, even if they have 
different unique model numbers in the manufacturer's catalogue. In such 
a case, a manufacturer would just list all the unique individual model 
numbers to which a given basic model certification applied in the 
certification report submitted to DOE. (See section III.K.2 for more 
information on certification reporting requirements.)
    Pentair expressed concern regarding using a basic model in 
certifying products to DOE, stating that, in the ENERGY STAR database, 
when models are grouped under a single certification, utilities often 
do not recognize models that do not appear in the main column listing 
the basic models. Pentair stated that this makes it necessary to list 
each unit separately in the ENERGY STAR database, even if the 
performance is similar. (Pentair, Public Meeting Transcript, No. 3 at 
pp. 32-33)
    In response to Pentair's comment, DOE notes that it is at the 
manufacturer's discretion to group individual models into a single 
basic model to reduce testing and certification burden or to test and 
certify each individual model as a unique basic model. Regardless of 
whether a manufacturer chooses to group individual models into a basic 
model for purposes of certification, the manufacturer would still be 
required to specify in its certification the individual model numbers 
that fall within the basic model certified, and any representations 
regarding an individual model made in a certification report must be 
consistent with representation as to that individual model made to 
ENERGY STAR.
    Hayward inquired if the same wet end is used within a family, but 
the horsepower of the motor and impeller size changes, such individual 
models could be grouped within the same basic model. (Hayward, Public 
Meeting Transcript, No. 3 at pp. 31-32) Hayward and APSP also requested 
clarity on the verbiage of the definition as well as examples from 
other products. Hayward and APSP asked whether the same product but 
with a different name or label for specific customers would be the same 
``basic model.'' Finally, Hayward and APSP requested elaboration on 
whether a single or multi-stage pump within the same performance 
category and WEF criteria are considered within the same basic model. 
(Hayward, No. 6 at p. 2; APSP, No.8 at p. 4)
    In response to Hayward and APSP's inquiry, DOE notes that, 
consistent with DOE's practice with other products and equipment, DPPP 
manufacturers may elect to group individual pump models that are 
similar, but not identical, into the same basic model to reduce testing 
burden, provided all representations regarding the energy use of pumps 
within that basic model are identical and based on the most consumptive 
unit. See 76 FR 12422, 12423 (March 7, 2011).\23\ However, all 
individual models represented by the same basic model must be in the 
same equipment class.\24\ DOE notes that because standards recommended 
by the DPPP Working Group in the June 2016 DPPP Working Group 
recommendations and adopted by DOE in the January 2017 DPPP DFR 
differentiate and assign different standards to dedicated-purpose pool 
pumps based on their rated hydraulic horsepower, this limits the 
ability of manufacturers to group individual DPPP models that vary in 
capacity. (Docket No. EERE-2015-BT-STD-0008, Recommendation #1, No. 82 
at p. 1; 82 FR 5650, 5743) DOE agrees with Hayward and APSP that a 
product with different names or labels that is otherwise the same could 
be grouped within a basic model. Examples from other products and 
equipment include appliances with varying finishes grouped into one 
basic model; refrigerators with varying door opening sides grouped into 
one basic model, or air conditioners of varying voltages grouped into 
one basic model. DOE notes that the example related to all stage 
versions of a multi-stage pump being required to be in the same basic 
model is a specific requirement for general pumps that DOE does not 
apply to dedicated-purpose pool pumps.
---------------------------------------------------------------------------

    \23\ These provisions allow manufacturers to group individual 
models with essentially identical, but not exactly the same, energy 
performance characteristics into a basic model to reduce testing 
burden. Under DOE's certification requirements, all the individual 
models within a basic model identified in a certification report as 
being the same basic model must have the same certified efficiency 
rating and use the same test data underlying the certified rating. 
The compliance, certification, and enforcement (CCE) final rule also 
establishes that the efficiency rating of a basic model must be 
based on the least efficient or most energy consuming individual 
model (i.e., put another way, all individual models within a basic 
model must be at least as energy efficient as the certified rating). 
76 FR at 12428-29 (March 7, 2011).
    \24\ DOE believes this is what Hayward is referring to in their 
comment when they refer to ``performance category and WEF 
criteria.''
---------------------------------------------------------------------------

    No additional comments were received pertaining to DOE's proposal 
to adopt the general provisions of the general pumps basic model 
definition. Therefore, DOE is adopting the changes to the definition of 
basic model in 10 CFR 431.462, as proposed in the September 2016 DPPP 
test procedure NOPR.

C. Rating Metric

    Overall, the key objectives of any DPPP metric are that it (1) be 
objectively measurable, (2) be representative of the energy use or 
energy efficiency of dedicated-purpose pool pumps, (3) provide an 
equitable differentiation of performance among different DPPP models 
and technologies, (4) be able to compare the energy efficiency of a 
given DPPP model to a minimum standard level, and (5) provide the 
necessary and sufficient information for purchasers to make informed 
decisions regarding DPPP selection.
    As described in the September 2016 DPPP test procedure NOPR, the 
DPPP Working Group focused on defining a performance-based metric that 
is similar to the energy factor (EF) metric currently used to describe 
DPPP

[[Page 36877]]

performance by many existing programs,\25\ but that also accounts for 
the potential energy savings of equipment with multiple operating 
speeds. 81 FR 64580, 64597-64601 (Sept. 20, 2016). Ultimately, the DPPP 
Working Group recommended using the WEF, which is defined as the ratio 
of the volumetric flow provided by the pump, divided by the input power 
to the pump, at one or more load points, where these load points are 
selected depending on the specific DPPP variety and speed 
configuration, as shown in equation (1). The specific load points and 
weights for each DPPP variety are discussed in section III.D.
---------------------------------------------------------------------------

    \25\ As described in the September 2016 DPPP TP NOPR, EF is used 
by California Title 20, APSP, and ENERGY STAR to describe DPPP 
performance. 81 FR 64580, 64598-64600 (Sept. 20, 2016).
[GRAPHIC] [TIFF OMITTED] TR07AU17.000

---------------------------------------------------------------------------
Where:

WEF = weighted energy factor in kgal/kWh;
wi = weighting factor at each load point i;
Qi = flow at each load point i in gpm;
Pi = input power to the motor (or controls, if present) 
at each load point i in W;
i = load point(s), defined uniquely for each DPPP variety; and
n = number of load point(s), defined uniquely for each speed 
configuration.
(Docket No. EERE-2015-BT-STD-0008, No. 51 Recommendation #5 at p. 4)

    DOE agrees with the DPPP Working Group that the recommended WEF 
metric, as shown in equation (1), provides a representative, objective, 
and informative characterization of DPPP performance. Consequently, in 
the September 2016 DPPP test procedure NOPR, DOE proposed to adopt the 
WEF metric as the performance-based metric for representing the energy 
performance of certain styles of dedicated-purpose pool pumps.
    In the September 2016 DPPP test procedure NOPR, DOE requested 
feedback on the proposed metric. CEC stated in written comments that 
CEC supported DOE's proposal to establish a weighted energy factor 
metric. (CEC, No. 7 at p. 2)
    APSP and Hayward commented that they believe that equation (1) in 
the September 2016 DPPP test procedure NOPR (81 FR 64580, 64600),\26\ 
which is used to determine WEF, does not correctly result in the 
weighting of energy factors at the specified load points. (APSP, No. 8 
at p. 4; Hayward, No. 6 at pp. 2-3) Instead, APSP and Hayward proposed 
using the following equation (2), with all variables as defined 
previously:
---------------------------------------------------------------------------

    \26\ Equation (1) in the September 2016 DPPP TP NOPR is 
identical to equation (1) in this document.
[GRAPHIC] [TIFF OMITTED] TR07AU17.001

    DOE responds that equation (1), as published in the September 2016 
DPPP test procedure NOPR, correctly describes the efficiency of DPPP 
equipment and aligns with the recommendation of the DPPP Working Group. 
(Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendation #5 at p. 4) 
DOE notes that the DPPP Working Group evaluated both methods of 
calculating WEF, both the proposed equation (1) and equation (2), as 
recommended by APSP and Hayward. (Docket No. EERE-2015-BT-STD-0008 No. 
49 at pp. 6-9; Docket No. EERE-2015-BT-STD-0008 No. 56 at pp. 24-60) 
The DPPP Working Group ultimately chose to use equation (1) because it 
is more representative of the energy savings to the customer. (Docket 
No. EERE-2015-STD-0008 No. 50 at p. 3) Equation (2) is a weighting of 
the EF values, which results in an exaggeration of the benefits of 
multi-speed and variable-speed technologies, while equation (1) is a 
ratio of the amount of water pumped over the amount of energy consumed 
over a given period of time in real-world applications. (Docket No. 
EERE-2015-BT-STD-0008 No. 56 at pp. 29, 38, 60) That is, 
mathematically, weighting the EF values directly, as shown in equation 
(2), results in a weighted average of the flow values in the numerator, 
but equal weighting of the denominator values, meaning the flow at high 
speed is given more weight than the associated power value at high 
speed. To illustrate this, the calculation of WEF, with both equations, 
for a two-speed, multi-speed, or variable-speed dedicated-purpose pool 
pump with both a low speed and high speed test point is shown in 
equation (3).

[[Page 36878]]

[GRAPHIC] [TIFF OMITTED] TR07AU17.002

    Conversely, equation (1) correctly accounts for the amount of power 
it takes to provide a given amount of flow. That is, equation (1) 
reflects the more realistic case where a pump provides a low flow rate 
for an associated amount of power during a portion of the day and a 
high flow rate for an associate amount of power during another portion 
of the day. If one were to calculate the ``total daily WEF,'' one would 
sum the flow rates throughout the day and the power consumption 
throughout the day and take a ratio of the two; both power and flow 
values would be weighted according to their proportional use during the 
day. Therefore, equation (1) is more representative of the energy 
efficiency of dedicated-purpose pool pumps over a typical cycle of use.
    During the September 2016 DPPP test procedure NOPR public meeting, 
CA IOUs inquired about including standby power as part of the metric 
for dedicated-purpose pool pumps. (CA IOUs, Public Meeting Transcript, 
No. 3 at pp. 91-92) In response to CA IOUs inquiry, DOE explained that 
standby power was discussed during the DPPP Working Group meetings and, 
ultimately, the DPPP Working Group decided not to include standby power 
in the WEF metric due to the negligible impact any standby power 
measurements would have on the final WEF value. (Docket No. EERE-2015-
BT-STD-0008, No. 95 at pp. 229-30) Consistent with the DPPP Working 
Group recommendations, DOE did not propose to include standby power 
measurements nor reporting in the September 2016 DPPP test procedure 
NOPR. While DOE appreciates that some dedicated-purpose pool pumps with 
controls will consume standby power in their idle state and the desire 
to minimize this energy consumption, DOE does not believe the 
additional burden associated with dedicated testing and reporting 
requirements would be justified. Specifically, testing of standby power 
for dedicated-purpose pool pumps would require an additional test 
method and may require different or more specialized power measurement 
equipment to accurately capture the low power during standby operation. 
Furthermore, as the DPPP Working Group did not recommend specific 
requirements for standby energy consumption, such testing would only be 
informative and would not be necessary to determine compliance of 
dedicated-purpose pool pumps. DOE does not believe the additional 
burden associated with establishing test requirements to measure 
standby energy use of dedicated-purpose pool pumps is justified at this 
time. Therefore, in this final rule, DOE is not adopting testing or 
reporting requirements for standby power of dedicated-purpose pool 
pumps.
    In addition to WEF, in the September 2016 DPPP test procedure NOPR, 
DOE also proposed an optional test method for EF at multiple speeds 
and/or system curves and to allow manufacturers and industry to 
continue to describe the energy performance of dedicated-purpose pool 
pumps using the EF metric. 81 FR 64580, 64627-64628 (Sept. 20, 2016). 
DOE typically only includes one primary energy metric, the DOE metric 
that is used for the energy conservation standards, in the test 
procedure to ensure standardization of efficiency representations 
throughout the industry and eliminates potential confusion in the 
market place if multiple non-equivalent metrics are used to describe 
the same piece of equipment. However, in this specific case, DOE 
departed from typical practice due to the interest expressed in the use 
of the EF metric during the DPPP Working Group negotiations. DOE notes 
that, as discussed in more detail in section III.F, representations of 
EF will only be allowed until July 19, 2021, the compliance date of 
standards for dedicated-purpose pool pumps and, if made, must be 
accompanied by a representation of the DOE metric, WEF.

D. Test Methods for Different DPPP Categories and Configurations

    As discussed in section III.C, DOE will characterize the 
performance of dedicated-purpose pool pumps according to the WEF. Due 
to differences in equipment design and typical use profiles, the DPPP 
Working Group recommended that unique weights and load points be 
specified for each DPPP variety and pump speed configuration. Based on 
the recommendations of the DPPP Working Group, in the September 2016 
DPPP test procedure NOPR, DOE proposed unique load points for the 
various speed configurations (e.g., single-speed, two-speed, multi-
speed, or variable-speed dedicated-purpose pool pumps) of self-priming 
and non-self-priming pool filter pumps with a rated hydraulic 
horsepower less than 2.5 hp (section III.D.1). DOE also proposed unique 
load points for waterfall pumps (section 0) and pressure cleaner 
booster pumps (section III.D.3), each of which reference only a single 
load point. 81 FR 64580, 64601-64602 (Sept. 20, 2016). The load points 
for self-priming and non-self-priming pool filter pumps, waterfall 
pumps, and pressure cleaner booster pumps are discussed in the 
subsequent sections.
1. Self-Priming and Non-Self-Priming Pool Filter Pumps
    As noted in section III.B.3.a, self-priming and non-self-priming 
pool filter pumps have different construction characteristics and 
potentially different applications. However, during the Working Group 
meetings, the DPPP Working Group discussed how the performance of these 
two different varieties of pumps is comparable in most instances. 
(Docket No. EERE-2015-BT-STD-0008, No. 57 at pp. 329-331) Therefore, to 
provide comparable ratings between self-priming and non-self-priming 
pool filter pumps, the DPPP Working Group recommended the same 
reference curve, curve C, for self-

[[Page 36879]]

priming and non-self-priming filter pumps. (Docket No. EERE-2015-BT-
STD-0008, No. 51 Recommendation #6 at p. 5) Consistent with the DPPP 
Working Group recommendations, in the September 2016 test procedure 
NOPR, DOE proposed that both self-priming and non-self-priming pool 
filter pumps be tested at specific load points along curve C. 81 FR 
64580, 64602-64603 (Sept. 20, 2016).
    During the September 2016 DPPP test procedure NOPR public meeting, 
CA IOUs did not object to the recommendation, but noted that the 
typical pipe size associated with these curves is a generalization and 
the overall plumbing system can affect the curves as much as the pump 
size in response to DOE's assertion that curve C was representative of 
2.5-inch plumbing. (CA IOUs, Public Meeting Transcript, No. 3 at p. 37) 
In response to CA IOUs observation, DOE agrees with CA IOUs that many 
factors may impact system head. DOE was simply referring to the fact 
that curve C was initially developed to be representative of 2.5-inch 
plumbing,\27\ as is acknowledged in section 4.1.2.1.3 of ANSI/APSP/ICC-
15a-2013.
---------------------------------------------------------------------------

    \27\ PG&E developed curves A, B, and C based data from an 
exercise by ADM Associates, Inc. in 2002, EVALUATION OF YEAR 2001 
SUMMER INITIATIVES POOL PUMP PROGRAM and contractor input. However, 
the actual data for the curves are not contained in the ADM report 
(the ADM report can be found at www.calmac.org/publications/SI_Pool_Pump.pdf; Last accessed April 4, 2016). Curves A and B are 
first formally mentioned in a subsequent report by PG&E in Codes and 
Standards Enhancement Initiative for FY 2004. However, this report 
does not discuss the derivation of the curves. (http://consensus.fsu.edu/FBC/Pool-Efficiency/CASE_Pool_Pump.pdf; Last 
accessed April 29, 2016).
---------------------------------------------------------------------------

    Beyond the proposed system curve, DOE also proposed specific load 
points for each variety of self-priming and non-self-priming pool 
filter pump. The specific load points for single-speed, two-speed, 
multi-speed, and variable-speed pool filter pumps are discussed in 
sections III.D.1.a, III.D.1.b, and III.D.1.c, respectively.
a. Single-Speed Pool Filter Pumps
    Single-speed pool filter pumps, by definition and design, are only 
capable of operating at one speed. In the September 2016 DPPP test 
procedure NOPR, consistent with the DPPP Working Group recommendations 
(Docket No. EERE-2015-BT-STD-0008, No. 51 Recommendation #6 at p. 5), 
DOE proposed testing single-speed pool filter pumps at the pump's 
maximum speed of rotation on curve C. 81 FR 64580, 64603 (Sept. 20, 
2016). That is, the load point for single-speed pool filter pumps would 
be specified as the point of intersection between the pump's 
performance curve at its maximum speed (which is its only speed) and 
the system curve C, as shown in Figure III.1. Id.
[GRAPHIC] [TIFF OMITTED] TR07AU17.003

    CEC, in written comments, supported DOE's proposal to establish a 
load point for single-speed filter pumps. (CEC, No. 7 at p. 2) DOE 
received no other comments related to the proposal to test single-speed 
pool filter pumps at a single load point based on the maximum speed on 
curve C. Therefore, DOE is adopting in this final rule the proposed 
single load point for single-speed pool filter pumps.
b. Two-Speed Pool Filter Pumps
    Two-speed pumps, by definition and design, are capable of operating 
at two discrete speeds. In two-speed pool filter pumps, the low speed 
setting is designed to handle filtration and provide an adequate 
turnover-rate, while the high speed setting operation is designed to be 
used intermittently for short duration periods to operate suction-side 
pool cleaners and ensure proper mixing of the water. Consistent with 
typical two-speed pool filter pump design and the requirements of 
existing regulatory programs, the DPPP Working Group recommended 
testing two-speed pool filter pumps (1) at the load point corresponding 
to the pump's maximum speed of rotation on curve C and (2) at the load 
point corresponding to half of the maximum-speed flow rate with total 
dynamic head at or above curve C.

[[Page 36880]]

(Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendation #6, at p. 5) 
However, in the September 2016 DPPP test procedure NOPR, DOE proposed 
load points that were slightly modified from those recommended by the 
DPPP Working Group. Specifically, DOE proposed the following two load 
points for two-speed pool filter pumps: (1) A high flow point at the 
maximum speed on curve C and (2) a low flow point at the low-speed 
setting on curve C. 81 FR 64580, 64604-64606 (Sept. 20, 2016). As 
explained in the September 2016 DPPP test procedure NOPR, the load 
points recommended by the DPPP Working Group are only possible for 
pumps with the low-speed setting equivalent to one-half of the rotating 
speed of the maximum speed setting. DOE proposed the modification 
because DOE believed the DPPP Working Group recommendation, as written, 
would not provide equitable or representative ratings for any two-speed 
pool filter pumps with a low speed that was less than one-half the 
maximum speed setting. Id.
    DOE also proposed certain criteria for the low flow point to 
prevent manufacturers from producing pumps with unrepresentatively high 
(i.e., advantageous) WEF scores by designing pumps with an extremely 
low speed setting. Id. Specifically, DOE proposed minimum flow rates 
for two-speed pumps of 24.7 gpm for two-speed pool filter pumps that 
have a rated hydraulic horsepower less than or equal to 0.75 hp (small 
pool filter pumps) and 31.1 gpm for two-speed pool filter pumps that 
have a rated hydraulic horsepower greater than 0.75 (large pool filter 
pumps). DOE's proposed minimum flow rates are consistent with the DPPP 
Working Group's recommended low flow rates for multi-speed and 
variable-speed pool filter pumps. (Docket No. EERE-2015-BT-STD-0008, 
No. 51, Recommendation #6 at p. 5); 81 FR 64580, 64604-06 (Sept. 20, 
2016). The DPPP Working Group developed these low flow rates based on 
the minimum effective flow rates for typical pool sizes. DOE believes 
these flow rates are also representative of minimum flow rates for two-
speed pool filter pumps and they will effectively prevent the inclusion 
of unreasonably low speeds on two-speed pool filter pumps for the sole 
purpose of inflating WEF ratings. 81 FR 64580, 64604-06 (Sept. 20, 
2016).
    DOE believes that the proposed load points for two-speed pool 
filter pumps are representative of typical pool filter pump operation 
and energy performance, and the load points characterize the efficiency 
of the pump speeds and flow points in typical applications (i.e., 
cleaning/mixing and filtration). In addition, DOE believes that the 
proposal is consistent with the intent of the DPPP Working Group.
    During the September 2016 DPPP test procedure NOPR public meeting, 
CA IOUs confirmed that two-speed pool filter pumps with low speed below 
one-half of maximum speed are a reasonable scenario and supported DOE's 
proposed load points to address this scenario. (CA IOUs, Public Meeting 
Transcript, No. 3 at pp. 39-41) ASAP, NRDC, and CEC, in written 
comments, supported DOE's proposal to establish load points for two-
speed pool filter pumps and did not articulate any different 
suggestions to the proposed test procedure. (ASAP and NRDC, No. 12 at 
p. 2; CEC, No. 7 at p. 2) ASAP and NRDC also commented that proposed 
load points would provide consistent and comparable ratings among two-
speed filter pumps. (ASAP and NRDC, No. 12 at p. 2)
    DOE appreciates the support of CA IOUs, ASAP, NRDC, and CEC. DOE 
received no other comments related to the proposed test procedure for 
two-speed pool filter pumps. Therefore, DOE is adopting in this final 
rule the proposed load points at low and high speed for two-speed pool 
filter pumps, as well as the minimum flow rate thresholds of 24.7 gpm 
for two-speed pool filter pumps that have a hydraulic output power less 
than or equal to 0.75 hp (small pool filter pumps) and a low flow rate 
of 31.1 gpm for two-speed pool filter pumps that have a hydraulic 
output power greater than 0.75 and less than 2.5 hp (large pool filter 
pumps).
c. Variable-Speed and Multi-Speed Pool Filter Pumps
    In accordance with the DPPP Working Group recommendations, in the 
September 2016 DPPP test procedure NOPR, DOE proposed different 
definitions for variable-speed and multi-speed pool filter pumps (see 
section III.B.7.a), but proposed the same test procedure be applied to 
both speed configurations. (Docket No. EERE-2015-BT-STD-0008, No. 51, 
Recommendation #6, at p. 5); 81 FR 64580, 64606-64610 (Sept. 20, 2016). 
For variable- and multi-speed pool filter pumps, DOE proposed two load 
points that are generally representative of a high-speed mixing/
cleaning flow rate and a low-speed filtration flow rate, similar to 
two-speed pool filter pumps (as discussed in section III.D.1.b). 
However, the high-speed and low-speed load points for variable- and 
multi-speed equipment are specified in a slightly different manner than 
for two-speed equipment. 81 FR 64580, 64606-64610 (Sept. 20, 2016).
    As DOE discussed in the September 2016 DPPP test procedure NOPR, 
the DPPP Working Group recommended (Docket No. EERE-2015-BT-STD-0008, 
No. 51, Recommendation #6 at p. 5), and DOE subsequently proposed, 
testing multi- and variable-speed pool filter pumps at two load points. 
These points are (1) a high-flow load point that is achieved by running 
the pump at 80 percent of flow rate at maximum speed on or above curve 
C and (2) a low-flow load point that is representative of a specific, 
typical filtration flow rate, as opposed to a specific speed setting or 
relative reduction from maximum speed (also on or above curve C), as 
summarized in Table III.3. 81 FR 64580, 64606-64610 (Sept. 20, 2016).

   Table III.3--Variable- and Multi-Speed Load Points Recommended by DPPP Working Group and Proposed by DOE in
                                     September 2016 DPPP Test Procedure NOPR
----------------------------------------------------------------------------------------------------------------
           Load point                      Flow rate (gpm)                 Head (ft)            Speed (rpm)
----------------------------------------------------------------------------------------------------------------
High Speed.....................  Qhigh (gpm) = 0.8xQmax\speed@C *     H >=0.0082 x        Lowest available speed
Low Speed......................  Qlow (gpm) =                          Qhigh\2\            for which the pump
                                  If pump hydraulic hp at     H >=0.0082 x         can achieve the
                                  max speed on curve C is >0.75,       Qlow\2\             specified flow rate
                                  then Qlow = 31.1 gpm                                     (a pump may vary
                                  If pump hydraulic hp at                          speed to achieve this
                                  max speed on curve C is <=0.75,                          load point).
                                  then Qlow = 24.7 gpm
----------------------------------------------------------------------------------------------------------------
* Qmax\speed@C = flow at maximum speed on curve C.


[[Page 36881]]

    The high speed load point corresponding to a flow rate of 80 
percent of the flow at maximum speed on curve C was recommended by the 
DPPP Working Group to reflect that multi- and variable-speed pool 
filter pumps can be optimized to account for the oversizing the 
typically occurs in the field and provide a specific desired amount of 
flow that may be less than the flow rate at maximum speed. Id. In the 
September 2016 DPPP test procedure NOPR, DOE discussed that, for multi-
speed pumps without a speed setting at 80 percent of the maximum speed 
setting, the high flow point would be determined at the maximum 
operating speed of the pump and may not be on curve C. 81 FR 64580, 
64607 (Sept. 20, 2016). Such a pump would need to be tested at a speed 
setting higher than 80 percent of maximum and throttled to a head 
pressure higher than curve C to achieve a flow rate of 80 percent of 
the flow rate at maximum flow on curve C, as shown in Figure III.2.
[GRAPHIC] [TIFF OMITTED] TR07AU17.004

    To specify the low flow points for multi-speed and variable-speed 
pool filter pumps, the DPPP Working Group developed specific, discrete 
flow rates that are representative of the typical flow rates observed 
in the field. (Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendation 
#6 at p. 5) That is, as discussed in the September 2016 DPPP test 
procedure NOPR, the DPPP Working Group recommended that ``small pool 
filter pumps'' with rated hydraulic horsepower values of less than or 
equal 0.75 would be assigned a flow rate of 24.7 gpm, which is 
representative of the flow rate necessary for filtration in smaller 
pools. The DPPP Working Group also recommended that ``large pool filter 
pumps'' with rated hydraulic horsepower values greater than 0.75 and 
less than or equal to 2.5 would be assigned a flow rate of 31.1 gpm, 
which is representative of the flow rate necessary for filtration in 
large pools. The selected low flow rates for small and large multi-
speed and variable-speed pool filter pumps are intended to be 
representative of the applications such pumps would typically serve. 
The methodology for developing the specific flow rates for small and 
large multi-speed and variable-speed pool filter pumps is discussed at 
length in the September 2016 DPPP test procedure NOPR. 81 FR 64580, 
64606-64610 (Sept. 20, 2016).
    DOE's proposal for the high flow and low flow points for multi-
speed and variable-speed pumps does not explicitly specify the speed at 
which the pump operates at the high or low flow points. Instead, DOE 
determined that the low and high flow rates would be achieved at the 
lowest available speed while operating on or above curve C to 
accommodate multi-speed pumps that may not be capable of operating at 
the exact speed that allows the pump to achieve the required flow rate 
exactly on curve C. For such a pump, DOE established that the pump be 
tested at the lowest available speed that can meet the specified flow 
with a head point that is at or above curve C. Id.
    In the September 2016 DPPP test procedure NOPR, DOE requested 
comment on the treatment of multi-speed pumps and the necessity to 
throttle multi-speed pumps on the maximum speed performance curve if 
appropriate lower discrete operating speeds are not available to 
achieve 80 percent of the flow rate at maximum speed on curve C while 
still maintaining head at or above curve C. 81 FR 64580, 64608 (Sept. 
20, 2016).
    In response, CEC supported DOE's proposal to establish load points 
for multi-speed and variable-speed pool filter pumps. However, CEC did 
not advocate for any different values compared to DOE's proposal. (CEC, 
No.

[[Page 36882]]

7 at p. 2). Pentair requested clarification during the September 2016 
DPPP test procedure NOPR public meeting and in written comments 
regarding whether the high flow load point for multi-speed and 
variable-speed pool filter pumps was specified with respect to 80 
percent flow or 80 percent speed. (Pentair, Public Meeting Transcript, 
No. 3 at p. 48; Pentair, No. 11 at p. 4) APSP reiterated Pentair's 
comments that flow and speed were used interchangeably in the September 
2016 DPPP test procedure NOPR and recommended that the test procedure 
be standardized on a percentage of flow requirements (APSP, No. 8 at p. 
2). Consistent with APSP's recommendation, in this final rule, DOE 
clarifies that the high flow load point for multi-speed and variable-
speed pool filter pumps is specified with respect to at 80 percent of 
the flow rate at maximum speed on curve C.
    APSP and Pentair also commented that throttling multi-speed pumps 
to obtain 80 percent flow moves the pump off of curve C, which is 
otherwise the standardized performance curve proposed by DOE in the 
test procedure NOPR. Pentair commented that throttling and testing off 
of curve C makes direct product performance comparisons impossible, and 
has the potential to overstate the performance of less efficient and 
less capable pumps. (APSP, No. 8 at pp. 4-5; Pentair, No. 11, at p. 2) 
Pentair similarly expressed concern over the low flow load points. 
Pentair agreed that 24.7 gpm and 31.1 gpm are reasonable minimum flow 
rates for typical swimming pool applications. However, Pentair stated 
that fixing the low-speed load point at one of these two values would 
create an unfair bias against higher capacity pumps that are designed 
for high-flow, low-head systems. (Pentair, No. 11 at p. 2) At the test 
procedure NOPR public meeting, Pentair suggested that multi-speed pumps 
that cannot be tested at 80 percent of the flow rate at maximum speed 
on curve C be tested at their maximum speed on curve C. (Pentair, 
Public Meeting Transcript, No. 3 at pp. 42-43) Pentair did not provide 
a specific recommendation for the low flow load points.
    In response to Pentair and APSP's dissatisfaction with DOE's 
proposal to allow throttling multi-speed pumps, DOE agrees with Pentair 
and APSP's concerns that throttling and testing off of curve C may 
result in WEF values that are not directly representative of the 
typical energy performance of the pump in the field, as users are 
unlikely to throttle pumps to compensate for oversizing. In assessing 
Pentair and APSP's concerns, DOE recognized that the multi-speed pump 
load points specified in the December 2015 DPPP Working Group 
recommendations did not explicitly mention or require throttling. 
Specifically, for flow, the term sheet stated ``same method as variable 
speed, but testing at closest available speed that can meet the 
specified flow (while at or above Qlow or Qhigh, 
respectively).'' For head, the term sheet stated: ``H >= 0.0082 x 
Qhigh\2\.'' (Docket No. EERE-2015-BT-STD-0008, No. 51, 
Recommendation #6 at p. 5) Allowing flow to be ``at or above'' 
Qhigh and ``at or above'' 0.0082 x Qhigh\2\ means 
that a multi-speed pump that does not have an 80 percent speed setting 
could test exactly on curve C with a flow rate at or above 80 percent 
of the flow rate at maximum speed on curve C, as suggested by Pentair, 
and still meet the load point requirements laid out by the DPPP Working 
Group in the December 2015 term sheet. Id.
    Consequently, DOE acknowledges that its proposal in the September 
2016 DPPP test procedure NOPR to require throttling of multi-speed 
pumps was based on one possible interpretation of the December 2015 
DPPP Working Group recommendations, while Pentair's proposal to test on 
curve C as the lowest speed that resulted in a flow rate at or above 80 
percent of the flow rate at maximum speed on curve C is based on 
another possible interpretation. That is, as written, the December 2015 
DPPP Working Group recommendations allow multiple interpretations of 
the appropriate load points for multi-speed pool filter pumps. In the 
September 2016 DPPP test procedure NOPR, DOE proposed the test method 
that required fixing the flow point at 80 percent of the flow rate at 
maximum speed on curve C (i.e., Qhigh = 0.8 x 
Qmax_speed@C) because DOE's test procedure must be precise 
and repeatable and, therefore, must provide additional specificity 
beyond that specified by the DPPP Working Group. However, DOE 
acknowledges that Pentair's suggestion of fixing the head value on 
curve C (H = 0.0082 x Qhigh\2\) and allowing flow rates 
above 80 percent of the flow rate at maximum speed on curve C is 
another viable method to provide the requisite additional specificity 
and precision in the multi-speed test method. DOE also acknowledges 
that, as mentioned by Pentair and APSP, that throttling off of curve C 
would be a departure from the standardized system curve and would 
result in WEF values that are less representative of the typical energy 
performance of such multi-speed pumps. Instead, multi-speed pumps would 
more likely be operated on the standardized system curve (i.e., curve 
C) at the lowest speed available at or above 80 percent of the flow 
rate at maximum speed on curve C (i.e., the flow rate the DPPP Working 
Group believed was ``required'' for high flow mixing in pumps that are 
oversized). Therefore, in this final rule, DOE is revising the load 
points for multi-speed pumps to require the head value to be on curve 
C, as suggested by Pentair, but allow the flow value to be greater than 
or equal to 80 percent of the flow rate at maximum speed on curve C. As 
noted previously, this test method is consistent with that recommended 
by the DPPP Working Group.
    With regard to the low flow load points, DOE responds that the DPPP 
Working Group recommended that the low-speed load point for variable- 
and multi-speed pumps be measured at either 24.7 gpm or 31.1 gpm, 
depending on the pump hydraulic horsepower at maximum speed on curve C. 
(Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendation #6 at p. 5) 
As discussed at length in the September 2016 DPPP test procedure NOPR, 
the DPPP Working Group recommended these values to allow for more 
comparable WEF values among pool filter pumps intended to serve the 
same size pools. 81 FR 64580, 64606-64610 (Sept. 20, 2016). While 
Pentair noted in its comments that this construct may bias higher 
capacity (high flow, low head) pumps, DOE notes that in general, higher 
capacity pumps have been excluded from the scope of this rulemaking. In 
addition, as discussed previously, these low flow points were chosen 
specifically to represent typical filtration flow rates that would be 
experienced in the majority of pools, regardless of the size of the 
pump. That is, the required filtration flow rate is dictated more by 
the size of the pool than the size of the pump. Converse to Pentair's 
observation, the ability of larger pumps to reduce their speed to 
achieve these low flow rates will potentially result in higher (i.e., 
better) WEF scores than slightly small dedicated-purpose pool pumps 
serving the same load.
    For these reasons, DOE is adopting in this final rule the low speed 
load points of 24.7 gpm and 31.1 gpm, as proposed, in the September 
2016 DPPP TP NOPR. However, for multi-speed pumps, DOE acknowledges 
that the low speed may not result in a flow rate that is exactly 24.7 
or 31.1 gpm while on curve C and throttling may be required to achieve 
the flow points proposed in the NOPR. As discussed previously, DOE 
agrees with Pentair and APSP that throttling

[[Page 36883]]

may not be representative of the performance of multi-speed dedicated-
purpose pool pumps in the field. Therefore, based on the same reasoning 
as the high flow point, DOE is revising the low flow point for multi-
speed dedicated-purpose pool pumps to also require testing along curve 
C, but allow flow rates at or above the specified values. Specifically, 
the adopted load points are presented in Table III.4.

               Table III.4--Multi-Speed and Variable-Speed Load Points Adopted in This Final Rule
----------------------------------------------------------------------------------------------------------------
             Load point                    Flow rate  (gpm)             Head  (ft)             Speed  (rpm)
----------------------------------------------------------------------------------------------------------------
High Speed.........................  Qhigh (gpm) >=0.8 x          H = 0.0082 x Qhigh\2\   Lowest available speed
Low Speed..........................   Qmax\speed@C *               (i.e., on Curve C)      for which the pump
                                     Qlow (gpm) =...............  H = 0.0082 x Qlow\2\     can achieve the
                                      If pump hydraulic    (i.e., on Curve C).     specified head value
                                      hp at max speed on curve C                           and flow rate
                                      is >0.75, then Qlow >=31.1                           threshold (a pump may
                                      gpm.                                                 vary speed to achieve
                                      If pump hydraulic                            this load point).
                                      hp at max speed on curve C
                                      is <=0.75, then Qlow
                                      >=24.7 gpm.
----------------------------------------------------------------------------------------------------------------
* Qmax\speed@C = flow at maximum speed on curve C.

    DOE believes that the load points shown in Table III.4 are 
consistent with the intent of the DPPP Working Group while addressing 
the concerns brought by Pentair and APSP for multi-speed pool filter 
pumps.
    With regard to the variable-speed load points, DOE notes that the 
load points recommended by the DPPP Working Group were specified 
clearly as exactly equivalent to 24.7 or 31.1 gpm for the low flow load 
point and 80 percent of the flow rate at maximum speed on curve C for 
the high flow load point. (Docket No. EERE-2015-BT-STD-0008, No. 51, 
Recommendation #6 at p. 5) The DPPP Working Group discussed and 
recommended these load points based on the understanding that a 
variable-speed dedicated purpose pool pump would be equipped with a 
continuously variable control that could exactly achieve the load 
points specified in the test procedure or desired by a user in the 
field. However, DOE notes that the definition for variable-speed 
dedicated-purpose pool pump recommended by the DPPP Working Group and 
adopted by DOE references a maximum increment between available 
operating speeds of 100 rpm. Based on the adopted definition it is 
possible that a variable-speed dedicated-purpose pool pump with 
extremely wide speed increments (e.g., 95 rpm) will not be able to 
exactly achieve the flow points specified by the DPPP Working Group. 
DOE notes that the definition for variable-speed dedicated-purpose pool 
pump was not finalized by the DPPP Working Group until after the load 
points for variable-speed dedicated-purpose pool pump had already by 
been established and approved. Therefore, the DPPP Working Group did 
not explicitly consider a scenario where a variable-speed dedicated-
purpose pool pump would not be able to exactly achieve the specified 
flow points.
    DOE believes that, similar to multi-speed pool filter pumps, it is 
unlikely that a user would throttle the pump in the field to achieve a 
specific flow rate. Instead, DOE believes it would be more 
representative and consistent to also require variable-speed pool 
filter pumps to be tested on curve C at the lowest speed that results 
in a flow rate at or above the flow rate specified by the DPPP Working 
Group, similar to the load points specified for multi-speed pool filter 
pumps. Therefore, DOE is adopting, in this final rule, the same load 
points for multi-speed and variable-speed pool filter pumps, as 
summarized in Table III.4.
    In response to the multi-speed load points proposed in the 
September 2016 DPPP test procedure NOPR, Hayward commented that the 
proposed criteria for multi-speed pumps would severely penalize less 
capable multispeed pumps [without a discrete operating speed at 80 
percent of flow rate at maximum speed on curve C]. (Hayward, No. 6 at 
p. 3) In response to Hayward's concerns regarding the penalization of 
multi-speed pumps, DOE acknowledges that the test procedure (both as 
proposed in the NOPR and as adopted in this final rule) will indeed 
``penalize'' (i.e., generate less advantageous WEF score for) less 
capable multi-speed pumps that cannot exactly achieve 80 percent of the 
flow rate at maximum speed on curve C. This is by-design and in 
agreement with the recommendations of DPPP Working Group, because such 
pumps provide the end-user less utility and are more likely to be run 
at higher-speeds and consume more energy than pumps that can reach 80 
percent of the flow rate at maximum speed on curve C. Furthermore, the 
disadvantage in WEF score is commensurate with the reduced speed 
capability of the pump--the closer the pump can get to the 80 percent 
load point (with speed reduction), the better the pump's WEF score will 
be. For this reason, DOE is adopting its proposals as to the treatment 
of multi-speed pumps in this final rule, except as noted in this 
section.
    Pentair raised a concern that an unintended consequence of 
specifying the high flow load point based on 80 percent flow was that 
manufacturers may start designing pool filter pumps with an 80 percent 
speed setting, even if it is not the best optimization for the pump for 
specific applications. (Pentair, Public Meeting Transcript. No. 3 at p. 
46) In response, DOE acknowledges Pentair's concern, but notes that the 
80 percent load point was selected by the DPPP Working Group to be 
representative of the amount of ``right-sizing'' that would be possible 
in typical applications. (EERE-2015-BT-STD-0008, No. 57 at pp. 388-405; 
CA IOUs, No. 53 at pp. 142-143; Waterway, No. 54 at p. 51) As such, DOE 
believes the 80 percent setting is representative of a speed setting 
that would reliably result in energy savings in the field for typical 
applications. However, DOE acknowledges that for some applications the 
80 percent speed setting may not be the most appropriate choice. DOE 
notes that, if specific applications necessitate different speed 
settings, manufacturers may continue to produce such equipment to serve 
the market need for equipment with specific speed settings. The DOE 
test procedure does not affect the flexibility of manufacturers to 
produce equipment that is demanded by the market; it just describes how 
to rate such equipment.
    Additionally, Hayward and APSP pointed out a discrepancy between 
Table 1 in the regulatory text of the September 2016 DPPP test 
procedure NOPR and the language presented in the rest of the NOPR. 
Specifically, Hayward noted that the required head for the variable-
speed and multi-speed high flow load point should be ``H >= 0.0082 x 
Qlow\2\,'' rather than ``H = 0.0082 x

[[Page 36884]]

Qlow\2\,'' which was printed in Table 1 of the September 
2016 DPPP test procedure NOPR. (Hayward, No. 6 at p. 3; APSP, No. 8 at 
p. 4) DOE agrees with Hayward and APSP. A typographical error occurred 
in Table 1 in the September 2016 DPPP test procedure NOPR and the 
equation should have read ``H >= 0.0082 x Qlow\2\'' based on 
the proposed load points for multi-speed dedicated purpose pool pumps. 
However, based on the adopted load points, DOE is specifying the load 
points as depicted in Table III.4, which have the appropriate 
mathematical operators.
    During the September 2016 DPPP test procedure NOPR public meeting, 
Pentair also requested verification regarding Figure III.5 in the 
September 2016 DPPP test procedure NOPR and a similar figure in the 
September 2016 DPPP test procedure NOPR public meeting presentation. 
(Pentair, Public Meeting Transcript, No, 3, p. 54) DOE acknowledged 
during the September 2016 DPPP test procedure NOPR public meeting that 
the public meeting presentation slide was correct and Figure III.5 in 
the September 2016 DPPP test procedure NOPR was incorrect.\28\ 
Accordingly, in this final rule, DOE includes the corrected and 
clarified version of the figure, which is labeled Figure III.2 in this 
final rule.
---------------------------------------------------------------------------

    \28\ The public meeting slides can be found in the docket 
(www.regulations.gov/#!docketDetail;D=EERE-2016-BT-TP-0002) No. 2 at 
p. 31.
---------------------------------------------------------------------------

    APSP and Zodiac also requested clarification regarding how the 
high-speed flow point is based on a flow rate of 80 percent of the flow 
rate at maximum speed on curve C and head at or above curve C. (APSP, 
No. 8 at p. 4; Zodiac, No. 13 at p. 2) DOE responds that, as discussed 
in the September 2016 DPPP test procedure NOPR, the DPPP Working Group 
recommended the high speed load point corresponding to a flow rate of 
80 percent of the flow at maximum speed on curve C to reflect that 
multi- and variable-speed pool filter pumps can be optimized to account 
for the oversizing the typically occurs in the field and provide a 
specific desired amount of flow that may be less than the flow rate at 
maximum speed. 81 FR 64580, 64606-64610 (Sept. 20, 2016).
    Finally, APSP and Zodiac commented that they would like to see a 
tolerance for the 80 percent load point for multi-speed and variable-
speed pool filter pumps, as a speed of 80.00 percent exactly would be 
difficult to achieve. (APSP, No. 8 at p. 5; Zodiac, No. 13 at p. 2). In 
response, DOE clarifies that the neither the load points proposed in 
the September 2016 DPPP test procedure NOPR nor the load points adopted 
in this final rule for multi-speed and variable-speed pool filter pumps 
require exact speeds to be achieved. Instead, the load points specify 
specific head or flow values that must be achieved at the lowest 
available speed for which the pump can achieve the specified flow rate 
and/or head value; a pump may vary speed to achieve this load point. 
DOE proposed and is adopting thresholds on the specified head or flow 
values to account for experimental variability, which are discussed in 
section III.E.2.d.
d. Load Point Weighting Factors
    WEF is calculated as the weighted average flow rate divided by the 
weighted average input power to the dedicated-purpose pool pump at 
various load points, as described in equation (1). For this reason, DOE 
also must assign weights to the load points discussed above for each 
self-priming or non-self-priming pool filter pump. In the September 
2016 DPPP test procedure NOPR, consistent with the DPPP Working Group 
recommendations (Docket No. EERE-2015-BT-STD-0008, No. 51 
Recommendation #7 at p. 5) as well as DOE's own analysis, DOE proposed 
a weight of 1.0 for single-speed self-priming and non-self-priming pool 
filter pumps and weights of 0.20 at the high flow point and 0.80 at the 
low flow point for two-speed, multi-speed, and variable-speed pool 
filter pumps, as summarized in Table III.5. 81 FR 64580, 64610 (Sept. 
20, 2016).

