[Federal Register Volume 81, Number 182 (Tuesday, September 20, 2016)]
[Proposed Rules]
[Pages 64580-64654]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-21310]



[[Page 64579]]

Vol. 81

Tuesday,

No. 182

September 20, 2016

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; Proposed Rule

  Federal Register / Vol. 81 , No. 182 / Tuesday, September 20, 2016 / 
Proposed Rules  

[[Page 64580]]


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DEPARTMENT OF ENERGY

10 CFR Parts 429 and 431

[Docket Number 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: Notice of proposed rulemaking and announcement of public 
meeting.

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SUMMARY: The U.S. Department of Energy (DOE) proposes to establish new 
definitions, a new test procedure for dedicated-purpose pool pumps, new 
sampling and rating requirements, and new enforcement provisions for 
such equipment. Specifically, DOE proposes a test procedure for 
measuring the weighted energy factor (WEF) for certain varieties of 
dedicated-purpose pool pumps. The proposed test method incorporates by 
reference certain sections of the industry test standard Hydraulic 
Institute (HI) 40.6-2014, ``Methods for Rotodynamic Pump Efficiency 
Testing.'' The proposed definitions, test procedures, certification 
requirements, enforcement testing procedures, and labeling provisions 
are based on the recommendations of the dedicated-purpose pool pump 
(DPPP) Working Group, which was established under the Appliance 
Standards Rulemaking Federal Advisory Committee (ASRAC).

DATES: DOE will hold a public meeting on Monday, September 26, 2016 
from 10:00 a.m. to 2:00 p.m., in Washington, DC. The meeting will also 
be broadcast as a webinar. See section V, ``Public Participation,'' for 
webinar registration information, participant instructions, and 
information about the capabilities available to webinar participants.
    DOE will accept comments, data, and information regarding this 
notice of proposed rulemaking (NOPR) before and after the public 
meeting, but no later than November 21, 2016. See section V, ``Public 
Participation,'' for details.

ADDRESSES: The public meeting will be held at the U.S. Department of 
Energy, Forrestal Building, Room 4A-104, 1000 Independence Avenue SW., 
Washington, DC 20585. To attend, please notify the Appliance and 
Equipment Standards staff at (202) 586-6636 or 
[email protected].
    Any comments submitted must identify the Test Procedure NOPR for 
dedicated-purpose pool pumps, and provide docket number EERE-2016-BT-
TP-0002 and/or regulatory information number (RIN) number 1904-AD66. 
Comments may be submitted using any of the following methods:
    (1) Federal eRulemaking Portal: www.regulations.gov. Follow the 
instructions for submitting comments.
    (2) Email: [email protected]. Include the docket number 
and/or RIN in the subject line of the message.
    (3) Mail: Appliance and Equipment Standards Program, U.S. 
Department of Energy, Building Technologies Office, Mailstop EE-5B, 
1000 Independence Avenue SW., Washington, DC 20585-0121. If possible, 
please submit all items on a compact disc (CD), in which case it is not 
necessary to include printed copies.
    (4) Hand Delivery/Courier: Appliance and Equipment Standards 
Program, U.S. Department of Energy, Building Technologies Office, 950 
L'Enfant Plaza SW., 6th Floor, Washington, DC 20024. Telephone: (202) 
586-6636. If possible, please submit all items on a CD, in which case 
it is not necessary to include printed copies.
    For detailed instructions on submitting comments and additional 
information on the rulemaking process, see section V of this document 
(``Public Participation'').
    Docket: The docket, which includes Federal Register notices, public 
meeting attendee lists and transcripts, comments, and other supporting 
documents/materials, is available for review at regulations.gov. All 
documents in the docket are listed in the 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://www1.eere.energy.gov/buildings/appliance_standards/standards.aspx?productid=67. This Web page will contain a link to the 
docket for this document on the regulations.gov site. The 
regulations.gov Web page will contain simple instructions on how to 
access all documents, including public comments, in the docket. See 
section V for information on how to submit comments through 
regulations.gov.

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].
    Johanna Jochum, U.S. Department of Energy, Office of the General 
Counsel, GC-33, 1000 Independence Avenue SW., Washington, DC 20585-
0121. Telephone: (202) 287-6307. Email: [email protected].
    For further information on how to submit a comment, review other 
public comments and the docket, or participate in the public meeting, 
contact the Appliance and Equipment Standards Program staff at (202) 
586-6636 or by email: [email protected].

SUPPLEMENTARY INFORMATION: DOE proposes to update the incorporation by 
reference or newly incorporate by reference the following industry 
standards into 10 CFR part 431:
    (1) 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 
40.6.5.5.2, ``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 
[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) UL 1081, (``ANSI/UL 1081-2014''), ``Standard for Swimming Pool 
Pumps, Filters, and Chlorinators,'' 6th Edition, January 29, 2008, 
including revisions through March 18, 2014.
    Copies of American National Standards Institute (ANSI)/UL 1081-2014 
can be obtained from: UL, 333 Pfingsten Road, Northbrook, IL 60062, 
(847) 272-8800, or by visiting http://ul.com.
    (3) National Electrical Manufacturers Association (NEMA) MG-1 2014, 
``Motors and Generators,'' 2014, section 1.19, ``Polyphase Motors''; 
section 10.34, ``Basis of Horsepower Rating''; section 10.62, 
``Horsepower, Speed, and Voltage Ratings''; 12.30, ``Test Methods''; 
section 12.35, ``Locked-Rotor Current of 3-Phase 60-Hz Small and Medium 
Squirrel-Cage Induction Motors Rated at 230 Volts''; section 12.37, 
``Torque Characteristics of Polyphase Small Motors''; 12.38, ``Locked-
Rotor Torque of Single-Speed Polyphase Squirrel-Cage Medium Motors with 
Continuous Ratings''; section 12.39, ``Breakdown Torque of Single-speed 
Polyphase Squirrel-Cage Medium Motors with Continuous Ratings''; and

[[Page 64581]]

section 12.40, ``Pull-Up Torque of Single-Speed Polyphase Squirrel-Cage 
Medium Motors with Continuous Ratings.''
    Copies of NEMA MG-1-2014 can be obtained from: NEMA, 1300 North 
17th Street, Suite 900, Rosslyn, VA 22209, (703) 841-3200, or by 
visiting www.nema.org.
    (4) NSF International (NSF)/ANSI Standard 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.''
    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.
    Also, this material is available for inspection at U.S. Department 
of Energy, Office of Energy Efficiency and Renewable Energy, Building 
Technologies Office, Sixth Floor, 950 L'Enfant Plaza, SW., Washington, 
DC 20024, (202) 586-6636, or go to www1.eere.energy.gov/buildings/appliance_standards/.
    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 Notice of Proposed Rulemaking
III. Discussion
    A. Definitions
    1. Existing Pump Definitions
    2. Definition of Dedicated-Purpose Pool Pump
    3. Pool Filter Pumps
    a. Definition of a Basket Strainer and Filtration Accessories
    b. Self-Priming and Non-Self-Priming Pool Filter Pumps
    c. Integral Cartridge-Filter and Integral Sand-Filter Pool Pumps
    4. Other Varieties of Dedicated-Purpose Pool Pumps
    a. Waterfall Pumps
    b. Pressure Cleaner Booster 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
    B. Rating Metric
    1. Review of Current DPPP Regulatory and Voluntary Programs
    2. Proposed Metric: Weighted Energy Factor
    C. Test Methods for Different DPPP Categories and Configurations
    1. Self-Priming and Non-Self-Priming Pool Filter Pumps
    a. Single-speed Pool Filter Pumps
    b. Two-Speed Pool Filter Pumps
    c. Variable-Speed and Multi-Speed Pool Filter Pumps
    d. Weighting Factor for Various Load Points
    e. Applicability of Two-Speed, Multi-Speed, and Variable-Speed 
Pool Filter Pump Test Methods
    2. Waterfall Pumps
    3. Pressure Cleaner Booster Pumps
    4. Summary
    D. Determination of Pump Performance
    1. Incorporation by Reference of HI 40.6-2014
    2. Exceptions, Modifications and Additions to HI 40.6-2014
    a. Applicability and Clarification of Certain Sections of HI 
40.6-2014
    b. Calculation of Hydraulic Horsepower
    c. Data Collection and Determination of Stabilization
    d. Test Tolerances
    e. Power Supply Characteristics
    f. Measurement Equipment for Testing
    g. Calculation and Rounding Modifications and Additions
    E. Additional Test Methods
    1. Determination of DPPP Size
    2. Determination of Self-Priming Capability
    3. Determination of Maximum Head
    F. Representations of Energy Use and Energy Efficiency
    G. Labeling Requirements
    H. Replacement DPPP Motors
    I. 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. Burden of Conducting the Proposed DOE DPPP Test Procedure
    a. Estimated Equipment Costs for Testing Dedicated-Purpose Pool 
Pumps
    b. Labor Associated With Testing Dedicated-Purpose Pool Pumps
    c. Estimated Testing Cost per Manufacturer
    2. Review of DPPP Manufacturers
    3. Summary
    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. Materials Incorporated by Reference
V. Public Participation
    A. Attendance at Public Meeting
    B. Procedure for Submitting Prepared General Statements for 
Distribution
    C. Conduct of Public Meeting
    D. Submission of Comments
    E. Issues on Which DOE Seeks Comment
VI. 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 (DPPP), which are 
the subject of this rulemaking, are a subset of pumps and, thus, DOE is 
authorized to establish test procedures and energy conservation 
standards for them. Recently, DOE published in the Federal Register two 
final rules establishing new 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 because, 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, there currently are no Federal energy 
conservation standards or a test procedure for dedicated-purpose pool 
pumps. The following sections discuss DOE's authority to establish a 
test procedure for dedicated-purpose pool pumps and relevant background 
information regarding DOE's consideration of establishing Federal 
regulations for this equipment.

A. Authority

    The Energy Policy and Conservation Act of 1975 (EPCA), Public Law 
94-163, as amended by Public Law 95-619, Title IV, Sec. 441(a), 
established the Energy Conservation Program for Certain Industrial 
Equipment under Title III, Part C (42 U.S.C. 6311-6317, as 
codified).1 2 ``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)) To address this issue, DOE defined 
``pump'' in a test procedure final rule (January 2016 general pumps TP 
final rule) as equipment designed to move liquids (which may include 
entrained gases, free solids, and totally dissolved solids) by physical 
or mechanical action

[[Page 64582]]

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 notice of proposed rulemaking (NOPR), meet this definition of a 
pump and are covered under the pump equipment type. However, DOE has 
not yet established a test procedure or standards applicable to 
dedicated-purpose pool pumps (section I.B).
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    \1\ For editorial reasons, upon codification in the U.S. Code, 
Part C was re-designated Part A-1.
    \2\ 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 (April 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 equipment must use as the basis for (1) certifying to DOE that 
their equipment complies with the applicable energy conservation 
standards adopted under EPCA (42 U.S.C. 6295(s) and 6316(a)(1)), and 
(2) making representations about the energy consumption of that 
equipment. (42 U.S.C. 6314(d)) Similarly, DOE must use these test 
procedures to determine whether the equipment complies with any 
relevant standards promulgated under EPCA.
    EPCA sets forth the criteria and procedures DOE must follow when 
prescribing or amending test procedures for covered equipment. 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 equipment during a representative average use cycle 
or period of use, and shall not be unduly burdensome to conduct. (42 
U.S.C. 6314(a)(2))
    In addition, before prescribing any final test procedures, DOE must 
publish proposed test procedures and offer the public an opportunity to 
present oral and written comments on them. (42 U.S.C. 6314(b)(1)-(2))
    DOE is authorized to prescribe energy conservation standards and 
corresponding test procedures for covered equipment such as dedicated-
purpose pool pumps. Although DOE is currently evaluating whether to 
establish energy conservation standards for dedicated-purpose pool 
pumps (Docket No. EERE-2015-BT-STD-0008), DOE must first establish a 
test procedure that measures the energy use, energy efficiency, or 
estimated operating costs of a given type of covered equipment before 
establishing any new energy conservation standards for that equipment. 
See, generally, 42 U.S.C. 6295(o) and 6316(a).
    To fulfill these requirements, in this NOPR, DOE proposes to 
establish a test procedure for dedicated-purpose pool pumps in advance 
of the finalization of the ongoing ECS rulemaking for this equipment. 
(See Docket No. EERE-2015-BT-STD-0008.) The test procedure proposed in 
this NOPR includes the methods necessary to: (1) Measure the 
performance of the covered equipment, (2) use the measured results to 
calculate the weighted energy factor (WEF) to represent the energy 
consumption of the dedicated-purpose pool pump, inclusive of a motor 
and any controls, and (3) determine the minimum test sample (i.e., 
number of units) and permitted range of represented values. In this 
NOPR, DOE also proposes to set the scope of those dedicated-purpose 
pool pumps to which the proposed test methods would apply.
    If adopted, manufacturers would be required to use the DPPP test 
procedure and metric when making representations regarding the WEF 
(section III.B.2 for more information) of covered equipment beginning 
180 days after the publication date of any DPPP TP final rule 
establishing such procedures. All representations of energy factor 
(EF),\3\ overall (wire-to-water) efficiency, driver power input, 
nominal motor horsepower,\4\ total horsepower, service factor, pump 
power output (hydraulic horsepower), and true power factor (PF) must be 
based on testing in accordance with the new DPPP test procedure 
beginning 180 days after the publication date of a final rule in the 
Federal Register. See 42 U.S.C. 6314(d). However, DOE notes that 
certification of compliance with any energy conservation standards for 
dedicated-purpose pool pumps would not be required until the compliance 
date of any final rule establishing energy conservation standards 
applicable to this equipment. (See Docket No. EERE-2015-BT-STD-0008.)
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    \3\ Energy Factor (EF) is a metric that is common in the DPPP 
industry and which describes the quantity of water provided by a 
dedicated-purpose pool pump over the input power required to pump 
that amount of water in units of gallons per watt-hour (gal/Wh). EF 
is described in more detail in section III.B and the relevant test 
methods for determining EF are described in section III.C and III.F.
    \4\ In this NOPR, DOE proposes specific test methods and metrics 
applicable to nominal motor horsepower, total horsepower, service 
factor, and hydraulic horsepower of dedicated-purpose pool pumps. 
See section III.E.1 for a discussion of the different horsepower 
metrics applicable to dedicated-purpose pool pumps and the proposed 
testing and labeling requirements applicable to these metrics.
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B. Background

    Dedicated-purpose pool pumps are a style of pump for which DOE has 
not yet established a test procedure or energy conservation standards. 
Although DOE recently 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 TP 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). Specifically, in the January 2016 
general pumps TP and ECS final rules, DOE established relevant 
definitions, test procedures, and energy conservation standards for end 
suction close-coupled (ESCC); end suction frame mounted/own bearings 
(ESFM); in-line (IL); radially split, multi-stage, vertical, in-line 
diffuser casing (RSV); and submersible turbine (ST) pumps with the 
following characteristics:
     25 gallons per minute (gpm) and greater (at best 
efficiency point (BEP) at full impeller diameter);
     459 feet of head maximum (at BEP at full impeller diameter 
and the number of stages specified for testing);
     design temperature range from 14 to 248 [deg]F;
     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;
     6-inch or smaller bowl diameter for ST pumps (HI VS0);
     a clean water pump; \5\ and
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    \5\ In the January 2016 general pumps TP final rule, DOE defined 
``clean water pump'' as a pump that is designed for use in pumping 
water with a maximum non-absorbent free solid content of 0.016 
pounds per cubic foot, and with a maximum dissolved solid content of 
3.1 pounds per cubic foot, provided that the total gas content of 
the water does not exceed the saturation volume, and disregarding 
any additives necessary to prevent the water from freezing at a 
minimum of 14 [deg]F. 80 FR 4086, 4100 (Jan. 25, 2016).

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     not a fire pump,\6\ a self-priming pump,\7\ a prime-assist 
pump,\8\ a magnet driven pump,\9\ a pump designed to be used in a 
nuclear facility subject to 10 CFR part 50, ``Domestic Licensing of 
Production and Utilization Facilities''; or a pump meeting the design 
and construction requirements set forth in any relevant Military 
Specifications.\10\
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    \6\ In the January 2016 general pumps TP final rule, DOE defined 
``fire pump'' as a pump that is compliant with NFPA 20-2016, 
``Standard for the Installation of Stationary Pumps for Fire 
Protection,'' and is either: (1) UL listed under ANSI/UL 448-2013, 
``Standard for Safety Centrifugal Stationary Pumps for Fire-
Protection Service,'' or (2) FM Global (FM) approved under the 
January 2015 edition of FM Class Number 1319, ``Approval Standard 
for Centrifugal Fire Pumps (Horizontal, End Suction Type).'' 80 FR 
4086, 4101 (Jan. 25, 2016).
    \7\ In the January 2016 general pumps TP final rule, DOE defined 
``self-priming pump'' as a pump that is (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. 80 
FR 4086, 4147 (Jan. 25, 2016). This NOPR proposes to modify that 
definition. (See section III.A.3.b.)
    \8\ In the January 2016 general pumps TP final rule, DOE defined 
``prime-assist pump'' as a pump that (1) is designed to lift liquid 
that originates below the centerline of the pump inlet; (2) requires 
no manual intervention to prime or re-prime from a dry-start 
condition; and (3) includes a device, such as a vacuum pump or air 
compressor and venturi eductor, to remove air from the suction line 
in order to automatically perform the prime or re-prime function at 
any point during the pump's operating cycle. 80 FR 4086, 4147 (Jan. 
25, 2016).
    \9\ In the January 2016 general pumps TP final rule, DOE defined 
``magnet driven pump'' as a pump in which the bare pump is isolated 
from the motor via a containment shell and torque is transmitted 
from the motor to the bare pump via magnetic force. The motor shaft 
is not physically coupled to the impeller or impeller shaft. 80 FR 
4086, 4147 (Jan. 25, 2016).
    \10\ 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.
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    The pumps for which standards and a test procedure were established 
in the January 2016 general pumps TP and ECS final rules will be 
hereafter collectively referred to as ``general pumps'' in this DPPP TP 
NOPR.
    The January 2016 general pumps TP and ECS final rules were based on 
the recommendations of the Commercial and Industrial Pump (CIP) Working 
Group established through the Appliance Standards Rulemaking Federal 
Advisory Committee (ASRAC) to negotiate standards and a test procedure 
for general pumps. (Docket No. EERE-2013-BT-NOC-0039) \11\ The CIP 
Working Group concluded its negotiations on June 19, 2014, with a 
consensus vote to approve a term sheet containing recommendations to 
DOE on appropriate standard levels for general pumps, as well as 
recommendations addressing issues related to the metric and test 
procedure for general pumps (``CIP Working Group 
recommendations'').\12\
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    \11\ Information on the ASRAC, the CIP Working Group, and 
meeting dates is available at http://energy.gov/eere/buildings/appliance-standards-and-rulemaking-federal-advisory-committee.
    \12\ The term sheet containing the Working Group recommendations 
is available in the CIP Working Group's docket. (Docket No. EERE-
2013-BT-NOC-0039, No. 92)
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    In the CIP Working Group recommendations, the Working Group 
formally recommended DOE initiate a separate rulemaking for dedicated-
purpose pool pumps. (Docket No. EERE-2013-BT-NOC-0039, No. 92, 
Recommendation #5A at p. 2) Therefore, in the January 2016 general 
pumps TP final rule, DOE explicitly excluded dedicated-purpose pool 
pumps from the categories of pumps to which the test procedure and 
standards applied. 81 FR 4086, 4098-99 (Jan. 25, 2016). DOE also 
refrained from adopting a definition for dedicated-purpose pool pump 
and stated that DOE would define the term in the separate rule 
specifically addressing such equipment. Id.
    To begin the separate rulemaking for dedicated-purpose pool pumps 
referenced in the January 2016 general pumps TP final rule (81 FR 4086, 
4098-99 (Jan. 25, 2016)) and recommended by the CIP Working Group 
(Docket No. EERE-2013-BT-NOC-0039, No. 92, Recommendation #5A at p. 2), 
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. In 
response to the May 2015 DPPP RFI, DOE received six written comments. 
The commenters included the Association of Pool and Spa Professionals 
(APSP); Pacific Gas and Electric Company (PG&E), 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); the Hydraulic Institute 
(HI); Ms. Newman; the National Electrical Manufacturers Association 
(NEMA); and River City Pool and Spa (River City).
    In response to the May 2015 DPPP RFI, APSP, HI, and CA IOUs all 
encouraged DOE to pursue a negotiated rulemaking for dedicated-purpose 
pool pumps. (Docket. No. EERE-2015-BT-STD-0008, APSP, No. 10 at p. 2; 
HI, No. 8 at p. 2; CA IOUs, No. 11 at p. 2) Consistent with feedback 
from these interested parties, DOE began a process through the 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 initial ASRAC charter allowed for 3 
months of working group meetings to establish the scope, metric, 
definitions, and test procedure for dedicated-purpose pool pumps and 
reserved any discussion of standards to a later set of meetings once 
analysis had been conducted based on the framework established under 
the original charter. (Docket No. EERE-2013-BT-NOC-0005, No. 56 at p. 
27) On October 15, 2015, DOE published a notice of public open meetings 
of the DPPP Working Group. 80 FR 61996. The members of the Working 
Group were selected to ensure a broad and balanced array of interested 
parties and expertise, including representatives from efficiency 
advocacy organizations and manufacturers. Additionally, one member from 
ASRAC and one DOE representative were part of the Working Group. Table 
I.1 lists the 13 members of the DPPP Working Group and their 
affiliations.

[[Page 64584]]



      Table I.1--ASRAC DPPP Working Group Members and Affiliations
------------------------------------------------------------------------
           Member                  Affiliation          Abbreviation
------------------------------------------------------------------------
John Caskey.................  National Electrical   NEMA
                               Manufacturers
                               Association (and
                               ASRAC
                               representative).
John Cymbalsky..............  U.S. Department of    DOE
                               Energy.
Kristin Driskell............  California Energy     CEC
                               Commission.
Scott Durfee................  Nidec Motor           Nidec
                               Corporation.
Jeff Farlow.................  Pentair Aquatic       Pentair
                               Systems.
Gary Fernstrom..............  California Investor-  CA IOUs
                               Owned Utilities
                               (PG&E, SDG&E, SCG,
                               and SCE).
Patrizio Fumagalli..........  Bestway USA, Inc....  Bestway
Paul Lin....................  Regal Beloit          Regal
                               Corporation.
Joanna Mauer................  Appliance Standards   ASAP
                               Awareness Project.
Ray Mirza...................  Waterway............  Waterway
Doug Philhower..............  Hayward Industries,   Hayward
                               Inc.
Shajee Siddiqui.............  Zodiac Pool Systems,  Zodiac
                               Inc.
Meg Waltner.................  Natural Resources     NRDC
                               Defense Council.
------------------------------------------------------------------------

    The DPPP Working Group commenced negotiations at an open meeting on 
September 30 and October 1, 2015, and held three additional meetings to 
discuss scope, metrics, and the test procedure.\13\ The DPPP Working 
Group 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'').\14\ 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)
---------------------------------------------------------------------------

    \13\ Details of the negotiations sessions can be found in the 
public meeting transcripts that are posted to the docket for the 
Working Group (www.regulations.gov/#!docketDetail;D=EERE-2015-BT-
STD-0008).
    \14\ 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.
---------------------------------------------------------------------------

    The December 2015 DPPP Working Group recommendations pertinent to 
the test procedure and standard metric are reflected in this NOPR. In 
addition to referring to the December 2015 DPPP Working Group 
recommendations, DOE also refers to discussions from the DPPP Working 
Group meetings regarding potential actions that were not formally 
approved. All references herein to approved recommendations include a 
citation to the December 2015 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). References herein to 
discussions or suggestions of the DPPP Working Group not found in the 
December 2015 DPPP Working Group recommendations include 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).
    The DPPP Working Group also requested more time to discuss 
potential energy conservation standards for this equipment. On January 
20, 2016, ASRAC met and recommended that the DPPP Working Group 
continue its work to develop and recommend potential energy 
conservation standards for this equipment. (Docket No. EERE-2013-BT-
NOC-0005, No. 71 at pp. 20-52) Those meetings 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) containing 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 June 2016 DPPP 
Working Group recommendations also contained a non-binding 
recommendation regarding industry training for dedicated-purpose pool 
pump trades. (Docket No. EERE-2015-BT-STD-0008, No. 82, Non-Binding 
Recommendation #1 at p. 5) The proposed definitions, DPPP test 
procedure, sampling provisions, enforcement requirements, and labeling 
requirements contained in this NOPR reflect the suggestions of the DPPP 
Working Group made during these meetings, as well as the 
recommendations contained in the both the December 2015 and June 2016 
DPPP Working Group recommendations.
    DOE notes that many of those who submitted comments pertaining to 
the 2015 RFI later became members of the DPPP Working Group. As such, 
the concerns of these commenters were fully discussed as part of the 
meetings, and the positions of these commenters may have changed as a 
result of the compromises inherent in a negotiation. The proposals in 
this NOPR incorporate and respond to several issues and recommendations 
that were raised in response to the 2015 RFI. However, where an RFI 
commenter became a member of the DPPP Working Group, DOE does not 
separately address comments made by that interested party regarding 
issues that were later discussed or negotiated in the DPPP Working 
Group. As a result, no comments are addressed twice. Table I.2 lists 
the RFI commenters as well as whether they participated in the DPPP 
Working Group.

                    Table I.2--List of RFI Commenters
------------------------------------------------------------------------
                 Commenter                    DPPP working group member
------------------------------------------------------------------------
Association of Pool and Spa Professionals..  No.
California Investor-Owned Utilities........  Yes.
Hydraulics Institute.......................  No.
Ms. Newman.................................  No.
National Electrical Manufacturers            Yes.
 Association.
River City Pool and Spa....................  No.
------------------------------------------------------------------------

II. Synopsis of the Notice of Proposed Rulemaking

    In this TP NOPR, DOE proposes to amend subpart Y to 10 CFR part 431 
to include definitions and a test procedure applicable to dedicated-
purpose pool pumps. However, DOE proposes to establish a test procedure 
for only a specific subset of dedicated-purpose pool pumps. 
Specifically, this proposed test procedure would apply only to self-
priming and non-self-priming pool filter pumps, waterfall pumps, and 
pressure

[[Page 64585]]

cleaner booster pumps. The proposed test procedure would not apply to 
integral cartridge-filter pool pumps, integral sand-filter pool pumps, 
storable electric spa pumps, or rigid electric spa pumps. The proposed 
test procedure would be applicable to those varieties of pool pumps for 
which DOE is considering performance-based standards, as well as 
additional categories of dedicated-purpose pool pumps for which the 
DPPP Working Group did not propose standards (see section III.A.6 for 
more information on the applicability of the proposed test procedure to 
different DPPP varieties). However, DOE notes that the scope of any 
energy conservation standards would be established in a separate ECS 
rulemaking for dedicated-purpose pool pumps. (Docket No. EERE-2015-BT-
STD-0008) Manufacturers of dedicated-purpose pool pumps subject to this 
TP and the related ECS rulemaking would be required to use this DPPP 
test procedure when certifying compliance with any applicable standard 
and when making representations about the efficiency or energy use of 
their equipment. (42 U.S.C. 6314(d))
    In this NOPR, DOE proposes 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. WEF is determined as a 
weighted average of water flow rate over the input power to the 
dedicated-purpose pool pump at different load points, depending on the 
variety of dedicated-purpose pool pump and the number of operating 
speeds with which it is distributed in commerce. The proposed DPPP test 
procedure contains the methods for determining WEF for self-priming and 
non-self-priming pool filter pumps, waterfall pumps, and pressure 
cleaner booster pumps. In addition, the proposed DPPP test procedure 
contains 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 proposed DPPP test procedure 
contains optional methods for determining the WEF for replacement DPPP 
motors.
    DOE's proposed test method includes measurements of 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 proposes to incorporate 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 proposed in this test procedure, would 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 proposed test 
procedure, including HI 40.6-2014, and, based on the results of such 
analysis, found that the proposed test procedure would not be unduly 
burdensome to conduct. (42 U.S.C. 6314(a)(2)) DOE's analysis of the 
burdens associated with the proposed test procedure is presented in 
section IV.B.
    This NOPR also proposes requirements regarding the sampling plan, 
certification requirements, and representations for covered 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.I.1 for more detailed information). As DOE's 
proposed DPPP test procedure contains methods for calculating the EF, 
pump overall efficiency, PF, and other relevant quantities, DOE also 
proposes provisions regarding allowable representations of energy 
consumption, energy efficiency, and other relevant metrics 
manufacturers may make regarding DPPP performance (section III.E).
    Starting on the compliance date for any energy conservation 
standards that DOE may set for dedicated-purpose pool pumps, all 
dedicated-purpose pool pumps within the scope of those standards would 
be required certified in accordance with the amended subpart Y of part 
431 and the applicable sampling requirements. DOE is also proposing 
that, beginning on the compliance date of any energy conservation 
standards that DOE may set for dedicated-purposed pool pumps, certain 
information be reported to DOE on an annual basis as part of a 
certification of compliance with those standards (section III.I.2). 
Similarly, all representations regarding the energy efficiency or 
energy use of dedicated-purpose pool pumps for which this proposed DPPP 
test procedure should be made by testing in accordance with the adopted 
DPPP test procedure 180 days after the publication date of any TP final 
rule establishing such procedures. (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 DOE test procedure being 
proposed. As DOE understands that the proposed DPPP test procedure is 
based on the same testing methodology used to generate most existing 
pump performance information, DOE notes that it does not expect that 
manufacturers would 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 were substantially 
different from those proposed in this NOPR or the manufacturer has 
changed the design of the basic model, the representations resulting 
from the historical methods would no longer be valid.

III. Discussion

    In this NOPR, DOE proposes to amend subpart Y of part 431 to add a 
new DPPP test procedure and related definitions, amend 10 CFR 429.60 to 
add a new sampling plan for this equipment, and add new enforcement 
provisions for dedicated-purpose pool pumps in 10 CFR 429.110 and 
429.134. The proposed amendments are shown in Table III.1.

[[Page 64586]]



 Table III.1--Summary of Proposals in This NOPR, Their Location Within the Code of Federal Regulations, and the
                                         Applicable Preamble Discussion
----------------------------------------------------------------------------------------------------------------
                                                                                            Applicable preamble
              Location                      Proposal             Summary of additions           discussion
----------------------------------------------------------------------------------------------------------------
10 CFR 429.60......................  Test Procedure          Minimum number of dedicated- Section III.I.
                                      Sampling Plan and       purpose pool pumps to be
                                      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.I.
                                                              determination of
                                                              compliance of DPPP basic
                                                              models.
10 CFR 431.462.....................  Definitions...........  Definitions pertinent to     Section III.A.
                                                              categorizing and testing
                                                              of dedicated-purpose pool
                                                              pumps.
10 CFR 431.464 & Appendix B........  Test Procedure........  Instructions for             Sections III.B, III.C,
                                                              determining the WEF (and     III.D, III.E, III.F,
                                                              other applicable             and III.G.
                                                              performance
                                                              characteristics) for
                                                              applicable varieties of
                                                              dedicated-purpose pool
                                                              pumps and replacement DPPP
                                                              motors.
10 CFR 431.466.....................  Labeling..............  Requirements for labeling    III.G.
                                                              dedicated-purpose pool
                                                              pumps.
----------------------------------------------------------------------------------------------------------------

    The following sections discuss DOE's proposals regarding (A) 
definitions related to the categorizing and testing of dedicated-
purpose pool pumps; (B) the metric to describe the energy performance 
of dedicated-purpose pool pumps; (C) the test procedure for different 
varieties of dedicated-purpose pool pumps; (D) the specific test 
methods for determining pump performance that form the basis for the 
DOE test procedure; (E) additional test methods necessary to determine 
rated hydraulic horsepower,\15\ other DPPP horsepower metrics,\16\ and 
the self-priming capability of dedicated-purpose pool pumps; (F) 
selecting test samples and representations of energy use and energy 
efficiency; (G) labeling requirements for dedicated-purpose pool pumps; 
(H) an optional test method for replacement DPPP motors; and (I) 
certification and enforcement provisions for tested DPPP models.
---------------------------------------------------------------------------

    \15\ 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 proposes to 
use to describe the ``size'' of dedicated-purpose pool pumps. (See 
section III.E.1.)
    \16\ DOE proposes, 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 proposed test 
methods are discussed in section III.E and the labeling requirements 
are discussed in section III.G.
---------------------------------------------------------------------------

A. Definitions

    As discussed in section I.B, in the January 2016 general pumps TP 
final rule, DOE adopted a definition at 10 CFR 431.462 for ``pump'' 
along with other pump component- and configuration-related definitions. 
These definitions were necessary to establish the scope of the general 
pump test procedure and standards and to appropriately apply the test 
procedure. 81 FR 4086, 4090-4104 (Jan. 25, 2016).
    Although dedicated-purpose pool pumps are a style of pump, DOE 
declined to establish a test procedure or standards applicable to 
dedicated-purpose pool pumps in the January 2016 general pumps TP and 
ECS final rules because of their different equipment characteristics 
and applications. Id. at 4094 (Jan. 25, 2016) and 81 FR 4368 (Jan. 26, 
2016), respectively. Therefore, in this NOPR, DOE proposes a definition 
for dedicated-purpose pool pump, as well as related definitions for 
different varieties and operating speed configurations of dedicated-
purpose pool pumps. DOE also proposes definitions pertinent to 
categorizing and testing dedicated-purpose pool pumps in accordance 
with the DOE test procedure. DOE presents these definitions in the 
subsequent sections. In addition, DOE is proposing definitions and 
methods for determining for several terms related to describing ``DPPP 
size,'' 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.E.1.
1. Existing Pump Definitions
    As dedicated-purpose pool pumps fall into the larger pump equipment 
category, prior to proposing any definitions applicable to dedicated-
purpose pool pumps, it is necessary to review existing definitions 
related to pumps. In the January 2016 general pumps TP final rule, DOE 
defined a ``pump'' 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, 4090 (Jan. 25, 2016). In order to fully 
define the term ``pump,'' DOE also adopted the following definitions 
for the terms ``bare pump,'' ``mechanical equipment,'' ``driver,'' and 
``controls:''
     Bare pump means a pump excluding mechanical equipment, 
driver, and controls.
     Mechanical equipment means any component of a pump that 
transfers energy from a driver to the bare pump.
     Driver means the machine providing mechanical input to 
drive a bare pump directly or through the use of mechanical equipment. 
Examples include, but are not limited to, an electric motor, internal 
combustion engine, or gas/steam turbine.
     Control means any device that can be used to operate the 
driver. Examples include, but are not limited to, continuous or non-
continuous controls, schedule-based controls, on/off switches, and 
float switches.

Id. at 4090-91.

    DOE notes that because dedicated-purpose pool pumps are a style of 
pump, these terms also apply to the definition of dedicated-purpose 
pool pumps and certain DPPP components.
    In addition to defining the term ``pump,'' in the January 2016 
general pumps TP final rule, DOE also established and defined five 
varieties of pump to which the test procedure and standards established 
in the January 2016 general pumps TP and ECS final rules, respectively, 
apply. These pump varieties are (1) ESCC, (2) ESFM, (3) IL, (4) RSV, 
and (5) ST pumps.
    In order to specifically exclude dedicated-purpose pool pumps from 
the scope of the general pumps test

[[Page 64587]]

procedure and standards, DOE explicitly excluded dedicated-purpose pool 
pumps from the ESCC pump and ESFM pump definitions. 81 FR 4086, 4098-99 
(Jan. 25, 2016). Specifically, DOE defined ``end suction close-coupled 
(ESCC) pump'' as a close-coupled, dry rotor, end suction pump that has 
a shaft input power greater than or equal to 1-hp and less than or 
equal to 200-hp at BEP and full impeller diameter and that is not a 
dedicated-purpose pool pump. Examples include, but are not limited to, 
pumps within the specified horsepower range that comply with ANSI/HI 
nomenclature OH7, as described in ANSI/HI 1.1-1.2-2014. Id. at 4146. 
DOE also defined ``end suction frame mounted/own bearings (ESFM) pump'' 
as a mechanically-coupled, dry rotor, end suction pump that has a shaft 
input power greater than or equal to 1-hp and less than or equal to 
200-hp at BEP and full impeller diameter and that is not a dedicated-
purpose pool pump. Examples include, but are not limited to, pumps 
within the specified horsepower range that comply with ANSI/HI 
nomenclature OH0 and OH1, as described in ANSI/HI 1.1-1.2-2014.

Id. at 4146.

    The definitions presented in the previous paragraph ensure that 
dedicated-purpose pool pumps cannot be classified as ESCC or ESFM, and 
thus are excluded from the scope of applicability of the general pumps 
test procedure. DOE notes that dedicated-purpose pool pumps are only 
constructed as end suction pumps and, thus, exclusion from the IL, RSV, 
and ST equipment varieties is not necessary as they are not end suction 
pumps.
    As dedicated-purpose pool pumps are end suction pumps, DOE believes 
the definition for end suction pump established in the January 2016 
general pumps TP final rule also applies to dedicated-purpose pool 
pumps. In the January 2016 general pumps TP 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 \17\ established at 10 CFR 431.462 in the January 2016 general 
pumps TP final rule also applies to dedicated-purpose pool pumps.

Id. at 4147.

