[Federal Register Volume 60, Number 56 (Thursday, March 23, 1995)]
[Proposed Rules]
[Pages 15330-15363]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-4048]




[[Page 15329]]

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Part II





Department of Energy





_______________________________________________________________________



Office of Energy Efficiency and Renewable Energy



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10 CFR Part 430



Test Procedures for Water Heaters; Kitchen Ranges, Ovens, and Microwave 
Ovens; and Clothes Washers; and Reporting Requirements for Clothes 
Washers, Clothes Dryers and Dishwashers; Proposed Rule

  Federal Register / Vol. 60, No. 56 / Thursday, March 23, 1995 / 
Proposed Rules   
[[Page 15330]] 

DEPARTMENT OF ENERGY

Office of Energy Efficiency and Renewable Energy

10 CFR Part 430

[Docket No. EE-RM-94-230]


Energy Conservation Program for Consumer Products: Test 
Procedures for Water Heaters; Kitchen Ranges, Ovens, and Microwave 
Ovens; and Clothes Washers; and Reporting Requirements for Clothes 
Washers, Clothes Dryers, and Dishwashers

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

ACTION: Proposed Rule and Public Hearing.

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SUMMARY: The Energy Policy and Conservation Act, as amended, requires 
the Department of Energy (DOE or the Department) to administer an 
energy conservation program for certain major household appliances and 
commercial equipment. Among other program elements, the Act requires 
that standard methods of testing be prescribed for each covered 
product. The purposes of this Proposed Rulemaking are to: propose 
amendments to clarify the water heater; kitchen range, oven, and 
microwave; and clothes washer test procedures, announce the 
Department's intentions to incorporate by reference test procedures 
adopted by the International Electrotechnical Commission (IEC), and 
request data, comments, and information regarding their applicability 
and workability. Today's amendments of the test procedures are not 
expected to alter the minimum energy conservation standards currently 
in effect, or those being proposed in the Eight Products Notice of 
Proposed Rulemaking, published March 4, 1994 (59 FR 10464).

DATES: Written comments in response to this notice must be received by 
August 31, 1995.
    Oral views, data, and arguments may be presented at the public 
hearing to be held in Washington, DC, beginning at 9:30 a.m. on July 
12, 1995. Requests to speak at the hearing must be received by the 
Department no later than 4 p.m., June 28, 1995. Ten (10) copies of 
statements to be given at the public hearing must be received by the 
Department no later than 4 p.m., July 5, 1995.

ADDRESSES: Written comments, and requests to speak at the public 
hearing are to be submitted to: U.S. Department of Energy, Office of 
Energy Efficiency and Renewable Energy, Hearings and Dockets, Test 
Procedures for Water Heaters; Kitchen Ranges, Ovens, and Microwave 
Ovens; and Clothes Washers; and Reporting Requirements for Clothes 
Washers, Clothes Dryers, and Dishwashers,'' Docket No. EE-RM-94-230, 
Forrestal Building, 1000 Independence Avenue, SW., Washington, DC 
20585.
    The hearing will be held at the U.S. Department of Energy, 
Forrestal Building, Room 1E-245, 1000 Independence Avenue, SW., 
Washington, DC.
    Requests may be hand delivered between the hours of 8 a.m. and 4 
p.m., Monday through Friday, except Federal holidays. Requests should 
be labeled, ``Test Procedures for Water Heaters; Kitchen Ranges, Ovens, 
and Microwave Ovens; and Clothes Washers; and Reporting Requirements 
for Clothes Washers, Clothes Dryers, and Dishwashers,'' (Docket No. EE-
RM-94-230), both on the document and on the envelope.
    Copies of the transcript of the public hearing and public comments 
received may be read and/or photocopied at the Department of Energy 
Freedom of Information Reading Room, U.S. Department of Energy, 
Forrestal Building, Room 1E-190, 1000 Independence Avenue, SW., 
Washington, DC 20585, (202) 586-6020 between the hours of 9 a.m. and 4 
p.m., Monday through Friday, except Federal holidays.
    The Department will incorporate by reference test standards from 
the International Electrotechnical Commission upon publication of this 
rule as final. These standards are listed below:

    International Electrotechnical Commission Publication 705, and 
Amendment 2-1993, ``Methods for Measuring the Performance of 
Microwave Ovens for Household and Similar Purposes,'' Section 4, 
Paragraph 12 ``Microwave Power Output Measurement,'' Paragraph 13 
``Electrical Power Output Measurement,'' and Paragraph 14 
``Efficiency.''

    Copies of these standards may be viewed at the Department of Energy 
Freedom of Information Reading Room at the address stated above. Copies 
of the International Electrotechnical Commission Publication can be 
obtained from the American National Standards Institute, 11 West 42nd 
Street, New York, New York 10036, (212) 642-4936.
    For more information concerning public participation in this 
rulemaking proceeding, see Section XI, ``Public Comment Procedures,'' 
of the SUPPLEMENTARY INFORMATION section.

FOR FURTHER INFORMATION CONTACT:

William W. Hui--Water Heaters (202) 586-9145
Ingrid M. Watson--Ranges, Ovens and Microwaves (202) 586-8119
Marc LaFrance--Clothes Washers and Dryers, and Dishwashers (202) 586-
8423
U.S. Department of Energy, Energy Efficiency and Renewable Energy,Mail 
Station EE-431, Forrestal Building, 1000 Independence Avenue, SW., 
Washington, DC. 20585
Eugene Margolis, Esq., U.S. Department of Energy, Office of General 
Counsel, Mail Station GC-72, Forrestal Building, 1000 Independence 
Avenue, SW., Washington, D.C. 20585, (202) 586-9507.

SUPPLEMENTARY INFORMATION:

I. Introduction

A. Authority

    Part B of Title III of the Energy Policy and Conservation Act, Pub. 
L. 94-163, as amended by the National Energy Conservation Policy Act, 
Pub. L. 95-619, the National Appliance Energy Conservation Act of 1987, 
Pub. L. 100-12, the National Appliance Energy Conservation Amendments 
of 1988, Pub. L. 100-357, and the Energy Policy Act of 1992, Pub. L. 
102-486, created the Energy Conservation Program for Consumer Products 
other than Automobiles (Program).1 The products currently subject 
to this Program (often referred to hereafter as ``covered products'') 
include water heaters; kitchen ranges, ovens, and microwaves; and 
clothes washers, the subjects of today's notice.

    \1\Part B of Title III of Energy Policy and Conservation Act, as 
amended, is referred to in this final rule as ``EPCA'' or the 
``Act.'' Part B of Title III is codified at 42 U.S.C. 6291-6309.
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    Under the Act, the Program consists essentially of three parts: 
Testing, labeling, and the Federal energy conservation standards. The 
Department, in consultation with the National Institute of Standards 
and Technology (formerly the National Bureau of Standards), is required 
to amend or establish new test procedures as appropriate for each of 
the covered products. EPCA, section 323. The purpose of the test 
procedures is to produce test results which measure energy efficiency, 
energy use, water use (in the case of showerheads, faucets, water 
closets and urinals), or estimated annual operating cost of a covered 
product during a representative average use cycle or period of use, and 
must not be unduly burdensome to conduct. EPCA, section 323(b)(3). A 
test [[Page 15331]] procedure is not required if DOE determines by rule 
that one cannot be developed. EPCA, section 323(d)(1). One hundred and 
eighty days after a test procedure for a product is adopted, no 
manufacturer may make representations with respect to energy use, 
energy efficiency or water use of such product, or the cost of energy 
consumed by such product, except as reflected in tests conducted 
according to the DOE procedure. EPCA, section 323(c)(2). Test 
procedures appear at 10 CFR part 430, subpart B.
    However, the 180-day period referred to in section 323(c)(2) may be 
extended for a period of up to an additional 180 days if the Secretary 
determines that the requirements of section 323(c)(2) would impose 
undue burden. EPCA, section 323(c)(3).
    Section 323(e) of the Act requires DOE to determine to what extent, 
if any, a proposed test procedure would alter the measured energy 
efficiency, measured energy use or measured water use of any covered 
product as determined under the existing test procedure. If DOE 
determines that an amended test procedure would alter the measured 
efficiency or measured use of a covered product, DOE is required to 
amend the applicable energy conservation standard accordingly. In 
determining the amended energy conservation standard, DOE is required 
to measure the energy efficiency or energy use of a representative 
sample of covered products that minimally comply with the existing 
standard. The average efficiency of these representative samples, 
tested using the amended test procedure, constitutes the amended 
standard. EPCA, section 323(e)(2).

B. Background

    Today's notice proposes to modify the test procedures for water 
heaters; kitchen ranges, ovens, and microwave ovens; and clothes 
washers as follows:
    (1) Water heaters.
    (a) Revision of subpart B, appendix E.
    1. Modify the test procedures to address electric and oil-fired 
instantaneous water heaters.
    2. Include testing of storage-type water heaters having rated 
storage capacities less than 20 gallons (76 liters).
    3. Revise the method used to calculate the first hour rating of 
storage-type water heaters.
    4. Amend the extant definition for heat pump water heater, and add 
new definitions for heat pump water heater storage tank, add-on heat 
pump water heater, integral heat pump water heater, and solar water 
heater.
    (2) Kitchen ranges, ovens, and microwaves.
    (a) Revision of subpart B, section 430.22 to include test procedure 
changes.
    (b) Revision of subpart B, appendix I.
    1. Revise the annual useful energy output to reflect changes in the 
annual usage of ranges, ovens, cooktops, and microwave ovens.
    2. Add definition for ``IEC 705.''
    3. Eliminate the requirement to use a standard continuous flow 
calorimeter.
    4. Incorporate by reference the International Electrotechnical 
Commission Publication 705 Amendment 2-1993, section 4, Paragraphs 12-
14.
    5. Include the clock energy in the calculation of annual energy 
consumption for microwave ovens.
    6. Revise section 2.8 ``Test Beakers'' replace with new section 2.8 
``Microwave Oven Test Load.''
    7. Revise section 2.9.3.4 ``Microwave Oven and Test Load 
Temperature,'' replace with new section 2.9.3.4 ``Test Load 
Temperature.''
    8. Eliminate section 4.3 ``Conventional Range,'' and section 4.5 
``Microwave/Conventional Range.'' These two sections have been replaced 
with a new section 4.3 ``Combined Components'' in this proposed rule.
    (3) Clothes washers.
    (a) Revision of subpart B, Sec. 430.22 to include test procedure 
changes and to revise the number of representative average-use cycles 
per year.
    (b) Revision of subpart B, appendix J.
    1. General test procedure clarification which includes the 
following:
     Add new definitions for the following terms: 
thermostatically controlled valves, agitator, top-loader-vertical-axis 
clothes washer, and top-loader-horizontal-axis clothes washer.
     Delete the requirement to disconnect all lighting systems 
which consume more than 10 watts during the clothes washer test cycle.
     Introduce a new section, section 2.11 ``Agitation and Spin 
Speed Settings.''
     Delete reference to AHAM and AHAM procedures.
     Clarify the procedure for capacity testing.
     Clarify the requirements for ``maximum fill'' testing.
    2. Incorporation of test procedure changes from approved Waivers to 
address the following issues:
     Add new definitions for the following terms: nonwater-
heating clothes washers and water-heating clothes washers.
     Extend coverage for washers that operate at 120/208Y and 
120/240 volts.
     Extend testing and performance coverage to water-heating 
clothes washers.
     Extend coverage for clothes washers that have infinite/
variable temperature selection capability.
    3. Addition of optional water consumption and extraction procedures 
which include the following:
     Add new definitions for the following terms: modified 
energy factor, moisture removal energy and water consumption factor.
     Add optional test procedures to determine the above 
values.
    (4) Addition to subpart F, Sec. 430.62, to add reporting 
requirements for energy factors for clothes washers, clothes dryers, 
and dishwashers.
    In addition, metric units of measurements have been included in the 
three test procedures (English values are given followed by their 
appropriate International System of Units in parentheses).