Table III.5--Summary of Load Point Weights (wi) for Self-Priming and Non-
  Self-Priming Pool Filter Pumps Recommended by the DPPP Working Group
------------------------------------------------------------------------
                                                     Load point(s) i
        DPPP varieties            Speed type   -------------------------
                                                  Low flow    High flow
------------------------------------------------------------------------
Self-Priming Pool Filter       Single.........  ...........          1.0
 Pumps and Non-Self-Priming    Two/Multi/              0.80         0.20
 Pool Filter Pumps.             Variable.
------------------------------------------------------------------------

    DOE requested comment on these proposed weights. In response to 
DOE's proposed weights, APSP and Zodiac stated that unbalanced 
weighting of the economical single-speed pumps negatively affects 
consumers who only operate pools for a short seasonal duration. (APSP, 
No. 8 at p. 5; Zodiac, No. 13 at p. 2) DOE acknowledges that pool pumps 
with more than one speed, such as two-speed, multi-speed, and variable-
speed dedicated-purpose pool pumps, will have a greater (i.e., more 
efficient) WEF score than a single-speed pump. However, this is 
consistent with the intent of the DPPP Working Group and the typical 
energy consumption of such pumps in the field. That is, single-speed 
pumps will use more energy than comparable two-speed, multi-speed, or 
variable-speed pumps. DOE also disagrees with APSP and Zodiac that a 
load point of 1.0 for single-speed pool filter pumps is ``unbalanced'' 
because, as recommended by the DPPP Working Group, single-speed pool 
pump operate at only one load point, which must be fully weighted in 
order to accurately and equitably account for the energy performance of 
such pumps.
    APSP and Hayward agreed with the 0.8 value for low flow for two-
speed pool filter pumps. (APSP, No. 8 at p. 5; Hayward, No. 6 at p. 3) 
CEC, in written comments, affirmed DOE's proposal to establish 
weighting factors for single-speed, two-speed, multi-speed, and 
variable-speed pool filter pumps. (CEC, No. 7 at p. 2) As such, DOE is 
adopting, in this final rule, the weights proposed in the September 
2016 DPPP test procedure NOPR.
e. Applicability of Two-Speed, Multi-Speed, and Variable-Speed Pool 
Filter Pump Test Methods
    As discussed in section III.B.7, DOE proposed in the September 2016 
DPPP test procedure NOPR to establish specific definitions for two-
speed, multi-speed, and variable-speed dedicated-purpose pool pumps 
that would dictate which of the pool filter pump test methods applies 
to a given

[[Page 36885]]

pool filter pump. The specific test methods for each of the DPPP speed 
configurations are described in sections III.D.1.a through III.D.1.c. 
The definitions for two-speed, multi-speed, and variable-speed 
dedicated-purpose pool pumps establish specific criteria that any given 
dedicated-purpose pool pump must meet in order to be considered such a 
pump and be eligible to apply the test points for two-speed, multi-
speed, and variable-speed pool filter pumps, respectively. If a 
dedicated-purpose pool pump does not meet the definition of a two-
speed, multi-speed, or variable-speed dedicated-purpose pool pump 
discussed in section III.B.7, DOE proposed in the September 2016 DPPP 
test procedure NOPR that such a pump would be tested using the single-
speed pool filter pump test point, regardless of the number of 
operating speeds the pump may have. 81 FR 64580, 64610 (Sept. 20, 
2016).
    In the September 2016 DPPP test procedure NOPR, consistent with the 
recommendations of the DPPP Working Group (Docket No. EERE-2015-BT-STD-
0008, No. 82, Recommendation #5B at p. 3), DOE also proposed that two-
speed self-priming pool filter pumps that are greater than or equal to 
0.711 rated hydraulic horsepower and less than 2.5 rated hydraulic 
horsepower must also be distributed in commerce either: (1) With a pool 
pump control (variable speed drive and user interface or switch) that 
changes the speed in response to pre-programmed user preferences and 
allows the user to select the duration of each speed and/or the on/off 
times or (2) without a pool pump control with such capability but is 
unable to operate without the presence of such a pool pump control. Id. 
DOE also proposed that two-speed self-priming pool filter pumps (in the 
referenced size range) that do not meet the proposed control 
requirements would be tested as a single-speed pool filter pump. Id.
    Hayward commented, at the September 2016 DPPP test procedure NOPR 
public meeting, that two-speed dedicated-purpose pool pumps should be 
allowed to operate at low speed without the requisite control, instead 
of not able to operate at all. (Hayward, Public Meeting Transcript, No. 
3 at pp. 21, 26-27) DOE addressed this comment in section III.B.7.a. In 
that section, DOE noted that DOE believes the two-speed DPPP test 
points are only applicable to and representative of two-speed 
dedicated-purpose pool pumps operated with the appropriate controls. If 
a two-speed dedicated-purpose pool pump is capable of operating, even 
at low speed, without an applicable pool pump control, this 
significantly increases the risk that two-speed pool filter pumps would 
be installed and operated without an appropriate control. Similarly, 
with regard to the applicability of the two-speed test points, DOE 
believes that two-speed dedicated-purpose pool pumps greater than 0.711 
rated hydraulic horsepower must be distributed in commerce with either 
an appropriate control or not able to operate without the presence of 
such a pool pump control in order to apply the two-speed dedicated-
purpose pool pump test points. If the pump can operate without an 
appropriate control, even at low speed, the two-speed test points would 
not be representative of the pump's energy performance in the field. 
DOE did not receive any comments on this proposal. Therefore, DOE is 
adopting in this final rule the requirements for applying the two-speed 
dedicated-purpose pool pump test points proposed in the September 2016 
DPPP test procedure NOPR, which was agreed to by all DPPP Working Group 
members as part of the June 2016 DPPP Working Group Recommendations.
2. Waterfall Pumps
    DOE also proposed a unique test point for waterfall pumps in the 
September 2016 DPPP test procedure NOPR. 81 FR 64580, 64610-64611 
(Sept. 20, 2016). Under the definition discussed in section III.B.4.a, 
waterfall pumps are pool filter pumps that have a maximum head less 
than or equal to 30 feet and a maximum speed less than or equal to 
1,800 rpm. As discussed in the September 2016 DPPP test procedure NOPR, 
waterfall pumps are specialty-purpose single-speed, pool filter pumps 
that typically operate waterfalls or other water features in a pool. 
Id.
    Because of these specific applications, the DPPP Working Group 
recommended a single unique test point at a fixed head of 17 feet and 
the maximum operating speed for waterfall pumps, which the DPPP Working 
Group believed was representative of typical applications. Consistent 
with the single recommended load point, the DPPP Working Group also 
recommended fully weighting that load point (i.e., assigning it a 
weight of 1.0). (Docket No. EERE-2015-BT-STD-0008, No. 51 
Recommendation #6 at p. 5)
    DOE agreed with the DPPP Working Group recommendations; however, 
DOE slightly modified the recommendation by adding greater specificity 
to the head value in DOE's proposal. DOE proposed to test waterfall 
pumps at a single load point at maximum speed and a head of 17.0 feet 
and to fully weight that single load point. 81 FR 64580, 64610-64611 
(Sept. 20, 2016). DOE received no comment on the proposal and, 
therefore, is adopting the load point and weighting for waterfall pumps 
proposed in the September 2016 DPPP test procedure NOPR.
3. Pressure Cleaner Booster Pumps
    DOE also proposed a unique test point for pressure cleaner booster 
pumps in the September 2016 DPPP test procedure NOPR. 81 FR 64580, 
64611-64612 (Sept. 20, 2016). Pressure cleaner booster pumps, as 
defined in section III.B.4.b, are dedicated-purpose pool pumps that are 
specifically designed to propel pressure-side pool cleaners along the 
bottom of the pool in pressure-side cleaner applications. These 
pressure-side cleaner applications require a high amount of head and a 
low flow. In the December 2015 DPPP Working Group recommendations, the 
DPPP Working Group had recommended a single, fixed load point of 90 
feet of head at maximum speed based on the fact that any given 
pressure-side pool cleaner application is typically a single, fixed 
load point. (Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendations 
#6) However, in the second round of negotiations, the DPPP Working 
Group reevaluated the recommended test procedure for pressure cleaner 
booster pumps and its ability to representatively evaluate and 
differentiate the potentially variable energy performance of different 
pressure cleaner booster pump technologies. Specifically, to better 
capture the potential for variable-speed pressure cleaner booster 
pumps, in the June 2016 DPPP Working Group recommendations, the DPPP 
Working Group revised the recommended test point for pressure cleaner 
booster pumps to be a flow rate of 10 gpm at the minimum speed that 
results in a head value at or above 60 feet. (Docket No. EERE-2015-BT-
STD-0008, No. 82, Recommendation #8 at pp. 4-5)
    In either case, as only a single load point is required to 
adequately characterize the efficiency of pressure cleaner booster 
pumps, the DPPP Working Group recommended a weighting factor of 1.0 for 
measured performance at that single load point when calculating WEF. 
(Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendation #6 and #7 at 
p. 5)
    In the September 2016 DPPP test procedure NOPR, DOE proposed to 
adopt the load point and weighting recommended in the June 2016 DPPP 
Working Group recommendations; however, DOE added specificity to the 
flow and head values in the September 2016 DPPP test procedure NOPR. 
Specifically, DOE proposed to test

[[Page 36886]]

pressure cleaner booster pumps at a single load point of 10.0 gpm at 
the minimum speed that results in a head value at or above 60.0 feet 
and to weight the measured performance of the pump at that load point 
with a weighting factor of 1.0. 81 FR 64580, 64611-64612 (Sept. 20, 
2016).
    In response to DOE's proposed test method for pressure cleaner 
booster pumps, APSP and Zodiac commented that the proposed test point 
seemed reasonable. (APSP, No. 8 at p. 5; Zodiac, No. 13 at p. 2). DOE 
thanks APSP and Zodiac for their supportive comments.
    In written comments, Pentair stated that it would be more 
appropriate to base the load point for pressure cleaner booster pump 
testing on a system friction curve instead of a defined single point. 
(Pentair, No. 11 at p. 3) In response, DOE notes that the proposed load 
point for pressure cleaner booster pumps was developed based on input 
from the DPPP Working Group and available information regarding the 
representative operating characteristics for such pumps. Specifically, 
the DPPP Working Group recommended a load point of 10 gpm at the 
minimum speed that results in a head value at or above 60 feet, because 
this scenario accommodates all pressure cleaner booster pumps on the 
market. At the same time this scenario also accounts for the potential 
improved energy performance of pressure cleaner booster pumps that 
could use variable speed technology to precisely match the head 
requirements of a pressure cleaner system. (Docket No. EERE-2015-BT-
STD-0008, No. 82, Recommendation #8 at pp. 4-5; Docket No. EERE-2015-
BT-STD-0008, No. 101 at pp. 11-20) The DPPP Working Group selected a 
value of 10 gpm based on the typical flow rate that was required or 
recommended for suction-side pressure cleaner apparatus to function. 
(Docket No. EERE-2015-BT-STD-0008, No. 100, CA IOUs, pp. 186-188; 197-
198; Docket No. EERE-2015-BT-STD-0008, No. 101, Various, pp. 14-15, 49-
50, 87-89). Although DOE understands that a system curve that includes 
both static and dynamic friction head would theoretically describe the 
relationship between head and flow for pressure cleaner booster pump 
applications, DOE believes that such a system curve is not necessary or 
representative in this case because: (1) Pressure cleaner booster pumps 
operate at only one load point and (2) the specified flow point and 
head threshold appropriately describe the required operating parameters 
for pressure cleaner booster pump applications. That is, as noted by 
the DPPP Working Group, suction-side pressure cleaner apparatus 
typically recommend a specific flow rate that will enable the equipment 
to operate correctly. DOE acknowledges that a certain amount of 
pressure must be produced by the pressure cleaner booster pump to 
deliver the recommended flow rate. However, once that flow and head 
value are achieved, the pump will operate at only that one load point. 
Therefore, based on DOE's understanding of pressure cleaner booster 
pump applications, DOE is requiring in this final rule that a specific 
flow rate must be achieved regardless of the installation's system 
curve.
    DOE did not receive any other comments related to this proposal. 
Therefore in this final rule, DOE is adopting the proposal that 
pressure cleaner booster pumps to be tested at a single load point of 
10.0 gpm at the minimum speed that results in a head value at or above 
60.0 feet and to weight the measured performance of the pump at that 
load point with a weighting factor of 1.0.
4. Summary
    In summary, DOE adopts, in this final rule, unique load points for 
the different varieties and speed configurations of dedicated-purpose 
pool pumps. DOE's load points (i) and weights (wi) used in determining 
WEF for each pump variety are presented in Table III.6.
    DOE requested comment on the high-speed and low-speed load points 
proposed for all DPPP equipment classes. 81 FR 64580, 64642-64643 
(Sept. 20, 2016). Hayward requested clarification regarding whether all 
of the load points used to determine WEF should be measured on system 
curve C. (Hayward, No. 6 at p. 2) DOE refers Hayward to Table III.6, 
which summarizes the load points for all dedicated-purpose pool pumps 
subject to the test procedure adopted in this final rule. As shown in 
Table III.6, all of the load points for self-priming and non-self-
priming pool filter pumps are specified with respect to curve C. 
However, while many self-priming and non-self-priming pool filter pumps 
models will be evaluated directly on curve C, certain models may have 
their load points measured at head values above curve C, if the load 
point cannot be measured on curve C based on the operating speeds 
available on the pump. In addition, waterfall pumps and pressure 
cleaner booster pumps have load points that are specified with respect 
to unique flow and/or head values and do not reference curve C.

                               Table III.6--Load Points (i) and Weights (wi) for Each DPPP Variety and Speed Configuration
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                              Test points
                                                        --------------------------------------------------------------------------------------
          DPPP varieties                Speed type       Number of                                                                               Weight
                                                           points    Load point (i)      Flow rate (Q)        Head (H)         Speed (n)          (wi)
                                                            (n)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Self-Priming Pool Filter Pumps     Single *............          1  High...........  Qhigh (gpm) =          H = 0.0082 x  Maxspeed...........        1.0
 And Non-Self-Priming Pool Filter                                                    Qmax_speed@C =          Qhigh\2\
 Pumps (with hydraulic hp <=2.5                                                      flow at maximum speed
 hp).                                                                                 on curve C
                                   Two-Speed...........          2  Low............   Qlow (gpm) = Flow     H >= 0.0082   Lowest speed               0.8
                                                                                      rate associated with   x Qlow\2\     capable of meeting
                                                                                      specified head and                   the specified flow
                                                                                      speed that is not                    and head values,
                                                                                      below:                               if any.
                                                                                      31.1 gpm if
                                                                                      pump hydraulic hp at
                                                                                      max speed on curve C
                                                                                      is >0.75 or
                                                                                      24.7 gpm if
                                                                                      pump hydraulic hp at
                                                                                      max speed on curve C
                                                                                      is <=0.75 (a pump
                                                                                      may vary speed to
                                                                                      achieve this load
                                                                                      point)

[[Page 36887]]

 
                                                                    High...........  Qhigh (gpm) =          H = 0.0082 x  Max speed..........        0.2
                                                                                     Qmax_speed@C = flow     Qhigh\2\
                                                                                      at max speed on
                                                                                      curve C
                                   Multi- and Variable-          2  Low............  Qlow(gpm)              H = 0.0082 x  Lowest speed               0.8
                                    Speed.                                            If pump        Qlow\2\       capable of meeting
                                                                                      hydraulic hp at max                  the specified flow
                                                                                      speed on curve C is                  and head values.
                                                                                      >0.75, then Qlow
                                                                                      >=31.1 gpm
                                                                                      If pump
                                                                                      hydraulic hp at max
                                                                                      speed on curve C is
                                                                                      <=0.75, then Qlow
                                                                                      >=24.7 gpm (a pump
                                                                                      may vary speed to
                                                                                      achieve this load
                                                                                      point)
                                                                    High...........  Qhigh (gpm) >=0.8 x    H = 0.0082 x  Lowest speed               0.2
                                                                                      Qmax_speed@C >=80%     Qhigh\2\      capable of meeting
                                                                                      of flow at maximum                   the specified flow
                                                                                      speed on curve C (a                  and head values.
                                                                                      pump may vary speed
                                                                                      to achieve this load
                                                                                      point)
Waterfall Pumps..................  Single..............          1  High...........  Flow corresponding to  17.0 ft       Max speed..........        1.0
                                                                                      specified head (on
                                                                                      max speed pump
                                                                                      curve)
Pressure Cleaner Booster Pumps...  All.................          1  High...........  10.0 gpm (a pump may   >=60.0 ft     Lowest speed               1.0
                                                                                      vary speed to                        capable of meeting
                                                                                      achieve this load                    the specified flow
                                                                                      point)                               and head values,
                                                                                                                           if any.
--------------------------------------------------------------------------------------------------------------------------------------------------------
* As discussed in section III.D.1.e, any pumps that do not meet DOE's definitions of two-speed, multi-speed, or variable-speed pool filter pump, as
  applicable, and, in the case of two-speed self-priming pool filter pumps that are greater than or equal to 0.711 rated hydraulic horsepower and less
  than 2.5 rated hydraulic horsepower and do not meet the requirements to apply the two-speed pool filter pump test method must be tested as a single-
  speed pool filter pump.

E. Determination of Pump Performance

    As part of DOE's test procedure for dedicated-purpose pool pumps, 
DOE is specifying how to measure the performance of the dedicated-
purpose pool pump at the applicable load points consistently and 
unambiguously. Specifically, to determine WEF for applicable dedicated-
purpose pool pumps, the test procedure specifies methods to measure the 
driver input power to the motor or to the DPPP controls (if any) and 
the flow rate at each specified load point, as well as the hydraulic 
output power at maximum speed on system curve C (i.e., the rated 
hydraulic horsepower, see section III.G.1).
    The following section III.E.1 discusses the industry standard DOE 
is incorporating by reference for measuring the performance of 
dedicated-purpose pool pumps. The September 2016 DPPP test procedure 
NOPR proposed several exceptions, modifications, and additions to this 
base test procedure that DOE deemed necessary to ensure accuracy and 
repeatability. These are presented in sections III.E.2.a through 
III.E.2.f. Finally, DOE is adopting specific procedures for calculating 
the WEF from the collected test data and rounding the values to ensure 
that the test results are determined in a consistent manner (section 
III.E.2.g).
1. Incorporation by Reference of HI 40.6-2014
    In the September 2016 DPPP test procedure NOPR, in accordance with 
the DPPP Working Group recommendations (Docket No. EERE-2015-BT-STD-
0008, No. 51, Recommendation #8 at p. 6), DOE proposed to incorporate 
by reference certain sections of HI 40.6-2014 as part of DOE's test 
procedure for measuring the energy consumption of dedicated-purpose 
pool pumps, with the exceptions, modifications, and additions listed in 
III.E.2. DOE stated that HI 40.6-2014 contains the relevant test 
methods needed to accurately characterize the performance of dedicated-
purpose pool pumps, with a few exceptions, modifications, and 
additions. Id. Specifically, HI 40.6-2014 defines and explains how to 
calculate driver power input,\29\ volume per unit time,\30\ pump total 
head,\31\ pump power output,\32\ overall efficiency,\33\ and other 
relevant quantities at the specified load points necessary to determine 
the metric (WEF), and contains appropriate specifications regarding the 
test setup, methodology, standard rating conditions, equipment 
specifications, uncertainty calculations, and tolerances.
---------------------------------------------------------------------------

    \29\ The term ``driver power input'' in HI 40.6-2014 is defined 
as ``the power absorbed by the pump driver'' and is synonymous with 
the term ``driver input power'' and ``input power to the motor and/
or controls,'' as used in this document.
    \30\ The term ``volume per unit time'' in HI 40.6 is defined as 
``the volume rate of flow in any given section'' and is used 
synonymously with ``flow'' and ``flow rate'' in this document.
    \31\ The term ``pump total head'' is defined in HI 40.6-2014 as 
the difference between the outlet total head and the inlet total 
head and is used synonymously with the terms ``total dynamic head'' 
and ``head'' in this document.
    \32\ The term ``pump power output'' in HI 40.6 is defined as 
``the mechanical power transferred to the liquid as it passes 
through the pump, also known as pump hydraulic power.'' It is used 
synonymously with ``hydraulic horsepower'' in this document. 
However, where hydraulic horsepower is used to reference the 
capacity of a dedicated-purpose pool pump, it refers to the rated 
hydraulic horsepower, as defined in section III.G.1.
    \33\ The term ``overall efficiency'' is defined in HI 40.6-2014 
as a ratio of pump power output to driver power input and describes 
the combined efficiency of a pump and driver.
---------------------------------------------------------------------------

    DOE also noted that HI 40.6-2014, with several exceptions, 
modifications, and additions was adopted in the January 2016 general 
pumps test procedure final rule. 81 FR 4086, 4109-4117 (Jan. 25, 2016). 
Therefore, HI 40.6-2014, with certain exceptions, is already 
incorporated by reference into appendix

[[Page 36888]]

A to subpart Y of part 431. 10 CFR 431.463.
    In response to DOE's proposal to incorporate by reference certain 
sections of HI 40.6-2014, CEC expressed its support of DOE's proposal. 
(CEC, No. 7 at p. 2) Conversely, APSP and Hayward suggested that DOE 
consider raising the upper limit of the test fluid required in HI 40.6-
2014 from 86[emsp14][deg]F to 107[emsp14][deg]F to be consistent with 
the requirements for other test standards, including NSF-50 and ENERGY 
STAR. APSP and Hayward added that this would allow for manufacturers to 
establish and maintain one temperature volume of water for NSF, ENERGY 
STAR, and DOE testing, allowing for more efficient use of laboratory 
resources. (APSP, No. 8 at pp. 5-6; Hayward, No. 6 at p. 4)
    In response to APSP and Hayward's suggestion that DOE allow the use 
of warmer temperature water for use in testing dedicated-purpose pool 
pumps, DOE evaluated the impact of using 107[emsp14][deg]F water as 
opposed to water between 50 and 86[emsp14][deg]F on the determined WEF, 
rated hydraulic horsepower, or other metrics. Based on DOE's review, 
testing with water up to 107[emsp14][deg]F would have an insignificant 
impact on the resultant metrics and, therefore, to reduce testing 
burden and allow DOE testing to be streamlined with testing for other 
programs, DOE is adopting requirements for the test fluid that allow 
testing with water up to 107[emsp14][deg]F, as requested by APSP and 
Hayward.
    Similarly, in their comments, APSP and Hayward also requested that 
DOE use a nephelometric turbidity unit (NTU) measurement to determine 
and describe the appropriate test fluid for testing dedicated-purpose 
pool pumps, as opposed to the kinematic viscosity and maximum density 
metrics used in HI 40.6-2014 and proposed by DOE. APSP and Hayward 
requested clarification regarding whether test labs would be required 
to measure the kinematic viscosity and density of the test water and 
whether these parameters would need to be included in test reports and 
data. APSP and Hayward stated that test lab water is not currently 
measured to determine kinematic viscosity and density. APSP and Hayward 
stated that it is not clear what options test labs will have if 
incoming municipal supply water does not meet the proposed requirements 
for kinematic viscosity and density. APSP and Hayward believe that the 
NTU measurement, which is currently referenced in the NSF/ANSI 50-2015 
test and was been used in the DPPP industry for over 20 years, is a 
more convenient and cost effective criteria to use to specify the 
characteristics of the test fluid. (APSP, No.8 at pp. 5-6; Hayward, No. 
6 at pp. 4-5).
    In response to APSP's and Hayward's suggestion regarding the 
characteristics of the test fluid, DOE notes that it reviewed the test 
fluid requirements for NSF/ANSI 50-2015, the ENERGY STAR Test Method 
for Pool Pumps,\34\ and HI 40.6-2014. As discussed in the September 
2016 DPPP test procedure NOPR, section C.3.3, ``Test conditions,'' of 
NSF/ANSI 50-2015 specifies test conditions for both swimming pools and 
hot tubs/spas in terms of temperature and NTU thresholds, as shown in 
Table III.7. That section further states that all pumps, except those 
labeled for swimming pool applications only, are to be tested at the 
hot tub/spa conditions. 81 FR 64580, 64625-64626 (Sept. 20, 2016).
---------------------------------------------------------------------------

    \34\ EPA. 2013. ``ENERGY STAR Program Requirements Product 
Specification for Pool Pumps--Final Test Method.'' Available at: 
https://www.energystar.gov/sites/default/files/specs/Pool%20Pump%20Final%20Test%20Method%2001-15-2013.pdf.

       Table III.7--Test Conditions Specified in NSF/ANSI 50-2015
------------------------------------------------------------------------
           Measurement               Swimming pool        Hot tub/spa
------------------------------------------------------------------------
Water Temperature...............  75  10  102 
                                   [deg]F.             10 [deg]F
Turbidity.......................  <=15 NTU *........  <=15 NTU
------------------------------------------------------------------------
* NTU = Nephelometric Turbidity Units; a measure of how much light is
  scattered by the particles contained in a water sample.

    Section 40.6.5.5, ``Test conditions,'' of HI 40.6-2014, which was 
proposed to be incorporated by reference into the DPPP test procedure 
in the September 2016 DPPP test procedure NOPR, specifies that all 
testing must be conducted with ``clear water'' that is between 50 and 
86[emsp14][deg]F, where clear water means water with a maximum 
kinematic viscosity of 1.6 x 10-5 ft\2\/s and a maximum 
density of 62.4 lb/ft\3\. 81 FR at 64614-64615. The ENERGY STAR Test 
Method for Pool Pumps \35\ does not appear to contain requirements 
regarding the temperature of the test fluid.
---------------------------------------------------------------------------

    \35\ EPA. 2013. ``ENERGY STAR Program Requirements Product 
Specification for Pool Pumps--Final Test Method.'' Available at: 
https://www.energystar.gov/sites/default/files/specs/Pool%20Pump%20Final%20Test%20Method%2001-15-2013.pdf.
---------------------------------------------------------------------------

    In response to APSP's and Hayward's concern regarding the 
availability of ``clear water'' as defined in HI 40.6-2014, DOE notes 
that the characteristics of clear water specified in HI 40.6-2014 are 
meant to be inclusive of any fresh water in the temperature range of 
interest, as well as sea water, and would certainly be available from 
any tap. For reference, the kinematic viscosity of fresh water between 
50 and 107[emsp14][deg]F ranges from 1.4 x 10-5 ft\2\/s to 
0.69 x 10-5 ft\2\/s, respectively, while the kinematic 
viscosity of sea water is approximately 1.24 x 10-5 ft\2\/s 
at 68[emsp14][deg]F.\36\ However, DOE acknowledges that DPPP 
manufacturers may be less familiar with the measurement of kinematic 
viscosity than NTU. As the characterization of the test fluid is not 
expected to greatly affect the resultant WEF score, provided testing is 
done with municipal water within a reasonable temperature range, DOE 
agrees with Hayward that the NTU metric referenced by NSF/ANSI 50-2015 
is also an acceptable criteria to describe water that is reasonably 
free from impurities for the purposes of testing.
---------------------------------------------------------------------------

    \36\ Engineering Toolbox. Liquids--Kinematic Viscosity. Last 
accessed Nov. 15, 2016. Available at: http://www.engineeringtoolbox.com/kinematic-viscosity-d_397.html.
---------------------------------------------------------------------------

    As discussed in the September 2016 DPPP test procedure NOPR, DOE 
noted that the viscosity and density requirements adopted in HI 40.6-
2014 are intended to accomplish the same purpose as the turbidity 
limits in NSF/ANSI 50-2015, to ensure the test is conducted with water 
that does not have contaminants or additives in such concentrations 
that they would affect the thermodynamic properties of the water. 
Therefore, to better align with NSF/ANSI 50-2015 and the existing 
capabilities and experience of DPPP test labs, in this final rule, DOE 
is adopting requirements that testing be carried out with water that is 
between 50 and 107[emsp14][deg]F with less than or equal to 15 NTU, as 
opposed to the ``clear water'' defined in section 40.6.5.5 of HI 40.6-
2014. DOE will also exclude section 40.6.5.5 of HI 40.6-2014 from the 
incorporation by reference into the DOE test procedure, as that section 
will no longer be necessary. As a result, measurements of kinematic 
viscosity and density of the test fluid will not be required, 
minimizing burden on manufacturers. However, measurements of fluid 
temperature and NTU will be required to be made and maintained as part 
of the test records underlying certification to DOE to ensure that the 
test fluid is in accordance with the DOE requirements.
    With regard to DOE's proposal to incorporate by reference appendix 
D of HI 40.6-2014, ``Suitable Time Periods for Calibration of Test 
Instruments,'' APSP and Hayward noted that HI 40.6-2014 does not 
explicitly provide an option for historical data to be used as a basis 
to support a longer recalibration

[[Page 36889]]

interval than recommended by table D.1 of HI 40.6-2014. APSP and 
Hayward stated that this provision used to be available as an option in 
HI 14.6-2011. APSP and Hayward added that it currently calibrates all 
instruments annually, in accordance with ISO 17025,\37\ which would not 
comply with some of the required calibration intervals in HI 40.6-2014, 
such as 0.33 years for pressure transducers. As such, APSP and Hayward 
suggested DOE include a provision to allow for historical data to be 
used to determine longer calibration intervals than currently provided 
for in appendix D of HI 40.6-2014 (APSP, No. 8 at pp. 5-6; Hayward, No. 
6 at p. 5).
---------------------------------------------------------------------------

    \37\ ISO/IEC 17025, ``General requirements for the competence of 
testing and calibration laboratories,'' is an internationally 
recognized standard that contains specifics on testing, calibration 
methods, data quality management systems, and other general 
requirements for test laboratories to carry out testing or 
calibration. See www.iso.org for more information.
---------------------------------------------------------------------------

    In response to APSP's and Hayward's suggestion regarding the 
allowance for extended calibration intervals beyond those specified in 
appendix D of HI 40.6-2014 based on historical data, DOE agrees that 
such a provision used to be available in ANSI/HI 14.6-2011, which 
preceded HI 40.6-2014. DOE understands that it is common practice to 
extend the calibration interval of some equipment that has 
demonstrated, based on past calibration data, to maintain calibration 
over several calibration cycles. DOE also recognizes that this can 
reduce the burden of maintaining equipment within the specifications 
required by the DOE test procedure. As such, DOE believes it is 
reasonable to allow the use of historical test data to justify 
calibration intervals longer than those specified in table D.1 of HI 
40.6-2014 and that such a provision does not compromise the accuracy of 
the resultant test data. However, DOE believes additional specificity 
is required to ensure that unreasonably long time periods between 
calibration intervals are not permitted. Therefore, DOE is adopting 
requirements in this final rule that historical calibration data may be 
used to justify time periods up to three times longer than those 
specified in table D.1 of HI 40.6-2014. In such a case, the supporting 
historical data must show maintenance of calibration of the given 
instrument up to the selected extended calibration interval on at least 
two unique occasions, based on the interval specified in HI 40.6-2014. 
For example, in the case of the pressure transducers discussed by 
Hayward, Hayward may justify a calibration interval up to 1 year \38\ 
(three times the calibration interval of 0.33 years specified in HI 
40.6-2014) based on calibration data taken at least every 0.33 years 
that demonstrates that the calibration has been maintained for 1 year 
for at least two different years.
---------------------------------------------------------------------------

    \38\ While DOE acknowledges that three times 0.33 is 0.99, 0.99 
years can practically be treated as 1 year, as the calibration 
intervals are not precise to the hundredths of a year (3 
days).
---------------------------------------------------------------------------

    China stated, in written comments, its belief that the proposed 
test method did not provide a test method for total head. (China, No. 
14 at p. 3) DOE disagrees and clarifies that, as stated previously, the 
proposed test procedure proposed to incorporate by reference certain 
sections of HI 40.6-2014, which contain relevant specifications 
regarding test setup, methodology, standard rating conditions, 
equipment specifications, uncertainty calculations, and tolerances to 
measure pump total head, among other pump performance metrics.
    DOE did not receive any comments on any of the other sections of HI 
40.6-2014 DOE proposed to incorporate by reference. Therefore, in this 
final rule, DOE incorporates by reference HI 40.6-2014, with certain 
exceptions, modifications, and additions, into the new appendices B and 
C (see section III.H) to subpart Y that will contain the DPPP test 
procedure. DOE notes that DOE is using the nomenclature ``HI 40.6-2014-
B'' in the regulatory text to refer to the incorporation by reference 
of HI 40.6-2014 for the dedicated-purpose pool pumps test procedure in 
appendices B and C and differentiate it from the existing incorporation 
by reference of HI 40.6-2014 to appendix A established in the January 
2016 general pumps test procedure final rule. 81 FR 4086, 4109-4117 
(Jan. 25, 2016).
2. Exceptions, Modifications and Additions to HI 40.6-2014
    In general, DOE finds the test methods contained within HI 40.6-
2014 are sufficiently specific and reasonably designed to produce test 
results necessary to determine the WEF of applicable dedicated-purpose 
pool pumps. However, only certain sections of HI 40.6-2014 are 
applicable to the new DPPP test procedure. In addition, DOE requires a 
few exceptions, modifications, and additions to ensure test results are 
as repeatable and reproducible as possible. DOE's modifications and 
clarifications to HI 40.6-2014 are addressed in the subsequent sections 
III.E.2.a through III.E.2.g.
a. Applicability and Clarification of Certain Sections of HI 40.6-2014
    Although DOE is incorporating by reference HI 40.6-2014 as the 
basis for the DPPP test procedure, DOE noted in the September 2016 DPPP 
test procedure NOPR that some sections of the standard are not 
applicable to the DPPP test procedure and other sections require 
clarification regarding their applicability when conducting the DPPP 
test procedure. 81 FR 64580, 64615-20 (Sept. 20, 2016). Table III.8 
provides an overview of the sections of HI 40.6-2014 that DOE proposed 
to exclude from the DOE test procedure for dedicated-purpose pool 
pumps, as well as those that DOE proposed to only be optional and not 
required for determination of WEF. Id.

 Table III.8--Sections of HI 40.6-2014 DOE Proposed To Exclude From Incorporation by Reference or Make Optional
                                       as Part of the DPPP Test Procedure
----------------------------------------------------------------------------------------------------------------
               Section No.                               Title                           Applicability
----------------------------------------------------------------------------------------------------------------
40.6.4.1................................  Vertically suspended pumps........  Excluded.
40.6.4.2................................  Submersible pumps.................  Excluded.
40.6.5.3................................  Test report.......................  Excluded.
40.6.5.5.1..............................  Test procedure....................  Certain Portions Optional for
                                                                               Representations.
40.6.5.5.2..............................  Speed of rotation during test.....  Excluded.
40.6.6.1................................  Translation of test results to      Excluded.
                                           rated speed of rotation.
40.6.6.2................................  Pump efficiency...................  Optional for Representations.
40.6.6.3................................  Performance curve.................  Optional for Representations.
A.7.....................................  Testing at temperatures exceeding   Excluded.
                                           30 [deg]C (86 [deg]F).
Appendix B..............................  Reporting of test results.........  Excluded.
----------------------------------------------------------------------------------------------------------------


[[Page 36890]]

    In the September 2016 DPPP test procedure NOPR, DOE discussed in 
detail the specific rationale for excluding or making optional certain 
sections of HI 40.6-2014. 81 FR 64580, 64615 (Sept. 20, 2016).
    In response to DOE's proposal to exclude certain sections from the 
incorporation by reference of HI 40.6-2014, while making other sections 
optional for representations, Hayward suggested DOE reconsider the 
exception of section A.7 of HI 40.6-2017, ``Testing at temperatures 
exceeding 30 [deg]C (86 [deg]F),'' in light of their other suggestions 
related to elevated test fluid temperatures discussed in section 
III.E.1. Pentair commented that section 40.6.5.5.2, which requires the 
speed of the pump to be within 80 to 120 percent of the rated speed, 
should remain a stipulation of testing and should not be excluded, 
especially for single- and two-speed induction motor pumps, as NEMA-MG 
requires only better than 7.5 percent of the regulated speed. (Pentair, 
No. 11 at p. 3) China also commented that the proposed test procedure 
did not define a test method for rotating speed and, similarly, 
suggested maintaining speed between 80 and 110 percent of rated 
rotating speed. (China, No. 14 at p. 3)
    In response to Hayward's comment regarding the proposed exclusion 
of section A.7 of HI 40.6-2014, as discussed in section III.E.1, DOE is 
adopting alternative criteria to describe the test fluid in lieu of the 
criteria specified in HI 40.6-2014. Therefore, a specific accommodation 
to test at higher temperatures, as specified in appendix A.7 of HI 
40.6-2014, is not required. In addition, DOE notes that the 
instructions in section A.7 are not currently very descriptive and 
could introduce ambiguity to the test. As such, DOE excludes section 
A.7 of HI 40.6-2014 from incorporation by reference in this final rule.
    In response to Pentair and China's comments regarding the 
measurement of and tolerances related to rotational speed, DOE 
clarifies that the adopted test procedure references specific load 
points for different varieties and speed configurations of dedicated-
purpose pool pumps, as described in section III.D. These load points 
were specifically recommended by the DPPP Working Group and include 
specifications regarding the flow, head, and speed at each load point. 
For example, single-speed pool filter pumps must be evaluated on curve 
C at the maximum speed, which is typically the only speed 
available.\39\ Two-speed pool filter pumps must be evaluated at the 
maximum and low speed, which are, by definition, the only speeds 
available on the pump. The load points for multi-speed and variable-
speed pool filter pumps do not specify speed values, but are described 
with respect to specific head and flow requirements. In all cases, 
tolerances around a given speed value are not relevant since there is 
no ``target'' speed value that must be attained. Instead, DOE describes 
tolerances around the tested flow or head values that must be achieved, 
as those values have specified values or thresholds that must be 
achieved and drive the specification of the load point. While the speed 
is integral to attaining a given load point, the tested speed is a 
dependent variable to satisfy the required head and flow values based 
on the capabilities of the pump. Therefore, DOE does not believe that 
allowing measurements at alternative speeds, either those specified in 
section 40.6.5.5.2 or NEMA MG-1-2016, is necessary or relevant to the 
DPPP test procedure. In addition, DOE understands the primary purpose 
of section 40.6.5.5.2 is to accommodate testing of very large pumps 
that may overload the power supply of the test lab when run at full 
speed. DOE does not believe this is a concern for dedicated-purpose 
pool pumps, most of which are less than 2.5 rated hydraulic horsepower. 
Therefore, this final rule does not incorporate by reference section 
40.6.5.5.2, and requires all testing to be conducted at the appropriate 
load points specified in section III.D for each DPPP variety and speed 
configuration. Regarding measurement of speed, DOE notes that HI 40.6-
2014, which is incorporated by reference in the adopted test procedure, 
includes specifications for measuring rotating speed.
---------------------------------------------------------------------------

    \39\ As described in more detail in section III.D.1.e, if a 
dedicated-purpose pool pump does not meet the definition of a two-
speed, multi-speed, or variable-speed dedicated-purpose pool pump 
discussed in section III.B.7, or the necessary criteria to apply the 
two-speed test method discussed in section III.D.1.e, such a pump 
must be tested using the single-speed pool filter pump test point, 
regardless of the number of operating speeds the pump may have.
---------------------------------------------------------------------------

    DOE did not receive any other comments pertaining to the other 
sections DOE proposed to exclude from DOE's incorporation by reference. 
Therefore, in this final rule, DOE is not incorporating by reference 
section 40.6.4.1, 40.6.4.2, 40.6.5.3, 40.6.5.5.2, 40.6.6.1, section A.7 
of appendix A, and appendix B of HI 40.6-2014 as part of the DOE test 
procedure for dedicated-purpose pool pumps. In addition, as discussed 
in section III.E.1, as DOE is adopting alternative criteria to describe 
the test fluid. For that reason, DOE is also excluding section 40.6.5.5 
from the incorporation by reference of HI 40.6-2014. To allow 
manufacturers to make voluntary representations of other metrics, in 
addition to WEF, DOE incorporates by reference section 40.6.5.5.1, 
section 40.6.6.2, and section 40.6.6.3, of HI 40.6-2014 and clarifies 
that these sections are not required for determination of WEF, but may 
be optionally conducted to determine and make representations about 
other DPPP performance parameters.
b. Calculation of Hydraulic Horsepower
    In addition to the clarifications regarding the applicability of 
certain sections of HI 40.6-2014 to the DPPP test procedure, DOE 
believes that clarification is also required regarding the calculation 
of hydraulic horsepower. As discussed in the September 2016 DPPP test 
procedure NOPR, DOE proposed that hydraulic horsepower must be 
calculated with a unit conversion factor of 3956, instead of 3960, 
which is specified in HI 40.6-2014. 81 FR 64580, 64617 (Sept. 20, 
2016). DOE explained that using a value of 3956 is more accurate and 
precise given the properties of the specified test fluid. Also, as 
noted, in the September 2016 DPPP test procedure NOPR, the conversion 
factor of 3956 was adopted also in the January 2016 general pumps test 
procedure final rule. 81 FR 4086, 4109 (Jan. 25, 2016).
    In response to DOE's proposal, during the September 2016 DPPP test 
procedure NOPR public meeting, Hayward sought clarification from DOE, 
as it believed that the value referred to the rotating speed of the 
pump. Hayward questioned whether this was the same value used during 
the DPPP Working Group meetings. (Hayward, Public Meeting Transcript, 
No. 3 at pp. 62-63) In response, during the September 2016 DPPP test 
procedure NOPR public meeting, Pentair clarified that the value was a 
unit conversion (Pentair, Public Meeting Transcript, No. 3 at pp. 62-
63) and DOE clarified that the value of 3956 (as proposed in the 
September 2016 DPPP test procedure NOPR) was the one used throughout 
the DPPP Working Group meetings. APSP and Hayward later suggested, in 
their written comments, that the DPPP test procedure continue to rely 
on the 3960 value historically used in all hydraulic power 
calculations. (APSP, No. 8 at p. 6)
    While DOE believes that the value of 3956 proposed in the September 
2016

[[Page 36891]]