    \17\ In the January 2016 general pumps TP final rule, DOE 
defined rotodynamic pump as a pump in which energy is continuously 
imparted to the pumped fluid by means of a rotating impeller, 
propeller, or rotor. 81 FR 4086, 4147 (Jan. 25, 2016).
---------------------------------------------------------------------------

    In DOE's view, the term ``dry rotor pump'' applies to dedicated-
purpose pool pumps because, to DOE's knowledge, all dedicated-purpose 
pool pumps are dry rotor, as defined in the January 2016 general pumps 
final rule. DOE defines ``dry rotor pump'' as ``a pump in which the 
motor rotor is not immersed in the pumped fluid.'' 10 CFR 431.462. (Dry 
rotor pump is used herein in the definition of pressure cleaner booster 
pump (see section III.A.4.b)).
    DOE requests comment on whether all dedicated-purpose pool pumps 
are dry rotor.
    Other definitions established or incorporated by reference in the 
January 2016 general pumps TP final rule that apply to dedicated-
purpose pool pumps are the following: The definition of basic model 
(discussed further in section III.A.8), the definitions in HI 40.6-2014 
relevant to testing pumps (discussed further in section III.D.1), and 
the definition of self-priming pump (discussed further in section 
III.A.3.b). While other terms may be applicable to the description of 
dedicated-purpose pool pumps, they are not, at this time, proposed to 
be referenced in any of the DPPP definitions or specifications of the 
DPPP test procedure.
2. Definition of Dedicated-Purpose Pool Pump
    The DPPP Working Group recommended that ``dedicated-purpose pool 
pumps'' comprise the following pump varieties: 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. (Docket No. EERE-2015-BT-STD-0008, No. 51 
Recommendations #1 at p. 1) The DPPP Working Group defined the specific 
characteristics of each specific pump variety that it considers to be a 
dedicated-purpose pool pump. (Docket No. EERE-2015-BT-STD-0008, No. 51 
Recommendations #4 at pp. 2-4) These definitions are discussed in more 
detail in sections III.A.3, III.A.4, and III.A.5.
    Consistent with the recommendations of the DPPP Working Group, DOE 
proposes the following definition for dedicated-purpose pool pump:
    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.
    DOE believes that the proposed definition for dedicated-purpose 
pool pump captures all varieties of pump that are typically used in 
pools to circulate water or provide other auxiliary functions and 
clearly delineates that the term includes only the listed varieties. 
DOE notes that the proposed definition is also consistent with comments 
received in response to the May 2015 DPPP RFI.
    DOE requests comment on the proposed definition for ``dedicated-
purpose pool pump.''
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 (see section 
III.A.1) that circulates water through a pool and filtration system and 
removes large debris using a basket strainer or other device. The DPPP 
Working Group recommended 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) In this NOPR, DOE proposes adopting 
the Working Group's recommended definition for pool filter pump.
    DOE requests comment on the proposed definition of ``pool filter 
pump.''
a. Definition of a Basket Strainer and Filtration Accessories
    The proposed definition of pool filter pump includes the use of a 
basket strainer to differentiate pool filter pumps from other varieties 
of end suction pumps. The DPPP Working Group discussed the basket 
strainer feature and determined that all pool filter pumps will either 
include an integrated basket strainer or require one to be obtained 
separately and installed in order for the pump function correctly. 
(Docket No. EERE-2015-BT-STD-0008, CA IOUs and Pentair, No. 58

[[Page 64588]]

at pp. 50-53) 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)
    The DPPP Working Group also noted that some pool filter pumps may 
be distributed in commerce with additional pool filtration equipment, 
such as a sand filter or removable cartridge filter, but that are 
otherwise similar to pool filter pumps sold without such additional 
filtration accessories. The DPPP Working Group concluded that, if the 
additional pool filtration equipment is connected to the bare pump with 
consumer-removable connections that allow the pump to be plumbed to 
bypass the filtration accessory, then the package, as distributed in 
commerce, should be considered as a pool filter pump. (Docket No. EERE-
2015-BT-STD-0008, No. 58 at pp. 127-132) The DPPP Working Group also 
recommended that, if the removable cartridge filter or sand filter 
could not be plumbed out for testing, such a pump would be considered 
an integral cartridge-filter pool pump or an integral sand-filter pool 
pump, respectively, as described in section III.A.3.c. (Docket No. 
EERE-2015-BT-STD-0008, No. 51 Recommendation #4 at pp. 2-3)
    Therefore, to clearly establish what would be considered a 
``removable cartridge filter'' for the purposes of applying these 
regulations, and especially 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 discussed this issue and determined that a diameter of 1 
mm would effectively distinguish between removable cartridge filters 
and basket strainers. (Docket No. EERE-2015-BT-STD-0008, CA IOUs, DOE, 
Waterway, and Zodiac, No. 53 at pp. 13-19) Therefore, 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 the 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 proposed 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).
    DOE notes 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. In this NOPR, DOE proposes to 
adopt definitions for basket strainer, removable cartridge filter, and 
sand filter, as recommended by the DPPP Working Group.
    DOE requests comment on the proposed definitions of ``basket 
strainer,'' ``removable cartridge filter,'' and ``sand filter.''
    In addition, DOE also proposes a definition for ``integral,'' which 
is presented and discussed in more detail in section III.A.3.c.
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 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.'' \18\ 
This is because in aboveground pools, the pump is typically installed 
on the ground and below the water level in the pool, so the water will 
naturally flood the pump and self-priming capability is not necessary. 
Conversely, in inground pools, the pump is also located on the ground 
next to the pool, but the pump is above the water line and the pump 
must be self-priming for convenient and continuous operation of the 
pump.
---------------------------------------------------------------------------

    \18\ DOE notes that in the May 2015 DPPP RFI, DOE referred to 
self-priming and non-self-priming pool filter pumps as inground and 
aboveground pool pumps, respectively. 80 FR 26475, 26481 (May 8, 
2015)
---------------------------------------------------------------------------

    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) The DPPP 
Working Group also recommended definitions for ``self-priming pool 
filter pump'' and ``non-self-priming pool filter pump'' as follows:
     Self-priming pool filter pump means a pool filter pump 
that is a self-priming pump.
     Non-self-priming pool filter pump means a pool filter pump 
that is not a self-priming pump.

(Docket No. EERE-2015-BT-STD-0008, No. 51 Recommendation #4 at pp. 2-3)

    DOE notes that, in the January 2016 general pumps TP 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, this definition is not 
applicable to dedicated-purpose pool pumps because pool filter pumps

[[Page 64589]]

typically do not contain a recirculation passage to accomplish the 
self-priming function. Instead, self-priming dedicated-purpose pool 
pumps typically use a diffuser to maintain prime. Therefore, DOE must 
develop a new definition that differentiates self-priming versus non-
self-priming pool filter pumps.
    In considering a definition for self-priming pool filter pump, the 
DPPP Working Group subsequently discussed any unique characteristics 
that would effectively differentiate self-priming pool filter pumps 
from those that were not. Specifically, the DPPP Working Group members 
noted that NSF International \19\/ANSI 50-2015 (NSF/ANSI 50-2015), 
``Equipment for Swimming Pools, Spas, Hot Tubs, and Other Recreational 
Water Facilities,'' which contains testing methods and criteria for 
determining whether a dedicated-purpose pool pump is capable of self-
priming. (Docket No. EERE-2015-BT-STD-0008, No. XX at pp. 16-40; 109-
114; 122-129) Specifically, section 6.8 of NSF/ANSI 50-2015 states that 
``a pump designated as self-priming shall be capable of repriming 
itself when operated under a suction lift without the addition of more 
liquid. Self-priming capability shall be verified in accordance with 
Annex C, section C.3.'' Further, section C.3 of Annex C of NSF/ANSI 50-
2015 describes the self-priming capability test method. The criteria a 
pump must meet to satisfy the self-priming capability test are being 
able to prime under a vertical lift of 5 feet or the manufacturer's 
specified lift, whichever is greater, within 6 minutes or the 
manufacturer's recommended time, whichever is greater.
---------------------------------------------------------------------------

    \19\ NSF International was previously called the National 
Sanitation Foundation, but changed their name to NSF International 
in 1990.
---------------------------------------------------------------------------

    The NSF/ANSI 50-2015 method provides manufacturers with a 
considerable amount of discretion regarding the categorization of self-
priming pumps. However, DOE intends to establish clear and unambiguous 
criteria to determine self-priming capability to ensure consistent and 
equitable product ratings across pump models. The DPPP Working Group 
discussed the importance of aligning the proposed definition of self-
priming pool filter pump with that used in NSF/ANSI 50-2015. 
Specifically, Hayward and Zodiac noted that the vertical lift and true 
priming time referenced in any potential DOE definition should be 
equivalent to that specified in NSF/ANSI 50-2015. (Docket No. EERE-
2015-BT-STD-0008, Hayward, No. 79 at pp. 160; Zodiac, No. 79 at pp. 
161-162,)
    In order for DOE's definitions to be clear, consistent, and 
unambiguous, DOE must specify clear and unambiguous criteria that would 
be used to determine whether a pool filter pump is self-priming. To 
that end, the DPPP Working Group proposed definitions for self-priming 
and non-self-priming pool filter pumps that were consistent with the 
NSF/ANSI 50-2015 criteria, but also provided clear and unambiguous 
criteria to allow for consistent categorization of such pumps. 
Specifically, in the April 2016 meeting, the DPPP Working Group voted 
to approve the following definitions for self-priming and non-self-
priming pool filter pumps: \20\
---------------------------------------------------------------------------

    \20\ There was one vote against the approved definitions of 
self-priming and non-self-priming pool filter pump. Pentair 
disagreed with the proposed definitions because Pentair manufactures 
aboveground pool pumps that can prime themselves to some extent. 
Although Pentair does not claim these pumps as self-priming, they 
would meet the definition of self-priming proposed by the Working 
Group. As such, Pentair was concerned that a sizeable portion of 
their aboveground pumps would be classified as the self-priming 
variety. (Docket No. EERE-2015-BT-STD-0008, Pentair, No. 79 at p. 
191)
---------------------------------------------------------------------------

    Self-priming pool filter pump means a pool filter pump that is 
certified under NSF/ANSI 50-2015 to be self-priming or is capable of 
re-priming to a vertical lift of at least 5 feet with a true priming 
time less than or equal to 10 minutes, when tested in accordance with 
NSF/ANSI 50-2015.
    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 feet with a true 
priming time less than or equal to 10 minutes, when tested in 
accordance with NSF/ANSI 50-2015.
    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 feet, consistent with the 
NSF/ANSI 50-2015 requirement. This ensures that all pool filter pumps 
that can achieve a vertical lift of 5 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. 
However, DOE notes that, in order to specify the appropriate level of 
precision in the definitions, DOE proposes to specify the vertical lift 
value as 5.0 feet. DOE believes this level of precision is reasonable 
and achievable given the repeatability of the test and the level of 
accuracy required by the equipment for measuring distance specified in 
section III.D.2.f.
    The criterion for true priming time recommended by the DPPP Working 
Group is 10 minutes, as opposed to the 6 minutes specified in NSF/ANSI 
50-2015. 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 minutes was more appropriate and comprehensive. 
Similar to the specification on vertical lift, DOE proposes to more 
precisely specify the true priming time as 10.0 minutes, which DOE also 
believes is reasonable and consistent with the level of accuracy 
required by the time measurement equipment specified in section 
III.D.2.f.
    Therefore, DOE proposes to adopt new definitions for self-priming 
and non-self-priming pool filter pumps based on the NSF/ANSI 50-2015 
test and the criteria recommended by the DPPP Working Group, with minor 
modifications regarding the level of precision required by the 
criteria. DOE notes that these definitions rely on the NSF/ANSI 50-2015 
test method to determine self-priming capability. Accordingly, DOE 
proposes to incorporate by reference relevant sections of the NSF/ANSI 
50-2015 standard and also proposes several modifications and additions 
to improve repeatability and consistency of the test results. DOE's 
proposed 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.E.2.
    As noted previously, DOE established a definition for self-priming 
pump in the January 2016 general pumps TP final rule that is not 
applicable to dedicated-purpose pool pumps. 81 FR 4086, 4147 (Jan. 25, 
2016). However, self-priming pool filter pumps are a style of pump and 
are self-priming. Therefore, to ensure the definition of self-priming 
pump is comprehensive and consistent with the proposed new

[[Page 64590]]

definitions for self-priming and non-self-priming pool filter pump, DOE 
proposes to modify the definition of self-priming pump to also include 
self-priming pool filter pumps, in addition to the other referenced 
criteria. The proposed amended definition for self-priming pump would 
read as set out in the regulatory text at the end of this document.
    DOE requests comment on the proposed amendments to the definition 
of self-priming pump.
    Finally, as discussed further in section III.A.4.a, a waterfall 
pump is a specific style of pool filter pump that has flow and head 
characteristics designed specifically for waterfall and water feature 
applications. Section III.A.4.a also presents the specific definition 
for waterfall pump. As waterfall pumps are pool filter pumps and could 
be either self-priming or non-self-priming, unless explicitly excluded, 
they would meet the definitions of self-priming or non-self-priming 
pool filter pump proposed by the Working Group. However, DOE intends 
for such pumps to be treated specifically as waterfall pumps. 
Therefore, in order to exclude waterfall pumps from the self-priming 
and non-self-priming pool filter pump varieties, DOE proposes to 
clarify such in the definition of self-priming and non-self-priming 
pool filter pump. The proposed definitions for self-priming and non-
self-priming pool filter pump read as set out in the regulatory text at 
the end of this document.
    DOE requests comment on the proposed definitions for ``self-priming 
pool filter pump'' and ``non-self-priming pool filter pump.''
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. These pumps are integrally and permanently mounted to a 
filtration accessory such as an integral cartridge-filter or sand-
filter. These pumps can only be operated with the integral filtration 
accessory inline--the filtration accessory cannot be plumbed out for 
the purposes of testing. As a result, these pumps may require separate 
testing considerations than dedicated-purpose pool pumps for non-
temporary pools. However, as discussed further in section III.A.6, the 
DPPP Working Group recommended only prescriptive energy conservation 
standards for such equipment, not performance-based standards. (Docket 
No. EERE-2015-BT-STD-0008, No. 51 Recommendation #2B at p. 2) The 
recommended prescriptive standard requires that timers be distributed 
in commerce with the pumps. (Docket No. EERE-2015-BT-STD-0008, No. 82 
Recommendation #2 at p. 2) Therefore, the test procedure proposed in 
this document is not applicable to integral cartridge-filter and sand-
filter pool pumps.
    DOE needs to define integral cartridge-filter and integral sand-
filter pool pumps clearly to differentiate them from other DPPP 
varieties. The DPPP Working Group recommended 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 [in a housing] on the 
suction side of the pump, for operation; and the pump cannot be plumbed 
to bypass the cartridge filter for testing.
     integral sand-filter pool pump means a pump distributed in 
commerce with a sand filter that cannot be bypassed for testing.

(Docket No. EERE-2015-BT-STD-0008, No. 51 Recommendation #4 at pp. 2-3)

    DOE believes that the proposed definitions differentiate integral 
cartridge-filter and integral sand-filter pool pumps from other 
varieties of pool filter pumps based on their physical construction. 
DOE proposes to adopt the definitions for integral cartridge-filter 
pool pump and integral sand-filter pool pump recommended by the DPPP 
Working Group with a minor change to use consistent terminology in both 
definitions.
    DOE requests comment on the proposed definition of ``integral 
cartridge-filter pool pump'' and ``integral sand-filter pool pump.''
4. Other Varieties of Dedicated-Purpose Pool Pumps
    In addition to pool filter pumps, in the May 2015 DPPP RFI, DOE 
identified varieties of dedicated-purpose pool pumps that are used to 
drive auxiliary pool equipment such as pool cleaners and water 
features. 80 FR 26475, 26481 (May 8, 2015). These pumps, which include 
waterfall pumps and pressure cleaner booster pumps, are discussed in 
greater detail in the following sections.
a. Waterfall Pumps
    Certain styles of pumps are similar in design and construction to 
pool filter pumps but specifically intended to pump water for water 
features, such as waterfalls, and, therefore, 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.A.3.b, but are always equipped with a lower speed motor 
(approximately 1,800 rpm) in order to serve the specific high flow, low 
head applications of typical water features. Based on this unique 
construction and end user utility, the DPPP Working Group found it 
appropriate to differentiate waterfall pumps from self-priming and non-
self-priming pool filter pumps. In accordance with the intent \21\ of 
the December 2015 DPPP Working Group's recommendation (Docket No. EERE-
2015-BT-STD-0008, No. 51 Recommendation #4 at pp. 2-4), DOE proposes 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.''
---------------------------------------------------------------------------

    \21\ DOE notes that the verbatim text of the waterfall pump 
definition proposed by the DPPP Working Group in the December 2015 
DPPP Working Group recommendations is ``a maximum 1,800 rpm nominal 
speed, motor-driven pool filter pump with maximum head less than or 
equal to 30 feet.'' (Docket No. EERE-2015-BT-STD-0008, No. 51, 
Recommendation #4 at pp. 2-4) However, in this NOPR, DOE proposes to 
make a few modifications to the definition recommended by the 
Working Group to improve the clarity of the definition. 
Specifically, DOE proposes to rearrange the terms in the definition, 
and remove the reference to a waterfall pump as referencing a 
specific driver. DOE believes these changes are consistent with the 
intent of the DPPP Working Group and do not substantially change the 
meaning of the definition.
---------------------------------------------------------------------------

    The proposed definition uses maximum head and a specific maximum 
speed to distinguish waterfall pumps from other varieties of pool 
filter pumps. During negotiations, Hayward noted that waterfall pumps 
typically operate at half speed [of a typical dedicated-purpose pool 
pump], because the application of a waterfall feature does not require 
a significant amount of head. (Docket No. EERE-2015-BT-STD-0008, 
Hayward, No. 39 at pp. 62-63) In this context, half speed refers to 
1,800 rpm nominal speed or a 4-pole motor. (Docket No. EERE-2015-BT-
STD-0008, Hayward, No. 39 at p. 74) 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. Furthermore, the DPPP Working Group reviewed publically 
available

[[Page 64591]]

specification and performance literature for waterfall pumps offered by 
three major manufacturers. The DPPP Working Group found that these 
waterfall pumps are single speed and use 4-pole motors and, as shown in 
Figure III.1, have a maximum head less than or equal to 30 feet.
[GRAPHIC] [TIFF OMITTED] TP20SE16.000

    The DPPP Working Group compared the waterfall pump performance data 
with the performance data of those defined as self-priming and non-
self-priming pool filter pumps, and determined that those filter pumps 
all produce more than 30 feet of head. Therefore, the DPPP Working 
Group concluded that a maximum head of 30 feet, combined with a motor 
with a maximum rotating speed of 1,800, would clearly distinguish 
waterfall pumps from other varieties of pool filter pumps.

    DOE requests comment on the proposed definition of ``waterfall 
pump.''
b. Pressure Cleaner Booster Pumps
    Pressure cleaner booster pumps provide the water pressure that is 
used to both propel pressure-side pool cleaners along the bottom of the 
pool and to remove debris as the cleaner moves. To perform this task, a 
pressure cleaner booster pump must provide a high amount of head and 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.
    The DPPP Working Group discussed different design and performance 
aspects of pressure cleaner booster pumps, though none were determined 
to be sufficiently unique to pressure cleaner booster pumps to 
effectively differentiate them from other pump varieties. Specifically, 
the DPPP Working Group acknowledged that pressure cleaner booster pumps 
have essentially the same construction and similar performance 
characteristics (e.g., high head and low flow) as other general purpose 
end suction pumps. (Docket No. EERE-2015-BT-STD-0008, No. 53 at pp. 84-
85)
    After considering the design, construction, and performance 
information for pressure cleaner booster pumps and the discussions of 
the DPPP Working Group, 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 proposes 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

[[Page 64592]]

ANSI/UL 1081-2014, ``Standard for Swimming Pool Pumps, Filters, and 
Chlorinators.''
    The proposed definition for pressure cleaner booster pump does not 
contain any unique construction or operational features and instead 
utilizes intended application. To provide clarity and remove ambiguity 
when applying the proposed definition for pressure cleaner booster 
pump, DOE also proposes to adopt a definition for ``designed and 
marketed'' that DOE will use when determining the applicability of any 
DPPP test procedure or energy conservation standards to such pumps. 
Specifically, DOE proposes to define ``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).
    In the proposed pressure cleaner booster pump definition, DOE also 
references ANSI/UL 1081-2014, ``Standard for Swimming Pool Pumps, 
Filters, and Chlorinators,'' as an illustrative aide in identifying 
pressure cleaner booster pumps, as such pumps would be certified under 
the ANSI/UL 1081-2014 standard. However, DOE recognizes that other 
varieties of dedicated-purpose pool pumps may also be certified under 
ANSI/UL 1081-2014 and thus, the reference is not mandatory in 
determining whether a given pump would meet the definition of pressure 
cleaner booster pump.
    DOE requests comment on the proposed definition of ``pressure 
cleaner booster pump'' and whether DOE should consider making ANSI/UL 
1081-2014 a required label instead of illustrative in order to 
distinguish pressure cleaner booster pumps.
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.
    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.A.3.b) to operate the spa. In some 
applications, the same self-priming pool filter pump may serve both the 
pool and the spa. In other applications, the permanent, inground spa 
may have a dedicated self-priming pool filter pump that is identical in 
design and construction to the self-priming pool filter pump installed 
in permanent, inground pools.
    Conversely, for portable spas, a specific-purpose pump is typically 
distributed in commerce with the portable spa. Typically, the pumps 
used in portable electric spas are specifically designed and marketed 
for storable electric spa applications only. Such portable electric spa 
applications are aboveground and can be further differentiated into two 
general categories: Storable (or temporary) electric spas and rigid (or 
permanent) 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. Both of these spa varieties use a 
pump to circulate water and power the water features of the electric 
spa. However, the pumps that are typically installed in storable or 
rigid electric spas have different performance and design 
characteristics than other varieties of dedicated-purpose pool pumps 
installed in permanent pools and spas due to their different usage 
profiles.
    In the May 2015 DPPP RFI, DOE identified spa pumps as small ESCC 
pumps that do not have an integrated basket strainer. 80 FR 26475, 
26481 (May 8, 2015). In response to the May 2015 DPPP RFI, APSP 
commented that there is a difference between spa pumps and portable spa 
pumps. APSP commented that some spa pumps are similar to other pool 
pumps that are self-priming and have a strainer basket, while portable 
spas are not self-priming and do not have strainer baskets. (Docket No. 
EERE-2015-BT-STD-0008, APSP, No. 10 at pp. 8-9)
    In response, DOE notes that ENERGY STAR also specifically defines 
and differentiates ``residential portable spa pump'' as a pump intended 
for installation in a non-permanently installed residential spa as 
defined in ANSI/NSPI-6 (ANSI/NSPI-6-1999), ``Standard for Portable 
Spas.'' According to ENERGY STAR, such pumps are sometimes referred to 
as hot tub pumps, but do not include jetted bathtub pumps.\22\
---------------------------------------------------------------------------

    \22\ ENERGY STAR Pool Pumps--Program Requirements Version 1.1. 
Available at https://www.energystar.gov/products/spec/pool_pumps_specification_version_1_0_pd.
---------------------------------------------------------------------------

    The DPPP Working Group discussed potential spa pump definitions, 
necessary key characteristics that could differentiate the various 
styles of spa pumps, and the appropriateness of the proposed test 
procedure or any potential standards for these varieties of pumps. 
Ultimately, the DPPP Working Group recommended 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.'' The DPPP Working Group also recommended to define 
``rigid electric spa pumps'' 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. (Docket No. EERE-
2015-BT-STD-0008, No. 51, Recommendation #4 at p. 3) Research conducted 
for the DPPP Working Group indicates that all pumps currently marketed 
as rigid electric spa pumps exhibit all three of these features. 
(Docket No. EERE-2015-BT-STD-0008, No. 53 at pp. 23-24) Additionally, 
DOE's research did not identify any pumps with all three of these 
features that are not marketed for use with rigid spas.
    Based on the December 2015 DPPP Working Group recommendations, DOE 
proposes to adopt the definitions recommended by the DPPP Working 
Group.
    In addition, DOE notes that the proposed definition for storable 
electric spa pump differentiates the storable electric spa pump based 
on the unique characteristic that the pump is an integral part of an 
assembly that also contains an integral heater and/or an integral air 
pump. In support of the proposed definition for storable electric spa 
pump, the DPPP Working Group also recommended 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.'' (Docket No. EERE-2015-BT-STD-0008, No. 51, 
Recommendation #4 at p. 3) The DPPP Working Group

[[Page 64593]]

determined that the proposed approach effectively differentiated rigid 
electric spa pumps from other varieties of dedicated-purpose pool 
pumps. (Docket No. EERE-2015-BT-STD-0008, No. 53 at pp. 20-21) DOE 
believes that the definition of integral reflects the fact that a 
storable electric spa pump or rigid electric spa pumps is part of a 
single, inseparable unit that also contains a heater and/or an air 
pump, and which cannot be separated without compromising the physical 
integrity of the equipment. Therefore, DOE proposes to adopt the 
definition for integral as proposed by the Working Group. DOE notes 
that the term integral is also applicable to the definitions for 
integral cartridge-filter and integral sand-filter pool pumps (see 
section III.A.3.c).
    DOE requests comment on the proposed definitions for ``storable 
electric spa pump,'' ``rigid electric spa pump,'' and ``integral.''
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 ECS analysis and applicable 
test procedure be limited to specific varieties of dedicated-purpose 
pool pumps. (Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendations 
#1, #2A, and #2B at pp. 1-2; Recommendation #6 at p. 5) Specifically, 
the DPPP Working Group recommended that the scope of analysis for 
standards consider only the following DPPP varieties and only 
recommended test methods for these varieties:
     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, Recommendation #2 at p. 
2 and 6 at p. 5)
    Although the DPPP Working Group recommended defining integral 
cartridge-filter pool pumps, integral sand-filter pool pumps, storable 
electric spa pumps, and rigid electric spa pumps as dedicated-purpose 
pool pumps, it did not recommend that these DPPP varieties be 
considered in the ongoing ECS analysis or have test methods established 
in the DPPP test procedure. (Docket No. EERE-2015-BT-STD-0008, No. 51, 
Recommendations #1, #2A, and #2B at pp. 1-2; Recommendation #6 at p. 5) 
For integral cartridge-filter and sand-filter pumps, as discussed 
previously, the DPPP Working Group recommended to consider only a 
prescriptive standard, 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 are not 
applicable.
    Regarding storable electric spa pumps and rigid electric spa pumps, 
the DPPP Working Group did not recommend including these varieties of 
dedicated-purpose pool pumps in the scope of analysis for potential 
standards and did not recommend establishing a test procedure for them. 
(Docket No. EERE-2015-BT-STD-0008, No. 51 Recommendations #2A at pp. 1-
2 and #6 at p. 5) The DPPP Working Group excluded storable and rigid 
electric spa pumps from the recommended DPPP test procedure and 
standards analysis because the DPPP Working Group believed that it 
would be more appropriate to test and apply standards to storable and 
rigid electric spas (i.e., portable electric spas) as an entire 
appliance, as is currently done under California Title 20 (Cal. Code 
Regs., tit. 20 section 1604, subd. (g)(2) and section 1605.3, subd. 
(g)(6)) and the ANSI/APSP Standard 14-2014 (ANSI/APSP 14-2014), 
``Portable Electric Spa Energy Efficiency.'' Similarly, in response to 
the May 2015 DPPP RFI, APSP commented that portable spa pumps do not 
use a significant amount of energy in a portable electric spa and 
should not be separately regulated as they are components used in a 
regulated appliance. (Docket No. EERE-2015-BT-STD-0008, APSP, No. 10 at 
pp. 8-10)
    Although not included in the December 2015 DPPP Working Group 
recommendations, the DPPP Working Group discussed how the load points 
specified for self-priming and non-self-priming pool filter pumps were 
only applicable for pumps with a rated hydraulic horsepower less than 
2.5 hp, where rated hydraulic horsepower refers to the hydraulic 
horsepower measured at the maximum operating speed and full impeller 
diameter of the rated pump, as discussed in section III.E.1. (Docket 
No. EERE-2015-BT-STD-0008, No. 57 at pp. 280-291 and No. 50 at p. 56-
62) In a meeting following the December 2015 DPPP Working Group 
recommendations, on April 19, 2016, the DPPP Working Group discussed 
and ultimately recommended that DOE not develop a test procedure or 
standards for self-priming and non-self-priming pool filter pumps with 
a rated hydraulic horsepower greater than or equal to 2.5 hp. (Docket 
No. EERE-2015-BT-STD-0008, No. 79 at pp. 33-54) The DPPP Working Group 
discussed how the typical applications and field use of very large pool 
filter pumps differed significantly from pool filter pumps with 
hydraulic horsepower less than 2.5 hp. (Docket No. EERE-2015-BT-STD-
0008, CA IOUs, No. 53 at pp. 169-171; CA IOUs, No. 54 at pp. 18-19; 
Waterway, No. 54 at pp. 21-22; Zodiac, No. 54 at p. 23) Specifically, 
unlike pool filter pumps with hydraulic horsepower less than 2.5 hp, 
which are typically installed in residential applications (section 
III.C.1), very large pool filter pumps are more commonly installed in 
commercial applications. In commercial pools, the head and flow 
characteristics of pool systems are significantly different from 
residential applications. (Docket No. EERE-2015-BT-STD-0008, CA IOUs 
No. 53 at pp. 197-198) Therefore, the DPPP Working Group determined 
that any test procedure for very large pool filter pumps would require 
unique load points.
    In addition, the DPPP Working Group noted the lack of performance 
data for self-priming and non-self-priming pool filter pumps with a 
rated hydraulic horsepower greater than or equal to 2.5 hp, which 
precluded the DPPP Working Group from establishing baseline and maximum 
technologically feasible (``max-tech'') efficiency levels. Without 
baseline and max-tech, the DPPP Working Group was unable to establish 
intermediary levels, and ultimately, was not able to effectively 
characterize the cost-versus-efficiency relationship for very large 
pool filter pumps. As a result, the DPPP Working Group recommended that 
DOE not develop standards for very large pool filter pumps as part of 
the current negotiated rulemaking and did not to recommend a test 
procedure for these pumps. (Docket No. EERE-2015-BT-STD-0008, No. 79 at 
pp. 33-54;) Therefore, consistent with the December 2015 DPPP Working 
Group recommendations, DOE proposes to not specify a test procedure for 
very large pool filter pumps with a rated hydraulic horsepower greater 
than or equal to 2.5 hp as part of this rulemaking. If DOE decides to 
pursue a test procedure and standards for very large pool filter pumps, 
DOE could do so as part of a future rulemaking. Accordingly, all future 
references to pool filter pumps, self-priming pool filter pumps, and 
non-self-priming pool filter pumps refer to pumps with a rated 
hydraulic horsepower less than 2.5 hp.
    In accordance with the December 2015 DPPP Working Group 
recommendations, DOE proposes that the test procedure would only be 
applicable to those DPPP varieties for

[[Page 64594]]

which DOE is considering establishing performance-based energy 
conservation standards: Self-priming pool filter pumps, non-self-
priming pool filter pumps, waterfall pumps, and pressure cleaner 
booster pumps. However, DOE notes that applicability of the DPPP test 
procedure and standards may differ slightly with respect to dedicated-
purpose pool pumps that are supplied by single-phase versus three-phase 
power. Specifically, 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. The DPPP Working Group 
also clarified that, regardless of whether the pump is supplied by 
single- or three-phase power, the recommended rated hydraulic 
horsepower limitation of 2.5 hp would still apply to both single- and 
three-phase self-priming pool filter pumps. (Docket No. EERE-2015-BT-
STD-0008, No. 82 Recommendations #3 at p. 2) Therefore, consistent with 
the June 2016 DPPP Working Group recommendations, DOE proposes that the 
proposals contained in this NOPR regarding 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. DOE accordingly will limit the scope of any potential energy 
conservation standards for such equipment in a related energy 
conservation standard rulemaking.
    Further, consistent with the December 2015 DPPP Working Group 
recommendations, DOE proposes definitions for rigid-electric and 
storable-electric spa pumps as a variety of dedicated-purpose pool pump 
in this test procedure NOPR, but is not prescribing test procedures or 
reporting requirements for them. In response to HI's comment regarding 
the applicability of the ESCC definition to spa pumps, DOE notes that 
any pumps meeting the definition of dedicated-purpose pool pumps are 
excluded from the ESCC definition (see section III.A.1), including 
rigid-electric or storable-electric spa pumps, as well as self-priming 
and non-self-priming pool filter pumps that may be installed in spas. 
However, DOE notes that self-priming and non-self-priming pool filter 
pumps that may be installed in spas, but are not storable or rigid 
electric spa pumps, would still be subject to the test procedure as 
self-priming or non-self-priming pool filter pumps, respectively, 
regardless of the application.
    In addition, upon further review of the DPPP market and any 
potentially similar pumps, DOE determined that some end suction, 
submersible pond pumps may meet the definition of self-priming or non-
self-priming pool filter pump, but were not reviewed by the DPPP 
Working Group and were not intended by the DPPP Working Group to be in 
the scope of this rulemaking. In order to exclude these pumps from this 
regulation, DOE proposes to exclude submersible pumps from the scope of 
the DPPP test procedure. To accomplish this, DOE proposes to define a 
``submersible pump'' as ``a pump that is designed to be operated with 
the motor and bare pump fully submerged in the pumped liquid.''
    The specific test methods proposed for each of the applicable DPPP 
varieties is discussed in more detail in section III.C.
    DOE requests comment on the proposed scope of applicability of the 
DPPP test procedure.
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 proposes 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. The following 
subsections discuss definitions for the various DPPP speed 
configurations and the applicability of control definitions to 
dedicated-purpose pool pumps.
    Currently, dedicated-purpose pool pumps are distributed in commerce 
with a variety of motor speed configurations (e.g., single-speed, two-
speed, multi-speed, or variable-speed). The DPPP Working Group 
recommended that DOE establish different test points for each speed 
configuration in the DPPP test procedure, in order to best represent 
the different energy use patterns exhibited by each configuration (see 
section III.C). (Docket No. EERE-2015-BT-STD-0008, No. 51 
Recommendations #6, 7 at p. 5) Therefore, DOE proposes specific 
definitions to establish the appropriate test method and load points 
for applicable dedicated-purpose pool pumps.
    In the second round of DPPP Working Group meetings, the DPPP 
Working Group discussed and ultimately recommended definitions for the 
following speed configurations for dedicated-purpose pool pumps: 
Single-speed, two-speed, multi-speed, and variable-speed. (Docket No. 
EERE-2015-BT-STD-0008, No. 82, Recommendation #5A at p. 3) These 
definitions would enable each speed configuration to be identified and 
tested using the most appropriate test method based on (1) the number 
of operating speeds available on the pump; (2) the minimum operating 
speed, or turn-down ratio,\23\ on 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 DPPP Working Group recommended the following 
definitions:
---------------------------------------------------------------------------

    \23\ 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.
---------------------------------------------------------------------------

     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 
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.
     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.

[[Page 64595]]

     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 (i.e., equipment capable of varying the speed of 
the motor) 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 is unable 
to operate without the presence of a user interface.

(Docket No. EERE-2015-BT-STD-0008, No. 82, Recommendation #5A at p. 3)

    In addition to the number of speeds available on any given pump, 
the DPPP Working Group's recommended definitions contain minimum 
operating speeds for two-speed, multi-speed, and variable-speed 
dedicated-purpose pool pumps. Specifically, the DPPP Working Group 
recommended a minimum speed less than or equal to half of the maximum 
operating speed for two-speed and multi-speed dedicated-purpose pool 
pumps and a minimum operating speed less than or equal to one-third of 
the maximum operating speed for variable-speed dedicated-purpose pool 
pumps.\24\ This is generally consistent with ANSI/APSP/ICC-15a-
2013,\25\ CA Tile 20,\26\ and ENERGY STAR,\27\ which require that, in 
order to be considered two-speed, multi-speed, or variable-speed 
equipment, dedicated-purpose pool pumps must have the capability of 
operating at two or more speeds with the low speed having a rotation 
rate that is no more than one-half of the motor's maximum rotation 
rate.
---------------------------------------------------------------------------

    \24\ DOE notes that the requirement for variable-speed 
dedicated-purpose pool pumps would be applicable to the dedicated-
purpose pool pump, when equipped with an applicable pool pump 
control, as the minimum operating speed will typically be dictated 
by the control. That is, the pump must inherently be capable of 
being turned down to such a speed, provided a control that is also 
capable of being turned down to a speed of less than or equal to 
one-third of the maximum speed.
    \25\ Section 4.1.1.2.
    \26\ Cal. Code Regs., tit. 20 section 1605.3, subd. (g)(5).
    \27\ ENERGY STAR Pool Pumps--Program Requirements Version 1.1. 
Available at https://www.energystar.gov/products/spec/pool_pumps_specification_version_1_0_pd.
---------------------------------------------------------------------------

    Further, the DPPP Working Group also recommends that in order to be 
considered a variable-speed dedicated-purpose pool pump, such a pump 
must be capable of operating in speed increments of at most 100 rpm, 
when installed with an applicable pool pump control. (Docket No. EERE-
2015-BT-STD-0008, No. 82, Recommendation #5A at p. 3) Conversely, if 
such a pump is only able to operate with speed increments greater than 
100 rpm, then that pump would be considered a multi-speed pump 
(assuming it meets all other previously discussed requirements). The 
minimum operating speed and spacing requirements in two-speed, multi-
speed, and variable-speed dedicated-purpose pool pumps ensure that the 
test procedure for these speed configurations results in representative 
energy performance. That is, unless the low operating speed is 
consistent with or below the specified minimum operating speed, and the 
speed increment requirements are met, the DPPP Working Group did not 
believe that the load points and weights specified for variable-speed 
dedicated-purpose pool pumps (presented in section III.C.1) would be 
representative. (Docket No. EERE-2015-BT-STD-0008, No. 95 at pp. 129-
146)
    Finally, the definitions recommended by the DPPP Working Group 
contain requirements regarding the presence and operating 
characteristics of a pool pump control. In the field, two-speed, multi-
speed, and variable-speed dedicated-purpose pool pumps require controls 
to enable operation at all available speeds. In their discussions, the 
DPPP Working Group acknowledged that most two-speed dedicated-purpose 
pool pumps are currently distributed in commerce without controls, as 
such pumps are typically intended to be paired with new or existing 
two-speed controls. Similarly, the DPPP Working Group acknowledged that 
variable-speed and some multi-speed dedicated-purpose pool pumps are 
currently distributed in commerce without a user interface (a type of 
control), as such pumps are typically intended to be paired with new or 
existing pool automation systems in the field. (Docket No. EERE-2015-
BT-STD-0008, No. 95 at pp. 40-62, 76-79, 82-111; 129-147).
    Certain members of the DPPP Working Group voiced concern that if 
two-speed, multi-speed, and variable-speed dedicated-purpose pool pumps 
were distributed in commerce without any form of control or user 
interface, 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) Therefore, to have reasonable assurance that the test points and 
resultant WEF metric for the various DPPP speed configurations would be 
representative of actual performance of the equipment in the field, the 
DPPP Working Group developed the recommended definitions to ensure that 
only those dedicated-purpose pool pumps that either: (1) Are 
distributed in commerce with a pool pump control or user interface (as 
applicable) or, (2) for two-speed and variable-speed dedicated-purpose 
pool pumps, requires the installation of such controls or user 
interface (as applicable) in order to operate would be able to be 
treated as two-speed, multi-speed, and variable-speed dedicated purpose 
pool pumps.
    The DPPP Working Group developed the later requirement (that two-
speed and variable-speed dedicated purpose pool pumps cannot operate 
without being installed with a pool pump control or user interface, as 
applicable) to accommodate those cases where a dedicated-purpose pool 
pump was intended to be installed into a residence with an existing 
pool pump control or user interface (as applicable) that met the stated 
requirements or may be paired with an applicable pool pump control or 
user interface in the field. In such cases, the dedicated-purpose pool 
pump would be allowed to be sold without the presence of a pool pump 
control or user interface (as applicable) so as not to burden the end-
consumer with a duplicative pool pump control or user interface. 
However, to ensure that two-speed and variable-speed dedicated-purpose 
pool pumps would in all cases be installed and operated with an 
applicable pool pump control or user interface that enables the 
expected energy performance, the definitions require that these pumps 
be unable to operate without being connected to an applicable pool pump 
control or user interface in the field. Specifically, the Working Group 
recommended that the two-speed DPPP definition require such a pump to 
be distributed in commerce either: (1) With a pool pump control that 
has certain capabilities or (2) without a pool pump control that has 
those capabilities but is unable to operate without the presence of 
such a pool pump control. Similarly, the Working Group recommended that 
the variable-speed DPPP definition require such a pump to include a 
variable speed drive and be distributed in commerce either: (1) With a 
pool pump user interface with certain capabilities or (2) without a 
user interface but is unable to operate without the presence of a user

[[Page 64596]]

interface. Conversely, the DPPP Working Group did not believe that this 
accommodation was necessary for multi-speed dedicated-purpose pool 
pumps and, as a result, multi-speed dedicated-purpose pool pumps are 
required to be distributed in commerce with an on-board control. DOE 
notes that, based on the proposed definition, multi-speed dedicated-
purpose pool pumps would be required to have an on-board control when 
distributed in commerce, which includes when the pump is imported into 
the United States.
    While the DPPP Working Group's recommended definitions for two-
speed, multi-speed, and variable-speed dedicated-purpose pool pumps all 
reference the presence and operating characteristics of pool pump 
controls, the applicable types of controls vary among the definitions. 
In the definition of variable-speed dedicated-purpose pool pump, the 
definition refers to the terms ``variable speed drive'' and ``user 
interface,'' where the terms ``variable speed drive'' and ``user 
interface'' refer to a specific variety of pool pump control. 
Conversely, in the case of two-speed and multi-speed dedicated-purpose 
pool pumps, the recommended definitions allow for an additional variety 
of pool pump controls, namely switches, which are applicable to such 
equipment.
    In addition, the definitions of multi-speed and variable-speed 
dedicated-purpose pool pump require the applicable pool pump control to 
be programmable such that users may select the duration of each speed 
and/or the on/off times and the pump will automatically operate 
according to that schedule without manual intervention. Both of these 
definitions are meant to capture pool pump controls and user interfaces 
that allow the user to schedule the periods of time the pool pump is 
operating at any given speed, as well as when the pump turns on and 
turns off. Pool pump controls and user interfaces that, for example, 
merely enable the user to set a duration of operation at high speed and 
then default to low speed operation, but do not allow the user to pre-
determine when the pump would turn on and off would not meet the 
definition of multi-speed or variable-speed dedicated-purpose pool 
pump. (Docket No. EERE-2015-BT-STD-0008, No. 92 at pp. 222-231)
    Conversely, for two-speed dedicated-purpose pool pumps, the DPPP 
Working Group recommended that the definition include the requirement 
that the pool pump control be capable of changing the speed in response 
to user preferences, but did not recommend that such controls must 
operate on a pre-programmed schedule. As such, the functionality 
required for two-speed pool pump controls may be accomplished by an 
automated, pre-programmed, timer-based control and user interface or a 
simple manual switch that would require the user to physically switch 
between the low and high operating speeds. The DPPP Working Group 
accommodated more simplistic controls for two-speed dedicated-purpose 
pool pumps based on the fact that most two-speed dedicated-purpose pool 
pumps available in the market today are not currently sold with any 
integrated control. (Docket No. EERE-2015-BT-STD-0008, No. 92 at pp. 
215-222)
    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 are summarized in 
Table III.2.