II. Discussion

A. Water Heater Test Procedure

    Today's proposed amendments to the water heater test procedure 
include: Revisions to make the water heater test procedure applicable 
to electric and oil-fired instantaneous water heaters; coverage for 
testing storage-type water heaters with rated storage capacities less 
than 20 gallons (76 liters); revision of the first hour rating for 
storage-type water heaters; amendment to the extant definition for heat 
pump water heater; and addition of new definitions for heat pump water 
heater storage tank, add-on heat pump water heater, integral heat pump 
water heater, and solar water heater.
    The Department does not believe any of these changes would alter 
the energy conservation standards for water heaters currently in place, 
and requests comments on the impact of these changes, if any. In 
addition, DOE requests comments on the adequateness of the test 
procedure for heat pump water heaters regarding the use of backup 
electric resistance element(s). To the Department's knowledge, most 
heat pump water heaters are capable of meeting the current test draw 
requirements, and therefore, the backup electric resistance element(s) 
are often unnecessary, and are seldom activated. However, the current 
test setup and parameters may not represent operating conditions 
requiring backup electric resistance elements to activate. This is 
dependent on a number of factors, i.e., temperature settings, draw 
volume and rate, etc. Therefore, DOE is interested in receiving 
comments on the test [[Page 15332]] procedure for heat pump water 
heaters regarding the use of backup electric resistance element(s).
    Concurrently, the Department is conducting a rulemaking, 
independent of today's notice, to propose revised minimum energy 
conservation standards for eight consumer products, including water 
heaters. (59 FR 10464, March 4, 1994).
1. Electric and Oil-Fired Instantaneous Water Heaters
    The current test procedure does not address testing of electric and 
oil-fired instantaneous water heaters in that they are not defined in 
the test procedure. The Department, therefore, proposes to include 
definitions for these two types of instantaneous water heaters, and to 
amend the existing language to include the testing of them. Definitions 
for storage-type water heaters are also modified to differentiate these 
types from the instantaneous-type water heaters. As a result, oil-fired 
and electric instantaneous water heaters will be subject to the 
applicable minimum energy conservation standards of 0.59-(0.0019  x  
rated storage volume in gallons) for oil-fired water heaters and 0.93-
(0.00132  x  rated storage volume in gallons) for electric water 
heaters, respectively. For electric and oil fired instantaneous water 
heaters, the rated storage volume may be zero. In today's proposed 
notice, the Department requests comments and data regarding the 
appropriateness of adding electric and oil-fired instantaneous water 
heaters to the test procedure and subjecting them to the respective 
energy conservation standards. See appendix E to subpart B of Title 10 
CFR part 430, sections 1.8 and 5.2.
2. Storage-type Water Heaters Having Rated Storage Capacities Less Than 
20 Gallons (76 liters)
    In a letter to the Department, dated July 17, 1991, the Gas 
Appliance Manufacturer Association (GAMA) stated that storage-type 
water heaters having capacities less than 20 gallons (76 liters) are 
covered by the National Appliance Energy Conservation Act of 1987. The 
current test procedure does not cover storage-type water heaters having 
rated storage capacities less than 20 gallons (76 liters) and, 
therefore, those water heaters are not subject to the minimum 
efficiency standards. In order to correct this, GAMA requested that the 
test procedure be revised. DOE proposes to provide coverage for 
storage-type water heaters of less than 20 gallons (76 liters).
    With regard to conducting the 24-hour simulated use test on water 
heaters having rated storage capacities less than 20 gallons (76 
liters), the Department proposes to include the applicable draw 
schedule accepted by the water heater industry. (See American National 
Standards Institute/American Society of Heating, Refrigerating and Air-
Conditioning Engineers (ASHRAE) Standard 118.2-1993: Method of Testing 
for Rated Residential Water Heaters.) The total volume withdrawn shall 
be 24 gallons (91 liters) for units having rated storage capacities 
greater than or equal to 10 gallons (38 liters), but less than 20 
gallons (76 liters). The total volume withdrawn shall be 9 gallons (34 
liters) for units having rated storage capacities less than 10 gallons 
(38 liters). The draw rate shall be 1.00.25 gallons per 
minute (3.80.95 liters per minute) for all units having 
rated storage capacities less than 20 gallons (76 liters). The 
Department requests comments and data regarding any impact on a 
manufacturer(s) as a result of extending coverage of the existing 
minimum energy efficiency standards to storage-type water heaters of 
less than 20 gallons (76 liters). See appendix E to subpart B of Title 
10 CFR part 430, sections 1.11, 5.1.4.1, and 5.1.5.
3. First Hour Rating for Storage-type Water Heaters
    Water heaters have historically been selected based on rated 
storage volume. The rate at which the water heater produces hot water, 
and whether the water heater uses a lone or multiple heat source, 
however, is also important when selecting a water heater. For example, 
a smaller electric water heater having two 4.5-kilowatt elements may 
provide more hot water over a given time interval than a larger 
electric water heater having a single 3.8-kilowatt element. The first 
hour rating seeks to account for the effect of storage capacity, 
heating rate, and the number of heat sources on the water heater's 
ability to provide hot water. Ideally, the consumer will use first hour 
rating to initially identify water heaters that will meet their hot 
water supply needs. Once the field has been narrowed based on this 
need, the consumer will then use energy factor, annual operating cost, 
first cost, warranty information, reputation of manufacturer, etc., in 
determining which water heater to select.
    The first hour rating is not used in computing the efficiency 
(i.e., energy factor) of water heaters, but is used by the Federal 
Trade Commission for presenting size ranges in the labeling program for 
water heaters. It was hoped that this measure would gain recognition as 
a sizing criterion for consumers in selecting water heaters. As a 
result, the Department has been conducting a continuous effort to 
improve the first hour rating method in rulemakings for water heaters. 
However, the concept of what the first hour rating should represent 
(i.e., a balance between storage capacity, recovery rate, and mixing 
characteristics) and how to measure it accurately has proven to be a 
difficult task. Each attempt at establishing a first hour rating test 
has led to difficulties (repeatability problem with the 1989 proposal 
(54 FR 1890, January 17, 1989), and a low estimate of hot water 
availability for certain water heaters by the 1990 final rule. (55 FR 
42162, October 17, 1990).) For example, in a October 15, 1991, letter 
from GAMA to DOE, GAMA stated that ``Gas Appliance Manufacturers 
Association members have results establishing first hour ratings in the 
range of 70 to 75 gallons for 120 gallon models. The calculated first 
hour rating is significantly less than the amount of water drawn during 
the first draw.'' This problem with the October 17, 1990, current test 
method is most evident for large tanks with one heating element because 
of the greater weighing given by the test procedure to recovery rate 
relative to storage volume.
    To correct the problem of understating hot water production cited 
by GAMA, the Department requested NIST to evaluate a proposal 
recommended by GAMA in its October 15, 1991, letter to DOE. GAMA's 
recommendation would prorate the final draw of the 1990 first hour 
rating test with respect to a ratio of elapsed times. NIST summarized 
the advantages and disadvantages of GAMA's recommendation. The major 
advantages are: The first hour rating would always be greater than or 
equal to the first draw volume and retesting for FTC labeling may be 
unnecessary if the needed additional data was collected. The major 
disadvantages are: The rating would represent a volume of hot water 
that is greater than or equal to the maximum volume of hot water that 
can be delivered in an hour (overstating), and it may not differentiate 
single-element from two-element electric water heaters (recovery 
capabilities unrecognized). The Department, therefore, concludes that 
the disadvantages of GAMA's recommendation outweigh the advantages and 
rejects this proposal.
    The Department requested NIST to conduct a second study to correct 
the problem of understating hot water production. NIST recommended that 
a revised version of the 1989 test method be proposed. NIST stated its 
recommendation will correct the understating problem cited by GAMA in 
[[Page 15333]] the October 15, 1991, letter, and in addition, will 
minimize the aforementioned repeatability problem. The Department 
concurs and today proposes a revised first hour rating method for 
storage tank-type (including heat pump) water heaters. Section 5.1.4. 
Included in the proposed first hour rating are: Revisions to the test 
method for storage tank-type water heaters, hot and cold water mixing 
characteristics, and the criterion for initiating successive draws when 
conducting a first hour rating test on heat pump water heaters that use 
supplemental resistive heating.
    In regard to storage tank-type water heaters, for draws initiated 
prior to one hour (as a result of a thermostat cut-out), the maximum 
outlet temperature shall be determined for each draw and used for 
determining when to terminate that draw, i.e., at T*max,i 
-25 deg.F, where i corresponds to the draw number. If a recovery is 
still in progress at one hour, the draw imposed to remove any stored 
``hot'' water shall be terminated based on the cut-off temperature used 
for the previous draw (T*max,n-1 -25 deg.F). In addition, for 
draws imposed at one hour, the first hour rating shall be the sum of: 
All the withdrawn volumes and the final withdrawn volume, where the 
final withdrawn volume is multiplied by the following temperature 
ratio: (T*del,n-T*min,n-1) /(T*del,n-1 -T*min,n-1). 
The subscripts n and n-1 are used to indicate the final draw and the 
next-to-last draw, respectively, while T*min,n-1 designates the 
water temperature at which the next-to-last draw was terminated 
(T*min,n-1 = T*max,n-1 -25 deg.F). For all other draw 
volumes, no temperature ratio adjustment factor shall be used.
    The Department notes that a temperature ratio can and has been used 
in the past to compensate for the amount of mixing that occurs between 
the stored hot water and the entering make-up water during a draw. The 
greater the volume of make-up water mixed into the outlet stream (while 
still maintaining an outlet temperature above the criterion of ``hot'' 
water), the greater the first hour rating. The amount of mixing is 
typically small and repeatable for designs that introduce make-up water 
near the bottom of the tank. However, if a water heater uses a 
thermally compensating dip tube (first discussed in the February 8, 
1984, Proposed Rulemaking, 49 FR 4870), or an internal mixing valve, 
substantial mixing, and thus, a higher and unrealistic first hour 
rating could occur. At present, DOE is not aware of any currently 
manufactured water heaters which contain these features. Therefore, DOE 
is not employing a temperature ratio correction to handle mixing 
effects. The Department requests comments and data concerning the 
appropriateness of today's proposal relative to thermally compensating 
dip tubes, internal mixing valves, or any other mechanism used to 
increase the amount of mixing of stored hot water and make-up water 
during a draw.
    The Department also notes that with a multiple draw first hour 
rating test, like the one proposed today, a temperature ratio can be 
used to compensate for the effect of the test tolerances allowed for 
the thermostat setting(s) [5 deg.F 
(2.8 deg.C)], and for the make-up water temperature 
[2 deg.F (1.1 deg.C)]. These test tolerances 
affect the time required for the water heater to recover from a hot 
water draw. For example, recovery time is quickest if the tank 
thermostat(s) is set to 130 deg.F (54.4 deg.C), and the make-up water 
is set at 60 deg.F (15.6 deg.C). Recovery time is slowest for settings 
at 140 deg.F (60 deg.C) and 56 deg.F (13.3 deg.C). To avoid the 
potential complication and confusion that would result from an 
additional temperature ratio correction, however, a test tolerance 
correction is not included in today's proposal. The Department 
recognizes that an incentive exists to conduct the first hour rating 
test with the tank thermostat set at or near 130 deg.F (54.4 deg.C), 
and with the make-up water at or near 60 deg.F (15.6 deg.C).
    Preliminary studies conducted by NIST estimate today's proposed 
test method is successful in minimizing the repeatability problem to 
within  5 percent relative to the 1989 proposal. The 
Department today requests comments and data concerning this 
repeatability issue.
    In addition, the Department proposes to modify the existing first 
hour rating definition so that it differentiates between storage and 
instantaneous water heaters. Section 1.5.
    In regard to heat pump water heaters that use supplemental 
resistive heating, a draw is currently initiated only after all power 
to the water heater has been reduced, which corresponds to the case 
where the compressor has cycled off and any resistive heating has 
ceased. The Department today proposes a revision to the criterion used 
to initiate successive draws so that credit is given if this type of 
water heater provides a partial recovery. The proposed revision would 
require a draw to be initiated after the thermostat controlling the 
upper or lone resistive element, or the compressor is satisfied, 
whichever occurs first. However, this criterion shall be applicable 
only if the water located vertically above the resistive element 
thermostat or compressor thermostat is heated to 135  
5 deg.F (57.2  2.8 deg.C) when cut-off occurs. The 
Department requests comments and data on the appropriateness and 
workability of the proposed changes to the test method for heat pump 
water heaters that use supplemental resistive heating. See appendix E 
to subpart B of Title 10 CFR part 430, section 5.1.4.2.
4. Definitions for Heat Pump Water Heaters, Add-on Heat Pump Water 
Heaters, Integral Heat Pump Water Heaters, Solar Water Heaters, and 
Heat Pump Water Heater Storage Tanks
    The Department proposes to amend the extant definition for heat 
pump water heaters (section 1.11.3); add definitions of integral heat 
pump water heater (section 1.11.3.a), add-on heat pump water heaters 
(section 1.11.3.b), and solar water heaters (section 1.11.5) to 
differentiate these types of water heaters; and add definition of a 
heat pump water heater storage tank, i.e., the tank to be used with an 
add-on heat pump water heater (section 1.6).