DPPP test procedure NOPR is more precise and accurate given the 
specific gravity of 1.0 assumed in the calculation of hydraulic power, 
the value of the unit conversion (3956 or 3960) does not meaningfully 
impact the resultant rated hydraulic horsepower within the number of 
number of digits to which rated hydraulic horsepower is to be reported. 
Therefore, in this final rule, DOE adopts a requirement that hydraulic 
horsepower must be calculated with a unit conversion factor of 3960, 
consistent with Hayward's request.
c. Data Collection and Determination of Stabilization
    The DPPP test procedure must provide instructions regarding how to 
sample and collect data at each load point. Such instructions must 
ensure that the collected data are taken at stabilized conditions that 
accurately and precisely represent the performance of the dedicated-
purpose pool pump at the designated load points, thus improving 
repeatability of the test.
    In the September 2016 DPPP test procedure NOPR, DOE explained that 
section 40.6.5.5.1 of HI 40.6-2014 provides that all measurements shall 
be made under steady state conditions. DOE stated that the requirements 
for determining when the pump is operating under steady state 
conditions in HI 40.6-2014 were described as follows: (1) There is no 
vortexing, (2) the margins are as specified in ANSI/HI 9.6.1, 
``Rotodynamic Pumps Guideline for NPSH Margin,'' and (3) the mean value 
of all measured quantities required for the test data point remains 
constant within the permissible amplitudes of fluctuations defined in 
Table 40.6.3.2.2 of HI 40.6-2014 over a minimum period of 10 seconds 
before performance data are collected. 81 FR 64580, 64617 (Sept. 20, 
2016).
    In addition to the requirements specified in section 40.6.5.5.1 of 
HI 40.6-2014, in the September 2016 DPPP test procedure NOPR, DOE 
proposed requirements that at least two unique measurements must be 
used to determine stabilization when testing pumps according to the 
DPPP test procedure. 81 FR 64580, 64617 (Sept. 20, 2016). DOE explained 
within the September 2016 test procedure NOPR, that HI 40.6-2014 does 
not specify the measurement interval for determination of steady state 
operation. Id. DOE's proposal of two measurements is the same as the 
requirement established in the January 2016 general pumps test 
procedure final rule. 81 FR 4086, 4011 (Jan. 25, 2016). This 
requirement accommodates a longer period between the sampling of 
individual data points, as compared to the ENERGY STAR program. 81 FR 
64580, 64617 (Sept. 20, 2016).
    Section 40.6.3.2.2 of HI 40.6-2014, ``Permissible fluctuations,'' 
specifies that permissible damping devices may be used to minimize 
noise and large fluctuations in the data in order to achieve the 
specifications noted in Table 40.6.3.2.2 of HI 40.6-2014. In the 
September 2016 DPPP test procedure NOPR, similar to the January 2016 
general pumps test procedure final rule (81 FR 4086, 4011 (Jan. 25, 
2016)), DOE proposed that damping devices are only permitted to 
integrate up to the measurement interval to ensure that each 
stabilization data point is reflective of a separate measurement. 81 FR 
64580, 64617 (Sept. 20, 2016). DOE also proposed in the September 2016 
DPPP test procedure NOPR that, for physical dampening devices, the 
pressure indicator/signal must register 99 percent of a sudden change 
in pressure over the measurement interval to satisfy the requirement 
for unique measurements. This requirement is consistent with annex D of 
ISO 3966:2008(E), ``Measurement of fluid flow in closed conduits--
Velocity area method using Pitot static tubes,'' which is referenced in 
HI 40.6-2014 for measuring flow with pitot tubes. 81 FR 64580, 64617 
(Sept. 20, 2016).
    In response to DOE's proposed stabilization requirements, 
particularly those incorporated by reference in section 40.6.5.5.1 of 
HI 40.6-2014, APSP and Hayward requested clarification of the 
definition of ``vortexing'' and an explanation of how to specifically 
determine if vortices are, or are not present. (APSP, No. 8 at pp.6-7; 
Hayward, No. 6 at p. 6) In response, DOE acknowledges that DOE did not 
propose a definition for ``vortexing'' or ``vortices,'' and such 
definitions are not contained in HI 40.6-2014. After reviewing the 
context of section 40.6.5.5.1 of HI 40.6-2014, DOE concludes that the 
language of ``no vortexing'' is a redundant, but informative statement, 
related to defining steady state conditions. In other words, vortexing 
is a specific scenario, which would cause test readings to fluctuate 
beyond the permissible amplitudes of fluctuations defined in Table 
40.6.3.2.2 of HI 40.6-2014 over a minimum period of 10 seconds before 
performance data are collected. Accordingly, DOE will not establish any 
further definitions or verification procedures related to vortexing or 
vortices. Under section 40.6.5.5.1 of HI 40.6-2014, as incorporated by 
reference into the test procedure, steady state is achieved when the 
mean value of all measured quantities required for the test data point 
remain constant within the permissible amplitudes of fluctuations 
defined in Table 40.6.3.2.2 over a minimum time of 10 seconds before 
data are collected. No explicit measurement or determination of 
vortexing or vortices is required.
    DOE did not receive any additional comments on this proposal and, 
therefore, is adopting, in this final rule, the proposal that 
determination of stabilization must be made based on at least two 
unique measurements and any damping devices are only permitted to 
integrate up to the data collection interval.
d. Test Tolerances
    As discussed in section III.D, DOE proposed in the September 2016 
DPPP test procedure NOPR to specify unique load points for each DPPP 
variety and speed configuration. As DOE noted in the September 2016 
DPPP test procedure NOPR, HI 40.6-2014 does not specify how close a 
measured data point must be to the specified load point or if that data 
point must be corrected in any way for deviations from the specified 
value. 81 FR 64580, 64617-18 (Sept. 20, 2016).
    In the September 2016 DPPP test procedure NOPR, consistent with the 
tolerances adopted in the ENERGY STAR test procedure, DOE proposed 
tolerances of 2.5 percent on flow rate for self-priming and 
non-self-priming pool filter pumps and pressure cleaner booster pumps. 
However, due to the fact that the load point for waterfall pumps is 
specified as a fixed head value, DOE proposed a tolerance of 2.5 percent of head for waterfall pumps. DOE did not propose a 
tolerance on the tested speed, as the tested maximum speeds are 
specific to each dedicated-purpose pool pump being tested. 81 FR 64580, 
64617-18 (Sept. 20, 2016).
    In response to DOE's proposal, APSP and Hayward commented that 
maintaining 2.5 percent of the specified flow rate or head 
value will be difficult to achieve, particularly with regards to the 10 
gpm load point for pressure cleaner booster pumps. APSP and Hayward 
requested any exemplary data that demonstrates stabilization can be 
maintained within the specified tolerance at low head or flows and that 
DOE consider a larger tolerance for low flow or head measurements 
(APSP, No. 8 at p. 7; Hayward, No. 6 at p. 6).
    In response to APSP's and Hayward's request for larger tolerances 
on low flow and head values, DOE reiterates that DOE based the proposal 
in the

[[Page 36892]]

September 2016 DPPP test procedure NOPR on the existing tolerance 
requirements in the ENERGY STAR Test Method for Pool Pumps.\40\ The 
ENERGY STAR method applies to all load points specified by the test 
method, including the minimum speed test point for variable-speed 
dedicated-purpose pool pumps. DOE also notes that the flow rates on 
Curves A, B, and C at minimum flow rate for many variable-speed 
dedicated-purpose pool pumps are at or below 10 gpm, as demonstrated in 
DOE's Self-Priming Pool Filter Pump Performance Database. (Docket No. 
EERE-2015-BT-STD-0008, No. 102) Specifically, 43 of the 83 total 
variable-speed self-priming pool filter pumps in DOE's database report 
flow rates less than or equal to 10 gpm and at least 19 of those 43 
models are from the ENERGY STAR database.\41\ Based on the fact that 
such requirements can be met to certify pumps in accordance with ENERGY 
STAR, DOE believes that such a requirement can be met when conducting 
the DOE DPPP test procedure. Although the pumps in the ENERGY STAR 
database should be conforming to the flow and head tolerances, DOE does 
not have access to source data to confirm this. Therefore, in light of 
Hayward's comment, in this final rule, DOE is adopting a broader 
tolerance requirement for lower flow scenarios. Specificity, the flow 
tolerance will be 2.5 percent of the specified flow rate or 
0.5 gpm, whichever is greater. DOE believes that a range of 
1.0 gpm can reasonably be maintained with typical lab testing 
equipment. DOE notes that such an accommodation is not necessary for 
waterfall pumps, since the tolerance is a fixed 17.0  0.425 
feet.
---------------------------------------------------------------------------

    \40\ EPA. 2013. ``ENERGY STAR Program Requirements Product 
Specification for Pool Pumps--Final Test Method.'' Available at: 
https://www.energystar.gov/sites/default/files/specs/Pool%20Pump%20Final%20Test%20Method%2001-15-2013.pdf.
    \41\ ENERGY STAR maintains a database of certified products, 
including pool pumps. See https://www.energystar.gov/productfinder/product/certified-pool-pumps/results.
---------------------------------------------------------------------------

    In addition, based on the revised load points for multi-speed and 
variable-speed pool filter pumps presented in section III.D.1.c, DOE 
notes that the multi-speed and variable-speed pool filter pump load 
points are now specified with respect to the head value (i.e., H = 
0.0082 x Q\2\), while the flow point may vary based on the operating 
speeds available on the pump. Therefore, in this final rule, DOE is 
revising the tolerances for the multi-speed and variable-speed pool 
filter pump test points to be achieved within 2.5 percent 
of the specified head value, which is curve C. DOE is adopting all 
other tolerances as proposed in the September 2016 DPPP test procedure 
NOPR.
e. Power Supply Characteristics
    In the September 2016 DPPP test procedure NOPR and consistent with 
the January 2016 general pumps test procedure final rule (81 FR 4086, 
4112-4115 (Jan. 25, 2016)), DOE proposed tolerances for voltage, 
frequency, voltage unbalance, and total harmonic distortion that must 
be maintained at the input terminals to the motor and/or control, as 
applicable, when conducting the DPPP test procedure. 81 FR 64580, 
64618-19 (Sept. 20, 2016). DOE discussed how the measurement of input 
power to the driver is an important element of the test, because input 
power is a key component of WEF. In addition, in the September 2016 
DPPP test procedure NOPR, DOE discussed how large differences in 
voltage, frequency, voltage unbalance, or total harmonic distortion can 
affect the performance of the motor and/or control under test. Id.
    DOE believes that, because dedicated-purpose pool pumps utilize 
electrical equipment (i.e., motors and drives) similar to that used by 
general pumps, such requirements also apply when testing dedicated-
purpose pool pumps. In the September 2016 DPPP test procedure NOPR, DOE 
proposed that when testing dedicated-purpose pool pumps the following 
conditions would apply to the main power supplied to the motor or 
controls, if any:
     Voltage maintained within 5 percent of the 
rated value of the motor.
     Frequency maintained within 1 percent of the 
rated value of the motor.
     Voltage unbalance of the power supply maintained within 
3 percent of the rated value of the motor.
     Total harmonic distortion maintained at or below 12 
percent throughout the test. 81 FR 64580, 64619 (Sept. 20, 2016).
    APSP and Hayward submitted comments regarding voltage unbalance of 
the power supply. APSP and Hayward were familiar with a voltage 
unbalance in a three-phase power supply, but were unclear about how it 
applied to a single-phase power supply. (APSP, No. 8 at p.7; Hayward, 
No. 4 at p.1; Hayward, No. 6 at pp. 6-7) In response, voltage unbalance 
or imbalance is defined as the largest difference between the average 
RMS voltage and the RMS value of any single voltage phase divided by 
the average RMS voltage, usually expressed as a percentage.\42\ Voltage 
unbalance is a function of multiple phase power supplies and, by 
definition, does not exist in single-phase power supplies. As there is 
no voltage unbalance in a single-phase power supply, the requirement to 
maintain voltage unbalance within 3 percent of the rated 
value of the motor only applies to pumps with motors driven by a three-
phase power supply.
---------------------------------------------------------------------------

    \42\ An overview by DOE on voltage unbalance can be found at: 
http://energy.gov/sites/prod/files/2014/04/f15/eliminate_voltage_unbalanced_motor_systemts7.pdf.
---------------------------------------------------------------------------

    APSP and Hayward also requested that DOE confirm that the voltage 
unbalance specification of ``3 percent of the rated value 
of the motor'' applies to the rated voltage of the motor. (APSP, No. 8 
at p. 7; Hayward, No. 6 at pp. 6-7) In response, DOE agrees that the 
proposal in the September DPPP 2016 test procedure NOPR could be 
clarified. DOE understands that motors typically do not have nominal 
rated voltage unbalance values, similar to the nominal rated frequency 
and voltage values listed on many motor nameplates. In this case 
``3 percent of the rated value of the motor'' refers to 
``the value at which the motor was rated.'' That is, the value is 
referring to the voltage unbalance associated with the rated efficiency 
of the motor. DOE also notes that, in IEEE Standard 112-2004, ``IEEE 
Standard Test Procedure for Polyphase Induction Motors and 
Generators,'' (IEEE 112-2004) and the Canadian Standards Association 
(CSA) C390-10, ``Test methods, marking requirements, and energy 
efficiency levels for three-phase induction motors,'' (CSA C390-10), 
which are the test methods incorporated by reference as the DOE test 
procedure for electric motors, a voltage unbalance of <=0.5 percent is 
required. Therefore, the requirement of ``3 percent of the 
value at which the motor was rated'' can also be interpreted as <=3.5 
percent for motors rated in accordance with DOE's electric motor test 
procedure. In this final rule, DOE will specify the voltage unbalance 
requirement as ``3 percent of value with which the motor 
was rated.''
    During the September 2016 DPPP test procedure NOPR public meeting, 
CA IOUs, DOE, and Hayward discussed total harmonic distortion (THD). 
Hayward inquired about differences related to tolerances between the 
September 2016 DPPP test procedure NOPR and ENERGY STAR and 
specifically sought indication of whether the tolerances in DOE's 
proposal were more stringent than ENERGY STAR. (Hayward, Public

[[Page 36893]]

Meeting Transcript, No. 3 at p. 58) DOE responded during the September 
2016 DPPP test procedure NOPR public meeting that ENERGY STAR requires 
THD to be less than 2 percent and DOE's proposal was less than 12 
percent. (DOE, Public Meeting Transcript, No. 3 at p. 59) CA IOUs noted 
that ENERGY STAR's THD requirements were much more stringent than the 
proposed DOE requirements and raised questions if current test labs can 
comply with this value. (CA IOUs, Public Meeting Transcript, No. 3 at 
pp. 59-60) Hayward responded that upon initial review, if a 
manufacturer is already conducting ENERGY STAR testing in-house, that 
the DOE proposal does not seem more stringent, nor did Hayward believe 
that the DOE proposal would require any more elaborate equipment. 
(Hayward, Public Meeting Transcript, No. 3 at p. 60) CA IOUs responded 
that a different THD value might be necessary in that the DOE's 
proposal of 12 percent seems unreasonably high, but ENERGY STAR's 
requirement of 2 percent seems unreasonably low. (CA IOUs, Public 
Meeting Transcript, No. 3 at p. 60)
    Regarding Hayward's inquiry as to the relative stringency of DOE's 
proposed power supply characteristics as compared to the ENERGY STAR 
\43\ test procedure for pool pumps,\44\ DOE notes that all of DOE's 
proposed power supply characteristic requirements are equivalent to or 
less stringent than the existing ENERGY STAR requirements, as shown in 
Table III.9.
---------------------------------------------------------------------------

    \43\ ENERGY STAR is a joint program of the U.S. Environmental 
Protection Agency (EPA) and DOE that establishes a voluntary rating, 
certification, and labeling program for highly energy efficient 
consumer products and commercial equipment. Information on the 
program is available at www.energystar.gov/index.cfm?c=home.index.
    \44\ EPA. 2013. ``ENERGY STAR Program Requirements Product 
Specification for Pool Pumps--Final Test Method. Rev. Jan-2013'' 
https://www.energystar.gov/sites/default/files/specs/Pool%20Pump%20Final%20Test%20Method%2001-15-2013.pdf.

 Table III.9--Comparison of Power Supply Characteristics Requirements Proposed in DOE's September 2016 DPPP Test
                      Procedure NOPR and in the ENERGY STAR Test Method for Pool Pumps \45\
----------------------------------------------------------------------------------------------------------------
                                             DOE September 2016 DPPP test
       Power supply characteristic             procedure  NOPR proposal                   ENERGY STAR
----------------------------------------------------------------------------------------------------------------
Voltage.................................  within 5 percent of     within 1.0 percent of
                                           the rated value of the motor.       the rated value of the motor.
Frequency...............................  within 5 percent of     within 1.0 percent of
                                           the rated value of the motor.       the rated value of the motor.
Voltage Unbalance.......................  within 3 percent of     N/A.
                                           the rated value of the motor.
Total Harmonic Distortion...............  <=12 percent......................  <=2.0 percent.
----------------------------------------------------------------------------------------------------------------

    With regard to CA IOUs comment regarding DOE's proposed tolerance 
on THD perhaps being too large, DOE notes that the THD tolerance of 12 
percent was developed based on reasonable limits that motor systems 
should be designed to handle. Further, a THD tolerance of 12 percent is 
widely available on the national electrical grid and, therefore, is not 
unduly burdensome to attain during testing. DOE discussed this 
justification, at length, in the January 2016 general pumps test 
procedure final rule. 81 FR 4086, 4112-4118 (Jan. 25, 2016) For 
example, regarding limitations on harmonic distortion on the power 
supply, the AMO publication, ``Improving Motor and Drive System 
Performance'' (AMO motor sourcebook) states that electrical equipment 
is often rated to handle 5 percent THD (as defined in IEEE 519-2014 
\46\), and notes that motors are typically much less sensitive to 
harmonics than computers or communication systems.\47\ In addition, 
section 5.1 of IEEE 519-2014 recommends line-to-neutral harmonic 
voltage limits of 5.0 percent individual harmonic distortion and 8.0 
percent voltage THD for weekly 95th percentile short time (10 min) 
values, measured to the 50th harmonic. The IEEE standard also indicates 
that daily 99th percentile very short time (3 second) values should be 
less than 1.5 times these values.
---------------------------------------------------------------------------

    \45\ EPA. 2013. ``ENERGY STAR Program Requirements Product 
Specification for Pool Pumps--Final Test Method. Rev. Jan-2013'' 
https://www.energystar.gov/sites/default/files/specs/Pool%20Pump%20Final%20Test%20Method%2001-15-2013.pdf.
    \46\ IEEE. 2014. Standard 519: ``IEEE Recommended Practice and 
Requirements for Harmonic Control in Electric Power Systems.'' 
Available at: https://standards.ieee.org/findstds/standard/519-2014.html.
    \47\ DOE EERE. Improving Motor and Drive System Performance--A 
Sourcebook for Industry. February 2014. Available at www.energy.gov/eere/amo/motor-systems.
---------------------------------------------------------------------------

    Hayward also submitted written comments stating that DOE's proposed 
voltage, frequency, voltage unbalance, and THD requirements are 
suitable for testing dedicated-purpose pool pumps and were reasonably 
achievable in existing laboratory environments. (Hayward, No. 6 at p. 
7) Additionally, Hayward submitted written comments that the proposed 
power supply requirements in the September 2016 DPPP test procedure 
NOPR are in alignment with (or not as stringent as) the power supply 
requirements for other pool pump industry programs including ENERGY 
STAR, NSF, and UL. (Hayward, No. 6 at p. 7) Similarly, APSP stated that 
DOE's proposed power supply requirements were less stringent than the 
requirements used in DOE motor efficiency testing. (APSP, No. 8 at p. 
7) Both APSP and Hayward felt that existing equipment would be more 
than capable of meeting the proposed requirements. (APSP, No. 8 at p. 
7; Hayward, No. 6 at p. 7). Ultimately, for the reasons discussed in 
this section, DOE adopts requirements in this final rule that when 
testing dedicated-purpose pool pumps the main power supplied to the 
motor or controls, if any, must maintain voltage within 5 
percent of the rated value of the motor, frequency within 1 
percent of the rated value of the motor, voltage unbalance of the power 
supply maintained within 3 percent of the value with which 
the motor was rated, and total harmonic distortion maintained at or 
below 12 percent throughout the test.
f. Measurement Equipment for Testing
    Appendix C of HI 40.6-2014, which DOE is incorporating by reference 
into the DPPP test procedure, specifies the required instrumentation to 
measure head, speed, flow rate, torque, temperature, and electrical 
input power to the motor. In the September 2016 DPPP test procedure 
NOPR, DOE proposes to refer to appendix C of HI 40.6-2014, as 
incorporated by reference (see section III.E.1), to specify the 
required instrumentation to measure head, speed, flow rate, and 
temperature in the DPPP test procedure. 81 FR 64580, 64619-64620 (Sept. 
20, 2016). However, DOE noted that for the purposes of measuring input 
power to the motor or control, as applicable, of DPPP models, the 
equipment specified in section C.4.3.1, ``electric power input to the 
motor,'' of HI 40.6-2014 may not be sufficient. Instead, DOE proposed 
requirements that electrical measurements for determining pump

[[Page 36894]]

power input be taken using equipment capable of measuring current, 
voltage, and real power up to at least the 40th harmonic of fundamental 
supply source frequency \48\ and have an accuracy level of 2.0 percent of the measured value when measured at the 
fundamental supply source frequency when rating pumps using the 
testing-based methods or with a calibrated motor. Id. These proposed 
requirements are consistent with other relevant industry standards \49\ 
for measurement of input power to motor and drive systems and the 
January 2016 general pumps test procedure final rule. 81 FR 4086, 4118-
19 (Jan. 25, 2016) DOE notes that the September 2016 DPPP test 
procedure NOPR contained inconsistent statements with regard to whether 
the accuracy requirement was with respect to full scale or the measured 
value. Specifically, the preamble (81 FR 64619-64620) discussed the 
accuracy requirement with respect to full scale, while the proposed 
regulatory text discussed accuracy requirements with respect to the 
measured value (81 FR 64650). The proposed regulatory text contained 
the correct proposal, which is that electrical measurement equipment 
must be accurate to 2.0 percent of the measured value. DOE 
notes that this is consistent with the requirements adopted in the 
January 2016 general pumps test procedure final rule and is less 
stringent than the requirements contained in the ENERGY STAR Test 
Method for Pool Pumps,\50\ which requires accuracy of 1.5 percent of 
the measured value for power measurement.
---------------------------------------------------------------------------

    \48\ CSA C838-13 requires measurement up to the 50th harmonic. 
However, DOE believes that measurement up to the 40th harmonic is 
sufficient, and the difference between the two types of frequency 
measurement equipment will not be appreciable.
    \49\ Specifically, DOE identified AHRI 1210-2011, ``2011 
Standard for Performance Rating of Variable Frequency Drives''; the 
2013 version of CSA Standard C838, ``Energy efficiency test methods 
for three-phase variable frequency drive systems''; CSA C390-10, 
``Test methods, marking requirements, and energy efficiency levels 
for three-phase induction motors''; and IEC 61000-4-7, ``Testing and 
measurement techniques--General guide on harmonics and 
interharmonics measurements and instrumentation, for power supply 
systems and equipment connected thereto'' as relevant to the 
measurement of input power to the motor or control.
    \50\ EPA. 2013. ``ENERGY STAR Program Requirements Product 
Specification for Pool Pumps--Final Test Method.'' Available at: 
https://www.energystar.gov/sites/default/files/specs/Pool%20Pump%20Final%20Test%20Method%2001-15-2013.pdf.
---------------------------------------------------------------------------

    In response to DOE's proposal, Hayward commented that the 
manufacturer of the power analyzer within Hayward's lab met the level 
of accuracy proposed in the September 2016 DPPP test procedure NOPR. 
(Hayward, No. 6 at p. 11) APSP also commented that currently existing 
motor test data acquisition equipment is adequate to meet the tolerance 
limits proposed by DOE. (APSP, No. 8 at p. 7)
    Therefore, for the reasons discussed in this section, DOE adopts 
that electrical measurement equipment must be capable of measuring 
current, voltage, and real power up to at least the 40th harmonic of 
fundamental supply source frequency and having an accuracy level of 
2.0 percent of the measured value when measured at the 
fundamental supply source frequency.
    DOE also noted in the September 2016 DPPP test procedure NOPR that 
HI 40.6-2014 does not contain any requirements for the instruments used 
for measuring distance. Distance must be measured when determining the 
self-priming capability of self-priming and non-self-priming pool 
filter pumps (see section III.G.2). 81 FR 64580, 64620 (Sept. 20, 
2016). As such, DOE proposed in the September 2016 DPPP test procedure 
NOPR to require instruments for measuring distance that are accurate to 
and have a resolution of at least 0.1 inch to improve 
consistency and repeatability of test results. Id. DOE noted that, 
although this accuracy requirement is generally applicable, when used 
in combination with other instruments to measure head, both the 
accuracy requirements of distance-measuring instruments and the 
specified accuracies for measurement of differential, suction, and 
discharge head apply. Id.
    DOE received no comments related to this proposal. Therefore, in 
this final rule, DOE requires instruments for measuring distance that 
are accurate to and have a resolution of at least 0.1 inch.
g. Calculation and Rounding Modifications and Additions
    DOE notes HI 40.6-2014 does not specify how to round values for 
calculation and reporting purposes. DOE recognizes that the manner in 
which values are rounded can affect the resulting WEF, and all WEF 
values should be reported with the same precision. Therefore, to 
improve the accuracy and consistency of calculations, DOE proposed in 
the September 2016 DPPP test procedure NOPR that raw measured data be 
used to calculate WEF and the resultant value be rounded to the nearest 
0.1. 81 FR 64580, 64620 (Sept. 20, 2016). Similarly, DOE proposed that 
all values of EF, maximum head, vertical lift, and true priming time be 
reported to the tenths place and all other values be reported to the 
hundredths place. 81 FR 64580, 64650 (Sept. 20, 2016).
    DOE received no comments related to this proposal. However, DOE 
notes that the June 2016 DPPP Working Group Recommendations and January 
2017 DPPP DFR specify separate standards for self-priming pool filter 
pumps with rated hydraulic horsepower greater than or equal to 0.711 hp 
and less than 0.711 hp. (Docket No. EERE-2015-BT-STD-0008, No. 82, 
Recommendation #1 at pp. 1-2; 86 FR 5650, 5743). As such, DOE notes 
that rated hydraulic horsepower must be reported to the thousandths 
place, consistent with the precision desired by the DPPP Working Group 
in their equipment class specifications. Therefore, in this final rule, 
DOE adopts that all calculations shall be performed with raw measured 
data; that WEF, EF, maximum head, vertical lift, and true priming time 
be rounded to the nearest tenths place; that rated hydraulic horsepower 
be reported to the nearest thousandths place; and all other values be 
rounded to the hundredths place.

F. Representations of Test Metrics

    In the September 2016 DPPP test procedure NOPR, DOE stated that 
manufacturers of equipment that are addressed by the proposed test 
procedure would have 180 days after the publication of the test 
procedure final rule to begin using the DOE procedure as the basis for 
representations. However, DOE clarified that manufacturers would not be 
required to certify or otherwise make representations regarding the 
performance of applicable dedicated-purpose pool pumps using the WEF 
metric until the compliance date of any potential energy conservation 
standards that DOE might set for dedicated-purpose pool pumps. However, 
if manufacturers elect to make representations of WEF prior to such 
compliance date, they will be required to do so using the DOE test 
procedure. 81 FR 64580, 64627-28 (Sept. 20, 2016).
    In the September 2016 DPPP test procedure NOPR, DOE also discussed 
how other metrics that are outcomes of the DPPP test procedure would 
also need to be updated to be consistent with the final DPPP test 
procedure 180 days after publication of the final rule in the Federal 
Register. Specifically, DOE also proposed establishing standardized and 
consistent methods for determining several DPPP metrics, including DPPP 
horsepower metrics, EF, pump efficiency, overall efficiency, driver 
power input, pump power output, and power factor. One hundred and 
eighty (180) days after the publication of this final rule any 
representations of those

[[Page 36895]]

metrics would also be required to be based on values consistent with 
the DOE test procedure. DOE notes that some of these test methods and 
representations were proposed as optional to allow manufacturers to 
make such representations if they chose to. Id.
    DOE received many comments related to the representation of 
efficiency metrics, including use of alternative metrics, the 
definition of a representation, the impact on voluntary programs, and 
the timing required to transition to the new test procedure. These 
comments and DOE's responses are discussed in the following sections 
III.F.1, III.F.2, III.F.3, and III.F.4.
1. Representations of Primary Efficiency Metrics
    As discussed in section III.C, DOE is adopting the WEF as the 
regulatory metric for defining the energy efficiency of dedicated-
purpose pool pumps. Typically, DOE only includes in the test procedure 
the DOE metric (the metric used for the energy conservation standards), 
and EPCA requires manufacturers to switch over to use of the DOE metric 
for representations beginning 180 days of publication of the test 
procedure final rule. This helps ensure standardization of efficiency 
representations throughout the industry and eliminates potential 
confusion in the market place if multiple non-equivalent metrics are 
used to describe the same piece of equipment. DOE believes that 
requiring use of the single, standardized DOE metric determined through 
a public notice and comment process is the most appropriate approach. A 
single, standardized metric that provides a comprehensive picture of 
the equipment's energy performance will provide a clear and consistent 
basis for consumers to compare and select dedicated-purpose pool pumps.
    As described in detail in the September 2016 DPPP test procedure 
NOPR, EF is the metric currently used in the industry to describe the 
energy performance of dedicated-purpose pool pumps. 81 FR 64580, 64598-
64600 (Sept. 20, 2016). EF describes the efficiency of the dedicated-
purpose pool pump, in terms of gal/Wh, at a single speed point and on a 
single system curve. However, there are multiple tested speeds and 
system curves that can be used to determine EF, resulting in multiple 
EF values. For example, a single pump can have up to nine different EF 
values, making selection and comparison of equipment confusing.
    Conversely, WEF uses the same measured input data as EF (flow in 
gallons and input power in W), but weights the efficiency of the pump 
at multiple speeds into one comprehensive and consistent metric that 
better represents the average efficiency of the equipment during 
typical operation. This makes product comparison and selection more 
straightforward. During the DPPP Working Group discussions, the Working 
Group members agreed that the weighted average approach was a good 
approach to achieve a single energy metric that would be representative 
of the energy efficiency of dedicated-purpose pool pumps, while 
allowing for an equitable differentiation and comparison of performance 
among different DPPP models and technologies and providing the 
necessary and sufficient information for purchasers to make informed 
decisions regarding DPPP selection. (Docket No. EERE-2015-BT-STD-0008, 
No. 38 at pp. 212-213; Docket No. EERE-2015-BT-STD-0008, No. 58 at pp. 
170-171 and 178) The DPPP Working Group also agreed that, currently, 
comparing the multiple EF values was confusing and made equipment 
comparisons difficult. The DPPP Working Group also stated that some of 
the EF values did not meaningfully represent the efficiency of the 
equipment . (Docket No. EERE-2015-BT-STD-0008, No. 38 at p. 133; Docket 
No. EERE-2015-BT-STD-0008, No. 58 at pp. 170-171)
    However, the DPPP Working Group also discussed the importance of 
the EF metric for making product selections for specific applications 
or making energy saving calculations in support of utility programs. 
(Docket No. EERE-2015-BT-STD-0008, No. 38 at p. 133 and 213-214; Docket 
No. EERE-2015-BT-STD-0008, No. 58 at pp. 167-170 and 174-175) Due to 
the interest expressed in the use of the EF metric during the DPPP 
Working Group negotiations, in contrast to typical practice, DOE 
proposed to allow the representation of two metrics, EF and WEF. 
Specifically, DOE proposed to include EF as an optional alternative 
metric in addition to WEF. 81 FR 64580, 64627-64628 (Sept. 20, 2016). 
DOE notes that the use of this optional additional metric is a unique 
allowance in this case, a result of a negotiated rulemaking where the 
industry clearly represented the importance of maintaining the use of 
the EF metric. DOE provided the DPPP Working Group with an opportunity 
through the NOPR to formally express their intent to continue using EF 
as an alternative metric at multiple speeds and/or system curves, in 
addition to WEF, to describe the energy performance of dedicated-
purpose pool pumps.
    In the September 2016 DPPP test procedure NOPR public meeting, the 
CA IOUs expressed support for the ability to test EF at different 
speeds, in addition to the DOE metric. (CA IOUs, Public Meeting 
Transcript, No. 3 at pp. 78-79) However, other commenters requested 
clarification regarding the allowance for the representation of two 
metrics in DOE's proposal and described how the use of multiple metrics 
may cause confusion and complicate ratings with other voluntary 
industry programs. Specifically, during the public meeting and 
subsequent written comments, APSP, Pentair, and Hayward expressed 
confusion and concern related to representations of EF, coordination 
with ENERGY STAR and other entities, and standardization of reported 
metrics across the industry. (Pentair, Public Meeting Transcript, No. 3 
at pp. 8-9, Hayward, No. 6 at p. 1, APSP, No. 8 at p. 2; Pentair, No. 
11 at p. 5)
    DOE notes that such representations are governed by statute. EPCA 
requires that, manufacturers of dedicated-purpose pool pumps within the 
scope of the DPPP test procedure will be required to use the test 
procedure established in this rulemaking when making representations 
about the energy efficiency or energy use of their equipment. 
Specifically, 42 U.S.C. 6314(d) provides that, ``[e]ffective 180 days 
after a test procedure rule applicable to any covered equipment is 
prescribed . . . , [n]o manufacturer . . . may make any representation 
. . . respecting the energy consumption of such equipment or cost of 
energy consumed by such equipment, unless such equipment has been 
tested in accordance with such test procedure and such representation 
fairly discloses the results of such testing.''
    Therefore, beginning 180 days after publication of this final rule, 
any representations made with respect to the energy use or efficiency 
of dedicated-purpose pool pumps subject to testing pursuant to 10 CFR 
431.464(b) must be made in accordance with the results of testing 
pursuant to appendix B. Manufacturers will not be required to certify 
or make or make other representations regarding the performance of 
applicable dedicated-purpose pool pumps using the WEF metric until July 
19, 2021, the compliance date of energy conservation standards for 
dedicated-purpose pool pumps. If, however, manufacturers elect to make 
representations of efficiency prior to July 19, 2021, they will be 
required to do so using a measurement of the WEF metric derived from 
use of the DOE test procedure.

[[Page 36896]]

    Given the confusion regarding the use of the optional metrics 
expressed by the majority of interested parties, DOE is adopting, in 
this final rule, modifications to its proposal to ensure consistency 
with DOE's test procedure in the long term. Specifically, DOE is 
providing a test procedure to derive an EF metric, but only for 
representations made before July 19, 2021, the compliance date of any 
energy conservation standards for dedicated-purpose pool pumps. Thus, 
in this final rule, DOE is adopting two appendices. The first (appendix 
B) must be used beginning 180 days after publication of the final rule 
until July 19, 2021, the compliance date of energy conservation 
standards and includes both WEF and the optional EF method. However, 
DOE notes that if appendix B is used to make representations of the 
optional metric EF, the manufacturer must also make representations of 
the required metric WEF, such that, as required by EPCA, the 
representations ``fairly disclose the results of testing'' under 
appendix B. (42 U.S.C. 6314(d)).
    The second appendix (C) includes only the WEF metric. Manufacturers 
must make representations in accordance with appendix C on or after 
July 19, 2021, the compliance date of the adopted energy conservation 
standards, including when certifying compliance with those standards. 
As appendix C does not provide a procedure to arrive at an EF metric, 
after July 19, 2021, representations of EF will no longer be allowed.
    Through the use of these two appendices, DOE is clarifying that the 
industry has until July 19, 2021, the compliance date of adopted energy 
conservation standards to transition completely to WEF. DOE believes 
that the transition to use of this one, standardized metric will reduce 
confusion among manufacturers and in the marketplace. However, prior to 
July 19, 2021, DOE is allowing manufactures to continue to make 
representations using the EF metric, if tested in accordance with the 
appendix B, during the transition to representations using only the WEF 
metric derived from the test procedures in appendix C. DOE is allowing 
this optional continued use of EF until July 19, 2021, to provide the 
industry with increased time to transition fully to the new WEF metric, 
due to the interest in maintaining the EF metric expressed by the DPPP 
Working Group. DOE also notes that use of appendix B is optional and 
manufacturers may decline to make representations of EF and WEF, or any 
other DPPP metrics, until July 19, 2021, when representations must be 
based on the results of testing under appendix C.
2. Definition of Representation
    In response to the September 2016 DPPP test procedure NOPR, Hayward 
requested a definition of the term representation. (Hayward, No. 6 at 
p. 1) During the NOPR public meeting Hayward also requested that DOE 
provide an example of what would be a typical representation applied to 
other regulated products. (Hayward, Public Meeting Transcript, No. 3 at 
p. 9)
    In response, DOE notes that there is no formal definition of 
representation. However, as noted previously, 42 U.S.C. 6314(d), which 
establishes the 180-day representation requirements, states that 
manufacturers, distributors, retailers, and private labelers are 
prohibited from making ``any representation--in writing (including any 
representation on a label) or in any broadcast advertisement respecting 
the energy consumption of such equipment or cost of energy consumed by 
such equipment, unless such equipment has been tested in accordance 
with such test procedure and such representation fairly discloses the 
results of such testing.'' Therefore, representations include any and 
all values that are generated by the test procedure, as well as any 
statement regarding the energy consumption or cost of energy consumed. 
Representations include, for example, any information included in 
operation and installation manuals, in marketing materials, on a Web 
site, or on the equipment label, as well as verbal statements made in 
broadcast advertisements.
    In response to Hayward's request for an example of what would be a 
typical representation, potentially for a different product or piece of 
equipment, DOE provided the example at the September 2016 DPPP test 
procedure NOPR public meeting of a residential refrigerator where any 
representation of how much electricity the refrigerator consumes made 
in a manufacturer's literature or on their Web site would need to be 
made based on the appropriate DOE test procedure for that product. DOE 
stated that any metrics that come out of the DOE test procedure must be 
based on testing in accordance with that test procedure. (DOE, Public 
Meeting Transcript, No. 3 at pp. 9-10). For dedicated-purpose pool 
pumps, the relevant metrics as proposed were WEF, EF, rated hydraulic 
horsepower, DPPP nominal motor horsepower, DPPP total horsepower, DPPP 
service factor, true power factor, and maximum head, as well as pump 
efficiency, overall (wire-to-water) efficiency, driver power input, and 
pump power output (hydraulic horsepower), graphically or in numerical 
form, and potentially at a variety of speeds or load points.
3. Impact on Voluntary and Other Regulatory Programs
    Hayward asked whether or not current the current reporting of data 
(e.g., EF, horsepower, service factor, etc.) to EPA, CEC, and APSP are 
affected by this rulemaking (and whether DOE would work with those 
entities to update their standards). (Hayward, No. 6 at p. 1) Pentair 
also requested clarification regarding whether or not the EF value 
displayed in the ENERGY STAR database would be subject to DOE test 
procedures and representation requirements 180 days after publication 
of the final rule. (Pentair, Public Meeting Transcript, No. 3 at pp. 8-
9) CA IOUs were supportive of the DOE DPPP test procedure being 
incorporated by ENERGY STAR as well as if ENERGY STAR or other 
organizations wanted to test at different speeds, they could use the 
DOE test procedure, but specify the speed accordingly. (CA IOUs, Public 
Meeting Transcript, No. 3 at pp. 78-79)
    In response to Hayward and Pentair's comments regarding the 
reporting of EF, DOE clarifies that, as discussed previously, 180 days 
after publication of the final rule in the Federal Register, all 
representations of energy and efficiency metrics, including EF, will 
need to be updated to be consistent with the final DPPP test procedure. 
This is a statutory requirement of EPCA, not a timeframe set by DOE. 
DOE understands that manufacturers of pumps likely have historical test 
data which were developed with methods consistent with the DOE test 
procedure being adopted in this final rule. DOE notes that it does not 
expect that manufacturers will need to regenerate all of the historical 
test data as long as the tested units remain representative of the 
basic model's current design and the rating remains valid under the 
adopted method of test for dedicated-purpose pool pumps. If the testing 
methods used to generate historical ratings for DPPP basic models are 
substantially different from those adopted in this final rule or the 
manufacturer has changed the design of the basic model, the 
representations resulting from the historical methods would no longer 
be valid.
    APSP and Hayward noted that because DOE proposes EF as kgal/kWh, it 
is not consistent with other programs that require reporting it as gal/
Wh, and therefore the same number would be reported with different 
units. (APSP, No. 8 at p. 9; Hayward, No. 6 at p. 8)

[[Page 36897]]

    In response, DOE notes that, although the DOE test procedure for EF 
proposed to use kgal/kWh instead of gal/Wh, these values are 
numerically equivalent. However, for consistency with previous ratings, 
in this final rule, DOE is adopting units of gal/Wh for the optional EF 
test metric.
    With regard to coordination with voluntary and other regulatory 
programs in general, DOE notes that during the Working Group meetings 
and the NOPR public meeting, it was made clear to stakeholders that not 
only the industry, but also ENERGY STAR and CEC, would have to 
transition to the DOE test procedure within 180 days of publication of 
the test procedure final rule. (Docket No. EERE-2015-BT-STD-0008, No. 
54 at pp. 42-43; Public Meeting Transcript, No. 3 at pp. 9-11) On or 
after this date, representations must be made in accordance with the 
adopted DOE test procedure. Accordingly, DOE expects that both ENERGY 
STAR and CEC will transition to DOE's WEF metric and test procedure. 
DOE will work with ENERGY STAR and CEC to make this transition. 
However, during this period of transition, manufacturers may still be 
making representations of EF for other programs and must determine 
whether their historical test data is valid in accordance with the DOE 
test procedure or not. After 180 days, all representations, including 
representations of EF, must be made in accordance with the DOE test 
procedure. In the case any historical test data is determined not to be 
valid, that DPPP model must be retested in order to continue making 
representations of EF.
4. Request for Extension
    Hayward requested an extension of the 180 day timeframe for 
representations to allow manufacturers sufficient time to obtain the 
necessary resources, equipment, and personnel to respond to DOE's 
request. (Hayward, No. 6 at p. 1) Pentair and APSP stated that it was 
impossible to comply with the 180 day requirement for publishing 
performance and labeling products according to the DOE test procedure, 
particularly due to the relationship with ENERGY STAR requirements. 
They also noted that introducing new terms into the market so early 
would be disruptive. Therefore, they requested that the 180 day 
requirement be changed to coincide with the compliance date of energy 
conservation standards. (APSP, No. 8 at p. 2; Pentair, No. 11 at p. 5)
    In response to Pentair and APSP's concerns about labeling and 
introduction of new metrics, DOE did not propose that products be 
labeled within the 180 day period (see section III.I). Furthermore, DOE 
notes that manufacturers may decline to make any representations of 
WEF, or any other DPPP metrics, until July 19, 2021, meaning that no 
equipment is required to be rated in accordance with the DOE test 
procedure within 180 days. EPCA does require, however, that any 
representation that a manufacturer may choose to make on a label or 
otherwise must reflect testing under the applicable DOE test procedure, 
beginning 180 days after publication of this final rule. (42 U.S.C. 
6314(d)) In this case, they must make representations of WEF at a 
minimum, but may choose to continue making representations of EF, 
reflective of the results of testing in accordance with appendix B, 
until July 19, 2021.
    DOE acknowledges that some DPPP models currently participate in 
voluntary industry programs, such as ENERGY STAR, that rely on the EF 
metric. As such, DOE is accommodating the continued use of the EF 
metric until July 19, 2021 to allow a smooth transition in the 
industry, as requested by Pentair and APSP. However, as mentioned 
previously, both ENERGY STAR and CEC are also required to transition to 
DOE's new WEF metric and test procedure within 180 days. In addition, 
after July 19, 2021, only representations of WEF will be allowed, as 
representation of EF would not be reflective of testing under appendix 
C of the DPPP test procedure. DOE believes this should address Pentair 
and APSP's concern regarding market confusion with new metrics.
    DOE notes that 42 U.S.C. 6314(d)(2) allows manufacturers to 
petition for an extension of up to another 180 days in the case of 
undue hardship to the manufacturer. However, because a finding as to 
undue hardship is particular to a given manufacturer, the petition must 
be filed by the manufacturer within 60 days of the publication of this 
final rule, specifying the hardship to the manufacturer that would 
result from the 180-day requirement, and any extension will be 
determined by the Secretary on a case-by-case basis. (42 U.S.C. 
6314(d)(2))