   Table III.2--Summary of Applicable Pool Pump Control Varieties and Related 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 or DPPP model
                                        drive and user                                    cannot operate without
                                        interface or                                      being installed with
                                        Switch........                            such controls.
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.
----------------------------------------------------------------------------------------------------------------

    However, to ensure that the more accommodating requirements for 
pool pump controls in the two-speed DPPP definition would not result in 
an inadvertent loophole and/or bias in the market for DPPP varieties 
where two-speed dedicated-purpose pool pumps may be the least efficient 
option, the DPPP Working Group recommended additional provisions for 
larger two-speed self-priming pool filter pumps. Specifically, in order 
to use the two-speed DPPP test procedure (described in section 
III.C.1.b), the DPPP Working Group recommended that 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 that are 
two-speed 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. 
(Docket No. EERE-2015-BT-STD-0008, No. 82, Recommendation #5B at p. 3). 
This is discussed in more detail in section III.C.1.e.
    In this NOPR, DOE proposes to adopt the definitions for single-
speed, two-speed, multi-speed, and variable-speed dedicated-purpose 
pool pump as proposed by the DPPP Working Group, with a few minor 
modifications. DOE notes that the definition of variable-speed 
dedicated-purpose pool pump recommended by the DPPP Working Group 
clarifies the meaning of the term variable speed drive as describing 
``equipment capable of varying the speed of the motor,'' while the 
definitions of two-speed and multi-speed dedicated-purpose pool pump 
also reference this term but do not contain such a clarification. 
Therefore, to clarify the meaning of variable speed drive and ensure 
that such clarification is applicable to all DPPP speed configurations, 
DOE proposes to establish a definition for variable speed drive, for 
the purposes of applying the DPPP test procedure, as equipment capable 
of varying the speed of the motor that removes the clarifying

[[Page 64597]]

parenthetical (``equipment capable of varying the speed of the 
motor''). DOE believes the terms ``user interface'' and ``switch'' are 
unambiguous and well-understood in the industry and, therefore, do not 
require explicit definitions.
    DOE requests comments on these proposed definitions for single-
speed, two-speed, multi-speed, and variable-speed dedicated-purpose 
pool pump.
    DOE also requests comment on any additional criteria or specificity 
that might be required in the definitions to effectively differentiate 
the various speed configurations for different DPPP varieties.
    For dedicated-purpose pool pumps distributed in commerce with 
applicable pool pump controls, the DPPP Working Group considered 
additional requirements if the controls also include ``freeze 
protection controls.'' 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. As the control schemes for freeze protection 
vary widely between manufacturers, the resultant energy consumption 
associated with such control can also vary depending on control 
settings and climate. To ensure freeze protection controls on 
dedicated-purpose pool pumps only operated when necessary and did not 
result in unnecessary, wasted energy use, the DPPP Working Group 
discussed and ultimately recommended establishing prescriptive 
requirements for dedicated-purpose pool pumps that are distributed in 
commerce with freeze protection controls. 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).

    In order to identify dedicated-purpose pool pumps with freeze 
protection controls for which the recommended prescriptive requirements 
would be applicable, DOE proposes 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.''
    DOE requests comment on the proposed definition for freeze 
protection controls.
8. Basic Model
    In the course of regulating consumer products and commercial and 
industrial equipment, DOE has developed the concept of a ``basic 
model'' to determine the specific product or equipment configuration(s) 
to which the regulations would apply. For the purposes of applying the 
proposed DPPP regulations, DOE also proposes to define what constitutes 
a ``basic model'' of a dedicated-purpose pool pump. Applying this basic 
model concept would allow 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 other words, manufacturers 
would need to test only a representative number of units of a basic 
model in lieu of testing every model they manufacture. However, 
manufacturers may only group individual models of dedicated-purpose 
pool pumps that are reasonably similar; that is, only dedicated-purpose 
pool pumps from the same equipment class may be grouped together. In 
addition, the represented performance for all models within a basic 
model must be based on the tested performance of the least efficient 
model.
    In the January 2015 general pumps TP final rule, DOE adopted a 
definition for a ``basic model'' of pump that provided additional 
specifications regarding the characteristics that differentiate basic 
models, including variation in number of stages for multistage pumps, 
variation in impeller trim, and variation in motor horsepower resulting 
from differences in number of stages or impeller trim. 81 FR 4086, 
4092-94 (Jan. 25, 2016).
    DOE proposes to amend the definition of ``basic model'' for pumps 
established in the January 2016 general pumps TP final rule to also 
accommodate dedicated-purpose pool pumps. DOE notes that many of the 
specific accommodations in the basic model definition regarding number 
of stages for multistage pumps and trimmed impellers are applicable 
only to those general pumps that were the subject of the January 2016 
general pumps TP final rule. 81 FR 4086 (Jan. 25, 2016). DOE 
understands that dedicated-purpose pool pumps are exclusively single-
stage pumps and, therefore, the provision regarding variation in number 
of stages is not applicable. Furthermore, DOE understands that each 
DPPP model is offered with only one impeller diameter, unlike general 
pumps for which a given pump model may be sold with many different 
impeller diameters that are customized for each application. Therefore, 
DOE believes that the provision for grouping individual pumps that vary 
only in impeller diameter, or impeller trim, is also not applicable to 
dedicated-purpose pool pumps; any variation in impeller trim would 
constitute a separate basic model for dedicated-purpose pool pumps. 
Finally, as neither the multistage nor impeller trim specifications for 
basic model designation apply to dedicated-purpose pool pumps, the 
provision regarding variation in motor horsepower resulting from 
variation in either of those characteristics also does not apply to 
dedicated-purpose pool pumps.
    Therefore, DOE proposes to adopt only the general 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. In addition, DOE proposes to clarify that the 
specific provisions regarding number of stages, impeller trim, and 
variation in motor horsepower as a result of those characteristics 
adopted in the pumps basic model definition are only applicable to the 
general pumps addressed by the January 2015 general pumps TP and ECS 
final rule, for which standards are specified in 10 CFR 431.465(b). 81 
FR 4086 (Jan. 25, 2016) and 81 FR 4368 (Jan. 26, 2016).
    DOE requests comment on the proposed definition of ``basic model.''
    In addition, DOE requests comment on any characteristics unique to 
dedicated-purpose pool pumps that may necessitate modifications to the 
proposed definition of ``basic model.''
B. Rating Metric
    One of the first and most important issues DOE must consider in 
designing a test procedure is the selection of the regulatory metric. 
In selecting an appropriate metric for dedicated-purpose pool pumps, 
the DPPP Working Group reviewed applicable metrics

[[Page 64598]]

currently employed by existing regulatory and voluntary programs for 
dedicated-purpose pool pumps in the United States and internationally. 
Ultimately, the DPPP Working Group recommended using a new metric, the 
WEF, as the regulatory metric for dedicated-purpose pool pumps. (Docket 
No. EERE-2015-BT-STD-0008, No. 51, Recommendation #5 at p. 4) A review 
of the existing regulatory programs are discussed in more detail in 
section III.B.1 and the proposed WEF metric is presented in section 
III.B.2.
1. Review of Current DPPP Regulatory and Voluntary Programs
    In considering a metric for dedicated-purpose pool pumps, the DPPP 
Working Group conducted research to identify what, if any, DPPP-related 
regulatory and voluntary programs currently exist. DOE identified one 
regulatory program, first adopted by the California Energy Commission 
(CEC) and subsequently implemented in a number of other States,\28\ and 
three domestic voluntary pool pump programs by APSP, the Consortium for 
Energy Efficiency (CEE), and ENERGY STAR that are relevant to 
dedicated-purpose pool pumps. DOE also identified international pool 
pump programs established in Australia and New Zealand, as well as 
DOE's own January 2016 general pumps TP final rule. 81 FR 4086 (Jan. 
25, 2016).
---------------------------------------------------------------------------

    \28\ See, e.g. Ariz. Rev. Stat. section 44-1375 (2015); Conn. 
Agencies Regs. section 16a-48.4 (2015); Fla. Stat. Ann. section 
533.909 (2015); and Wash. Rev. Code Ann. section 19.260.040 (2015).
---------------------------------------------------------------------------

    The majority of existing regulatory and voluntary programs in the 
United States for dedicated-purpose pool pumps focus on energy factor 
(EF) as the key metric for describing performance. Some programs also 
establish prescriptive requirements related to the construction of DPPP 
motors. Specifically, Article 4 of Chapter 4 of Title 20 of the 
California Code of Regulations, ``Appliance Efficiency Regulations,'' 
(CA Title 20); \29\ ANSI/APSP/ICC-15a-2013; \30\ the CEE Residential 
Swimming Pool Initiative; \31\ and ENERGY STAR \32\ all require testing 
and reporting of EF and other pump performance parameters at a variety 
of load points, specified in terms of up to three systems curves 
(curves A, B, and C) and up to four speeds (minimum, maximum, half, and 
most efficient speed). In addition to EF, three of these programs 
(i.e., CA Title 20, ANSI/APSP/ICC-15a-2013, and ENERGY STAR) require 
reporting of nominal motor speed, flow, and input power at the 
specified load points based on testing in accordance with ANSI/HI 1.6-
2000.\33\ The three unique system curves (curve A, curve B, and curve 
C) are described by equations in terms of head and flow, as shown in 
Table III.3, and were developed to be representative of 2.0-inch, 1.5-
inch, and 2.5-inch diameter plumbing, respectively.\34\
---------------------------------------------------------------------------

    \29\ California Energy Commission (CEC). Chapter 4: Energy 
Conservation, Article 4: Appliance Efficiency Regulations. In 
California Code of Regulations Title 20. Public Utilities and 
Energy. Sec.  1601 1608. March 28, 2014. CEC-140-2014-002. 
www.energy.ca.gov/2014publications/CEC-140-2014-002/CEC-140-2014-002.pdf . A 2015 update to the CEC Title 20 Appliance Efficiency 
Regulations was released in July 2015. CEC-400-2015-021. http://www.energy.ca.gov/2015publications/CEC-400-2015-021/CEC-400-2015-021.pdf.
    \30\ Section 4.1.2 of ANSI/APSP/ICC-15a-2013.
    \31\ Consortium for Energy Efficiency (CEE). CEE High Efficiency 
Residential Swimming Pool Initiative. December 2012. http://library.cee1.org/sites/default/files/library/9986/cee_res_swimmingpoolinitiative_07dec2012_pdf_10557.pdf.
    \32\ ENERGY STAR Program Requirements Product Specifications 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.
    \33\ DOE notes that CA Title 20 actually requires that 
measurements of pump efficiency be conducted in accordance with 
ANSI/HI 1.6-2000, but does not explicitly extend this requirement to 
measured speed, flow, and input power, which are the variables 
necessary to calculate EF. Cal. Code Regs. section1604, subd. (g).
    \34\ 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). In addition, section 4.1.2.1.3 of ANSI/
APSP/ICC-15a-2013 describes curves A, B, and C as ``approximately'' 
representative of 2.0-inch, 1.5-inch, and 2.5-inch pipe, 
respectively.

                 Table III.3--Pump System Curve Formulas
------------------------------------------------------------------------
              Curve                               Formula
------------------------------------------------------------------------
A................................  Head (feet) = 0.0167 x Flow 2 (gpm)
B................................  Head (feet) = 0.050 x Flow 2 (gpm)
C................................  Head (feet) = 0.0082 x Flow 2 (gpm)
------------------------------------------------------------------------

    The majority of programs reference and require reporting on each of 
curves A, B, and C; however, programs differ in the number of operating 
speeds that are required to be tested. For example, CA Title 20 
requires manufacturers to report all applicable quantities \35\ on each 
curve at maximum speed only for single-speed dedicated-purpose pool 
pumps and at both maximum and minimum speeds for two-speed, multi-
speed, and variable-speed dedicated-purpose pool pumps. Cal. Code Regs. 
section1604, subd. (g). Conversely, ANSI/APSP/ICC-15a-2013 requires 
testing at maximum speed for single-speed pumps; all available speeds 
for multi-speed pumps (including two-speed pumps); and maximum, 
minimum, half, and most efficient speed for variable-speed dedicated-
purpose pool pumps.\36\ The load points specified by each program are 
summarized in Table III.4.
---------------------------------------------------------------------------

    \35\ CA Title 20 requires reporting of motor nominal speed 
(rpm), flow (gpm), power (W and volt amps (VA)), EF (gal/Wh). Cal. 
Code Regs. section 1606, subd. (a).
    \36\ Sections 4.1.2.1.4-4.1.2.1.6 of ANSI/APSP/ICC-15a-2013.

    Table III.4--Summary of Load Points Required by CA Title 20, ANSI/APSP/ICC-15a-2013, ENERGY STAR, and CEE
----------------------------------------------------------------------------------------------------------------
                                                  ANSI/APSP/ICC-15a-
      Pump speed(s)             CA title 20              2013               ENERGY STAR              CEE
----------------------------------------------------------------------------------------------------------------
Single-speed.............  Max Speed on Curves   Max Speed on Curves   Max Speed on Curves   N/A.*
                            A, B, & C.            A, B, & C.            A, B, & C.
Two-speed................  Max and Min Speed on  Max and Half Speed    Max and Half Speed    Max and Half Speed
                            Curves A, B, & C.     on Curves A, B, & C.  on Curves A, B, & C.  on Curve A.
Multi-speed..............  Max and Min Speed on  All Available Speed   All Available Speed   Max and Half Speed
                            Curves A, B, & C.     on Curves A, B, & C.  on Curves A, B, & C.  on Curve A.

[[Page 64599]]

 
Variable-speed...........  Max and Min Speed on  Max, Min, Half, and   Max, Min, and Most    Max, Half, and Most
                            Curves A, B, & C.     Most Efficient        Efficient Speed on    Efficient Speed on
                                                  Speed on Curves A,    Curves A, B, & C.     Curve A.
                                                  B, & C.
----------------------------------------------------------------------------------------------------------------
* CEE requires applicable pool pumps to meet an EF requirement at both a high and low speed and, therefore,
  single-speed pool pumps are not eligible for CEE qualification.

    In addition to requiring measurement and reporting of DPPP 
performance characteristics, CA Title 20,\37\ APSP/ANSI/ICC-15a-
2013,\38\ ENERGY STAR,\39\ and CEE \40\ contain prescriptive 
requirements regarding the design and characteristics of the DPPP motor 
and controls. Specifically, CA Title 20, ANSI/APSP/ICC-15a-2013, and 
ENERGY STAR all require that DPPP motors must:
---------------------------------------------------------------------------

    \37\ Cal. Code Regs. section 1605.3, subd. (g) and section 1604, 
subd. (g).
    \38\ Sections 4.1.1, ``Motors,'' and 4.2, ``Pump controllers'' 
of ANSI/APSP/ICC-15a-2013.
    \39\ ENERGY STAR Pool Pumps--Program Requirements Version 1.1. 
Available at https://www.energystar.gov/products/spec/pool_pumps_specification_version_1_0_pd.
    \40\ Consortium for Energy Efficiency (CEE). High Efficiency 
Residential Swimming Pool Initiative: Pool Pump Control 
Specification. January 1, 2013. http://library.cee1.org/sites/default/files/library/9988/cee_residential_pool_pump_control_specification_29414.pdf.
---------------------------------------------------------------------------

    (1) Have the capability of operating at two or more speeds, where 
the ``low'' speed has a rotation rate that is no more than one-half of 
the motor's maximum rotation rate, if the motor is 1 hp or greater;
    (2) be operated with an applicable multi-speed pump control with a 
default circulation speed no more than one-half of the motor's maximum 
rotation rate and whose high speed override capability, if available, 
does not extend for a period exceeding 24 hours; and
    (3) have their efficiency reported, as measured in accordance with 
the test method of the Institute of Electrical and Electronics 
Engineering (IEEE) 114-2001.
    CA Title 20 also requires that DPPP motors not be split-phase or 
capacitor start-induction run-type motors. Cal. Code Regs. section 
1605.3, subd. (g) and section 1604, subd. (g).
    In addition to the testing and prescriptive design requirements, 
ENERGY STAR \41\ and CEE \42\ also specify performance requirements 
based on EF at specified speed points on curve A only.\43\ The ENERGY 
STAR and CEE requirements are specified in Table III.5 and Table III.6, 
respectively. CA Title 20 \44\ and APSP/ANSI/ICC-15a-2013 do not 
currently have any minimum energy performance requirements (i.e., these 
programs do not specify a minimum EF requirement).
---------------------------------------------------------------------------

    \41\ ENERGY STAR Pool Pumps--Program Requirements Version 1.1. 
Available at https://www.energystar.gov/products/spec/pool_pumps_specification_version_1_0_pd.
    \42\ Consortium for Energy Efficiency (CEE). High Efficiency 
Residential Swimming Pool Initiative: Pool Pump Specification. 
January 1, 2013. Available at: http://library.cee1.org/sites/default/files/library/9987/cee_residential_pool_pump_specification_90947.pdf.
    \43\ DOE notes that, as acknowledged by Pentair during the DPPP 
Working Group meetings, while curve A is referenced in the CEE High 
Efficiency Residential Swimming Pool Initiative (see http://library.cee1.org/sites/default/files/library/9986/cee_res_swimmingpoolinitiative_07dec2012_pdf_10557.pdf), an error 
may have been made in establishing the CEE performance levels and 
that CEE is aware that some data were generated using curve C, where 
curve A was intended, resulting in the error. (Docket No. EERE-2015-
BT-STD-0008, Pentair, No. 38, p. 135)
    \44\ Cal. Code Regs. section 1605.3, subd. (g) and section 1604, 
subd. (g).

 Table III.5--Table ENERGY STAR Pool Pump Energy Factor Criteria at Pool
                       Pump Performance Curve A *
------------------------------------------------------------------------
                                                     Energy  efficiency
       Pump sub-variety           Speed setting        level  gal/Wh
------------------------------------------------------------------------
Single-Speed Pump.............  Single-Speed.....  EF >=3.80
Multi-Speed, Variable-Speed     Most Efficient     EF >=3.80
 and Variable-Flow Pump.         Speed.
------------------------------------------------------------------------
* Although the ENERGY STAR test method requires the testing and
  reporting of EF and other DPPP performance metrics at curves A, B, and
  C at various speed points, the ENERGY STAR specification is only
  applied on curve A at a single speed point.


                                  Table III.6--CEE Tier 1 and 2 EF Requirements
----------------------------------------------------------------------------------------------------------------
                                                                                                    High speed
               Efficiency level                      Lower speed * EF gal/Wh       Low speed **     [dagger] EF
                                                                                     EF gal/Wh        gal/Wh
----------------------------------------------------------------------------------------------------------------
CEE Tier 1....................................  No Requirement..................           >=3.8           >=1.6
CEE Tier 2....................................  >=12.0..........................           >=5.5           >=1.7
----------------------------------------------------------------------------------------------------------------
* Where ``lower speed'' is the optimal or most efficient speed for the pool pump, likely ranging from 600 to
  1,200 RPM.
** Where ``low speed'' is either the minimum speed for two-speed pumps or half the maximum speed for variable-
  speed pumps, typically 1,725 RPM.
[dagger] Where ``high speed'' is the maximum operating speed of the pump, usually 3,450 RPM.


[[Page 64600]]

    Internationally, the Australia state and territory governments and 
the New Zealand government operate the Energy Rating Labeling Program 
that relies on Australian Standard (AS) 5102-2009, ``Performance of 
household electrical appliances--Swimming pool pump--units, Parts 1 and 
2'' (AS 5102-2009) as the basis for the efficiency levels and testing 
requirements for residential pool pumps. The minimum energy performance 
standard in part 2 of AS 5102-2009 is stated in terms of a minimum EF 
at a single load point on a new, curve D, shown in Table III.7. The 
current MEPS is 8 liters/watt-hour (2.09 gal/Wh).

                     Table III.7--Curve D Definition
------------------------------------------------------------------------
             Metric equivalent               Imperial unit  equivalent *
------------------------------------------------------------------------
H (m) = 0.00018 Flow (L/min).**             H (ft) = 0.0084 x Flow
                                             (gpm).**
------------------------------------------------------------------------
* 1 liter/minute = gallons/minute.
** 1 meter (pressure) = feet (pressure).

    Finally, DOE notes that in January 2016, DOE published the January 
2016 general pumps TP final rule in which DOE established definitions, 
sampling plans, and a test procedure applicable to pumps. 81 FR 4086 
(Jan. 25, 2016). DOE established a new metric, the pump energy index 
(PEI), to rate the energy performance of pumps subject to that test 
procedure. 81 FR 4086, 4104-4109 (Jan. 25, 2016). That test procedure 
contains methods for determining pump energy index for continuous loads 
(PEICL) for pumps sold without continuous or non-continuous 
controls, and the pump energy index for variable loads 
(PEIVL) for pumps sold with either continuous or non-
continuous controls. Both PEICL and PEIVL 
describe the weighted average performance of the rated pump at specific 
load points, normalized with respect to the performance of a minimally 
compliant pump without controls. Id. Both PEICL and 
PEIVL can be generally evaluated as the weighted average 
input power to the motor or controls, if available, at specific load 
points over the weighted average input power to a pump and motor that 
is minimally compliant with DOE's energy conservation standards for 
general pumps established in a final rule also published in January 
2016 serving the same hydraulic load. 81 4086, 4104-4109 (Jan. 25, 
2016) (January 2016 general pumps TP final rule) and 81 FR 4368 (Jan. 
26, 2016) (January 2016 general pumps ECS final rule).
2. Proposed Metric: Weighted Energy Factor
    In developing an appropriate metric for dedicated-purpose pool 
pumps, the DPPP Working Group reviewed the applicable metrics (i.e., 
PEI, EF, WEF) and considered the advantage and disadvantages of each. 
Overall, DOE discussed with the DPPP Working Group the key objectives 
of any DPPP metric, including 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. (Docket No. EERE-2015-BT-STD-0008, No. 38 at pp. 207-208)
    The DPPP Working Group focused on defining a performance-based 
metric that is similar to EF metric currently used to describe DPPP 
performance by many existing programs, as presented in III.B.1, but 
that also accounts for the potential energy savings of equipment with 
multiple operating speeds. (Docket No. EERE-2015-BT-STD-0008, No. 38 at 
pp. 211-213) Specifically, the DPPP Working Group considered developing 
a metric that is a weighted average of the performance of a dedicated-
purpose pool pumps at multiple speed points along a representative 
system curve. Ultimately, the DPPP Working Group recommended using the 
weighted energy factor (WEF), which is defined as the ratio of the 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). (Docket No. EERE-2015-BT-STD-0008, No. 38 at pp. 209-223)
    The DPPP Working Group recommended weighting the measured flow and 
power individually in the numerator and denominator, respectively, 
instead of first calculating the EF at each load points and then 
weighting the calculated EF values at each load point together. The 
DPPP Working Group believed that weighting the individual flow and 
input power points instead of the EF values would be more 
representative of the relative energy performance of DPPP models. In 
particular, the DPPP Working Group determined that calculating the 
weighted average flow over the weighted average input power, as 
proposed, would result in a relative improvement in energy efficiency 
between single-speed, two-speed, multi-speed, and variable-speed 
equipment commensurate with that likely to be experienced in the field. 
Conversely, weighting the EF values directly would exaggerate the 
improvement resulting from variable speed technology. (Docket No. EERE-
2015-BT-STD-0008, ASAP, No. 48 at pp. 1-2; No. 57 at pp. 25-60)
    The equation for WEF is shown in the equation (1):
    [GRAPHIC] [TIFF OMITTED] TP20SE16.001
    
Where:

WEF = weighted energy factor in kgal/kWh;
wi = weighting factor at each load point i;
Qi = flow at each load point i in gal/min; \45\
---------------------------------------------------------------------------

    \45\ Pi,j and Qi,j are determined in 
accordance with December 2015 DPPP Working Group recommendations. 
(Docket No. EERE-2015-BT-STD-0008, No. 51 Recommendation #8 at p. 6) 
See section III.D for a discussion of this methodology.
---------------------------------------------------------------------------

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)

The specific load points and weights for each DPPP variety are 
discussed in section III.C.
    As seen in equation (1), this metric would be expressed in terms of 
kilogallons per kilowatt-hour (kgal/kWh), similar to the EF metric. 
Regarding the units of the WEF metric, members of the DPPP Working 
Group suggested that the values of flow and power be determined in 
gallons and watts, respectively, but the resultant WEF metric be 
represented in terms of kgal/kWh. DOE notes that this is inconsistent 
with the EF metric, which

[[Page 64601]]

represents in terms of gal/Wh, but is numerically identical because 
both the numerator and denominator are scaled consistently. Pentair 
stated that, because pools are often discussed in terms of thousands or 
tens of thousands of gallons, the pool industry often does not 
understand EF until it is explained as the ability to pump 10,000 
gallons for 1 kilowatt-hour of energy. (Docket No. EERE-2015-BT-STD-
0008, Pentair No. 59 at p. 132) Therefore, the DPPP Working Group 
recommended dividing the numerator and denominator by 1,000, to 
translate the flow, in gallons, and power, in W, to kilogallons and kW, 
respectively to facilitate the calculation of WEF in kgal/kWh, which 
are units that may be more readily understood by both the industry and 
the market.
    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. As such, based on 
the recommendations of the DPPP Working Group, DOE proposes to adopt 
the WEF metric as the performance-based metric for representing the 
energy performance of certain styles of dedicated-purpose pool pumps. 
DOE notes that any standards considered for any dedicated-purpose pool 
pumps for which the WEF applies would use this metric as a basis for 
the standard level. However, as discussed in section III.A.6, DOE notes 
that the WEF metric only is applicable to the varieties of dedicated-
purpose pool pumps for which the DPPP Working Group recommends 
performance standards.
    DOE requests comment on its proposal to adopt WEF as the metric to 
characterize the energy use of certain dedicated-purpose pool pumps and 
on the proposed equation for WEF.

C. Test Methods for Different DPPP Categories and Configurations

    As discussed in section III.B.2, DOE proposes to characterize the 
performance of dedicated-purpose pool pumps according to the WEF, which 
is calculated as the weighted average of the flow over the weighted 
average of the input power, each measured at different speeds and load 
points. Due to differences in equipment design and typical use 
profiles, the DPPP Working Group recommended that weights and load 
points be specified uniquely for each DPPP variety and pump speed 
configuration. Specifically, the DPPP Working Group recommended 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.C.1), as well as 
waterfall pumps (section III.C.1.e) and pressure cleaner booster pumps 
(section III.C.3), which reference only a single load point. (Docket 
No. EERE-2015-BT-STD-0008, No. 51 Recommendation #6 at p. 5) The load 
points and weights recommended by the DPPP Working Group in the 
December 2015 DPPP Working Group recommendations for each DPPP variety 
are summarized in Table III.8.

[[Page 64602]]

[GRAPHIC] [TIFF OMITTED] TP20SE16.002

    Subsequently, in the second round of negotiations, the DPPP Working 
Group reevaluated the recommended test procedure for pressure cleaner 
booster pumps. In the June 2016 DPPP Working Group recommendations, the 
DPPP Working Group recommended a revised load point of 10 gpm at the 
minimum head the pump can provide at or above 60 ft, where the pressure 
cleaner booster pump can vary speed to achieve the minimum head. 
(Docket No. EERE-2015-BT-STD-0008, No. 82, Recommendation #8 at pp. 4-
5).
    The load points for each DPPP variety are defined as the 
intersection of the head values described by the reference system 
curve,\46\ which describes the representative hydraulic characteristics 
of a typical installation for the specific DPPP variety, and the 
performance curve for any given dedicated-purpose pool pump at a given 
operating speed. Each intersection point, or load point, is specified 
in terms of head and flow. As each available operating speed on two-
speed, multi-speed, and variable-speed dedicated-purpose pool pumps 
represents a different performance curve, these pumps require multiple 
load points to effectively characterize their performance. The load 
points for self-priming and non-self-priming pool filter pump, 
waterfall pumps, and pressure cleaner booster pumps are discussed in 
the subsequent sections.
---------------------------------------------------------------------------

    \46\ Note the ``reference system curve'' is a flat head value 
for waterfall pumps and pressure cleaner booster pumps.
---------------------------------------------------------------------------

1. Self-Priming and Non-Self-Priming Pool Filter Pumps
    This section identifies the different speed configurations, load 
points, and weighting factors for both self-priming and non-self-
priming pool filter pumps. As noted in section III.A.3, 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 are comparable in 
most instances. In addition, the DPPP Working Group acknowledged that 
both varieties of pool filter pumps could theoretically be installed in 
either aboveground or inground pools, depending on the requirements of 
the particular application. (Docket No. EERE-2015-BT-STD-0008, No. 57 
at pp. 329-331) Specifically, the CA IOUs noted that the pump curves 
from several manufacturers for aboveground pool filter pumps are 
similar to those for the manufacturers' respective inground pumps. 
(Docket No. EERE-2015-BT-STD-0008, CA IOUs, No. 57 at p. 329) In 
addition, the DPPP Working Group discussed how the referenced system 
curves A, B, and C primarily were developed based on inground pools, 
and

[[Page 64603]]

that little data exists regarding the representative system curves for 
aboveground pools. (Docket No. EERE-2015-BT-STD-0008, Waterway, No. 39 
at p. 54; Waterway, No. 53 at pp.146-147; CA IOUs, No, 53 at p. 147)
    To provide comparability between WEF ratings for self-priming and 
non-self-priming pool filter pumps, the DPPP Working Group recommended 
the same reference system curve for both self-priming and non-self-
priming pool filter pumps. Specifically, the DPPP Working Group 
discussed how curve C, which pertains to 2.5-inch piping, is a 
reasonable representation of typical existing pool installations, and 
would only become more common as new pools typically are designed with 
2.5-inch piping (curve C), instead of the more restrictive 1.5-inch 
(curve B) plumbing design that is more common in older pools. (Docket 
No. EERE-2015-BT-STD-0008, CA IOUs, No. 59 at p. 98; Hayward, No. 59 at 
pp. 106-107; Waterway, No. 53 at p. 146; DOE, No. 53 at pp. 147-148) 
Accordingly, consistent with the recommendations of the DPPP Working 
Group, DOE proposes that self-priming and non-self-priming pool filter 
pumps be tested at specific load points specified along curve C (see 
Table III.3).
    DOE requests comment on its proposal to test self-priming and non-
self-priming pool filter pumps at load points specified along curve C 
to determine the WEF for such pumps.
    In addition to the specified system curve, the DPPP Working Group 
recommended specific operating speeds or flow points that would dictate 
the different load points for the different speed configurations of 
self-priming and non-self-priming pool filter pumps (see Table III.8). 
The specific load points for single-speed, two-speed, multi-speed, and 
variable-speed pool filter pumps are discussed in sections III.C.1.a, 
III.C.1.b, and III.C.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. Therefore, the DPPP Working Group 
recommended testing single-speed pool filter pumps at the pump's 
maximum, and only, speed of rotation on curve C. 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 and the system curve C, as shown in Figure III.2. DOE 
believes the load point recommended by the DPPP Working Group is 
representative of the performance of single-speed pool filter pumps and 
provides an equitable comparison among equipment.
[GRAPHIC] [TIFF OMITTED] TP20SE16.003

    DOE requests comment on its proposal to test single-speed pool 
filter pumps at a single load point corresponding to the maximum speed 
for that pump on curve C.
b. Two-speed Pool Filter Pumps
    Two-speed pumps, by definition and design, are capable of operating 
at two discrete speeds. As such, the DPPP Working Group recommended 
evaluating performance at two load points, which would capture the 
differing performance at the high and low speeds. The Working Group 
also agreed that these two load point are representative of the typical 
operation of two-speed pool filter pumps in the field. Specifically, 
the DPPP Working Group discussed that two-speed pool filter pumps 
perform two functions: (1) Long-term filtration at low speed and low 
flow to provide an adequate ``turnover rate'' \47\ and (2) short-term 
cleaning or mixing at high speed and high flow to

[[Page 64604]]

operate suction-side pool cleaners and ensure proper mixing of the 
water.48 49 50 As discussed in section III.B.1, many of the 
existing regulatory and voluntary programs identified in the United 
States require that the low speed on two-speed pumps is at least 50 
percent lower than the maximum, or high, speed of rotation. 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. (Docket No. EERE-2015-BT-STD-0008, 
No. 51, Recommendation # 6, at p. 5) Figure III.3 illustrates these 
test points.
---------------------------------------------------------------------------

    \47\ The turnover rate is described in the pool industry (and 
defined in ANSI/APSP/ICC-15a-2013) as ``the total number of times 
the entire volume of water in the pool is circulated (or ``turned 
over'') in a time period of 24 hours.'' For residential pools, ANSI/
APSP/ICC-15a-2013 recommends a minimum turnover time of 12 hours, 
which results in a turnover rate of two. For commercial and public 
pools, requirements for turnover rates and times are typically set 
by local authorities.
    \48\ Rainer, L. Proposal Information Template for: Residential 
Pool Pump Measure Revisions. 2008. Prepared for PG&E. 
www.energy.ca.gov/appliances/2008rulemaking/documents/2008-05-15_workshop/other/PGE_Updated_Proposal_Information_Template_for_Residential_Pool_Pump_Measure_Revisions.pdf.
    \49\ SCE. Commercial Variable Speed Pool Pump Market 
Characterization and Metering Study. February 2015. www.etcc-ca.com/sites/default/files/reports/et13sce1170_comm_vfd_pool_pumps_final.pdf.
    \50\ CA IOUs. Pools & Spas Codes and Standards Enhancement 
(CASE) Initiative for PY 2013: Title 20 Standards. July 29, 2013. 
http://www.energy.ca.gov/appliances/2013rulemaking/documents/proposals/12-AAER-2F_Residential_Pool_Pumps_and_Replacement_Motors/California_IOUs_Response_to_the_Invitation_to_Submit_Proposals_for_Pool_and_Spas_2013-07-29_TN-71756.pdf.
---------------------------------------------------------------------------

    To test applicable two-speed dedicated-purpose pool pumps at the 
low speed point, the pump operating speed should be reduced to the low-
speed setting to achieve the specified flow rate. If the two-speed pump 
has a low-speed setting that is exactly one-half of the high speed 
setting, as is typical of pool filter pump design, the low-speed 
setting will result in a flow rate that is exactly one-half of the flow 
rate at maximum speed on curve C. In addition, the resultant head point 
will be exactly on curve C, as shown on the dashed line in Figure 
III.3.\51\ However, this load point is only possible for pumps with the 
low-speed setting equivalent to one-half of the rotating speed of the 
maximum speed setting.
---------------------------------------------------------------------------

    \51\ The pump affinity laws describe the relationship of pump 
operating speed, flow rate, head, and hydraulic power. According to 
the affinity laws, speed is proportional to flow such that a 
relative change in speed will result in a commensurate change in 
flow. The affinity laws also establish that pump total head is 
proportional to speed squared and hydraulic power is proportional to 
speed cubed.
[GRAPHIC] [TIFF OMITTED] TP20SE16.004

    For any pool filter pumps that may have a low-speed setting lower 
than one-half of the maximum speed, the low-speed setting would not be 
able to achieve a flow rate of one-half the flow rate at maximum speed. 
Therefore, in order to achieve the specified flow point, such a pump 
would be required to operate at the high-speed setting and be throttled 
in order to achieve a flow rate of exactly one-half of the flow rate at 
maximum speed, as shown in Figure III.4 (option 1). This would result 
in a WEF that is lower (less efficient) than two-speed pumps with a 
low-speed setting that is exactly one-half of the maximum operating 
speed. Throttling the high-speed of a two-speed pump, rather than 
utilizing the low-speed, would not capture the actual efficiency, and 
thus the actual potential energy savings, of the pump when operated at 
low speed.