B. Kitchen Ranges, Ovens and Microwave Ovens Test Procedures

    The test procedures for kitchen ranges, ovens and microwave ovens 
have remained substantially unchanged since the final rule was 
published in the Federal Register on May 10, 1978 (43 FR 20120). It was 
amended on April 13, 1979, by prescribing that natural gas or propane 
would be the test gas used with gas ranges and ovens (44 FR 22418).
    Today's proposed amendment will change the annual useful cooking 
energy output for kitchen ranges, ovens and microwave ovens to make it 
representative of current United States cooking product usage. In 
addition, the proposed test procedure will no longer contain annual 
energy consumption calculations for ranges (cooktop and oven combined), 
or other combined appliances (multiple conventional ovens, microwave 
and conventional range combined). The Department is proposing to 
calculate the annual energy consumption of combined appliances as the 
sum of the annual energy consumption of each individual component of 
the unit. Section 4.3. The Department is proposing to incorporate by 
reference the International Electrotechnical Commission (IEC), 
Publication 705, and Amendment 2-1993, ``Methods for Measuring the 
Performance of Microwave Ovens for Household and Similar Purposes,'' 
Section 4, Paragraph 12 ``Microwave Power Output Measurement,'' 
Paragraph 13 ``Electrical Power Output Measurement,'' and Paragraph 14 
[[Page 15334]] ``Efficiency.'' DOE has not proposed test procedures for 
grill and griddle cook tops; the Department would consider adding test 
procedures for these products if such exist.
1. Ovens
    Today's proposed revision to the oven test procedures lowers the 
constant for annual useful cooking energy2 to make it 
representative of current United States cooking trends. This quantity 
is being changed for electric to 35.5 kWh (105.5 MJ) per year from 
47.09 kWh (169.5 MJ) per year; for gas, to 124,200 BTU (131,038 kJ) per 
year from 160,700 BTU (169,547 kJ) per year. Sections 4.1.2.1.1, 
4.1.2.1.2, and 4.1.4. Lawrence Berkeley Laboratory of Berkeley, 
California calculated this constant from several utility studies. These 
results are presented in the Technical Support Document: Energy 
Efficiency Standards for Consumer Products, Volume 2, November 1993, 
DOE/EE-0009, Vol. 2 of 3.

    \2\The annual useful cooking energy is energy input to an oven 
which is transferred to the product being cooked and is a constant 
used to find the annual energy consumption and the energy factor. 
The annual energy consumption is calculated by multiplying the 
constant by the ratio of test energy consumption to the energy used 
to heat the test block. The energy factor is the ratio of the 
constant to the total annual energy consumption.
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    In addition, the Department proposes to eliminate the requirement 
to use a standard continuous flow calorimeter for gas cooking products 
because of the difficulty of locating this product. The instrument to 
be substituted for the standard continuous flow calorimeter is left to 
the discretion of the manufacturer; although, it is required that the 
heating value of natural or propane gas shall be measured with an 
instrument and associated indicator readout device of a maximum error 
no greater than .5 percent of the measured value and a 
resolution of .2 percent or less of the full scale reading 
of the indictor instrument. Section 2.9.4.
2. Cook Tops
    The proposed revision to the cook top test procedures changes the 
constant for annual useful cooking energy3 to make it 
representative of current United States cooking trends. This quantity 
is being lowered for electric to 209 kWh (752.4 MJ) per year from 277.7 
kWh (1000 MJ) per year; for gas, to 732,500 BTU (772,800 kJ) per year 
from 947,500 BTU (999,600 kJ) per year. Lawrence Berkeley Laboratory of 
Berkeley, California calculated this constant from several utility 
studies. These results are presented in the Technical Support Document: 
Energy Efficiency Standards for Consumer Products, Volume 2, November 
1993, DOE/EE-0009, Vol. 2 of 3.

    \3\See footnote 2, supra.
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3. Microwave Ovens
    The proposed changes to the microwave oven test procedures are in 
response to a petition for rulemaking from the Association of Home 
Appliance Manufacturers (AHAM) to use the International 
Electrotechnical Commission standard as the DOE test procedure. The 
current DOE test procedure is based on a 1975 version of the 
International Electrotechnical Commission standard. The Association of 
Home Appliance Manufacturers cited the following deficiencies with the 
DOE test procedure:
    (1) Errors caused by evaporative cooling of the water and heat 
absorption of the water containers during the heating period, and
    (2) Errors caused by the constantly changing sodium chloride 
concentration due to sodium chloride precipitating out of solution.
    The International Electrotechnical Commission issued Publication 
705, and Amendment 2-1993 entitled ``Method for Measuring the 
Performance of Microwave Ovens for Household and Similar Purposes'' in 
1993. The Department asked the National Institute of Standards and 
Technology to perform tests using the 1993 International 
Electrotechnical Commission test procedure. The National Institute of 
Standards and Technology found the test procedure to be acceptable for 
determining power output and efficiency, and recommended that the 
Department of Energy incorporate by reference the International 
Electrotechnical Commission 705 Amendment 2-1993 test procedure for 
these purposes. In computing energy consumption, the International 
Electrotechnical Commission 705 Amendment 2-1993 uses a watt meter and 
timer, ignoring transients, to obtain measurements from which energy 
consumption can be calculated. The Department believes that because of 
start-up transients, the use of a watt-hour meter is more accurate; 
therefore, today's notice includes the use of a watt-hour meter, which 
is not found in the IEC 1993 test procedure, to obtain energy 
consumption.
    The annual useful cooking energy in the extant test procedure is 
34.2 kWh (123 MJ) per year based on 1976 data. In the Eight Product 
rulemaking (59 FR 10464, March 4, 1994), DOE used an annual useful 
cooking energy of 145.8 kWh per year in its analysis. Technical Support 
Document: Energy Efficiency Standards for Consumer Products, Volume 2, 
November 1993, DOE/EE-0009, Vol. 2 of 3, pp. 1-49. After reviewing 
several utility studies and comments, DOE is proposing to change the 
annual useful cooking energy4 from 34.2 kWh (123 MJ) per year to 
77.3 kWh (278.3 MJ) per year. This revision to the annual useful 
cooking energy reflects current U.S. microwave cooking usage. This will 
change the value of Om in the test procedure to 77.3 kWh/yr [143.2 
kWh/yr  x  0.54 = 77.3 kWh/yr] (278.3 MJ/yr). (See appendix I to 
subpart B of title 10 CFR part 430, ``Uniform Test Method for Measuring 
the Energy Consumption of Conventional Ranges, Conventional Cooking 
Tops, Conventional Ovens, and Microwave Ovens,'' sections 4.4.3 and 
4.4.5). Lawrence Berkeley Laboratory of Berkeley, California calculated 
this constant from an average of six utility studies. These studies 
include: Lawrence Berkeley Laboratory, ``Baseline Data for the 
Residential and Development of a Residential Forecasting Database,'' 
LBL 33717, May 1994; American Electric Power, ``Utility Estimates of 
Household Appliance Electricity Consumption,'' 1992; Southern 
California Edison, ``Residential Appliance End-Use Survey,'' 1990 and 
1991; Electric Power Research Institute, ``Residential End-Use Energy 
Consumption: A Survey of Conditional Demand Estimates,'' CU-6487, 
October 1989; and the Sierra Pacific Power Company, ``Integrating EIP 
and HES5 Information for Estimating End-Use Energies,'' March 1988. The 
microwave oven annual energy consumption proposed in today's notice 
also includes the energy used by the clock thus, eliminating the 
necessity to disable the clock during test setup.

    \4\The annual useful cooking energy is energy input to an oven 
which is transferred to the product being cooked and is a constant 
used to find the annual energy consumption and the energy factor. 
The annual energy consumption is calculated by multiplying the 
constant by the ratio of test energy consumption to the energy used 
to heat the test water load. The energy factor is the ratio of the 
constant to the total annual energy consumption.
---------------------------------------------------------------------------

C. Clothes Washer Test Procedure

    The Department published the clothes washer test procedure on 
September 28, 1977, (42 FR 49802) and subsequently on June 29, 1979, 
(44 FR 37938) editorial changes were made. On December 22, 1993, (58 FR 
67710) the Department published a proposed amendment to the clothes 
washer test procedure to address washers which offer a warm rinse lock-
out feature. Today's proposed amendments to the clothes washer test 
procedure will [[Page 15335]] address issues that are independent from 
the temperature selection lock-out feature.
    Today's proposed amendments to the clothes washer test procedure do 
not alter the energy factor of any existing clothes washer that 
minimally complies with the existing efficiency standard.
    In the Advance Notice of Proposed Rulemaking for energy 
conservation standards for clothes washers (59 FR 56423, November 14, 
1994), the Department said it would consider an energy conservation 
standard that includes water extraction. The Department believes that 
mechanical water extraction in a clothes washer is much more cost 
effective and efficient than thermal extraction in a clothes dryer. The 
Department proposes today's procedures and calculations for water 
extraction in clothes washers that would be used in the standards 
rulemaking for consideration of water extraction. Any analysis for 
clothes dryer efficiency standards would account for the impact of 
moisture retention of clothes entering the clothes dryer.
    The Department of Energy today proposes to modify the clothes 
washer test procedure as follows:
    1. Title 10 CFR part 430, subpart B, section 430.22(j).
    The number of representative average-use cycles per year is 
presently 416, based on Proctor and Gamble survey data from 1974-75. 
New Proctor and Gamble survey data has indicated the number of cycles 
consumers use on a yearly basis has decreased. Thus, the Department is 
proposing to revise the representative average-use cycles to 392 per 
year.5 This change lowers annual energy use and annual energy 
cost.