G. Additional Test Methods

    In addition to the measurements and calculations necessary to 
determine WEF, DOE also must establish consistent terminology and 
measurement methods to categorize the capacity and maximum head of a 
given dedicated-purpose pool pump, as well as establish whether a given 
dedicated-purpose pool pump is self-priming. Specifically, as discussed 
in section III.D, DOE is establishing different load points and 
reference curves based on the rated hydraulic horsepower of a given 
pool filter pump. DOE's standardized and consistent method for 
determining DPPP capacity is discussed in section III.G.1. As discussed 
in section III.B.3.a, DOE also is differentiating pool filter pumps 
based on whether they are self-priming. DOE's test method for 
determining the self-priming capability of dedicated-purpose pool pumps 
is discussed in section III.G.2. In addition, waterfall pumps are 
categorized with respect to the maximum head the pump can produce. 
DOE's test method for determining maximum head is discussed in section 
III.G.3.
1. Determination of DPPP Capacity
    As discussed in detail in the September 2016 DPPP test procedure 
NOPR, industry currently uses several terms to characterize the 
capacity of dedicated-purpose pool pumps, including total horsepower, 
DPPP motor capacity, nameplate horsepower, rated horsepower, max-rated 
horsepower, up-rated horsepower, brake horsepower, service factor 
horsepower, peak power, and hydraulic horsepower. 81 FR 64580, 64620-
64623 (Sept. 20, 2016). The DPPP Working Group discussed these terms 
and recommended standardizing the terminology by referring to pump 
capacity around the hydraulic horsepower provided by the pump at a 
specific load point. (Docket No., EERE-2015-BT-STD-0008, No. 56 at pp. 
148-173) In addition, the DPPP Working Group recommended that DOE 
assist in standardizing the testing and rating of dedicated-purpose 
pool pumps with regard to other typical horsepower metrics. (Docket No. 
EERE-2015-BT-STD-0008, No. 92 at pp. 319-322) Specifically, the June 
2016 DPPP Working Group recommended that DOE should investigate a label 
that would facilitate proper application and include specified 
horsepower information. (Docket No. EERE-2015-BT-STD-0008, No. 82, 
Recommendation #9 at p. 5) Section III.G.1.a and section III.G.1.b 
contain DOE's proposals and the adopted provisions related to rated 
hydraulic horsepower and other DPPP motor horsepower metrics, 
respectively.
a. Rated Hydraulic Horsepower
    In the September 2016 DPPP test procedure NOPR, DOE proposed to 
consistently refer to and categorize dedicated-purpose pool pumps based 
on the hydraulic horsepower they can produce at a particular load 
point, as measured in accordance with the new DPPP test procedure. 81 
FR 64580,

[[Page 36898]]

64620-64623 (Sept. 20, 2016). In order to have consistent and 
comparable values of hydraulic horsepower, the DPPP test procedure must 
also specify a load point at which to determine the hydraulic 
horsepower. DOE proposed to categorize dedicated-purpose pool pumps 
based on the hydraulic horsepower determined at maximum speed on the 
reference curve for each DPPP variety and speed configuration (section 
III.D) and at full impeller diameter to result in consistent and 
comparable ratings among DPPP varieties and speed configurations. Id.
    While hydraulic horsepower (termed pump power output \51\) is 
defined in HI 40.6-2014, in the September 2016 DPPP test procedure 
NOPR, DOE proposed to use the term ``rated hydraulic horsepower'' to 
specifically identify the measured hydraulic horsepower on the 
reference curve (i.e., curve C for self-priming and non-self-priming 
pool filter pumps) or the specified load point (i.e., 17.0 ft or 10.0 
gpm for waterfall pumps or pressure cleaner booster pumps, 
respectively) at the maximum speed and full impeller diameter for the 
rated pump. 81 FR 64580, 64622 (Sept. 20, 2016). DOE's goal in 
proposing this term was to unambiguously specify the pump power 
characteristic and differentiate it from the general term ``hydraulic 
horsepower'' that can be determined at any location on the pump curve. 
Id. In addition, DOE proposed in the September 2016 DPPP test procedure 
NOPR that the representative value of rated horsepower, for each basic 
model of dedicated-purpose pool pump, be determined as the mean of the 
rated hydraulic horsepower for each tested unit measured in accordance 
with the new DPPP test procedure. Id. The test method for determining 
hydraulic horsepower (pump power output) is described in more detail in 
section III.E.2.b.
---------------------------------------------------------------------------

    \51\ The term ``pump power output'' in HI 40.6 is defined as 
``the mechanical power transferred to the liquid as it passes 
through the pump, also known as pump hydraulic power.'' It is used 
synonymously with ``hydraulic horsepower'' in this document. 
However, where hydraulic horsepower is used to reference the 
capacity of a dedicated-purpose pool pump, it refers to the rated 
hydraulic horsepower.
---------------------------------------------------------------------------

    DOE did not receive any comments related to the proposed definition 
of rated hydraulic horsepower, the proposal to base the 
characterization of DPPP capacity on rated hydraulic horsepower, or the 
proposed method for determining representative values of rated 
hydraulic horsepower. Consequently, DOE is adopting the terminology and 
test methods proposed in the September 2016 DPPP test procedure NOPR 
without modification.
b. Other DPPP Motor Horsepower Metrics
    DPPP Working Group suggested that DOE assist in standardizing the 
testing and rating of dedicated-purpose pool pumps with regard to other 
typical horsepower metrics (Docket No. EERE-2015-BT-STD-0008, No. 92 at 
pp. 319-322). In the September 2016 DPPP test procedure NOPR, DOE 
reviewed the terms typically used in the DPPP industry to characterize 
motor horsepower. 81 FR 64580, 64622 (Sept. 20, 2016). To alleviate any 
ambiguity associated with rated horsepower, total horsepower, and 
service factor, DOE proposed, in the September 2016 DPPP test procedure 
NOPR, the terms ``DPPP nominal motor horsepower,'' ``DPPP motor total 
horsepower,'' and ``DPPP service factor.'' 81 64580, 64622-64623 (Sept. 
20, 2016). The proposed definitions for these terms are as follows:
     Dedicated-purpose pool pump nominal motor horsepower means 
the nominal motor horsepower as determined in accordance with the 
applicable procedures in NEMA-MG-1-2014.
     Dedicated-purpose pool pump motor total horsepower (also 
known as service factor horsepower) means the product of the dedicated-
purpose pool pump nominal motor horsepower and the dedicated-purpose 
pool pump service factor of a motor used on a dedicated-purpose pool 
pump based on the maximum continuous duty motor power output rating 
allowable for the nameplate ambient rating and motor insulation class.
     Dedicated-purpose pool pump service factor means a 
multiplier applied to the rated horsepower of a pump motor to indicate 
the percent above nameplate horsepower at which the motor can operate 
continuously without exceeding its allowable insulation class 
temperature limit. 81 FR 64580, 64622-64623 (Sept. 20, 2016).
    The definitions proposed in the NOPR were developed based on the 
existing industry definitions for these terms. However, the term 
``dedicated-purpose pool pump nominal motor horsepower'' is defined 
slightly differently than the terms ``rated horsepower'' or ``nameplate 
horsepower,'' which are synonymous in the industry. Specifically, DOE 
defines DPPP nominal motor horsepower based on the nominal horsepower 
of the motor with which the dedicated-purpose pool pump is distributed 
in commerce, as determined in accordance with the applicable procedures 
in NEMA MG-1-2014, ``Motors and Generators.'' Id.
    In response to DOE's proposed definitions, CA IOUs were generally 
supportive of this approach and stated that CEC has similar terms to 
those proposed in the September 2016 DPPP test procedure NOPR, but 
noted that CEC uses the term ``motor capacity'' for consistency with 
the motor industry, which is synonymous with the total horsepower and 
service factor horsepower. (CA IOUs, Public Meeting Transcript, No. 3 
at p. 66).
    DOE acknowledges CA IOUs' comment and is aware that different 
organizations use different terms to describe similar quantities. 
Although DOE is aware that CEC uses the term motor capacity to refer to 
what DOE is proposing to define as DPPP motor total horsepower, DOE 
believes the proposed term is more straightforward and widely 
understood. DOE also notes that Title 20 of the California Code of 
Regulations defines both the term ``capacity of the motor'' and ``total 
horsepower'' (of an AC motor) as the product of the rated horsepower 
and the service factor of a motor used on a dedicated-purpose pool pump 
(also known as service factor horsepower) based on the maximum 
continuous duty motor power output rating allowable for the nameplate 
ambient rating and motor insulation class. Cal. Code Regs., tit. 20 
section 1602, subd. (g) However, to be consistent with both CEC 
definitions for the same term, this final rule will adopt the 
definition with a parenthetical to note that DPPP motor total 
horsepower is also referred to as service factor horsepower or motor 
capacity.
    Regarding the definition of DPPP nominal motor horsepower, based on 
response to comment discussed further in this section, DOE is not 
referencing NEMA MG-1-2014 for the test method to determine DPPP 
nominal motor horsepower and is instead directly referencing a more 
simplified method with equivalent burden. As such, DOE's proposed 
definition is no longer applicable. DOE believes specifying a test 
method for determining this value is sufficient and is not adopting a 
definition of DPPP nominal motor horsepower.
    In the September 2016 DPPP test procedure NOPR, DOE also proposed 
test methods to consistently and unambiguously determine the DPPP 
nominal motor horsepower, DPPP service factor, and DPPP motor total 
horsepower. To determine the DPPP nominal motor horsepower for single-
phase and polyphase small and medium AC motors, DOE proposed to 
reference

[[Page 36899]]

the relevant sections of NEMA MG-1-2014, as summarized in Table III.10. 
DOE also proposed to incorporate by reference these sections of NEMA 
MG-1-2014 into the DPPP test procedure. 81 FR 64580, 64622-64623 (Sept. 
20, 2016).

 Table III.10--Summary of Relevant NEMA MG-1-2014 Sections Applicable to
           Small and Medium Single- and Three-Phase AC Motors
------------------------------------------------------------------------
                                 Single-phase AC       Three-phase AC
       Characteristic                motors                motors
------------------------------------------------------------------------
Breakdown Torque............  Section 10.34 of      Section 12.39 of
                               NEMA MG-1-2014.*.     NEMA MG-1-2014.*
Locked-Rotor Torque.........  N/A.................  Section 12.37 or
                                                     12.38 of NEMA MG-1-
                                                     2014.*
Pull-up Torque..............  N/A.................  Section 12.40 of
                                                     NEMA MG-1-2014.*
Locked-Rotor Current........  N/A.................  Section 12.35.1 of
                                                     NEMA MG-1-2014.*
Slip........................  N/A.................  Section 1.19 of NEMA
                                                     MG-1-2014.*
------------------------------------------------------------------------
* Based on testing in accordance with section 12.30 of NEMA MG-1-2014.

    Similarly, for direct current (DC) motors, including electrically 
commutated motors, section 10.62 of part 10 of NEMA MG-1-2014, 
``Horsepower, Speed, and Voltage Ratings,'' describes the requirements 
for determining the nominal horsepower based on the applicable rated 
load speed and rated voltages for these motors. To clearly specify how 
DPPP nominal motor horsepower would be determined for DC motors based 
on the procedures in NEMA MG-1-2014, DOE also proposed to include 
instructions in the DPPP test procedure that reference the relevant 
sections of NEMA MG-1-2014. Id.
    DOE also proposed to base the determination of DPPP service factor 
on the standardized service factor values in table 12-4 of section 
12.51, ``Service Factor of Alternating-Current Motors.'' For AC motors 
not covered by table 12-4 of section 12.51 of NEMA MG-1-2014 and for DC 
motors, DOE proposed assigning a service factor of 1.0, consistent with 
section 12.51.2 of NEMA MG-1-2014. Id.
    Finally, DOE proposed that total horsepower would be calculated as 
the product of the DPPP nominal motor horsepower and the DPPP service 
factor, both determined in accordance with the applicable provisions in 
the DPPP test procedure. Id.
    In response to DOE's proposed test methods for the proposed DPPP 
motor horsepower metrics, Nidec commented that section 10.34 of NEMA 
MG-1-2014, which DOE proposed to incorporate by reference, applies 
specifically to general purpose motors, while small electric motors 
designed for use on dedicated-purpose pool pumps are definite purpose 
motors that do not follow the design criteria of NEMA MG-1-2014. 
Instead, Nidec suggested that DOE use equation (4) to determine nominal 
motor horsepower:
[GRAPHIC] [TIFF OMITTED] TR07AU17.005

Where:

Pnm = the nominal total horsepower \52\ at full load (in 
hp),
---------------------------------------------------------------------------

    \52\ Nidec's comment defined this term as the ``nominal motor 
horsepower at full load.'' However, the rest of the comment 
describes the value as the motor total horsepower. As Nidec also 
recommended a service factor of 1.0 (Nidec, No. 10 at pp. 2-3), 
nominal motor horsepower is equivalent to motor total horsepower and 
the equation is applicable to both quantities.
---------------------------------------------------------------------------

T = output torque at full load (in lb-ft), and
RPM = the motor speed at full load (in rpm).

    Nidec believes that the calculation in equation (4) is a better 
method for calculation than using the NEMA sections DOE proposed for 
DPPP motors and stated that equation (4) is the equation Nidec 
currently uses to rate such motors, which it manufacturers. (Nidec, No. 
10 at p. 2). Nidec also inquired as to the test methods DOE proposed to 
use for DPPP motors. (Nidec, No. 10 at p. 4).
    Nidec also commented that the service factor for small electric 
motors used in the DPPP industry should not follow NEMA section 12.51 
of NEMA MG-1-2014 but instead should be established as 1.0 for all DPPP 
motors. Nidec noted that this is consistent with the labeling 
requirements set forth in ANSI/APSP/ICC 15a-2013. (Nidec, No. 10 at p. 
3). Finally, Nidec commented that three-phase motors utilized on 
dedicated-purpose pool pumps are energy efficient and already regulated 
and, therefore, should not need further testing nor reporting 
requirements. (Nidec, No. 10 at p. 3).
    APSP agreed with Nidec that DPPP motors are typically definite-
purpose and do not always align with NEMA on mechanical and electrical 
performance. Similarly, APSP recommended using equation (4) to 
calculate nominal motor horsepower and assigning a service factor of 
1.0, such that nominal motor horsepower was equivalent to motor total 
horsepower. (APSP, No. 8 at p. 8).
    During the September 2016 DPPP test procedure NOPR public meeting, 
CA IOUs stated that commercial and industrial motors commonly have 
service factors of 1.15, where the motor is capable of performing at a 
higher level than what the nameplate shows. In contrast, in DOE's 
proposal of 1.0, the motor will do at best exactly what the nameplate 
states. (CA IOUs, Public Meeting Transcript, No. 3 at p. 68) Pentair 
also commented that the proposal would restrict a manufacturer's 
ability to use higher service factor motors for purposes of improved 
motor life and/or reduction of inventory/SKUs. (Pentair, No. 11 at p. 
3). However, Pentair expressed, in its comments, the importance of 
standardizing and labeling regarding DPPP horsepower metrics and 
described how the current practice of up-rate and full-rate labeling of 
similar products causes significant confusion in the market. (Pentair, 
No. 11 at p. 5). In response to Nidec and APSP's suggestions regarding 
the appropriate test methods for determining motor horsepower and 
service factor, DOE believes the method suggested by Nidec and APSP is 
sound and, as described by the commenters, represents the methods 
currently used by the motor industry to determine motor total 
horsepower for DPPP motors. DOE is also aware that equation (4) is a 
common method for measuring motor horsepower when speed and torque are 
known. Specifically, equation

[[Page 36900]]

(4) is described in NEMA MG-1-2014 (the standard DOE proposed to 
incorporate by reference for this determination), the IEEE Standard 
114-2010, ``Test Procedure for Single-Phase Induction Motors''; IEEE 
Standard 113-1985, ``IEEE Guide: Test Procedures for Direct-Current 
Machines''; and Canadian Standards Association (CSA) C747-2009 
(Reaffirmed (RA) 2014), ``Energy Efficiency Test Methods for Small 
Motors.'' \53\
---------------------------------------------------------------------------

    \53\ DOE notes that the equation in section 6.4 of CSA C&47-2009 
(RA 2014) uses a conversion factor of 5254, instead of the value 
5252 suggested by NEMA. However, based on DOE's review, DOE believes 
a conversion factor of 5252 is more accurate and is more consistent 
with the value listed in other standards.
---------------------------------------------------------------------------

    DOE notes that this method provides a direct measurement of the 
horsepower provided by the motor at full load, which is consistent with 
the term DPPP motor total horsepower, as opposed to DPPP nominal motor 
horsepower as suggested by Nidec and APSP. However, DOE acknowledges 
that, as Nidec and APSP both suggested using a service factor of 1.0 
with this method, the DPPP nominal motor horsepower and DPPP motor 
total horsepower would be equivalent and either could be determined 
with the suggested method shown in equation (4). Therefore, determining 
nominal motor horsepower using equation (4) is technically correct, 
provided it is used with a service factor of 1.0. Both Nidec and APSP 
specifically suggested determining DPPP nominal motor horsepower using 
equation (4), setting DPPP service factor to 1.0, and determining DPPP 
motor total horsepower as the product of the DPPP nominal motor 
horsepower and DPPP service factor. (Nidec, No. 10 at p. 4; APSP, No. 8 
at p. 8). As noted in the NOPR, determining DPPP motor total horsepower 
as the product of DPPP nominal motor horsepower and DPPP service factor 
is also consistent with ANSI/APSP/ICC 15a-2013,\54\ ENERGY STAR,\55\ 
and CA Title 20 \56\ definitions for the term. 81 FR 64580, 64620-64622 
(Sept. 20, 2016). As such, DOE is adopting the method suggested by 
Nidec and APSP as the test method for determining DPPP nominal total 
horsepower for dedicated-purpose pool pumps subject to the adopted 
procedure.\57\ As discussed further in this section regarding 
incorporations by reference, the burden and fundamental procedure 
associated with the adopted procedure for measuring motor performance 
are not different from those proposed in the NOPR, but the adopted 
method provides a simpler, more direct description.
---------------------------------------------------------------------------

    \54\ ANSI/APSP/ICC-15a-2013, American National Standard for 
Residential Swimming Pool and Spa Energy Efficiency--section 3, 
``Definitions.'' Includes Addenda A. ANSI Approved January 9, 2013. 
The Association of Pool and Spa Professionals and the International 
Code Council.
    \55\ ENERGY STAR Program Requirements for Pool Pumps Eligibility 
Criteria (Version 1.1), section 1.4, ``Product Ratings.''
    \56\ Cal. Code Regs., tit. 20 section 1602, subd. (g).
    \57\ As discussed subsequently in this section, DOE is adopting 
test methods for determining the motor horsepower characteristics of 
dedicated-purpose pool pumps that are only applicable to dedicated-
purpose pool pumps distributed in commerce with single-phase AC or 
DC motors.
---------------------------------------------------------------------------

    Regarding service factor, DOE appreciates Nidec and APSP's 
suggestions regarding service factor and agrees that a service factor 
of 1.0 for all DPPP motors that are subject to the adopted motor 
horsepower provisions would be more consistent and ensure standardized 
rating across DPPP models. It also enables to use of the more direct 
determination of DPPP nominal horsepower adopted in this final rule. 
Although Pentair requested more flexibility specifically with regard to 
service factor, Pentair also requested standardization in horsepower 
ratings. As such, in this final rule, in order to better standardize 
the motor horsepower ratings as recommended by commenters, DOE is 
adopting a service factor of 1.0 for all dedicated-purpose pool pumps 
to which the adopted motor horsepower test methods apply.
    Regarding Nidec's statement that a service factor of 1.0 was 
consistent with ANSI/APSP/ICC 15a-2013, DOE reviewed ANSI/APSP/ICC 15a-
2013 and finds that ANSI/APSP/ICC 15a-2013 does not appear to provide 
any restriction with regard to the service factor of DPPP motors. In 
fact, ANSI/APSP/ICC 15a-2013 defines several terms, including rated 
horsepower, total horsepower, and service factor, that indicate service 
factors greater than 1.0 are quiet common. For example, the definition 
of service factor references a pump with a rated horsepower of 1.5 hp, 
a service factor of 1.65, and a total horsepower of 2.475 hp.\58\
---------------------------------------------------------------------------

    \58\ ANSI/APSP/ICC-15a-2013, section 3, ``Definitions.''
---------------------------------------------------------------------------

    In response to CA IOUs comments on the proposed DPPP service factor 
for DPPP motors, DOE notes that, consistent with CA IOUs observation, 
the service factor prescribed in table 12-4 of section 12.51, ``Service 
Factor of Alternating-Current Motors,'' is 1.15 for most AC motors with 
a nominal horsepower greater than 0.5 horsepower and typical 
synchronous speeds. However, consistent with section 12.51.2 of NEMA 
MG-1-2014 and the comments of Nidec and APSP, DOE believes that a 
service factor of 1.0 for AC motors not covered by table 12-4 is more 
appropriate than a service factor of 1.15. In addition, as discussed in 
the September 2016 DPPP test procedure NOPR, NEMA MG-1-2014 does not 
provide information regarding service factor for DC motors, as nominal 
synchronous speeds are typically not applicable to DC motors. 
Therefore, DOE believes a DPPP service factor of 1.0 is appropriate for 
DC motors, effectively making the nominal horsepower equivalent to the 
total horsepower of the dedicated-purpose pool pump, which is 
consistent with the convention for rating such motors in the motor 
industry.
    However, DOE notes that Nidec recommended applying the suggested 
methodology for single-phase DPPP motors only. Nidec indicated that 
three-phase motors sold with dedicated-purpose pool pumps are already 
subject to DOE's energy conservation standards for polyphase electric 
motors at 10 CFR 431.25 or 10 CFR 431.446, depending on the size of the 
motor. (Nidec, No. 10 at p. 3). DOE agrees with Nidec that any 
polyphase induction motors currently subject to DOE's existing 
regulations for electric motors or small electric motors are already 
subject to test procedures that describe how to determine relevant 
motor performance parameters, including nominal motor horsepower and 
service factor, in a standardized and consistent manner. Therefore, 
additional specifications in the DPPP test procedure are not 
required.\59\ For these reasons, in this final rule, DOE is limiting 
the applicability of the test methods for determining DPPP nominal 
motor horsepower and DPPP service factor to dedicated-purpose pool 
pumps that are distributed in commerce with single-phase AC or DC 
motors, which are not subject to DOE's existing regulations for 
electric motors or small electric motors.
---------------------------------------------------------------------------

    \59\ DOE notes that the existing electric motor and small 
electric motor regulations reference relevant sections of NEMA MG-1-
2014 and are consistent with the test methods proposed in the 
September 2016 DPPP TP NOPR. As such, consistent with CA IOUs 
observation, dedicated-purpose pool pumps distributed in commerce 
with polyphase motors will continue to apply table 12-4 in NEMA MG-
1-2014.
---------------------------------------------------------------------------

    DOE notes that the test method for determining DPPP motor total 
horsepower is still applicable to all dedicated-purpose pool pumps, 
including those distributed in commerce with polyphase AC motors, as 
NEMA MG-1-2014 does directly define or prescribe unambiguous methods 
for determining motor total horsepower. In addition, as discussed

[[Page 36901]]

further in section III.K.2 and III.I, all dedicated-purpose pool pumps, 
including dedicated-purpose pool pumps distributed in commerce with 
polyphase AC motors, are required to report to DOE the DPPP motor total 
horsepower and include such information on the equipment nameplate.
    In adopting Nidec and APSP's recommended test method for 
determining DPPP nominal motor horsepower, DOE is not referencing NEMA 
MG-1-2014 as the method for determining DPPP motor total horsepower. 
However DOE still must adopt specific and standardized test methods for 
measuring speed and torque of DPPP motors at full load. IEEE Standard 
114-2010, ``Test Procedure for Single-Phase Induction Motors'' (IEEE 
114-2010) and IEEE Standard 113-1985, ``Test Procedures for Direct-
Current Machines'' (IEEE 113-1985) describe the general test 
requirements and methods for determining motor speed and torque at full 
load for single-phase AC induction motors and DC motors, respectively. 
DOE notes that these are the test methods referenced in NEMA MG-1-2014, 
so the burden and fundamental procedure associated with measuring motor 
performance are not different from those proposed in the NOPR. However, 
as the method of determining DPPP nominal motor horsepower suggested by 
Nidec and APSP and incorporated by DOE is more direct, DOE is 
incorporating by reference the relevant sections of IEEE 114-2010 and 
IEEE 113-1985 directly, as opposed to through NEMA MG-1-2014.
    In addition, DOE notes that CSA C747-2009 (RA 2014) is another 
commonly referenced test method for determining motor horsepower that 
is treated as equivalent to IEEE 114-2010 in DOE's existing small 
electric motor test procedure. 10 CFR 431.444(b). In DOE's July 2009 
small motors test procedure final rule, DOE determined that IEEE 114-
2010 and CSA C747-2009 (RA 2014) would produce equivalent ratings. 74 
FR 32059, 32065 (July 7, 2009). DOE has reviewed CSA C7474-2009 (RA 
2014) as compared to IEEE 113-1985 and believes that the standards will 
also produce equivalent measurements of full load speed and torque, 
which are the values relevant for this test procedure. DOE understands 
that some manufacturers may currently be using CSA C747-2009 (RA 2014) 
to determine the performance of small motors, including both single-
phase AC and DC motors. Therefore, to provide flexibility to 
manufacturers and consistency with DOE's existing motor regulations, 
DOE is adopting test provisions that allow for testing in accordance 
with either the applicable IEEE standard (IEEE 114-2010 for single-
phase AC motors or IEEE 113-1985 for DC motors) or CSA C747-2009 (RA 
2014). DOE believes that these standards provide the necessary and 
sufficient methods to determine the torque and rotating speed of the 
motor at full load for single-phase AC induction motors and DC motors, 
respectively. Specifically, DOE is adopting the sections specified in 
the Table III.11 for each standard, which are relevant to measuring 
speed and torque at full load. In addition, section E.3.2 of both 
appendix B and C, as adopted in this final rule, states that full-load 
speed and torque shall be determined based on the maximum continuous 
duty motor power output rating allowable for the motor's nameplate 
ambient rating and insulation class.

  Table III.11--Sections of IEEE 114-2010 and IEEE 113-1985 That DOE Incorporates by Reference for Determining
                                           DPPP Motor Total Horsepower
----------------------------------------------------------------------------------------------------------------
          Characteristic                IEEE 114-2010             IEEE 113-1985         CSA C747-2009 (RA 2014)
----------------------------------------------------------------------------------------------------------------
Relevant Scope....................  Single-phase AC        DC Motors.................  Single-phase AC and DC
                                     Motors.                                            Motors
Test Conditions...................  Section 4............  Section 3.5, 4.1.2, and     Section 5.2, 5.3, 5.5.
                                                            4.1.4 (and machine          6.1.
                                                            temperature rise shall be
                                                            some value between 50%
                                                            and 100% of rated
                                                            temperature rise, as
                                                            specified in 5.4.3).
Test Requirements.................  Section 3.2 and        Section 5.4.3.2 (except     Section 6.3, 6.4 (except
                                     section 6.             that curves of torque       in section (b) the
                                                            versus electric power are   conversion factor shall
                                                            not required, as only       be 5252), 6.5 (except
                                                            measurement at full load    only measurements at
                                                            is required).               full load are required),
                                                                                        and 6.7.1.
Measurement Instruments...........  Section 5.2 and 5.3..  Section 3.1, 3.4..........  Section 5.1, 5.4.6,
                                                                                        5.4.7, 5.6.4, 5.6.5,
                                                                                        5.6.6, 6.2.
----------------------------------------------------------------------------------------------------------------

    In responses to Nidec's inquiry regarding the test methods for 
determining DPPP motor horsepower characteristics, the test methods 
referenced in NEMA MG-1-2014 were, by extension, proposed to be 
incorporated by reference as the specific testing requirements for 
determining motor performance in the September 2016 DPPP test procedure 
NOPR.
    Regarding the scope of the proposed motor horsepower testing 
requirements, Pentair commented that a loophole could be introduced in 
replacement DPPP motors are not also subject to these requirements. 
(Pentair, No. 11 at p. 3).
    In response to Pentair's request, DOE notes that the scope of the 
required DOE test procedure recommended by the DPPP Working Group and 
proposed by DOE in the September 2016 DPPP test procedure NOPR is 
limited to dedicated-purpose pool pumps. DOE acknowledges that, in the 
September 2016 DPPP test procedure NOPR, DOE proposed an optional test 
method to determine WEF for replacement DPPP motors. 81 FR 64580, 64629 
(Sept. 20, 2016). However, in the September 2016 DPPP test procedure 
NOPR, DOE also described how DOE does not intend to regulate 
replacement DPPP motors as part of this rulemaking because they do not 
(by themselves) meet the definition of a dedicated-purpose pool pump. 
Id. Similar to the optional testing provisions for replacement DPPP 
motors adopted in this final rule, manufacturers of replacement DPPP 
motors may opt to apply the provisions for determining DPPP nominal 
motor horsepower, DPPP service factor, and DPPP motor total horsepower, 
as applicable, and make representations of these quantities if they so 
choose. However, as discussed further in section III.J, replacement 
DPPP motors are not dedicated-purpose pool pumps, and requirements for 
such equipment were not discussed or recommended by the DPPP Working 
Group. Therefore, DOE is declining to adopt any required testing 
provisions or

[[Page 36902]]

reporting requirements for replacement DPPP motors in this rulemaking. 
DOE may address requirements for replacement DPPP motors in a future 
rulemaking specifically addressing such equipment.
    In summary, based on the comments received in response to the 
September 2016 DPPP test procedure NOPR, DOE is adopting revised test 
methods for DPPP nominal motor horsepower and DPPP service factor, 
which are applicable only to dedicated-purpose pool pumps distributed 
in commerce with single-phase AC motors and DC motors. DOE is also 
adopting the test method for DPPP motor total horsepower proposed in 
the September 2016 DPPP test procedure NOPR without modification, which 
is applicable to all dedicated-purpose pool pumps. DOE believes such 
standardized rating methods are consistent with the recommendations of 
the DPPP Working Group, will be beneficial to consumers in selecting 
and applying the equipment, and are consistent with existing methods 
used to rate motors today. DOE notes that these standardized horsepower 
metrics are intended to support labeling provisions for dedicated-
purpose pool pumps, which are discussed further in section III.I.
2. Determination of Self-Priming Capability
    As discussed in section III.B.3.a, DOE proposed separate 
definitions for self-priming and non-self-priming pool filter pumps 
based on their capability to self-prime as determined based on testing 
in accordance with NSF/ANSI 50-2015. In the September 2016 DPPP test 
procedure NOPR, DOE proposed to incorporate by reference relevant 
sections of the NSF/ANSI 50-2015 standard and also specify several 
modifications and additions to improve repeatability and consistency of 
the test results. 81 FR 64580, 64623-27 (Sept. 20, 2016). Specifically, 
DOE proposed to incorporate by reference section C.3 of Annex C of NSF/
ANSI 50-2015, which contains the relevant test parameters, test 
apparatus, and testing instructions for determining the self-priming 
capability of self-priming and non-self-priming pool filter pumps. Id.
    To determine the self-priming capability of self-priming and non-
self-priming pool filter pumps, DOE proposed in the September 2016 DPPP 
test procedure NOPR to follow the test method specified in section C.3 
of Annex C of NSF/ANSI 50-2015 with several minor modifications to 
improve test consistency and repeatability, as well as conform with the 
new definitions for self-priming and non-self-priming pool filter pumps 
presented in section III.B.3.a. Id. First, where section C.3.2, 
``Apparatus,'' and section C.3.4, ``Self-priming capability test 
method,'' state that the ``suction line must be essentially as shown in 
annex C, figure C.1'' DOE notes that the suction line refers to the 
riser pipe that extends from the pump suction inlet to the water 
surface. DOE also proposed in the September 2016 DPPP test procedure 
NOPR to clarify that ``essentially as shown in Annex C, figure C.1'' 
means:
     The centerline of the pump impeller shaft is situated a 
vertical distance of 5.0 feet above the water level of a water tank of 
sufficient volume as to maintain a constant water surface level for the 
duration of the test;
     the pump draws water from the water tank with a riser pipe 
that extends below the water level a distance of at least 3 times the 
riser pipe diameter (i.e., 3 pipe diameters); and
     the suction inlet of the pump is at least 5 pipe diameters 
from any obstructions, 90[deg] bends, valves, or fittings.
    Id.
    Further, DOE noted that NSF/ANSI 50-2015 does not specify where the 
measurement instruments are to be placed in the test set up. DOE 
understands that instruments are typically installed at the suction 
inlet of the pump and therefore, DOE proposed to specify that all 
measurements of head, flow, and water temperature must be taken at the 
pump suction inlet. Id. It is also important that all measurements are 
taken with respect to a common reference plane, which DOE proposed 
should be the centerline of the pump impeller shaft. DOE also proposed 
that such adjustments be performed in accordance with section A.3.1.3.1 
of HI 40.6-2014. Id.
    In addition, DOE proposed that height, or vertical lift (VL), must 
be determined from the height of the water to the centerline of the 
pump impeller shaft. Id. In addition to proposing clarifications with 
regard to the measurement of VL, DOE proposed clarifications on how to 
correct the value to a standard temperature of 68 [deg]F, a pressure of 
14.7 psia, and a water density of 62.4 lb/ft\3\, as shown in equation 
(5). DOE notes that the definitions proposed in the September 2016 DPPP 
test procedure NOPR specifies a VL of 5.0 feet:
[GRAPHIC] [TIFF OMITTED] TR07AU17.006


Where:

VL = vertical lift of the test apparatus from the waterline to the 
centerline of the pump impeller shaft, in ft;
[rho]test = density of test fluid, in lb/ft\3\; and
Patm,test = absolute barometric pressure of test apparatus location 
at centerline of pump impeller shaft, in psia.

81 FR 64580, 64624-25 (Sept. 20, 2016).
    In addition, DOE also noted in the September 2016 DPPP test 
procedure NOPR that section C.3.2 of NSF/ANSI 50-2015 describes the 
instruments that are required to perform the test, but, with the 
exception of the time indicator, does not specify their required 
accuracy. Subsequently, DOE proposed to apply the accuracy requirements 
contained in HI 40.6-2014 to the measurement devices noted in NSF/ANSI 
50-2015, as detailed in Table III.12. 81 FR 64580, 64625 (Sept. 20, 
2016).

 Table III.12--Measurement Device Accuracy Requirements for Measurements
                  Devices Specified in NSF/ANSI 50-2015
------------------------------------------------------------------------
                                       Accuracy
       Measurement device             requirement           Source
------------------------------------------------------------------------
Elapsed Time Indicator..........  0.1     NSF/ANSI 50-2015.
                                   min.
Gauge Pressure Indicating Device  2.5%    HI 40.6-2014.
                                   of reading *.
Temperature Indicating Device...  0.5     HI 40.6-2014.
                                   [deg]F.

[[Page 36903]]

 
Barometric Pressure Indicating    2.5%    HI 40.6-2014.
 Device.                           of reading *.
Height..........................  0.1     N/A.
                                   inch.
------------------------------------------------------------------------
* The 2.5 percent requirement applies to discharge, suction,
  and differential head measurements, as indicated in table 40.6.3.2.3,
  for values taken between 40 and 120 percent of BEP flow.

    DOE also noted in the September 2016 DPPP test procedure NOPR that 
NSF/ANSI 50-2015 does not specify an instrument for measuring distance 
and proposed that instruments for measuring distance are accurate to 
0.1 inch, consistent with other requirements for distance-
measuring instruments (section III.E.2.f). 81 FR 64580, 64625 (Sept. 
20, 2016).
    In section C.3.3, ``Test conditions,'' NSF/ANSI 50-2015 specifies 
test conditions for both swimming pools and hot tubs/spas. NSF/ANSI 50-
2015 specifies test conditions in terms of water temperature and 
turbidity requirements. DOE notes that the remainder of the DPPP test 
procedure is to be conducted with ``clear water,'' as required by HI 
40.6-2014. While NSF/ANSI 50-2015 and HI 40.6-2014 contain different 
requirements, DOE believes they are intended to do the same thing and 
result in similar water characteristics. Therefore, to simplify testing 
requirements and be consistent with the other portions of the DPPP test 
procedure, in the September 2016 DPPP test procedure NOPR, DOE proposed 
to require testing of the self-priming capability of pool filter pumps 
with clear water that is between 50 and 86 [deg]F, as opposed to the 
existing water temperature and turbidity requirements contained in 
section C.3.3 of the NSF/ANSI 50-2015 test method. 81 FR 64580, 64625-
64626 (Sept. 20, 2016).
    Section C.3.4, ``Self-priming capability test method,'' of NSF/ANSI 
50-2015 specifies that ``the elapsed time to steady discharge gauge 
reading or full discharge flow'' is to be recorded as the measured 
priming time (MPT). However, NSF/ANSI 50-2015 does not specify how to 
determine ``steady discharge gauge reading or full discharge flow.'' In 
the September 2016 DPPP test procedure NOPR, DOE proposed to determine 
steady discharge gauge and full discharge flow as when the changes in 
head and flow, respectively, are within the tolerance values specified 
in table 40.6.3.2.2, ``Permissible amplitude of fluctuation as a 
percentage of mean value of quantity being measured at any test 
point,'' of HI 40.6-2014. 81 FR 64580, 64626 (Sept. 20, 2016). Based on 
this criteria for stabilization, DOE also proposed that the elapsed 
time should be recorded when both steady state pressure and flow 
readings have been achieved. Id.
    Section C.3.4 of NSF/ANSI 50-2015 then specifies that the true 
priming time (TPT) is calculated by scaling the MPT based on the 
relative diameter of the riser pipe and the pump suction inlet 
according to the following equation (6):
[GRAPHIC] [TIFF OMITTED] TR07AU17.007

    As discussed in the September 2016 DPPP test procedure NOPR, DOE 
noted that, although theoretically correct, testing with different 
riser pipe diameters could affect the accuracy and repeatability of the 
results, especially if pipes that are substantially larger or smaller 
than the pump suction inlet are used. 81 FR 64580, 64626 (Sept. 20, 
2016). As a result, DOE proposed that testing of self-priming 
capability of pool filter pumps that are not already certified with 
NSF/ANSI 50-2015 be performed with riser pipe that is of the same pipe 
diameter as the pump suction inlet. As a result, no adjustment of MPT 
would be required and TPT would be measured directly. Id.
    Section C.3.4 of NSF/ANSI 50-2015 also specifies that the complete 
test method must be repeated, such that two TPT values are generated. 
In addition, section C.3.5 of NSF/ANSI 50-2015 requires that both 
measurements must be less than 6 minutes or the manufacturer's 
specified TPT, whichever is greater. However, as the criteria for TPT 
established in DOE's definitions (see section III.B.3.a) instead 
reference a TPT of 10.0 minutes, DOE proposed to specify that both test 
runs result in TPT values that are less than or equal to 10.0 minutes. 
81 FR 64580, 64626 (Sept. 20, 2016).
    Similarly, section C.3.5 of NSF/ANSI 50-2015 describes the TPT 
criteria that pumps must meet in order to certify as self-priming under 
NSF/ANSI 50-2015 and the caption of figure C.1 specifies the VL 
criteria applicable to the NSF/ANSI 50-2015 test. As noted previously, 
DOE's definitions proposed in the September 2016 DPPP test procedure 
NOPR reference a specific TPT of 10.0 minutes and VL of 5.0 feet. 
Therefore, DOE proposed to exclude section C.3.5 and the relevant 
portions of the VL definition in the caption of C.1 to be consistent 
with DOE's definition. 81 FR 64580, 64626 (Sept. 20, 2016).
    In the September 2016 DPPP test procedure NOPR public meeting, DOE 
presented the general procedure for the self-priming test. (Public 
Meeting Presentation, No. 2 at p. 44) During the September 2016 public 
meeting, Hayward sought clarification regarding the second step in the 
overview of the self-priming test procedure DOE provided in the 
preamble to the September 2016 DPPP test procedure NOPR. Specifically, 
Hayward sought confirmation that the terminology ``shut off and allow 
pump to drain'' did not mean open the pump to atmosphere. (Hayward, 
Public Meeting Transcript, No. 3 at pp. 73-74)
    In response to Hayward's inquiry, DOE notes that the statement in 
the September 2016 DPPP test procedure NOPR meant only to shut off the 
pump and allow all lines to be drained of water, without opening the 
pump to the atmosphere, as would typically be the case during the NSF/
ANSI 50-2015 test. Specifically, in the DPPP test procedure, DOE is 
incorporating by reference section C.3 of Annex C of NSF/ANSI 50-2015 
with the minor modifications discussed above as the test method for 
determining the self-priming capability of pool filter pumps and all 
testing must be conducted in accordance with the instructions in those 
sections.

[[Page 36904]]

    CEC, in written comments, supported DOE's proposal to use NSF/ANSI 
50-2015 to differentiate between self-priming and non-self-priming pool 
filter pumps. (CEC, No.7 at p. 2) DOE did not receive any other 
comments suggesting changes to DOE's proposed test method to determine 
the self-priming capability of pool filter pumps.
    Therefore, in this final rule, DOE is adopting the self-priming 
test method proposed in the September 2016 DPPP test procedure NOPR 
without modification. This method relies on section C.3 of NSF/ANSI 50-
2015 with several minor clarifications and modifications. However, DOE 
notes that, as discussed in section III.E.1, in this final rule, DOE is 
adopting alternative requirements for the test fluid instead of testing 
with ``clear water'' as specified in HI 40.6-2014. As such, to be 
consistent with the remainder of the DPPP test procedure, in this final 
rule DOE is adopting provisions that testing for self-priming 
capability be performed with the same test fluid used for all other 
testing, instead of testing with ``clear water'' as proposed in the 
September 2016 DPPP test procedure NOPR. DOE notes that the 
characteristics of the test fluid adopted in this final rule are now 
more consistent with those in NSF/ANSI 50-2015 as well.
    Table III.13 provides a summary of DOE's modifications and 
additions to NSF/ANSI 50-2015 to remove ambiguity from the NSF/ANSI 50-
2015 test method, improve the repeatability of the test, and harmonize 
the test requirements with the other DPPP test procedure requirements 
contained in this final rule.

Table III.13--Summary of Modifications and Additions to NSF/ANSI 50-2015
                      Self-Priming Capability Test
------------------------------------------------------------------------
                                   NSF/ANSI 50-2015    DOE modification/
    NSF/ANSI 50-2015 section         specification         addition
------------------------------------------------------------------------
Section C.3.2, ``Apparatus,''     ``Essentially as    More clearly
 and Section C.3.4, ``Self-        shown in Annex C,   specify the test
 priming capability test           figure C.1''.       setup
 method''.                                             requirements,
                                                       where VL = 5.0
                                                       feet, adjusted to
                                                       nominal
                                                       conditions of
                                                       14.7 psia and a
                                                       water density of
                                                       62.4 lb/ft\3\.
Section C.3.2, ``Apparatus''....  Measurement         Accuracy
                                   Instruments (no     requirements
                                   accuracy            contained in HI
                                   requirements).      40.6-2014, table
                                                       40.6.3.2.3, as
                                                       applicable.
Section C.3.3, ``Test             Water temperature   Test with clear
 conditions''.                     and turbidity       water between 50
                                   requirements; all   and 107 [deg]F
                                   measurements at     with <=15 NTU.
                                   hot tub/spa
                                   temperatures
                                   unless for
                                   swimming pool
                                   applications only.
Section C.3.4, ``Self-priming     Measure MPT at      Measure elapsed
 capability test method''.         steady discharge    time at steady
                                   gauge or full       state pressure
                                   discharge flow.     and temperature
                                                       conditions; MPT
                                                       is when those
                                                       conditions were
                                                       first achieved.
Section C.3.4, ``Self-priming     Adjust MPT to TPT   Use pipe of the
 capability test method''.         based on relative   same diameter as
                                   diameter of         the suction inlet
                                   suction inlet and   (MPT = TPT).
                                   pipe diameter.
Section C.3.5, ``Acceptance       TPT of 6 minutes    Excluded; TPT = 10
 criteria,'' and caption of        or the              minutes and VL =
 figure C.1.                       manufacturer's      5.0 feet adjusted
                                   specified           to nominal
                                   recommended time,   conditions of
                                   whichever is        14.7 psia and a
                                   greater and VL of   water density of
                                   5.0 feet or the     62.4 lb/ft\3\.
                                   manufacturer's
                                   specified lift,
                                   whichever is
                                   greater.
------------------------------------------------------------------------

3. Determination of Maximum Head
    As noted in section III.B.4.a, waterfall pumps are, by definition, 
pool filter pumps with maximum head less than or equal to 30 feet, and 
a maximum speed less than or equal to 1,800 rpm. Therefore, in order to 
unambiguously distinguish waterfall pumps from other varieties of pool 
filter pumps, DOE must establish a specific and repeatable method for 
determining maximum head of pool filter pumps. Based on the 
demonstrated relationship between flow and head, DOE understands the 
maximum head to be associated with the minimum flow of the pump. 
However, DOE also understands that pumps cannot always be operated 
safely or reliable at zero or very low flow conditions. Therefore, in 
the September 2016 DPPP test procedure NOPR, DOE proposed that for the 
purposes of differentiating waterfall pumps from other varieties of 
pool filter pumps, the maximum head of pool filter pumps be determined 
based on the measured head value associated with the maximum speed and 
the minimum flow rate at which the pump is designed to operate 
continuously or safely. 81 FR 64580, 64627 (Sept. 20, 2016). DOE notes 
that the minimum flow rate will be assumed to be zero unless otherwise 
specified in the manufacturer literature. Id.
    DOE did not receive any comments in response to the proposed test 
method for determining maximum head. Therefore, in this final rule, DOE 
is adopting the proposal to determine the maximum head of dedicated-
purpose pool pumps as the head associated with the maximum speed and 
the minimum flow rate at which the pump is designed to operate 
continuously or safely, which is assumed to be zero unless otherwise 
specified in the manufacturer literature.