[[Page 64605]]

[GRAPHIC] [TIFF OMITTED] TP20SE16.005

    DOE notes that an alternative option for testing a two-speed pump 
would be to specify the low-speed load point as the point where that 
pump performance curve intersects curve C (option 2). This would result 
in a WEF that is higher (more efficient) than comparable two-speed 
pumps with low-speed settings that are higher (e.g., one-half of 
maximum speed or higher).
    Although two-speed pumps typically are equipped with alternating 
current (AC) induction motors that can operate with either 2- or 4-
poles \52\ activated, offering nominal synchronous operating speeds of 
3,600 or 1,800 rpm, respectively, DOE notes that, due to motor slip, 
the motor may rotate at slightly less than half of the maximum speed of 
rotation. Alternatively, two-speed motors may be available with a low 
speed option that is less than half of the maximum speed, for example 
Waterway noted the potential for 2-/6-pole DPPP models that would be 
capable of operating at either 3,600 or 1,200 rpm, respectively. (EERE-
2015-BT-STD-0008, Waterway, No. XX at pp. YYY) DOE does not believe 
that testing such a pump at only the high-speed setting would be 
representative of the performance of such pumps. Specifically, DOE 
understands, based on discussions with the DPPP Working Group, that 
most pumps would be sized and installed in a given pool application 
based on the low-speed flow rate, to provide adequate filtration at 
that speed and flow. The pump would be turned up to high speed 
periodically to provide the cleaning/mixing function. (EERE-2015-BT-
STD-0008, CA IOUs, No. 58 at pp. 152--53; CA IOUs, No. 53 at p. 159--
60; CA IOUs, No. 56 at p. 31; CA IOUs, No. 57 at pp.358--59) DOE 
believes this is the case for all two-speed pumps, regardless of their 
relative low- and high-speed settings and, therefore, believes that it 
is most representative to test all two-speed pumps at the low-speed 
setting on curve C. DOE also notes that, based on the proposed 
definition of a two-speed pump, a pump that operates at two speeds with 
a low speed that is greater than one-half of the maximum speed is not 
considered a two-speed dedicated-purpose pool pump. Dedicated-purpose 
pool pumps that have a second operating speed that is lower than the 
maximum speed but higher than one-half of the maximum speed would be 
tested as single-speed dedicated-purpose pool pumps.
---------------------------------------------------------------------------

    \52\ Poles are the number of sets of three-way electromagnetic 
windings contained within a motor. A 2-pole motor has one set of 
three-way windings, a 4-pole as two sets, and a 6-pole has three 
sets. The speed of the motor is a function of both the operating 
frequency and the number of poles in the motor.
---------------------------------------------------------------------------

    To provide consistent and comparable ratings among two-speed pool 
filter pumps, DOE proposes to establish the following two test points 
for two-speed pool filter pumps: (1) A high flow point at the maximum 
speed at curve C and (2) a low flow point at the low-speed setting on 
curve C. DOE believes that these test points are representative of 
typical pool filter pump operation and energy performance. 
Specifically, DOE believes that the high flow and speed load point 
effectively characterizes the efficiency of the pump in a cleaning/
mixing application, and low speed and low flow load point characterizes 
the efficiency of the pump in a typical filtration application. DOE 
also believes that the proposed load points for two-speed pool filter 
pumps are consistent with the intent of the DPPP Working Group. While 
DOE acknowledges that the DPPP Working Group specifically recommended a 
flow rate of one-half of the flow rate at the maximum speed of rotation 
on curve C, DOE believes the DPPP Working Group was considering only 
the most common two-speed pool filter pump design, with low-speed equal 
to one-half the maximum speed, when specifying the load points. (Docket 
No. EERE-2015-BT-STD-0008, No. 51, Recommendation # 6, at p. 5)

[[Page 64606]]

DOE believes, based on the discussions of the DPPP Working Group, that 
the Working Group intended for two-speed pumps with low-speed settings 
other than one-half of the maximum speed of rotation to be operated at 
that low-speed setting and not throttled to achieve a specific flow 
value, as that is not likely to occur in the field.
    However, by specifying that two-speed pool filter pumps would be 
tested at the low speed that is available on the pump, DOE recognizes 
that there is an opportunity for manufacturers to improve their WEF 
score by offering a low speed with a slower speed of rotation. While, 
in most cases, DOE believes that such differentiation is warranted, the 
DPPP Working Group acknowledged on several occasions that there is a 
minimum flow rate that is required for effective pool filtration and 
that flow rates below that minimum value are not useful and do not 
result in energy savings in the field. (EERE-2015-BT-STD-0008, Pentair, 
No. 53 at p. 136; CA IOUs, No. 53 at p. 136-137) Therefore, DOE 
believes that two-speed pool filter pumps with a low speed of rotation 
below a minimum threshold that is deemed reasonable for pool 
applications should not be able to be tested to determine the WEF 
rating of the pump, as such a rating would not be representative of the 
pump's performance in the field.
    For multi-speed and variable-speed pool filter pumps, DOE proposes 
to establish discrete flow points, specified as a function of the 
pump's rated hydraulic horsepower at maximum speed on curve C, that are 
intended to represent the minimum flow rate for typical ``small'' and 
``large'' pool applications (see section III.C.1.c for more 
discussion). Specifically, in section III.C.1.c DOE proposes a low flow 
rate of 24.7 gpm for multi-speed and variable-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 multi-speed and 
variable-speed pool filter pumps that have a hydraulic output power 
greater than 0.75 (large pool filter pumps). DOE believes these flow 
rates would also be representative minimum flow rates for two-speed 
pool filter pumps and would effectively prevent the inclusion of 
unreasonably low speeds on two-speed pool filter pumps for the sole 
purpose of inflating WEF ratings.
    DOE proposes that the low speed flow rate cannot be below 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 that the low 
speed flow rate of cannot be below 31.1 gpm for two-speed pool filter 
pumps that have a hydraulic output power greater than 0.75 hp (large 
pool filter pumps). If a two-speed pump has a flow rate below the 
specified value at low speed, the low speed of that pump would not be 
tested. That is, the pump would only be tested at the high speed 
setting, similar to a single-speed pump, since the low speed setting 
results in a flow rate below the specified low flow rate on curve C. 
DOE is not aware of any such two-speed pumps that currently have a 
speed below the stated values. However, DOE believes the proposed test 
procedure is representative of the potential use of any such pumps, as 
any available low speeds that result in flow rates below the specified 
flow rates would not be useful and, therefore, would not be used in the 
field.
    DOE requests comment on the proposed load points 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).
    In particular, DOE requests comment on the load points for two-
speed pool filter pumps with a low-speed setting that is higher or 
lower than one-half of the maximum speed setting.
    DOE also requests comment on the availability and any examples of 
two-speed pool filter pumps with a low-speed setting that are not 
exactly one-half of the maximum speed setting.
c. Variable-Speed and Multi-Speed Pool Filter Pumps
    Although the DPPP Working Group suggested that DOE separately 
define variable-speed and multi-speed pool filter pumps, they 
recommended that the same test procedure be applied to both speed 
configurations. (Docket No. EERE-2015-BT-STD-0008, No. 51, 
Recommendation # 6, at p. 5) For variable- and multi-speed pool filter 
pumps, the DPPP Working Group also 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.C.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. 
Specifically, as shown in Table III.9, the DPPP Working Group 
recommended testing multi- and variable-speed pool filter pumps at (1) 
a high-speed load point that is achieved by running the pump at 80 
percent of maximum speed (and flow rate) on curve C and (2) a low-speed 
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. (Docket No. EERE-2015-BT-STD-0008, No. 51, 
Recommendation #6 at p. 5)

              Table III.9--Variable- and Multi-Speed Load Points Recommended by DPPP Working Group
----------------------------------------------------------------------------------------------------------------
          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
                                 Qmax\speed@c.                                            for which the pump can
                                                                                          achieve the specified
                                                                                          flow rate (a pump may
                                                                                          vary speed to achieve
                                                                                          this load point).
Low Speed.....................  Qlow(gpm) =
                                    If pump      H>=0.0082 x Qlow\2\
                                    hydraulic hp at max
                                    speed on curve C is
                                    >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.
----------------------------------------------------------------------------------------------------------------

    The DPPP Working Group recommended these flow rates because the 
range of operating speeds available in multi- and variable-speed pool 
filter pumps affects the typical sizing and operation of the pumps in 
the field. Specifically, the DPPP Working Group recommended a high flow 
rate of 80 percent of the flow at maximum speed

[[Page 64607]]

on curve C to reflect the ability of variable-speed and some multi-
speed pumps to be ``right-sized'' and provide a specific amount of flow 
that may be less than the flow rate at maximum speed on curve C. (EERE-
2015-BT-STD-0008, No. 57 at pp. 388-405) The DPPP Working Group 
discussed how dedicated-purpose pool pumps are typically over-sized 
and, therefore, may not require the maximum amount of flow the pump can 
provide. (EERE-2015-BT-STD-0008, CA IOUs, No. 53 at pp. 142-143; 
Waterway, No. 54 at p. 51) Such oversizing often occurs as a result of 
the discrete horsepower sizes available, where a dedicated-purpose pool 
pump with pump horsepower slightly larger than that required may be 
installed when the calculated load is between two discrete nominal 
horsepower sizes. (EERE-2015-BT-STD-0008, Waterway, No. 57 at pp. 396-
397) In addition, a larger variable speed pump than needed may also be 
installed in some installations to ensure the dedicated-purpose pool 
pump will be able to accommodate the pool volume, even if the pool 
filter becomes dirty.\53\ For example, the Independent Pool & Spa 
Service Association (IPSSA) recommends, in their basic training manual, 
to oversize the pump by 25 percent.\54\
---------------------------------------------------------------------------

    \53\ As the pool filter accumulates debris, this increases the 
dynamic head within the pool system plumbing
    \54\ Independent Pool & Spa Service Association (IPSSA) Inc. 
2008. Basic Training Manual. Prepared by Robert Lowry of Lowry 
Consulting Group, LLC, for the IPSSA.
---------------------------------------------------------------------------

    The DPPP Working Group also recommended that the high flow point be 
determined at the lowest speed available on the pump with a head point 
that is on or above curve C. (Docket No. Docket No. EERE-2015-BT-STD-
0008, No. 51, Recommendation #6 at p. 5) DOE notes that, for some 
multi-speed pumps, the high flow point may be determined at the maximum 
operating speed of the pump and may not be on curve C, as the multi-
speed pump does not have a lower operating speed available that can 
also provide 80 percent of the flow rate at maximum speed on curve C. 
For example, a three-speed dedicated-purpose pool pump that can operate 
with 2-, 4-, or 6-poles is capable of operating only at the discrete 
speeds of 3,600, 1,800, and 1,200 rpm, respectively. For such a pump, 
the lower operating speeds of 1,800 and 1,200 rpm would not be capable 
of providing a flow rate of 80 percent of the flow rate at maximum 
speed on curve C. Therefore, the aforementioned three-speed pump would 
need to be tested at the maximum operating speed 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.5.
[GRAPHIC] [TIFF OMITTED] TP20SE16.006

    DOE believes that such operation is representative of the energy 
use of multi-speed pumps, as they would not be able to achieve the 80 
percent reduction in speed at the high flow point and, therefore, would 
not be able to be ``right-sized'' to provide a specific flow rate. 
Also, specifying the same flow rate for variable-speed and multi-speed 
pumps results in WEF ratings that are more directly comparable between 
the speed configurations.
    As a result, DOE proposes to accept the DPPP Working Group 
recommendation that the high flow load point be determined at 80 
percent of flow rate of the maximum speed of the pump on or above curve 
C. (Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendation #6 at p. 
5) That is, all multi-speed and variable-speed pumps will be first 
evaluated at maximum speed on curve C to determine the flow rate at 
that point. Then, the pump speed will be reduced and/or the pump total 
head will be increased to achieve a flow rate equivalent to 80 percent 
of the flow rate measured at the maximum operating speed on curve C for 
that pump. The flow and input power to the

[[Page 64608]]

pump at this 80 percent load point would be used to represent the 
performance of the pump at high speed and flow in calculating the WEF.
    DOE requests comment on the proposal to specify the high speed and 
flow point for multi-speed and variable-speed pool filter pumps 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.
    Specifically, DOE requests 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.
    To develop the low flow rate for variable- and multi-speed pool 
filter pumps, the DPPP Working Group considered the unique application 
and operation of multi-speed and variable-speed dedicated-purpose pool 
pumps in the field. That is, the DPPP Working Group commented that, as 
multi-speed and variable-speed pumps are able to operate at speeds and 
flow rates significantly lower than their maximum operating speed, 
larger pumps may be installed in a given application than would 
otherwise be required, but the flexibility in operating speeds provides 
the ability to operate the pool filter pump at only the required 
minimum filtration flow rate for the given application. That is, a 
variable-speed pump with a rated hydraulic horsepower of 1.5 hp 
(approximately 3 nameplate horsepower \55\) may be installed to replace 
a two-speed pump with a rated hydraulic horsepower of 1 hp 
(approximately 1 nameplate horsepower), but would still be capable of 
providing the same (or lower) pool filtration flow rate than the pump 
it is replacing. (EERE-2015-BT-STD-0008, CA IOUs, No. 57 at p. 280) 
Therefore, instead of specifying the low flow point in terms of the 
maximum or available operating speeds of the pump, the DPPP Working 
Group recommended specifying the low flow points as specific, discrete 
flow rates that are representative of the typical flow rates observed 
in the field.
---------------------------------------------------------------------------

    \55\ Nameplate horsepower refers to the nameplate, or rated, 
horsepower of the motor, see section III.E.1 for more details.
---------------------------------------------------------------------------

    To develop a methodology to assign specific flow rates to specific 
sizes of multi-speed and variable-speed pool filter pumps, DOE and the 
DPPP Working Group reviewed the available data regarding the range of 
typical pool filter pump filtration flow rates and most common rated 
hydraulic horsepower sizes for pool filter pumps. Specifically, the DOE 
identified a bimodal distribution of rated hydraulic horsepower sizes 
for DPPP models in the population of self-priming pool filter pumps, 
with a higher frequency of DPPP models having rated hydraulic 
horsepowers of 0.5 and 0.75. (EERE-2015-BT-STD-0008, CA IOUs, No. 57 at 
pp. 308-315) To effectively differentiate multi- and variable-speed 
pool filter pumps appropriate for smaller pools from those appropriate 
for larger pools,\56\ the DPPP Working Group recommended a threshold of 
0.75 rated hydraulic horsepower. (Docket No. EERE-2015-BT-STD-0008, No. 
51, Recommendation #6 at p. 5) That is, ``small'' multi-speed and 
variable-speed pool filter pumps with a rated hydraulic horsepower less 
than or equal to 0.75 would be associated with one specific flow rate 
typical of smaller pools and ``large'' multi-speed and variable-speed 
pool filter pumps with a rated hydraulic horsepower larger than 0.75 
would be associated with one specific flow rate typical of larger 
pools.
---------------------------------------------------------------------------

    \56\ DOE reiterates that the DPPP Working Group also recommended 
separate load points for pool filter pumps above 2.5 hydraulic 
horsepower (see section III.A.6) and refers to such pumps throughout 
this document as ``very large pool filter pumps.''
---------------------------------------------------------------------------

    To develop the specific flow rates for representative small and 
large pools, DOE developed flow rates that were representative of flow 
rates for the most common rated hydraulic horsepower sizes of 
dedicated-purpose pool pumps (i.e., 0.5 and 0.75 rated hydraulic 
horsepower). To do this, DOE referenced the relationship between 
hydraulic horsepower and flow rate inherent in the method for 
calculating hydraulic horsepower shown in equation (2):
[GRAPHIC] [TIFF OMITTED] TP20SE16.007

Where:

H = head in feet,
Q = flow in gallons per minute, and
SG = specific gravity of water, which can be assumed to be 1.00 
based upon the definition of clean water used in HI 40.6.

    Assuming that curve C is a representative system curve for pools, 
head can also be specified for these pumps according the equation 
describing curve C (i.e., H = 0.0082 x Q\2\). Then, by rearranging 
equation (2) to specify flow in terms of head and hydraulic power, and 
by substituting the equation for curve C for head, a relationship can 
be developed that describes the filtration flow rate on curve C for a 
given pump in terms of the hydraulic horsepower provided at low speed, 
as shown in equation (3).
[GRAPHIC] [TIFF OMITTED] TP20SE16.008

Where:

Qlow = the low filtration flow rate (gpm) and
PHydraulic,low = hydraulic horsepower of the pump at the 
low flow rate on curve C (hp).

    DOE notes that this method is consistent with the typical sizing 
methods for pool filter pumps described in the industry (i.e., IPSSA), 
where the necessary pump size required to accomplish the filtration 
function in pools is typically determined based on the necessary flow 
and head required on the pool system curve.\57\ However, as pump size 
is typically described with respect to the maximum operating speed of 
the pump, rather than the low speed, the difference in speed between 
the low flow point and the maximum speed of the pump must be accounted 
for in order to accurately estimate the typical

[[Page 64609]]

flow rates provided by the common pump hydraulic horsepower sizes found 
in DOE's DPPP database. DOE assumed a 50 percent speed reduction, which 
is representative of the difference between the high- and low-speeds 
for two-speed pumps and the least efficient assumption for multi-speed 
and variable-speed pumps. Accordingly, equation (3) can be updated to 
determine a representative relationship between the low flow rate and 
the rated hydraulic horsepower on curve C at maximum speed of any given 
pump, as shown in equation (4):
---------------------------------------------------------------------------

    \57\ Independent Pool & Spa Service Association (IPSSA) Inc. 
2008. Basic Training Manual. Prepared by Robert Lowry of Lowry 
Consulting Group, LLC, for the IPSSA.
[GRAPHIC] [TIFF OMITTED] TP20SE16.009

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

Qlow = the low filtration flow rate (gpm) and
PHydraulic = hydraulic horsepower of the pump at maximum 
speed on curve C (i.e., rated hydraulic horsepower, see section 
III.E.1) (hp).

    Finally, similar to the logic applied when specifying the high flow 
point for multi-speed and variable-speed pool filter pumps, the DPPP 
Working Group considered that two-speed pool filter pumps, which the 
multi-speed and variable-speed pool filter pumps would replace, are 
typically oversized. That is, the required size to achieve a given flow 
rate would be calculated according to equation (4), but if the required 
horsepower landed between two horsepower bins, the pump would be up-
sized to the next highest discrete nominal motor horsepower bin. In 
this case, DOE and the DPPP Working Group assumed a fixed amount of 
oversizing based on the difference in horsepower between the nominal 
motor horsepower bins, or 0.25 hydraulic horsepower. (Docket No. EERE-
2015-BT-STD-0008, No. 56 at pp. 209-210) In doing so, DOE presumes 
that, even at low speed, the two-speed pump may be providing slightly 
more flow than is required to achieve the desired turnover rate in a 
given pool and, therefore, installing a variable-speed pump will allow 
for the exact amount of flow to be delivered and minimize excess flow 
and associated energy consumption. Using this method, DOE derived a 
representative flow rate for small pool filter pumps (with rated 
hydraulic horsepower at 0.5 hp) of 24.7 gpm and a representative flow 
rate for the large pool filter pumps (with rated hydraulic horsepower 
of 0.75 hp) of 31.1 gpm.
    To relate these representative flow rates to the range of available 
multi-speed and variable-speed rated hydraulic horsepower sizes, the 
DPPP Working Group determined that it would be most representative to 
assign flow rates based on the comparable common DPPP size that any 
given multi-speed or variable-speed pool filter pump would be intended 
to replace. (Docket No. EERE-2015-BT-STD-0008, No. 57 at pp. 276-283). 
That is, small multi-speed and variable-speed pool filter pumps with 
rated hydraulic horsepower less than or equal to 0.75 are assumed to 
compete with and serve the same applications as a 0.5 rated hydraulic 
horsepower pump, which is associated with a ``representative'' curve C 
low, filtration flow rate of 24.7 gpm. Similarly, large multi-speed and 
variable-speed pool filter pumps are assumed to compete with pumps that 
are, at a minimum, 1 rated hydraulic horsepower and that typically 
operate at a low filtration flow rate of 31.1 gpm.
    To verify the representativeness of the specified low flow points 
for multi-speed and variable-speed pool filter pumps, the DPPP Working 
Group reviewed typical pool sizes and turnover rates to determine a 
range of typical flow rates. The DPPP Working Group discussed that the 
majority of pools are between 15,000 and 25,000 gallons, and most pools 
of this size are operated with a turnover time of 12 hours. (Docket No. 
EERE-2015-BT-STD-0008, No. 59 at pp. 87-88) Specifically, ANSI/NSPI-5 
2003, Residential Inground Swimming Pools, recommends a turnover time 
of 12 hours. This would result in a turnover rate of one to two turns 
per day, depending on if the pump is operating 24 hours per day or not. 
DOE notes that a turnover time greater than 12 hours is typically not 
feasible because the flow rate would be below the minimum required flow 
rate for proper operation of the pool filters, heater, and other 
ancillary equipment. That is, CA IOUs and Pentair noted that flow rates 
below 25 gpm are not representative of typical pool operation because 
they are below the minimum operating speed of some pool components. 
(Docket No. EERE-2015-BT-STD-0008, CA IOUs, No. 53 at pp. 136-137; 
Pentair, No. 53 at p. 136)
    Assuming a 12-hour turnover time and the typical range of pool 
sizes noted above, typical filtration flow rates range from 21 to 35 
gpm, as shown in Table III.10. This is consistent with CA IOUs 
observation that typical pool filtration flow rates should be around 25 
to 30 gpm. (EERE-2015-BT-STD-0008, CA IOUs, No. 57 at p. 280) 
Therefore, the DPPP Working Group determined that the low flow points 
for multi-speed and variable-speed pool filter pumps of 24.7 and 31.1 
gpm were reasonable and representative of most residential pool 
applications.

 Table III.10--Typical Flow Rates By Pool Volume for a 12-hour turnover
                                 time *
------------------------------------------------------------------------
         Pool Volume  (gallons)            15,000     20,000     25,000
------------------------------------------------------------------------
Flow Rate gpm..........................        21         28         35
------------------------------------------------------------------------
* Data in the table were presented during the December 2015 Working
  Group meeting (EERE-2015-BT-STD-0008, No. 50 at p. 12) for average
  pool sizes based on sales data.

    Based on this analysis, DOE agrees with the DPPP Working Group that 
flow rates of 24.7 gpm and 31.1 gpm are representative of flow rates 
that are typical for small and large pool filter pumps that are multi-
speed and variable-speed, respectively. DOE also notes that such an 
approach would ensure that variable-speed pool filter pumps would 
always perform better than a two-speed pump in the same application, 
which DOE believes is reflective of the relative energy consumption of 
two- versus variable-speed pool filter pumps in the field. Therefore, 
consistent with the recommendations of the DPPP Working Group, DOE 
proposes to test multi-speed and variable-speed pool filter pumps that 
have a hydraulic output power less than or equal to 0.75 hp (small pool 
filter pumps) at a low flow rate of 24.7 gpm and multi-speed and 
variable-speed pool filter pumps that have a hydraulic output power 
greater than 0.75 and less than 2.5 hp (large pool filter pumps) at a 
low flow rate of 31.1 gpm, as summarized in Table III.9. (Docket No. 
EERE-2015-BT-STD-0008, No. 51, Recommendation #6 at p. 5)
    DOE recognizes that this proposal, similar to the proposal for the 
high flow point for multi-speed and variable-speed pumps, does not 
explicitly specify the head or speed at which the pump operates at the 
low flow points. Instead, DOE proposes that the low and high flow rates 
would be achieved at the

[[Page 64610]]

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 proposes 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 for the low-flow 
(Qlow) test point, similar to the high-flow 
(Qhigh) test point.
    DOE requests comment on the proposed low flow points for small and 
large multi-speed and variable-speed pool filter pumps.
    DOE also requests comment on the treatment of multi-speed pumps and 
proposal to test multi-speed pumps at the lowest available speed that 
can meet the specified flow with a head point that is at or above curve 
C for low-flow (Qlow) test point, similar to the high-flow 
(Qhigh) test point.
d. Weighting Factor for Various Load Points
    As WEF is calculated as the weighted average flow rate over the 
weighted average input power to the dedicated-purpose pool pump at 
various load points, as described in equation (1), DOE also must assign 
weights to the load points discussed above for each self-priming or 
non-self-priming pool filter pump. During the Working Group meetings, 
the DPPP Working Group discussed and ultimately recommended weights for 
the various speed configurations of pool filter pumps, as summarized in 
Table III.11. (Docket No. EERE-2015-BT-STD-0008, No. 51 Recommendation 
#7 at p. 5)

    Table III.11--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 Pumps and     Single...................................  ..............             1.0
 Non-Self-Priming Pool Filter Pumps.
                                       Two/Multi/Variable *.....................            0.80            0.20
----------------------------------------------------------------------------------------------------------------
* DOE notes that the DPPP Working Group recommendations explicitly recommended weights separately for ``Multi-
  Speed'' and ``Variable-Speed'' pool filter pump, but not for ``Two-speed'' pool filter pumps. DOE believes
  that this is an oversight in the documentation of the DPPP Working Group recommendation, as the DPPP Working
  Group intended all two-speed, multi-speed, and variable-speed pool filter pumps to have the same weights of
  0.2 at the high flow point and 0.8 at the low flow point. (Docket No. EERE-2015-BT-STD-0008, No. 57 at pp. 426-
  429)

    Specifically, for single-speed self-priming and non-self-priming 
pool filter pumps, because such pumps are tested at only one speed, the 
weight assigned to the single high flow point is 1.0. For two-speed, 
multi-speed, and variable-speed pool filter pumps, DOE analyzed all 
available data regarding representative operating profiles for pool 
filter pumps to determine representative weights for these pumps and 
presented such analysis to the DPPP Working Group.\58\ Based on DOE's 
analysis and the collective industry experience of the DPPP Working 
Group members, the DPPP Working Group recommended weights of 0.20 at 
the high flow point and 0.80 at the low flow point. Although the DPPP 
Working Group acknowledged that the relative operation of any given 
pool filter pump would be variable based on the specific application, 
the DPPP Working Group believed that these weights would be most 
representative of the typical application and operation of dedicated-
purpose pool pumps in the field. (Docket No. EERE-2015-BT-STD-0008, No. 
57 at pp. 355-367)
---------------------------------------------------------------------------

    \58\ DOE's analysis of representative weights for different 
varieties and speed configurations of dedicated-purpose pool pumps 
is available in the docket for this rulemaking. (Docket No. EERE-
2016-BT-TP-0002)
---------------------------------------------------------------------------

    In consideration of the DPPP Working Group recommendation, as well 
as DOE's own analysis, DOE proposes to use the weighting factors 
proposed by the DPPP Working Group and summarized in Table III.11 for 
self-priming and non-self-priming pool filter pumps.
    DOE requests comment on the proposal to use a weight of 1.0 for 
single-speed pool filter pumps and weights of 0.20 for the high flow 
point and 0.80 for the low flow point for two-speed, multi-speed, and 
variable-speed pool filter pumps.
e. Applicability of Two-Speed, Multi-Speed, and Variable-Speed Pool 
Filter Pump Test Methods
    As discussed in section III.A.7, DOE proposes 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 pool filter pump, as described in sections III.C.1.a 
through III.C.1.c. The definitions for two-speed, multi-speed, and 
variable-speed dedicated-purpose pool pump establish specific criteria 
that any given dedicated-purpose pool pump must meet in order to be 
considered a two-speed, multi-speed, or variable-speed dedicated-
purpose pool 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 two-
speed, multi-speed, or variable-speed dedicated purpose pool pump 
discussed in section III.A.7, DOE proposes that such a pump would be 
tested using the single-speed pool filter pump test points, regardless 
of the number of operating speeds the pump may have.
    However, the DPPP Working Group recommended additional provisions 
for 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. That is, in order to use the two-speed pool 
filter pump test procedure, the DPPP Working Group recommended that 
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 are two-speed 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. 
(Docket No. EERE-2015-BT-STD-0008, No. 82, Recommendation #5B at p. 3). 
Effectively, this would require that only two-speed self-priming pool 
filter pumps (in the referenced size range) distributed in commerce 
with an automated, pre-programmable control or not distributed in 
commerce with such

[[Page 64611]]

a control but unable to operate without one can apply the two-speed 
test points described in the self-priming pool filter pump test 
procedure. In such a case, two-speed self-priming pool filter pumps (in 
the referenced size range) that are distributed in commerce with only a 
manual switch would still meet the proposed definition of a two-speed 
dedicated-purpose pool pump, but would not be eligible to be tested 
with the two-speed pool filter pump test points. Instead, such a pump 
would be tested as a single-speed pool filter pump.
    Consistent with the DPPP Working Group recommendations, DOE 
proposes to adopt the limitation on applicability of the two-speed test 
procedure to only those 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 are 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 capability but is unable to operate without the 
presence of such a pool pump control.
    DOE requests comment on the applicability of the two-speed, multi-
speed, and variable-speed pool filter pump test methods to only those 
pool filter pumps that meet the proposed definitions of two-speed, 
multi-speed, and variable-speed dedicated-purpose pool pump.
    DOE requests comment on additionally limiting the applicability of 
the two-speed test procedure to only those 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 are 
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 capability but is unable to 
operate without the presence of such a pool pump control.
    DOE requests comment on any additional criteria or requirements 
that may be necessary to ensure that the test procedure for two-speed, 
multi-speed, and variable-speed dedicated-purpose pool pumps is 
representative of their likely energy performance in the field.
2. Waterfall Pumps
    Another variety of dedicated-purpose pool pump covered by this 
proposed DPPP test procedure is waterfall pumps. Under the proposed 
definition in section III.A.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. DOE also understands waterfall 
pumps operate typically at a single speed. (Docket No. EERE-2015-BT-
STD-0008, Regal-Beloit America Inc, No. 53, at p. 118) Such pumps are 
specialty-purpose pool filter pumps that typically operate waterfalls 
or other water features in a pool. Because of these specific 
applications, the DPPP Working Group recommended unique test points for 
waterfall pumps that are representative of the typical applications of 
these pumps.
    Specifically, the DPPP Working Group recommended testing waterfall 
pumps at a fixed head of 17 feet and at the maximum operating speed of 
the pump. (Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendation #6 
at p. 5) The Working Group recommended this test point because, in its 
view, it represents typical waterfall operating characteristics, which 
are generally a high flow, low static head application (The range of 
head values currently available for waterfall pumps is between 10 feet 
and 25 feet--an average of 17.5 feet of head). The working group agreed 
that all current waterfall pump models can achieve this test point, and 
this test point would not restrict future product designs. (Docket No. 
EERE-2015-BT-STD-0008, No. 56 at p. 230-237) 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 #7 at p. 5)
    In this NOPR, DOE proposes to adopt the recommendations of the DPPP 
Working Group to test waterfall pumps at a single load point at maximum 
speed and a head of 17 feet and fully weight that single load point. 
However, DOE proposes to specify the load point more precisely, as 17.0 
feet, to indicate the requisite amount of precision with which the test 
point must be achieved. DOE believes that this is a reasonable and 
achievable level of precision given the repeatability of the test and 
the allowable tolerances specified in sectionIII.D.2.d.
    DOE requests comment on the proposed load point for waterfall pumps 
of 17.0 feet of head at the maximum speed of the pump and the proposed 
weight of 1.0 for the single load point.
3. Pressure Cleaner Booster Pumps
    In addition to self-priming and non-self priming pool filter pumps 
and waterfall pumps, the DPPP Working Group also recommended specifying 
a test procedure for pressure cleaner booster pumps (PCBPs). Pressure 
cleaner booster pumps, as defined in section III.A.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 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, Zodiac, 
No. 56 at p. 244) The DPPP Working Group developed the test point of 90 
feet of head at maximum speed because it sufficiently represents 
typical pressure cleaner booster pump operation, while being achievable 
by all currently available models of pressure cleaner booster pumps.
    However, at that time, the DPPP Working Group acknowledged that 
field conditions are extremely variable, and the operating conditions 
depend on the application of the pump. (Docket No. EERE-2015-BT-STD-
0008, Pentair, No. 56 at pp. 244 & Hayward Industries, No. 56 at pp. 
244-246) For example, Zodiac noted that the required pressure to 
operate a given pressure-side cleaner may vary from pool to pool based 
on differences in pool size and length, dimensions, and friction losses 
associated with the system piping. (Docket No. EERE-2015-BT-STD-0008, 
Zodiac, No. 56 at p. 244)
    As a result, 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 
PCBP technologies. Specifically, pressure-side cleaners typically 
require a relatively fixed flow rate to ensure proper cleaning, and the 
Working Group discussed how pressure cleaner booster pumps are 
currently designed conservatively to be able to provide the requisite 
flow rate in even the worst-case, highest head-loss plumbing systems 
and pools. With conventional single-speed pressure

[[Page 64612]]

cleaner booster pumps, orifice rings are typically installed to 
throttle the flow to the requisite flow rate at a higher head than may 
be necessary for the application. (Docket No. EERE-2015-BT-STD-0008, 
No. XX at p. YYY) However, the Working Group acknowledged that some 
plumbing systems may be able to effectively operate a pressure-side 
cleaner with significantly less head than typical, single-speed 
pressure cleaner booster pumps currently provide. For example, the CA 
IOUs presented data supporting the potential for variable-speed 
pressure cleaner booster pumps to reduce speed and provide the 
requisite flow rate and cleaner operating speed at lower head values. 
(Docket No. EERE-2015-BT-STD-0008, CA IOUs, No. 69) Therefore, to 
better capture the potential for variable performance of pressure 
cleaner booster pumps, including variable-speed pressure cleaner 
booster pumps, in the June 2016 DPPP Working Group recommendations, the 
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.\59\ (Docket No. EERE-2015-
BT-STD-0008, No. 82, Recommendation #8 at pp. 4-5) In such a case, 
single-speed pressure cleaner booster pumps would still be evaluated at 
a head value and flow rate similar to the previously specified 90 feet. 
However, any variable-speed, multi-speed, or even two-speed pressure 
cleaner booster pumps may operate at a lower speed and lower head 
value, while still providing the requisite 10 gpm.
---------------------------------------------------------------------------

    \59\ The actual verbiage in the June 2016 DPPP Working Group 
recommendations describes this load point in tabular format. The 
paragraph form presented here is identical in intent to the table 
presented in the June 2016 DPPP Working Group recommendations.
---------------------------------------------------------------------------

    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)
    DOE agrees with the June 2016 DPPP Working Group recommendations, 
and proposes to test pressure cleaner booster pumps at a single load 
point of 10 gpm at the minimum speed that results in a head value at or 
above 60 feet and to weight the measured performance of the pump at 
that load point with a weighting factor of 1.0. However, similar to 
waterfall pumps discussed in section III.C.1.e, DOE proposes to specify 
the load point more precisely, as a flow rate of 10.0 gpm and a head 
value at or above 60.0 feet, to indicate the requisite amount of 
precision with which the test point must be achieved. DOE believes that 
this level of precision is reasonable and achievable given the 
repeatability of the test and the allowable tolerances specified in 
section III.D.2.gIII.D.2.f.
    DOE requests comment on the proposed load point for pressure 
cleaner booster pumps of 10.0 gpm at the minimum speed that results in 
a head value at or above 60.0 feet and the proposed weight of 1.0 for 
the single load point.
    DOE requests comment and information regarding if this test point 
is achievable for all pressure cleaner booster pumps and, if not, how 
such pumps should be tested.
4. Summary
    In summary, DOE proposes unique load points for the different 
varieties and speed configurations of dedicated-purpose pool pumps, as 
recommended by the DPPP Working Group. DOE's proposed load points (i) 
and weights (wi) used in determining WEF for each pump 
variety are presented in Table III.12.

[[Page 64613]]

[GRAPHIC] [TIFF OMITTED] TP20SE16.010

D. 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 (section III.C) 
consistently and unambiguously. Specifically, to determine WEF for 
applicable dedicated-purpose pool pumps, the proposed 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.E.1). 
(Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendation #5 at p. 4)
    DOE notes that several industry standards currently exist that 
specify test methods applicable to dedicated-purpose pool pumps. DOE 
reviewed these industry test methods and provides a summary of this 
review in section III.D.1. Section III.D.1 also discusses the industry 
standard DOE proposes to incorporate by reference for measuring the 
performance of dedicated-purpose pool pumps.

[[Page 64614]]

However, DOE believes that several exceptions, modifications, and 
additions to this base test procedure are necessary to ensure accuracy 
and repeatability of test measurements (sections III.D.2.a through 
III.D.2.f). Finally, DOE proposes 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.D.2.g).
1. Incorporation by Reference of HI 40.6-2014
    When determining the appropriate test method for measuring the 
relevant performance parameters for dedicated-purpose pool pumps 
(namely, driver input power, flow rate, speed of rotation, and 
hydraulic output power), DOE reviewed the DPPP test procedures that are 
established or referenced by the existing regulatory and voluntary 
programs that are discussed in section III.B.1. The rating metrics and 
testing requirements for each of these programs are summarized in Table 
III.13.