    \5\392 represents the average number of cycles per year from 
1986 through 1994, obtained by P & G survey data and provided to the 
Department via letter dated September 2, 1994.
---------------------------------------------------------------------------

    2. Title 10 CFR part 430, subpart B, appendix J.
    a. General test procedure clarification.
    The Department is proposing to add a definition for ``agitator'' 
(section 1.1). The existing test procedure mentions ``agitator'' but, 
does not provide a definition.
    The Department is proposing to add a definition for 
``thermostatically controlled valves'' (section 1.19). The existing 
test procedure mentions ``thermostatically controlled valves'' but, 
does not provide a definition.
    The Department is proposing to replace the definition for a ``top-
loader'' clothes washer with ``top-loader-horizontal-axis clothes 
washer'' (section 1.21) and ``top-loader-vertical-axis clothes washer'' 
(section 1.22). The Department has become aware of top-loading-
horizontal-axis clothes washers which are readily available in other 
countries. These clothes washers have not yet become available in the 
U.S. market; however, the Department wants to provide nomenclature for 
this type of clothes washer.
    The Department is proposing to delete the following definitions: 
``AHAM'' (section 1.1), ``HWL-1'' (section 1.7) and ``HLW-2EC'' 
(section 1.8). The revised test procedure proposed in today's notice 
does not use these terms.
    The Department is proposing to delete the requirement specified in 
existing test procedure section 2.2: ``Disconnect all console lights or 
other lighting systems on the clothes washer, which do not consume more 
than 10 watts during the clothes washer test cycle.'' The Department 
believes that this requirement is burdensome.
    The Department is proposing to add a new requirement for 
``Agitation and spin speed settings'' (section 2.11). The existing test 
procedure does not specify agitation or spin speed settings. The 
Department is aware of clothes washers which allow selective agitation 
and spin speed settings independent of the normal cycle. Therefore, the 
proposed test procedure specifies requirements for clothes washers with 
these features.
    The Department is proposing to change the symbol for density from 
``d'' to ``.'' The requirement to use the density of water at 
140 deg.F was deleted, so that the density of water at the measured 
temperature will be used.
    The Department is proposing to clarify the requirement for 
``maximum fill'' testing. The Department wants to ensure that testing 
of a clothes washer's energy consumption accounts for the clothes 
washer's maximum fill capability. The Department is proposing to revise 
the test procedure to add ``available on the clothes washer'' after the 
test procedure requirement for ``maximum fill'' (sections 3.2.1.2 and 
3.2.2.1).
    The Department is aware that some clothes washers may have 
similarly labeled wash/rinse temperature selections, i.e., ``automatic 
warm/cold'' and ``warm/cold,'' on the same machine, which actually 
provide different wash/rinse water temperatures. Under this scenario, 
the ``automatic warm/cold'' temperature selection has wash/rinse water 
temperature adjusted through the use of thermostatically controlled 
valves, whereas the ``warm/cold'' temperature selection is 
``traditional,'' in that control of temperature is based on preset 
orifices. The Department believes that these machines are offering 
additional temperature selections. Therefore, instead of developing 
additional Temperature Utilization Factors, the Department is proposing 
to require the use of the temperature selection which results in the 
largest amount of hot water consumption for the energy consumption 
calculations (section 4.1.1.1). The Department believes the use of the 
temperature selection which results in the largest amount of hot water 
consumption is specified in the existing test procedure (``hottest 
setting available'' in section 3.2.2.2). The Department's proposal is 
intended to remove any ambiguity regarding the testing of clothes 
washers equipped with this type of temperature selection. The 
Department welcomes comments regarding this issue.
    b. Test procedure revisions to include changes from approved 
Waivers.
    The Department has granted two Petitions for Waivers to the clothes 
washer test procedure. Both Waivers were for water-heating clothes 
washers. New Harmony Systems Corporation (New Harmony) was issued a 
Waiver (Case No. CW-001) by Decision and Order, published on April 4, 
1994. (59 FR 15710). Asko Incorporated (Asko) was issued a Waiver (Case 
No. CW-002) by Decision and Order, published on April 4, 1994. (59 FR 
15719).
    The Department is proposing definitions for ``nonwater-heating 
clothes washer'' (section 1.11) and ``water-heating clothes washer'' 
(section 1.24) to differentiate different types of clothes washers.
    The Department is proposing to revise the requirements for 
``electrical energy supply'' (section 2.2) to allow for higher voltage 
clothes washers. Furthermore, voltage tolerance has been increased from 
approximately 1.6 percent to 2 percent to reduce testing burden. This 
increase in tolerance will not reduce the accuracy of energy 
consumption testing/reporting.
    The Department is proposing to add procedures for testing water-
heating clothes washers which have variable temperature controls 
(sections 3.2.2 through 3.2.2.4). The Department is proposing to test 
water-heating clothes washers at the coldest and hottest setting 
available on the clothes washer in addition to the existing test 
procedure temperature settings for warm (nominally 100 deg.F) and hot 
(nominally 140 deg.F).
    The proposed temperature use factors for water-heating clothes 
washers are based on revised temperature use factors for a three 
temperature selection nonwater-heating clothes washer. The Department 
believes that the existing TUFs for a three temperature selection 
nonwater-heating clothes washer are [[Page 15336]] appropriate for a 
water-heating clothes washer, except that some consumers will 
occasionally choose to use a temperature setting higher than the 
``hot'' setting since it is available to them. The existing temperature 
use factors for ``cold/cold'' (15 percent), ``warm/warm or warm/cold'' 
(55 percent) and ``hot/warm or hot/cold'' (30 percent) have been split 
into four TUFs, one of 15 percent for the ``coldest'' setting, one of 
55 percent for the ``warm'' setting, one of 25 percent for ``hot'' and 
one of 5 percent for the ``hottest'' setting. The Department does not 
have data regarding the 5 percent value, but is proposing to use it as 
originally proposed by New Harmony. The Department welcomes comments on 
this proposal.
    The Department is proposing tighter tolerances for the supply water 
temperature, and the ``warm'' and ``hot'' settings for water-heating 
clothes washers as compared to nonwater-heating clothes washers. The 
Department is proposing that the supply water temperature be set at ``a 
minimum of 55 deg.F (12.8 deg.C) and a maximum of 60 deg.F 
(15.6 deg.C).'' The ``warm'' temperature shall be set at ``a minimum of 
100 deg.F (37.8 deg.C) and a maximum of 105 deg.F (40.6 deg.C)'' and 
the ``hot'' temperature shall be set at ``a minimum of 140 deg.F 
(60 deg.C) and a maximum of 145 deg.F (62.8 deg.C).'' These tighter 
tolerances are required for water-heating clothes washers to reduce 
variability in energy consumption testing/reporting and to ensure that 
a minimum temperature rise is tested. The temperature tolerance and 
minimum temperature rise issues are unique to a water-heating clothes 
washer because the energy to raise the water temperature is measured 
from electrical consumption versus being calculated as it is for 
nonwater-heating clothes washers.
    Since the issue of machine-controlled water fill capability has 
been raised by the Asko Waiver, the Department wants to provide a 
provision for the possibility of any type of clothes washer having this 
feature. Thus, the Department is proposing to add the definition of 
``machine-controlled water fill capability'' (section 1.7) to the test 
procedure. In addition, the Department is proposing a revision to the 
``top-loader-vertical-axis clothes washer'' section (section 2.8.1) to 
require the use of a test load for clothes washers with a machine-
controlled water fill capability feature. Therefore, a clothes washer 
equipped with machined-controlled water fill capability will be tested 
for maximum fill energy consumption using a 7 pound (3.18 kg) test load 
and for minimum fill energy consumption using a 3 pound (1.36 kg) test 
load. The Department believes that consumers will occasionally wash 
loads which are larger than 7 pounds (3.18 kg) and will also wash loads 
which are smaller than 3 pounds (1.36 kg). This provision will allow 
for testing of clothes washers that may have this feature. The 
Department welcomes comments on this proposed provision.
    c. Water consumption and extraction testing.
    The Department is concerned about water conservation and wishes to 
provide for a procedure to determine the water consumption of clothes 
washers. The Department believes, consistent with the Energy Policy Act 
of 1992, Pub. L. 102-486, that water conservation is important, and a 
need may exist to determine actual water use.
    Therefore, the Department is proposing to add definitions, testing 
procedures, and calculations regarding water use. Additionally, for 
those water or sewage utilities wishing to include particular clothes 
washers in rebate programs, the DOE test procedure would provide a 
standardized means of testing for water consumption.
    The Department is proposing to add a definition for a ``Water 
consumption factor'' (section 1.23). Calculations for the water 
consumption factor are provided in section 4.3. The water consumption 
factor is the ratio of the clothes washer capacity divided by the 
weighted per-cycle water consumption. The weighted per-cycle water 
consumption is the actual weighted volume of water that a particular 
clothes washer consumes. This measurement could be used to estimate 
water consumption on an annual basis. The Department welcomes comments 
on this proposal.
    The Department is concerned about water extraction in the clothes 
washers' final spin. The Department believes that mechanical extraction 
in a clothes washer is more efficient than thermal extraction in a 
clothes dryer. Therefore, the Department wishes to provide for a 
procedure measuring the water extraction in clothes washers. The 
Department is proposing to add a definition for ``moisture removal 
energy'' (section 1.10). Moisture removal energy equals the weight of 
the residual water in the test load at the completion of the clothes 
washer cycle multiplied by the nominal energy needed to remove moisture 
using a representative clothes dryer efficiency. The calculations for 
moisture removal energy are provided in the proposed test procedure 
section 4.2. In today's notice, the Department requests comments, data, 
and other relevant information regarding the definition and calculation 
of the moisture removal energy. The Department is proposing a value of 
0.5 Kwh/lb as the energy efficiency of a representative clothes dryer 
to remove moisture. The Department also is interested in comments as to 
the validity and usage of this value.
    The Department is interested in developing a new energy descriptor, 
called a modified energy factor, which will include moisture removal 
energy, for possible future standard use. This new descriptor will 
provide a means of determining and comparing the entire energy 
consumption of clothes washers. Therefore, the Department is proposing 
to add a definition for ``modified energy factor'' (section 1.9). The 
modified energy factor equals the ratio of the capacity of the clothes 
washer divided by the total energy, which consists of the mechanical, 
hot water and moisture removal energy. The calculations for the 
modified energy factor are provided in the proposed test procedure 
section 4.4. The Department requests comments, data, and other relevant 
information regarding the definition and calculation of this new energy 
descriptor.

D. Reporting Requirements

    The Department is proposing to revise the reporting requirements 
for clothes washers, dishwashers and clothes dryers. The present 
regulations do not require the reporting of the energy factors for 
these products. Prior to the May 14, 1991 final rule for clothes 
washers, dishwashers and clothes dryers, there were no performance 
standards for these products. Now, since there are performance 
standards for these products, the Department is proposing to include 
certification reporting. Section 430.62(a)(2).

III. Environmental Review

    Pursuant to section 7(a) of the Federal Energy Administration Act 
of 1974 (Pub. L. 93-275, 15 U.S.C. 766(a)), a copy of this notice was 
submitted to the Administrator of the Environmental Protection Agency 
for the Administrator's comments concerning the impacts of this 
proposal on the quality of the environment.
    DOE has concluded that this proposed rule falls into a class of 
actions (categorical exclusion A5) that are categorically excluded from 
NEPA review because they would not individually or cumulatively have a 
significant impact on the human environment, as determined by DOE's 
regulations (10 CFR part 1021, Subpart D) implementing the National 
Environmental Policy Act of 1969 (42 U.S.C. 4321, 4331-35, 4341-47 
(1976)). [[Page 15337]] Therefore, this proposed rule does not require 
an environmental impact statement or an environmental assessment 
pursuant to NEPA.

IV. Regulatory Review

    Today's regulatory proposal has been determined not to be a 
``significant regulatory action'' under Executive Order 12866, 
``Regulatory Planning and Review,'' (58 FR 51735, October 4, 1993). 
Accordingly, today's action was not subject to review under the 
Executive Order by the Office of Information and Regulatory Affairs.