H. Energy Factor Test Method

    As discussed previously, in section III.F, in the September 2016 
DPPP test procedure NOPR, DOE's proposed test procedure contained an 
optional test method for determining EF at any desired speed on any of 
the specified optional system curves (i.e., Curve A, B, C, or D), along 
with the tested speed and the system curve associated with each energy 
factor value. 81 FR 64580, 64627-64628 (Sept. 20, 2016).
    Regarding the test method for EF, Pentair and APSP both commented 
that table III.21 in the September 2016 DPPP test procedure NOPR (81 FR 
64580, 64628; Sept. 20, 2016) used inconsistent terminology to specify 
the flow terms for system curves A, B, C, and D and recommended that 
the terms be reported consistently as shown in table 4 of the September 
2016 DPPP test procedure NOPR (Id. at 64653). (Pentair, No. 11 at p. 6; 
APSP, No. 8 at p. 2) DOE has made the correction in this final rule and 
incorporated the correct table into appendix B.

I. Labeling Requirements

    In the June 2016 DPPP Working Group recommendations, the DPPP 
Working Group recommended that DOE consider whether to require a label 
that would facilitate proper application and include specified 
horsepower information. (Docket No. EERE-2015-BT-STD-0008, No. 82, 
Recommendation #9 at p. 5) To implement the recommendations of the

[[Page 36905]]

DPPP Working Group, DOE proposed in the September 2016 DPPP test 
procedure NOPR to require labeling of all dedicated-purpose pool pumps 
for which the DPPP Working Group recommended test procedures. 81 FR 
64580, 64628-29 (Sept. 20, 2016). That is, DOE proposed that the 
labeling requirements be applicable to:
     Self-priming pool filter pumps less than 2.5 rated 
hydraulic horsepower,\60\
---------------------------------------------------------------------------

    \60\ DOE notes that the DPPP Working Group only recommended 
standards for single-phase self-priming pool filter pumps less than 
2.5 rated hydraulic horsepower. However, the DPPP Working Group 
recommended that the test procedure and reporting requirements would 
still be applicable to single- and three-phase self-priming pool 
filter pumps. Therefore, DOE believes it is appropriate to apply the 
proposed labeling requirements to three-phase pumps.
---------------------------------------------------------------------------

     non-self-priming pool filter pumps less than 2.5 rated 
hydraulic horsepower,
     pressure cleaner booster pumps, and
     waterfall pumps.
    Id.
    For self-priming pool filter pumps, non-self-priming pool filter 
pumps, pressure cleaner booster pumps, and waterfall pumps, DOE 
proposed that each DPPP unit clearly display on the permanent nameplate 
the following information:
     WEF, in kgal/kWh,
     rated hydraulic horsepower,
     DPPP nominal motor horsepower,
     DPPP motor total horsepower, and
     service factor.
    Id.
    DOE also proposed specific requirements regarding the formatting of 
required information on the nameplate and the specific terminology that 
is required to be displayed. DOE proposed that these labeling 
requirements would be applicable to all units manufactured, including 
imported, on the compliance date of any potential energy conservation 
standards that may be set for dedicated-purpose pool pumps. Id.
    ASAP and NRDC submitted a joint written comment supporting the 
labeling requirements proposed in the September 2016 DPPP test 
procedure NOPR. (ASAP and NRDC, No. 12 at p. 2)
    Regarding the proposed formatting of the label, Hayward requested 
clarification regarding the specific details of the label (e.g., font 
size, etc.). (Hayward, Public Meeting Transcript. No. 3 at pp. 93-94; 
Hayward, No. 6 at p. 9) APSP also recommended that all labeling 
details, including font size and label material, comply with UL1081-
2016. (APSP, No. 8 at p. 10) Pentair requested that the pool industry 
be integrally involved in the labeling efforts, pointing out that 
details associated with label formatting and sizing can be critical due 
to other required safety and compliance labeling requirements combined 
with limited available space. (Pentair, No. 11, at p. 4) Hayward 
similarly encouraged DOE to allow use of standard industry nomenclature 
(i.e., ``HP'' for horsepower and ``THP'' for total horsepower) due to 
limited space available on the product for labels. (Hayward, No. 6 at 
p. 9) Hayward also sought confirmation that the information required 
may be provided on separate labels/data plates and is not required to 
be co-located on one label or data plate. (Hayward, No. 6 at p. 9)
    Hayward also objected to listing three separate horsepower values 
saying it will cause confusion and not support the goal of having the 
correctly sized, most energy efficient pump used in all applications. 
As an alternative, Hayward support listing only the total horsepower on 
any DPPP label. (Hayward, No. 6 at p. 9) Similarly, APSP requested 
that, based on its recommendations regarding horsepower (see section 
III.G.1.b), only total horsepower and not nominal motor horsepower or 
service factor be listed on the label, consistent with requirements in 
ANSI/APSP/ICC 15a-2013. (APSP, No. 8 at pp. 9-10) Nidec commented 
similarly. (Nidec, No. 10 at p. 5)
    APSP and Pentair commented that while use of hydraulic horsepower 
for the purposes of sizing is acceptable, use of this value on a label 
would cause significant confusion in the marketplace and recommended it 
not be included on the pump label.\61\ (APSP, No. 8 at pp. 7-8; 
Pentair, No. 11 at p. 3) Zodiac similarly commented that so much 
information on the label my cause confusion during field installation 
and may compromise proper installation of the pump. (Zodiac, No. 13 at 
p. 3) However, Zodiac did not provide a suggested alternative.
---------------------------------------------------------------------------

    \61\ Note that separately APSP presented a recommendation for 
required nameplate information that did include rated hydraulic 
horsepower. (APSP, No. 8 at pp. 9-10)
---------------------------------------------------------------------------

    Hayward, APSP, and Zodiac expressed opposition to a requirement 
that labeling include a specific WEF result, stating that such 
designation may disadvantage some manufacturers and cause confusion in 
the marketplace when dissimilar pumps are incorrectly compared. 
(Hayward, No. 6 at p. 9; APSP, No. 8 at pp. 9-10; Zodiac, No. 13 at p. 
3) Zodiac also stated that the WEF result may confuse or contradict 
ENERGY STAR ratings. (Zodiac, No. 13 at p. 3) Hayward and APSP also 
commented that the required label should only state ``meets DOE WEF 
requirement.'' (Hayward, No. 6 at p. 9; APSP, No. 8 at p. 9)
    APSP and Hayward recommended that all labeling requirements be 
removed for three-phase products, as they are out of scope of the final 
ASRAC working group term sheet. (APSP, No. 8 at p. 10; Hayward, No. 6 
at p. 9)
    As discussed previously, DOE's proposal in the September 2016 DPPP 
test procedure NOPR contained details regarding the font size, spacing, 
and formatting of the required label, as well as when such label would 
be required to be applied. As proposed in the September 2016 DPPP test 
procedure NOPR, all orientation, spacing, type sizes, typefaces, and 
line widths to display this required information must be the same as or 
similar to the display of the other performance data on the pump's 
permanent nameplate. For this reason, DOE believes that it is not 
necessary to specify that the labeling requirements comply with UL1081-
2016, as requested by APSP, or to have additional industry involvement 
beyond the comment period on the NOPR, as requested by Pentair, given 
that the manufacturers already have the option to individually 
determine the details of the label formatting. In response to Hayward's 
suggestion regarding use of common industry abbreviations, DOE notes 
that the use of ``hp'' for horsepower was already allowed in DOE's 
proposed labeling requirements. However, in light of Hayward's 
comments, DOE has modified its proposal to also allow for the 
abbreviation of total horsepower as THP.
    Given the modified requirements for service factor and motor total 
horsepower discussed in section III.G.1.b, DOE agrees with Hayward, 
APSP, and Nidec, that DPPP nominal motor horsepower and DPPP service 
factor do not need to be on the label. In addition, DOE agrees with 
APSP and Pentair that, while hydraulic horsepower is necessary in 
certification reporting and for compliance with standards, this 
information is not used by consumers and does not need to be on the 
label.
    With regard to Hayward, APSP, Zodiac's opposition to including the 
WEF value on the label, DOE believes that it is especially important to 
clearly and consistently communicate the performance of dedicated-
purpose pool pumps using the DOE metric in order to provide customers 
with standardized, comparable information to inform purchasing 
decisions and is retaining the requirement to include the WEF

[[Page 36906]]

value on the DPPP label. With regard to Zodiac's comment regarding the 
consistency of WEF and ENERGY STAR EF information, DOE responds that, 
as discussed in section III.H, as of 180 days after the publication of 
this final rule all representations of WEF, EF, and other 
representations of dedicated-pool pump performance must be made in 
accordance with the adopted DOE test procedure and, therefore, any EF 
values will be consistent with the tested WEF result for that pool pump 
in that they will be based on the same test data. However, regarding 
the confusion between EF and WEF values, DOE is clarifying in this 
final rule that, as of the compliance date of any energy conservation 
standard for dedicated-purpose pool pumps, all manufacturers and rating 
programs must transition to the new WEF metric and representations of 
EF will no longer be allowed. DOE believes this will resolve the 
confusion Zodiac is concerned with. Representations of EF and WEF are 
discussed in more detail in section III.H.
    Therefore, in this final rule DOE is adopting labeling provisions 
that require dedicated-purpose pool pumps subject to the test procedure 
to be labeled only with WEF and DPPP motor total horsepower. In 
response to Hayward's request that the required information not be 
required to be co-located on one label or data plate, DOE believes, 
given the reduced labeling requirements adopted in this final rule as 
compared to the NOPR proposal, that it is entirely reasonable to 
require that these values appear on the pump's permanent nameplate.
    In response to APSP and Hayward's recommendation that labeling 
requirements not apply to three-phase products, DOE notes that this 
proposal is not consistent with the recommendations of the DPPP Working 
Group. The June 2016 DPPP Working Group recommendations only specified 
that standards should not apply to three-phase self-priming pool filter 
pumps. (Docket No. EERE-2015-BT-STD-0008, No. 82 Recommendations #3 at 
p. 2) Therefore, DOE believes that requiring labels for three-phase 
pumps is consistent with requiring them to be subject to the test 
procedure and reporting requirements, as recommended by the DPPP 
Working Group.

J. Replacement DPPP Motors

    DOE understands that DPPP motors typically require replacement more 
frequently than DPPP bare pumps and, thus, replacement DPPP motors are 
often distributed in commerce to be paired with an existing, 
appropriate DPPP bare pump in the field. DOE does not intend to 
regulate replacement DPPP motors, because they do not (by themselves) 
meet the definition of a dedicated-purpose pool pump. However, DOE 
believes that end-users and manufacturers may benefit from having a 
method to determine an applicable WEF for replacement DPPP motors. This 
method could allow replacement motor manufacturers to label their 
products and/or utilities or efficiency programs to encourage the sale 
of replacement DPPP motors, which could maintain or increase the 
savings of the dedicated-purpose pool pump, as installed in the field.
    For those reasons, DOE proposed in the September 2016 DPPP test 
procedure NOPR an optional method to determine the WEF for replacement 
DPPP motors. 81 FR 64580, 64629 (Sept. 20, 2016). Specifically, under 
this method, the replacement motor would be paired with an appropriate 
DPPP bare pump and the combination would be subject to the DOE test 
procedure for that dedicated-purpose pool pump, based on the DPPP 
variety and speed configuration. Id.
    In the September 2016 DPPP test procedure NOPR, DOE recognized that 
replacement DPPP motors may be offered for sale or advertised to be 
paired with multiple DPPP bare pumps. Furthermore, each combination of 
a DPPP motor and a DPPP bare pump may have a different WEF, as each 
bare pump may affect the WEF rating. Therefore, DOE proposed in the 
September 2016 DPPP test procedure NOPR that the WEF for each 
replacement DPPP motor and bare pump pairing be determined separately. 
However, consistent with DOE's treatment of all equipment, DOE would 
allow manufacturers to group similar replacement motor-bare pump 
pairings within a given replacement DPPP motor rating to minimize 
testing burden, while still ensuring that the rating is representative 
of minimum efficiency or maximum energy consumption of the group. DOE 
also proposed that replacement DPPP motor manufacturers would be 
required to make a statement, along with any advertised WEF value, 
regarding the specific DPPP bare pump to which the WEF value applies. 
If no specific DPPP bare pumps were listed in the manufacturer 
literature or otherwise along with any WEF representation, then the WEF 
value would be assumed to be applicable to any and all possible DPPP 
bare pumps. Id.
    During the September 2016 DPPP test procedure NOPR public meeting, 
CA IOUs stated that if the worst performing pump method were to be 
utilized for replacement motors, the bare pumps considered would have 
to be specified in order to determine which was the worst performing. 
(CA IOUs, Public Meeting Transcript, No. 3 at p. 80) As such, CA IOUS 
proposed that if manufacturers test the replacement motors, the test 
report or result include the range of products that were included in 
the test. (CA IOUs, Public Meeting Transcript, No. 3 at pp. 82-84)
    DOE acknowledges CA IOUs' concern in unambiguously identifying the 
replacement DPPP motor and bare pump combination on which any WEF value 
was based. However, as DOE is proposing this as an optional procedure, 
DOE did not propose any standard or reporting requirements for 
replacement DPPP motors. In addition, the manufacturer of the 
replacement DPPP motor may be different than the manufacturer of the 
dedicated-purpose pool pump. For this reason, DOE does not believe that 
including such information in the list of optional information DPPP 
manufacturers may submit when certifying products to DOE would be 
appropriate. As reporting of replacement DPPP motor WEF information 
would have to be done as a separate certification report and is not 
based on compliance with any standard, DOE does not believe collecting 
such information is warranted at this time. The purpose of the 
procedure is simply to provide a standardized way to determine WEF for 
replacement DPPP motors.
    ASAP, CA IOUs, CEC, and NRDC commented to support the inclusion of 
this optional test method for DPPP replacement motors. (ASAP and NRDC, 
No. 12 at p. 2; CA IOUs, No. 9 at p. 2; CEC, No. 7 at p. 2) ASAP and 
NRDC and CEC stated that the test method could provide data to guide 
consumers and support utility and efficiency programs that seek to 
improve the efficiency of dedicated-purpose pool pumps already in use. 
(ASAP and NRDC, No. 12 at p. 2; CEC, No. 7 at p. 2)
    In written comments, Pentair also supported the optional test 
method for DPPP replacement motors. However, Pentair stated its belief 
that the DPPP replacement motor testing should be mandatory, to protect 
against pool owners pairing low efficiency replacement motors with kit 
pumps. (Pentair, No. 11 at p. 4) CA IOUs also believe that a national 
standard is needed for DPPP replacement motors. (CA IOUs, No. 9 at p. 
2)
    Conversely, in written comments, APSP, Hayward, and Nidec opposed 
DOE's proposed optional test method for replacement DPPP motors. (APSP, 
No. 8 at pp. 10-11; Hayward, No. 6 at

[[Page 36907]]

p. 9; Nidec, No. 10 at p. 6) Hayward noted that such motors were not 
discussed by the DPPP Working Group. (Hayward, No. 6 at p. 9) Hayward 
and Nidec also believe that the methodology presented by DOE is not 
practical and does not ensure compliance. (Hayward, No. 6 at p. 9; 
Nidec, No. 10 at p. 6) Nidec suggested that replacement DPPP motors be 
regulated through an expansion in small motor regulations. (Nidec, No. 
10 at p. 6)
    DOE appreciates the support of ASAP, CA IOUs, CEC, and NRDC. In 
response to Pentair and CA IOU's request to adopt requirements for 
replacement DPPP motors, DOE understands that there is a potential for 
pool owners or installation contractors to purchase and pair a pump wet 
end with a low-efficiency replacement motor. However, DOE notes that 
mandatory requirements for DPPP replacement motors are outside the 
scope of this rulemaking, as this rulemaking pertains only to pumps as 
defined in 10 CFR 431.462. DOE proposed an optional test method for 
replacement motors because of this limitation on rulemaking scope. DOE 
notes that in the future it could consider mandatory requirements for 
replacement DPPP motors as part of a rulemaking specifically addressing 
such motors.
    DOE understands Hayward's and Nidec's concerns and agrees that this 
specific proposal was not discussed at length by the DPPP Working 
Group. However, DOE reiterates that the test method contained in the 
September 2016 DPPP test procedure NOPR is an optional test method that 
manufacturers of DPPP motors may use at their discretion; there is no 
associated certification or compliance criteria for replacement DPPP 
motors. That is, replacement DPPP motors would not be required to meet 
any energy conservation standard set for dedicated-purpose pool pumps. 
The purpose of the test method is solely to provide standardized 
information to consumers regarding the efficiency and performance of 
replacement DPPP motors and provide an opportunity for efficiency 
programs to incentivize the application of more efficient replacement 
DPPP motors. In response to Hayward's and Nidec's concern that the test 
method is impractical, DOE believes that the proposed test method 
presents a reasonable path to determine the representative WEF score 
for replacement DPPP motors and notes that Hayward did not provide an 
alternative suggestion. In response to Nidec's suggestion that 
replacement DPPP motors be regulated through rules crafted specifically 
for small motors, DOE notes that, as stated previously, there are no 
regulatory requirements pertaining to the optional motor test method. 
Rather, the optional test method proposed for DPPP motors is intended 
to provide information to consumers and efficiency incentive programs 
regarding which motors will conserve energy in a DPPP-specific 
application, and DOE believes this information would not be made 
available through small motor regulations. As noted previously, this 
does not preclude DOE from considering mandatory requirements for 
replacement DPPP motors as part of a rulemaking specifically addressing 
such motors.
    Hayward also recommended clarifying that replacement motors 
identical to the original motor that was used to test and qualify the 
DPPP model (only varying in nomenclature for marketing purposes, such 
as service part number) should be permitted to make representations of 
WEF when sold for use with the specific bare pump, without the need for 
additional testing. (Hayward, No. 6 at p. 9) DOE agrees with Hayward's 
suggestion. DOE believes that so long as the testing of a given DPPP 
motor and bare pump pair was performed consistent with DOE's test 
procedure for replacement DPPP motors, the rating will be accurate. As 
such, the resultant WEF score can be applied to the tested replacement 
DPPP motor when offered for sale with the tested DPPP bare pump and 
would be identical to that applied to the DPPP model comprised of that 
DPPP motor and bare pump.

K. Certification and Enforcement Provisions for Dedicated-Purpose Pool 
Pumps

    DOE must provide uniform methods for manufacturers to determine 
representative values of energy- and non-energy-related metrics, for 
each basic model. See 42 U.S.C. 6314(a)(2). These values are used when 
making public representations and when determining compliance with 
prescribed energy conservation standards. DOE proposed in the September 
2016 DPPP test procedure NOPR that DPPP manufacturers use a statistical 
sampling plan consistent with the sampling plan for pumps that is 
currently specified at 10 CFR 429.59 to determine representative values 
of WEF and other energy-related metrics. 81 FR 64580, 64629 (Sept. 20 
2016). Manufacturers would use these sampling plans to determine the 
representative values of WEF and other metrics necessary to demonstrate 
compliance with the adopted energy conservation standards for 
dedicated-purpose pool pumps. In addition, DOE commonly specifies 
enforcement procedures that DOE uses to verify compliance of a basic 
model. Sections, III.K.1, III.K.2, and III.K.3 discuss DOE's sampling 
plan, certification requirements, and enforcement provisions for 
dedicated-purpose pool pumps, respectively.
1. Sampling Plan
    DOE provides, in subpart B to 10 CFR part 429, sampling plans for 
all covered equipment. For dedicated-purpose pool pumps, DOE proposed 
in the September 2016 DPPP test procedure NOPR to adopt statistical 
sampling plans for WEF, EF, and other energy-related metrics similar to 
those adopted for pumps. 81 FR 64580, 64630 (Sept. 20, 2016). These 
sampling plans generally require a sample of sufficient size such that 
the representative value of WEF, EF, or any other energy consumption 
metric of a DPPP basic model is less than or equal to the lower of: (A) 
The lower 95 percent confidence limit divided by 1.05 or (B) the mean 
of the sample. DOE also proposed similar provisions for quantities, 
such as pump input power, for which consumers would favor lower values. 
See 10 CFR 429.59(a)(1)(ii).
    In addition to energy-related metrics, DOE also noted that the 
rated hydraulic horsepower, DPPP nominal motor horsepower, DPPP motor 
total horsepower, service factor, and true power factor are important 
characteristics for dedicated-purpose pool pumps that must be reported 
for each DPPP basic model based on the sampling plan discussed above. 
Therefore, DOE also proposed that DPPP nominal motor horsepower, DPPP 
motor total horsepower, service factor, and true power factor for each 
DPPP basic model be determined based on the mean of the applicable test 
results, for each metric, from all the tested units that serve as the 
basis for the rating for that basic model. 81 FR 64580, 64630 (Sept. 
20, 2016).
    In written comments, Hayward and APSP requested clarification of 
sampling plan and record keeping requirements for certain motor 
characteristics. Specifically, APSP and Hayward asked if DOE expects 
DPPP manufacturers to establish, maintain, and retain underlying test 
data for nominal motor horsepower, motor total horsepower, and motor 
service factor for 2 years from the date on which the model is no 
longer distributed in commerce or if this information would be the 
responsibility of the individual motor manufacturers. (APSP, No. 8 at 
p.

[[Page 36908]]

9; Hayward, No. 6 at pp. 7-8) In addition, as noted in section III.H, 
Hayward expressed concern over DOE's requirements being in conflict 
with other industry programs, especially those regarding determination 
of EF. (Hayward, No. 6 at p. 1)
    In response to Hayward, DOE notes that while motor manufacturers 
may conduct testing of motors, it is the responsibility of the DPPP 
manufacturer to retain the underlying test data. As discussed in 
section III.G.1.b, DOE is adopting test methods for determination of 
motor horsepower characteristics consistent with those currently used 
in the industry. However, given the suggestion from interested parties 
that DOE only require listing DPPP motor total horsepower on the label 
(see section III.I), DOE is withdrawing the proposal to establish 
sampling plans for DPPP nominal motor horsepower and DPPP service 
factor and adopting a sampling plan for DPPP motor total horsepower 
only.
    Regarding potential conflict with industry programs, which DOE 
believes relates primarily to the sampling plan (as other provisions 
are quantitatively consistent), in this final rule, DOE limits the 
sampling plan to only metrics necessary for DOE's test procedure, 
standard, and labeling requirements (i.e., WEF, rated hydraulic 
horsepower, and DPPP motor total horsepower). DOE has removed the 
sampling plan requirements for EF and other motor horsepower metrics. 
DOE is adopting the other sampling provisions proposed in the September 
2016 DPPP test procedure NOPR without modification.
    In written comments, APSP asked whether small modifications to the 
``basic model'' require new samples to be tested, and if so, if there 
is a defined threshold regarding what change would require a new sample 
to be tested. (APSP, No. 8 at pp. 10-11) DOE believes that APSP is 
asking about how changes to an individual model's design impact the 
represented value for a basic model. If any design changes to an 
individual model that is part of a basic model result in a more 
consumptive or less efficient represented value, then the individual 
model must be retested and the represented value must be revised based 
on the results of the retesting.
2. Certification Requirements
    Paragraph (b) of 10 CFR 429.59 contains the certification 
requirements for certain styles of pumps for which DOE adopted test 
procedures and standards in the January 2016 general pumps test 
procedure and ECS final rules. 81 FR 4086 (Jan. 25, 2016); 81 FR 4368 
(Jan. 26, 2016). Because dedicated-purpose pool pumps are a style of 
pump, DOE proposed in the September 2016 DPPP test procedure NOPR to 
amend 10 CFR 429.59 to include the reporting requirements for 
dedicated-purpose pool pumps. 81 FR 64580, 64630-64632 (Sep. 20, 2016). 
Specifically, DOE proposed that the general certification report 
requirements contained in 10 CFR 429.12 would apply to dedicated-
purpose pool pumps as they do to other styles of pumps, including 
general pumps. However, because dedicated-purpose pool pumps have a 
unique test procedure and metric from general pumps, DOE proposed 
unique certification requirements for dedicated-purpose pool pumps that 
require manufacturers to supply certain additional information to DOE 
in certification reports to demonstrate compliance with any energy 
conservation standards that DOE may set. Id.
    Specifically, DOE proposed that the following items be included in 
certification reports and made public on DOE's Web site:
     WEF in kilogallons per kilowatt-hour (kgal/kWh);
     rated hydraulic horsepower in horsepower (hp);
     maximum speed of rotation in revolutions per minute (rpm);
     dedicated-purpose pool pump nominal motor horsepower in 
horsepower (hp);
     dedicated-purpose pool pump motor total horsepower in 
horsepower (hp);
     dedicated-purpose pool pump service factor 
(dimensionless);
     the speed configuration for which the pump is being rated 
(i.e., single-speed, two-speed, multi-speed, or variable-speed);
     for self-priming pool filter pumps, non-self-priming pool 
filter pumps, and waterfall pumps, the maximum head in feet; and
     for self-priming and non-self-priming pool filter pumps: 
The vertical lift and true priming time for the DPPP model and a 
statement regarding whether the pump is certified with NSF/ANSI 50-
2015. Id.
    In the June 2016 DPPP Working Group recommendations, the DPPP 
Working Group also recommended that DOE require reporting of true power 
factor at all applicable test procedure load points in the public 
information provided in the certification report for all dedicated-
purpose pool pumps to which the test procedure is applicable (i.e., 
self-priming and non-self-priming pool filter pumps, waterfall pumps, 
and pressure cleaner booster pumps). (Docket No. EERE-2015-BT-STD-0008, 
No. 82, Recommendation #7 at p. 4) As such, DOE proposed that, for all 
dedicated-purpose pool pumps to which the test procedure is applicable, 
true power factor be reported at all applicable test procedure load 
points in the certification report and be made public on DOE's Web 
site. 81 FR 64580, 64630-64632 (Sep. 20, 2016).
    In addition, as discussed in section III.B.7, the DPPP Working 
Group recommended specific prescriptive requirements for dedicated-
purpose pool pumps distributed in commerce with freeze protection 
controls to ensure freeze protection controls on dedicated-purpose pool 
pumps only operate when necessary and do not result in unnecessary, 
wasted energy use. Specifically, the DPPP Working Group recommended 
that all dedicated-purpose pool pumps distributed in commerce with 
freeze protection controls be shipped either:
    (1) With freeze protection disabled or
    (2) with the following default, user-adjustable settings:
    a. The default dry-bulb air temperature setting is no greater than 
40 [deg]F; and
    b. The default run time setting shall be no greater than 1 hour 
(before the temperature is rechecked); and
    c. The default motor speed shall not be more than \1/2\ of the 
maximum available speed.
    (Docket No. EERE-2015-BT-STD-0008, No. 82, Recommendation #6A at p. 
4)
    Relatedly, the DPPP Working Group recommended that, in order to 
certify compliance with such a requirement, DPPP manufacturers be 
required to make a statement certifying compliance to the applicable 
design requirement and make available publicly as part of their 
literature the details by which they have met the applicable design 
standard. (Docket No. EERE-2015-BT-STD-0008, No. 82, Recommendation #6B 
at p. 4) The DPPP Working Group specifically recommended that, as part 
of certification reporting, manufacturers must include the default dry-
bulb air temperature setting (in [deg]F), default run time setting (in 
minutes), and default motor speed (in rpm). (Docket No. EERE-2015-BT-
STD-0008, No. 82, Recommendation #6A at p. 4) Therefore, consistent 
with recommendations of the DPPP Working Group, DOE proposed that, for 
dedicated-purpose pool pumps distributed in commerce with freeze 
protection controls enabled, the certification report also include the 
default dry-bulb air temperature setting (in [deg]F), default run time 
setting (in minutes), and default motor speed (in

[[Page 36909]]

rpm). 81 FR 64580, 64630-64632 (Sep. 20, 2016).
    The DPPP Working Group also recommended that DOE include a 
verification procedure in case there was ever an issue regarding 
whether a product distributed in commerce actually had such features. 
(Docket No. EERE-2015-BT-STD-0008, No. 82, Recommendation #6A at p. 4) 
The verification test is discussed in more detail in section III.K.3.
    Finally, for integral cartridge-filter and sand-filter pool pumps, 
the DPPP Working Group recommended DOE consider only a prescriptive 
standard, which requires such pumps be distributed in commerce with 
pool pump timers. (Docket No. EERE-2015-BT-STD-0008, No. 51, 
Recommendation #2B at pp. 1-2) Relatedly, the DPPP Working Group also 
recommended a definition for pool pump timer that describes the 
specific features and operational characteristics that applicable pool 
pump timers must contain in order to comply with the prescriptive 
standard. The recommended definition defines pool pump timer as a pool 
pump control that automatically turns off a dedicated-purpose pool pump 
after a run-time of no longer than 10 hours. As such, for these DPPP 
varieties, DOE proposed that the certification report must contain the 
maximum run-time of the pool pump control with which the integral 
cartridge-filter or sand-filter pump is distributed in commerce. 81 FR 
64580, 64630-64632 (Sep. 20, 2016).
    In addition to the required elements, DOE recognizes that other 
DPPP characteristics may provide useful information to inform consumers 
or support programs related to dedicated-purpose pool pumps. To provide 
additional information to consumers and the market place, DOE proposed 
in the September 2016 DPPP test procedure NOPR that the following 
information may optionally be included in certification reports and, if 
included, would be made public:
     Calculated driver power input and flow rate at each load 
point i (Pi and Qi), in horsepower (hp) and gallons per minute (gpm), 
respectively; and/or
     Energy factor at any desired speed on any of the specified 
optional system curves (i.e., Curve A, B, C, or D), along with the 
tested speed and the system curve associated with each energy factor 
value. 81 FR 64580, 64631-32 (Sept. 20, 2016).
    Although useful to consumers and the public, DOE recognizes that 
manufacturers may incur additional burden conducting the testing for 
and reporting of these additional metrics. DOE reiterates that the 
reporting of these additional metrics will be optional and at the 
discretion of the manufacturer.
    In response to DOE's proposed reporting requirements, ASAP and NRDC 
submitted written comments in support of the certification requirements 
proposed in the September 2016 DPPP test procedure NOPR. (ASAP and 
NRDC, No. 12 at p. 2) DOE appreciates the support of ASAP and NRDC.
    During the September 2016 DPPP test procedure NOPR public meeting, 
Hayward inquired if they have a pump that meets acceptable NSF priming 
criteria, how this should be reported along with the WEF value. 
(Hayward, Public Meeting Transcript, No. 3 at p. 74) Additionally, in 
written comments, Hayward and APSP commented that the vertical lift and 
true priming time fields should only be applicable to self-priming pool 
filter pumps that are not certified with NSF/ANSI 50-2015. (Hayward, 
No. 6 at p. 10; APSP, No. 8 at p. 11)
    As noted in the September 2016 DPPP test procedure NOPR, for self-
priming and non-self-priming pool filter pumps, the certification 
report is required to include the vertical lift and true priming time 
for the DPPP model and a statement regarding whether the pump is 
certified with NSF/ANSI 50-2015. However, in light of Hayward and 
APSP's concern, DOE recognizes that these requirements are only 
necessary and relevant for self-priming pool filter pumps. In addition, 
consistent with Hayward and APSP's request, DOE agrees that a statement 
that the self-priming pool filter pump is certified with NSF/ANSI 50-
2015 is sufficient to demonstrate compliance with DOE's definition for 
self-priming pool filter pump. Therefore, in this final rule, DOE is 
modifying the certification reporting requirements such that only self-
priming pool filter pumps that are not certified with NSF/ANSI 50-2015 
need provide the vertical lift and true priming time for the DPPP 
model.
    In written comments, Hayward and APSP requested that DOE explain 
why maximum head (``dead head'') is listed and recommended removing it, 
as they did not see the need to list it. (Hayward, No. 6 at p. 10; 
APSP, No. 10 at p. 11) In response, DOE clarifies that maximum head is 
necessary to differentiate waterfall pumps from self-priming and non-
self-priming pool filter pumps. As described in section III.B.4.a, 
section III.G.3, and the September 2016 DPPP test procedure NOPR, 
waterfall pumps are, by definition, pool filter pumps with maximum head 
less than or equal to 30 feet, and a maximum speed less than or equal 
to 1,800 rpm. Therefore, in order to unambiguously distinguish 
waterfall pumps from other varieties of pool filter pumps, DOE 
established a specific and repeatable method for determining maximum 
head of pool filter pumps (discussed in section III.G.3). DOE requires 
reporting of the maximum head, determined in accordance with the test 
procedure for self-priming pool filter pumps, non-self-priming pool 
filter pumps, and waterfall pumps, to ensure that such pumps are 
appropriately categorized into the correct equipment class.
    Hayward and APSP also recommended that, for dedicated-purpose pool 
pumps with freeze protection controls shipped disabled, the default 
dry-bulb air temperature setting, default run time setting, and default 
motor speed setting should not have to be reported. (Hayward, No. 6 at 
p. 10; APSP, No. 10 at p. 11) In response, DOE notes that Hayward and 
APSP's suggestion is consistent with the proposal in the September 2016 
DPPP test procedure NOPR. 81 FR 64580, 64645 (Sept. 20, 2016). As such, 
in this final rule, DOE is adopting the proposal in the September 2016 
DPPP test procedure NOPR that in the certification report all 
dedicated-purpose pool pumps must provide a statement regarding if 
freeze protection is shipped enabled or disabled, but only dedicated-
purpose pool pumps distributed in commerce with freeze protection 
controls enabled must provide the default dry-bulb air temperature 
setting (in [deg]F), default run time setting (in minutes), and default 
motor speed (in rpm).
    During the September 2016 DPPP test procedure NOPR public meeting, 
CA IOUs recommended clarifying that the maximum run time for integrated 
cartridge-filter and sand-filter pumps referred to the maximum run time 
without resetting the timer. (CA IOUs, Public Meeting Transcript, No. 3 
at p. 90) In response, DOE acknowledges CA IOUs concern that the 
maximum run time in the field could be extended by resetting the timer. 
However, DOE believes that the maximum run time of the model is the 
maximum time interval for which the timer can be set to run and that it 
is implied that such does not account for resetting of the timer, as it 
is a physical and unambiguous characteristic of the equipment. 
Therefore, DOE agrees with CA IOUs regarding the intent of the 
statement, but does not believe such clarification is necessary.
    APSP and Hayward also requested confirmation that the test 
procedure to determine EF is optional and neither it

[[Page 36910]]

nor data relating to it will be required to be provided or certified to 
DOE. (APSP, No. 8 at p. 9; Hayward, No. 6 at p. 8) Similarly, Zodiac 
also commented that optional items, such as EF, pump efficiency, 
overall efficiency, driver power input, and/or pump power output, 
should remain optional and up to the manufacturer to present. (Zodiac, 
No. 13 at p. 3)
    Regarding APSP, Hayward, and Zodiac's comments with respect to EF 
and other optional tested values (i.e., pump efficiency, overall 
efficiency, driver power input, and/or pump power output), DOE 
reiterates that the EF test procedure proposed was optional in that 
manufacturers may decline to make any representations of EF, but that 
if made, all representations of relevant metrics, including EF, would 
need to be based on the DOE test procedure 180 days after publication 
of this final rule in the Federal Register. However, EF, pump 
efficiency, overall efficiency, driver power input, and/or pump power 
output are not required to be reported to DOE.
    In addition, as discussed in section III.F, DOE received several 
comments from interested parties regarding the testing and 
representation of energy factor and consistency with other programs. To 
respond to the concerns of interested parties and clarify the 
applicability of DPPP metrics, DOE, in this final rule, is adopting two 
appendices that are applicable before (appendix B) and on or after 
(appendix C) July 19, 2021, the compliance date of the adopted energy 
conservation standards for this equipment. As a result of the confusion 
regarding representations of energy factor and the lack of comments 
supporting the optional reporting of energy factor to DOE, DOE is not 
adopting the proposal to optionally list any tested energy factor 
values in the certification report submitted to DOE. Specifically, DOE 
is not including EF at any desired speed on any of the specified 
optional system curves (i.e., Curve A, B, C, or D), along with the 
tested speed and the system curve associated with each energy factor 
value in the certification report.
    DOE did not receive any other comments or suggestions regarding the 
certification reporting requirements for dedicated-purpose pool pumps. 
As such, DOE is adopting, in this final rule, the certification 
reporting requirements as proposed in the September 2016 DPPP test 
procedure NOPR, with the exception of the optional listing of energy 
factor as discussed above. DOE is also clarifying the applicability of 
the certification requirements that are only applicable to certain 
styles of pumps for which DOE adopted test procedures and standards in 
the January 2016 general pumps test procedure and ECS final rules. 81 
FR 4086 (Jan. 25, 2016); 81 FR 4368 (Jan. 26, 2016). DOE notes that, as 
specified in paragraph (a) of 10 CFR 429.12, the certification 
requirements for covered products and equipment, including those 
discussed in this final rule, are only applicable to equipment subject 
to an applicable energy conservation standard set forth in 10 CFR part 
430 or 431. Therefore, the certification requirements established in 
this final rule will only be required on and after July 19, 2021, the 
compliance date for energy conservation standards for dedicated-purpose 
pool pumps.
3. Enforcement Provisions
    Enforcement provisions govern the process DOE will follow when 
performing its own assessment of basic model compliance with standards, 
as described under subpart C of 10 CFR part 429. Specifically, subpart 
C describes the notification requirements, legal processes, penalties, 
specific prohibited acts, and testing protocols related to testing 
covered equipment to determine or verify compliance with standards. 10 
CFR 429.102-429.134. DOE notes that the same general enforcement 
provisions contained in subpart C of 10 CFR part 429 will be applicable 
to dedicated-purpose pool pumps.
    Related to enforcement testing of dedicated-purpose pool pumps, as 
specified in 10 CFR 429.110(e), DOE proposed in the September 2016 DPPP 
test procedure NOPR to conduct the applicable DPPP test procedure, to 
determine the WEF for tested DPPP models. 81 FR 64580, 64632 (Sept. 20, 
2016). In addition, DOE proposed to use, when determining performance 
for a specific basic model, the enforcement testing sample size, 
calculations, and procedures laid out in appendix A to subpart C of 10 
CFR part 429 for consumer products and certain high-volume commercial 
equipment. These procedures, in general, provide that DOE will test an 
initial sample of at least 4 units and determine the mean WEF value and 
standard error of the sample. DOE will then compare these values to the 
WEF standard level, once adopted, to determine the compliance of the 
basic model or if additional testing (up to a total of 21 units) is 
required to make a compliance determination with sufficient confidence. 
DOE also proposed to clarify that the provisions at 10 CFR 
429.110(e)(5), which are applicable to general pumps subject to the 
January 2016 general pumps test procedure final rule, are not 
applicable to dedicated-purpose pool pumps. Id.
    In addition, when determining compliance of any units tested for 
enforcement purposes, DOE proposed in the September 2016 DPPP test 
procedure NOPR to adopt provisions that specify how DOE would determine 
the rated hydraulic horsepower at maximum speed on the reference curve 
for determining the appropriate test method and standard level for any 
tested equipment (if applicable). Specifically, DOE proposed to perform 
the same test procedure for determining the rated hydraulic horsepower 
at maximum speed on the reference curve specified by the test procedure 
for each DPPP variety (see section III.D) on one or more units of each 
model selected for testing. DOE proposed that, if the rated hydraulic 
horsepower determined through DOE's testing (either the measured rated 
hydraulic horsepower for a single unit sample or the average of the 
measured rated hydraulic horsepower values for a multiple unit sample) 
is within 5 percent of the certified value of rated hydraulic 
horsepower, then DOE will use the certified value of rated hydraulic 
horsepower as the basis for determining the standard level for tested 
equipment. However, if DOE's tested value of rated hydraulic horsepower 
is not within 5 percent of the certified value of rated hydraulic 
horsepower, DOE will use the arithmetic mean of all the rated hydraulic 
horsepower values resulting from DOE's testing when determining the 
standard level for tested equipment. 81 FR 64580, 64632 (Sept. 20, 
2016).
    In addition, DOE proposed to establish similar procedures for 
relevant quantities necessary to differentiate the varieties of pool 
filter pumps: Self-priming pool filter pumps, non-self-priming pool 
filter pumps, and waterfall pumps. Specifically, to differentiate 
waterfall pumps, DOE proposed an enforcement testing procedure for the 
maximum head value. Similarly, to differentiate self-priming and non-
self-priming pool filter pumps, DOE proposed performing the self-
priming capability test and determine the vertical lift and true 
priming time of one or more tested units. DOE proposed tolerances of 5 
percent on the certified values in both of these instances as well. Id.
    Pentair responded that without audit and enforcement, the economic 
effect from the potential costs related to testing (see section IV.B) 
could be low as manufacturers will not feel compelled to re-test 
dedicated-purpose pool pumps. (Pentair, No. 11 at p. 4) DOE responds 
that DOE does conduct