    Table III.13--Summary of Rating Metrics and Industry Test Procedures Referenced by Various Voluntary and
                                            Regulatory DPPP Programs
----------------------------------------------------------------------------------------------------------------
                                                                                              Other relevant
           Rating program                    Metric                 Test procedure               standards
----------------------------------------------------------------------------------------------------------------
CEC 2014 Appliance Efficiency        Prescriptive design     IEEE Standard 114-2001 for   N/A.
 Regulations.                         requirements.           determination of motor
                                                              efficiency ANSI/HI 1.6-
                                                              2000 with additional
                                                              rating requirements and
                                                              calculations (equivalent
                                                              to ANSI/APSP/ICC-15a-2013)
                                                              for pump performance.
ENERGY STAR Program Requirements     EF....................  ANSI/HI 1.6-2000 with        ANSI/APSP-4-2007, ANSI/
 for Pool Pumps--Version 1.0.                                 additional rating            NSPI-5-2003, ANSI/
                                                              requirements and             NSPI-6-1999.
                                                              calculations (equivalent
                                                              to ANSI/APSP/ICC-15a-2013).
CEE High-Efficiency Swimming Pool    EF and prescriptive     ANSI/APSP/ICC-15a-2013.....  N/A.
 Initiative.                          design requirements
                                      for DPPP controls.
Australia and New Zealand Energy     EF....................  Part 1 of AS 5102-2009.....  N/A.
 Rating Program.
----------------------------------------------------------------------------------------------------------------

    As shown in Table III.13, the CEC 2014 Appliance Efficiency 
Regulations \60\ establish prescriptive design requirements for 
residential pool pumps, primarily focusing on the motor and controls 
with which the dedicated-purpose pool pump is sold. Cal. Code Regs., 
tit. 20 section 1605.3, subd. (g)(5). The CEC requires that reported 
motor efficiency is verifiable by IEEE Standard 114-2001, ``IEEE 
Standard Test Procedure for Single-Phase Induction Motors.'' \61\ The 
CEC also requires reporting of DPPP performance, as determined in 
accordance with the HI Standard 1.6 (ANSI/HI 1.6-2000), ``American 
National Standard for Centrifugal Pump Tests'' when certifying a 
dedicated-purpose pool pump under the Title 20 regulations. Cal. Code 
Regs., tit. 20 section 1606, subd. (a)(3). The test requirements for 
ENERGY STAR and CEE reference the ANSI/APSP/ICC-15a-2013, which is 
harmonized with the CEC testing methodology and also references HI 1.6-
2000 for measurement of relevant pump performance parameters. Id. The 
test requirements for the Australia and New Zealand energy rating 
programs, defined in part 1 of AS 5102-2009, ``Performance of household 
electrical appliances--Swimming pool pump--units: Energy consumption 
and energy performance,'' are similar to the CEC testing requirements, 
but includes a different test setup, different measurement 
requirements, and different load points. Id.
---------------------------------------------------------------------------

    \60\ California Energy Commission. 2014 Appliance Efficiency 
Regulations. 2014. www.energy.ca.gov/2014publications/CEC-400-2014-009/CEC-400-2014-009-CMF.pdf.
    \61\ Available for purchase at: http://standards.ieee.org/findstds/standard/114-2001.html.
---------------------------------------------------------------------------

    In the January 2016 general pumps TP NOPR, DOE incorporated by 
reference HI 40.6-2014 as the basis for the DOE test procedure for 
general pumps, with several exceptions, modifications, and 
additions.\62\ 81 FR 4086, 4109-4117 (Jan. 25, 2016). As noted in the 
DPPP Working Group negotiations, HI 40.6-2014 was developed as a more 
rigorous, standardized test method, based on the acceptance test 
procedure provided in ANSI/HI 14.6-2011, ``Methods for Rotodynamic Pump 
Efficiency Testing,'' which superseded HI 1.6-2000.\63\
---------------------------------------------------------------------------

    \62\ The specific exceptions and modifications adopted in the 
January 2016 general pump TP final rule and their applicability to 
the DPPP test procedure proposed herein are discussed in section 
III.D.2).
    \63\ For more information see: http://estore.pumps.org/Standards/Rotodynamic/EfficiencyTestsPDF.aspx.
---------------------------------------------------------------------------

    In the May 2015 DPPP RFI, DOE discussed the various test methods 
and requested comment on any DPPP test procedure that DOE should 
consider in developing a potential test procedure for dedicated-purpose 
pool pumps. 80 FR 26475, 26483 (May 8, 2015). In response, HI stated 
that HI 40.6-2014 was developed and vetted by manufacturers, energy 
advocates, and others. HI also stated that HI 40.6-2014 is applicable 
to dedicated-purpose pool pumps. (Docket No. EERE-2015-BT-STD-0008, No. 
8 at p. 4) HI did not believe that there are any other relevant test 
procedures that should be considered. In contrast, APSP responded that 
DOE should rely and reference ANSI/APSPICC-15-2013a. APSP elaborated on 
many aspects of ANSI/APSPICC-15-2013a, including that ANSI/APSPICC-15-
2013a references ANSI/HI 1.6-2000, for testing pool pumps. (Docket No. 
EERE-2015-BT-STD-0008, No. 10 at p. 2) The only other comments DOE 
received on this topic from the May 2015 DPPP RFI were from entities 
that later joined the DPPP Working Group (see Table I.2). As previously 
stated in the NOPR, the May 2015 DPPP RFI comments from DPPP Working 
Group members are not addressed in this document because their concerns 
were discussed during the DPPP Working Group meetings and are reflected 
in the December 2015 DPPP Working Group recommendations.
    In response to the comments from both APSP and HI, during the DPPP 
Working Group meetings, DOE reviewed ANSI/HI 1.6-2000, ANSI/HI 14.6-
2011, and HI 40.6-2014. As mentioned by HI in the comment to the May 
2015 DPPP RFI, HI 40.6-2014 was developed and vetted by manufacturers, 
energy advocates, and others--specifically building on ANSI/HI 14.6-
2011. Based on this review, as discussed in the DPPP Working Group 
meetings, DOE determined that HI 40.6-2014 was similar to HI 1.6-2000 
and HI 14.6-

[[Page 64615]]

2011, but improves on the previous test methods by incorporating more 
clear, unambiguous, specific, and repeatable language that would 
improve the accuracy and consistency of the test results. (Docket No. 
EERE-2015-BT-STD-0008, No. 58 at pp. 370-430) Specifically, HI 40.6-
2014 defines and explains how to calculate driver power input,\64\ 
volume per unit time,\65\ pump total head,\66\ pump power output,\67\ 
overall efficiency,\68\ and other relevant quantities at the specified 
load points necessary to determine the proposed metric, WEF, and 
contains appropriate specifications regarding the test setup, 
methodology, standard rating conditions, equipment specifications, 
uncertainty calculations, and tolerances.
---------------------------------------------------------------------------

    \64\ 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.
    \65\ 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.
    \66\ 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.
    \67\ 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 size of 
a dedicated-purpose pool pump, it refers to the rated hydraulic 
horsepower, as defined in section III.E.1.
    \68\ 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.
---------------------------------------------------------------------------

    Based on this analysis, the DPPP Working Group recommended that the 
DPPP test procedure be based on wire-to-water testing in accordance 
with HI 40.6-2014. (Docket No. EERE-2015-BT-STD-0008, No. 51, 
Recommendation #8 at p. 6) Consistent with the DPPP Working Group 
recommendations, DOE believes 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 
noted in section III.D.2. Accordingly, DOE proposes 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.D.2. DOE notes that HI 40.6-2014, with certain exceptions, is 
already incorporated by reference into subpart Y of 10 CFR part 431 and 
approved for Sec.  431.464, and appendix A to subpart Y of part 431. 10 
CFR 431.463. In this rule, DOE proposes to incorporate by reference HI 
40.6-2014, with certain different exceptions, into the proposed 
appendix B to subpart Y that would contain the DPPP test procedure.
    DOE requests comment on the proposal to incorporate by reference HI 
40.6-2014 into the proposed appendix B to subpart Y, with the 
exceptions, modifications, and additions listed in section III.D.2.
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 proposed 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 proposed 
modifications and clarifications to HI 40.6-2014 are addressed in the 
subsequent sections III.D.2.a through III.D.2.g.
a. Applicability and Clarification of Certain Sections of HI 40.6-2014
    Although DOE proposes to incorporate by reference HI 40.6-2014 as 
the basis for the DPPP test procedure, DOE notes that some sections of 
the standard are not applicable to the DPPP test procedure, while other 
sections require clarification regarding their applicability when 
conducting the DPPP test procedure. Table III.14 provides an overview 
of the sections of HI 40.62014 that DOE proposes to exclude from the 
DOE test procedure for dedicated-purpose pool pumps, as well as those 
that DOE proposes would only be optional and would not be required for 
determination of WEF.

         Table III.14--Sections of HI 40.6-2014 DOE Proposes To Exclude From Incorporation by Reference
----------------------------------------------------------------------------------------------------------------
               Section No.                         Title                      Proposed applicability
----------------------------------------------------------------------------------------------------------------
40.6.4.1................................  Vertically suspended    Excluded.
                                           pumps.
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       Excluded.
                                           during test.
40.6.6.1................................  Translation of test     Excluded.
                                           results to 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              Excluded.
                                           temperatures
                                           exceeding 30 [deg]C
                                           (86 [deg]F).
Appendix B..............................  Reporting of test       Excluded.
                                           results.
----------------------------------------------------------------------------------------------------------------

    DOE proposes not incorporating by reference section 40.6.4.1, 
``Vertically suspended pumps,'' and section 40.6.4.2, ``Submersible 
pumps,'' of HI 40.6-2014 in this DPPP TP NOPR because, as discussed in 
section III.A.1, dedicated-purpose pool pumps are end suction pumps and 
are not vertical turbine or submersible pumps. As such, the test 
provisions applicable to vertical turbine and submersible pumps 
described in section 40.6.4.1 and section 40.6.4.2 do not apply to the 
DPPP TP NOPR.
    Additionally, section 40.6.5.5.2, ``Speed of rotation during 
test,'' of HI 40.6-2014 requires that the speed of rotation to 
establish flow rate, pump total head, and power input be within the 
range of 80 percent and 120 percent of the rated speed. However, in 
this DPPP TP NOPR, rated or nominal speeds are not relevant, as DOE 
proposes testing at the maximum operating speed; low operating speed 
for two-speed pumps; and, for multi-speed and variable-speed pumps, any 
available speed that can meet the prescribed head and flow points (see 
section III.C.4). Similarly, section 40.6.6.1, ``Translation of test 
results to rated speed of rotation,'' describes the method by which 
tested data can be

[[Page 64616]]

translated to the rated speed of rotation for subsequent calculations 
and reporting purposes. As DOE proposes that all testing be conducted 
at the maximum speed of rotation, or at specific speeds that are 
determined by other characteristics (i.e., the available discrete 
operating speeds of the pump and/or the specified flow rate and 
reference curve), translation of tested results based on speed is not 
necessary. As a result, DOE proposes to not incorporate section 
40.6.5.5.2 and 40.6.6.1, and proposes different requirements regarding 
the operating speed at different test points, as summarized in Table 
III.12.
    HI 40.6-2014 also contains relevant requirements in section 
40.6.5.5, ``Test conditions,'' for the characteristics of the testing 
fluid to be used when testing pumps. Specifically, section 40.6.5.5 
requires that the ``tests shall be made with clear water at a maximum 
temperature of 10-30 [deg]C (50-86 [deg]F)'' and clarifies that ``clear 
water means water to be used for pump testing, with a maximum kinematic 
viscosity of 1.5 x 10-6 m\2\/s (1.6 x 10-5 ft\2\/s) and a 
maximum density of 1000 kgm3 (62.4 lb/ft\3\).'' DOE agrees with these 
requirements, as they will increase the repeatability and consistency 
of the test results, since significant variations in water density or 
viscosity can affect the tested pump performance. DOE proposes to 
include such requirements to test with clear water by incorporating by 
reference HI 40.6-2014, including section 4.6.5.5. However, in section 
A.7 of appendix A, ``Testing at temperatures exceeding 30 [deg]C (86 
[deg]F),'' HI 40.6-2014 addresses testing at temperatures above 30 
[deg]C (86 [deg]F). DOE does not intend to allow testing with liquids 
other than those meeting the definition of clear water presented 
previously, including water at elevated temperatures. Therefore, DOE 
proposes to exclude section A.7 from the incorporation by reference of 
HI 40.6-2014. DOE notes that, in the January 2016 general pumps TP 
final rule, DOE also did not incorporate section A.7 of appendix A of 
HI 40.6-2014. 81 FR 4086, 4110 (Jan. 25, 2016).
    Finally, DOE notes that section 40.6.5.3, ``Test report,'' provides 
requirements regarding the generation of a test report and appendix B, 
``Reporting of test results,'' provides guidance on test report 
formatting, both of which are not required for testing and rating 
dedicated-purpose pool pumps in accordance with DOE's procedure. In the 
January 2016 general pumps TP final rule, DOE also did not incorporate 
these sections for similar reasons. 81 FR 4086, 4110 (Jan. 25, 2016).
    For the reasons stated previously, DOE proposes to not incorporate 
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.
    DOE requests comment on its proposal to not incorporate by 
reference sections 40.6.4.1, 40.6.4.2, 40.6.5.3, 40.6.5.5.2, 40.6.6.1, 
A.7, and Appendix B of HI 40.6-2014 as part of the DOE test procedure 
for dedicated-purpose pool pumps.
    In addition to the excluded sections of HI 40.6-2014 referenced 
previously, DOE also notes that certain sections of HI 40.6-2014 are 
not necessary to determine WEF for applicable dedicated-purpose pool 
pumps, but DOE opts to include them in the proposed DPPP test procedure 
for the purposes of any other optional representations DPPP 
manufacturers may wish to make regarding DPPP performance. 
Specifically, only the following measurements are required to calculate 
WEF for any given dedicated-purpose pool pump:
     Pump power output (hydraulic horsepower) at maximum speed 
of rotation on the reference curve (i.e., rated hydraulic horsepower);
     driver power input (input power to the motor, or controls 
if available) at all load points i, specified uniquely for each DPPP 
variety and speed configuration (see section III.C);
     volume rate of flow (flow rate) at all load points i, 
specified uniquely for each DPPP variety and speed configuration (see 
section III.C);
     speed of rotation at each load point i, specified uniquely 
for each DPPP variety and speed configuration (see section III.C).
    HI 40.6-2014 also contains methods that describe how to determine 
the BEP of the pump, pump efficiency, and overall efficiency. In 
addition, HI 40.6-2014 section 40.6.6.3, ``Performance curve,'' 
describes how to specify head versus flow rate, power versus flow rate, 
and efficiency versus flow rate performance curves. Although 
determination of these pump performance metrics and curves is not 
required to calculate WEF, DOE acknowledges that DPPP manufacturers may 
wish to make representations regarding the performance of their 
dedicated-purpose pool pumps based on these metrics, in addition to the 
proposed WEF metric. Therefore, DOE proposes to incorporate by 
reference certain portions of HI 40.6-2014 (i.e., sections 40.6.5.5.1, 
``Test procedure''; section 40.6.6.2, ``Pump efficiency''; and section 
40.6.6.3, ``Performance curve) even though they are not directly 
applicable to the manner in which DOE proposes to test dedicated-
purpose pool pumps to determine WEF. In the proposed regulatory text of 
the DPPP test procedure, DOE would refer specifically only to those 
sections that are applicable for the determination of WEF and note that 
determination of pump efficiency, overall efficiency, BEP, and pump 
performance curves is not required. With regard to section 40.6.5.5.1 
of HI 40.6-2014, DOE notes that the specifications regarding warm-up 
time and collecting data at steady-state conditions are applicable to 
the determination of WEF. However, section 40.6.5.5.1, of HI 40.6-2014 
also requires measurement of pump performance at test points 
corresponding to 40, 60, 75, 90, 100, 110, and 120 percent of the flow 
rate at the expected BEP of the pump. DOE proposes different load 
points for the varieties and speed configurations of dedicated-purpose 
pool pumps to which the test procedure is applicable, which are 
presented in detail in section III.C. Therefore, in the DPPP test 
procedure, DOE proposes to clarify that measurements at the load points 
described in section 40.6.5.5.1 are not required and that, instead, 
relevant parameters must be determined at the specific load points 
proposed in section III.C for each DPPP variety and speed 
configuration. However, manufacturers could elect to also record data 
at the test points described in section 40.6.5.5.1 in order to 
determine BEP or make representations regarding pump performance over 
the operating range of the equipment.
    To allow manufacturers to make voluntary representations of other 
metrics, in addition to WEF, DOE proposes to clarify that section 
40.6.5.5.1, section 40.6.6.2, and section 40.6.6.3, of HI 40.6-2014 are 
not required for determination of WEF, but may be optionally conducted 
to determine and make representations about other DPPP performance 
parameters.
    DOE requests comment on the proposal to clarify the applicability 
of sections 40.6.5.5.1, section 40.6.6.2, and section 40.6.6.3, of HI 
40.6-2014.
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. Specifically, in the January 2016 general pump 
TP final rule, DOE clarified that hydraulic horsepower must be

[[Page 64617]]

calculated with a unit conversion factor of 3,956, instead of 3,960, 
which is specified in HI 40.6-2014. 81 FR 4086, 4109 (Jan. 25, 2016). 
DOE notes that the value of 3,956 more accurately represents the unit 
conversion from the product of flow (Q) in gpm, head (H) in feet, and 
specific gravity (which is dimensionless) to horsepower, when assuming 
a specific gravity of 1.0. In section 40.6.6.2, HI 40.6-2014 specifies 
a value of 3,960 in regards to calculating pump efficiency, but HI 
40.6-2014 does not specify a specific unit conversion factor for the 
purposes of calculating pump hydraulic output power. Instead, HI 40.6-
2014 provides the following equation (5) for determining pump power 
output:

Pu = [rho] x Q x H x g (5)

Where:

Pu = the measured hydraulic output power of the tested 
pump,\69\
---------------------------------------------------------------------------

    \69\ For each of the quantities listed, HI 40.6-2014 provides 
multiple metric and U.S. customary units. Appendix E also provides 
unit conversions.
---------------------------------------------------------------------------

[rho] = density,
Q = the volume rate of flow,
H = pump total head, and
g = acceleration due to gravity.

    \As shown in equation (5), the unit conversion factor can be 
derived from the product of density and acceleration due to gravity. An 
analysis was performed in support of the January 2016 general pumps TP 
final rule to convert from the metric units for density and 
acceleration due to gravity specified in HI 40.6-2014 to the 
appropriate units. This analysis found the value of 3,956 to be more 
accurate and have a greater amount of precision than the 3,960 value 
specified in HI 40.6-2014 for properties and conditions of the clear 
water used for testing. Therefore, to ensure consistent calculations 
and results in the DOE test procedure for dedicated-purpose pool pumps, 
and consistent with the January 2016 general pumps TP final rule, DOE 
proposes a unit conversion factor of 3,956 instead of the 3,960 value 
specified in HI 40.6-2014 and proposes to clarify that the 3,960 
calculation in section 40.6.6.2 of HI 40.6-2014 should not be used. 
Also, DOE notes that the value of 3,956 is the value used by the DPPP 
Working Group and was shown in presentation material at the working 
group meetings. (Docket No., EERE-2015-BT-STD-0008, No. 42 at p. 17)
    DOE requests comment on its proposal to clarify the calculation of 
pump hydraulic horsepower to reference a unit conversion of 3,956 
instead of 3,960.
c. Data Collection and Determination of Stabilization
    In order to ensure the repeatability of test data and results, the 
DPPP test procedure must provide instructions regarding how to sample 
and collect data at each load point. Such instructions 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.
    Section 40.6.5.5.1 of HI 40.6-2014 provides that all measurements 
shall be made under steady state conditions. The requirements for 
determining when the pump is operating under steady state conditions in 
HI 40.6-2014 are 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. While HI 40.6-2014 does not specify the measurement 
interval for determination of steady state operation, DOE understands 
that a minimum of two stabilization measurements are required to 
calculate an average. To provide greater specificity regarding data 
collection in the context of determination of stabilization, in the 
January 2016 general pump TP final rule, DOE adopted requirements that 
at least two unique measurements must be used to determine 
stabilization. 81 FR 4086, 4011 (Jan. 25, 2016). DOE notes that the 
ENERGY STAR Program currently requires measurement equipment to record 
data at a rate ``greater than or equal to one reading per second'' and 
requires sampling data to be accumulated for at least one minute and 
the average (arithmetic mean) value to be recorded.\70\ DOE believes 
the requirements for general pumps adopted in the January 2016 general 
pumps TP final rule accommodate a longer period between the sampling of 
individual data points and, therefore, any measurement procedures 
currently in place for ENERGY STAR testing would also meet the data 
collection and stabilization requirements adopted in the January 2016 
general pumps TP final rule. 81 FR 4086, 4011 (Jan. 25, 2016). As a 
result, DOE believes the data collection requirements specified in the 
January 2016 general pumps TP final rule are sufficient to collect 
accurate and repeatable measurements, but also accommodate more 
frequent data collection if test labs are able to accommodate such. 
Therefore, DOE proposes to adopt requirements that at least two unique 
measurements must be used to determine stabilization when testing pumps 
according to the DPPP test procedure.
---------------------------------------------------------------------------

    \70\ ENERGY STAR Program Requirements Product Specification for 
Pool Pumps, Final Test Method. Rev. Jan-2013, section 6.2.A.3, p 4. 
https://www.energystar.gov/sites/default/files/specs/Pool%20Pump%20Final%20Test%20Method%2001-15-2013.pdf.
---------------------------------------------------------------------------

    Section 40.6.3.2.2 of HI 40.6-2014, ``Permissible fluctuations,'' 
also provides 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. To ensure that each 
stabilization data point is reflective of a separate measurement, in 
the January 2016 general pumps TP final rule, DOE adopted requirements 
that damping devices are only permitted to integrate up to the 
measurement interval. 81 FR 4086, 4011 (Jan. 25, 2016). Similarly, in 
this DPPP TP NOPR, DOE proposes to specify 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. DOE also proposes 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, 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.
    DOE requests comment on the proposal to specify that at least two 
unique data points must be used to determine stabilization and to allow 
damping devices, as described in section 40.6.3.2.2, but with 
integration limited to less than or equal to the data collection 
interval.
d. Test Tolerances
    As discussed in section III.D.2.a and III.C, DOE proposes to 
specify unique load points for each DPPP variety and speed 
configuration. DOE notes that HI 40.6-2014 does not provide explicit 
tolerances around each specified load point. That is, 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. For example, the DPPP

[[Page 64618]]

test procedure proposes to require testing at a low flow point of 24.7 
gpm at or above curve C for multi-speed and variable-speed pool filter 
pumps. Due to experimental variability and test uncertainty, it is 
possible that the recorded data point may be slightly above or below 
24.7 gpm. To ensure repeatability and consistency of test results, the 
DOE DPPP test procedure must specify how close each measured data point 
must be to the specified load point and if any correction should occur.
    To develop the proposal regarding tolerances on the measured flow 
and head parameters for each load point, DOE referred to the 
requirements of other existing DPPP test procedures and programs, such 
as ENERGY STAR and NSF/ANSI 50-2015. Specifically, DOE identified that 
the ENERGY STAR program maintains a tolerance on the flow rate used to 
test pool pumps of 2.5 percent but does not require a 
tolerance of the head measured at each load point for the respective 
system curve under consideration.\71\ Additionally, NSF 50-2015, in 
section C.1.5 of Annex C of NSF 50-2015 requires that each tested pump 
at each measured load point must have:
---------------------------------------------------------------------------

    \71\ ENERGY STAR Program Requirements Product Specification for 
Pool Pumps, Final Test Method. Rev. Jan-2013, section 6.2.A.2, p 4. 
https://www.energystar.gov/sites/default/files/specs/Pool%20Pump%20Final%20Test%20Method%2001-15-2013.pdf.
---------------------------------------------------------------------------

     A tested total dynamic head that is between -3 percent and 
+5 percent of the total dynamic head specified by the manufacturer's 
performance curve and
     a tested flow rate that is 5 percent of the 
flow specified by the manufacturers performance curve.\72\
---------------------------------------------------------------------------

    \72\ NSF/ANSI 50-2015 Equipment for Swimming Pools, Spas, Hot 
Tubs and Other Recreational Water Facilities, 2015 NSF 
International, Ann Arbor Michigan.
---------------------------------------------------------------------------

    The pump performance curves used by manufacturers to describe the 
operation of DPPP equipment are often compilations of multiple data 
sets and are intended to represent the average operation of that 
specific model of pump. DOE understands that the NSF/ANSI 50-2015 
limits are intended to capture both manufacturing variability, as well 
as experimental variability, and thus represent a worst case tolerance 
on flow and head that should be attainable by any given unit within a 
given DPPP model.
    Conversely, DOE's tolerances on flow and head at each load point 
are meant to represent how closely any given pump being tested can 
achieve a specified load point, which is subject to experimental 
uncertainty but not manufacturing variability among specific units. 
Similarly, the ENERGY STAR tolerances apply to a specific tested pump 
and account for experimental variability only. As a result, DOE 
believes it is more appropriate to reference tolerances similar to 
those referenced in ENERGY STAR for the load points specified in the 
DPPP test procedure, or 2.5 percent of the specified load 
point.
    However, DOE notes that the load points are specified, primarily, 
in terms of flow and speed for self-priming pool filter pumps, non-
self-priming pool filter pumps, and pressure cleaner booster pumps 
(head is the dependent variable), while waterfall pumps have a load 
point that is primarily specified in terms of head and speed (flow is 
the dependent variable). That is, for self-priming pool filter pumps, 
non-self-priming pool filter pumps, and pressure cleaner booster pumps, 
the achievable value of pump total head or head point at each flow rate 
is dependent on the specific operating speed and speed configuration of 
each dedicated-purpose pool pump. For example, the high flow point for 
multi-speed and variable-speed pool filter pumps is specified as 80 
percent of the flow rate at the maximum speed at or above the reference 
curve (i.e., curve C for pool filter pump with hydraulic horsepower 
less than 2.5 hp). Different DPPP models will have different tested 
head points depending on if the pump can continuously reduce speed to 
achieve exactly the flow and head points on the reference curve, or if 
the dedicated-purpose pool pump only has a few discrete speeds and must 
be tested at 80 percent of the flow rate load point at maximum speed in 
order to achieve a load point that is both at 80 percent of the flow at 
maximum speed on the reference curve and at or above the reference 
curve head points. In such a case, the head value would be above the 
reference curve.
    As a result, DOE proposes to specify, for self-priming and non-
self-priming pool filter pumps, that the tested flow rate must be 
within 2.5 percent of the specified flow rate, which is the 
flow rate on the reference curve at the specified speed or 24.7 or 31.1 
gpm for multi-speed and variable-speed pool filter pumps. For self-
priming and non-self-priming pool filter pumps, a range of head points 
would be acceptable, based on the performance of any given DPPP model. 
Similarly, for pressure cleaner booster pumps, DOE proposes a test 
point corresponding to a flow rate of 10.0 gpm at a head at or above 
60.0 feet. As the flow rate is fixed, but the head value may vary, DOE 
also proposes that the tested flow rate must be within 2.5 
percent of the specified flow rate for pressure cleaner booster pumps. 
For waterfall pumps, DOE proposes to specify that the tested head point 
must be within 2.5 percent of the specified head value 
(i.e., 17.0  0.425 feet) at maximum speed, while the flow 
rate may vary based on the performance of the particular DPPP unit 
under test. DOE also does not propose a tolerance on the tested speed, 
as the tested maximum speeds are specific to each dedicated-purpose 
pool pump being tested.
    DOE requests comment on its proposal to require that the tested 
flow rate at each load point must be within 2.5 percent of 
the flow rate at the specified load point self-priming pool filter 
pumps, non-self-priming pool filter pumps, and pressure cleaner booster 
pumps.
    DOE requests comment on its proposal to require that the tested 
head point at each load point must be within 2.5 percent of 
the head point at the specified load point for waterfall pumps.
e. Power Supply Characteristics
    Because input power to the dedicated-purpose pool pump, measured at 
the motor or control, as applicable, is a component of the proposed 
metric, the measurement of input power to the driver is an important 
element of the test. As discussed at length in the January 2016 general 
pumps TP final rule, the characteristics of the power supplied to the 
dedicated-purpose pool pump affect the accuracy and repeatability of 
the measured power draw to the motor or control of the DPPP model being 
tested. 81 FR 4086, 4112-4115 (Jan. 25, 2016). Consistent with the 
requirements in the January 2016 general pumps TP final rule, to ensure 
accurate and repeatable measurements of DPPP input power to the motor 
or control, DOE proposes to specify nominal values for voltage, 
frequency, voltage unbalance, and total harmonic distortion; as well as 
tolerances for each of these quantities that must be maintained at the 
input terminals to the motor and/or control as applicable.
    To determine the appropriate power supply characteristics for 
testing dedicated-purpose pool pumps, DOE examined applicable test 
methods for similar equipment (i.e., equipment typically driven by 
electric motors and sometimes accompanied with variable frequency 
drives). In the January 2016 general pumps TP final rule, DOE provided 
a summary of tolerances referenced in other relevant industry

[[Page 64619]]

standards \73\ and performed a detailed analysis surrounding the impact 
of differences in each power supply characteristic (i.e., voltage 
unbalance, voltage tolerance, frequency tolerance, voltage waveform 
distortion, and source impendence) on the test measurements and 
resultant metric. DOE found that large differences in voltage 
unbalance, voltage tolerance, frequency tolerance, or voltage waveform 
distortion can impact the performance of the motor or control 
(especially variable frequency drive) with which the pump may be sold. 
To ensure that such power supply characteristics were reasonable, DOE 
also analyzed the typical power characteristics available on the U.S. 
power grid and the feasibility of achieving the specified requirements 
with or without power conditioning equipment. Id.
---------------------------------------------------------------------------

    \73\ In the January 2016 general pumps TP final rule, DOE 
determined that the 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) are the most relevant 
test methods for measuring input power to electric motors, as they 
are the test methods incorporated by reference as the DOE test 
procedure for electric motors. Other widely referenced industry 
standard test methods for motors include: IEC 60034-1 Edition 12.0 
2010-02, ``Rotating electrical machines--Part 1: Rating and 
performance'' (IEC 60034-1:2010) and NEMA MG 1-2014, ``Motors and 
Generators'' (NEMA MG 1-2014). DOE also identified both AHRI 1210-
2011, ``2011 Standard for Performance Rating of Variable Frequency 
Drives,'' (AHRI 1210-2011) and the 2013 version of CSA Standard 
C838, ``Energy efficiency test methods for three-phase variable 
frequency drive systems,'' (CSA C838-13) as applicable methods for 
measuring the performance of VSD control systems. 81 FR 4086, 4112-
15 (Jan. 25, 2016).
---------------------------------------------------------------------------

    Based on this analysis, DOE adopted the power supply requirements 
summarized in Table III.15 when testing of the input power to the motor 
or control,\74\ which DOE is also proposing to adopt for the DPPP test 
procedure. 81 FR 4086, 4152 (Jan. 25, 2016).
---------------------------------------------------------------------------

    \74\ Under the pump test procedure adopted in the January 2016 
general pumps TP final rule, pumps sold with motors rated using the 
testing-based method, pumps sold with motors and continuous or non-
continuous controls rated using the testing-based method, and any 
pumps rated using the calculation-based method when the bare pump 
are evaluated using a calibrated motor to determine pump shaft input 
power. 81 FR 4086, 4115 (Jan. 25, 2016).

 Table III.15--Proposed Power Supply Requirements for Dedicated-Purpose
                               Pool Pumps
------------------------------------------------------------------------
            Characteristic                          Tolerance
------------------------------------------------------------------------
Voltage...............................  5% of the rated
                                         value of the motor.
Frequency.............................  1% of the rated
                                         value of the motor.
Voltage Unbalance.....................  3% of the rated
                                         value of the motor.
Total harmonic Distortion.............  <=12% throughout the test.
------------------------------------------------------------------------

    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. DOE notes that, under the proposed DPPP test 
procedure and in accordance with the DPPP Working Group specifications, 
all dedicated-purpose pool pumps would require measurement of input 
power to the pump at the motor or controls, as applicable (see section 
III.D.1). (Docket No. EERE-2015-BT-STD-0008, No. 51, Recommendation #8 
at p. 6) Therefore, in this DPPP test procedure, DOE proposes 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.
    DOE requests comments on the proposed voltage, frequency, voltage 
unbalance, and total harmonic distortion requirements that would have 
to be satisfied when performing the DPPP test procedure for dedicated-
purpose pool pumps.
    Specifically, DOE requests comments on whether these tolerances can 
be achieved in existing DPPP test laboratories, or whether specialized 
power supplies or power conditioning equipment would be required.
f. Measurement Equipment for Testing
    In the January 2016 general pumps TP final rule, DOE incorporated 
appendix C of HI 40.6-2014, which specifies the required 
instrumentation to measure head, speed, flow rate, torque, temperature, 
and electrical input power to the motor. However, DOE noted, in that 
rule, that, for the purposes of measuring input power to the driver for 
pumps sold with a motor and continuous or non-continuous controls rated 
using the testing-based method, 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, consistent with other relevant industry 
standards \75\ for measurement of input power to motor and drive 
systems, DOE adopted requirements that electrical measurements for 
determining pump 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 \76\ and have an 
accuracy level of 2.0 percent of full scale when measured 
at the fundamental supply source frequency when rating pumps using the 
testing-based methods or with a calibrated motor. 81 FR 4086, 4118-19 
(Jan. 25, 2016).
---------------------------------------------------------------------------

    \75\ 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''; Canadian 
Standards Association (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.
    \76\ 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.
---------------------------------------------------------------------------

    DOE proposes to refer to appendix C of HI 40.6-2014, as 
incorporated by reference (see section III.D.1), to specify the 
required instrumentation to measure head, speed, flow rate, and 
temperature in the DPPP test procedure. In addition, as all dedicated-
purpose pool pumps would require measurement of the input power to the 
motor or control, as applicable, DOE proposes to specify that, for the 
purposes of measuring input power to the motor or control, as 
applicable, of DPPP models, electrical measurement equipment must be 
used that is capable of measuring current, voltage, and real power up 
to at least the 40th harmonic of fundamental supply source frequency 
\77\ and having an accuracy level of 2.0 percent of full 
scale when measured at the fundamental supply source frequency.
---------------------------------------------------------------------------

    \77\ 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.
---------------------------------------------------------------------------

    DOE requests comment on its proposal to require measurement of the

[[Page 64620]]

input power to the dedicated-purpose pool pump using electrical 
measurement equipment 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 
full scale when measured at the fundamental supply source frequency.
    DOE also notes that HI 40.6-2014 does not contain any requirements 
or description of the instruments required for measuring distance. 
However, measurements of distance, for example height above the 
reference plane, are required when conducting the proposed test 
procedure, for example when determining the self-priming capability of 
self-priming and non-self-priming pool filter pumps (see section 
III.I.3). As such, DOE proposes to require instruments for measuring 
distance that are accurate to and have a resolution of at least 0.1 inch. DOE believes this will improve the consistency and 
repeatability of test results and ensure all results are, in fact, 
indicative of the measured performance. DOE notes that, while this 
accuracy requirement is generally applicable, it is a maximum 
tolerance. To the extent that measurement of height or distance is 
necessary for determining measured head values, the accuracy of any 
distance-measuring instruments is included in the overall accuracy 
requirement for ``differential head,'' ``suction head,'' and/or 
``discharge head'' presented in table 40.6.3.2.3 of HI 40.6-2014, 
``Maximum permissible measurement device uncertainty.'' This is 
consistent with the treatment of all other variables, where 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. 
Therefore, when used in combination with other instruments to measure 
head, distance-measuring instruments may need to meet higher or lower 
accuracy requirements to conform to the specified accuracies for 
measurement of differential, suction, and discharge head.
    DOE requests comment on the proposal to require 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 number of significant digits. 
Therefore, to improve the accuracy and consistency of calculations, DOE 
proposes that raw measured data be used to calculate WEF and the 
resultant value be rounded to the nearest 0.1.
    DOE requests comment on the proposal to use raw measured data to 
calculate WEF as well as the proposal to round WEF to the nearest 0.1 
kgal/kWh.

E. 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 ``size'' 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.C, DOE proposes to establish different load points and 
reference curves based on the rated hydraulic horsepower of a given 
pool filter pump. DOE's proposal for a standardized and consistent 
method to determine DPPP size is discussed in section III.E.1. As 
discussed in section III.A.3.b, DOE also proposes to differentiate 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.E.2.
1. Determination of DPPP Size
    Industry currently uses several terms to characterize the size 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. The terms, as they are defined in the 
industry standard ANSI/APSP/ICC-15a-2013, their definitions, and any 
synonyms contained in other relevant industry standards are summarized 
in Table III.16.

 Table III.16--Summary of Terms in Typical DPPP Industry Standards Used
                        To Describe Pump ``Size''
------------------------------------------------------------------------
           Defined term                 Definition           Synonyms
------------------------------------------------------------------------
Brake horsepower.................  A term historically   HI 40.6-2014
                                    used in the pool,     defines this
                                    spa, and whirlpool    term as pump
                                    bath industries. A    power
                                    term that conflicts   input.\b\ Also
                                    with total            known as pump
                                    horsepower and        shaft
                                    service factor        horsepower.
                                    horsepower \a\.
Capacity of the motor............  The total horsepower  Total
                                    or product of the     horsepower,
                                    rated horsepower      DPPP motor
                                    and the service       capacity,
                                    factor of a motor     service factor
                                    used on a dedicated-  horsepower. HI
                                    purpose pool pump     40.6-2014
                                    (also known as        defines this
                                    service factor        term as driver
                                    horsepower) based     power
                                    on the maximum        input.\b\
                                    continuous duty
                                    motor power output
                                    rating allowable
                                    for the nameplate
                                    ambient rating and
                                    motor insulation
                                    class. Total
                                    horsepower = rated
                                    horsepower x
                                    service factor \a\.
Full-rated.......................  A term used to        N/A.
                                    describe DPPP
                                    motors with a
                                    service factor
                                    greater than 1.25
                                    typically. The term
                                    is generally used
                                    for marketing
                                    purposes \a\.
Max-rated........................  A term used to        Up-rated.
                                    describe DPPP
                                    motors with a
                                    service factor of
                                    between 1.0 and
                                    1.25 typically. The
                                    term is generally
                                    used for marketing
                                    purposes \a\.
Nameplate horsepower.............  The motor horsepower  Rated
                                    listed on the pump    horsepower.
                                    and the horsepower
                                    by which a pump is
                                    typically sold.\a\
                                    The horsepower
                                    displayed on the
                                    nameplate mounted
                                    on the motor \c\.
Peak horsepower..................  A term historically   N/A.
                                    used in the pool,
                                    spa, and whirlpool
                                    bath industries. A
                                    term that conflicts
                                    with total
                                    horsepower and
                                    service factor
                                    horsepower \a\.
DPPP motor capacity..............  See Total             Total
                                    horsepower.\a\ A      horsepower,
                                    value equal to the    capacity of
                                    product of motor's    the motor,
                                    nameplate HP and      service factor
                                    service factor \c\.   horsepower. HI
                                                          40.6-2014
                                                          defines this
                                                          term as driver
                                                          power
                                                          input.\b\

[[Page 64621]]

 
Rated horsepower.................  The motor power       Nameplate
                                    output designed by    horsepower.
                                    the manufacturer
                                    for a rated rpm,
                                    voltage, and
                                    frequency. May be
                                    less than total
                                    horsepower where
                                    service factor is
                                    >1.0, or equal to
                                    total horsepower
                                    where the service
                                    factor is =
                                    1.0.\a,d\ Also
                                    known as nameplate
                                    horsepower \d\.
Service factor \e\...............  A multiplier applied  N/A.
                                    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,
                                    provided that other
                                    design parameters,
                                    such as rated
                                    voltage, frequency,
                                    and ambient
                                    temperature, are
                                    within limits \a,
                                    c, d, f\.
Service factor horsepower........  The maximum           Total
                                    continuous duty       horsepower,
                                    motor power output    DPPP motor
                                    rating allowable      capacity,
                                    for nameplate         capacity of
                                    ambient rating and    the motor. HI
                                    motor insulation      40.6-2014
                                    class. Service        defines this
                                    factor horsepower     term as driver
                                    (also known as        power
                                    total horsepower) =   input.\b\
                                    rated horsepower x
                                    service factor.\a\
Special horsepower...............  A term historically   N/A.
                                    used in the pool,
                                    spa, and whirlpool
                                    bath industries,
                                    which may conflict
                                    with rated
                                    horsepower and
                                    service factor
                                    horsepower.\a\
Total horsepower d,g.............  The product of the    HI 40.6-2014
                                    rated horsepower      defines this
                                    and the service       term as driver
                                    factor of a motor     power
                                    used on a dedicated-  input.\b\
                                    purpose pool pump
                                    (also known as
                                    service factor
                                    horsepower) based
                                    on the maximum
                                    continuous duty
                                    motor power output
                                    rating allowable
                                    for nameplate
                                    ambient rating and
                                    motor insulation
                                    class. Total
                                    horsepower = rated
                                    horsepower x
                                    service
                                    factor.\a,c,d\
Up-rated.........................  A term typically      Max-rated.
                                    used to describe
                                    DPPP motors with a
                                    service factor of
                                    between 1.0 and
                                    1.25. The term is
                                    generally used for
                                    marketing
                                    purposes.\a\
Hydraulic horsepower.............  The mechanical power  HI 40.6-2014
                                    transferred to the    defines this
                                    liquid as it passes   term as pump
                                    through the pump.     power
                                    Also known as pump    output.\b\
                                    hydraulic power.\b\
------------------------------------------------------------------------
\a\ ANSI/APSP/ICC-15a-2013, section 3, ``Definitions.''
\b\ HI 40.6-2014, Table 40.6.2.1, ``List of quantities, terms, and
  definitions.''
\c\ Cal. Code Regs., tit. 20 section 1602, subd. (g).
\d\ ENERGY STAR Program Requirements for Pool Pumps-Eligibility Criteria
  (Version 1.1), section 1.4, ``Product Ratings.''
\e\ Service factor is not an explicit description of pump ``size'' but
  is used is defining related terms (e.g., service factor horsepower and
  total horsepower).
\f\ CA Title 20 defines this term as ``service factor (of an AC motor)
  means a multiplier which, when applied to the rated horsepower,
  indicated a permissible horsepower loading which can be carried under
  the conditions specified for the horsepower.''
\g\ Defined as ``total horsepower (of an AC motor)'' in CA Title 20.