V. Regulatory Flexibility Review

    The proposed rule has been reviewed under the Regulatory 
Flexibility Act, Pub. L. 96-354 (42 U.S.C. 601-612) which requires 
preparation of a regulatory flexibility analysis for any regulation 
that will have a significant economic impact on a substantial number of 
small entities, i.e., small businesses and small government 
jurisdictions. The proposed rule affects manufacturers of water 
heaters; kitchen ranges, ovens, and microwave ovens; and clothes 
washers. The test procedures would not have significant economic 
impact, but rather, would provide common testing methods. DOE 
accordingly certifies that the proposed rule would not, if promulgated, 
have a significant economic impact on a substantial number of small 
entities and that preparation of a regulatory flexibility analysis is 
not warranted.

VI. ``Takings'' Assessment Review

    It has been determined pursuant to Executive Order 12630 (52 FR 
8859, March 18, 1988) that this proposed regulation, if adopted, would 
not result in any takings which might require compensation under the 
Fifth Amendment to the United States Constitution.
    The Department believes that test procedures implementing a long-
established statutory mandate in a manner calculated to minimize 
adverse economic impacts does not constitute a ``taking'' of private 
property. Thus, testing under the appliance standards program does not 
invoke the provisions of E.O. 12630.

VII. Federalism Review

    Executive Order 12612 (52 FR 41685, October 30, 1987) requires that 
regulations or rules be reviewed for any substantial direct effects on 
States, on the relationship between the Federal Government and the 
States, or on the distribution of power and responsibilities among 
various levels of Government. If there are sufficient substantial 
direct effects, the Executive Order 12612 requires the preparation of a 
Federalism assessment to be used in decisions by senior policymakers in 
promulgating or implementing the regulation.
    DOE has identified a substantial direct effect that today's 
proposed rule would have on State governments. It would initially 
preempt inconsistent State regulations. However, DOE has concluded that 
such effect is not sufficient to warrant preparation of a federalism 
assessment for the following reason: the Act provided for subsequent 
State petitions for exemption. Thus, a determination as to whether a 
State law prevails must be made on a case-by-case basis using criteria 
set forth in the Act. When DOE receives such a petition, it will then 
be appropriate to consider preparing a federalism assessment consistent 
with the criteria in the Act.

VIII. Review Under Section 32 of the Federal Energy Administration 
Authorization Act

    The test procedure amendments proposed today incorporate the 
International Electrotechnical Commission Publication 705, and 
Amendment 2-1993, ``Methods for Measuring the Performance of Microwave 
Ovens for Household and Similar Purposes,'' section 4, Paragraph 12 
``Microwave Power Output Measurement,'' Paragraph 13 ``Electrical Power 
Output Measurement,'' and Paragraph 14 ``Efficiency'' to determine the 
output power and efficiency for microwave ovens.
    Pursuant to section 301 of the Department of Energy Organization 
Act (Pub. L. 95-91), DOE is required to comply with section 32 of the 
Federal Energy Authorization Act of 1974 (15 U.S.C. 788), which imposes 
certain requirements where a proposed rule contains commercial 
standards or authorizes or requires the use of such standards.
    The findings required of DOE by section 32 of the Act serve to 
alert the public and DOE regarding the use and background of commercial 
standards in a proposal and through the rulemaking process. They allow 
interested persons to make known their views regarding the 
appropriateness of the use of any particular commercial standard in a 
proposed rulemaking.
    DOE has evaluated the promulgation of International 
Electrotechnical Commission Publication 705, and Amendment 2-1993, in 
light of the public participation criteria of section 32(b). The 
Department is unable to conclude whether development of these standards 
fully complied with section 32(b) regarding the manner of public 
participation.
    As required by section 32(c), DOE will consult with the Attorney 
General and the Chairman of the Federal Trade Commission concerning the 
impact of these standards on competition, prior to prescribing final 
test procedures.

IX. Paperwork Reduction Act Review

    No new information or recordkeeping requirements are imposed by 
this rulemaking. Accordingly, no OMB clearance is required under the 
Paperwork Reduction Act (44 U.S.C. 3501 et seq.).

X. Review Under Executive Order 12778

    Section 2 of Executive Order 12778 instructs each agency to adhere 
to certain requirements in promulgating new regulations and reviewing 
existing regulations. These requirements, set forth in sections 2(a) 
and (b)(2), include eliminating drafting errors and needless ambiguity, 
drafting the regulations to minimize litigation, providing clear and 
certain legal standards for affected conduct, and promoting 
simplification and burden reduction. Agencies are also instructed to 
make every reasonable effort to ensure that the regulation specifies 
clearly any preemptive effect, effect on existing Federal law or 
regulation, and retroactive effect; describes any administrative 
proceedings to be available prior to judicial review and any provisions 
for the exhaustion of such administrative proceedings; and defines key 
terms. The DOE certifies that today's proposed rule meets the 
requirements of sections 2(a) and (b)(2) of Executive Order 12778.

XI. Public Comment Procedures

A. Written Comment Procedures

    Interested persons are invited to participate in the rulemaking by 
submitting data, comments, or information with respect to the proposed 
test procedures set forth in this notice to the address indicated at 
the beginning of the notice.
    Comments should be identified both on the envelope and on the 
documents as ``Water Heaters; Kitchen Ranges, Ovens, and Microwave 
Ovens; and Clothes Washers Test Procedures, Docket No. EE-RM-94-230.'' 
Ten (10) copies are requested to be submitted. In addition, the 
Department requests that an electronic copy (3\1/2\'' diskette) of the 
comments on WordPerfectTM 5.1 be provided. All submittal received by 
the date specified at the beginning of this notice will be considered 
by the Department of Energy before final action is taken on the 
proposed amendments. [[Page 15338]] 
    Pursuant to the provisions of 10 CFR 1004.11, any person submitting 
information which he or she believes to be confidential and exempt by 
law from public disclosure should submit one complete copy of the 
document and ten (10) copies, if possible, from which the information 
believed to be confidential has been deleted. The Department of Energy 
will make its own determination with regard to the confidential status 
of the information and treat it according to its determination.
    Factors of interest to DOE when evaluating requests to treat as 
confidential information that has been submitted include: (1) A 
description of the items; (2) an indication as to 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) an indication as to 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.

B. Public Hearing

1. Procedures for Submitting Requests to Speak
    The time and place of the public hearing are indicated at the 
beginning of this notice. The Department of Energy invites any person 
who has an interest in today's proposed rule, or who is a 
representative of a group or class of persons that has an interest in 
the proposed test procedures, to make a written request for an 
opportunity to make an oral presentation. Such requests should be 
directed to the address indicated at the beginning of this notice. 
Requests may be hand delivered to such address between the hours of 8 
a.m. and 4 p.m., Monday through Friday, except Federal holidays. 
Requests should be labeled ``Test Procedure for Water Heaters; Kitchen 
Ranges, Ovens and Microwave Ovens; and Clothes Washers; and Reporting 
Requirements for Clothes Washers, Clothes Dryers, and Dishwashers, 
Docket No. EE-RM-94-230,'' both on the document and on the envelope.
    The person making the request should briefly describe the interest 
concerned and state why he or she, either individually or as a 
representative of a group or class of persons that have such an 
interest, is an appropriate spokesperson, and give a telephone number 
where he or she may be contacted.
    Each person selected to be heard is requested to submit an advance 
copy of their statement prior to the hearing as indicated at the 
beginning of this notice. In the event any persons wishing to testify 
cannot meet this requirement, that person may make alternative 
arrangements with the Office of Hearings and Dockets in advance by so 
indicating in the letter requesting to make an oral presentation.
2. Conduct of Hearing
    The Department of Energy reserves the right to select the persons 
to be heard at the hearing, to schedule the respective presentations, 
and to establish the procedures governing the conduct of the hearing. 
The length of each presentation is limited to twenty (20) minutes.
    A DOE official will be designated to preside at the hearing. The 
hearing will not be a judicial or an evidentiary-type hearing, but will 
be conducted in accordance with 5 U.S.C. 553 and section 336 of the 
Act. At the conclusion of all initial oral statements at each day of 
the hearing, each person who has made an oral statement will be given 
the opportunity to make a rebuttal statement, subject to time 
limitations. The rebuttal statement will be given in the order in which 
the initial statements were made. The official conducting the hearing 
will accept additional comments or questions from those attending, as 
time permits. Any interested person may submit, to the presiding 
official, written questions to be asked of any person making a 
statement at the hearing. The presiding official will determine whether 
the question is relevant, and whether time limitations permit it to be 
presented for answer.
    Any further procedural rules regarding proper conduct of the 
hearing will be announced by the presiding official.
    A transcript of the hearing will be made, and the entire record of 
this rulemaking, including the transcript, will be retained by DOE and 
made available for inspection at the DOE Freedom of Information Reading 
Room, U.S. Department of Energy, Forrestal Building, Room 1E-190, 1000 
Independence Avenue, SW., Washington, DC 20585, (202) 586-6020, between 
the hours of 9 a.m. and 4 p.m., Monday through Friday, except Federal 
holidays. Any person may purchase a copy of the transcript from the 
transcribing reporter.

C. Issues for Public Comment

    The Department of Energy is interested in receiving comments and 
data concerning the accuracy and workability of these test procedures. 
Also, the Department welcomes discussion on improvements or 
alternatives to these approaches. In particular, DOE is interested in 
gathering comments on the following:
     The appropriateness of including test procedures for 
electric and oil instantaneous water heaters.
     The impacts on manufacturer(s) as a result of extending 
coverage of the existing minimum energy efficiency standards for 
electric and oil-fired instantaneous water heaters.
     The appropriateness of including the draw schedule and 
draw rate of the American National Standards Institute/American Society 
of Heating, Refrigerating and Air Conditioning Engineers Standard 
118.2-1993 for storage water heaters with rated storage capacities less 
than 20 gallons (76 liters).
     The impacts on manufacturer(s) as a result of extending 
coverage of the existing minimum energy efficiency standards for 
storage-type water heaters of less than 20 gallons (76 liters).
     The appropriateness of the proposed definition, first hour 
rating, for instantaneous and storage water heaters.
     The appropriateness of the proposed first hour rating test 
method for storage tank-type water heaters.
     The appropriateness of a first hour rating which might 
give unrealistic results for water heaters containing thermal 
compensating dip tubes or internal mixing valves.
     The appropriateness of the proposed definitions: heat pump 
water heater, add-on heat pump water heater, integral heat pump water 
heater, solar water heater, and heat pump water heater storage tank.
     The adequateness of the test provisions for heat pump 
water heaters regarding the usage of backup electric resistance 
element(s).
     The appropriateness of the proposed test energy method to 
determine the output energy for microwave ovens.
     The appropriateness to incorporate by reference the 
International Electrotechnical Commission Publication 705, and 
Amendment 2-1993, ``Methods for Measuring the Performance of Microwave 
Ovens for Household and Similar Purposes,'' section 4, Paragraph 12 
``Microwave Power Output Measurement,'' Paragraph 13 ``Electrical Power 
Output [[Page 15339]] Measurement,'' and Paragraph 14 ``Efficiency'' as 
a test method for microwave ovens.
     The appropriateness of the proposed definitions: Agitator, 
machine- controlled water fill capability, modified energy factor, 
moisture removal factor, nonwater-heating clothes washer, 
thermostatically controlled valves, top-loader-horizontal-axis clothes 
washer, top- loader-vertical-axis clothes washer, water consumption 
factor and water-heating clothes washer.
     The appropriateness of the proposed test and performance 
measurement methods for water-heating clothes washers.
     The appropriateness of using 5 percent and 25 percent to 
prorate the ``hottest'' available setting and the ``hot'' setting, 
respectively, for water-heating clothes washers.
     The appropriateness of a new descriptor (moisture removal 
energy) to determine the efficiency of moisture removal from the test 
load.
     The appropriateness of a new descriptor (water consumption 
factor) to determine the water consumption of clothes washers.
     The appropriateness of a new efficiency descriptor 
(modified energy factor) for possible future use in establishing energy 
conservation standards for clothes washers.