[[Page 36911]]

enforcement testing, as discussed in this section. If a product is 
suspected of not meeting the minimum energy conservation standard, DOE 
has enforcement mechanisms to verify the equipment performance in 
relation to the standard. DOE's burden assessment contained in section 
IV.B reflects the assumption that manufacturers will conduct testing 
and certify equipment in accordance with the test procedure adopted in 
this final rule.
    DOE did not receive any other comments related to DOE's proposal 
related to enforcement testing provisions for WEF, rated hydraulic 
horsepower, maximum head, or self-priming capability. As such, DOE is 
adopting the enforcement testing provisions for WEF, rated hydraulic 
horsepower, and maximum head, as proposed in the September 2016 DPPP 
test procedure NOPR. However, with regard to the enforcement provisions 
to verify the self-priming capability of non-self-priming pool filter 
pumps and self-priming pool filter pumps not certified with NSF/ANSI 
50-2015, DOE notes that, in response to comments from interested 
parties, DOE is removing the requirement to report the vertical lift 
and true priming time of non-self-priming pool filter pumps, as 
discussed in section III.K.2. As DOE's proposed enforcement testing 
provisions included comparing the tested values to the values of 
vertical lift and true priming time certified by the manufacturer to 
determine the validity of the certified values, DOE must adopt 
different criteria for non-self-priming pool filter pumps, as they will 
not have certified values to which DOE can compare the test results. 
Instead, DOE is adopting validity criteria for non-self-priming pool 
filter pumps based on the values of vertical lift and true priming time 
referenced in the definition of non-self-priming pool filter pump. That 
is, DOE will compare the values of vertical lift and true priming time 
obtained from the tested unit(s) to the values of vertical lift and 
true priming time referenced in the definition of non-self-priming pool 
filter pump (i.e., 5.0 feet and 10.0 minutes, respectively). DOE will 
continue to apply the same tolerance of 5 percent so that any non-self-
priming pool filter pump that is not capable of priming to a vertical 
lift of 5.0 feet with a true priming time of less than or equal to 9.5 
minutes (10.0 minutes--5 percent) will continue to be treated as a non-
self-priming pool filter pump, as certified by the manufacturer. DOE 
notes that vertical lift and true priming time are related variables, 
such that the 5 percent tolerance need only be applied to true priming 
time as the independent variable.
    In addition, based on DPPP Working Group recommendations (Docket 
No. EERE-2015-BT-STD-0008, No. 82, Recommendation #6B at p. 4), DOE 
also proposed in the September 2016 DPPP test procedure NOPR a 
procedure to verify the presence and operation of any freeze protection 
controls distributed in commerce with any applicable dedicated-purpose 
pool pump. The proposed procedure starts by installing the DPPP unit in 
a test stand in accordance with HI 40.6-2014 with the pump powered on 
but not circulating water (i.e., the controls are active and the flow 
or speed are set to zero). The temperature measured by the freeze 
protection temperature control would then be gradually decreased by 1 
 0.5 [deg]F every 5.0 minutes, starting at 42  
0.5 [deg]F until the pump freeze protection controls initiate water 
circulation or 38  0.5 [deg]F, whichever occurs first. The 
freeze protection ambient temperature reading and DPPP rotating speed, 
if any, would be recorded after each reduction in temperature and 
subsequent stabilization. 81 FR 64580, 64633 (Sept. 20, 2016).
    Under DOE's proposed test procedure, if the DPPP freeze protection 
controls do not initiate water circulation at a temperature of 38 
 0.5 [deg]F, as measured by the freeze protection ambient 
temperature sensor, the test would conclude and the dedicated-purpose 
pool pump would be deemed compliant. If the freeze protection controls 
initiate water circulation, the temperature would be increased to 42 
 0.5 [deg]F and the dedicated-purpose pool pump would be 
allowed to run for at least 30.0 minutes. After 30.0 minutes, the 
freeze protection ambient temperature and rotating speed, if any, would 
be recorded again. If the dedicated-purpose pool pump initiated water 
circulation at a temperature greater than 40 [deg]F, if the dedicated-
purpose pool pump is still circulating water after 30.0 minutes of 
operation at 42  0.5 [deg]F, or if rotating speed for 
freeze protection is greater than one-half of the maximum rotating 
speed of the DPPP model, as certified by the manufacturer, that DPPP 
model would be deemed to not comply with the stated design requirement 
for freeze protection controls. Id.
    In written comments, ASAP and NRDC expressed appreciation that DOE 
developed a verification procedure that can be used to verify whether a 
DPPP shipped with freeze protection controls meets the freeze 
protection certification requirements promulgated in this rule. (ASAP 
and NRDC, No. 12 at pp. 2-3) DOE appreciates the support of ASAP and 
NRDC.
    During the September 2016 DPPP test procedure NOPR public meeting, 
Pentair raised a concern that the default run-time setting in the 
freeze protection requirements recommended by the DPPP Working Group is 
no greater than an hour, but the test procedure stops after 30.0 
minutes. (Pentair, Public Meeting Transcript, No. 3 at p. 101)
    In response, DOE agrees with Pentair that the time requirement in 
the freeze protection enforcement testing procedure should be 60.0 
minutes, rather than the 30.0 minutes proposed in the September 2016 
DPPP test procedure NOPR, consistent with the recommendations of the 
DPPP Working Group. Therefore, in this final rule, DOE is updating the 
procedure to allow 60.0 minutes of operation before the freeze 
protection ambient temperature and rotating speed, if any, will be 
recorded again.
    In written comments, APSP and Pentair questioned why the dry-bulb 
temperature was selected as the measurement to determine temperature. 
APSP and Pentair commented that few if any of the products in the 
market use dry-bulb temperature sensors to initiate freeze protection 
controls. (APSP, No. 8 at p. 4; Pentair, No. 11 at p. 2) DOE responds 
that DOE researched the typical controls and sensing mechanisms of 
freeze protection controls when developing the test method. Based on 
DOE's research, the three largest pool pump manufacturers produce 
freeze protection systems that sense the ambient air temperature and 
(if freeze protection is enabled) activate the freeze protection mode 
when the ambient air temperature falls below a certain threshold.\62\ 
On May 19, 2016, the DPPP Working Group discussed using the dry-bulb 
air temperature as one of the key metrics for specifying the 
characteristics of freeze protection controls, and no members of the 
group opposed the use of dry-bulb temperature. (Docket No. EERE-2015-
BT-STD-0008, No. 101 at pp. 105-107) Then, the DPPP Working Group 
recommended that manufacturers include dry-bulb air temperature in 
their certification reports. (Docket No. EERE-2015-BT-STD-0008, No. 82 
Recommendation #6A at p. 4) DOE

[[Page 36912]]

believes that the manufacturers' installation and operation manuals, 
the DPPP Working Group discussions, and the DPPP Working Group 
recommendations provide ample justification for using dry-bulb air 
temperature as a certification requirement for dedicated-purpose pool 
pumps distributed in commerce with freeze protection controls enabled. 
Further, DOE is not aware of other temperature-based criteria that are 
relevant to the activation of freeze protection controls at this time 
and Pentair did not provide an alternative recommendation in their 
comments. If freeze protection controls are developed that activate 
based on alternative temperature criteria (other than dry-bulb air 
temperature), DOE may consider modifying the enforcement test and any 
prescriptive freeze protection control requirements at that time.
---------------------------------------------------------------------------

    \62\ Several operation manuals for pool control systems note 
that freeze protection is triggered by air temperature. See, for 
example: Pentair. Intellitouch Quick-Start Manual. 2004. 
www.pentairpool.com/pdfs/IntelliTouchQuickStartIG.pdf. Hayward. Pro 
Logic Operation Manual. 2010. www.hayward-pool.com/pdf/manuals/PLTPM-PL-PS-x&PL-PS-x-VOperationsOct08&Later.pdf.
---------------------------------------------------------------------------

    CA IOUs also raised questions related to the temperature 
measurement apparatus and whether the measurement would be impacted by 
heat created by the DPPP motor. (CA IOUs, Public Meeting Transcript, 
No. 3 at pp. 101-102)
    In response, DOE notes that, as described in the September 2016 
DPPP test procedure NOPR, several methods are allowed to control and 
record the temperature registered by the freeze protection ambient 
temperature sensor. This can be accomplished, depending on the specific 
location and configuration of the temperature sensor, by exposing the 
freeze protection thermocouple to a specific temperature by, for 
example, submerging the thermocouple in a water bath of known 
temperature, adjusting the ambient air temperature of the test chamber 
and measuring the temperature directly at the freeze protection ambient 
temperature sensor location, or other means to simulate and vary the 
ambient temperature registered by the freeze protection temperature 
sensor(s). While DOE acknowledges that, as noted by CA IOUs, the 
temperature measured by the freeze protection ambient temperature 
sensor may be slightly higher than the bulk ambient temperature due to 
localized heating of the sensor from the DPPP motor and controls, DOE 
believes this is representative of operation in the field and the test 
procedure is designed to accommodate this. Based on the recommendations 
of the DPPP Working Group, the freeze protection enforcement test is 
designed to identify DPPP freeze protection controls that initiate 
water circulation when the freeze protection ambient temperature sensor 
registers 40.0 [deg]F or higher, regardless of the bulk ambient 
temperature (which may be slightly cooler than 40.0 [deg]F). DOE notes 
that this is accomplished regardless of the method used to measure and 
control the freeze protection ambient temperature sensor and enables 
the variety of methods discussed previously. If only the bulk ambient 
temperature were measured, the pump would need to be placed in an 
environmental chamber and the temperature of the chamber controlled in 
order to test the freeze protection controls operation. In summary, DOE 
believes that the proposed temperature measurement methods provide a 
representative measure of the ambient temperature measured by the 
freeze protection controls and minimizes burden associated with the 
test by providing a variety of options for measuring and controlling 
the temperature registered by the freeze protection ambient temperature 
sensor. DOE also believes the proposal is consistent with the intent of 
the DPPP Working Group recommendations. Therefore, while DOE 
acknowledges CA IOUs concern, DOE is adopting the specifications 
regarding measurement of the temperature registered by the freeze 
protection ambient temperature sensor as proposed in the September 2016 
DPPP test procedure NOPR.
    APSP and Hayward, in written comments, recommended clarifying that 
enforcement testing of freeze protection is not applicable for units 
shipped with the freeze protection disabled. (APSP, No. 8 at p. 11; 
Hayward, No. 6 at p. 10) In response, DOE clarifies that the provisions 
are primarily intended to verify that the default settings for 
dedicated-purpose pool pumps shipped with freeze protection control 
enabled are within the thresholds recommended by the DPPP Working 
Group. However, DOE notes that the freeze protection control 
enforcement test could also be applied to dedicated-purpose pool pumps 
shipped with freeze protection control disabled to verify the fact that 
the controls were, in fact, disabled. In either case, any dedicated-
purpose pool pumps tested under the freeze protection control 
enforcement test provisions should not be altered from their as-shipped 
settings. DOE is clarifying, in this final rule, that dedicated-purpose 
pool pumps must be tested in the ``as-shipped control settings'' when 
applying the freeze protection control enforcement test. DOE notes that 
the actual design requirements would be established in any ECS 
rulemaking for dedicated-purpose pool pumps and that this verification 
procedure would only be necessary if and when any such requirements are 
established.
    APSP and Hayward also recommended clarifying that the vertical lift 
and true priming time for enforcement testing of the self-priming 
capability test should be 6 minutes or the manufacturers recommended 
prime time, as permitted by NSF/ANSI 50-2015. (APSP, No. 8 at p.11; 
Hayward, No. 6 at p. 10)
    In response, DOE acknowledges that, as defined, self-priming pool 
filter pumps that are certified with NSF/ANSI 50-2015 would have been 
tested based on the criteria in NSF/ANSI 50-2015 that allow for some 
amount of manufacturer discretion with regard to the tested vertical 
lift and true priming time. Specifically, NSF/ANSI 50-2015 allows a 
vertical lift of 5 feet or the manufacturers specified lift, whichever 
is greater, and a true priming time not to exceed 6 minutes or the 
manufacturers recommended time, whichever is greater. However, DOE 
notes that DOE's self-priming capability enforcement testing provisions 
are fundamentally designed to evaluate the self-priming capability of a 
pool filter pump not certified to NSF/ANSI 50-2015 as self-priming to 
verify the appropriate equipment class is applied to each DPPP model. 
As such, the criteria adopted in the definitions of self-priming and 
non-self-priming pool filter pump (see section III.B.3.a) are most 
applicable.
    In addition, DOE notes that, as discussed in the DPPP Working 
Group, DOE's specified criteria of a vertical lift of 5.0 feet and true 
priming time of 10.0 minutes were meant to ensure that any pump 
certified to NSF/ANSI 50-2015 as a self-priming pump would inherently 
meet DOE's criteria for self-priming pumps. That is, based on NSF/ANSI 
criteria, any pump that was certified as self-priming would have a 
vertical lift of at least 5.0 feet, which would also comply with DOE's 
requirement. Regarding the true priming time, as NSF/ANSI 50-2015 
allows for a true priming time of 6 minutes or the manufacturers 
specified time, whichever is greater, it is possible that a pump could 
be certified to NSF/ANSI 50-2015 with a priming time greater than 10.0 
minutes and still be qualified as a self-priming pump. However, the 
DPPP Working Group noted on several occasions that the majority of 
existing self-priming pool filter pumps have true priming times less 
than 10.0 minutes. (Docket No. EERE-2015-BT-STD-0008, No. 95 at pp. 20-
38, 110-113, and 119-128; Docket No. EERE-2015-BT-STD-0008, No. 79 at 
pp. 154-192) However, DOE would only apply the self-priming

[[Page 36913]]

capability enforcement test to pool filter pumps that are not certified 
as self-priming with NSF/ANSI 50-2015 and, therefore, DOE's 
requirements of 5.0 feet and 10.0 minutes are the applicable 
thresholds.

IV. Procedural Issues and Regulatory Review

A. Review Under Executive Order 12866

    The Office of Management and Budget (OMB) has determined that test 
procedure rulemakings do not constitute ``significant regulatory 
actions'' under section 3(f) of Executive Order 12866, Regulatory 
Planning and Review, 58 FR 51735 (Oct. 4, 1993). Accordingly, this 
action was not subject to review under the Executive Order by the 
Office of Information and Regulatory Affairs (OIRA) in the Office of 
Management and Budget (OMB).

B. Review Under the Regulatory Flexibility Act

    The Regulatory Flexibility Act (5 U.S.C. 601 et seq.) requires 
preparation of a regulatory flexibility analysis for any rule that by 
law must be proposed for public comment, unless the agency certifies 
that the rule, if promulgated, will not have a significant economic 
impact on a substantial number of small entities. As required by 
Executive Order 13272, ``Proper Consideration of Small Entities in 
Agency Rulemaking,'' 67 FR 53461 (August 16, 2002), DOE published 
procedures and policies on February 19, 2003 to ensure that the 
potential impacts of its rules on small entities are properly 
considered during the DOE rulemaking process. 68 FR 7990. DOE has made 
its procedures and policies available on the Office of the General 
Counsel's Web site: http://energy.gov/gc/office-general-counsel.
    DOE reviewed this final rule, which establishes a new test 
procedure for dedicated-purpose pool pumps, under the provisions of the 
Regulatory Flexibility Act and the procedures and policies published on 
February 19, 2003. DOE concludes that this final rule will not result 
in a significant impact on a substantial number of small entities, as 
it would not, in and of itself, require the use of the adopted test 
procedure. That is, any burden associated with testing dedicated-
purpose pool pumps in accordance with the requirements of this test 
procedure is accounted for in the related January 2017 DPPP DFR, as 
promulgation of energy conservation standards is what ultimately 
requires use of the adopted test procedure. 82 FR 5650, 5738-40. On 
this basis, DOE certifies that this test procedure final rule would not 
have a ``significant economic impact on a substantial number of small 
entities,'' and the preparation of a regulatory flexibility analysis is 
not warranted. DOE will transmit the certification and supporting 
statement of factual basis to the Chief Counsel for Advocacy of the 
Small Business Administration (SBA) for review under 5 U.S.C. 605(b).
1. Review of DPPP Manufacturers
    As presented in the September 2016 DPPP test procedure NOPR, DOE 
conducted a focused inquiry into manufacturers of equipment covered by 
this rulemaking. During its market survey, DOE used available public 
information to identify potential small manufacturers. DOE's research 
involved the review of individual company Web sites and marketing 
research tools (e.g., Dun and Bradstreet reports, Manta, Hoovers) to 
create a list of companies that manufacture pumps covered by this 
rulemaking. Using these sources, DOE identified 21 distinct 
manufacturers of dedicated-purpose pool pumps. 81 FR 64580, 64637.
    DOE notes that the Regulatory Flexibility Act requires analysis of, 
in particular, ``small entities'' that might be affected by the rule. 
For the DPPP manufacturing industry, the SBA has set a size threshold, 
which defines those entities classified as ``small businesses'' for the 
purpose of the statute. DOE used the SBA's size standards to determine 
whether any small entities would be required to comply with the rule. 
The size standards are codified at 13 CFR part 121. The standards are 
listed by North American Industry Classification System (NAICS) code 
and industry description and are available at https://www.sba.gov/sites/default/files/files/Size_Standards_Table.pdf.
    DPPP manufacturers are classified under NAICS 333911, ``Pump and 
Pumping Equipment Manufacturing.'' The SBA sets a threshold of 750 
employees or less for an entity to be considered as a small business 
for this category. To determine the number of DPPP manufacturers that 
are small businesses and might be differentially affected by the rule, 
DOE reviewed these data to determine whether the entities met the SBA's 
definition of a small business manufacturer of dedicated-purpose pool 
pumps and then screened out companies that do not offer equipment 
covered by this rulemaking, do not meet the definition of a ``small 
business,'' are foreign-owned and operated, or are owned by another 
company. Based on this review, DOE identified five companies that would 
be considered small manufacturers by the SBA definition in terms of the 
number of employees.
    DOE requested comment on this estimate in the September 2016 DPPP 
test procedure NOPR. 81 FR 64580, 64637 (Sept. 20, 2016). Hayward 
commented that they had no means to confirm the accuracy of this value. 
(Hayward, No. 10 at pp. 10-11) Further analysis of small businesses was 
conducted as part of the Manufacturer Impact Analysis discussed in the 
January 2017 DPPP DFR. 82 FR 5650, 5726.
2. Burden of Conducting the DOE DPPP Test Procedure
    Although DOE maintains that this test procedure has no incremental 
burden associated with it when viewed as a stand-alone rulemaking, DOE 
recognizes that DPPP energy conservation standards were adopted in the 
January 2017 DPPP DFR. 86 FR 5650, 5743. Given the DPPP ECS rulemaking 
and the potential testing manufacturers may elect to undertake prior to 
July 19, 2021, the compliance date of adopted standards, DOE estimated 
the cost of developing certified ratings for covered DPPP models.
    In the September 2016 DPPP test procedure NOPR, DOE estimated the 
cost to test and certify a DPPP basic model, and the total 
certification cost for each manufacturer, based on input from 
manufacturers and independent research. DOE estimated the cost for both 
(a) testing units in house and (b) testing units at a third-party 
testing facility. Using the assumption that each manufacturer rates 15 
basic models on average, DOE developed testing costs for manufacturers 
that perform in-house testing ranging from $1,000 to $1,350 per basic 
model. This included up to $1,000 in capital costs, and up to $350 in 
labor costs to perform the DPPP tests to comply with DOE's testing 
requirements. For testing units at third party test labs, DOE estimated 
the cost to be $11,000 per basic model. 81 FR 64580, 64635-64637 (Sept. 
20, 2016).
    In response to the September 2016 DPPP test procedure NOPR, APSP, 
Hayward, and Pentair commented that DOE's estimated capital cost for 
in-house testing is too low. APSP, Hayward, Pentair, and Zodiac stated 
that a manufacturer starting out should expect to spend between $50,000 
and $100,000 for equipment suitable for testing. (APSP, No. 8 at p. 11; 
Hayward, No. 6 at p. 10; Pentair, No. 11, at p. 4; Zodiac, No. 13 at p. 
3) In addition, Hayward, APSP, and Zodiac stated that the estimated 
time to complete a test of a DPPP basic model is between 12 and 14 
hours. (APSP, No. 8 at p. 11;

[[Page 36914]]

Hayward, No. 6 at p. 10; Zodiac, No. 13 at p. 3)
    DOE notes that APSP, Hayward, Pentair, and Zodiac did not provide 
additional detail regarding the basis for their estimates or why they 
are higher than DOE's estimates. However, DOE recognizes that the 
assumptions in the September 2016 DPPP test procedure NOPR only 
accounted for the capital cost of acquiring the necessary equipment and 
did not account for the additional labor associated with setting up and 
commissioning any new testing facility. DOE believes that, including 
the additional labor estimates, a figure of $50,000 to $100,000 may be 
appropriate. Therefore, DOE has revised the worst-case burden estimate, 
which was previously estimated as $43,800, using the information 
provided by manufacturers. Using the same assumption from the September 
2016 DPPP test procedure NOPR that each manufacturer will rate 15 basic 
models on average and the estimated capital costs provided by Hayward, 
APSP, Pentair, and Zodiac, the worst-case burden estimate ranges from 
$3,333 to $6,666 per basic model. In addition, adjusting the testing 
time to 14 hours and using a labor rate with fringe benefits of $56.42 
per hour,\63\ the total labor costs are $790 per basic model. In total, 
using estimates from Hayward, APSP, Pentair, and Zodiac, the per basic 
model testing costs range from $4,123 to $7,456.
---------------------------------------------------------------------------

    \63\ U.S. Department of Labor, Bureau of Labor Statistics. 2015. 
Employer Costs for Employee Compensation--Management, Professional, 
and Related Employees. Washington, DC. www.bls.gov/news.release/pdf/ecec.pdf.
---------------------------------------------------------------------------

    However, as discussed in the September 2016 DPPP test procedure 
NOPR, many DPPP manufacturers already have existing testing 
capabilities and likely would not incur the full burden on constructing 
completely new test facilities. Specifically, DOE estimated a more 
representative burden estimate of $15,000 for manufacturers that may be 
required to acquire new power measurement equipment and power 
conditioning equipment to comply with the proposed test procedure 
requirements. However, DOE noted that the costs could be as low as $0. 
81 FR 64580, 64635-64637 (Sept. 20, 2016). DOE notes that these 
representative burden estimates are consistent with the comments of 
APSP, Hayward, and Pentair that many of the requirements regarding test 
equipment and test conditions adopted in the DOE test procedure are 
consistent with (or less stringent than) those already in use in 
manufacturer's test labs (see section III.E.2.e and III.E.2.f). (APSP, 
No. 8 at p. 7; Hayward, No. 6 at pp. 7, 11; Pentair, No. 11 at p. 4) In 
addition, in response to comments from interested parties, DOE is 
making several modifications in this test procedure final rule to 
further align testing requirements with existing industry programs and, 
therefore, reduce testing burden for manufacturers (see section 
III.E.2, III.H, and III.K.1). However, Pentair pointed out that 
manufacturers may need to upgrade capacity to certify all applicable 
DPPP models in accordance with the regulation. (Pentair, No. 11 at p. 
4) While DOE understands that manufacturers may incur cost to certify 
DPPP models in accordance with any energy conservation standard that 
may be set, there is no requirement to certify any or all models 
associated with this test procedure final rule. As such, DOE is 
assessing the burden associated with certifying DPPP models in 
accordance with this test procedure and the impact on manufacturers in 
the Manufacturer Impact Analysis in the associated energy conservation 
standard (Docket No. EERE-2015-BT-STD-0008). Specifically, in the 
Manufacturer Impact Analysis in the energy conservation standard, DOE 
is including the highest cost per basic model testing cost estimate to 
prevent underestimating testing burden to the industry. DOE determined 
that the per basic model test cost at third-party test labs ($11,000 
per model, as estimated in the September 2016 DPPP test procedure NOPR) 
is greater than the per basic model test cost estimate from Hayward, 
Pentair, and APSP. Therefore, in the ECS Manufacturer Impact 
Assessment, DOE assumes that all manufacturers test 15 basic models at 
third-party test labs at a cost of $11,000 per basic model.
    In the September 2016 DPPP test procedure NOPR, DOE also estimated 
that manufacturers incur testing burden every time a new basic model is 
introduced. DOE estimated that manufacturers introduce or significantly 
modify the basic model every 5 years. Pentair APSP, and Zodiac 
responded that significant changes in basic models are not common and 
the 5 year estimate is low. APSP commented that 5 years is the minimum 
time for a manufacturer to make changes to basic models, but it could 
be as much as 10 years. (Pentair, No. 11 at p. 4; APSP, No. 8 at p. 12; 
Zodiac, No. 13 at p. 3) DOE appreciates the comments from the 
interested parties and concludes that, based on the updated testing 
time of 14 hours discussed previously, ongoing testing costs would be 
approximately $790 per manufacturer to certify new models. However, DOE 
reiterates that this cost would not be required until the compliance 
date of any energy conservation standard that may be adopted for such 
equipment.

C. Review Under the Paperwork Reduction Act of 1995

    All collections of information from the public by a Federal agency 
must receive prior approval from OMB. DOE has established regulations 
for the certification and recordkeeping requirements for covered 
consumer products and industrial equipment. 10 CFR part 429, subpart B. 
In an application to renew the OMB information collection approval for 
DOE's certification and recordkeeping requirements filed in January 
2015, DOE included an estimated burden for manufacturers of pumps in 
case DOE ultimately sets energy conservation standards for this 
equipment, and OMB approved the revised information collection for 
DOE's certification and recordkeeping requirements. 80 FR 5099 (Jan. 
30, 2015). In the January 2016 general pumps ECS final rule, DOE 
established energy conservation standards and reporting requirements 
for certain categories of pumps and estimated that public reporting 
burden for the certification for pumps, similar to other covered 
consumer products and commercial equipment, would average 30 hours per 
response, including the time for reviewing instructions, searching 
existing data sources, gathering and maintaining the data needed, and 
completing and reviewing the collection of information. 81 FR 4368, 
4428 (Jan. 26, 2016). As dedicated-purpose pool pumps are a specific 
style of pump and the testing and certification requirements adopted in 
this final rule are similar to those established for general pumps in 
the January 2016 general pumps test procedure final rule, DOE believes 
that the estimated reporting burden of 30 hours would also be 
applicable for dedicated-purpose pool pumps. 81 FR 4086 (Jan. 25, 
2016). DOE notes that, although this test procedure rulemaking 
discusses recordkeeping requirements that are associated with executing 
and maintaining the test data for this equipment (see section III.K.1), 
certification requirements would not need to be performed until July 
19, 2021, the compliance date of adopted energy conservation standards 
for dedicated-purpose pool pumps.
    Notwithstanding any other provision of the law, no person is 
required to respond to, nor shall any person be subject to a penalty 
for failure to comply with, a collection of information subject to the 
requirements of the PRA, unless

[[Page 36915]]

that collection of information displays a currently valid OMB Control 
Number.

D. Review Under the National Environmental Policy Act of 1969

    In this final rule, DOE is adopting new definitions; a new test 
procedure; and new certification, enforcement, and labeling 
requirements for dedicated-purpose pool pumps. DOE has determined that 
this rule falls into a class of actions that are categorically excluded 
from review under the National Environmental Policy Act of 1969 (42 
U.S.C. 4321 et seq.) and DOE's implementing regulations at 10 CFR part 
1021. Specifically, this rule considers a test procedure for dedicated-
purpose pool pumps that is largely based upon industry test procedures 
and methodologies resulting from a negotiated rulemaking without 
affecting the amount, quality, or distribution of energy usage, and, 
therefore, will not result in any environmental impacts. Thus, this 
rulemaking is covered by Categorical Exclusion A5 under 10 CFR part 
1021, subpart D, which applies to any rulemaking that interprets or 
amends an existing rule without changing the environmental effect of 
that rule. Accordingly, neither an environmental assessment nor an 
environmental impact statement is required.

E. Review Under Executive Order 13132

    Executive Order 13132, ``Federalism,'' 64 FR 43255 (August 4, 
1999), imposes certain requirements on agencies formulating and 
implementing policies or regulations that preempt State law or that 
have Federalism implications. The Executive Order requires agencies to 
examine the constitutional and statutory authority supporting any 
action that would limit the policymaking discretion of the States and 
to carefully assess the necessity for such actions. The Executive Order 
also requires agencies to have an accountable process to ensure 
meaningful and timely input by State and local officials in the 
development of regulatory policies that have Federalism implications. 
On March 14, 2000, DOE published a statement of policy describing the 
intergovernmental consultation process it will follow in the 
development of such regulations. 65 FR 13735. DOE examined this final 
rule and determined that it will not have a substantial direct effect 
on the States, on the relationship between the national government and 
the States, or on the distribution of power and responsibilities among 
the various levels of government. EPCA governs and prescribes Federal 
preemption of State regulations as to energy conservation for the 
products that are the subject of this final rule. States can petition 
DOE for exemption from such preemption to the extent, and based on 
criteria, set forth in EPCA. (42 U.S.C. 6297(d)) No further action is 
required by Executive Order 13132.

F. Review Under Executive Order 12988

    Regarding the review of existing regulations and the promulgation 
of new regulations, section 3(a) of Executive Order 12988, ``Civil 
Justice Reform,'' 61 FR 4729 (Feb. 7, 1996), imposes on Federal 
agencies the general duty to adhere to the following requirements: (1) 
Eliminate drafting errors and ambiguity; (2) write regulations to 
minimize litigation; (3) provide a clear legal standard for affected 
conduct rather than a general standard; and (4) promote simplification 
and burden reduction. Section 3(b) of Executive Order 12988 
specifically requires that Executive agencies make every reasonable 
effort to ensure that the regulation (1) clearly specifies the 
preemptive effect, if any; (2) clearly specifies any effect on existing 
Federal law or regulation; (3) provides a clear legal standard for 
affected conduct while promoting simplification and burden reduction; 
(4) specifies the retroactive effect, if any; (5) adequately defines 
key terms; and (6) addresses other important issues affecting clarity 
and general draftsmanship under any guidelines issued by the Attorney 
General. Section 3(c) of Executive Order 12988 requires Executive 
agencies to review regulations in light of applicable standards in 
sections 3(a) and 3(b) to determine whether they are met or it is 
unreasonable to meet one or more of them. DOE has completed the 
required review and determined that, to the extent permitted by law, 
this final rule meets the relevant standards of Executive Order 12988.

G. Review Under the Unfunded Mandates Reform Act of 1995

    Title II of the Unfunded Mandates Reform Act of 1995 (UMRA) 
requires each Federal agency to assess the effects of Federal 
regulatory actions on State, local, and Tribal governments and the 
private sector. Public Law 104-4, sec. 201 (codified at 2 U.S.C. 1531). 
For a regulatory action resulting in a rule that may cause the 
expenditure by State, local, and Tribal governments, in the aggregate, 
or by the private sector of $100 million or more in any one year 
(adjusted annually for inflation), section 202 of UMRA requires a 
Federal agency to publish a written statement that estimates the 
resulting costs, benefits, and other effects on the national economy. 
(2 U.S.C. 1532(a), (b)) The UMRA also requires a Federal agency to 
develop an effective process to permit timely input by elected officers 
of State, local, and Tribal governments on a proposed ``significant 
intergovernmental mandate,'' and requires an agency plan for giving 
notice and opportunity for timely input to potentially affected small 
governments before establishing any requirements that might 
significantly or uniquely affect small governments. On March 18, 1997, 
DOE published a statement of policy on its process for 
intergovernmental consultation under UMRA. 62 FR 12820; also available 
at http://energy.gov/gc/office-general-counsel. DOE examined this final 
rule according to UMRA and its statement of policy and determined that 
the rule contains neither an intergovernmental mandate, nor a mandate 
that may result in the expenditure of $100 million or more in any year, 
so these requirements do not apply.

H. Review Under the Treasury and General Government Appropriations Act, 
1999

    Section 654 of the Treasury and General Government Appropriations 
Act, 1999 (Pub. L. 105-277) requires Federal agencies to issue a Family 
Policymaking Assessment for any rule that may affect family well-being. 
This final rule will not have any impact on the autonomy or integrity 
of the family as an institution. Accordingly, DOE has concluded that it 
is not necessary to prepare a Family Policymaking Assessment.

I. Review Under Executive Order 12630

    DOE has determined, under Executive Order 12630, ``Governmental 
Actions and Interference with Constitutionally Protected Property 
Rights,'' 53 FR 8859 (March 18, 1988), that this regulation will not 
result in any takings that might require compensation under the Fifth 
Amendment to the U.S. Constitution.

J. Review Under Treasury and General Government Appropriations Act, 
2001

    Section 515 of the Treasury and General Government Appropriations 
Act, 2001 (44 U.S.C. 3516 note) provides for agencies to review most 
disseminations of information to the public under guidelines 
established by each agency pursuant to general guidelines issued by 
OMB. OMB's guidelines were published at 67 FR 8452 (Feb. 22, 2002), and 
DOE's guidelines were published at 67 FR 62446 (Oct. 7, 2002). DOE has 
reviewed this final rule under the OMB and DOE guidelines and has 
concluded that it is

[[Page 36916]]

consistent with applicable policies in those guidelines.

K. Review Under Executive Order 13211

    Executive Order 13211, ``Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use,'' 66 FR 28355 
(May 22, 2001), requires Federal agencies to prepare and submit to OMB, 
a Statement of Energy Effects for any significant energy action. A 
``significant energy action'' is defined as any action by an agency 
that promulgated or is expected to lead to promulgation of a final 
rule, and that (1) is a significant regulatory action under Executive 
Order 12866, or any successor order; and (2) is likely to have a 
significant adverse effect on the supply, distribution, or use of 
energy; or (3) is designated by the Administrator of OIRA as a 
significant energy action. For any significant energy action, the 
agency must give a detailed statement of any adverse effects on energy 
supply, distribution, or use if the regulation is implemented, and of 
reasonable alternatives to the action and their expected benefits on 
energy supply, distribution, and use.
    This regulatory action is not a significant regulatory action under 
Executive Order 12866. Moreover, it would not have a significant 
adverse effect on the supply, distribution, or use of energy, nor has 
it been designated as a significant energy action by the Administrator 
of OIRA. Therefore, it is not a significant energy action, and, 
accordingly, DOE has not prepared a Statement of Energy Effects.

L. Review Under Section 32 of the Federal Energy Administration Act of 
1974

    Under section 301 of the Department of Energy Organization Act 
(Pub. L. 95-91; 42 U.S.C. 7101), DOE must comply with section 32 of the 
Federal Energy Administration Act of 1974, as amended by the Federal 
Energy Administration Authorization Act of 1977. (15 U.S.C. 788; FEAA) 
Section 32 essentially provides in relevant part that, where a proposed 
rule authorizes or requires use of commercial standards, the NOPR must 
inform the public of the use and background of such standards. In 
addition, section 32(c) requires DOE to consult with the Attorney 
General and the Chairman of the Federal Trade Commission (FTC) 
concerning the impact of the commercial or industry standards on 
competition.
    The modifications to the test procedure for dedicated-purpose pool 
pumps adopted in this final rule incorporates testing methods contained 
in certain sections of the following commercial standards:
    (1) UL 1081, (``ANSI/UL 1081-2016''), ``Standard for Swimming Pool 
Pumps, Filters, and Chlorinators,'' 7th Edition, ANSI approved October 
21, 2016.
    (2) Canadian Standards Association (CSA) C747-2009 (Reaffirmed 
2014), ``Energy Efficiency Test Methods for Small Motors,'' CSA 
reaffirmed 2014, section 1, ``Scope''; section 3, ``Definitions''; 
section 5, ``General Test Requirements''; and section 6, ``Test 
Method.''
    (3) Institute of Electrical and Electronics Engineers (IEEE) 
Standard 114-2010, ``Test Procedure for Single-Phase Induction 
Motors,'' Approved September 30, 2010, section 3.2, ``Tests with 
load''; section 4 ``Testing facilities''; section 5.2 ``Mechanical 
measurements''; section 5.3 ``Temperature measurements''; and section 6 
``Tests.''
    (4) Institute of Electrical and Electronics Engineers (IEEE) 
Standard 113-1985, ``IEEE Guide: Test Procedures for Direct-Current 
Machines,'' 1985, section 3.1, ``Instrument Selection Factors''; 
section 3.4 ``Power Measurement'': section 3.5 ``Power Sources''; 
section 4.1.2 ``Ambient Air''; section 4.1.4 ``Direction of Rotation''; 
section 5.4.1 ``Reference Conditions''; and section 5.4.3.2 
``Dynomometer or Torquemeter Method.''
    (5) NSF International Standard (NSF)/American National Standards 
Institute (ANSI) 50-2015, (``NSF/ANSI 50-2015''), ``Equipment for 
Swimming Pools, Spas, Hot Tubs and Other Recreational Water 
Facilities,'' approved January 26, 2015, section C.3, ``self-priming 
capability,'' of Annex C, ``Test methods for the evaluation of 
centrifugal pumps.''
    In addition, the rule expands the incorporation by reference of 
Hydraulic Institute (HI) 40.6-2014, (``HI 40.6-2014'') ``Methods for 
Rotodynamic Pump Efficiency Testing,'' (except for section 40.6.4.1, 
``Vertically suspended pumps``; section 40.6.4.2, ``Submersible 
pumps''; section 40.6.5.3, ``Test report''; section 40.6.5.5, ``Test 
conditions''; section 40.6.5.5.2, ``Speed of rotation during testing''; 
section 40.6.6.1, ``Translation of test results to rated speed of 
rotation''; Appendix A, section A.7, ``Testing at temperatures 
exceeding 30 [deg]C (86[emsp14][deg]F)''; and Appendix B, ``Reporting 
of test results (normative)'';) copyright 2014. HI 40.6-2014 is already 
IBR approved for Sec.  431.464, and appendix A to subpart Y of part 
431. 10 CFR 431.463. As such, DOE is only modifying the existing 
incorporation by reference to extend the applicability of certain 
sections to the new appendices B and C to subpart Y that will contain 
the DPPP test procedure.
    Although the DPPP test procedure is not exclusively based on these 
industry testing standards, some components of the test procedure will 
adopt definitions, test parameters, measurement techniques, and 
additional calculations from them without amendment. DOE has evaluated 
these standards and is unable to conclude whether it fully complies 
with the requirements of section 32(b) of the FEAA (i.e., whether it 
was developed in a manner that fully provides for public participation, 
comment, and review). DOE has consulted with both the Attorney General 
and the Chairman of the FTC about the impact on competition of using 
the methods contained in these standards and has received no comments 
objecting to their use.

M. Congressional Notification

    As required by 5 U.S.C. 801, DOE will report to Congress on the 
promulgation of this rule before its effective date. The report will 
state that it has been determined that the rule is not a ``major rule'' 
as defined by 5 U.S.C. 804(2).

N. Description of Materials Incorporated by Reference

    In this final rule, DOE incorporates by reference six industry 
standards related to pump nomenclature, definitions, and test 
specifications, which DOE has referenced in its proposed definitions 
and test procedure.
    Specifically, the definitions in this final rule, as well as 
relevant testing procedures to determine self-priming capability, 
incorporate by reference the following sections of the following 
standards:
    (1) UL 1081, (``ANSI/UL 1081-2016''), ``Standard for Swimming Pool 
Pumps, Filters, and Chlorinators,'' 7th Edition, ANSI approved October 
21, 2016.
    (2) Canadian Standards Association (CSA) C747-2009 (Reaffirmed 
2014), ``Energy Efficiency Test Methods for Small Motors,'' CSA 
reaffirmed 2014, section 1, ``Scope''; section 3, ``Definitions''; 
section 5, ``General Test Requirements''; and section 6, ``Test 
Method.''
    (3) Institute of Electrical and Electronics Engineers (IEEE) 
Standard 114-2010, ``Test Procedure for Single-Phase Induction 
Motors,'' Approved September 30, 2010, section 3.2, ``Tests with 
load''; section 4 ``Testing facilities''; section 5.2 ``Mechanical 
measurements''; section 5.3 ``Temperature measurements''; and section 6 
``Tests.''

[[Page 36917]]

    (4) Institute of Electrical and Electronics Engineers (IEEE) 
Standard 113-1985, ``IEEE Guide: Test Procedures for Direct-Current 
Machines,'' 1985, section 3.1, ``Instrument Selection Factors''; 
section 3.4 ``Power Measurement'': section 3.5 ``Power Sources''; 
section 4.1.2 ``Ambient Air''; section 4.1.4 ``Direction of Rotation''; 
section 5.4.1 ``Reference Conditions''; and section 5.4.3.2 
``Dynomometer or Torquemeter Method.''
    (5) NSF International Standard (NSF)/American National Standards 
Institute (ANSI) 50-2015, (``NSF/ANSI 50-2015''), ``Equipment for 
Swimming Pools, Spas, Hot Tubs and Other Recreational Water 
Facilities,'' approved January 26, 2015, section C.3, ``self-priming 
capability,'' of Annex C, ``Test methods for the evaluation of 
centrifugal pumps.''
    (6) Hydraulic Institute (HI) 40.6-2014, (``HI 40.6-2014-B'') 
``Methods for Rotodynamic Pump Efficiency Testing,'' (except for 
section 40.6.4.1, ``Vertically suspended pumps''; section 40.6.4.2, 
``Submersible pumps''; section 40.6.5.3, ``Test report''; section 
40.6.5.5, ``Test conditions''; section 40.6.5.5.2, ``Speed of rotation 
during testing''; section 40.6.6.1, ``Translation of test results to 
rated speed of rotation''; Appendix A, section A.7, ``Testing at 
temperatures exceeding 30 [deg]C (86[emsp14][deg]F)''; and Appendix B, 
``Reporting of test results (normative)'';) to establish procedures for 
measuring relevant pump performance parameters.
    DOE incorporates by reference UL 1081-2016 into 10 CFR 431.462 and 
NSF/ANSI 50-2015 into 10 CFR 429.59, 10 CFR 429.134, 10 CFR 431.462, 
and appendices B and C of subpart Y. UL 1081-2016 describes, among 
other things, the safety-related performance and construction 
requirements for rating dedicated-purpose pool pumps under the UL 1081 
standard. Section C.3 of annex C of the NSF/ANSI 50-2015 standard 
describes the test methods and criteria for establishing the self-
priming capability of dedicated-purpose pool pumps.
    DOE incorporates by reference CSA C747-2009 (RA 2014) into 
appendices B and C of part 431 to describe the standardized methods for 
determining certain DPPP motor horsepower characteristics. CSA C747-
2009 (RA 2014) contains standardized methods for evaluating and 
categorizing AC and DC electric motors that are internationally 
recognized and are harmonized with IEEE 114-2010 and IEEE 113-1985.
    DOE also incorporates by reference IEEE 114-2010 into appendices B 
and C of part 431 to describe the standardized methods for determining 
certain DPPP motor horsepower characteristics for dedicated-purpose 
pool pumps with single-phase AC motors. IEEE 114-2010 contains 
standardized methods for evaluating and categorizing single-phase 
induction motors. These methods are consistent with those in CSA C742-
2009 (RA 2014).
    DOE also incorporates by reference IEEE 113-1985 into appendices B 
and C of part 431 to describe the standardized methods for determining 
certain DPPP motor horsepower characteristics for dedicated-purpose 
pool pumps with DC motors. IEEE 113-1985 contains standardized methods 
for evaluating and categorizing DC motors. These methods are consistent 
with those in CSA C742-2009 (RA 2014).
    In addition, the test procedure adopted in this final rule 
incorporates by reference the Hydraulic Institute (HI) 40.6-2014, (``HI 
40.6-2014-B'') ``Methods for Rotodynamic Pump Efficiency Testing,'' 
(except for section 40.6.4.1, ``Vertically suspended pumps''; section 
40.6.4.2, ``Submersible pumps''; section 40.6.5.3, ``Test report''; 
section 40.6.5.5, ``Test conditions''; section 40.6.5.5.2, ``Speed of 
rotation during testing''; section 40.6.6.1, ``Translation of test 
results to rated speed of rotation''; Appendix A, section A.7, 
``Testing at temperatures exceeding 30 [deg]C (86[emsp14][deg]F)''; and 
Appendix B, ``Reporting of test results (normative)'';) to establish 
procedures for measuring relevant pump performance parameters. HI 40.6-
2014-B, with certain exceptions, is already IBR approved for appendix A 
to subpart Y of part 431. 10 CFR 431.463. DOE proposes to incorporate 
by reference HI 40.6-2014-B, with certain additional exceptions, into 
the new appendices B and C to subpart Y that would contain the DPPP 
test procedure, as well as 10 CFR 429.134 to support DOE's enforcement 
testing. HI 40.6-2014-B is an industry-accepted standard used to 
specify methods of testing for determining the head, flow rate, pump 
power input, driver power input, pump power output, and other relevant 
parameters necessary to determine the WEF of applicable pumps, as well 
as other voluntary metrics, adopted in this final rule (see sections 
III.C and III.H).
    Additionally, these standards can be obtained from the 
organizations directly at the following addresses:
    (1) UL, 333 Pfingsten Road, Northbrook, IL 60062, (847) 272-8800, 
or by visiting http://ul.com.
    (2) CSA, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, L4W 
5N6, Canada, (800) 463-6727, or by visiting www.csagroup.org.
    (3) IEEE, 45 Hoes Lane, P.O. Box 1331, Piscataway, NJ 08855-1331, 
(732) 981-0060, or by visiting http://www.ieee.org.
    (4) NSF International, 789 N. Dixboro Road, Ann Arbor, MI 48105, 
(743) 769-8010, or by visiting www.nsf.org.
    (5) Hydraulic Institute, located at 6 Campus Drive, First Floor 
North, Parsippany, NJ, 07054, (973) 267-9700, or by visiting 
www.pumps.org.