    DOE recognizes that the DPPP industry terminology related to pump 
size is confusing, as there are several commonly referenced and similar 
terms. The DPPP Working Group discussed these terms, and ultimately 
recommended standardizing the terminology referring to pump size 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) Using 
hydraulic horsepower to standardize the description of ``pump 
horsepower'' has several benefits as compared to other horsepower 
terms. First, it is a quantity that is directly measurable. In 
addition, the variables necessary to determine hydraulic horsepower are 
already measured in the industry standard DOE proposes to incorporate 
by reference as the basis for the DPPP test procedure (see section 
III.D.1). Further, the hydraulic horsepower provides consistent and 
comparable criteria to compare pumps that provide the same output flow 
rate and total dynamic head (i.e., serving the same load).
    Horsepower ratings describing the input power to the motor are 
variable, based on the efficiency of the pump and motor for pumps 
serving the same load. As a result, in this DPPP TP NOPR, DOE proposes 
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 proposed DPPP test procedure. 
Hydraulic horsepower (termed pump power output)\78\ is defined in HI 
40.6-2014, which DOE proposes to incorporate by reference (see section 
III.D.1). HI 40.6-2014 also contains a test method for determining pump 
power output, as described in more detail in sections III.D.2.b.
---------------------------------------------------------------------------

    \78\ 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 size of 
a dedicated-purpose pool pump, it refers to the rated hydraulic 
horsepower.
---------------------------------------------------------------------------

    In order to have consistent and comparable values of hydraulic 
horsepower, DOE notes that the DPPP test procedure must also specify a 
specific load point at which to determine the hydraulic horsepower. DOE 
proposes 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.C) and at 
full impeller diameter. DOE notes that this is consistent with the load 
points for single-speed pool filter pumps, waterfall pumps, and 
pressure cleaner booster pumps, as well as consistent with the high 
flow load point for two-speed pool filter pumps. The hydraulic 
horsepower at the maximum speed on the reference curve is slightly 
greater than the hydraulic horsepower associated with the high flow 
load point for multi-speed and variable-speed pool filter pumps, as the 
high flow point for those pumps is specified as 80 percent of the flow 
at maximum speed. However, DOE believes that measuring and reporting 
hydraulic horsepower at the maximum speed and full impeller diameter on 
the specified reference curve or head value for each DPPP variety would 
result in the most consistent and comparable ratings among DPPP 
varieties and speed configurations.

[[Page 64622]]

    To unambiguously specify the pump power characteristic that DOE 
proposes to use to describe the size of dedicated-purpose pool pumps, 
DOE proposes to introduce a new term, the ``rated hydraulic 
horsepower,'' that is identified as 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. In addition, DOE proposes that the representative value for 
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 proposed DPPP test 
procedure.
    While the DPPP test procedure and standards recommended by the DPPP 
Working Group are fundamentally based on the rated hydraulic 
horsepower, as proposed in this section III.E.1 of this NOPR, the DPPP 
Working Group also 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 
recommendations suggest 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).
    DPPP motors often are rated with total horsepower (or service 
factor horsepower). As shown in Table III.16, ENERGY STAR, CA Title 20, 
and ANSI/APSP/ICC-15a-2013 all describe similar terms to ``total 
horsepower'' \79\ as the product of the rated horsepower and the 
service factor of a motor used on a dedicated-purpose pool pump based 
on the maximum continuous duty motor power output rating allowable for 
nameplate ambient rating and motor insulation class (i.e., total 
horsepower = rated horsepower x service factor). The rated horsepower, 
or nameplate horsepower, is similarly defined as the motor power output 
designed by the manufacturer for a rated speed of rotation, voltage, 
and frequency.
---------------------------------------------------------------------------

    \79\ ANSI/APSP/ICC-15a-2013 defines this term as service factor 
horsepower. CA Title 20 defines this as ``total horsepower (of an AC 
motor).''
---------------------------------------------------------------------------

    However, some of the industry definitions lack the requisite 
specificity to describe such terms for the purposes of rating and 
labeling dedicated-purpose pool pumps in an unambiguous, standardized, 
and consistent manner. For example, the DPPP Working Group discussed 
how service factors can vary significantly from model to model and are 
currently assigned arbitrarily at the discretion of the manufacturer. 
(Docket No. EERE-2015-BT-STD-0008, No. 56 at pp. 121-138).
    To alleviate any ambiguity associated with rated horsepower, total 
horsepower, and service factor, DOE proposes to define the terms ``DPPP 
nominal motor horsepower,'' ``DPPP motor total horsepower,'' and ``DPPP 
service factor.'' DOE proposes to define these terms 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.
    The proposed definitions are 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 
has proposed to define 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.'' 
NEMA MG-1-2014 describes consistent and comprehensive methods for 
determining the nominal horsepower of motors, including motors used in 
dedicated-purpose pool pumps, based on certain performance 
characteristics of the motor. For single-phase small and medium AC 
motors, the design and performance characteristics that serve as the 
basis for determining the applicable nominal horsepower are described 
in section 10.34 of part 10 of NEMA MG-1-2014, ``Basis of Horsepower 
Rating.'' Specifically, the horsepower rating from small and medium AC 
induction motors up to 10 nominal horsepower is based on the minimum 
breakdown torque for each model, as determined by testing at a starting 
temperature of 25 [deg]C. For polyphase small and medium AC motors, the 
applicable locked-rotor torque, breakdown torque, pull-up torque, slip, 
and locked-rotor current requirements for determining nominal 
horsepower are described in section I of part 12 of NEMA MG-1-2014, as 
summarized in Table III.17. DOE proposes to incorporate by reference 
these sections of NEMA MG-1-2014 into the DPPP test procedure.

 Table III.17--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[dash]2014 *
Locked-Rotor Torque.............  N/A...............  Section 12.37 or
                                                       12.38 of NEMA MG-
                                                       1[dash]2014 *
Pull-up Torque..................  N/A...............  Section 12.40 of
                                                       NEMA MG-
                                                       1[dash]2014 *
Locked-rotor current............  N/A...............  Section 12.35.1 of
                                                       NEMA MG-
                                                       1[dash]2014 *
Slip............................  N/A...............  Section 1.19 *
------------------------------------------------------------------------
* 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 based on the 
procedures in NEMA MG-1-2014, DOE also proposes to include instructions 
in the DPPP test procedure that reference the relevant sections of NEMA 
MG-1-2014.

[[Page 64623]]

    NEMA MG-1-2014 also describes standardized service factor values 
based on the nominal horsepower rating for open AC motors 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, 
section 12.51.2 prescribes a service factor of 1.0. DOE proposes to 
require assignment of these service factors as the DPPP service factor 
for AC motors. Section II of Part 12 of NEMA MG-1-2014 addressing DC 
motors does not provide information regarding service factor, as 
nominal synchronous speeds are typically not applicable to DC motors. 
As such, DOE proposes to assign DC motors a DPPP service factor of 1.0, 
effectively making the nominal horsepower equivalent to the total 
horsepower of the dedicated-purpose pool pump, consistent with the 
convention for rating such motors in the motor industry.
    Finally, to specify how to calculate dedicated-purpose pool pump 
total horsepower, DOE proposes to specify 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.
    DOE believes such standardized rating methods are consistent with 
the recommendations of the Working Group, would be beneficial to 
consumers in selecting and applying the equipment, and are consistent 
with existing methods used to rate motors today.
    DOE also believes that the methods described to determine DPPP 
nominal motor horsepower, DPPP motor total horsepower, and DPPP service 
factor apply to all motors that are distributed in commerce with 
dedicated-purpose pool pumps that are proposed to be subject to the 
test procedures recommended by the DPPP Working Group. (Docket No. 
EERE-2015-BT-STD-0008, No. 82, Recommendation #1-2 and #6 at pp. 1-2 
and 5) Specifically, the proposed motor rating requirements would be 
applicable to the following varieties of dedicated-purpose pool pumps:
     Self-priming pool filter pumps less than 2.5 rated 
hydraulic horsepower
     Non-self-priming pool filter pumps less than 2.5 rated 
hydraulic horsepower
     Pressure cleaner booster pumps
     Waterfall pumps
    DOE notes that these standardized horsepower metrics would be 
intended to support proposed labeling provisions for dedicated-purpose 
pool pumps, which are discussed further in section III.G.
    DOE requests comment on the proposal to use rated hydraulic 
horsepower as the primary standardized metric to describe DPPP ``size'' 
with regard to specifying the test procedure and energy conservation 
standards for dedicated-purpose pool pumps.
    DOE requests comment on the proposal to determine the 
representative value of rated hydraulic horsepower as the mean of the 
measured rated hydraulic horsepower values for each tested unit.
    DOE requests comment on the proposed definitions and testing 
methods for ``dedicated-purpose pool pump nominal motor horsepower,'' 
``dedicated-purpose pool pump service factor,'' and ``dedicated-purpose 
pool pump motor total horsepower.''
    Additionally, DOE seeks comment on whether the proposed test 
methods are applicable to all motors distributed in commerce with 
applicable dedicated-purpose pool pumps. If not, DOE requests 
additional information regarding the characteristics of any motors for 
which these procedures would not be applicable and any suggestions 
regarding alternative procedures to determine dedicated-purpose pool 
pump nominal motor horsepower, dedicated-purpose pool pump service 
factor, and dedicated-purpose pool pump motor total horsepower.
2. Determination of Self-Priming Capability
    As discussed in section III.A.3.b, DOE proposes 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. As these definitions rely on the 
NSF/ANSI 50-2015 test method to determine self-priming capability, DOE 
proposes to incorporate by reference relevant sections of the NSF/ANSI 
50-2015 standard and also proposes several modifications and additions 
to improve repeatability and consistency of the test results. 
Specifically, section C.3 of Annex C of NSF/ANSI 50-2015 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.
    In general, the self-priming capability test described in NSF/ANSI 
50-2015 consists of situating a pump above the water level of the pool 
or water tank and connecting the pump to a riser pipe that is rises a 
minimum of 5 feet above the water level. The pump suction inlet must 
also be a minimum of 5 pipe diameters from any 90 degree elbow in the 
riser pipe connecting the vertical and horizontal segments of the pipe, 
as shown in Figure III.6.

[[Page 64624]]

[GRAPHIC] [TIFF OMITTED] TP20SE16.011

    The pump is then installed according to manufacturer's instructions 
(including initial priming), turned on, and the timer started. The 
elapsed time to steady discharge gauge reading or full discharge flow 
is the ``measured priming time (MPT),'' which is then adjusted to the 
``true priming time (TPT)'' based on the relative diameters of the pump 
suction inlet and the riser pipe.\80\
---------------------------------------------------------------------------

    \80\ If the pump suction inlet and the riser pipe are the same 
diameter, MPT = TPT.
---------------------------------------------------------------------------

    To determine the self-priming capability of self-priming and non-
self-priming pool filter pumps, DOE proposes 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 proposed definitions for self-priming and non-
self-priming pool filter pumps presented in section III.A.3.b. 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 proposes to note 
that the suction line refers to the riser pipe that extends from the 
pump suction inlet to the water surface. DOE also proposes 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.

DOE believes this modification will remove ambiguity from the test 
procedure and the appropriate test setup for evaluating the self-
priming capability of pool filter pumps.

    Further, DOE notes NSF/ANSI 50-2015 does not specify where the 
measurement instruments are to be placed in the test set up. Based on 
feedback from manufacturers, DOE understands that instruments are 
typically installed at the suction inlet of the pump. DOE proposes to 
specify that all measurements of head, flow, and water temperature must 
be taken at the pump suction inlet. It is also important that all 
measurements are taken with respect to a common reference plane, which 
DOE proposes should be the centerline of the pump impeller shaft. As 
measurement instruments may be mounted slightly above the centerline of 
the pump impeller shaft, all head measurements should be adjusted back 
to the centerline. NSF/ANSI 50-2015 does not specify methods for 
performing such adjustment. Therefore, DOE proposes that such 
adjustments be performed in accordance with section A.3.1.3.1 of HI 
40.6-2014.
    DOE also notes that, while NSF/ANSI provides some flexibility 
regarding the height, or VL, of the pump above the water level, DOE's 
proposed definitions do not provide such discretion and reference only 
a vertical lift of 5.0 feet, as discussed in section III.A.3.b. 
Therefore, the VL of the test apparatus must be exactly 5.0 feet when 
testing the self-priming capability of pool filter pumps that are not 
already certified with NSF/ANSI 50-2015 and variable VL heights are not 
allowed. Therefore, to precisely specify how VL would be measured, DOE 
proposes to clarify that VL must be determined from the height of the 
water to the centerline of the pump impeller shaft.
    In addition, DOE acknowledges that the VL used in the test must be 
representative of the test conditions to

[[Page 64625]]

ensure repeatability of the results. Specifically, the caption of 
figure C.1 also provides that the VL shall be corrected to a standard 
temperature of 68[emsp14][deg]F, a pressure of 14.7 psia, and a water 
density of 62.4 lb/ft\3\. This ensures that tests performed at 
locations with, for example, a significantly higher or lower ambient 
pressure, would result in comparable results. However, NSF/ANSI 50-2015 
does not provide instructions regarding how such correction is to be 
performed. Fundamentally, the vertical height of a column of fluid of 
consistent diameter will vary proportionally with the temperature of 
the fluid (which impacts the density) and the ambient pressure. 
Therefore, DOE proposes that the VL of the test apparatus must be 
adjusted proportionally for variations in the density of the test fluid 
and/or variations in the ambient pressure. Specifically, decreases in 
density would increase the test apparatus VL, while increases in 
ambient pressure would decrease the test apparatus VL, as specified in 
equation (6). DOE notes that DOE's proposed definition for VL specifies 
a VL of 5.0 feet:
[GRAPHIC] [TIFF OMITTED] TP20SE16.012

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.

    In addition, DOE notes 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. DOE proposes to apply the accuracy requirements 
contained in HI 40.6-2014, which DOE also proposes would apply to all 
other measurements made under the DPPP test procedure, to the 
measurement devices noted in NSF/ANSI 50-2015, as detailed in Table 
III.18.

 Table III.18--Proposed Measurement Device Accuracy Requirements for Measurements Devices Specified in NSF/ANSI
                                                     50-2015
----------------------------------------------------------------------------------------------------------------
                                                 Proposed accuracy
            Measurement device                      requirement                           Source
----------------------------------------------------------------------------------------------------------------
Elapsed time indicator...................  0.1 min.........  NSF/ANSI 50[dash]2015
Gauge pressure indicating device.........  2.5% of reading   HI 40.6[dash]2014
                                            *.
Temperature indicating device............  0.5 [deg]F......  HI 40.6[dash]2014
Barometric pressure indicating device....  2.5% of reading   HI 40.6[dash]2014
                                            *.
Height...................................  0.1 inch........  N/A
----------------------------------------------------------------------------------------------------------------
* 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 notes that NSF/ANSI 50-2015 does not specify an instrument 
for measuring distance. Therefore, DOE proposes to require instruments 
for measuring distance that are accurate to 0.1 inch. DOE 
believes this will improve the consistency and repeatability of test 
results and ensure all results are, in fact, indicative of the actual 
performance. DOE also notes that this is consistent with the proposed 
requirements for distance-measuring instruments in section III.D.2.f.
    In section C.3.3, ``Test conditions,'' NSF/ANSI 50-2015 specifies 
test conditions for both swimming pools and hot tubs/spas, as shown in 
Table III.19, and states that all pumps, except those labeled as for 
swimming pool applications only, are to be tested at the hot tub/spa 
conditions.

       Table III.19--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.

    DOE notes that HI 40.6-2014, which is proposed to be incorporated 
by reference into the DPPP test procedure (see section III.D.1), also 
contains requirements for water conditions when testing pumps. 
Specifically, HI 40.6-2014 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\.
    With regard to the temperature requirements, DOE notes that, 
although all pumps addressed by this rule are dedicated-purpose pool 
pumps, storable electric and rigid electric spa pumps are excluded from 
the proposed test procedure, as discussed in section III.A.5. While DOE 
acknowledges that some dedicated-purpose pool pumps may be installed in 
the field in either swimming pools or permanent spas, DOE believes that 
the swimming pool temperatures would be more applicable to the 
equipment under consideration in this rule. Therefore, DOE proposes 
that tests of self-priming capability for those pool filter pumps not 
already certified with NSF/ANSI 50-2015 be conducted at temperatures 
representative of swimming pools. DOE clarifies that this proposal 
would only affect those pumps that are not already certified with NSF/
ANSI 50-2015. As DOE's proposal for self-priming pool filter pump 
includes pool filter pumps that are certified as self-priming under 
NSF/ANSI 50-2015 (see section III.A.3.b), pool filter pumps may 
continue to be certified based on testing with hot tub/spa water 
conditions for the purposes of NSF/ANSI certification. In addition, DOE 
notes that the temperature range of clear water in HI 40.6-2014 is 
similar to that

[[Page 64626]]

established by NSF/ANSI 50-2015 for swimming pools.
    Regarding the specification of water properties or clarity, DOE 
notes 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. In 
addition, DOE notes that viscosity is a characteristic of water that 
would affect the thermodynamic properties of water, but may not affect 
the turbidity.
    Therefore, DOE finds the viscosity and density requirements in HI 
40.6-2014 to potentially be more descriptive regarding the necessary 
criteria for ensuring all pump tests are conducted with clear water. 
Therefore, DOE proposes 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. As the temperature range of clear water in HI 40.6-2014 is 
similar to that established by NSF/ANSI 50-2015 and the viscosity and 
density requirements are intended to accomplish the same goal, DOE does 
not believe that the proposed HI 40.6-2014 requirements would result in 
different measurements or results. In addition, DOE notes that, in NSF/
ANSI 50-2015, the reported VL is to be corrected to a standard 
temperature of 68 [deg]F, a pressure of 14.7 psia, and a water density 
of 62.4 lb/ft\3\, which further obviates the need for elevated 
temperature testing.
    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 MPT. However, 
NSF/ANSI 50-2015 does not specify how to determine ``steady discharge 
gauge reading or full discharge flow.'' DOE proposes 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. DOE also proposes that tested pumps must meet 
both pressure and flow stabilization requirements prior to recording 
MPT. That is, the measurement must be taken under stable conditions. 
However, DOE recognizes that it will take some non-trivial amount of 
time to determine stabilized flow prior to recording the elapsed time, 
which would then no longer be indicative of the time at which the pump 
reached that flow and head point. Therefore, DOE also proposes to 
clarify that the elapsed time should be recorded when steady state 
pressure and flow readings have been achieved, where steady state is 
achieved when the measured data remain constant within the permissible 
amplitudes of fluctuation defined in table 40.6.3.2.2 of HI 40.6-2014. 
Then the MPT would be determined by examining the data and evaluating 
when that load point was first achieved. Note, DOE also proposes that 
both pressure and flow measurements be required to achieve steady 
state, as DOE believes both would be necessary to ensure the pump is 
operating at stable conditions.
    Section C.3.4 of NSF/ANSI 50-2015 then specifies that the 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 (7):
[GRAPHIC] [TIFF OMITTED] TP20SE16.013

DOE notes that, while 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. Therefore, DOE proposes 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. Therefore, 
no adjustment of MPT would be required and TPT would be measured 
directly.
    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. 
However, NSF/ANSI 50-2015 does not specify how these duplicative 
measurements should be treated, but does require in section C.3.5 that 
both measurements must be less than 6 minutes or the manufacturer's 
specified TPT, whichever is greater. However, DOE notes that the 
criteria for TPT established in DOE's proposed definitions instead 
reference a TPT of 10.0 minutes. Consistent with this intent, DOE 
believes that it would be most appropriate to specify that both test 
runs result in TPT values that are less than or equal to 10.0 minutes.
    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 proposed definitions reference a specific TPT of 10.0 minutes and 
VL of 5.0 feet. Therefore, DOE proposes 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 proposed definition.
    Table III.20 provides a summary of DOE's proposed modifications and 
additions to NSF/ANSI 50-2015 to remove ambiguity from the SNF/ANSI 50-
2015 test method, improve the repeatability of the test, and harmonize 
the test requirements with the other proposed DPPP test procedure 
requirements contained in this NOPR.

  Table III.20--Summary of Proposed Modifications and Additions to NSF/
                ANSI 50-2015 Self-Priming Capability Test
------------------------------------------------------------------------
                                                         DOE Proposed
    NSF/ANSI 50-2015 Section       NSF/ANSI 50-2015      modification/
                                     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\.

[[Page 64627]]

 
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 86 [deg]F, as
                                   measurements at     specified in HI
                                   hot tub/spa         40.6-2014.
                                   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.
------------------------------------------------------------------------

    DOE requests comment on the proposal to incorporate by reference 
the test method contained in section C.3 of NSF/ANSI 50-2015, with the 
minor modifications and additions summarized in Table III.20, to 
measure the self-priming capability of pool filter pumps.
3. Determination of Maximum Head
    As noted in section III.A.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, DOE 
proposes 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. DOE notes that the minimum 
flow rate will be assumed to be zero unless otherwise specified in the 
manufacturer literature.
    DOE requests comment on the proposed method for determining the 
maximum head of pool filter pumps when differentiating waterfall pumps 
from other pool filter pump varieties.

F. Representations of Energy Use and Energy Efficiency

    Manufacturers of dedicated-purpose pool pumps within the scope of 
the DPPP test procedure would be required to use the test procedure 
proposed 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 ``[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, manufacturers of equipment that are addressed by this 
test procedure would have 180 days after the promulgation of any TP 
final rule to begin using the DOE procedure as the basis for 
representations. However, manufacturers would not be required to 
certify or 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 may set 
for dedicated-purpose pool pumps. However, if manufacturers elect to 
make representations of WEF prior to such compliance date, they would 
be required to do so using the DOE test procedure.
    As discussed in section III.E.1, DOE also proposes standardized and 
consistent methods for determining several DPPP horsepower metrics, 
including rated hydraulic horsepower, DPPP nominal motor horsepower, 
DPPP total horsepower, and DPPP service factor. Section III.E.1 also 
discusses how manufacturers currently use a variety of terms to refer 
to these DPPP motor characteristics. Similar to WEF, 180 days after the 
publication of any final rule establishing such test methods, the DPPP 
nominal motor horsepower, DPPP total horsepower, and DPPP service 
factor would be required to be based on values consistent with the DOE 
test procedure. DOE notes that this includes any common synonyms for 
such quantities. For example, all references to capacity of the motor, 
nameplate horsepower, DPPP motor capacity, rated horsepower, service 
factor horsepower, total horsepower, or similar metrics would need to 
be updated to refer to the DPPP nominal motor horsepower or DPPP total 
horsepower, as applicable, and generated based on the DPPP test methods 
for these metrics beginning 180 days after the publication of any DPPP 
test procedure final rule.
    With respect to representations, generally, DOE understands that 
manufacturers often make representations (graphically or in numerical 
form) of energy use metrics, including EF, pump efficiency, overall 
(wire-to-water) efficiency, driver power input, and/or pump power 
output (hydraulic horsepower) and may make these representations at a 
variety of different load points or operating speeds. DOE proposes to 
allow manufacturers to continue making these representations. However, 
in order to ensure consistent and standardized representations across 
the DPPP industry and to ensure such representations are not in 
conflict with the reported WEF for any given DPPP model, DOE proposes 
to establish optional testing procedures for these parameters that are 
part of the DOE test procedure. DOE also proposes that, to the extent 
manufacturers wish to make representations regarding the

[[Page 64628]]

performance of dedicated-purpose pool pumps using these additional 
metrics, they would be required to do so based on testing in accordance 
with the DOE test procedure.
    DOE notes that pump efficiency, overall (wire-to-water) efficiency, 
driver power input, and/or pump power output (hydraulic horsepower) are 
already parameters that are described in HI 40.6-2014, which DOE 
proposes to incorporate by reference in the DOE test procedure (section 
III.D.1). DOE believes that further specification is not necessary 
regarding the determination of these parameters.
    Regarding EF, which is currently the metric most commonly used to 
describe DPPP performance, DOE proposes to adopt in the DOE test 
procedure, optional provisions that describe how to calculate EF at any 
given load point. Specifically, DOE also proposes to establish the four 
most common reference curves (curves A, B, C, and D), as shown in Table 
III.21.

       Table III.21--Systems Curves for Optional EF Test Procedure
------------------------------------------------------------------------
               System curve                          Definition
------------------------------------------------------------------------
Curve A...................................  H = 0.0167 x Q[sup2].
Curve B...................................  H = 0.050 x Q[sup2].
Curve C...................................  H = 0.0082 x Flow (gpm)\2\.
Curve D...................................  H = 0.0044 x Flow (gpm)\2\.
------------------------------------------------------------------------

    In addition, DOE proposes to specify that EF may be determined at 
any available speed. DOE recognizes that the existing industry programs 
and test methods for dedicated-purpose pool pumps restrict the load 
points at which EF may be determined for each DPPP configuration, based 
on the style of motor and/or control with which the pump is distributed 
in commerce, as shown in Table III.22. However, DOE does not believe 
such restriction is necessary for a voluntary metric, like EF.

      Table III.22--Proposed Speeds for Optional EF Test Procedure
------------------------------------------------------------------------
             Pump speed(s)                        Tested speeds
------------------------------------------------------------------------
Single-speed..........................  Max Speed on Curves A, B, C, and/
                                         or D.
Two-speed.............................  Max and Min Speed on Curves A,
                                         B, C, and/or D.
Multi-speed...........................  All Available Speed on Curves A,
                                         B, C, and/or D.
Variable speed........................  Max, Min, and Most Efficient
                                         Speed on Curves A, B, C, and/or
                                         D.
------------------------------------------------------------------------

    At each specified load point, DOE proposes that EF would be 
calculated in according to equation (8), which DOE notes is consistent 
with existing industry procedures (see section III.B.1):
[GRAPHIC] [TIFF OMITTED] TP20SE16.014

Where:

EF = energy factor, determined at any given load point, in kgal/kWh;
Q = flow rate at any given load point, in gal/min; and
P = input power to the motor (or controls, if present) at any given 
load point, in watts.

    DOE proposes to incorporate units consistent with those proposed 
for the WEF, as recommended by the DPPP Working Group (see section 
III.B.1). That is, flow is determined in gal/min, input power to the 
motor or controls is determined in W, and EF is determined in kgal/kWh.
    DOE also proposes that these load points would be found using the 
same test methods proposed in the DPPP test procedure. Specifically, 
the measurement of pump input power and flow rate, as well as any other 
relevant parameters, would be made in accordance with certain sections 
of HI 40.6-2014, with the specific exceptions, modifications, and 
additions noted in section III.D.2. However, instead of the load points 
specified for each of the DPPP varieties and speed configurations 
specified in sections III.C to calculate WEF, pump manufacturers could 
determine and make representations regarding EF on the optional system 
curves specified in Table III.21 at any desired speed.
    If adopted, this means that 180 days after the publication date of 
any DPPP TP final rule, manufacturers would only be able to make 
representations of EF in accordance with the proposed DPPP test 
procedure. DOE believes providing a standardized method for determining 
EF at the specified load points would benefit manufacturers and 
consumers by ensuring consistent, reliable, and representative 
representations of energy performance, based on the optional EF metric. 
However, DOE does not wish to unnecessarily limit the extent to which 
manufacturers may make optional representations regarding EF at 
representative load points that would provide important information to 
the customer. DOE believes the proposed specific load points are 
comprehensive and represent all EF values that manufacturers either 
currently use to make representations, or may use to make in the 
future. Therefore, DOE believes this proposal would strike a balance 
between not limiting a manufacturer's ability to make EF 
representations at desired load points, but would provide the benefit 
of additional consistency and comparability of EF values by providing a 
specific test procedure and discrete load points at which EF could be 
determined.
    DOE requests comment on its proposal to adopt optional provisions 
for the measurement of several other DPPP metrics, including EF, pump 
efficiency, overall (wire-to-water) efficiency, driver power input, 
and/or pump power output (hydraulic horsepower), in addition to the 
required representations.
    DOE also requests comment on its belief that HI 40.6-2014 contains 
all the necessary methods to determine pump efficiency, overall (wire-
to-water) efficiency, driver power input, and/or pump power output 
(hydraulic horsepower) and further specification is not necessary.
    Finally, DOE requests comment on the proposed optional test 
procedure to determine EF on the specific reference curves A, B, C, and 
D at any available operating speed.

G. Labeling Requirements

    In the June 2016 DPPP Working Group recommendations, the DPPP 
Working Group recommended that DOE 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). As discussed in section III.E.1, the DPPP industry 
currently uses a variety of metrics to describe the ``size'' of a 
dedicated-purpose pool pump, including nominal motor horsepower, total 
horsepower, service factor horsepower, and hydraulic horsepower, among 
others. To standardize the terminology and testing procedures for 
determining DPPP size and motor horsepower information, as discussed in 
section III.E.1, DOE proposed definitions and specific test methods for 
determining rated hydraulic horsepower, DPPP nominal motor horsepower, 
DPPP motor total horsepower, and service factor. DOE also proposes 
specific sampling plans and calculation procedures for determining the 
representative values of these and other relevant DPPP metrics, as 
discussed in section III.I.1.
    To implement the recommendations of the DPPP Working Group, DOE 
proposes to require labeling of all dedicated-purpose pool pumps for

[[Page 64629]]

which the DPPP Working Group recommended test procedures. That is, DOE 
proposes that the labeling requirements be applicable to:
     Self-priming pool filter pumps less than 2.5 rated 
hydraulic horsepower \81\
---------------------------------------------------------------------------

    \81\ 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
     Waterfall pumps
    For self-priming pool filter pumps, non-self-priming pool filter 
pumps, pressure cleaner booster pumps, and waterfall pumps, DOE 
proposes 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.
    DOE also proposes specific requirements regarding the formatting of 
required information on the nameplate and the specific terminology that 
is required to be displayed. However, DOE proposes 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.
    DOE requests comment on the proposed labeling requirements for 
dedicated-purpose pool pumps.
    DOE requests comment on any other information that should be 
included on the permanent nameplate or in manufacturer literature to 
aid customers of dedicated-purpose pool pumps in proper selection and 
application of DPPP units.

H. Replacement DPPP Motors

    DOE understands that DPPP motors wear out much more frequently than 
DPPP bare pumps and, thus, replacement DPPP motors are often sold to 
replace the original motor with which the pump was sold. Although DOE 
does not intend to regulate replacement DPPP motors because they do not 
(by themselves) meet the definition of a dedicated-purpose pool pump, 
DOE understands that it may be beneficial to have a method to determine 
an applicable WEF for replacement DPPP motors. This could be 
advantageous for replacement motor manufacturers to label their 
products and for utilities or efficiency programs to encourage the sale 
of replacement DPPP motors that would maintain or increase the savings 
of the dedicated-purpose pool pump, as installed in the field.
    Therefore, DOE proposes to establish an optional method to 
determine the WEF for replacement DPPP motors. Specifically, under this 
method, the replacement motor would be paired with an appropriate DPPP 
bare pump and the combination would be subject to the proposed DOE test 
procedure for that dedicated-purpose pool pump, based on the DPPP 
variety and speed configuration.
    DOE recognizes that replacement DPPP motors may be offered for sale 
or advertised to be paired with multiple DPPP bare pumps, and each 
combination may have a different WEF. Since each of these bare pumps 
may impact the WEF rating, each replacement DPPP motor and DPPP bare 
pump pairing would represent a unique pairing. Therefore, DOE proposes 
that the WEF for each replacement DPPP motor-DPPP bare pump pairing be 
determined separately. However, consistent with DOE's treatment of all 
equipment, DOE proposes to 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. Specifically, for other equipment, DOE 
provides that manufacturers may elect to group similar individual 
models within the same equipment class into the same basic model to 
reduce testing burden, provided all representations regarding the 
energy use of individual models within that basic model are identical 
and based on the most consumptive unit. See 76 FR 12422, 12423 (Mar. 7, 
2011).\82\ Similarly, manufacturers of replacement DPPP motors could 
opt to make representations of the WEF of each individual replacement 
DPPP motor and DPPP bare pump combination, or may elect to make WEF 
representations regarding a replacement DPPP motor combined with 
several individual DPPP bare pumps of the same equipment class, and 
rate the group with the same representative WEF value, which would be 
representative of the least efficient model. DOE also proposes that 
replacement DPPP motor manufacturers would need to make a statement, 
along with any advertised WEF value, regarding the specific DPPP bare 
pump to which it applies. If no specific DPPP bare pumps are 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. That is, it is representative of 
the least efficient DPPP bare pump available for each equipment class.
---------------------------------------------------------------------------

    \82\ 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 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).
---------------------------------------------------------------------------

    DOE requests comment on the proposed optional test procedure for 
replacement DPPP motors. Specifically, DOE seeks comment as to any 
additional details that should be addressed in testing a replacement 
DPPP motor with any given DPPP bare pump to determine applicable WEF 
values.

I. 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 (as discussed in section III.E) and when 
determining compliance with prescribed energy conservation standards. 
DOE proposes that DPPP manufacturers must use a statistical sampling 
plan consistent with the sampling plan for pumps that is currently 
specified at 10 CFR 429.59. Manufactures would use these sampling plans 
to determine the representative values of WEF and other metrics 
necessary to demonstrate compliance with any energy conservation 
standards DOE may set for dedicated-purpose pool pumps. In addition, 
DOE commonly specifies enforcement procedures that DOE will follow to 
verify compliance of a basic model. The following sections III.I.1 
III.I.2, and III.I.3 discuss DOE's proposed sampling plan, 
certification requirements, and enforcement provisions for dedicated-
purpose pool pumps, respectively.