List of Subjects in 10 CFR Part 430

    Administrative practice and procedure, Energy conservation, 
Household appliances, Incorporation by reference.

    Issued in Washington, DC, February 8, 1995.
Christine Ervin,
Assistant Secretary, Energy Efficiency and Renewable Energy.

    For the reasons set forth in the preamble, part 430 of chapter II 
of title 10, of the Code of Federal Regulations is proposed to be 
amended as set forth below:

PART 430--ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS

    1. The authority citation for Part 430 continues to read as 
follows:

    Authority: 42 U.S.C. 6291-6309.

    2. Section 430.22 is amended by revising paragraph (a)(2)(ii) and 
adding paragraph (a)(3)(iv) and adding item number 13 to paragraph 
(a)(4) to read as follows:


Sec. 430.22  Reference sources.

    (a) * * *
    (2) * * *
    (ii) U.S. Department of Energy, Office of Energy Efficiency and 
Renewable Energy, Hearings and Dockets, Forrestal Building, 1000 
Independence Avenue, SW., Washington, DC 20585.
    (3) * * *
    (iv) Copies of the International Electrotechnical Commission 
Publication can be obtained from the American National Standards 
Institute, 11 West 42nd Street, New York, New York 10036, (212) 642-
4936.
    (4) * * *

    13. International Electrotechnical Commission Publication 705, 
and Amendment 2-1993, ``Methods for Measuring the Performance of 
Microwave Ovens for Household and Similar Purposes,'' Section 4, 
Paragraph 12 ``Microwave Power Output Measurement,'' Paragraph 13 
``Electrical Power Output Measurement,'' and Paragraph 14 
``Efficiency.''


Sec. 430.23  [Amended]

    3. Section 430.23, Test procedures for measures of energy 
consumption, is amended to read as follows:
    A. In Sec. 430.23(i)(1)(iii) (second sentence) replace ``4.3.1, 
4.2.2, 4.1.2.5, or 4.1.2.6, 4.4.3, and 4.5.1.3'' with ``4.3, 4.2.2, 
4.1.2, and 4.4.3.''
    B. In Sec. 430.23(i)(2) (first sentence) replace ``4.2.1.3, 4.1.3 
and 4.4.2'' with ``4.2.1, 4.1.3, and 4.4.4.''
    C. In Sec. 430.23(i)(3) (first sentence) replace ``4.3.2, and 
4.5.2'' with ``4.3'' and replace the comma following ``subpart'' with a 
period and remove the remainder of the sentence.
    D. In Sec. 430.23(i)(4) (first sentence) replace ``4.3.3, 4.2.3, 
4.1.4, 4.4.4 and 4.5.3'' with ``4.3, 4.2.3, 4.1.4, 4.4.5.''
    E. In Sec. 430.23(j)(1)(i)(A) replace ``416'' with ``392''.
    F. In Sec. 430.23(j)(1)(i)(B) replace ``determined according to 
4.6'' with ``determined according to section 4.1.1.6 (nonwater-heating) 
or 4.1.2.2 (water-heating)''.
    G. In Sec. 430.23(j)(1)(ii) (introductory text) replace ``When gas-
heated or oil-heated water is used, the product of: the representative 
average-use cycle of 416 cycles per year'' with ``When gas-heated or 
oil-heated water is used, the product of: the representative average-
use cycle of 392 cycles per year (for nonwater-heating clothes 
washers)''.
    H. In Sec. 430.23(j)(1)(ii)(A) replace ``4.4'' with ``4.1.1.4''.
    I. In Sec. 430.23(j)(1)(ii)(B) replace ``in Btu per cycle, 
determined according to 4.5'' with ``in Btu per cycle (MJ per kwh), 
determined according to section 4.1.1.5''.
    J. In Sec. 430.23, paragraph (j)(2) is revised to read as follows:


Sec. 430.23  Test procedures for methods of energy consumption.

* * * * *
    (j) * * *
    (2)(i) The energy factor for automatic and semi-automatic clothes 
washers shall be the quotient of the cubic foot (liter) capacity of the 
clothes container as determined in 3.1 of appendix J to this subpart 
divided by the clothes washer energy consumption per cycle, expressed 
as: (for nonwater-heating clothes washers) the sum of the machine 
electrical energy consumption and the hot water energy consumption as 
determined in 4.1.1.4 and 4.1.1.3, respectively, of appendix J to this 
subpart; (or for water-heating clothes washers) the energy consumption 
as determined in 4.1.2.2, of appendix J to this subpart. The result 
shall be rounded off to the nearest 0.01 cubic foot per kilowatt-hour 
per cycle (0.01 liter per kilowatt-hour per cycle).
    (ii) The modified energy factor for automatic and semi-automatic 
clothes washers is determined in accordance with section 4.4.1 
(nonwater-heating clothes washers) or 4.4.2 (water-heating clothes 
washers), of appendix J to this subpart. The result shall be rounded 
off to the nearest 0.01 cubic foot per kilowatt-hour per cycle (0.01 
liter per kilowatt-hour per cycle).
    (iii) The water consumption factor for automatic and semi-automatic 
clothes washers is determined in accordance with section 4.3.3, of 
appendix J to this subpart. The result shall be rounded off to the 
nearest 0.001 cubic foot per gallon per cycle (0.001 liter per liter 
per cycle).
* * * * *
    4. Appendix E to subpart B of part 430 is revised to read as 
follows:

Appendix E to Subpart B of Part 430--Uniform Test Method for Measuring 
the Energy Consumption of Water Heaters

1. Definitions

    1.1  Cut-in means the time or water temperature when a water 
heater thermostat has acted to increase the energy or fuel input to 
the heating elements, compressor, or burner.
    1.2  Cut-out means the time or water temperature when a water 
heater thermostat has acted to reduce to a minimum the energy or 
fuel input to the heating elements, compressor, or burner.
    1.3  Design Power Rating means the nominal power rating that a 
water heater manufacturer assigns to a particular design of water 
heater, expressed in kilowatts or Btu (KJ) per hour as appropriate.
    1.4  Energy Factor means a measure of water heater overall 
efficiency.
    1.5  First Hour Rating is an estimate of the maximum volume of 
``hot'' water that a storage-type water heater can supply within an 
hour that begins with the water heater [[Page 15340]] fully heated 
(i.e., all thermostats satisfied). For instantaneous water heaters, 
first hour rating designates the maximum volume of hot water that 
can be supplied during any hour.
    1.6  Heat Pump Water Heater Storage Tank is an insulated tank 
designed, wired and labeled for use exclusively with an add-on heat 
pump water heater or solar water heater and being unable to operate 
without an add-on heat pump water heater or solar water heater. The 
heat pump water heater storage tank may contain one or two 
thermostats and up to two electric resistance heating elements, and 
has a manufacturer's rated capacity of 120 gallons (450 liters) or 
less. When tested with the add-on heat pump water heater or solar 
water heater inoperative, the heat pump water heater storage tank 
shall have an energy factor that is determined in accordance with 
the test procedure for water heaters.
    1.7  Heat Trap means a device which can be integrally connected 
or independently attached to the hot and/or cold water pipe 
connections of a water heater such that the device will develop a 
thermal or mechanical seal to minimize the recirculation of water 
due to thermal convection between the water heater tank and its 
connecting pipes.
    1.8  Instantaneous-Type Water Heaters.
    1.8.1  Electric Instantaneous Water Heater means a water heater 
that uses electricity as the energy source, initiates heating based 
on sensing water flow, is designed to deliver water at a controlled 
temperature of less than 180 deg.F (82 deg.C), has a maximum input 
of 12 kilowatts or less, and has a manufacturer's specified storage 
capacity of less than 2 gallons (8 liters). The unit may use a fixed 
or variable power input.
    1.8.2  Gas Instantaneous Water Heater means a water heater that 
uses gas as the energy source, initiates heating based on sensing 
water flow, is designed to deliver water at a controlled temperature 
of less than 180 deg.F (82 deg.C), has an input greater than 50,000 
Btu per hour (53 MJ per hour) but less than 200,000 Btu per hour 
(210 MJ per hour), and has a manufacturer's specified storage 
capacity of less than 2 gallons (8 liters). The unit may use a fixed 
or variable burner input.
    1.8.3  Oil Instantaneous Water Heater means a water heater that 
uses oil as the energy source, initiates heating based on sensing 
water flow, is designed to deliver water at a controlled temperature 
of less than 180 deg.F (82 deg.C), has an input greater than 50,000 
Btu per hour (53 MJ per hour) but less than 200,000 Btu per hour 
(210 MJ per hour), and has a manufacturer's specified storage 
capacity of less than 2 gallons (8 liters). The unit may use a fixed 
or variable burner input.
    1.9  Recovery Efficiency means the ratio of energy delivered to 
the water to the energy content of the fuel consumed by the water 
heater.
    1.10  Standby means the time during which water is not being 
withdrawn from the water heater. There are two standby time 
intervals used within this test procedure: stby,1 
represents the elapsed time between the time at which the maximum 
mean tank temperature is observed after the sixth draw and 
subsequent recovery and the end of the 24-hour test; 
stby,2 represents the total time during the 24-hour 
simulated use test when water was not being withdrawn from the water 
heater.
    1.11  Storage-Type Water Heaters.
    1.11.1  Electric storage water heater means a water heater that 
uses electricity as the energy source, is designed to heat and store 
water at a thermostatically controlled temperature of less than 
180 deg.F (82 deg.C), has a nominal input of 12 kilowatts or less, 
and has a manufacturer's rated storage capacity of 120 gallons (450 
liters) or less.
    1.11.2  Gas Storage Water Heater means a water heater that uses 
gas as the energy source, is designed to heat and store water at a 
thermostatically controlled temperature of less than 180 deg.F 
(82 deg.C), has a nominal input of 75,000 Btu per hour (79 MJ per 
hour) or less, and has a manufacturer's rated storage capacity of 
100 gallons (380 liters) or less.
    1.11.3  Heat Pump Water Heater means a water heater that uses 
electricity as the energy source, is designed to heat and store 
water at a thermostatically controlled temperature of less than 
180 deg.F (82 deg.C), has a maximum current rating of 24 amperes 
(includes the compressor and all auxiliary equipment such as fans, 
pumps, and controls, and if on the same circuit, any resistive 
elements) for an input voltage of 250 volts or less, and, if the 
tank is supplied, has a manufacturer's rated storage capacity of 120 
gallons (450 liters) or less. Resistive elements used to provide 
supplemental heating may use the same circuit as the compressor if 
(1) An interlocking mechanism prevents concurrent compressor 
operation and resistive heating, or (2) concurrent operation does 
not result in the maximum current rating of 24 amperes being 
exceeded. Otherwise, separate circuits shall be used by the 
resistive elements and the heat pump components. A heat pump water 
heater may be an integral type or an add-on type.
    a. Integral heat pump water heater--An air-to-water heat pump 
integral with an insulated storage tank.
    b. Add-on heat pump water heater--An air-to-water heat pump 
designed for use with a heat pump water heater storage tank.
    1.11.4  Oil Storage Water Heater means a water heater that uses 
oil as the energy source, is designed to heat and store water at a 
thermostatically controlled temperature of less than 180 deg.F 
(82 deg.C), has a nominal energy input of 105,000 Btu/hr (110 MJ/hr) 
or less, and has a manufacturer's rated storage capacity of 50 
gallons (190 liters) or less.
    1.11.5  Solar Water Heater means a water heater that is designed 
to obtain at least half of the annual energy for heating water from 
the sun.
    1.12  ASHRAE Standard 41.1-86 means the standard published in 
1986 by the American Society of Heating, Refrigerating and Air-
Conditioning Engineers, Inc. and titled Standard Measurement Guide: 
Section on Temperature Measurements.
    1.13  ASTM-D-2156-80 means the test standard published in 1980 
by the American Society of Testing and Measurements and titled 
Method for Smoke Density in Flue Gases from Burning Distillate 
Fuels.
    1.14  Rated Storage Volume means the water storage capacity of a 
water heater, in gallons (liters), as specified by the manufacturer.