V. Approval of the Office of the Secretary

    The Secretary of Energy has approved publication of this final 
rule.

List of Subjects

10 CFR Part 429

    Administrative practice and procedure, Confidential business 
information, Energy conservation, Imports, Incorporation by reference, 
Intergovernmental relations, Small businesses.

10 CFR Part 431

    Administrative practice and procedure, Confidential business 
information, Energy conservation, Imports, Incorporation by reference, 
Intergovernmental relations, Small businesses.

    Issued in Washington, DC, on December 22, 2016.
Kathleen B. Hogan,
Deputy Assistant Secretary for Energy Efficiency, Energy Efficiency and 
Renewable Energy.

    For the reasons stated in the preamble, DOE amends parts 429 and 
431 of chapter II, subchapter D of title 10, Code of Federal 
Regulations as set forth below:

PART 429--CERTIFICATION, COMPLIANCE, AND ENFORCEMENT FOR CONSUMER 
PRODUCTS AND COMMERCIAL AND INDUSTRIAL EQUIPMENT

0
1. The authority citation for part 429 continues to read as follows:

    Authority: 42 U.S.C. 6291-6317; 28 U.S.C. 2461 note.


0
2. Section 429.4 is amended by:
0
a. Redesignating paragraph (d) as (e); and
0
b. Adding new paragraphs (d) and (f).
    The additions read as follows:


Sec.  429.4  Materials incorporated by reference.

* * * * *
    (d) HI. Hydraulic Institute, 6 Campus Drive, First Floor North, 
Parsippany, NJ 07054-4406, 973-267-9700. www.Pumps.org.

[[Page 36918]]

    (1) HI 40.6-2014, (``HI 40.6-2014-B''), ``Methods for Rotodynamic 
Pump Efficiency Testing,'', (except for sections 40.6.4.1 ``Vertically 
suspended pumps'', 40.6.4.2 ``Submersible pumps'',40.6.5.3 ``Test 
report'', 40.6.5.5 ``Test conditions'', 40.6.5.5.2 ``Speed of rotation 
during testing'', and 40.6.6.1 ``Translation of test results to rated 
speed of rotation'', and Appendix A ``Testing arrangements 
(normative)'': A.7 ``Testing at temperatures exceeding 30 [deg]C 
(86[emsp14][deg]F)'', and Appendix B ``Reporting of test results 
(normative)''), copyright 2014, IBR approved for Sec.  429.134.
    (2) [Reserved]
* * * * *
    (f) NSF. NSF International. 789 N. Dixboro Road, Ann Arbor, MI 
48105, (743) 769-8010. www.nsf.org.
    (1) NSF/ANSI 50-2015, ``Equipment for Swimming Pools, Spas, Hot 
Tubs and Other Recreational Water Facilities,'' Annex C--``Test methods 
for the evaluation of centrifugal pumps,'' Section C.3, ``self-priming 
capability,'' ANSI approved January 26, 2015, IBR approved for 
Sec. Sec.  429.59 and 429.134.
    (2) [Reserved]

0
3. Section 429.59 is amended by:
0
a. Revising paragraph (a)(1)(ii);
0
b. Adding paragraphs (a)(2), (b)(2)(iv) and (v), and (b)(3)(iv); and
0
c. Revising paragraph (c).
    The revisions and additions read as follows:


Sec.  429.59  Pumps.

    (a) * * *
    (1) * * *
    (ii) Any representation of weighted energy factor of a basic model 
must be less than or equal to the lower of:
    (A) The mean of the sample, where:
    [GRAPHIC] [TIFF OMITTED] TR07AU17.008
    
    And x is the sample mean; n is the number of samples; and 
xi is the maximum of the ith sample; or,
    (B) The lower 95 percent confidence limit (LCL) of the true mean 
divided by 0.95, where:
[GRAPHIC] [TIFF OMITTED] TR07AU17.009

    And x is the sample mean; s is the sample standard deviation; n is 
the number of samples; and t0.95 is the t statistic for a 95 
percent one-tailed confidence interval with n-1 degrees of freedom 
(from appendix A of this subpart).
    (2) Other representations--(i) Rated hydraulic horsepower. The 
representative value of rated hydraulic horsepower of a basic model of 
dedicated-purpose pool pump must be the mean of the rated hydraulic 
horsepower for each tested unit.
    (ii) Dedicated-purpose pool pump motor total horsepower. The 
representative value of dedicated-purpose pool pump motor total 
horsepower of a basic model of dedicated-purpose pool pump must be the 
mean of the dedicated-purpose pool pump motor total horsepower for each 
tested unit.
    (iii) True power factor (PFi). The representative value 
of true power factor at each load point i of a basic model of 
dedicated-purpose pool pump must be the mean of the true power factors 
at that load point for each tested unit of dedicated-purpose pool pump.
    (b) * * *
    (2) * * *
    (iv) For a dedicated-purpose pool pump subject to the test methods 
prescribed in Sec.  431.464(b) of this chapter: weighted energy factor 
(WEF) in kilogallons per kilowatt-hour (kgal/kWh); rated hydraulic 
horsepower in horsepower (hp); the speed configuration for which the 
pump is being rated (i.e., single-speed, two-speed, multi-speed, or 
variable-speed); true power factor at all applicable test procedure 
load points i (dimensionless), as specified in Table 1 of appendix B or 
C to subpart Y of part 431 of this chapter, as applicable; dedicated-
purpose pool pump nominal motor horsepower in horsepower (hp); 
dedicated-purpose pool pump motor total horsepower in horsepower (hp); 
dedicated-purpose pool pump service factor (dimensionless); for self-
priming pool filter pumps, non-self-priming pool filter pumps, and 
waterfall pumps: The maximum head (in feet) which is based on the mean 
of the units in the tested sample; a statement regarding whether freeze 
protection is shipped enabled or disabled; for dedicated-purpose pool 
pumps distributed in commerce with freeze protection controls enabled: 
The default dry-bulb air temperature setting (in [deg]F), default run 
time setting (in minutes), and default motor speed (in rpm); for self-
priming pool filter pumps a statement regarding whether the pump is 
certified with NSF/ANSI 50-2015 (incorporated by reference, see Sec.  
429.4) as self-priming; and, for self-priming pool filter pumps that 
are not certified with NSF/ANSI 50-2015 as self-priming: The vertical 
lift (in feet) and true priming time (in minutes) for the DPPP model.
    (v) For integral cartridge-filter and sand-filter pool pumps, the 
maximum run-time (in hours) of the pool pump control with which the 
integral cartridge-filter or sand-filter pump is distributed in 
commerce.
    (3) * * *
    (iv) For a dedicated-purpose pool pump subject to the test methods 
prescribed in Sec.  431.464(b) of this chapter: Calculated driver power 
input and flow rate at each load point i (Pi and 
Qi), in horsepower (hp) and gallons per minute (gpm), 
respectively.
* * * * *
    (c) Individual model numbers. (1) For a pump subject to the test 
methods prescribed in appendix A to subpart Y of part 431 of this 
chapter, each individual model number required to be reported pursuant 
to Sec.  429.12(b)(6) must consist of the following:

 
----------------------------------------------------------------------------------------------------------------
                                                                   Individual model number(s)
 Equipment configuration  (as    Basic model   -----------------------------------------------------------------
   distributed in commerce)         number                1                     2                     3
----------------------------------------------------------------------------------------------------------------
Bare pump....................  Number unique    Bare pump...........  N/A.................  N/A.
                                to the basic
                                model.
Bare pump with driver........  Number unique    Bare pump...........  Driver..............  N/A.
                                to the basic
                                model.
Bare pump with driver and      Number unique    Bare pump...........  Driver..............  Controls.
 controls.                      to the basic
                                model.
----------------------------------------------------------------------------------------------------------------

    (2) Or must otherwise provide sufficient information to identify 
the specific driver model and/or controls model(s) with which a bare 
pump is distributed.

0
4. Section 429.110 is amended by revising paragraphs (e)(1) and (5) to 
read as follows:

[[Page 36919]]

Sec.  429.110   Enforcement testing.

* * * * *
    (e) * * *
    (1) For products with applicable energy conservation standard(s) in 
Sec.  430.32 of this chapter, and commercial prerinse spray valves, 
illuminated exit signs, traffic signal modules and pedestrian modules, 
commercial clothes washers, dedicated-purpose pool pumps, and metal 
halide lamp ballasts, DOE will use a sample size of not more than 21 
units and follow the sampling plans in appendix A of this subpart 
(Sampling for Enforcement Testing of Covered Consumer Products and 
Certain High-Volume Commercial Equipment).
* * * * *
    (5) For pumps subject to the standards specified in Sec.  
431.465(a) of this chapter, DOE will use an initial sample size of not 
more than four units and will determine compliance based on the 
arithmetic mean of the sample.
* * * * *

0
5. Section 429.134 is amended by revising paragraph (i) to read as 
follows:


Sec.  429.134   Product-specific enforcement provisions.

* * * * *
    (i) Pumps--(1) General purpose pumps. (i) The volume rate of flow 
(flow rate) at BEP and nominal speed of rotation of each tested unit of 
the basic model will be measured pursuant to the test requirements of 
Sec.  431.464 of this chapter, where the value of volume rate of flow 
(flow rate) at BEP and nominal speed of rotation certified by the 
manufacturer will be treated as the expected BEP flow rate. The results 
of the measurement(s) will be compared to the value of volume rate of 
flow (flow rate) at BEP and nominal speed of rotation certified by the 
manufacturer. The certified volume rate of flow (flow rate) at BEP and 
nominal speed of rotation will be considered valid only if the 
measurement(s) (either the measured volume rate of flow (flow rate) at 
BEP and nominal speed of rotation for a single unit sample or the 
average of the measured flow rates for a multiple unit sample) is 
within five percent of the certified volume rate of flow (flow rate) at 
BEP and nominal speed of rotation.
    (A) If the representative value of volume rate of flow (flow rate) 
at BEP and nominal speed of rotation is found to be valid, the measured 
volume rate of flow (flow rate) at BEP and nominal speed of rotation 
will be used in subsequent calculations of constant load pump energy 
rating (PERCL) and constant load pump energy index 
(PEICL) or variable load pump energy rating 
(PERVL) and variable load pump energy index 
(PEIVL) for that basic model.
    (B) If the representative value of volume rate of flow (flow rate) 
at BEP and nominal speed of rotation is found to be invalid, the mean 
of all the measured volume rate of flow (flow rate) at BEP and nominal 
speed of rotation values determined from the tested unit(s) will serve 
as the new expected BEP flow rate and the unit(s) will be retested 
until such time as the measured rate of flow (flow rate) at BEP and 
nominal speed of rotation is within 5 percent of the expected BEP flow 
rate.
    (ii) DOE will test each pump unit according to the test method 
specified by the manufacturer in the certification report submitted 
pursuant to Sec.  429.59(b).
    (2) Dedicated-purpose pool pumps. (i) The rated hydraulic 
horsepower of each tested unit of the basic model of dedicated-purpose 
pool pump will be measured pursuant to the test requirements of Sec.  
431.464(b) of this chapter and the result of the measurement(s) will be 
compared to the value of rated hydraulic horsepower certified by the 
manufacturer. The certified rated hydraulic horsepower will be 
considered valid only if the measurement(s) (either the measured rated 
hydraulic horsepower for a single unit sample or the average of the 
measured rated hydraulic horsepower values for a multiple unit sample) 
is within 5 percent of the certified rated hydraulic horsepower.
    (A) If the representative value of rated hydraulic horsepower is 
found to be valid, the value of rated hydraulic horsepower certified by 
the manufacturer will be used to determine the standard level for that 
basic model.
    (B) If the representative value of rated hydraulic horsepower is 
found to be invalid, the mean of all the measured rated hydraulic 
horsepower values determined from the tested unit(s) will be used to 
determine the standard level for that basic model.
    (ii) To verify the self-priming capability of non-self-priming pool 
filter pumps and of self-priming pool filter pumps that are not 
certified with NSF/ANSI 50-2015 (incorporated by reference, see Sec.  
429.4) as self-priming, the vertical lift and true priming time of each 
tested unit of the basic model of self-priming or non-self-priming pool 
filter pump will be measured pursuant to the test requirements of Sec.  
431.464(b) of this chapter.
    (A) For self-priming pool filter pumps that are not certified with 
NSF/ANSI 50-2015 as self-priming, at a vertical lift of 5.0 feet, the 
result of the true priming time measurement(s) will be compared to the 
value of true priming time certified by the manufacturer. The certified 
value of true priming time will be considered valid only if the 
measurement(s) (either the measured true priming time for a single unit 
sample or the average of true priming time values for a multiple unit 
sample) is within 5 percent of the certified value of true priming 
time.
    (1) If the representative value of true priming time is found to be 
valid, the value of true priming time certified by the manufacturer 
will be used to determine the appropriate equipment class and standard 
level for that basic model.
    (2) If the representative value of true priming time is found to be 
invalid, the mean of the values of true priming time determined from 
the tested unit(s) will be used to determine the appropriate equipment 
class and standard level for that basic model.
    (B) For non-self-priming pool filter pumps, at a vertical lift of 
5.0 feet, the result of the true priming time measurement(s) (either 
the measured true priming time for a single unit sample or the average 
of true priming time values, for a multiple unit sample) will be 
compared to the value of true priming time referenced in the definition 
of non-self-priming pool filter pump at Sec.  431.462 (10.0 minutes).
    (1) If the measurement(s) of true priming time are greater than 95 
percent of the value of true priming time referenced in the definition 
of non-self-priming pool filter pump at Sec.  431.462 with a vertical 
lift of 5.0 feet, the DPPP model will be considered a non-self-priming 
pool filter pump for the purposes of determining the appropriate 
equipment class and standard level for that basic model.
    (2) If the conditions specified in paragraph (i)(2)(ii)(B)(1) of 
this section are not satisfied, then the DPPP model will be considered 
a self-priming pool filter pump for the purposes of determining the 
appropriate equipment class and standard level for that basic model.
    (iii) To verify the maximum head of self-priming pool filter pump, 
non-self-priming pool filter pumps, and waterfall pumps, the maximum 
head of each tested unit of the basic model of self-priming pool filter 
pump, non-self-priming pool filter pump, or waterfall pump will be 
measured pursuant to the test requirements of Sec.  431.464(b) of this 
chapter and the result of the measurement(s) will be compared to the 
value of maximum head certified by the manufacturer. The certified 
value of maximum head will be considered valid

[[Page 36920]]

only if the measurement(s) (either the measured maximum head for a 
single unit sample or the average of the maximum head values for a 
multiple unit sample) is within 5 percent of the certified values of 
maximum head.
    (A) If the representative value of maximum head is found to be 
valid, the value of maximum head certified by the manufacturer will be 
used to determine the appropriate equipment class and standard level 
for that basic model.
    (B) If the representative value of maximum head is found to be 
invalid, the measured value(s) of maximum head determined from the 
tested unit(s) will be used to determine the appropriate equipment 
class and standard level for that basic model.
    (iv) To verify that a DPPP model complies with the applicable 
freeze protection control design requirements, the initiation 
temperature, run-time, and speed of rotation of the default control 
configuration of each tested unit of the basic model of dedicated-
purpose pool pump will be evaluated according to the procedure 
specified in paragraph (i)(2)(iv)(A) of this section:
    (A)(1) Set up and configure the dedicated-purpose pool pump under 
test according to the manufacturer instructions, including any 
necessary initial priming, in a test apparatus as described in appendix 
A of HI 40.6-2014-B (incorporated by reference, see Sec.  429.4), 
except that the ambient temperature registered by the freeze protection 
ambient temperature sensor will be able to be measured and controlled 
by, for example, exposing the freeze protection temperature sensor to a 
specific temperature by submerging the sensor in a water bath of known 
temperature, by adjusting the actual ambient air temperature of the 
test chamber and measuring the temperature at the freeze protection 
ambient temperature sensor location, or by other means that allows the 
ambient temperature registered by the freeze protection temperature 
sensor to be reliably simulated, varied, and measured. Do not adjust 
the default freeze protection control settings or enable the freeze 
protection control if it is shipped disabled.
    (2) Activate power to the pump with the flow rate set to zero 
(i.e., the pump is energized but not circulating water). Set the 
ambient temperature to 42.0  0.5[emsp14][deg]F and allow 
the temperature to stabilize, where stability is determined in 
accordance with section 40.6.3.2.2 of HI 40.6-2014-B. After 5 minutes, 
decrease the temperature measured by the freeze protection temperature 
sensor by 1.0  0.5[emsp14][deg]F and allow the temperature 
to stabilize. After each reduction in ambient temperature and 
subsequent stabilization, record the DPPP rotating speed, if any, and 
freeze protection ambient temperature reading, where the ``freeze 
protection ambient temperature reading'' is representative of the 
temperature measured by the freeze protection ambient temperature 
sensor, which may be recorded by a variety of means depending on how 
the temperature is being simulated and controlled. If no flow is 
initiated, record zero rpm or no flow. Continue decreasing the 
temperature measured by the freeze protection temperature sensor by 1.0 
 0.5[emsp14][deg]F after 5.0 minutes of stable operation at 
the previous temperature reading until the pump freeze protection 
initiates water circulation or until the ambient temperature of 38.0 
 0.5[emsp14][deg]F has been evaluated (i.e., the end of the 
5.0 minute interval of 38.0[emsp14][deg]F), whichever occurs first.
    (3) If and when the DPPP freeze protection controls initiate water 
circulation, increase the ambient temperature reading registered by the 
freeze protection temperature sensor to a temperature of 42.0  0.5[emsp14][deg]F and maintain that temperature for 60.0 
minutes. Do not modify or interfere with the operation of the DPPP 
freeze protection operating cycle. After 60.0 minutes, record the 
freeze protection ambient temperature and rotating speed, if any, of 
the dedicated-purpose pool pump under test.
    (B) If the dedicated-purpose pool pump initiates water circulation 
at a temperature greater than 40.0[emsp14][deg]F; if the dedicated-
purpose pool pump was still circulating water after 60.0 minutes of 
operation at 42.0  0.5[emsp14][deg]F; or if rotating speed 
measured at any point during the DPPP freeze protection control test in 
paragraph (i)(2)(iii)(A) of this section was greater than one-half of 
the maximum rotating speed of the DPPP model certified by the 
manufacturer, that DPPP model is deemed to not comply with the design 
requirement for freeze protection controls.
    (C) If none of the conditions specified in paragraph (i)(2)(iv)(B) 
of this section are met, including if the DPPP freeze protection 
control does not initiate water circulation at all during the test, the 
dedicated-purpose pool pump under test is deemed compliant with the 
design requirement for freeze protection controls.
* * * * *

PART 431--ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND 
INDUSTRIAL EQUIPMENT

0
6. The authority citation for part 431 continues to read as follows:

    Authority:  42 U.S.C. 6291-6317; 28 U.S.C. 2461 note.

0
7. Section 431.462 is amended by:
0
a. Revising the introductory text; and
0
b. Revising the definition of ``Basic model;''
0
c. Adding, in alphabetical order, definitions for ``Basket strainer,'' 
``Dedicated-purpose pool pump,'' ``Dedicated-purpose pool pump motor 
total horsepower,'' ``Dedicated-purpose pool pump service factor,'' 
``Designed and marketed,'' ``Freeze protection control,'' ``Integral,'' 
``Integral cartridge-filter pool pump,'' ``Integral sand-filter pool 
pump,'' ``Multi-speed dedicated-purpose pool pump,'' ``Non-self-priming 
pool filter pump,'' ``Pool filter pump,'' ``Pressure cleaner booster 
pump,'' ``Removable cartridge filter,'' ``Rigid electric spa pump,'' 
``Sand filter,'' and ``Self-priming pool filter pump;''
0
d. Revising the definition of ``Self-priming pump;'' and
0
e. Adding, in alphabetical order, definitions for ``Single-speed 
dedicated-purpose pool pump,'' ``Storable electric spa pump,'' 
``Submersible pump,'' ``Two-speed dedicated-purpose pool pump,'' 
``Variable-speed dedicated-purpose pool pump,'' ``Variable speed 
drive,'' and ``Waterfall pump.''
    The additions and revisions read as follows:


Sec.  431.462   Definitions.

    The following definitions are applicable to this subpart, including 
appendices A and B. In cases where there is a conflict, the language of 
the definitions adopted in this section takes precedence over any 
descriptions or definitions found in the 2014 version of ANSI/HI 
Standard 1.1-1.2, ``Rotodynamic (Centrifugal) Pumps For Nomenclature 
And Definitions'' (ANSI/HI 1.1-1.2-2014; incorporated by reference, see 
Sec.  431.463), or the 2014 version of ANSI/HI Standard 2.1-2.2, 
``Rotodynamic (Vertical) Pumps For Nomenclature And Definitions'' 
(ANSI/HI 2.1-2.2-2014; incorporated by reference, see Sec.  431.463). 
In cases where definitions reference design intent, DOE will consider 
marketing materials, labels and certifications, and equipment design to 
determine design intent.
* * * * *
    Basic model means all units of a given class of pump manufactured 
by one manufacturer, having the same primary

[[Page 36921]]

energy source, and having essentially identical electrical, physical, 
and functional (or hydraulic) characteristics that affect energy 
consumption, energy efficiency, water consumption, or water efficiency; 
and, in addition, for pumps that are subject to the standards specified 
in Sec.  431.465(b), the following provisions also apply:
    (1) All variations in numbers of stages of bare RSV and ST pumps 
must be considered a single basic model;
    (2) Pump models for which the bare pump differs in impeller 
diameter, or impeller trim, may be considered a single basic model; and
    (3) Pump models for which the bare pump differs in number of stages 
or impeller diameter and which are sold with motors (or motors and 
controls) of varying horsepower may only be considered a single basic 
model if:
    (i) For ESCC, ESFM, IL, and RSV pumps, each motor offered in the 
basic model has a nominal full load motor efficiency rated at the 
Federal minimum (see the current table for NEMA Design B motors at 
Sec.  431.25) or the same number of bands above the Federal minimum for 
each respective motor horsepower (see Table 3 of appendix A to subpart 
Y of this part); or
    (ii) For ST pumps, each motor offered in the basic model has a full 
load motor efficiency at the default nominal full load submersible 
motor efficiency shown in Table 2 of appendix A to subpart Y of this 
part or the same number of bands above the default nominal full load 
submersible motor efficiency for each respective motor horsepower (see 
Table 3 of appendix A to subpart Y of this part).
    Basket strainer means a perforated or otherwise porous receptacle, 
mounted within a housing on the suction side of a pump, that prevents 
solid debris from entering a pump. The basket strainer receptacle is 
capable of passing spherical solids of 1 mm in diameter, and can be 
removed by hand or using only simple tools (e.g., screwdriver, pliers, 
open-ended wrench).
* * * * *
    Dedicated-purpose pool pump comprises self-priming pool filter 
pumps, non-self-priming pool filter pumps, waterfall pumps, pressure 
cleaner booster pumps, integral sand-filter pool pumps, integral-
cartridge filter pool pumps, storable electric spa pumps, and rigid 
electric spa pumps.
    Dedicated-purpose pool pump motor total horsepower means the 
product of the dedicated-purpose pool pump nominal motor horsepower and 
the dedicated-purpose pool pump service factor of a motor used on a 
dedicated-purpose pool pump based on the maximum continuous duty motor 
power output rating allowable for the motor's nameplate ambient rating 
and insulation class. (Dedicated-purpose pool pump motor total 
horsepower is also referred to in the industry as service factor 
horsepower or motor capacity.)
    Dedicated-purpose pool pump service factor means a multiplier 
applied to the rated horsepower of a pump motor to indicate the percent 
above nameplate horsepower at which the motor can operate continuously 
without exceeding its allowable insulation class temperature limit.
    Designed and marketed means that the equipment is designed to 
fulfill the indicated application and, when distributed in commerce, is 
designated and marketed for that application, with the designation on 
the packaging and any publicly available documents (e.g., product 
literature, catalogs, and packaging labels).
* * * * *
    Freeze protection control means a pool pump control that, at a 
certain ambient temperature, turns on the dedicated-purpose pool pump 
to circulate water for a period of time to prevent the pool and water 
in plumbing from freezing.
* * * * *
    Integral means a part of the device that cannot be removed without 
compromising the device's function or destroying the physical integrity 
of the unit.
    Integral cartridge-filter pool pump means a pump that requires a 
removable cartridge filter, installed on the suction side of the pump, 
for operation; and the cartridge filter cannot be bypassed.
    Integral sand-filter pool pump means a pump distributed in commerce 
with a sand filter that cannot be bypassed.
* * * * *
    Multi-speed dedicated-purpose pool pump means a dedicated-purpose 
pool pump that is capable of operating at more than two discrete, pre-
determined operating speeds separated by speed increments greater than 
100 rpm, where the lowest speed is less than or equal to half of the 
maximum operating speed and greater than zero, and must be distributed 
in commerce with an on-board pool pump control (i.e., variable speed 
drive and user interface or programmable switch) that changes the speed 
in response to pre-programmed user preferences and allows the user to 
select the duration of each speed and/or the on/off times.
* * * * *
    Non-self-priming pool filter pump means a pool filter pump that is 
not certified under NSF/ANSI 50-2015 (incorporated by reference, see 
Sec.  431.463) to be self-priming and is not capable of re-priming to a 
vertical lift of at least 5.0 feet with a true priming time less than 
or equal to 10.0 minutes, when tested in accordance with section F of 
appendix B or C of this subpart, and is not a waterfall pump.
    Pool filter pump means an end suction pump that:
    (1) Either:
    (i) Includes an integrated basket strainer; or
    (ii) Does not include an integrated basket strainer, but requires a 
basket strainer for operation, as stated in manufacturer literature 
provided with the pump; and
    (2) May be distributed in commerce connected to, or packaged with, 
a sand filter, removable cartridge filter, or other filtration 
accessory, so long as the filtration accessory are connected with 
consumer-removable connections that allow the filtration accessory to 
be bypassed.
* * * * *
    Pressure cleaner booster pump means an end suction, dry rotor pump 
designed and marketed for pressure-side pool cleaner applications, and 
which may be UL listed under ANSI/UL 1081-2016 (incorporated by 
reference, see Sec.  431.463).
* * * * *
    Removable cartridge filter means a filter component with fixed 
dimensions that captures and removes suspended particles from water 
flowing through the unit. The removable cartridge filter is not capable 
of passing spherical solids of 1 mm in diameter or greater, and can be 
removed from the filter housing by hand or using only simple tools 
(e.g., screwdrivers, pliers, open-ended wrench).
    Rigid electric spa pump means an end suction pump that does not 
contain an integrated basket strainer or require a basket strainer for 
operation as stated in manufacturer literature provided with the pump 
and that meets the following three criteria:
    (1) Is assembled with four through bolts that hold the motor rear 
endplate, rear bearing, rotor, front bearing, front endplate, and the 
bare pump together as an integral unit;
    (2) Is constructed with buttress threads at the inlet and discharge 
of the bare pump; and
    (3) Uses a casing or volute and connections constructed of a non-
metallic material.
* * * * *
    Sand filter means a device designed to filter water through sand or 
an alternate sand-type media.

[[Page 36922]]

    Self-priming pool filter pump means a pool filter pump that is 
certified under NSF/ANSI 50-2015 (incorporated by reference, see Sec.  
431.463) to be self-priming or is capable of re-priming to a vertical 
lift of at least 5.0 feet with a true priming time less than or equal 
to 10.0 minutes, when tested in accordance with section F of appendix B 
or C of this subpart, and is not a waterfall pump.
    Self-priming pump means a pump that either is a self-priming pool 
filter pump or a pump that:
    (1) Is designed to lift liquid that originates below the centerline 
of the pump inlet;
    (2) Contains at least one internal recirculation passage; and
    (3) Requires a manual filling of the pump casing prior to initial 
start-up, but is able to re-prime after the initial start-up without 
the use of external vacuum sources, manual filling, or a foot valve.
* * * * *
    Single-speed dedicated-purpose pool pump means a dedicated-purpose 
pool pump that is capable of operating at only one speed.
    Storable electric spa pump means a pump that is distributed in 
commerce with one or more of the following:
    (1) An integral heater; and
    (2) An integral air pump.
    Submersible pump means a pump that is designed to be operated with 
the motor and bare pump fully submerged in the pumped liquid.
* * * * *
    Two-speed dedicated-purpose pool pump means a dedicated-purpose 
pool pump that is capable of operating at only two different pre-
determined operating speeds, where the low operating speed is less than 
or equal to half of the maximum operating speed and greater than zero, 
and must be distributed in commerce either:
    (1) With a pool pump control (e.g., variable speed drive and user 
interface or switch) that is capable of changing the speed in response 
to user preferences; or
    (2) Without a pool pump control that has the capability to change 
speed in response to user preferences, but is unable to operate without 
the presence of such a pool pump control.
    Variable-speed dedicated-purpose pool pump means a dedicated-
purpose pool pump that is capable of operating at a variety of user-
determined speeds, where all the speeds are separated by at most 100 
rpm increments over the operating range and the lowest operating speed 
is less than or equal to one-third of the maximum operating speed and 
greater than zero. Such a pump must include a variable speed drive and 
be distributed in commerce either:
    (1) With a user interface that changes the speed in response to 
pre-programmed user preferences and allows the user to select the 
duration of each speed and/or the on/off times; or
    (2) Without a user interface that changes the speed in response to 
pre-programmed user preferences and allows the user to select the 
duration of each speed and/or the on/off times, but is unable to 
operate without the presence of a user interface.
    Variable speed drive means equipment capable of varying the speed 
of the motor.
    Waterfall pump means a pool filter pump with a certified maximum 
head less than or equal to 30.0 feet, and a maximum speed less than or 
equal to 1,800 rpm.

0
8. Section 431.463 is amended by:
0
a. Revising paragraph (a);
0
b. Redesignating paragraphs (b) through (d) and (e) as paragraphs (c) 
through (f) and (h), respectively;
0
c. Adding new paragraph (b);
0
d. In newly redesignated paragraph (d), adding paragraph (d)(4);
0
e. Adding new paragraphs (e) and (g); and
0
f. In newly redesignated paragraph (h), adding paragraph (h)(2).
    The revisions and additions read as follows:


Sec.  431.463   Materials incorporated by reference.

    (a) General. DOE incorporates by reference the following standards 
into subpart Y of this part. The material listed has been approved for 
incorporation by reference by the Director of the Federal Register in 
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Any subsequent 
amendment to a standard by the standard-setting organization will not 
affect the DOE test procedures unless and until amended by DOE. 
Material is incorporated as it exists on the date of the approval, and 
notification of any change in the material will be published in the 
Federal Register. All approved material can be obtained from the 
sources listed in this section and is available for inspection at the 
U.S. Department of Energy, Office of Energy Efficiency and Renewable 
Energy, Building Technologies Program, Sixth Floor, 950 L'Enfant Plaza 
SW., Washington, DC 20024, (202) 586-2945, or go to: http://www1.eere.energy.gov/buildings/appliance_standards. It is also 
available for inspection at the National Archives and Records 
Administration (NARA). For information on the availability of this 
material at NARA, call 202-741-6030, or go to: www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
    (b) CSA. Canadian Standards Association, 5060 Spectrum Way, Suite 
100, Mississauga, Ontario, L4W 5N6, Canada, (800) 463-6727. 
www.csagroup.org.
    (1) CSA C747-2009 (Reaffirmed 2014), (``CSA C747-2009 (RA 2014)''), 
``Energy efficiency test methods for small motors,'' CSA reaffirmed 
2014, IBR approved for appendices B and C to this subpart, as follows:
    (i) Section 1, ``Scope'';
    (ii) Section 3, ``Definitions'';
    (iii) Section 5, ``General Test Requirements''; and
    (iv) Section 6, ``Test Method.''
    (2) [Reserved]
* * * * *
    (d) * * *
    (4) HI 40.6-2014, (``HI 40.6-2014-B''), ``Methods for Rotodynamic 
Pump Efficiency Testing'' (except sections 40.6.4.1 ``Vertically 
suspended pumps'', 40.6.4.2 ``Submersible pumps'', 40.6.5.3 ``Test 
report'', 40.6.5.5 ``Test conditions'', 40.6.5.5.2 ``Speed of rotation 
during test'', and 40.6.6.1 ``Translation of test results to rated 
speed of rotation'', Appendix A ``Test arrangements (normative)'': A.7 
``Testing at temperatures exceeding 30 [deg]C (86[emsp14][deg]F)'', and 
Appendix B, ``Reporting of test results (normative)''), copyright 2014, 
IBR approved for appendices B and C to this subpart.
    (e) IEEE. Institute of Electrical and Electronics Engineers, Inc., 
45 Hoes Lane, P.O. Box 1331, Piscataway, NJ 08855-1331, (732) 981-0060. 
http://www.ieee.org.
    (1) IEEE Std 113-1985, (``IEEE 113-1985''), ``IEEE Guide: Test 
Procedures for Direct-Current Machines,'' copyright 1985, IBR approved 
for appendices B and C to this subpart, as follows:
    (i) Section 3, Electrical Measurements and Power Sources for all 
Test Procedures:
    (A) Section 3.1, ``Instrument Selection Factors'';
    (B) Section 3.4 ``Power Measurement''; and
    (C) Section 3.5 ``Power Sources'';
    (ii) Section 4, Preliminary Tests:
    (A) Section 4.1, Reference Conditions, Section 4.1.2, ``Ambient 
Air''; and
    (B) Section 4.1, Reference Conditions, Section 4.1.4 ``Direction of 
Rotation''; and
    (iii) Section 5, Performance Determination:
    (A) Section 5.4, Efficiency, Section 5.4.1, ``Reference 
Conditions''; and
    (B) Section 5.4.3, Direct Measurements of Input and Output,

[[Page 36923]]

Section 5.4.3.2 ``Dynomometer or Torquemeter Method.''
    (2) IEEE Std 114-2010, (``IEEE 114-2010''), ``IEEE Standard Test 
Procedure for Single-Phase Induction Motors,'' approved September 30, 
2010, IBR approved for appendices B and C to this subpart, as follows:
    (i) Section 3, ``General tests'', Section 3.2, ``Tests with load'';
    (ii) Section 4 ``Testing facilities''; and
    (iii) Section 5, ``Measurements'':
    (A) Section 5.2 ``Mechanical measurements'';
    (B) Section 5.3 ``Temperature measurements''; and
    (iv) Section 6 ``Tests.''
* * * * *
    (g) NSF. NSF International. 789 N. Dixboro Road, Ann Arbor, MI 
48105, (743) 769-8010. www.nsf.org.
    (1) NSF/ANSI 50-2015, ``Equipment for Swimming Pools, Spas, Hot 
Tubs and Other Recreational Water Facilities,'' Annex C, ``(normative 
Test methods for the evaluation of centrifugal pumps,'' Section C.3, 
``Self-priming capability,'' ANSI approved January 26, 2015, IBR 
approved for Sec.  431.462 and appendices B and C to this subpart.
    (2) [Reserved]
    (h) * * *
    (2) UL 1081, (``ANSI/UL 1081-2016''), ``Standard for Swimming Pool 
Pumps, Filters, and Chlorinators,'' 7th Edition, ANSI approved October 
21, 2016, IBR approved for Sec.  431.462.

0
9. Section 431.464 is revised to read as follows:


Sec.  431.464  Test procedure for the measurement of energy efficiency, 
energy consumption, and other performance factors of pumps.

    (a) General pumps--(1) Scope. This paragraph (a) provides the test 
procedures for determining the constant and variable load pump energy 
index for:
    (i) The following categories of clean water pumps:
    (A) End suction close-coupled (ESCC);
    (B) End suction frame mounted/own bearings (ESFM);
    (C) In-line (IL);
    (D) Radially split, multi-stage, vertical, in-line casing diffuser 
(RSV); and
    (E) Submersible turbine (ST) pumps.
    (ii) With the following characteristics:
    (A) Flow rate of 25 gpm or greater at BEP and full impeller 
diameter;
    (B) Maximum head of 459 feet at BEP and full impeller diameter and 
the number of stages required for testing (see section 1.2.2 of 
appendix A of this subpart);
    (C) Design temperature range from 14 to 248 [deg]F;
    (D) Designed to operate with either:
    (1) A 2- or 4-pole induction motor; or
    (2) A non-induction motor with a speed of rotation operating range 
that includes speeds of rotation between 2,880 and 4,320 revolutions 
per minute (rpm) and/or 1,440 and 2,160 rpm, and in either case, the 
driver and impeller must rotate at the same speed;
    (E) For ST pumps, a 6-inch or smaller bowl diameter; and
    (F) For ESCC and ESFM pumps, a specific speed less than or equal to 
5,000 when calculated using U.S. customary units.
    (iii) Except for the following pumps:
    (A) Fire pumps;
    (B) Self-priming pumps;
    (C) Prime-assist pumps;
    (D) Magnet driven pumps;
    (E) Pumps designed to be used in a nuclear facility subject to 10 
CFR part 50, ``Domestic Licensing of Production and Utilization 
Facilities''; and
    (F) Pumps meeting the design and construction requirements set 
forth in Military Specifications: MIL-P-17639F, ``Pumps, Centrifugal, 
Miscellaneous Service, Naval Shipboard Use'' (as amended); MIL-P-
17881D, ``Pumps, Centrifugal, Boiler Feed, (Multi-Stage)'' (as 
amended); MIL-P-17840C, ``Pumps, Centrifugal, Close-Coupled, Navy 
Standard (For Surface Ship Application)'' (as amended); MIL-P-18682D, 
``Pump, Centrifugal, Main Condenser Circulating, Naval Shipboard'' (as 
amended); and MIL-P-18472G, ``Pumps, Centrifugal, Condensate, Feed 
Booster, Waste Heat Boiler, And Distilling Plant'' (as amended). 
Military specifications and standards are available for review at 
http://everyspec.com/MIL-SPECS.
    (2) Testing and calculations. Determine the applicable constant 
load pump energy index (PEICL) or variable load pump energy 
index (PEIVL) using the test procedure set forth in appendix 
A of this subpart.
    (b) Dedicated-purpose pool pumps--(1) Scope. This paragraph (b) 
provides the test procedures for determining the weighted energy factor 
(WEF), rated hydraulic horsepower, dedicated-purpose pool pump nominal 
motor horsepower, dedicated-purpose pool pump motor total horsepower, 
dedicated-purpose pool pump service factor, and other pump performance 
parameters for:
    (i) The following varieties of dedicated-purpose pool pumps:
    (A) Self-priming pool filter pumps;
    (B) Non-self-priming pool filter pumps;
    (C) Waterfall pumps; and
    (D) Pressure cleaner booster pumps;
    (ii) Served by single-phase or polyphase input power;
    (iii) Except for:
    (A) Submersible pumps; and
    (B) Self-priming and non-self-priming pool filter pumps with 
hydraulic output power greater than or equal to 2.5 horsepower.
    (2) Testing and calculations. Determine the weighted energy factor 
(WEF) using the test procedure set forth in appendix B or appendix C of 
this subpart, as applicable.

0
10. Section 431.466 is revised to read as follows:


Sec.  431.466  Pumps labeling requirements.

    (a) General pumps. For the pumps described in Sec.  431.464(a), the 
following requirements apply to units manufactured on the same date 
that compliance is required with any applicable standards prescribed in 
Sec.  431.465.
    (1) Pump nameplate--(i) Required information. The permanent 
nameplate must be marked clearly with the following information:
    (A) For bare pumps and pumps sold with electric motors but not 
continuous or non-continuous controls, the rated pump energy index--
constant load (PEICL), and for pumps sold with motors and 
continuous or non-continuous controls, the rated pump energy index--
variable load (PEIVL);
    (B) The bare pump model number; and
    (C) If transferred directly to an end-user, the unit's impeller 
diameter, as distributed in commerce. Otherwise, a space must be 
provided for the impeller diameter to be filled in.
    (ii) Display of required information. All orientation, spacing, 
type sizes, typefaces, and line widths to display this required 
information must be the same as or similar to the display of the other 
performance data on the pump's permanent nameplate. The 
PEICL or PEIVL, as appropriate to a given pump 
model, must be identified in the form ``PEICL ____'' or 
``PEIVL ____.'' The model number must be in one of the 
following forms: ``Model ____'' or ``Model number ____'' or ``Model No. 
____.'' The unit's impeller diameter must be in the form ``Imp. Dia. 
____(in.).''
    (2) Disclosure of efficiency information in marketing materials. 
(i) The same information that must appear on a pump's permanent 
nameplate pursuant to paragraph (a)(1)(i) of this section, must also be 
prominently displayed:
    (A) On each page of a catalog that lists the pump; and
    (B) In other materials used to market the pump.
    (ii) [Reserved]

[[Page 36924]]

    (b) Dedicated-purpose pool pumps. For the pumps described in Sec.  
431.464(b), the following requirements apply on the same date that 
compliance is required with any applicable standards prescribed in 
Sec.  431.465.
    (1) Pump nameplate--(i) Required information. The permanent 
nameplate must be marked clearly with the following information:
    (A) The weighted energy factor (WEF); and
    (B) The dedicated-purpose pool pump motor total horsepower.
    (ii) Display of required information. All orientation, spacing, 
type sizes, typefaces, and line widths to display this required 
information must be the same as or similar to the display of the other 
performance data on the pump's permanent nameplate.
    (A) The WEF must be identified in the form ``WEF ____.''
    (B) The dedicated-purpose pool pump motor total horsepower must be 
identified in one of the following forms: ``Dedicated-purpose pool pump 
motor total horsepower _____,'' ``DPPP motor total horsepower _____,'' 
``motor total horsepower _____,'' ``motor THP _____,'' or ``THP 
_____.''
    (2) [Reserved]

Appendix A to Subpart Y of Part 431 [Amended]

0
11. In the introductory note to appendix A of subpart Y of part 431, 
remove the reference ``10 CFR 431.464'' and add in its place ``10 CFR 
431.464(a)''.

0
12. Add appendices B and C to subpart Y of part 431 to read as follows:

Appendix B to Subpart Y of Part 431--Uniform Test Method for the 
Measurement of Energy Efficiency of Dedicated-Purpose Pool Pumps

    Note: On February 5, 2018 but before July 19, 2021, any 
representations made with respect to the energy use or efficiency of 
dedicated-purpose pool pumps subject to testing pursuant to 10 CFR 
431.464(b) must be made in accordance with the results of testing 
pursuant to this appendix. Any optional representations of energy 
factor (EF) must be accompanied by a representation of weighted 
energy factor (WEF).

I. Test Procedure for Dedicated-Purpose Pool Pumps

A. General

    A.1 Test Method. To determine the weighted energy factor (WEF) 
for dedicated-purpose pool pumps, perform ``wire-to-water'' testing 
in accordance with HI 40.6-2014-B, except section 40.6.4.1, 
``Vertically suspended pumps''; section 40.6.4.2, ``Submersible 
pumps''; section 40.6.5.3, ``Test report''; section 40.6.5.5, ``Test 
conditions''; section 40.6.5.5.2, ``Speed of rotation during 
testing''; section 40.6.6.1, ``Translation of test results to rated 
speed of rotation''; section 40.6.6.2, ``Pump efficiency''; section 
40.6.6.3, ``Performance curve''; section A.7, ``Testing at 
temperatures exceeding 30 [deg]C (86[emsp14][deg]F)''; and appendix 
B, ``Reporting of test results''; (incorporated by reference, see 
Sec.  431.463) with the modifications and additions as noted 
throughout the provisions below. Do not use the test points 
specified in section 40.6.5.5.1, ``Test procedure'' of HI 40.6-2014-
B and instead use those test points specified in section D.3 of this 
appendix for the applicable dedicated-purpose pool pump variety and 
speed configuration. When determining overall efficiency, best 
efficiency point, or other applicable pump energy performance 
information, section 40.6.5.5.1, ``Test procedure''; section 
40.6.6.2, ``Pump efficiency''; and section 40.6.6.3, ``Performance 
curve'' must be used, as applicable. For the purposes of applying 
this appendix, the term ``volume per unit time,'' as defined in 
section 40.6.2, ``Terms and definitions,'' of HI 40.6-2014-B shall 
be deemed to be synonymous with the term ``flow rate'' used 
throughout that standard and this appendix.
    A.2. Calculations and Rounding. All terms and quantities refer 
to values determined in accordance with the procedures set forth in 
this appendix for the rated pump. Perform all calculations using raw 
measured values without rounding. Round WEF, EF, maximum head, 
vertical lift, and true priming time values to the tenths place 
(i.e., 0.1) and rated hydraulic horsepower to the thousandths place 
(i.e., 0.001). Round all other reported values to the hundredths 
place unless otherwise specified.