[[Page 64630]]

1. Sampling Plan
    DOE provides, in subpart B to 10 CFR part 429, sampling plans for 
all covered equipment. As mentioned previously, the purpose of a 
statistical sampling plan is to provide a method to ensure that the 
test sample size (i.e., number of units tested) was sufficiently large 
that a represented value of energy- and non-energy-related metrics is, 
in fact, representative of the population of units in the basic model. 
In the January 2016 general pumps TP final rule, DOE adopted sampling 
provisions applicable to pumps that were similar to those used for 
other commercial and industrial equipment. 81 FR 4086, 4135-36 (Jan. 
25, 2016).
    For dedicated-purpose pool pumps, DOE proposes to adopt statistical 
sampling plans similar to that adopted for pumps. That is, DOE proposes 
to amend 10 CFR 429.59 to require that, for each basic model of pump 
(including dedicated-purpose pool pumps), a sample of sufficient size 
must be randomly selected and tested to ensure that any representative 
value of WEF, EF, or other measure of energy consumption of a basic 
model for which customers would favor higher values is less than or 
equal to the lower of the following two values:

(1) The mean of the sample, where:
[GRAPHIC] [TIFF OMITTED] TP20SE16.015

and x is the sample mean; n is the number of samples; and xi 
is the maximum of the ith sample;
(2) The lower 95 percent confidence limit (LCL) of the true mean 
divided by 0.95, where:
[GRAPHIC] [TIFF OMITTED] TP20SE16.016

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 subpart B of 10 CFR part 429).
    DOE also proposes similar provisions for quantities, such as pump 
input power, for which consumers would favor lower values. See 10 CFR 
429.59(a)(1)(ii).
    Under this proposal, for purposes of certification testing, the 
determination that a basic model complies with the applicable energy 
conservation standard would be based on testing conducted using the 
proposed DOE test procedure and sampling plan. The general sampling 
requirement currently applicable to all covered products and equipment 
provides that a sample of sufficient size must be randomly selected and 
tested to ensure compliance and that, unless otherwise specified, a 
minimum of two units must be tested to certify a basic model as 
compliant. 10 CFR 429.11(b)
    DOE proposes to apply this same minimum sample size requirement to 
dedicated-purpose pool pumps. Thus, DOE proposes that a sample of 
sufficient size be selected to ensure compliance and that at least two 
units must be tested to determine the representative values of 
applicable metrics for each basic model. Manufacturers may need to test 
a sample of more than two units depending on the variability of their 
sample, as provided by the statistical sampling plan.
    DOE notes that the proposed sampling provisions would be applicable 
to all energy-related metrics for which a DPPP manufacturer elected to 
make representations, including overall efficiency. DOE believes that, 
similar to other pumps, an upper confidence limit (UCL) and LCL of 
0.95, which are divided by a de-rating factor of 1.05 and 0.95, 
respectively, would also be appropriate for dedicated-purpose pool 
pumps. Specifically, DOE believes dedicated-purpose pool pumps would 
realize similar performance variability to general pumps.
    In addition to WEF, DOE also notes that the rated hydraulic 
horsepower, as defined in section III.E.1, is an important 
characteristic for determining the appropriate load points for testing 
and characterizing the capacity of a given DPPP model. Therefore, DOE 
also proposes a method to determine the ``representative value'' of 
rated hydraulic horsepower for each DPPP basic model. That is, DOE 
proposes that the representative value of rated hydraulic horsepower be 
determined as the average of all the tested units that serve as the 
basis for the rated efficiency for that basic model. Similarly, the 
DPPP nominal motor horsepower, DPPP motor total horsepower, and service 
factor are important characteristics that may aid customers in properly 
selecting and applying dedicated-purpose pool pumps. Consistent with 
the DPPP Working Group recommendations, as discussed in section III.E.1 
and III.G, DOE proposes standardized methods for determining these DPPP 
motor characteristics and that such information be included on the 
permanent label affixed to each DPPP unit. To ensure such values are 
determined in a consistent manner, DOE also proposes that DPPP nominal 
motor horsepower, DPPP motor total horsepower, and service factor be 
determined based on the average of the test results, for each metric, 
from all the tested units that serve as the basis for the rating for 
that basic model. That is, DOE proposes specific test methods for 
determining DPPP nominal motor horsepower based on the tested torque, 
current, and slip characteristics of the DPPP motor. DOE proposes that 
the DPPP nominal motor horsepower be determined based on the average 
breakdown torque, locked-rotor torque, pull-up torque, locked-rotor 
current, and slip (as applicable) for each tested unit of DPPP motor. 
The representative values of DPPP service factor and DPPP motor total 
horsepower are then calculated based on that representative value of 
DPPP nominal motor horsepower. DOE recognizes that, in many cases, such 
testing may be performed by the motor manufacturer and, as such, DOE 
notes that the tested DPPP motor units and the DPPP units do not have 
to be the same units, provided they are representative of the same 
population.
    Finally, consistent with provisions for other commercial and 
industrial equipment, DOE notes the applicability of certain 
requirements regarding retention of certain information related to the 
testing and certification of dedicated-purpose pool pumps, which are 
detailed under 10 CFR 429.71. Generally, manufacturers must establish, 
maintain, and retain certification and test information, including 
underlying test data for all certification testing for 2 years from the 
date on which the dedicated-purpose pool pump is no longer distributed 
in commerce.
    DOE requests comment on the proposed statistical sampling 
procedures and certification requirements for dedicated-purpose pool 
pumps.
2. Certification Requirements
    Paragraph (b) of 10 CFR 429.59 contains the certification 
requirements for certain styles of pump for which DOE adopted test 
procedures and standards in the January 2016 general pumps TP and ECS 
final rules. 81 FR 4086 (Jan. 25, 2016); 81 FR 4368 (Jan. 26, 2016). 
Since dedicated-purpose pool pumps are a style of pump, DOE proposes to 
amend 10 CFR 429.59 to include the reporting requirements for 
dedicated-purpose pool pumps. 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, as dedicated-purpose pool pumps have a

[[Page 64631]]

unique test procedure and metric from general pumps, DOE proposes to 
establish unique certification requirements for dedicated-purpose pool 
pumps that would require manufacturers to supply certain additional 
information to DOE in certification reports to demonstrate compliance 
with any energy conservation standards that DOE may set.
    Specifically, for a dedicated-purpose pool pump subject to the test 
procedure proposed in this NOPR (i.e., self-priming and non-self-
priming pool filter pumps, waterfall pumps, and pressure cleaner 
booster pumps, see section III.A.6), DOE proposes 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.
    Such data are necessary for DOE to verify compliance of the given 
DPPP model, to determine the appropriate test procedure method to 
follow when verifying ratings, and to verify the accuracy of 
information provided on the label of any applicable DPPP models.
    In the June 2016 DPPP Working Group recommendations, the 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 is proposing 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.
    In addition, as discussed above in section III.A.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 Working Group, DOE proposes 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 rpm).
    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.I.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 times 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 proposes the certification report contain the maximum 
run-time of the pool pump control with which the integral cartridge-
filter or sand-filter pump is distributed in commerce.
    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. As 
discussed during the DPPP Working Group negotiations, the input power 
and flow rate at each applicable load point and the EF at multiple load 
points would be useful for utilities in calculating energy savings 
associated with dedicated-purpose pool pumps in specific applications. 
(Docket No. EERE-2015-BT-STD-0008, No. 54 at pp. 5-7) As discussed in 
section III.F, DOE is proposing to establish in the DPPP test procedure 
specific methods to calculate EF at any desired speed on any of the 
specified optional system curves (i.e., Curve A, B, C, or D). 
Therefore, to provide additional information to consumers and the 
market place, DOE proposes 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

[[Page 64632]]

     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.
    While 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 would be optional and at the 
discretion of the manufacturer.
    DOE notes that, as specified in paragraph (a) of 10 CFR 429.12, the 
certification requirements for covered products and equipment, 
including those proposed for dedicated-purpose pool pumps in this NOPR, 
are only applicable to equipment subject to an applicable energy 
conservation standard set forth in part 430 or 431. Therefore, the 
certification requirements proposed in this NOPR would only be required 
when and if any energy conservation standards for dedicated-purpose 
pool pumps are established and in effect.
    DOE requests comment on the proposed mandatory and optional 
reporting requirements for certification of dedicated-purpose pool 
pumps.
3. Enforcement Provisions
    Enforcement provisions govern the process DOE would 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 would 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 would conduct the applicable DPPP 
test procedure, once adopted, to determine the WEF for tested DPPP 
models. In addition, DOE believes that, as dedicated-purpose pool pumps 
have relatively large shipments and are generally a high-volume piece 
of equipment, DOE should apply the enforcement testing sample size and 
calculations applicable to consumer products and certain high-volume 
commercial equipment specified in appendix A to subpart C of 10 CFR 
part 429. Therefore, DOE proposes 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 would test an 
initial sample of at least 4 units and determine the mean WEF value and 
standard error of the sample. DOE would 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 notes that DOE adopted enforcement testing sample size and 
calculations for general pumps in the January 2016 general pumps TP 
final rule. Specifically, in the January 2016 general pumps TP final 
rule, DOE adopted provisions at 10 CFR 429.110(e)(5) \83\ stating that 
DOE would assess compliance of any pump basic models undergoing 
enforcement testing based on the arithmetic mean of up to four units. 
81 FR 4086, 4145 (Jan. 25, 2016). To clarify that the enforcement 
provisions adopted in the January 2016 general pumps TP final rule are 
only applicable to those pumps subject to the test procedure adopted in 
the January 2016 general TP final rule, DOE also proposes to clarify 
the applicability of the provisions at 10 CFR 429.110(e)(5).
---------------------------------------------------------------------------

    \83\ DOE notes that the 2016 general pumps TP final rule were 
originally adopted into 10 CFR 429.110(e)(1)(iv), but a recent 
rulemaking reorganized the enforcement provisions for various 
equipment, including pumps, to place the pump enforcement provisions 
in 10 CFR 429.110(e)(5). 81 FR 31827, 31841 (May 20, 2016).
---------------------------------------------------------------------------

    In addition, when determining compliance of any units tested for 
enforcement purposes, DOE proposes to adopt provisions that specify how 
DOE would determine the rated hydraulic horsepower at maximum speed on 
the reference curve, which describes the capacity of the DPPP model 
(see section III.E.1) for determining the appropriate standard level 
for any tested equipment (if applicable). Specifically, DOE proposes 
that DOE would 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.C) on one or more units of each model selected for testing. DOE 
proposes 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 would use 
the certified value of rated hydraulic horsepower as the basis for 
determining the standard level for tested equipment. This would give 
manufacturers certainty regarding the appropriate standard level their 
equipment would be subject to in enforcement testing. However, if DOE's 
tested value of rated hydraulic horsepower is not within 5 percent of 
the certified value of rated hydraulic horsepower, DOE would use the 
arithmetic mean of all the rated hydraulic horsepower values resulting 
from DOE's testing when determining the standard level for tested 
equipment. DOE believes such an approach would result in more 
reproducible and equitable rating of equipment and compliance 
determinations among DOE, manufacturers, and test labs.
    DOE developed the 5 percent tolerance on hydraulic power based on 
statistical analysis of the maximum allowed testing uncertainty due to 
fluctuations in measurements, measurement uncertainty, and the typical 
manufacturing variability. The maximum experimental uncertainty is 
discussed in HI 40.6-2014, which DOE proposes to incorporate by 
reference in the DOE test procedure (section III.D.1). DOE estimated 
the manufacturing variability based on the maximum tolerances on head 
and flow that are allowed in the NSF/ANSI 50-2015 standard. 
Specifically, NSF/ANSI 50-2015 requires that the tested flow be within 
5 percent of the pump performance curve and the tested head 
be within -3 to +5 percent of the pump performance curve, whichever is 
greater (see section III.D.2.d). However, DOE recognizes that these are 
all worst-case uncertainties and that testing a unit with the maximum 
possible variability in every parameter would be extremely unlikely. 
Therefore, DOE assumed that the maximum uncertainty would represent a 
worst case. For the purposes of analysis, DOE assumed the maximum 
uncertainty was three standard deviations away from the mean 
(encompassing 99.7 percent of the population). In this enforcement 
testing procedure, DOE proposes to use a tolerance of one standard 
deviation. DOE notes that this is also consistent with the tolerances 
on flow and head allowed for in NSF/ANSI 50-2015.
    In addition, DOE proposes similar procedures for relevant 
quantities necessary to differentiate the different varieties of pool 
filter pumps: Self-priming pool filter pumps, non-self-priming pool 
filter pumps, and waterfall pumps. Specifically, to differentiate

[[Page 64633]]

waterfall pumps, DOE proposes to establish an enforcement testing 
procedure for the maximum head value. Similar to rated hydraulic 
horsepower, DOE would perform the proposed test procedure for 
determining maximum head (discussed in section III.E.3) on one or more 
units and compare the testing results to the value of maximum head 
certified by the manufacturer. If the value certified by the 
manufacturer is within 5 percent of the test values, DOE would use the 
manufacturer's certified value and resultant equipment class. 
Otherwise, DOE would use the enforcement testing results to determine 
the applicable equipment class and standard level. Similarly, to 
differentiate self-priming and non-self-priming pool filter pumps, DOE 
would perform the self-priming capability test and determine the 
vertical lift and true priming time of one or more tested units. DOE 
would also use the manufacturer's certified values and equipment class 
designation, provided the vertical lift and true priming time 
determined in DOE's testing is within 5 percent of the manufacturer's 
certified values.
    DOE requests comment on the proposed enforcement provisions for 
dedicated-purpose pool pumps. Specifically, DOE seeks comment upon the 
applicability of a 5 percent tolerance on rated hydraulic horsepower, 
maximum head, vertical lift, and true priming time for each tested DPPP 
model or if a higher or lower percentage variation would be justified.
    In addition, as discussed in section III.I.2, as part of its 
extended charter, the DPPP Working Group recommended requirements that 
require 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. 74 at pp. 16).

    Relatedly, the DPPP Working Group 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. 
Id.
    Therefore, based on the DPPP Working Group recommendations, DOE 
proposes a procedure to verify the presence and operation of any freeze 
protection controls distributed in commerce with any applicable 
dedicated-purpose pool pump. The verification procedure would consist 
of testing the dedicated-purpose pool pump with the default, as-shipped 
control settings in a test apparatus identical to that described in 
section III.D for determining the WEF of applicable pool pumps, except 
that the ambient temperature registered by the freeze protection 
ambient temperature sensor would also be able to be controlled. This 
could 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, or other 
means to simulate and vary the ambient temperature registered by the 
freeze protection temperature sensor(s).
    The general procedure would begin 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 (see stabilization requirements in III.D, 
which DOE proposes would also be applicable to this verification 
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 
with the stated design requirement for freeze protection controls. 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 was still 
circulating water after 30.0 minutes of operation at 42  
0.5 [deg]F; or if rotating speed for freeze protection was 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.
    DOE requests comment on the proposed verification procedure for 
DPPP freeze protection controls.
    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.

IV. Procedural Issues and Regulatory Review

A. Review Under Executive Order 12866

    The Office of Management and Budget (OMB) has determined that TP 
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.

B. Review Under the Regulatory Flexibility Act

    The Regulatory Flexibility Act (5 U.S.C. 601 et seq.) requires 
preparation of an initial regulatory flexibility analysis (IFRA) 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 proposed rule, which would establish 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 tentatively

[[Page 64634]]

concludes that the proposed rule, if adopted, would 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 proposed test 
procedure. That is, any burden associated with testing dedicated-
purpose pool pumps in accordance with the requirements of this test 
procedure would not be required until the promulgation of any energy 
conservation standards final rule for dedicated-purpose pool pumps, as 
discussed in section II. On this basis, this NOPR has no incremental 
burden associated with it and a regulatory flexibility analysis is not 
required.
    While DOE maintains that this proposed test procedure has no 
incremental burden associated with it when viewed as a stand-alone 
rulemaking, DOE recognizes that DPPP energy conservation standards are 
currently being considered in a negotiated rulemaking that is ongoing 
(Docket No. EERE-2015-BT-STD-0008) and may be proposed or promulgated 
in the near future. In addition, DOE realizes that manufacturers often 
provide information about the energy performance of the dedicated-
purpose pool pumps they manufacture since this information is an 
important marketing tool to help distinguish their dedicated-purpose 
pool pumps from competitor offerings. While manufacturers may elect to 
make such representations regarding WEF or other DPPP energy 
performance characteristics, DOE reiterates that making such 
representations regarding the energy efficiency or energy use of 
covered DPPP models is voluntary and thus the proposed test procedure 
does not have any incremental burden associated with it. That is, if 
necessary, a manufacturer could elect to not make representations about 
the energy use of covered DPPP models. However, given the ongoing DPPP 
energy conservation standards rulemaking (Docket No. EERE-2015-BT-STD-
0008) and the potential testing manufacturers may elect to undertake 
prior to the compliance date of any potential standards, DOE is 
estimating in this NOPR the full cost of developing certified ratings 
for covered DPPP models for the purposes of making representations 
regarding the energy use of covered equipment or certifying compliance 
to DOE under any future energy conservation standards. Therefore, while 
such is not required yet, DOE is presenting the costs associated with 
testing equipment consistent with the requirements of the proposed test 
procedure, as would be required to certify compliance with any future 
energy conservation standard. DOE presents the results of such analysis 
in the following sections.
    However, DOE is not determining the significance of that burden 
with respect to manufacturers' financial situation or status as a small 
entity. As the use of the testing requirements contained in this NOPR 
is contingent upon the energy conservation standards rulemaking, DOE 
believes it would be more appropriate to analyze the effect of the 
combined burden associated with both the test procedure and energy 
conservation standards rulemakings in the manufacturer impact analysis 
performed as part of any energy conservation standards rulemaking. 
Therefore, the estimates provided in this test procedure regulatory 
flexibility analysis serve only to provide information about the 
possible burden manufacturers may incur while testing pumps using this 
DOE test procedure; they do not represent actual burden incurred by the 
industry as there is no incremental burden associated with the proposed 
test procedure until and unless any associated DPPP energy conservation 
standards final rule is published.
1. Burden of Conducting the Proposed DOE DPPP Test Procedure
    As dedicated-purpose pool pumps would be newly regulated equipment, 
DOE currently has no test procedures or standards for this equipment. 
In this TP NOPR, DOE proposes to amend subpart Y to 10 CFR part 431 to 
include definitions and a test procedure applicable to a specific 
subset of dedicated-purpose pool pumps, including self-priming and non-
self-priming pool filter pumps, waterfall pumps, and pressure cleaner 
booster pumps. The proposed test procedure would not apply to integral 
cartridge-filter pool pumps, integral sand-filter pool pumps, storable 
electric spa pumps, or rigid electric spa pumps (see section III.A.6 
for more discussion).
    In the proposed test procedure, DOE proposes a new metric, called 
the weighted energy factor (WEF), to characterize the energy 
performance of dedicated-purpose pool pumps within the scope of this 
test procedure. The WEF is determined as a weighted average of water 
flow rate over the input power to the dedicated-purpose pool pump at 
different load points, depending on the variety of dedicated-purpose 
pool pump and the number of operating speeds with which it is 
distributed in commerce. The proposed test procedure contains the 
methods for determining: (1) The WEF and rated hydraulic horsepower for 
self-priming and non-self-priming pool filter pumps, waterfall pumps, 
and pressure cleaner booster pumps; (2) the self-priming capability of 
pool filter pumps to effectively differentiate self-priming and non-
self-priming pool filter pumps; (3) the WEF for replacement DPPP 
motors; and (4) optional test methods to determine additional energy 
performance metrics applicable to dedicated-purpose pool pumps. To 
determine the applicable measured values for determining DPPP 
performance, DOE proposes to incorporate by reference the test methods 
established in HI 40.6-2014, ``Methods for Rotodynamic Pump Efficiency 
Testing,'' with certain exceptions.
    This NOPR also proposes requirements regarding the sampling plan 
and representations for covered 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, among other things, require a sample size 
of at least two units per DPPP basic model be tested when determining 
representative values WEF, as well as other DPPP performance metrics.
    To estimate the burden associated with the testing and sampling 
plan requirements proposed in this TP NOPR, DOE understands that in 
order to conduct the proposed test procedure, each manufacturer would 
have to either (a) have the units tested in house or (b) have the units 
tested at a third party testing facility. If the manufacturer elects to 
test dedicated-purpose pool pumps in house, each manufacturer may have 
to undertake, at most, the following burden inducing activities: (1) 
Construct and maintain a test facility that is capable of testing 
dedicated-purpose pool pumps in compliance with the test procedure, 
including acquisition and calibration of any necessary measurement 
equipment, and (2) conduct the DOE test procedure on two units of each 
covered DPPP model.
    DOE recognizes that many DPPP manufacturers already have DPPP test 
facilities of various configurations and conduct DPPP testing as part 
of an existing manufacturing quality control process, to develop DPPP 
performance information for new and existing products, and to 
participate in voluntary energy efficiency programs or to submit 
information to certain states as part of their energy code. However, 
DOE recognizes that, because such testing is not currently required or 
standardized, testing facilities may vary widely from one DPPP 
manufacturer to another. As

[[Page 64635]]

such, DOE has estimated the maximum potential testing burden associated 
with this TP NOPR, which is associated with a situation where a given 
DPPP manufacturer does not have existing test facilities and would be 
required to construct such facilities to test equipment in accordance 
with any TP final rule. In addition, DOE discusses a more 
representative burden estimate that DOE believes is more indicative of 
the incremental burden manufacturers would likely encounter due to the 
testing requirements proposed in this TP NOPR based on the testing 
capabilities most manufacturers in the industry currently possess. The 
basis for both of these estimates is laid out in the subsequent 
sections in terms of physical equipment and testing costs, labor costs, 
the combined burden for in house testing, and third-party testing 
costs.
a. Estimated Equipment Costs for Testing Dedicated-Purpose Pool Pumps
    In the maximum burden case where a DPPP manufacturer would be 
required to construct a test lab from scratch, manufacturers would be 
required to make significant capital outlays to acquire test equipment. 
The first necessary item for testing a dedicated-purpose pool pump is a 
water reservoir to hold the water that the pump circulates during 
testing. The size of the dedicated-purpose pool pump will directly 
affect the size of the necessary water reservoir. Manufacturers 
provided estimates to DOE on the cost of water reservoirs for a variety 
of sizes. Based on the information provided, DOE estimates the cost of 
a water reservoir to be $2.50 per gallon. Because the dedicated-purpose 
pool pumps vary in size, DOE is using a 1,000 gallon water reservoir as 
a typical size and thus estimates the cost at $2,500 for the water 
reservoir. Water conditioning equipment may also be necessary, in some 
cases, in support of the water reservoir and to ensure that water is 
maintained at the appropriate test temperature (the proposed test 
procedure requires testing with clear water between 50 and 86 [deg]F, 
see section III.D.2.a). DOE estimates the cost of water conditioning 
equipment to be $2,000.
    To complete the DPPP test loop, assorted piping and valves would be 
necessary to circulate water from the reservoir to the pump and 
regulate the flow and head of the water. Multiple diameter pipes, 
valves, and associated fittings may be required to accommodate 
different size dedicated-purpose pool pumps. The total costs for the 
values and piping will vary on pipe diameter as well as the actual 
testing laboratory configuration. DOE estimates a cost of $1,000 for 
the piping and valves necessary to test the dedicated-purpose pool 
pumps within the scope of the proposed test procedure.
    In addition to water conditioning, the proposed DOE test procedure 
also requires the power supply characteristics (i.e., voltage, 
frequency, voltage unbalance, and total harmonic distortion) to be 
maintained within specific values, as described in section III.D.2.e. 
Specifically as stated in Table III.15, the proposed power supply 
requirements must within a few percent of the rated voltage, frequency, 
and voltage harmonic distortion. Also, the total harmonic distortion 
must be limited throughout the test. In some situations, manufacturers 
may be required to acquire power conditioning equipment to ensure the 
power supplied to the DPPP motor or control is within the required 
tolerances. DOE estimated researched power supplies as well as 
manufacturers provided estimates of possible equipment costs which 
ranged from $100 to $20,000 for the proposed power supply. This range 
of equipment includes a variety of equipment specifications; however, 
DOE estimates the cost for power conditioning equipment as $2,000.
    In addition to the physical testing apparatus, the proposed DPPP 
test procedure also contains requirements regarding the characteristics 
and accuracy of the measurement equipment necessary to precisely and 
accurately determine relevant measured quantities. The primary 
measurement equipment includes flow measuring equipment, pressure 
measuring equipment, and power measuring equipment.
    Also, as discussed in section III.D.2.d, test facilities would need 
equipment to measure the flow rate in gallons per minute to verify that 
the pool pump is operating at the applicable load point. Manufacturers 
indicated that, for flow measurement equipment, they utilized magnetic 
flow measurement devices. These magnetic flow measurement devices vary 
in price based on the range of the device to accommodate the 
anticipated flow rate from different sizes of dedicated-purpose pool 
pumps. DOE researched flow measurement devices as well as was provided 
feedback from manufacturers about the typical prices of various sizes. 
DOE's research indicates that as the size of the flow meter increases, 
so does cost. Flow measurement devices ranged from $1,500 to $4,500 per 
DOE's research. DOE estimates a typical flow measurement equipment 
device to be $3,000 for compliance with the proposed TP NOPR.
    Pressure measurement equipment could include a manometer, bourdon 
tube, digital indicator, or a transducer. DOE's research indicates that 
manufacturers use different options. Each of the different measurement 
devices has different prices. DOE estimated the cost of the different 
pressure measurement devices and estimates the average cost to be $950.
    Finally, electrical measurement equipment is necessary to determine 
the input power to the dedicated-purpose pool pump, as measured at the 
input to the motor or controls, if present. There are multiple devices 
that can measure power and energy values. However, DOE proposes 
specific requirements regarding the accuracy and quantities measured 
for such power measuring equipment, as discussed in section III.D.2.f. 
In this case, only specific power analyzers and watt-amp-volt meters 
with the necessary accuracy can measure RMS voltage, RMS current, 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 full scale when measured at the fundamental supply source 
frequency. DOE researched equipment as well as inquired with 
manufacturers about the equipment used and related costs. Based on 
information provided by manufacturers and DOE's own research, a range 
from $2,000 to $30,000 was found for the potential electrical 
measurement equipment. DOE estimates the typical cost for such 
electrical measurement equipment as $4,000.
    Additionally, measurements of speed, time, height, and temperature 
would also be necessary, to perform the test procedure as proposed. 
Speed measurement equipment such as a tachometer, eddy current drag, 
torque meter, or other equipment may be necessary. Based on information 
supplied by manufacturers, DOE estimates the cost of measuring speed at 
$250. To verify that the testing fluid (i.e., clear water) is within 
the specified temperature range, testing facilities will also need to 
measure temperature. DOE estimates a cost of $100 for potential 
temperature measurement devices. Also, as discussed in section 
III.D.2.f, test facilities would need equipment to measure height to 
determine the height above the reference plane for any pressure-
measuring instruments, as well as measure the vertical lift when 
determining the self-priming capability of self-priming and non-self-
priming pool filter pumps. DOE estimates that the cost of any distance 
measuring equipment would be minimal (i.e., less than $10), as a 
standard tape measure

[[Page 64636]]

would satisfy the proposed accuracy requirements (see section III.D.2.f 
and III.E.2).
    Finally, to ensure that all data are taken simultaneously and 
properly recorded, a data acquisition system might also be necessary. 
DOE researched data acquisition systems and determined they ranged 
between $2,000 and $35,000. DOE estimates the typical cost for a data 
acquisition system as $19,000.
    In total, DOE estimates the cost of acquiring all the necessary 
equipment and materials to construct a suitable test apparatus and 
determine applicable quantities to perform the proposed DPPP test 
procedure as approximately $43,800. However, DOE notes that the 
majority of DPPP manufacturers may already have existing testing 
capabilities to verify equipment performance, as well as certify 
performance under ENERGY STAR, in accordance with applicable state 
laws, or for other applicable DPPP programs.\84\ Therefore, DOE 
believes the previously estimates $43,800 value is a worst-case 
estimate that is not representative of the likely burden manufacturers 
would actually be likely to incur. Specifically, many manufacturers 
indicated to DOE that they already possessed equipment necessary to 
comply with such programs, including test apparatus and suitable 
equipment to measure temperature, time, speed, pressure, flow, and a 
data acquisition system to compile such measurements. Manufacturers 
indicated that they also currently used a variety of power measuring 
devices, some of which would be compliant with the proposed accuracy 
and measurement requirements proposed in this NOPR (section III.D.2.f) 
and some of which would not. Similarly, manufacturers did not indicate 
use of any power conditioning equipment, which may or may not be 
required based on the existing power quality conditions of the test 
facility.\85\ DOE finds it that, at most, current DPPP manufacturers 
would be required to acquire new power measurement equipment and power 
conditioning equipment to comply with DOE's proposed testing 
requirements, for a total cost of $15,000. However, DOE notes that, for 
some manufacturers, the cost could be a low as $0.
---------------------------------------------------------------------------

    \84\ See section III.B.1 for a review of applicable DPPP 
regulatory and voluntary programs.
    \85\ Many test facilities may inherently meet DOE's proposed 
requirements for power supply characteristics, as DOE proposed to 
use values that are likely to be widely available on the national 
electrical grid. See section III.D.2.e.
---------------------------------------------------------------------------

    DOE requests comment on the capital cost burden associated with the 
proposed test procedure, including the estimated capabilities of 
current manufacturers.
    Specifically, DOE requests comment on the estimate that the likely 
capital cost burden incurred by existing DPPP manufacturers would be 
between $0 and $15,000.
b. Labor Associated With Testing Dedicated-Purpose Pool Pumps
    DOE also estimates the related labor necessary to complete the 
proposed test procedure. DOE estimates the cost of labor using the 
median hourly wage of $43.40.\86\ Including fringe benefits, which are 
estimated to be nominally 30 percent of total compensation, the total 
hourly cost to an employer is estimated to be $56.42.\87\ DOE received 
information from manufacturers about the typical time required to test 
a dedicated-purpose pool pump for ANSI/NSF-50, ENERGY STAR, and other 
applicable programs with similar testing requirements proposed in this 
NOPR.\88\ Although a small sample size, the time for testing ranged 
from a few hours per test to an entire day when completing testing for 
multiple programs. The longer testing is a function of the 
stabilization requirements of ENERGY STAR that are greater than DOE has 
proposed in this document. The expected testing time for this proposed 
test procedure is between 3 to 5 hours depending on the number of 
speeds and corresponding number of test points. Using the labor rate 
established in the previous section, the total cost of labor for 
testing a dedicated-purpose pool pump ranges from $350 and $500 per 
basic model.\89\
---------------------------------------------------------------------------

    \86\ United States Department of Labor. Bureau of Labor 
Statistics Occupational Outlook Handbook. Washington, DC. http://www.bls.gov/oes/current/oes_nat.htm. Last accessed May 26, 2016.
    \87\ 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.
    \88\ See section III.B.1 for a discussion of applicable programs 
and the similarity to DOE's proposed test procedure.
    \89\ The costs are $225 and $450 respectively per unit, but the 
minimum number of units is 2 per basic model, therefore, costs are 
expressed in terms of basic model.
---------------------------------------------------------------------------

    DOE requests comment on the estimated time to complete a test of a 
single DPPP unit under the proposed test procedure.
c. Estimated Testing Cost per Manufacturer
    To assess the total cost of complying with the proposed DPPP test 
procedure and rating applicable DPPP models, DOE estimates the combined 
capital and labor costs for DPPP manufacturers. As discussed above in 
section IV.B.1.a, based on DOE's analysis, the equipment necessary 
could total a maximum of $43,800, but would more likely range between 
$0 and $15,000. For the purpose of estimating a ``typical'' estimated 
burden associated with testing under the proposed test procedure, per 
manufacturer, DOE uses the $15,000 figure.
    However, DOE notes that this capital cost would be distributed 
across all the units being tested by a given manufacturer. DOE 
researched the market and estimates 30 models of dedicated-purpose pool 
pumps produced by manufacturers. Manufacturers may also be able to 
group these dedicated-purpose pool pumps into basic models, so the 
actual quantity of basic models per manufacturer could be less than 
this range. (See section III.A.8 for a discussion of DOE's basic model 
definition and how individual models can be treated under such a 
definition.) To account for this, DOE analyzed DOE's DPPP database to 
determine the likely number of basic models a typical DPPP manufacturer 
would certify, based on the grouping provisions allowed for in the DPPP 
basic model definition. DOE estimates, based on similarities between 
some individual models in DOE's DPPP database, that DPPP manufacturers 
would each typically rate 15 unique basic models. Therefore, DOE 
distributed the estimated capital cost of $15,000 across the 
estimated15 basic models to determine the typical capital cost per DPPP 
model.
    To determine the total burden of the proposed DPPP test procedure, 
DOE also estimates the labor cost per DPPP model. DOE previously 
estimated the labor cost as a range between $350 and $500 per basic 
model. However, as discussed in section III.I.1, manufacturers would be 
required to test at least two units of each basic model to determine 
the applicable ratings for that model. Thus, at least two tests would 
be required per basic model, resulting in approximately 30 tests per 
manufacturer, to rate all of their DPPP models that would be subject to 
the proposed test procedure. If a given DPPP manufacturer makes 15 
basic models and tests 2 units, the resultant testing costs, including 
both capital expenditures and labor to conduct the test, are between 
$1,000 and $1,350 per DPPP basic model depending on the total labor 
time, number of speeds, and number of basic models.
    DOE also recognizes that not all manufacturers have in-house 
testing facilities and may opt for independent third-party testing. 
This may be the

[[Page 64637]]

most cost-effective solution for manufacturers with few basic models, 
so as to avoid all the capital cost burden associated with acquiring a 
test facility consistent with DOE's proposed testing requirements. 
Therefore, to estimate burden for these manufacturers, as well as 
verify the reasonableness of DOE's in-house testing estimate, DOE 
researched potential testing costs from independent testing labs. Based 
on input from third-party labs and manufacturers, DOE estimates the 
cost of third-party testing to be $4,000 per unit, or $11,000 per 
model.
2. Review of DPPP Manufacturers
    To determine the likely testing burden for applicable DPPP 
manufacturers, DOE researched the current DPPP industry to identify 
manufacturers of dedicated-purpose pool pumps and estimate the number 
of DPPP models that would be subject to the proposed test procedure for 
those manufacturers.
    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 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.
    DOE notes that the Regulatory Flexibility Act requires analysis of, 
in particular, ``small entities'' that might be affected by the 
proposed rule. For the DPPP manufacturing industry, the Small Business 
Administration (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 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 proposed rule, 
DOE then 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 has identified 5 companies that 
would be considered small manufacturers by the SBA definition in terms 
of the number of employees.
    DOE requests comment regarding the size of DPPP manufacturing 
entities and the number of manufacturing businesses represented by this 
market.
3. Summary
    The final cost per manufacturer primarily depends on the number of 
basic models the manufacturer sells. However, based on the previous 
assumptions and analysis, DOE estimates that DPPP manufacturers would, 
on average, have 15 DPPP basic models that would require rating under 
the proposed test procedure and sampling plan requirements, resulting 
in an initial testing cost of $1,350 per manufacturer per basic model 
assuming that the manufacturers only had to purchase power supplies and 
electrical measurement devices that meet the proposed requirements. In 
addition, DOE notes that these are not annual costs because DOE does 
not require manufacturers to retest a basic model annually. If a 
manufacturer modifies a basic model in a way that makes it more 
efficient or less consumptive or introduces a new basic model, new 
testing is required to determine the representative performance of the 
new or modified model. DOE estimates that manufacturers, on average, 
introduce new or significantly modified DPPP models approximately once 
every 5 years. Therefore, after the initial testing to newly certify 
all existing DPPP models, DOE estimates manufacturers would incur 
ongoing testing costs (primarily labor because the equipment because 
the manufacturer would have the equipment) of approximately $350 to 
$500 (depending on the number of speeds tested) per new basic model 
introduced or significantly modified.\90\
---------------------------------------------------------------------------

    \90\ DOE assumes that the new equipment for testing is 
disaggregated across the initial estimated 15 basic models. 
Therefore, any new tests would be related to the labor required to 
complete the test.
---------------------------------------------------------------------------

    DOE requests comment on its assertion that manufacturers typically 
introduce or significantly modify basic models once every 5 years.
    As discussed in section IV.B.2, DOE analyzed the industry for DPPP 
manufacturing to determine all manufacturers of dedicated-purpose pool 
pumps covered in this TP NOPR. Analysis of the industry determined that 
45 percent of all DPPP manufacturers could be classified as small 
businesses according to SBA classification guidelines. Although 45 
percent of the market could be considered a significant portion of the 
overall industry, DOE estimates that the proposed testing would only 
incur $1,350 in initial testing costs and $350 on an ongoing basis to 
certify new or modified models. These estimates are based on the 
assumption that many DPPP manufacturers, including small manufacturers, 
are already participating in compulsory or voluntary programs that 
require similar testing and, therefore, the burden associated with 
testing and rating dedicated-purpose pool pumps within the scope of the 
proposed test procedure would be similar to the testing currently 
conducted by manufacturers subject to this rulemaking.
    However, DOE reiterates that the proposed test procedure and 
sampling requirements would 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 proposed test procedure. That is, any 
burden associated with testing dedicated-purpose pool pumps in 
accordance with the requirements of this test procedure would not be 
required until the promulgation of any ECS final rule for dedicated-
purpose pool pumps, as discussed in section II. DOE would analyze the 
effect of the combined burden associated with both the test procedure 
and ECS rulemakings in the manufacturer impact analysis performed as 
part of any ECS rulemaking establishing standards for this equipment.
    Based on the criteria outlined earlier, DOE certifies that the 
proposed test procedure 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 SBA for review under 5 U.S.C. 605(b).
    DOE requests comment on the testing currently conducted by DPPP 
manufacturers, including the magnitude of incremental changes necessary 
to transform current test facilities to conduct the DOE test procedure 
as proposed in this NOPR.
    DOE requests comment on the tentative conclusion that the proposed 
test procedure will not have a

[[Page 64638]]

significant economic impact on a substantial number of small entities.

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 proposed 
in this NOPR are similar to those established for general pumps in the 
January 2016 general pumps TP 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.I.1), certification 
requirements would not need to be performed until the compliance date 
of any final rule establishing energy conservation standards for 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 Paperwork Reduction Act (PRA), unless that 
collection of information displays a currently valid OMB control 
number.

D. Review Under the National Environmental Policy Act of 1969

    In this proposed rule, DOE proposes definitions and a test 
procedure for dedicated-purpose pool pumps that it expects will be used 
to develop and implement future energy conservation standards for this 
equipment. 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 
proposed rule considers a test procedure for a pump that is largely 
based upon industry test procedures and methodologies resulting from a 
negotiated rulemaking, so it would not affect the amount, quality or 
distribution of energy usage, and, therefore, would 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 has examined this proposed rule and has 
determined that it would 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 proposed 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, 
the proposed 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 proposed regulatory action likely to result 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

[[Page 64639]]

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 
proposed 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 rule would 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 would 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 proposed rule under the OMB and DOE guidelines and has 
concluded that it is 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 proposed 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 proposed significant energy action, 
the agency must give a detailed statement of any adverse effects on 
energy supply, distribution, or use should the proposal be implemented, 
and of reasonable alternatives to the action and their expected 
benefits on energy supply, distribution, and use.
    DOE has tentatively concluded that today's regulatory action, which 
would prescribe the test procedure for measuring the energy efficiency 
of dedicated-purpose pool pumps, is not a significant regulatory action 
under Executive Order 12866 and is not likely to 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 on the 
proposed rule.

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 notice of 
proposed rulemaking 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 proposed rule incorporates testing methods contained in the 
following commercial standards:
    (1) UL 1081, (``ANSI/UL 1081-2014''), ``Standard for Swimming Pool 
Pumps, Filters, and Chlorinators,'' 6th Edition, January 29, 2008, 
including revisions through March 18, 2014.
    (2) National Electrical Manufacturers Association (NEMA) MG-1-2014, 
``Motors and Generators,'' 2014, section 1.19, ``Polyphase Motors''; 
section 10..34, ``Basis of Horsepower Rating''; section 10.62, 
``Horsepower, Speed, and Voltage Ratings''; section 12.30, ``Test 
Methods''; section 12.35, ``Locked-Rotor Current of 3-Phase 60-Hz Small 
and Medium Squirrel-Cage Induction Motors Rated at 230 Volts''; section 
12.37, ``Torque Characteristics of Polyphase Small Motors''; 12.38, 
``Locked-Rotor Torque of Single-Speed Polyphase Squirrel-Cage Medium 
Motors with Continuous Ratings''; section 12.39, ``Breakdown Torque of 
Single-speed Polyphase Squirrel-Cage Medium Motors with Continuous 
Ratings''; and section 12.40, ``Pull-Up Torque of Single-Speed 
Polyphase Squirrel-Cage Medium Motors with Continuous Ratings.''
    (3) 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 proposed 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 
40.6.5.5.2, ``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 
[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 
proposes only to modify the existing incorporation by reference to 
extend the applicability of certain sections to the new appendix B to

[[Page 64640]]

subpart Y that would contain the DPPP test procedure.
    Although this proposed test procedure is not exclusively based on 
these industry testing standards, some components of the DOE test 
procedure would adopt definitions, test parameters, measurement 
techniques, and additional calculations from them without amendment. 
The Department has evaluated these standards and is unable to conclude 
whether they fully comply with the requirements of section 32(b) of the 
FEAA, (i.e., that they were developed in a manner that fully provides 
for public participation, comment, and review). DOE will consult with 
the Attorney General and the Chairman of the FTC concerning the impact 
of these test procedures on competition, prior to prescribing a final 
rule.

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. Materials Incorporated by Reference

    In this NOPR, DOE proposes to newly incorporate by reference two 
industry standards related to pump nomenclature, definitions, and test 
specifications, which DOE has referenced in its proposed definitions 
and test procedure.
    Specifically, the definitions proposed in this NOPR, 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 1081-2014''), ``Standard for Swimming Pool 
Pumps, Filters, and Chlorinators,'' 6th Edition, January 29, 2008, 
including revisions through March 18, 2014.
    (2) National Electrical Manufacturers Association (NEMA) MG-1-2014, 
``Motors and Generators,'' 2014, section 1.19, ``Polyphase Motors''; 
section 10..34, ``Basis of Horsepower Rating''; section 10.62, 
``Horsepower, Speed, and Voltage Ratings''; section 12.30, ``Test 
Methods''; section 12.35, ``Locked-Rotor Current of 3-Phase 60-Hz Small 
and Medium Squirrel-Cage Induction Motors Rated at 230 Volts''; section 
12.37, ``Torque Characteristics of Polyphase Small Motors''; 12.38, 
``Locked-Rotor Torque of Single-Speed Polyphase Squirrel-Cage Medium 
Motors with Continuous Ratings''; section 12.39, ``Breakdown Torque of 
Single-speed Polyphase Squirrel-Cage Medium Motors with Continuous 
Ratings''; section 12.40, ``Pull-Up Torque of Single-Speed Polyphase 
Squirrel-Cage Medium Motors with Continuous Ratings.''
    (3) 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.''
    DOE proposes to incorporate by reference UL 1081-2014 into 10 CFR 
431.462 and NSF/ANSI 50-2015 into 10 CFR 431.462 and appendix B of 
subpart Y. UL 1081-2014 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.
    In addition, the test procedure proposed in this NOPR incorporates 
by reference the 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 
40.6.5.5.2, ``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 
[deg]F)''; and Appendix B, ``Reporting of test results (normative)'';) 
to establish procedures for measuring relevant pump performance 
parameters. HI 40.6-2014, with certain exceptions, is IBR approved for 
Sec.  431.464, and appendix A to subpart Y of part 431. 10 CFR 431.463. 
DOE proposes to incorporate by reference HI 40.6-2014, with certain 
additional exceptions, into a new appendix B to subpart Y that would 
contain the DPPP test procedure. HI 40.6-2014 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, proposed in this NOPR (see 
sections III.B.2 and III.F).
    Additionally, these standards can be obtained from the 
organizations directly at the following addresses:
    Hydraulic Institute, located at 6 Campus Drive, First Floor North, 
Parsippany, NJ, 07054, (973) 267-9700, or by visiting www.pumps.org.
    UL, 333 Pfingsten Road, Northbrook, IL 60062, (847) 272-8800, or by 
visiting http://ul.com.
    NEMA, 1300 North 17th Street, Suite 900, Rosslyn, VA 22209, (703) 
841-3200, or by visiting www.nema.org.
    NSF International, 789 N. Dixboro Road, Ann Arbor, MI 48105, (743) 
769-8010, or by visiting www.nsf.org.