2. Test Conditions

    2.1  Installation Requirements. Tests shall be performed with 
the water heater and instrumentation installed in accordance with 
Section 4 of this appendix.
    2.2  Ambient Air Temperature. The ambient air temperature shall 
be controlled to a value between 65.0 deg.F and 70.0 deg.F 
(18.3 deg.C and 21.1 deg.C) on a continuous basis. For heat pump 
water heaters, the dry bulb temperature shall be maintained at 
67.5 deg.F  1 deg.F (19.7 deg.C  0.6 deg.C) 
and, in addition, the relative humidity shall be maintained between 
49 and 51 percent.
    2.3  Supply Water Temperature. The temperature of the water 
being supplied to the water heater shall be maintained at 
58 deg.F 2 deg.F (14.4 deg.C1.1 deg.C) 
throughout the test.
    2.4  Storage Tank Temperature. The average temperature of the 
water within the storage tank shall be set to 
135 deg.F5 deg.F (57.2 deg.C2.8 deg.C).
    2.5  Supply Water Pressure. During the test when water is not 
being withdrawn, the supply pressure shall be maintained between 40 
psig (275 kPa) and the maximum allowable pressure specified by the 
water heater manufacturer.
    2.6  Electrical and/or Fossil Fuel Supply.
    2.6.1  Electrical. Maintain the electrical supply voltage to 
within 1 percent of the center of the voltage range 
specified by the water heater and/or heat pump manufacturer.
    2.6.2  Natural Gas. Maintain the supply pressure in accordance 
with the manufacturer's specifications. If the supply pressure is 
not specified, maintain a supply pressure of 7 to 10 inches of water 
column (1.7 Kpa to 2.5 Kpa). If the water heater is equipped with a 
gas appliance pressure regulator, the regulator outlet pressure 
shall be within 10% of the manufacturer's specified 
manifold pressure. Use natural gas having a higher heating value of 
approximately 1,025 Btu per standard cubic foot (38190 KJ per 
standard cubic meter).
    2.6.3  Propane Gas. Maintain the supply pressure in accordance 
with the manufacturer's specifications. If the supply pressure is 
not specified, maintain a supply pressure of 11 to 13 inches of 
water column (2.7 kPa to 3.2 kPa). If the water heater is equipped 
with a gas appliance pressure regulator, the regulator outlet 
pressure shall be within 10% of the manufacturer's 
specified manifold pressure. Use propane gas with a higher heating 
value of approximately 2,500 Btu per standard cubic foot (93 kJ per 
standard cubic meter).
    2.6.4  Fuel Oil Supply. Maintain an uninterrupted supply of fuel 
oil. Use fuel oil having a heating value of approximately 138,700 
Btu per gallon (38,660 kJ per liter).

3. Instrumentation

    3.1  Pressure Measurements. Pressure measuring instruments shall 
have an error no greater than the following values:

                                                                        
[[Page 15341]]                                                          
------------------------------------------------------------------------
    Item measured        Instrument accuracy      Instrument precision  
------------------------------------------------------------------------
Gas pressure........   0.1 inch of   0.05 inch  
                       water column ( 0.025 kPa).        minus> 0.012 kPa).     
Atmospheric pressure   0.1 inch of   0.05 inch  
                       mercury column ( 0.34 kPa).         ( 0.17     
                                                 kPa).                  
Water pressure......   1.0 pounds    0.50 pounds
                       per square inch ( 6.9 kPa).          minus> 3.45 kPa).      
------------------------------------------------------------------------

    3.2  Temperature Measurement.
    3.2.1  Measurement. Temperature measurements shall be made in 
accordance with the Standard Measurement Guide: Section on 
Temperature Measurements, ASHRAE Standard 41.1-86.
    3.2.2  Accuracy and Precision. The accuracy and precision of the 
instruments, including their associated readout devices, shall be 
within the limits as follows:

----------------------------------------------------------------------------------------------------------------
                      Item measured                           Instrument accuracy        Instrument precision   
----------------------------------------------------------------------------------------------------------------
Air dry bulb temperature................................   0.2  deg.F      0.1  deg.F   
                                                           ( 0.1  deg.C).  ( 0.06       
                                                                                       deg.C).                  
Air wet bulb temperature................................   0.2  deg.F      0.1  deg.F   
                                                           ( 0.1  deg.C).  ( 0.06       
                                                                                       deg.C).                  
Inlet and outlet water temperatures.....................   0.2  deg.F      0.1  deg.F   
                                                           ( 0.1  deg.C).  ( 0.06       
                                                                                       deg.C).                  
Storage tank temperatures...............................   0.5  deg.F      0.25  deg.F  
                                                           ( 0.3  deg.C).  ( 0.14       
                                                                                       deg.C).                  
----------------------------------------------------------------------------------------------------------------

    3.2.3  Scale Division. In no case shall the smallest scale 
division of the instrument or instrument system exceed 2 times the 
specified precision.
    3.2.4  Temperature Difference. Temperature difference between 
the entering and leaving water may be measured with any of the 
following:

a. A thermopile
b. Calibrated resistance thermometers
c. Precision thermometers
d. Calibrated thermistors
e. Calibrated thermocouple
f. Quartz thermometers

    3.2.5  Thermopile Construction. If a thermopile is used, it 
shall be made from calibrated thermocouple wire taken from a single 
spool. Extension wires to the recording device shall also be made 
from that same spool.
    3.2.6  Time Constant. The time constant of the instruments used 
to measure the inlet and outlet water temperatures shall be no 
greater than 5 seconds.
    3.3  Liquid Flow Measurements. The accuracy of the liquid flow 
rate measurement, using the calibration if furnished, shall be equal 
to or less than  1% of the measured value in mass units 
per unit time.
    3.4  Electric Energy. The electrical energy used shall be 
measured with an instrument and associated readout device that are 
accurate within 1% of the reading.
    3.5  Fossil Fuels. The quantity of fuel used by the water heater 
shall be measured with an instrument and associated readout device 
that is accurate within 1% of the reading.
    3.6  Mass Measurements. For mass measurements greater than or 
equal to 10 pounds (4.5 kg), a scale that is accurate within 
1.0% of the reading shall be used to make the 
measurement. For mass measurements less than 10 pounds (4.5 kg), the 
scale shall provide a measurement that is accurate within 
0.1 pound (0.045 kg).
    3.7  Heating Value. The higher heating value of the natural gas, 
propane, or fuel oil shall be measured with an instrument and 
associated readout device that is accurate within 1% of 
the reading. The heating value of natural gas and propane must be 
corrected for local temperature and pressure conditions.
    3.8  Time. The elapsed time measurements shall be measured with 
an instrument that is accurate within 0.5 seconds per 
hour.

4. Installation

    4.1  Water Heater Mounting. A water heater designed to be free 
standing shall be installed according to the manufacturer's 
directions on a \3/4\ inch (2 cm) thick plywood platform supported 
by three 2 x 4 inch (5 cm x 10 cm) runners. If the water heater is 
not approved for installation on combustible flooring, suitable non-
combustible material shall be placed between it and the platform. 
For heat pump water heaters without a storage tank supplied by the 
manufacturer, connections shall be made with a storage tank as 
described in section 4.10 and in accordance with manufacturer-
published installation instructions. The storage tank and heat pump 
section shall be placed on platform(s) constructed as previously 
described. If installation materials are not provided by the heat 
pump manufacturer, use uninsulated 8 foot (2.4 m) long connecting 
hoses, having an inside diameter of \5/8\ inch (1.6 cm). Wall 
mounted water heaters shall be installed in accordance with 
manufacturer-published installation instructions on a simulated wall 
section made from \3/4\ inch (2 centimeter) plywood and 2 x 4 inch 
(5 x 10 centimeter) studs. Placement in the test room shall be in an 
area protected from drafts.
    4.2  Water Supply. The water supply shall be capable of 
delivering water at conditions as specified in sections 2.3 and 2.5.
    4.3  Water Inlet and Outlet Configuration. Inlet and outlet 
piping connections shall be configured as illustrated in Figures 1, 
2, or 3. For water heaters that are 36 inches (91 centimeters) or 
less in height and intended for installation either beneath, 
adjacent to, or in conjunction with a counter (commonly referred to 
as an under-the-counter or table-top model), the inlet and outlet 
connections shall be configured as illustrated in Figures 4a and 4b. 
Type ``L'' hard copper tubing, the same size as the connections on 
the water heater, shall be connected to the tank and extend 24 
inches (61 centimeters) in length. If an under-the-counter type 
water heater is not factory equipped with pipe to extend the field 
connection point of the water heater lines to outside of the jacket 
or cabinet, type ``L'' hard copper tubing shall be used to extend 
the water line horizontally to the exterior of the jacket or 
cabinet. Unions may be used to facilitate installation and removal 
of the piping arrangements. A pressure gauge and diaphragm expansion 
tank shall be installed in the supply water piping at a location 
upstream of the 24-inch (61 centimeters) cold water inlet pipe. An 
appropriately rated pressure and temperature relief valve shall be 
installed on all water heaters at the port specified by the 
manufacturer. Discharge piping for the relief valve shall be non-
metallic. If heat traps and/or piping insulation and/or pressure 
relief valve insulation are supplied with the water heater, they 
shall be installed for testing. Clearance shall be provided such 
that none of the piping contacts other surfaces in the test room.
    4.4  Fuel and/or Electrical Power and Energy Consumption. 
Install one or more instruments which measure, as appropriate, the 
quantity and rate of electrical energy and/or fossil fuel 
consumption in accordance with Section 3. For heat pump water 
heaters that use supplemental resistive heating, the electrical 
energy supplied to the resistive element(s) shall be metered 
separately from the electrical energy supplied to the entire 
appliance or to the remaining components (i.e., compressor, fans, 
pumps, controls, etc.).
    4.5  Internal Storage Tank Temperature Measurements. Install six 
temperature measurement sensors inside the water heater tank with a 
vertical distance of at least 4 inches (10 centimeters) between 
successive sensors. A temperature sensor shall be positioned at the 
vertical midpoint of each of the six equal volume nodes within the 
tank. Nodes designate the equal volumes used to evenly partition the 
total volume of the tank. As much as is possible, the temperature 
sensor should be positioned away from any heating elements, anodic 
protective devices, tank walls, and flue pipe walls. If the tank 
cannot accommodate six temperature sensors and meet the installation 
requirements specified above, install the maximum number of sensors 
which comply with the installation requirements. The temperature 
sensors shall be installed either through (1) the anodic device 
opening; (2) the relief valve opening; or (3) the hot water outlet. 
If [[Page 15342]] installed through the relief valve opening or the 
hot water outlet, a tee fitting or outlet piping, as applicable, 
shall be installed as close as possible to its original location. If 
the relief valve temperature sensor is relocated, and it no longer 
extends into the top of the tank, a substitute relief valve that has 
a sensing element that can reach into the tank shall be installed. 
If the hot water outlet includes a heat trap, the heat trap shall be 
installed on top of the tee fitting. Added fittings shall be covered 
with thermal insulation having an R value between 4 and 8 
hrft2 deg.F/Btu (0.7 and 1.4 
m2 deg.C/W).