B. Measurement Equipment

    B.1 For the purposes of measuring flow rate, speed of rotation, 
temperature, and pump power output, the equipment specified in HI 
40.6-2014-B Appendix C (incorporated by reference, see Sec.  
431.463) necessary to measure head, speed of rotation, flow rate, 
and temperature must be used and must comply with the stated 
accuracy requirements in HI 40.6-2014-B Table 40.6.3.2.3, except as 
specified in section B.1.1 and B.1.2 of this appendix. When more 
than one instrument is used to measure a given parameter, the 
combined accuracy, calculated as the root sum of squares of 
individual instrument accuracies, must meet the specified accuracy 
requirements.
    B.1.1 Electrical measurement equipment for determining the 
driver power input to the motor or controls must be capable of 
measuring true root mean squared (RMS) current, true RMS voltage, 
and real power up to the 40th harmonic of fundamental supply source 
frequency, and have a combined accuracy of 2.0 percent 
of the measured value at the fundamental supply source frequency.
    B.1.2 Instruments for measuring distance (e.g., height above the 
reference plane or water level) must be accurate to and have a 
resolution of at least 0.1 inch.
    B.2 Calibration. Calibration requirements for instrumentation 
are specified in appendix D of HI 40.6-2014-B (incorporated by 
reference, see Sec.  431.463). Historical calibration data may be 
used to justify time periods up to three times longer than those 
specified in table D.1 of HI 40.6-2014-B provided the supporting 
historical data shows maintenance of calibration of the given 
instrument up to the selected extended calibration interval on at 
least two unique occasions, based on the interval specified in HI 
40.6-2014-B.

C. Test Conditions and Tolerances

    C.1 Pump Specifications. Conduct testing at full impeller 
diameter in accordance with the test conditions, stabilization 
requirements, and specifications of HI 40.6-2014-B section 40.6.3, 
``Pump efficiency testing''; section 40.6.4, ``Considerations when 
determining the efficiency of a pump''; section 40.6.5.4 (including 
appendix A), ``Test arrangements''; and section 40.6.5.5, ``Test 
conditions'' (incorporated by reference, see Sec.  431.463).
    C.2 Power Supply Requirements. The following conditions also 
apply to the mains power supplied to the DPPP motor or controls, if 
any:
    (1) Maintain the voltage within 5 percent of the 
rated value of the motor,
    (2) Maintain the frequency within 1 percent of the 
rated value of the motor,
    (3) Maintain the voltage unbalance of the power supply within 
3 percent of the value with which the motor was rated, 
and
    (4) Maintain total harmonic distortion below 12 percent 
throughout the test.
    C.3 Test Conditions. Testing must be carried out with water that 
is between 50 and 107 [deg]F with less than or equal to 15 
nephelometric turbidity units (NTU).
    C.4 Tolerances. For waterfall pumps, multi-speed self-priming 
and non-self-priming pool filter pumps, and variable-speed self-
priming and non-self-priming pool filter pumps all measured load 
points must be within 2.5 percent of the specified head 
value and comply with any specified flow values or thresholds. For 
all other dedicated-purpose pool pumps, all measured load points 
must be within the greater of 2.5 percent of the 
specified flow rate values or 0.5 gpm and comply with 
any specified head values or thresholds.

D. Data Collection and Stabilization

    D.1 Damping Devices. Use of damping devices, as described in 
section 40.6.3.2.2 of HI 40.6-2014-B (incorporated by reference, see 
Sec.  431.463), are only permitted to integrate up to the data 
collection interval used during testing.
    D.2 Stabilization. Record data at any tested load point only 
under stabilized conditions, as defined in HI 40.6-2014-B section 
40.6.5.5.1 (incorporated by reference, see Sec.  431.463), where a 
minimum of two measurements are used to determine stabilization.
    D.3 Test Points. Measure the flow rate in gpm, pump total head 
in ft, the driver power input in W, and the speed of rotation in rpm 
at each load point specified in Table 1 of this appendix for each 
DPPP variety and speed configuration:

[[Page 36925]]



                                 Table 1--Load Points (i) and Weights (wi) for Each DPPP Variety and Speed Configuration
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                              Number of                                             Test points
                                                                 load                     --------------------------------------------------------------
           DPPP varieties             Speed configuration(s)    points    Load point (i)
                                                                 (n)                         Flow rate (Q) (GPM)    Head (H) (ft)       Speed (rpm)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Self-Priming Pool Filter Pumps And   Single-speed dedicated-          1  High............  Qhigh (gpm) =           H = 0.0082 x    Maximum speed
 Non-Self-Priming Pool Filter Pumps.  purpose pool pumps and                                Qmax_speed@C **         Qhigh\2\
                                      all self-priming and
                                      non-self-priming pool
                                      filter pumps not
                                      meeting the definition
                                      of two-*, multi-, or
                                      variable-speed
                                      dedicated-purpose pool
                                      pump.
                                     Two-speed dedicated-             2  Low.............  Qlow (gpm) = Flow rate  H = 0.0082 x    Lowest speed capable
                                      purpose pool pumps *.                                 associated with         Qlow\2\         of meeting the
                                                                                            specified head and                      specified flow and
                                                                                            speed that is not                       head values, if any
                                                                                            below:                                  ***.
                                                                                            31.1 gpm if
                                                                                            rated hydraulic
                                                                                            horsepower is >0.75
                                                                                            or
                                                                                            24.7 gpm if
                                                                                            rated hydraulic
                                                                                            horsepower is <=0.75
                                                                         High............  Qhigh (gpm) =           H = 0.0082 x    Maximum speed.
                                                                                            Qmax_speed@C **         Qhigh\2\
                                     Multi-speed and                  2  Low.............  Qlow (gpm) =            H = 0.0082 x    Lowest speed capable
                                      variable-speed                                        If rated        Qlow\2\         of meeting the
                                      dedicated-purpose pool                                hydraulic horsepower                    specified flow and
                                      pumps.                                                is >0.75, then Qlow                     head values.
                                                                                            >= 31.1 gpm
                                                                                            If rated
                                                                                            hydraulic horsepower
                                                                                            is <=0.75, then Qlow
                                                                                            >=24.7 gpm
                                                                         High............  Qhigh (gpm) >=0.8 x     H = 0.0082 x    Lowest speed capable
                                                                                            Qmax_speed@C **         Qhigh\2\        of meeting the
                                                                                                                                    specified flow and
                                                                                                                                    head values.
Waterfall Pumps....................  Single-speed dedicated-          1  High............  Qlow (gpm) = Flow       17.0 ft         Maximum speed.
                                      purpose pool pumps.                                   corresponding to
                                                                                            specified head
Pressure Cleaner Booster Pumps.....  Any....................          1  High............  10.0 gpm                >=60.0 ft       Lowest speed capable
                                                                                                                                    of meeting the
                                                                                                                                    specified flow and
                                                                                                                                    head values.
--------------------------------------------------------------------------------------------------------------------------------------------------------
* In order to apply the test points for two-speed self-priming and non-self-priming pool filter pumps, self-priming pool filter pumps that are greater
  than or equal to 0.711 rated hydraulic horsepower that are two-speed dedicated-purpose pool pumps must also be distributed in commerce either: (1)
  With a pool pump control (variable speed drive and user interface or switch) that changes the speed in response to pre-programmed user preferences and
  allows the user to select the duration of each speed and/or the on/off times or (2) without a pool pump control that has such capability, but without
  which the pump is unable to operate. Two-speed self-priming pool filter pumps greater than or equal to 0.711 rated hydraulic horsepower that do not
  meet these requirements must be tested using the load point for single-speed self-priming or non-self-priming pool filter pumps, as appropriate.
** Qmax_speed@C = Flow at max speed on curve C (gpm)
*** If a two-speed pump has a low speed that results in a flow rate below the specified values, the low speed of that pump shall not be tested.

E. Calculations

    E.1 Determination of Weighted Energy Factor. Determine the WEF 
as a ratio of the measured flow and driver power input to the 
dedicated-purpose pool pump in accordance with the following 
equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.010

Where:

WEF = Weighted Energy Factor in kgal/kWh;
wi = weighting factor at each load point i, as specified in section 
E.2 of this appendix;
Qi = flow at each load point i, in gpm;
Pi = driver power input to the motor (or controls, if present) at 
each load point i, in watts;
i = load point(s), defined uniquely for each DPPP variety and speed 
configuration as specified in section D.3 of this appendix; and
n = number of load point(s), defined uniquely for each DPPP variety 
and speed configuration as specified in section D.3 of this 
appendix.

    E.2 Weights. When determining WEF, apply the weights specified 
in Table 2 of this appendix for the applicable load points, DPPP 
varieties, and speed configurations:

                                        Table 2--Load Point Weights (wi)
----------------------------------------------------------------------------------------------------------------
                                                                                          Load point(s) i
                DPPP varieties                       Speed configuration(s)      -------------------------------
                                                                                     Low flow        High flow
----------------------------------------------------------------------------------------------------------------
Self-Priming Pool Filter Pumps and Non-Self-   Single-speed dedicated-purpose     ..............             1.0
 Priming Pool Filter Pumps.                     pool pumps and all self-priming
                                                and non-self-priming pool filter
                                                pumps not meeting the definition
                                                of two-,* multi-, or variable-
                                                speed dedicated-purpose pool
                                                pump.
                                               Two-speed dedicated-purpose pool             0.80            0.20
                                                pumps *.
                                               Multi-speed and variable-speed               0.80            0.20
                                                dedicated-purpose pool pumps.
Waterfall Pumps..............................  Single-speed dedicated-purpose     ..............             1.0
                                                pool pumps.

[[Page 36926]]

 
Pressure Cleaner Booster Pump................  Any..............................  ..............             1.0
----------------------------------------------------------------------------------------------------------------
* In order to apply the test points for two-speed self-priming and non-self-priming pool filter pumps, self-
  priming pool filter pumps that are greater than or equal to 0.711 rated hydraulic horsepower that are two-
  speed dedicated-purpose pool pumps must also be distributed in commerce either: (1) With a pool pump control
  (variable speed drive and user interface or switch) that changes the speed in response to pre-programmed user
  preferences and allows the user to select the duration of each speed and/or the on/off times or (2) without a
  pool pump control that has such capability, but without which the pump is unable to operate. Two-speed self-
  priming pool filter pumps greater than or equal to 0.711 rated hydraulic horsepower that do not meet these
  requirements must be tested using the load point for single-speed self-priming or non-self-priming pool filter
  pumps, as appropriate.

    E.3 Determination of Horsepower and True Power Factor Metrics
    E.3.1 Determine the pump power output at any load point i using 
the following equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.011

Where:

Pu,i = the measured pump power output at load point i of the tested 
pump, in hp;
Qi = the measured flow rate at load point i of the tested pump, in 
gpm;
Hi = pump total head at load point i of the tested pump, in ft; and
SG = the specific gravity of water at specified test conditions, 
which is equivalent to 1.00.

    E.3.1.1 Determine the rated hydraulic horsepower as the pump 
power output measured on the reference curve at maximum rotating 
speed and full impeller diameter for the rated pump.
    E.3.2 For dedicated-purpose pool pumps with single-phase AC 
motors or DC motors, determine the dedicated-purpose pool pump 
nominal motor horsepower as the product of the measured full load 
speed and torque, adjusted to the appropriate units, as shown in the 
following equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.012

Where:

Pnm = the dedicated-purpose pool pump nominal total horsepower at 
full load, in hp;
T = output torque at full load, in lb-ft; and
n = the motor speed at full load, in rpm.

    Full-load speed and torque shall be determined based on the 
maximum continuous duty motor power output rating allowable for the 
motor's nameplate ambient rating and insulation class.
    E.3.2.1 For single-phase AC motors, determine the measured speed 
and torque at full load according to either section E.3.2.1.1 or 
E.3.2.1.2 of this appendix.
    E.3.2.1.1 Use the procedures in section 3.2, ``Tests with 
load''; section 4 ``Testing facilities''; section 5.2 ``Mechanical 
measurements''; section 5.3 ``Temperature measurements''; and 
section 6 ``Tests'' of IEEE 114-2010 (incorporated by reference, see 
Sec.  431.463), or
    E.3.2.1.2 Use the applicable procedures in section 5, ``General 
test requirements'' and section 6, ``Tests'' of CSA C747-2009 (RA 
2014); except in section 6.4(b) the conversion factor shall be 5252, 
only measurements at full load are required in section 6.5, and 
section 6.6 shall be disregarded (incorporated by reference, see 
Sec.  431.463).
    E.3.2.2 For DC motors, determine the measured speed and torque 
at full load according to either section E.3.2.2.1 or E.3.2.2.2 of 
this appendix.
    E.3.2.2.1 Use the procedures in section 3.1, ``Instrument 
Selection Factors''; section 3.4 ``Power Measurement'': Section 3.5 
``Power Sources''; section 4.1.2 ``Ambient Air''; section 4.1.4 
``Direction of Rotation''; section 5.4.1 ``Reference Conditions''; 
and section 5.4.3.2 ``Dynomometer or Torquemeter Method'' of IEEE 
113-1985 (incorporated by reference, see Sec.  431.463), or
    E.3.2.2.2 Use the applicable procedures in section 5, ``General 
test requirements'' and section 6, ``Tests'' of CSA C747-2009 (RA 
2014); except in section 6.4(b) the conversion factor shall be 5252, 
only measurements at full load are required in section 6.5, and 
section 6.6 shall be disregarded (incorporated by reference, see 
Sec.  431.463).
    E.3.3 For dedicated-purpose pool pumps with single-phase AC 
motors or DC motors, the dedicated-purpose pool pump service factor 
is equal to 1.0.
    E.3.4 Determine the dedicated-purpose pool pump motor total 
horsepower according to section E.3.4.1 of this appendix for 
dedicated-purpose pool pumps with single-phase AC motors or DC 
motors and section E.3.4.2 of this appendix for dedicated-purpose 
pool pumps with polyphase AC motors.
    E.3.4.1 For dedicated-purpose pool pumps with single-phase AC 
motors or DC motors, determine the dedicated-purpose pool pump motor 
total horsepower as the product of the dedicated-purpose pool pump 
nominal motor horsepower, determined in accordance with section 
E.3.2 of this appendix, and the dedicated-purpose pool pump service 
factor, determined in accordance with section E.3.3 of this 
appendix.
    E.3.4.2 For dedicated-purpose pool pumps with polyphase AC 
induction motors, determine the dedicated-purpose pool pump motor 
total horsepower as the product of the rated nominal motor 
horsepower and the rated service factor of the motor.
    E.3.5 Determine the true power factor at each applicable load 
point specified in Table 1 of this appendix for each DPPP variety 
and speed configuration as a ratio of driver power input to the 
motor (or controls, if present) (Pi), in watts, divided by the 
product of the voltage in volts and the current in amps at each load 
point i, as shown in the following equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.013

Where:

PFi = true power factor at each load point i, dimensionless;
Pi = driver power input to the motor (or controls, if present) at 
each load point i, in watts;
Vi = voltage at each load point i, in volts;
Ii = current at each load point i, in amps; and
i = load point(s), defined uniquely for each DPPP variety and speed 
configuration as specified in section D.3 of this appendix.

    E.4 Determination of Maximum Head. Determine the maximum head 
for self-priming pool filter pumps, non-self-priming pool filter 
pumps, and waterfall pumps by measuring the head at maximum speed 
and the minimum flow rate at which the pump is designed to operate 
continuously or safely, where the minimum flow rate is assumed to be 
zero unless stated otherwise in the manufacturer literature.

F. Determination of Self-Priming Capability

    F.1 Test Method. Determine the vertical lift and true priming 
time of non-self-priming pool filter pumps and self-priming pool 
filter pumps that are not already certified as self-priming under 
NSF/ANSI 50-2015 (incorporated by reference, see Sec.  431.463) by 
testing such pumps pursuant to section C.3 of appendix C of NSF/ANSI 
50-2015, except for the modifications and exceptions listed in the 
following sections F.1.1 through F.1.5 of this appendix:
    F.1.1 Where section C.3.2, ``Apparatus,'' and section C.3.4, 
``Self-priming capability test method,'' of NSF/ANSI 50-2015 
(incorporated by reference, see Sec.  431.463) state that the 
``suction line must be essentially as shown in annex C, figure 
C.1;'' the phrase ``essentially as shown in Annex C, figure C.1'' 
means:
     The centerline of the pump impeller shaft is situated a 
vertical distance equivalent to the specified vertical lift (VL), 
calculated in accordance with section F.1.1.1. of this appendix, 
above the water level of a water tank of sufficient volume as to 
maintain a constant water surface level for the duration of the 
test;

[[Page 36927]]

     The pump draws water from the water tank with a riser 
pipe that extends below the water level a distance of at least 3 
times the riser pipe diameter (i.e., 3 pipe diameters);
     The suction inlet of the pump is at least 5 pipe 
diameters from any obstructions, 90[deg] bends, valves, or fittings; 
and
     The riser pipe is of the same pipe diameter as the pump 
suction inlet.
    F.1.1.1 The vertical lift (VL) must be normalized to 5.0 feet at 
an atmospheric pressure of 14.7 psia and a water density of 62.4 lb/
ft\3\ in accordance with the following equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.014

Where:

VL = vertical lift of the test apparatus from the waterline to the 
centerline of the pump impeller shaft, in ft;
[rho]test = density of test fluid, in lb/ft\3\; and
Pabs,test = absolute barometric pressure of test apparatus location 
at centerline of pump impeller shaft, in psia.

    F.1.2 The equipment accuracy requirements specified in section 
B, ``Measurement Equipment,'' of this appendix also apply to this 
section F, as applicable.
    F.1.2.1 All measurements of head (gauge pressure), flow, and 
water temperature must be taken at the pump suction inlet and all 
head measurements must be normalized back to the centerline of the 
pump impeller shaft in accordance with section A.3.1.3.1 of HI 40.6-
2014-B (incorporated by reference, see Sec.  431.463).
    F.1.3 All tests must be conducted with clear water that meets 
the requirements adopted in section C.3 of this appendix.
    F.1.4 In section C.3.4, ``Self-priming capability test method,'' 
of NSF/ANSI 50-2015 (incorporated by reference, see Sec.  431.463), 
``the elapsed time to steady discharge gauge reading or full 
discharge flow'' is determined when the changes in head and flow, 
respectively, are within the tolerance values specified in table 
40.6.3.2.2, ``Permissible amplitude of fluctuation as a percentage 
of mean value of quantity being measured at any test point,'' of HI 
40.6-2014-B (incorporated by reference, see Sec.  431.463). The 
measured priming time (MPT) is determined as the point in time when 
the stabilized load point is first achieved, not when stabilization 
is determined. In addition, the true priming time (TPT) is 
equivalent to the MPT.
    F.1.5 The maximum true priming time for each test run must not 
exceed 10.0 minutes. Disregard section C.3.5 of NSF/ANSI 50-2015 
(incorporated by reference, see Sec.  431.463).

G. Optional Testing and Calculations

    G.1 Energy Factor. When making representations regarding the EF 
of dedicated-purpose pool pumps, determine EF on one of four system 
curves (A, B, C, or D) and at any given speed (s) according to the 
following equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.015

Where:

EFX,s = the energy factor on system curve X at speed s in gal/Wh;
X = one of four possible system curves (A, B, C, or D), as defined 
in section G.1.1 of this appendix;
s = the tested speed, in rpm;
QX,s = flow rate measured on system curve X at speed s in gpm; and
PX,s = driver power input to the motor (or controls, if present) on 
system curve X at speed s in watts.

    G.1.1 System Curves. The energy factor may be determined at any 
speed (s) and on any of the four system curves A, B, C, and/or D 
specified in the Table 3:

         Table 3--Systems Curves for Optional EF Test Procedure
------------------------------------------------------------------------
               System curve                    System curve equation *
------------------------------------------------------------------------
A.........................................  H = 0.0167 x Q\2\
B.........................................  H = 0.0500 x Q\2\
C.........................................  H = 0.0082 x Q\2\
D.........................................  H = 0.0044 x Q\2\
------------------------------------------------------------------------
* In the above table, Q refers to the flow rate in gpm and H refers to
  head in ft.

    G.2 Replacement Dedicated-Purpose Pool Pump Motors. To determine 
the WEF for replacement DPPP motors, test each replacement DPPP 
motor paired with each dedicated-purpose pool pump bare pump for 
which the replacement DPPP motor is advertised to be paired, as 
stated in the manufacturer's literature for that replacement DPPP 
motor model, according to the testing and calculations described in 
sections A, B, C, D, and E of this appendix. Alternatively, each 
replacement DPPP motor may be tested with the most consumptive 
dedicated-purpose pool pump bare pump for which it is advertised to 
be paired, as stated in the manufacturer's literature for that 
replacement DPPP motor model. If a replacement DPPP motor is not 
advertised to be paired with any specific dedicated-purpose pool 
pump bare pumps, test with the most consumptive dedicated-purpose 
pool pump bare pump available.

Appendix C to Subpart Y of Part 431--Uniform Test Method for the 
Measurement of Energy Efficiency of Dedicated-Purpose Pool Pumps

    Note: Any representations made on or after July 19, 2021, with 
respect to the energy use or efficiency of dedicated-purpose pool 
pumps subject to testing pursuant to 10 CFR 431.464(b) must be made 
in accordance with the results of testing pursuant to this appendix.

I. Test Procedure for Dedicated-Purpose Pool Pumps

A. General

    A.1 Test Method. To determine the weighted energy factor (WEF) 
for dedicated-purpose pool pumps, perform ``wire-to-water'' testing 
in accordance with HI 40.6-2014-B, except section 40.6.4.1, 
``Vertically suspended pumps''; section 40.6.4.2, ``Submersible 
pumps''; section 40.6.5.3, ``Test report''; section 40.6.5.5, ``Test 
conditions''; section 40.6.5.5.2, ``Speed of rotation during 
testing''; section 40.6.6.1, ``Translation of test results to rated 
speed of rotation''; section 40.6.6.2, ``Pump efficiency''; section 
40.6.6.3, ``Performance curve''; section A.7, ``Testing at 
temperatures exceeding 30 [deg]C (86[emsp14][deg]F)''; and appendix 
B, ``Reporting of test results''; (incorporated by reference, see 
Sec.  431.463) with the modifications and additions as noted 
throughout the provisions below. Do not use the test points 
specified in section 40.6.5.5.1, ``Test procedure'' of HI 40.6-2014-
B and instead use those test points specified in section D.3 of this 
appendix for the applicable dedicated-purpose pool pump variety and 
speed configuration. When determining overall efficiency, best 
efficiency point, or other applicable pump energy performance 
information, section 40.6.5.5.1, ``Test procedure''; section 
40.6.6.2, ``Pump efficiency''; and section 40.6.6.3,

[[Page 36928]]

``Performance curve'' must be used, as applicable. For the purposes 
of applying this appendix, the term ``volume per unit time,'' as 
defined in section 40.6.2, ``Terms and definitions,'' of HI 40.6-
2014-B shall be deemed to be synonymous with the term ``flow rate'' 
used throughout that standard and this appendix .
    A.2 Calculations and Rounding. All terms and quantities refer to 
values determined in accordance with the procedures set forth in 
this appendix for the rated pump. Perform all calculations using raw 
measured values without rounding. Round WEF, maximum head, vertical 
lift, and true priming time values to the tenths place (i.e., 0.1) 
and rated hydraulic horsepower to the thousandths place (i.e., 
0.001). Round all other reported values to the hundredths place 
unless otherwise specified.

B. Measurement Equipment

    B.1 For the purposes of measuring flow rate, speed of rotation, 
temperature, and pump power output, the equipment specified in HI 
40.6-2014-B Appendix C (incorporated by reference, see Sec.  
431.463) necessary to measure head, speed of rotation, flow rate, 
and temperature must be used and must comply with the stated 
accuracy requirements in HI 40.6-2014-B Table 40.6.3.2.3, except as 
specified in sections B.1.1 and B.1.2 of this appendix. When more 
than one instrument is used to measure a given parameter, the 
combined accuracy, calculated as the root sum of squares of 
individual instrument accuracies, must meet the specified accuracy 
requirements.
    B.1.1 Electrical measurement equipment for determining the 
driver power input to the motor or controls must be capable of 
measuring true root mean squared (RMS) current, true RMS voltage, 
and real power up to the 40th harmonic of fundamental supply source 
frequency, and have a combined accuracy of 2.0 percent 
of the measured value at the fundamental supply source frequency.
    B.1.2 Instruments for measuring distance (e.g., height above the 
reference plane or water level) must be accurate to and have a 
resolution of at least 0.1 inch.
    B.2 Calibration. Calibration requirements for instrumentation 
are specified in appendix D of HI 40.6-2014-B (incorporated by 
reference, see Sec.  431.463). Historical calibration data may be 
used to justify time periods up to three times longer than those 
specified in table D.1 of HI 40.6-2014-B provided the supporting 
historical data shows maintenance of calibration of the given 
instrument up to the selected extended calibration interval on at 
least two unique occasions, based on the interval specified in HI 
40.6-2014-B.

C. Test Conditions and Tolerances

    C.1 Pump Specifications. Conduct testing at full impeller 
diameter in accordance with the test conditions, stabilization 
requirements, and specifications of HI 40.6-2014-B section 40.6.3, 
``Pump efficiency testing''; section 40.6.4, ``Considerations when 
determining the efficiency of a pump''; section 40.6.5.4 (including 
appendix A), ``Test arrangements''; and section 40.6.5.5, ``Test 
conditions'' (incorporated by reference, see Sec.  431.463).
    C.2 Power Supply Requirements. The following conditions also 
apply to the mains power supplied to the DPPP motor or controls, if 
any:
    (1) Maintain the voltage within 5 percent of the 
rated value of the motor,
    (2) Maintain the frequency within 1 percent of the 
rated value of the motor,
    (3) Maintain the voltage unbalance of the power supply within 
3 percent of the value with which the motor was rated, 
and
    (4) Maintain total harmonic distortion below 12 percent 
throughout the test.
    C.3 Test Conditions. Testing must be carried out with water that 
is between 50 and 107 [deg]F with less than or equal to 15 
nephelometric turbidity units (NTU).
    C.4 Tolerances. For waterfall pumps, multi-speed self-priming 
and non-self-priming pool filter pumps, and variable-speed self-
priming and non-self-priming pool filter pumps all measured load 
points must be within 2.5 percent of the specified head 
value and comply with any specified flow values or thresholds. For 
all other dedicated-purpose pool pumps, all measured load points 
must be within the greater of 2.5 percent of the 
specified flow rate values or 0.5 gpm and comply with 
any specified head values or thresholds.

D. Data Collection and Stabilization

    D.1 Damping Devices. Use of damping devices, as described in 
section 40.6.3.2.2 of HI 40.6-2014-B (incorporated by reference, see 
Sec.  431.463), are only permitted to integrate up to the data 
collection interval used during testing.
    D.2 Stabilization. Record data at any tested load point only 
under stabilized conditions, as defined in HI 40.6-2014-B section 
40.6.5.5.1 (incorporated by reference, see Sec.  431.463), where a 
minimum of two measurements are used to determine stabilization.
    D.3 Test Points. Measure the flow rate in gpm, pump total head 
in ft, the driver power input in W, and the speed of rotation in rpm 
at each load point specified in Table 1 of this appendix for each 
DPPP variety and speed configuration:

                                 Table 1--Load Points (i) and Weights (wi) for Each DPPP Variety and Speed Configuration
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                              Number of                                             Test points
                                                                 load                     --------------------------------------------------------------
           DPPP varieties             Speed configuration(s)    points    Load point (i)
                                                                 (n)                         Flow rate (Q) (GPM)    Head (H) (ft)       Speed (rpm)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Self-Priming Pool Filter Pumps And   Single-speed dedicated-          1  High............  Qhigh (gpm) =           H = 0.0082 x    Maximum speed.
 Non-Self-Priming Pool Filter Pumps.  purpose pool pumps and                                Qmax_speed@C **         Qhigh\2\
                                      all self-priming and
                                      non-self-priming pool
                                      filter pumps not
                                      meeting the definition
                                      of two-*, multi-, or
                                      variable-speed
                                      dedicated-purpose pool
                                      pump.
                                     Two-speed dedicated-             2  Low.............  Qlow (gpm) = Flow rate  H = 0.0082 x    Lowest speed capable
                                      purpose pool pumps *.                                 associated with         Qlow\2\         of meeting the
                                                                                            specified head and                      specified flow and
                                                                                            speed that is not                       head values, if any.
                                                                                            below:                                  ***
                                                                                            31.1 gpm if
                                                                                            rated hydraulic
                                                                                            horsepower is >0.75
                                                                                            or
                                                                                            24.7 gpm if
                                                                                            rated hydraulic
                                                                                            horsepower is <=0.75
                                                                         High............  Qhigh (gpm) =           H = 0.0082 x    Maximum speed.
                                                                                            Qmax_speed@C **         Qlow\2\
                                     Multi-speed and                  2  Low.............  Qlow (gpm) =            H = 0.0082 x    Lowest speed capable
                                      variable-speed                                        If rated        Qlow\2\         of meeting the
                                      dedicated-purpose pool                                hydraulic horsepower                    specified flow and
                                      pumps.                                                is >0.75, then Qlow                     head values.
                                                                                            >=31.1 gpm
                                                                                            If rated
                                                                                            hydraulic horsepower
                                                                                            is <=0.75, then Qlow
                                                                                            >=24.7 gpm
                                                                         High............  Qhigh (gpm) >=0.8 x     H = 0.0082 x    Lowest speed capable
                                                                                            Qmax_speed@C **         Qhigh\2\        of meeting the
                                                                                                                                    specified flow and
                                                                                                                                    head values.

[[Page 36929]]

 
Waterfall Pumps....................  Single-speed dedicated-          1  High............  Qlow (gpm) = Flow       17.0 ft         Maximum speed.
                                      purpose pool pumps.                                   corresponding to
                                                                                            specified head
Pressure Cleaner Booster Pumps.....  Any....................          1  High............  10.0 gpm                >=60.0 ft       Lowest speed capable
                                                                                                                                    of meeting the
                                                                                                                                    specified flow and
                                                                                                                                    head values.
--------------------------------------------------------------------------------------------------------------------------------------------------------
* In order to apply the test points for two-speed self-priming and non-self-priming pool filter pumps, self-priming pool filter pumps that are greater
  than or equal to 0.711 rated hydraulic horsepower that are two-speed dedicated-purpose pool pumps must also be distributed in commerce either: (1)
  With a pool pump control (variable speed drive and user interface or switch) that changes the speed in response to pre-programmed user preferences and
  allows the user to select the duration of each speed and/or the on/off times or (2) without a pool pump control that has such capability, but without
  which the pump is unable to operate. Two-speed self-priming pool filter pumps greater than or equal to 0.711 rated hydraulic horsepower that do not
  meet these requirements must be tested using the load point for single-speed self-priming or non-self-priming pool filter pumps, as appropriate.
** Qmax_speed@C = Flow at max speed on curve C (gpm).
*** If a two-speed pump has a low speed that results in a flow rate below the specified values, the low speed of that pump shall not be tested.

E. Calculations

    E.1 Determination of Weighted Energy Factor. Determine the WEF 
as a ratio of the measured flow and driver power input to the 
dedicated-purpose pool pump in accordance with the following 
equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.016

Where:

WEF = Weighted Energy Factor in kgal/kWh;
Wi = weighting factor at each load point i, as specified in section 
E.2 of this appendix;
Qi = flow at each load point i, in gpm;
Pi = driver power input to the motor (or controls, if present) at 
each load point i, in watts;
i = load point(s), defined uniquely for each DPPP variety and speed 
configuration as specified in section D.3 of this appendix; and
n = number of load point(s), defined uniquely for each DPPP variety 
and speed configuration as specified in section D.3 of this 
appendix.

    E.2 Weights. When determining WEF, apply the weights specified 
in Table 2 of this appendix for the applicable load points, DPPP 
varieties, and speed configurations:

                                        Table 2--Load Point Weights (wi)
----------------------------------------------------------------------------------------------------------------
                                                                                          Load point(s) i
                DPPP varieties                       Speed configuration(s)      -------------------------------
                                                                                     Low flow        High flow
----------------------------------------------------------------------------------------------------------------
Self-Priming Pool Filter Pumps and Non-Self-   Single-speed dedicated-purpose     ..............             1.0
 Priming Pool Filter Pumps.                     pool pumps and all self-priming
                                                and non-self-priming pool filter
                                                pumps not meeting the definition
                                                of two-*, multi-, or variable-
                                                speed dedicated-purpose pool
                                                pump.
                                               Two-speed dedicated-purpose pool             0.80            0.20
                                                pumps *.
                                               Multi-speed and variable-speed               0.80            0.20
                                                dedicated-purpose pool pumps.
Waterfall Pumps..............................  Single-speed dedicated-purpose     ..............             1.0
                                                pool pumps.
Pressure Cleaner Booster Pump................  Any..............................  ..............             1.0
----------------------------------------------------------------------------------------------------------------
* In order to apply the test points for two-speed self-priming and non-self-priming pool filter pumps, self-
  priming pool filter pumps that are greater than or equal to 0.711 rated hydraulic horsepower that are two-
  speed dedicated-purpose pool pumps must also be distributed in commerce either: (1) With a pool pump control
  (variable speed drive and user interface or switch) that changes the speed in response to pre-programmed user
  preferences and allows the user to select the duration of each speed and/or the on/off times or (2) without a
  pool pump control that has such capability, but without which the pump is unable to operate. Two-speed self-
  priming pool filter pumps greater than or equal to 0.711 rated hydraulic horsepower that do not meet these
  requirements must be tested using the load point for single-speed self-priming or non-self-priming pool filter
  pumps, as appropriate.

    E.3 Determination of Horsepower and True Power Factor Metrics
    E.3.1 Determine the pump power output at any load point i using 
the following equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.017

Where:

Pu,i = the measured pump power output at load point i of the tested 
pump, in hp;
Qi = the measured flow rate at load point i of the tested pump, in 
gpm;
Hi = pump total head at load point i of the tested pump, in ft; and
SG = the specific gravity of water at specified test conditions, 
which is equivalent to 1.00.

    E.3.1.1 Determine the rated hydraulic horsepower as the pump 
power output measured on the reference curve at maximum rotating 
speed and full impeller diameter for the rated pump.
    E.3.2 For dedicated-purpose pool pumps with single-phase AC 
motors or DC motors, determine the dedicated-purpose pool pump 
nominal motor horsepower as the product of the measured full load 
speed and torque, adjusted to the appropriate units, as shown in the 
following equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.018

Where:

Pnm = the dedicated-purpose pool pump nominal total horsepower at 
full load, in hp;
T = output torque at full load, in lb-ft; and
n = the motor speed at full load, in rpm.

    Full-load speed and torque shall be determined based on the 
maximum continuous duty motor power output rating allowable for the 
motor's nameplate ambient rating and insulation class.
    E.3.2.1 For single-phase AC motors, determine the measured speed 
and torque at

[[Page 36930]]

full load according to either section E.3.2.1.1 or E.3.2.1.2 of this 
appendix.
    E.3.2.1.1 Use the procedures in section 3.2, ``Tests with 
load''; section 4 ``Testing facilities''; section 5.2 ``Mechanical 
measurements''; section 5.3 ``Temperature measurements''; and 
section 6 ``Tests'' of IEEE 114-2010 (incorporated by reference, see 
Sec.  431.463), or
    E.3.2.1.2 Use the applicable procedures in section 5, ``General 
test requirements'' and section 6, ``Tests'' of CSA C747-2009 (RA 
2014); except in section 6.4(b) the conversion factor shall be 5252, 
only measurements at full load are required in section 6.5, and 
section 6.6 shall be disregarded (incorporated by reference, see 
Sec.  431.463).
    E.3.2.2 For DC motors, determine the measured speed and torque 
at full load according to either section E.3.2.2.1 or E.3.2.2.2 of 
this appendix.
    E.3.2.2.1 Use the procedures in section 3.1, ``Instrument 
Selection Factors''; section 3.4 ``Power Measurement'': Section 3.5 
``Power Sources''; section 4.1.2 ``Ambient Air''; section 4.1.4 
``Direction of Rotation''; section 5.4.1 ``Reference Conditions''; 
and section 5.4.3.2 ``Dynomometer or Torquemeter Method'' of IEEE 
113-1985 (incorporated by reference, see Sec.  431.463), or
    E.3.2.2.2 Use the applicable procedures in section 5, ``General 
test requirements'' and section 6, ``Tests'' of CSA C747-2009 (RA 
2014); except in section 6.4(b) the conversion factor shall be 5252, 
only measurements at full load are required in section 6.5, and 
section 6.6 shall be disregarded (incorporated by reference, see 
Sec.  431.463).
    E.3.3 For dedicated-purpose pool pumps with single-phase AC 
motors or DC motors, the dedicated-purpose pool pump service factor 
is equal to 1.0.
    E.3.4 Determine the dedicated-purpose pool pump motor total 
horsepower according to section E.3.4.1 of this appendix for 
dedicated-purpose pool pumps with single-phase AC motors or DC 
motors and section E.3.4.2 of this appendix for dedicated-purpose 
pool pumps with polyphase AC motors.
    E.3.4.1 For dedicated-purpose pool pumps with single-phase AC 
motors or DC motors, determine the dedicated-purpose pool pump motor 
total horsepower as the product of the dedicated-purpose pool pump 
nominal motor horsepower, determined in accordance with section 
E.3.2 of this appendix, and the dedicated-purpose pool pump service 
factor, determined in accordance with section E.3.3 of this 
appendix.
    E.3.4.2 For dedicated-purpose pool pumps with polyphase AC 
induction motors, determine the dedicated-purpose pool pump motor 
total horsepower as the product of the rated nominal motor 
horsepower and the rated service factor of the motor.
    E.3.5 Determine the true power factor at each applicable load 
point specified in Table 1 of this appendix for each DPPP variety 
and speed configuration as a ratio of driver power input to the 
motor (or controls, if present) (Pi), in watts, divided by the 
product of the voltage in volts and the current in amps at each load 
point i, as shown in the following equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.019

Where:

PFi = true power factor at each load point i, dimensionless;
Pi = driver power input to the motor (or controls, if present) at 
each load point i, in watts;
Vi = voltage at each load point i, in volts;
Ii = current at each load point i, in amps; and
i = load point(s), defined uniquely for each DPPP variety and speed 
configuration as specified in section D.3 of this appendix.

    E.4 Determination of Maximum Head. Determine the maximum head 
for self-priming pool filter pumps, non-self-priming pool filter 
pumps, and waterfall pumps by measuring the head at maximum speed 
and the minimum flow rate at which the pump is designed to operate 
continuously or safely, where the minimum flow rate is assumed to be 
zero unless stated otherwise in the manufacturer literature.

F. Determination of Self-Priming Capability

    F.1 Test Method. Determine the vertical lift and true priming 
time of non-self-priming pool filter pumps and self-priming pool 
filter pumps that are not already certified as self-priming under 
NSF/ANSI 50-2015 (incorporated by reference, see Sec.  431.463) by 
testing such pumps pursuant to section C.3 of appendix C of NSF/ANSI 
50-2015, except for the modifications and exceptions listed in the 
following sections F.1.1 through F.1.5 of this appendix:
    F.1.1 Where section C.3.2, ``Apparatus,'' and section C.3.4, 
``Self-priming capability test method,'' of NSF/ANSI 50-2015 
(incorporated by reference, see Sec.  431.463) state that the 
``suction line must be essentially as shown in annex C, figure 
C.1;'' the phrase ``essentially as shown in Annex C, figure C.1'' 
means:
    (1) The centerline of the pump impeller shaft is situated a 
vertical distance equivalent to the specified vertical lift (VL), 
calculated in accordance with section F.1.1.1. of this appendix, 
above the water level of a water tank of sufficient volume as to 
maintain a constant water surface level for the duration of the 
test;
    (2) The pump draws water from the water tank with a riser pipe 
that extends below the water level a distance of at least 3 times 
the riser pipe diameter (i.e., 3 pipe diameters);
    (3) The suction inlet of the pump is at least 5 pipe diameters 
from any obstructions, 90[deg] bends, valves, or fittings; and
    (4) The riser pipe is of the same pipe diameter as the pump 
suction inlet.
    F.1.1.1 The vertical lift (VL) must be normalized to 5.0 feet at 
an atmospheric pressure of 14.7 psia and a water density of 62.4 lb/
ft\3\ in accordance with the following equation:
[GRAPHIC] [TIFF OMITTED] TR07AU17.020

Where:

VL = vertical lift of the test apparatus from the waterline to the 
centerline of the pump impeller shaft, in ft;
[rho]test = density of test fluid, in lb/ft\3\; and
Pabs,test = absolute barometric pressure of test apparatus location 
at centerline of pump impeller shaft, in psia.

    F.1.2 The equipment accuracy requirements specified in section 
B, ``Measurement Equipment,'' of this appendix also apply to this 
section F, as applicable.
    F.1.2.1 All measurements of head (gauge pressure), flow, and 
water temperature must be taken at the pump suction inlet and all 
head measurements must be normalized back to the centerline of the 
pump impeller shaft in accordance with section A.3.1.3.1 of HI 40.6-
2014-B (incorporated by reference, see Sec.  431.463).
    F.1.3 All tests must be conducted with clear water that meets 
the requirements adopted in section C.3 of this appendix.
    F.1.4 In section C.3.4, ``Self-priming capability test method,'' 
of NSF/ANSI 50-2015 (incorporated by reference, see Sec.  431.463), 
``the elapsed time to steady discharge gauge reading or full 
discharge flow'' is determined when the changes in head and flow, 
respectively, are within the tolerance values specified in table 
40.6.3.2.2, ``Permissible amplitude of fluctuation as a percentage 
of mean value of quantity being measured at any test point,'' of HI 
40.6-2014-B (incorporated by reference, see Sec.  431.463). The 
measured priming time (MPT) is determined as the point in time when 
the stabilized load point is first achieved, not when stabilization 
is determined. In addition, the true priming time (TPT) is 
equivalent to the MPT.
    F.1.5 The maximum true priming time for each test run must not 
exceed 10.0 minutes. Disregard section C.3.5 of NSF/ANSI 50-2015 
(incorporated by reference, see Sec.  431.463).

[[Page 36931]]

G. Optional Testing and Calculations

    G.1 Replacement Dedicated-Purpose Pool Pump Motors. To determine 
the WEF for replacement DPPP motors, test each replacement DPPP 
motor paired with each dedicated-purpose pool pump bare pump for 
which the replacement DPPP motor is advertised to be paired, as 
stated in the manufacturer's literature for that replacement DPPP 
motor model, according to the testing and calculations described in 
sections A, B, C, D, and E of this appendix. Alternatively, each 
replacement DPPP motor may be tested with the most consumptive 
dedicated-purpose pool pump bare pump for which it is advertised to 
be paired, as stated in the manufacturer's literature for that 
replacement DPPP motor model. If a replacement DPPP motor is not 
advertised to be paired with any specific dedicated-purpose pool 
pump bare pumps, test with the most consumptive dedicated-purpose 
pool pump bare pump available.

    Editorial note: This document was received for publication by 
the Office of the Federal Register on July 19, 2017.

[FR Doc. 2017-15464 Filed 8-4-17; 8:45 am]
BILLING CODE 6450-01-P