V. Public Participation

A. Attendance at Public Meeting

    The time, date and location of the public meeting are listed in the 
DATES and ADDRESSES sections at the beginning of this document. If you 
plan to attend the public meeting, please notify the Appliance and 
Equipment Standards staff at (202) 586-6636 or 
[email protected].
    Please note that foreign nationals visiting DOE Headquarters are 
subject to advance security screening procedures, which require advance 
notice prior to attendance at the public meeting. If a foreign national 
wishes to participate in the public meeting, please inform DOE of this 
fact as soon as possible by contacting Ms. Regina Washington at (202) 
586-1214 or by email: [email protected] so that the 
necessary procedures can be completed.
    DOE requires visitors to have laptops and other devices, such as 
tablets, checked upon entry into the building. Any person wishing to 
bring these devices into the Forrestal Building will be required to 
obtain a property pass. Visitors should avoid bringing these devices, 
or allow an extra 45 minutes to check in. Please report to the 
visitor's desk to have devices checked before proceeding through 
security.
    Due to the REAL ID Act implemented by the Department of Homeland 
Security (DHS), there have been recent changes regarding identification 
(ID) requirements for individuals wishing to enter Federal buildings 
from specific states and U.S. territories. Driver's licenses from the 
following states or territory will not be accepted for building entry, 
and one of the alternate forms of ID listed below will be required. DHS 
has determined that regular driver's licenses (and ID cards) from the 
following jurisdictions are not acceptable for entry into DOE 
facilities: Alaska, American Samoa, Arizona, Louisiana, Maine, 
Massachusetts, Minnesota, New York, Oklahoma, and Washington. 
Acceptable alternate forms of Photo-ID include: U.S. Passport or 
Passport Card; an Enhanced Driver's License or Enhanced ID-Card issued 
by

[[Page 64641]]

the states of Minnesota, New York or Washington (Enhanced licenses 
issued by these states are clearly marked Enhanced or Enhanced Driver's 
License); a military ID or other Federal government-issued Photo-ID 
card.
    In addition, you can attend the public meeting via webinar. Webinar 
registration information, participant instructions, and information 
about the capabilities available to webinar participants will be 
published on DOE's Web site https://www1.eere.energy.gov/buildings/appliance_standards/standards.aspx?productid=67. Participants are 
responsible for ensuring their systems are compatible with the webinar 
software.

B. Procedure for Submitting Prepared General Statements for 
Distribution

    Any person who has plans to present a prepared general statement 
may request that copies of his or her statement be made available at 
the public meeting. Such persons may submit requests, along with an 
advance electronic copy of their statement in PDF (preferred), 
Microsoft Word or Excel, WordPerfect, or text (ASCII) file format, to 
the appropriate address shown in the ADDRESSES section at the beginning 
of this document. The request and advance copy of statements must be 
received at least 1 week before the public meeting and may be emailed, 
hand-delivered, or sent by mail. DOE prefers to receive requests and 
advance copies via email. Please include a telephone number to enable 
DOE staff to make a follow-up contact, if needed.

C. Conduct of Public Meeting

    DOE will designate a DOE official to preside at the public meeting 
and may also use a professional facilitator to aid discussion. The 
meeting will not be a judicial or evidentiary-type public hearing, but 
DOE will conduct it in accordance with section 336 of EPCA (42 U.S.C. 
6306). A court reporter will be present to record the proceedings and 
prepare a transcript. DOE reserves the right to schedule the order of 
presentations and to establish the procedures governing the conduct of 
the public meeting. After the public meeting and until the end of the 
comment period, interested parties may submit further comments on the 
proceedings and any aspect of the rulemaking.
    The public meeting will be conducted in an informal, conference 
style. DOE will present summaries of comments received before the 
public meeting, allow time for prepared general statements by 
participants, and encourage all interested parties to share their views 
on issues affecting this rulemaking. Each participant will be allowed 
to make a general statement (within time limits determined by DOE), 
before the discussion of specific topics. DOE will permit, as time 
permits, other participants to comment briefly on any general 
statements.
    At the end of all prepared statements on a topic, DOE will permit 
participants to clarify their statements briefly and comment on 
statements made by others. Participants should be prepared to answer 
questions by DOE and by other participants concerning these issues. DOE 
representatives may also ask questions of participants concerning other 
matters relevant to this rulemaking. The official conducting the public 
meeting will accept additional comments or questions from those 
attending, as time permits. The presiding official will announce any 
further procedural rules or modification of the above procedures that 
may be needed for the proper conduct of the public meeting.
    A transcript of the public meeting will be included in the docket, 
which can be viewed as described in the Docket section at the beginning 
of this document. In addition, any person may buy a copy of the 
transcript from the transcribing reporter.

D. Submission of Comments

    DOE will accept comments, data, and information regarding this 
proposed rule before or after the public meeting, but no later than the 
date provided in the DATES section at the beginning of this proposed 
rule. Interested parties may submit comments using any of the methods 
described in the ADDRESSES section at the beginning of this document.
    Submitting comments via regulations.gov. The regulations.gov Web 
page will require you to provide your name and contact information. 
Your contact information will be viewable to DOE Building Technologies 
staff only. Your contact information will not be publicly viewable 
except for your first and last names, organization name (if any), and 
submitter representative name (if any). If your comment is not 
processed properly because of technical difficulties, DOE will use this 
information to contact you. If DOE cannot read your comment due to 
technical difficulties and cannot contact you for clarification, DOE 
may not be able to consider your comment.
    However, your contact information will be publicly viewable if you 
include it in the comment or in any documents attached to your comment. 
Any information that you do not want to be publicly viewable should not 
be included in your comment, nor in any document attached to your 
comment. Persons viewing comments will see only first and last names, 
organization names, correspondence containing comments, and any 
documents submitted with the comments.
    Do not submit to regulations.gov information for which disclosure 
is restricted by statute, such as trade secrets and commercial or 
financial information (hereinafter referred to as Confidential Business 
Information (CBI)). Comments submitted through regulations.gov cannot 
be claimed as CBI. Comments received through the Web site will waive 
any CBI claims for the information submitted. For information on 
submitting CBI, see the Confidential Business Information section.
    DOE processes submissions made through regulations.gov before 
posting. Normally, comments will be posted within a few days of being 
submitted. However, if large volumes of comments are being processed 
simultaneously, your comment may not be viewable for up to several 
weeks. Please keep the comment tracking number that regulations.gov 
provides after you have successfully uploaded your comment.
    Submitting comments via email, hand delivery, or mail. Comments and 
documents submitted via email, hand delivery, or mail also will be 
posted to regulations.gov. If you do not want your personal contact 
information to be publicly viewable, do not include it in your comment 
or any accompanying documents. Instead, provide your contact 
information on a cover letter. Include your first and last names, email 
address, telephone number, and optional mailing address. The cover 
letter will not be publicly viewable as long as it does not include any 
comments.
    Include contact information each time you submit comments, data, 
documents, and other information to DOE. If you submit via mail or hand 
delivery, please provide all items on a CD, if feasible. It is not 
necessary to submit printed copies. No facsimiles (faxes) will be 
accepted.
    Comments, data, and other information submitted to DOE 
electronically should be provided in PDF (preferred), Microsoft Word or 
Excel, WordPerfect, or text (ASCII) file format. Provide documents that 
are not secured, written in English and free of any defects or viruses. 
Documents should not contain special characters or any form of 
encryption and, if possible, they should carry the electronic signature 
of the author.

[[Page 64642]]

    Campaign form letters. Please submit campaign form letters by the 
originating organization in batches of between 50 to 500 form letters 
per PDF or as one form letter with a list of supporters' names compiled 
into one or more PDFs. This reduces comment processing and posting 
time.
    Confidential Business Information. According to 10 CFR 1004.11, any 
person submitting information that he or she believes to be 
confidential and exempt by law from public disclosure should submit via 
email, postal mail, or hand delivery two well-marked copies: One copy 
of the document marked confidential including all the information 
commented to be confidential, and one copy of the document marked non-
confidential with the information commented to be confidential deleted. 
Submit these documents via email or on a CD, if feasible. DOE will make 
its own determination about the confidential status of the information 
and treat it according to its determination.
    Factors of interest to DOE when evaluating requests to treat 
submitted information as confidential include: (1) A description of the 
items; (2) whether and why such items are customarily treated as 
confidential within the industry; (3) whether the information is 
generally known by or available from other sources; (4) whether the 
information has previously been made available to others without 
obligation concerning its confidentiality; (5) an explanation of the 
competitive injury to the submitting person which would result from 
public disclosure; (6) when such information might lose its 
confidential character due to the passage of time; and (7) why 
disclosure of the information would be contrary to the public interest.
    It is DOE's policy that all comments may be included in the public 
docket, without change and as received, including any personal 
information provided in the comments (except information deemed to be 
exempt from public disclosure).

E. Issues on Which DOE Seeks Comment

    Although DOE welcomes comments on any aspect of this proposal, DOE 
is particularly interested in receiving comments and views of 
interested parties concerning the following issues:
    (1) DOE requests comment on whether all dedicated-purpose pool 
pumps are dry rotor.
    (2) DOE requests comment on the proposed definition for 
``dedicated-purpose pool pump.''
    (3) DOE requests comment on the proposed definition of ``pool 
filter pump.''
    (4) DOE requests comment on the proposed definitions of ``basket 
strainer,'' ``removable cartridge filter,'' and ``sand filter.''
    (5) DOE requests comment on the proposed amendments to the 
definition of self-priming pump.
    (6) DOE requests comment on the proposed definitions for ``self-
priming pool filter pump'' and ``non-self-priming pool filter pump.''
    (7) DOE requests comment on the proposed definition of ``integral 
cartridge-filter pool pump'' and ``integral sand-filter pool pump.''
    (8) DOE requests comment on the proposed definition of ``waterfall 
pump.''
    (9) DOE requests comment on the proposed definition of ``pressure 
cleaner booster pump'' and whether DOE should consider making ANSI/UL 
1081-2014 a required label instead of illustrative in order to 
distinguish pressure cleaner booster pumps.
    (10) DOE requests comment on the proposed definitions for 
``storable electric spa pump,'' ``rigid electric spa pump,'' and 
``integral.''
    (11) DOE requests comment on the proposed scope of applicability of 
the DPPP test procedure.
    (12) DOE requests comments on these proposed definitions for 
single-speed, two-speed, multi-speed, and variable-speed dedicated-
purpose pool pump.
    (13) DOE also requests comment on any additional criteria or 
specificity that might be required in the definitions to effectively 
differentiate the various speed configurations for different DPPP 
varieties.
    (14) DOE requests comment on the proposed definition for freeze 
protection controls.
    (15) DOE requests comment on the proposed definition of ``basic 
model.''
    (16) DOE requests comment on any characteristics unique to 
dedicated-purpose pool pumps that may necessitate modifications to the 
proposed definition of ``basic model.''
    (17) DOE requests comment on its proposal to adopt WEF as the 
metric to characterize the energy use of certain dedicated-purpose pool 
pumps and on the proposed equation for WEF.
    (18) DOE requests comment on its proposal to test self-priming and 
non-self-priming pool filter pumps at load points specified along curve 
C to determine the WEF for such pumps.
    (19) DOE requests comment on its proposal to test single-speed pool 
filter pumps at a single load point corresponding to the maximum speed 
for that pump on curve C.
    (20) DOE requests comment on the proposed load points 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).
    (21) DOE requests comment on the load points for two-speed pool 
filter pumps with a low-speed setting that is higher or lower than one-
half of the maximum speed setting.
    (22) DOE requests comment on the availability and any examples of 
two-speed pool filter pumps with a low-speed setting that are not 
exactly one-half of the maximum speed setting.
    (23) DOE requests comment on the proposal to specify the high speed 
and flow point for multi-speed and variable-speed pool filter pumps 
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.
    (24) DOE requests 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.
    (25) DOE requests comment on the proposed low flow points for small 
and large multi-speed and variable-speed pool filter pumps.
    (26) DOE requests comment on the treatment of multi-speed pumps and 
proposal to test multi-speed pumps at the lowest available speed that 
can meet the specified flow with a head point that is at or above curve 
C for low-flow (Qlow) test point, similar to the high-flow (Qhigh) test 
point.
    (27) DOE requests comment on the proposal to use a weight of 1.0 
for single-speed pool filter pumps and weights of 0.20 for the high 
flow point and 0.80 for the low flow point for two-speed, multi-speed, 
and variable-speed pool filter pumps.
    (28) DOE requests comment on the applicability of the two-speed, 
multi-speed, and variable-speed pool filter pump test methods to only 
those pool filter pumps that meet the proposed definitions of two-
speed, multi-speed, and variable-speed dedicated-purpose pool pump.
    (29) DOE requests comment on additionally limiting the 
applicability of the two-speed test procedure to only those two-speed 
self-priming pool filter

[[Page 64643]]

pumps that are greater than or equal to 0.711 rated hydraulic 
horsepower and less than 2.5 rated hydraulic horsepower and are 
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 capability but is unable to 
operate without the presence of such a pool pump control.
    (30) DOE requests comment on any additional criteria or 
requirements that may be necessary to ensure that the test procedure 
for two-speed, multi-speed, and variable-speed dedicated-purpose pool 
pumps is representative of their likely energy performance in the 
field.
    (31) DOE requests comment on the proposed load point for waterfall 
pumps of 17.0 feet of head at the maximum speed of the pump and the 
proposed weight of 1.0 for the single load point.
    (32) DOE requests comment on the proposed load point for pressure 
cleaner booster pumps of 10.0 gpm at the minimum speed that results in 
a head value at or above 60.0 feet and the proposed weight of 1.0 for 
the single load point.
    (33) DOE requests comment and information regarding if this test 
point is achievable for all pressure cleaner booster pumps and, if not, 
how such pumps should be tested.
    (34) DOE requests comment on the proposal to incorporate by 
reference HI 40.6-2014 into the proposed appendix B to subpart Y, with 
the exceptions, modifications, and additions listed in section III.D.2.
    (35) DOE requests comment on its proposal to not incorporate by 
reference sections 40.6.4.1, 40.6.4.2, 40.6.5.3, 40.6.5.5.2, 40.6.6.1, 
A.7, and Appendix B of HI 40.6-2014 as part of the DOE test procedure 
for dedicated-purpose pool pumps.
    (36) DOE requests comment on the proposal to clarify the 
applicability of sections 40.6.5.5.1, section 40.6.6.2, and section 
40.6.6.3, of HI 40.6-2014.
    (37) DOE requests comment on its proposal to clarify the 
calculation of pump hydraulic horsepower to reference a unit conversion 
of 3,956 instead of 3,960.
    (38) DOE requests comment on the proposal to specify that at least 
two unique data points must be used to determine stabilization and to 
allow damping devices, as described in section 40.6.3.2.2, but with 
integration limited to less than or equal to the data collection 
interval.
    (39) DOE requests comment on its proposal to require that the 
tested flow rate at each load point must be within 2.5 
percent of the flow rate at the specified load point self-priming pool 
filter pumps, non-self-priming pool filter pumps, and pressure cleaner 
booster pumps.
    (40) DOE requests comment on its proposal to require that the 
tested head point at each load point must be within 2.5 
percent of the head point at the specified load point for waterfall 
pumps.
    (41) DOE requests comments on the proposed voltage, frequency, 
voltage unbalance, and total harmonic distortion requirements that 
would have to be satisfied when performing the DPPP test procedure for 
dedicated-purpose pool pumps.
    (42) Specifically, DOE requests comments on whether these 
tolerances can be achieved in existing DPPP test laboratories, or 
whether specialized power supplies or power conditioning equipment 
would be required.
    (43) DOE requests comment on its proposal to require measurement of 
the input power to the dedicated-purpose pool pump using electrical 
measurement equipment 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 
full scale when measured at the fundamental supply source frequency.
    (44) DOE requests comment on the proposal to require instruments 
for measuring distance that are accurate to and have a resolution of at 
least 0.1 inch.
    (45) DOE requests comment on the proposal to use raw measured data 
to calculate WEF as well as the proposal to round WEF to the nearest 
0.1 kgal/kWh.
    (46) DOE requests comment on the proposal to use rated hydraulic 
horsepower as the primary standardized metric to describe DPPP ``size'' 
with regard to specifying the test procedure and energy conservation 
standards for dedicated-purpose pool pumps.
    (47) DOE requests comment on the proposal to determine the 
representative value of rated hydraulic horsepower as the mean of the 
measured rated hydraulic horsepower values for each tested unit.
    (48) DOE requests comment on the proposed definitions and testing 
methods for ``dedicated-purpose pool pump nominal motor horsepower,'' 
``dedicated-purpose pool pump service factor,'' and ``dedicated-purpose 
pool pump motor total horsepower.''
    (49) DOE seeks comment on whether the proposed test methods are 
applicable to all motors distributed in commerce with applicable 
dedicated-purpose pool pumps. If not, DOE requests additional 
information regarding the characteristics of any motors for which these 
procedures would not be applicable and any suggestions regarding 
alternative procedures to determine dedicated-purpose pool pump nominal 
motor horsepower, dedicated-purpose pool pump service factor, and 
dedicated-purpose pool pump motor total horsepower.
    (50) DOE requests comment on the proposal to incorporate by 
reference the test method contained in section C.3 of NSF/ANSI 50 2015, 
with the minor modifications and additions summarized in Table III.20, 
to measure the self-priming capability of pool filter pumps.
    (51) DOE requests comment on the proposed method for determining 
the maximum head of pool filter pumps when differentiating waterfall 
pumps from other pool filter pump varieties.
    (52) DOE requests comment on its proposal to adopt optional 
provisions for the measurement of several other DPPP metrics, including 
EF, pump efficiency, overall (wire-to-water) efficiency, driver power 
input, and/or pump power output (hydraulic horsepower), in addition to 
the required representations.
    (53) DOE requests comment on its belief that HI 40.6-2014 contains 
all the necessary methods to determine pump efficiency, overall (wire-
to-water) efficiency, driver power input, and/or pump power output 
(hydraulic horsepower) and further specification is not necessary.
    (54) DOE requests comment on the proposed optional test procedure 
to determine EF on the specific reference curves A, B, C, and D at any 
available operating speed.
    (55) DOE requests comment on the proposed labeling requirements for 
dedicated-purpose pool pumps.
    (56) DOE requests comment on any other information that should be 
included on the permanent nameplate or in manufacturer literature to 
aid customers of dedicated-purpose pool pumps in proper selection and 
application of DPPP units.
    (57) DOE requests comment on the proposed optional test procedure 
for replacement DPPP motors. Specifically, DOE seeks comment as to any 
additional details that should be addressed in testing a replacement 
DPPP motor with any given DPPP bare

[[Page 64644]]

pump to determine applicable WEF values.
    (58) DOE requests comment on the proposed statistical sampling 
procedures and certification requirements for dedicated-purpose pool 
pumps.
    (59) DOE requests comment on the proposed mandatory and optional 
reporting requirements for certification of dedicated-purpose pool 
pumps.
    (60) DOE requests comment on the proposed enforcement provisions 
for dedicated-purpose pool pumps. Specifically, DOE seeks comment upon 
the applicability of a 5 percent tolerance on rated hydraulic 
horsepower, maximum head, vertical lift, and true priming time for each 
tested DPPP model or if a higher or lower percentage variation would be 
justified.
    (61) DOE requests comment on the proposed verification procedure 
for DPPP freeze protection controls.
    (62) DOE requests comment on the capital cost burden associated 
with the proposed test procedure, including the estimated capabilities 
of current manufacturers.
    (63) DOE requests comment on the estimate that the likely capital 
cost burden incurred by existing DPPP manufacturers would be between $0 
and $15,000.
    (64) DOE requests comment on the estimated time to complete a test 
of a single DPPP unit under the proposed test procedure.
    (65) DOE requests comment regarding the size of DPPP manufacturing 
entities and the number of manufacturing businesses represented by this 
market.
    (66) DOE requests comment on its assertion that manufacturers 
typically introduce or significantly modify basic models once every 5 
years.
    (67) DOE requests comment on the testing currently conducted by 
DPPP manufacturers, including the magnitude of incremental changes 
necessary to transform current test facilities to conduct the DOE test 
procedure as proposed in this NOPR.
    (68) DOE requests comment on the tentative conclusion that the 
proposed test procedure will not have a significant economic impact on 
a substantial number of small entities.

VI. Approval of the Office of the Secretary

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

List of Subjects

10 CFR Part 429

    Administrative practice and procedure, Confidential business 
information, Energy conservation, Imports, 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 August 25, 2016.
Kathleen B. Hogan,
Deputy Assistant Secretary for Energy Efficiency, Energy Efficiency and 
Renewable Energy.
    For the reasons stated in the preamble, DOE proposes to amend 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 429.59 is amended by:
0
a. Revising paragraph (a)(1)(ii); and
0
b. Adding paragraphs (a)(2), (b)(2)(iv) and (v), and (b)(3)(iv).
    The revision and additions read as follows:


Sec.  429.59  Pumps.

    (a) * * *
    (1) * * *
    (ii) Any representation of weighted energy factor or other measure 
of energy efficiency of a basic model must be less than or equal to the 
lower of:
    (A) The mean of the sample, where:
    [GRAPHIC] [TIFF OMITTED] TP20SE16.017
    

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] TP20SE16.018


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 nominal motor horsepower. The 
representative value of dedicated-purpose pool pump nominal motor 
horsepower of a basic model of dedicated-purpose pool pump must be 
determined based on the mean of the breakdown torque, locked-rotor 
torque, pull-up torque, locked-rotor current, slip, speed and/or 
voltage (as applicable) for each tested unit. The tested sample of 
dedicated-purpose pool pump motor units and the tested sample of 
dedicated-purpose pool pump units do not have to be the same units, 
provided they are representative of the same population.
    (iii) 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 
determined based on the representative values of dedicated-purpose pool 
pump service factor and dedicated-purpose pool pump nominal motor 
horsepower.
    (iv) Dedicated-purpose pool pump service factor. The representative 
value of dedicated-purpose pool pump service factor of a basic model of 
dedicated-purpose pool pump must be determined based on the 
representative value of dedicated-purpose pool pump nominal motor 
horsepower.
    (v) True power factor. The representative value of true power 
factor of a basic model of dedicated-purpose pool pump must be 
determined based on the mean of the true power factors for each tested 
unit of dedicated-purpose pool pump motor.
    (b) * * *
    (2) * * *
    (iv) For a dedicated-purpose pool pump subject to the test methods 
prescribed in appendix B to subpart Y of part 431 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, as specified in Table 1 of 
appendix B to subpart Y of part 431; dedicated-purpose pool pump 
nominal motor horsepower in horsepower (hp);

[[Page 64645]]

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), and a statement regarding 
if 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); and, for self-priming and non-self-priming pool filter pumps: 
The vertical lift (in feet) and true priming time (in minutes) for the 
DPPP model and a statement regarding whether the pump is certified with 
NSF/ANSI 50-2015.
    (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 appendix B to subpart Y of part 431 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; and/or energy factor (EFX,s) at 
any desired speed s on any of the optional system curves specified in 
Table 4 of this appendix A, along with the tested speed s in rpm and 
the system curve letter (i.e., A, B, C, or D) associated with each EF 
value.
* * * * *
0
3. Section 429.110 is amended by revising paragraphs (e)(1) and (5) to 
read as follows:


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
4. 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, 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 and the result of the 
measurement(s) will be compared to the values of vertical lift and true 
priming time certified by the manufacturer. The certified values of 
vertical lift and true priming time will be considered valid only if 
the measurement(s) (either the measured vertical lift and true priming 
time for a single unit sample or the average of vertical lift and true 
priming time values, respectively, for a multiple unit sample) is 
within 5 percent of the certified values of vertical lift and true 
priming time.
    (A) If the representative values of vertical lift and true priming 
time are found to be valid, the values of vertical lift and true 
priming time certified by the manufacturer will be used to determine 
the appropriate equipment class and standard level for that basic 
model.
    (B) If the representative values of vertical lift or true priming 
time are found to be invalid, the mean of the values of vertical lift 
and true priming time determined from the tested unit(s)

[[Page 64646]]

will be used to determine the appropriate equipment class 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 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 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) DPPP freeze protection control test method. (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 
(Incorporated by reference, see Sec.  431.463), except that the ambient 
temperature registered by the freeze protection ambient temperature 
sensor will be able to be 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, adjusting 
the actual ambient air temperature of the test chamber, or other means 
that allows the ambient temperature registered by the freeze protection 
temperature sensor to be reliably simulated and varied.
    (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  0.5 [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 (Incorporated by reference, see 
Sec.  431.463). After 5 minutes, decrease the temperature measured by 
the freeze protection temperature control 1  0.5 [deg]F and 
allow the temperature to stabilize. Record the 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, and DPPP rotating speed, if any, after each 
reduction in temperature and subsequent stabilization. If no flow is 
initiated, record zero or no flow. Continue decreasing the temperature 
measured by the freeze protection temperature control 1  
0.5 [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  0.5 
[deg]F has been evaluated (i.e., the end of the 5 minute interval of 38 
[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  0.5 [deg]F and maintain that temperature for at least 30.0 
minutes. Do not modify or interfere with the operation of the DPPP 
freeze protection operating cycle. After at least 30.0 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 [deg]F; if the dedicated-purpose 
pool pump was still circulating water after 30.0 minutes of operation 
at 42.0  0.5 [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 and Sec.  431.134 of this chapter 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
5. 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
6. Section 431.462 is amended by:
0
a. Adding, in alphabetical order, definitions for the terms ``Basket 
strainer,'' ``Dedicated-purpose pool pump,'' ``Dedicated-purpose pool 
pump motor total horsepower,'' ``Dedicated-purpose pool pump nominal 
motor 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,'' ``Self-priming pool filter pump,'' ``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,'' ``Waterfall pump;'' and
0
b. Revising the introductory text and the definitions for ``Basic 
model'' and ``Self-priming 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 2008 version of ANSI/HI 
Standard 1.1-1.2, ``Rotodynamic (Centrifugal) Pumps For Nomenclature 
And Definitions'' (ANSI/HI 1.1-1.2-2008), or the 2008 version of ANSI/
HI Standard 2.1-2.2, ``Rotodynamic (Vertical) Pumps For Nomenclature 
And Definitions'' (ANSI/HI 2.1-2.2-2008). In cases where definitions 
reference design intent, DOE will consider marketing materials, labels

[[Page 64647]]

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 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 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 nameplate ambient rating and motor insulation 
class.
    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 (incorporated by reference, see 
Sec.  431.463).
    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 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).
* * * * *
    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 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.
    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 1081-2014, ``Standard for Swimming 
Pool Pumps, Filters, and Chlorinators.''
* * * * *
    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

[[Page 64648]]

    (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.
    Self-priming pool filter pump means a pool filter pump that is 
certified under NSF/ANSI 50-2015 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.
    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 (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.
    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.
    Variable speed drive means equipment capable of varying the speed 
of the motor.
    Waterfall pump means 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.
0
7. Section 431.463 is amended by:
0
a. Revising paragraph (a);
0
b. Adding paragraph (c)(4);
0
c. Revising paragraph (e); and,
0
d. Adding paragraphs (f) and (g).
    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 below 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.
* * * * *
    (c) * * *
    (4) HI 40.6-2014, (``HI 40.6-2014''), ``Methods for Rotodynamic 
Pump Efficiency Testing,'' copyright 2014, IBR approved for Sec.  
429.59, Sec.  429.134 and appendix B to subpart Y of this part, except 
sections 40.6.4.1, ``Vertically suspended pumps''; 40.6.4.2, 
``Submersible pumps''; 40.6.5.3, ``Test report''; 40.6.5.5.2, ``Speed 
of rotation during test''; 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 [deg]F)''; and Appendix B, 
``Reporting of test results (normative).''
* * * * *
    (e) NEMA. National Electrical Manufacturers Association. 1300 North 
17th Street, Suite 900, Rosslyn, VA 22209, (703) 841-3200. 
www.nema.org.
    (1) NEMA MG-1-2014, (``NEMA MG-1-2014''), ``Motors and 
Generators,'' 2014, IBR approved for Sec.  431.462 and appendix B of 
this part, as follows:
    (i) Section 1.19, ``Polyphase Motors'';
    (ii) Section 10.34, ``Basis of Horsepower Rating'';
    (iii) Section 10.62, ``Horsepower, Speed, and Voltage Ratings'';
    (iv) Section 12.30, ``Test Methods'';
    (v) Section 12.35, ``Locked-Rotor Current of 3-Phase 60-Hz Small 
and Medium Squirrel-Cage Induction Motors Rated at 230 Volts'';
    (vi) Section 12.37, ``Torque Characteristics of Polyphase Small 
Motors'';
    (vii) Section 12.38, ``Locked-Rotor Torque of Single-Speed 
Polyphase Squirrel-Cage Medium Motors with Continuous Ratings'';
    (viii) Section 12.39, ``Breakdown Torque of Single-speed Polyphase 
Squirrel-Cage Medium Motors with Continuous Ratings'';
    (ix) Section 12.40, ``Pull-Up Torque of Single-Speed Polyphase 
Squirrel-Cage Medium Motors with Continuous Ratings.''
    (2) [Reserved]
    (f) NSF. NSF International. 789 N. Dixboro Road, Ann Arbor, MI 
48105, (743) 769-8010. www.nsf.org.
    (1) NSF/ANSI Standard 50-2015, (``NSF/ANSI 50-2015''), ``Equipment 
for Swimming Pools, Spas, Hot Tubs and Other Recreational Water 
Facilities,'' ANSI approved January 26, 2015, Annex C--``Test methods 
for the evaluation of centrifugal pumps,'' Section C.3, ``self-priming 
capability.'' IBR approved for Sec.  431.462 and appendix B of this 
part.
    (2) [Reserved]
    (g) UL. UL, 333 Pfingsten Road, Northbrook, IL 60062, (847) 272-
8800. www.ul.com.
    (1) UL 448, (``ANSI/UL 448-2013''), ``Standard for Safety 
Centrifugal

[[Page 64649]]

Stationary Pumps for Fire-Protection Service,'' 10th Edition, June 8, 
2007, including revisions through July 12, 2013, IBR approved for Sec.  
431.462.
    (2) UL 1081, (``ANSI/UL 1081-2014''), ``Standard for Swimming Pool 
Pumps, Filters, and Chlorinators,'' 6th Edition, January 29, 2008, 
including revisions through March 18, 2014, IBR approved for Sec.  
431.462.
0
8. 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 ranges 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, 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 of this subpart.
0
9. Section 431.466 is revised to read as follows:


Sec.  431.466  Pumps labeling requirements.

    (a) General pumps. For the pumps described in paragraph (a) of 
Sec.  431.464, 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]
    (b) Dedicated-purpose pool pumps. For the pumps described in 
paragraph (b) of Sec.  431.464, 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 of a dedicated-purpose pool pump described in paragraph (b) 
of Sec.  431.464 must be marked clearly with the following information:
    (A) The weighted energy factor (WEF);
    (B) The rated hydraulic horsepower;
    (C) The dedicated-purpose pool pump nominal motor horsepower;
    (D) The dedicated-purpose pool pump service factor; and
    (E) 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. In all instances, 
horsepower may be abbreviated as ``hp.''

[[Page 64650]]

    (A) The WEF, as appropriate to a given pump model, must be 
identified in the form ``WEF __.''
    (B) The rated hydraulic horsepower must be identified in the form 
``rated hydraulic horsepower __.''
    (C) The dedicated-purpose pool pump nominal motor horsepower must 
be identified in one of the following forms: ``dedicated-purpose pool 
pump nominal motor horsepower __,'' ``DPPP nominal motor horsepower 
__,'' or ``nominal motor horsepower __.''
    (D) The dedicated-purpose pool pump service factor must be 
identified in one of the following forms: ``DPPP service factor __,'' 
``service factor __,'' or ``SF __.''
    (E) 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 __,'' or 
``motor total horsepower __.''
    (2) [Reserved]

Appendix A to Subpart Y of Part 431 [Amended]

0
10. In the introductory note to appendix A of subpart Y of part 431, 
remove the reference ``10 CFR 431.464'' add in its place ``10 CFR 
431.464(a)''.
0
11. Add appendix B 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 Consumption of Dedicated-Purpose Pool Pumps

    Note: Starting on [DATE 180 DAYS AFTER DATE OF PUBLICATION OF 
THE FINAL RULE IN THE Federal Register], 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.

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, except section 40.6.4.1, 
``Vertically suspended pumps''; section 40.6.4.2, ``Submersible 
pumps''; section 40.6.5.3, ``Test report''; section 40.6.5.5.2, 
``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 [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 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 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). Round all other reported values to the hundredths 
place.

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 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 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.

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 (incorporated by 
reference, see Sec.  431.463) 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.''
    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 rated values of the motor, and
    (4) Maintain total harmonic distortion below 12 percent 
throughout the test.
    C.3 Tolerances. For self-priming pool filter pumps, non-self-
priming pool filter pumps, and pressure cleaner booster pumps, all 
measured load points must be within 2.5 percent of the 
specified flow rate values on the reference curve. For waterfall 
pumps, all measured load points must be within 2.5 
percent of the specified head value (i.e., 17.0 0.425 
ft) at maximum speed.

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 (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 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 for each DPPP varieties and 
speed configurations:

[[Page 64651]]

[GRAPHIC] [TIFF OMITTED] TP20SE16.019


[[Page 64652]]



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] TP20SE16.020

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 measured in accordance with section 
D.4, in gal/min;
Pi = driver power input to the motor (or controls, if present) at 
each load point i measured in accordance with section D.4 in watts;
i = load point(s), defined uniquely for each DPPP variety and speed 
configuration in section D.4; and
n = number of load point(s), defined uniquely for each DPPP variety 
and speed configuration.
    E.2 Weights. When determining WEF, apply the weights specified in 
Table 2 for the applicable load points, DPPP varieties, and speed 
configurations:

                                        Table 2--Load Point Weights (wi)
----------------------------------------------------------------------------------------------------------------
                                                                                          Load point(s) i
             DPPP varieties                             Speed type               -------------------------------
                                                                                     Low flow        High flow
----------------------------------------------------------------------------------------------------------------
Self-Priming Pool Filter Pumps and Non-   Single................................  ..............             1.0
 Self-Priming Pool Filter Pumps.          Two...................................            0.80            0.20
                                          Multi/Variable........................            0.80            0.20
Waterfall Pumps.........................  Single................................  ..............             1.0
Pressure Cleaner Booster Pump...........  Single................................  ..............             1.0
----------------------------------------------------------------------------------------------------------------

    E.3 Determination of Horsepower and Power Factor Metrics.
    E.3.1 Determine the pump power output at any load point i using the 
following equation:
[GRAPHIC] [TIFF OMITTED] TP20SE16.021

Where:

Pu = the measured pump power output at load point i of the tested 
pump (hp),
Q = the measured flow rate at load point i of the tested pump (gpm),
H = pump total head at load point i of the tested pump (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 Determine the dedicated-purpose pool pump nominal motor 
horsepower according to section E.3.2.1 for single- and three-phase AC 
motors or section E.3.2.2 for DC motors:
    E.3.2.1 For single- and three-phase AC motors, determine the 
dedicated-purpose pool pump nominal motor horsepower as the nominal 
horsepower rating associated with the appropriate values of breakdown 
torque, locked-rotor torque, pull-up torque, locked-rotor current, and 
slip, as applicable for the NEMA motor designation with which the 
dedicated-purpose pool pump is distributed in commerce, as indicated by 
the following sections of NEMA MG-1-2014 (incorporated by reference, 
see section Sec.  431.463) shown in Table 3.

Table 3--Relevant NEMA MG-1 2014 Sections Applicable to Small and Medium
                    Single- and Three-Phase AC Motors
------------------------------------------------------------------------
                                    Single-phase AC     Three-phase AC
      Motor characteristic              motors              motors
------------------------------------------------------------------------
Breakdown Torque................  Section 10.34 of    Section 12.39 of
                                   NEMA MG-            NEMA MG-
                                   1[dash]2014.        1[dash]2014.
Locked-Rotor Torque.............  N/A...............  Section 12.37 or
                                                       12.38 of NEMA MG-
                                                       1[dash]2014.
Pull-up Torque..................  N/A...............  Section 12.40 of
                                                       NEMA MG-
                                                       1[dash]2014.
Locked-rotor current............  N/A...............  Section 12.35.1 of
                                                       NEMA MG-
                                                       1[dash]2014.
Slip............................  N/A...............  Section 1.19.
------------------------------------------------------------------------

    E.3.2.2 For DC motors, determine the nominal motor horsepower 
according to the specifications in section 10.62 of NEMA MG-1-2014 
(incorporated by reference, see section Sec.  431.463).
    E.3.3 Determine the dedicated-purpose pool pump service factor 
according to section E.3.3.1 for single- and three-phase AC motors or 
section E.3.3.2 for DC motors:
    E.3.3.1 For single- and three-phase AC motors, determine the 
dedicated-purpose pool pump service factor based on the requirements of 
section 12.51 of NEMA MG-1-2014 (incorporated by reference, see section 
Sec.  431.463).
    E.3.3.2 For 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 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.3.5 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, over 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] TP20SE16.027

Where:

PFi = true power factor at each load point i, dimensionless;

[[Page 64653]]

Pi = driver power input to the motor (or controls, if present) at 
each load point i measured in accordance with section D.4 in watts;
Vi = voltage at each load point i measured in accordance with 
section D.4, in volts;
Ii = current at each load point i measured in accordance with 
section D.4, in amps; and
i = load point(s), defined uniquely for each DPPP variety and speed 
configuration in section D.4.
    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 self-priming and non-self-priming pool filter pumps that are not 
already certified as self-priming under NSF/ANSI 50-2015 by testing 
such pumps pursuant to section C.3 of appendix C of NSF/ANSI 50-2015, 
``Equipment for Swimming Pools, Spas, Hot Tubs and Other Recreational 
Water Facilities'' (incorporated by reference, see Sec.  431.463), 
except for the modifications and exceptions listed in the following 
section 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,'' state that the ``suction line 
must be essentially as shown in annex C, figure C.1;'' ``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 section, 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);
     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 that 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] TP20SE16.022

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.

    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 Adjust all measurements of head (gauge pressure), flow, and 
water temperature must be taken at the pump suction inlet and all head 
measurements back to the centerline of the pump impeller shaft in 
accordance with section A.3.1.3.1 of HI 40.6 2014 (incorporated by 
reference, see Sec.  431.463).
    F.1.3. All tests must be conducted with clear water, as defined in 
HI 40.6-2014 (incorporated by reference, see Sec.  431.463) and the 
test conditions specified in section C.3.3 of NSF/ANSI 50-2015 
(incorporated by reference, see Sec.  431.463) do not apply.
    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 
(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] TP20SE16.023

Where:

EFX,s = the energy factor on system curve X at speed s in kgal/kWh;
X = one of four possible system curves (A, B, C, or D), as defined 
in section G.2 of this appendix;
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.2 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 
Table 4:

         Table 4--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.3 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 DPPP model, according to the testing 
and calculations described in

[[Page 64654]]

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 DPPP 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.

[FR Doc. 2016-21310 Filed 9-19-16; 8:45 am]
 BILLING CODE 6450-01-P