BILLING CODE 6450-01-P
[GRAPHIC][TIFF OMITTED]TP23MR95.000


[[Page 15343]]

[GRAPHIC][TIFF OMITTED]TP23MR95.001


BILLING CODE 6450-01-C
[[Page 15344]]

    4.6  Ambient Temperature. The ambient air temperature shall be 
measured approximately at the vertical mid-point of the water heater 
and approximately 2 feet (60 centimeters) from the surface of the 
water heater. The sensor shall be shielded against radiation.
    4.7  Inlet and Outlet Water Temperature Measurements. Install 
temperature sensors in the cold-water inlet pipe and hot-water 
outlet pipe as shown in Figures 1, 2, 3, or 4a and 4b, as 
applicable.
    4.8  Flow Control. A flow control valve shall be installed to 
provide flow as specified in Section 5.
    4.9  Flue Requirements.
    4.9.1  Gas-Fired Water Heaters. Establish a natural draft in the 
following manner. For gas-fired water heaters having a vertically 
discharging draft hood outlet, a 5-foot (1.5 meter) vertical vent 
pipe extension having a diameter equal to the largest flue collar 
size of the draft hood shall be connected to the draft hood outlet. 
For gas-fired water heaters having a horizontally discharging draft 
hood outlet, a 90-degree elbow having a diameter equal to the 
largest flue collar size of the draft hood shall be connected to the 
draft hood outlet. A 5-foot (1.5 meter) length of vent pipe shall be 
connected to the elbow and oriented to discharge vertically upward. 
Direct vent gas-fired water heaters shall be installed with venting 
equipment specified in the manufacturer's instructions using the 
minimum vertical and horizontal lengths of vent pipe recommended by 
the manufacturer.
    4.9.2  Oil-Fired Water Heaters. Establish a draft at the flue 
collar as specified in the manufacturer's literature. Establish the 
draft by using a sufficient length of vent pipe connected to the 
water heater flue outlet and directed vertically upward. For an oil-
fired water heater having a horizontally discharging draft hood 
outlet, a 90-degree elbow having a diameter equal to the largest 
flue collar size of the draft hood shall be connected to the draft 
hood outlet. A length of vent pipe sufficient to establish the draft 
shall be connected to the elbow fitting and oriented to discharge 
vertically upward. Direct vent oil-fired water heaters should be 
installed with venting equipment as specified in the manufacturer's 
instructions, using the minimum vertical and horizontal lengths of 
vent pipe recommended by the manufacturer.
    4.10  Heat Pump Water Heater Storage Tank. The heat pump water 
heater storage tank to be used for testing a heat pump water heater 
without a tank supplied by the manufacturer shall have a volume of 
47.0 gallons 1.0 gallon C 1804 liters with 
an Energy Factor of 0.87.01 as determined in accordance 
with Section 6.1.7 with two 4.5 kW heating elements controlled in 
such a manner as to prevent both elements from operating 
simultaneously.

5. Test Procedures

    5.1  Storage-Type Water Heaters, Including Heat Pump Water 
Heaters.
    5.1.1  Determination of Storage Tank Volume. Determine the 
storage capacity, Vst, of the water heater under test, in gallons 
(liters), by subtracting the tare weight--measured while the tank is 
empty--from the gross weight of the storage tank when completely 
filled with water (with all air eliminated and line pressure applied 
as described in section 2.5) and dividing the resulting net weight 
by the density of water. Density shall be evaluated based on the 
temperature of the stored water.
    5.1.2  Setting the Thermostat for a Thermostatically Operated 
Water Heater. Starting with a tank of supply water, initiate normal 
operation of the water heater. After cutout, determine the mean tank 
temperature (based on all of the in-tank sensors) every minute until 
the maximum value is observed. Determine whether this maximum value 
for the mean tank temperature is within the range of 
135 deg.F5 deg.F (57.2 deg.C2.8 deg.C). If 
not, turn off the water heater, adjust the thermostat, and refill 
the tank with supply water. Then, initiate normal operation of the 
water heater, and once again determine the maximum mean tank 
temperature after cut-out. Repeat this sequence until the maximum 
mean tank temperature after cut-out is within the range of 
135 deg.F5 deg.F (57.2 deg.C2.8 deg.C).
    If an electric water heater has two or more thermostats, the 
thermostat that controls the upper-most heating element shall be set 
first to yield a maximum water temperature of 
135 deg.F5 deg.F (57.2 deg.C2.8 deg.C), as 
measured by the in-tank sensors that are positioned above the upper-
most heating element. The thermostat that controls the heating 
element positioned next highest in the tank shall then be set to 
yield a maximum water temperature of 135 deg.F5 deg.F 
(57.2 deg.C2.8 deg.C). This process shall be repeated 
until the thermostat controlling the lowest element is correctly 
adjusted. When adjusting the thermostat that controls the lowest 
element, the maximum mean tank temperature after cut-out, as 
determined using all the in-tank sensors, shall be within 
135 deg.F5 deg.F (57.2 deg.C2.8 deg.C). When 
adjusting all other thermostats, use only the in-tank temperature 
sensors positioned above the heating element in question to evaluate 
the maximum water temperature after cut-out.
    For heat pump water heaters, which control an auxiliary 
resistance element, the thermostat shall be set in accordance with 
the manufacturer's installation instructions.
    5.1.3  Power Input Determination. For all water heaters except 
electric types having immersed heating elements, initiate normal 
operation and determine the power input, P, to the main burners 
(including pilot light power, if any) after 15 minutes of operation. 
If the water heater is equipped with a gas appliance pressure 
regulator, the regulator outlet pressure shall be set within 
10% of that recommended by the manufacturer. For oil-
fired water heaters the fuel pump pressure shall be within 
10% of the manufacturer's specified pump pressure. All 
burners shall be adjusted to achieve an hourly Btu (kJ) rating that 
is within 2% of the value specified by the manufacturer. 
For an oil-fired water heater, adjust the burner to give a CO2 
reading recommended by the manufacturer and an hourly Btu (kJ) 
rating that is within 2% of that specified by the 
manufacturer. Smoke in the flue may not exceed No. 1 smoke as 
measured by the procedure in ASTM-D-2156-80.
    5.1.4  First Hour Rating Test.
    5.1.4.1  General. During hot water draws, remove water at a rate 
of 3.000.25 gallons per minute (11.40.95 
liters per minute) for units with rated storage capacities of 20 
gallons (76 liters) or more and 1.00.25 gallons per 
minute (3.80.95 liters per minute) for units with rated 
storage capacities less than 20 gallons (76 liters). Collect the 
water in a container that is large enough to hold the volume removed 
during an individual draw and suitable for weighing at the 
termination of each draw. Alternatively, a water meter may be used 
to directly measure the water volume(s) withdrawn.
    5.1.4.2  Draw Initiation Criterion. Begin the first hour rating 
test by imposing a draw on the storage-type water heater. After 
completion of this first draw, initiate successive draws based on 
the following criteria. For gas- and oil-fired water heaters, 
initiate successive draws when the thermostat acts to reduce the 
supply of fuel to the main burner. For electric water heaters having 
a single element or multiple elements that all operate 
simultaneously, initiate successive draws when the thermostat acts 
to reduce the electrical input supplied to the element(s). For 
electric water heaters having two or more elements that do not 
operate simultaneously, initiate successive draws when the 
applicable thermostat acts to reduce the electrical input to the 
element located vertically highest in the storage tank. For heat 
pump water heaters that do not use supplemental resistive heating, 
initiate successive draws immediately after the electrical input to 
the compressor is reduced by the action of the water heater's 
thermostat. For heat pump water heaters that do use supplemental 
resistive heating, initiate successive draws immediately after the 
electrical input to the compressor or the uppermost resistive 
element is reduced by the action of the applicable water heater 
thermostat. This draw initiation criterion for heat pump water 
heaters that use supplemental resistive heating, however, shall only 
apply when the water located above the thermostat at cut-out is 
heated to 135 deg.F 5 deg.F 
(57.2 deg.C2.8 deg.C).
    5.1.4.3  Test Sequence. Establish normal water heater operation. 
If the water heater is not presently operating, initiate a draw. The 
draw may be terminated anytime after cut-in occurs. Once cut-out 
occurs (e.g., all thermostats satisfied), monitor the internal 
storage tank temperature sensors described in section 4.5 every 
minute. For each set of measurements, calculate the mean tank 
temperature. If any of these mean values are outside the range 
specified in section 2.4, adjust the thermostat(s) as specified in 
section 5.1.2 and reevaluate the mean tank temperature after all 
thermostats are again satisfied.
    Initiate a draw after a maximum mean tank temperature has been 
observed following cut-out. Record the time when the draw is 
initiated and designate it as an elapsed time of zero, 
(* = 0). The superscript * is used to denote variables 
pertaining to the first hour rating test. Record the outlet water 
temperature beginning 15 seconds after the draw is initiated and at 
5 second intervals thereafter, until the draw is terminated. 
Determine the maximum outlet temperature that occurs during this 
first draw and record [[Page 15345]] it as T*max,1. For 
the duration of this first draw and all successive draws, in 
addition, monitor the inlet temperature to the water heater to 
assure that the required 58 deg.F2 deg.F (14.4 deg.C 
 1.1 deg.C) test condition is met. Terminate the hot 
water draw when the outlet temperature decreases to 
T*max,1 - 25 deg.F (T*max,1-13.9 deg.C). Record 
this temperature as T*min,1. Following draw termination, 
determine the average outlet water temperature and the mass or 
volume removed during this first draw and record them as 
T*del,1 and M*1 or V*1, respectively.
    Initiate a second and, if applicable, successive draws each time 
the applicable draw initiation criterion described in section 
5.1.4.2 is satisfied. As required for the first draw, record the 
outlet water temperature beginning 15 seconds after initiating each 
draw and at 5 second intervals thereafter until the draw is 
terminated. Determine the maximum outlet temperature that occurs 
during each draw and record it as T*max,i, where i 
refers to the draw number. Terminate each hot water draw when the 
outlet temperature decreases to T*max,i - 25 deg.F 
(T*max,i - 13.9 deg.C). Record this temperature as 
T*min,i. Calculate and record the average outlet 
temperature and the mass or volume removed during each draw 
(T*del,i and M*i or V*i). Continue 
this sequence of draw and recovery until one hour has elapsed, at 
which time the electrical power and/or the fuel supplied to the 
water heater shall be disconnected and/or terminated.
    If a draw is occurring at an elapsed time of one hour, continue 
this draw until the outlet temperature decreases to 
T*max,n - 25 deg.F (T*max,n - 13.9 deg.C), at 
which time the draw shall be immediately terminated. The subscript 
n shall be used to denote quantities associated with the final 
draw. If a draw is not occurring at an elapsed time of one hour, a 
final draw shall be imposed at one hour. This draw shall be 
immediately terminated when the outlet temperature first indicates a 
value less than or equal to the cut-off temperature used for the 
previous draw (T*min,n-1). For cases where the outlet 
temperature is close to T*min,n-1, the final draw shall 
proceed for a minimum of 30 seconds. If an outlet temperature 
greater than T*min,n-1 is not measured within 30 seconds, 
the draw shall be immediately terminated and zero additional credit 
shall be given towards first hour rating (i.e., M*n = 0 or 
V*n = 0). Once the final draw is terminated, calculate and 
record the average outlet temperature and the mass or volume removed 
during the draw (T*del,n and M*n or 
V*n).
    5.1.5  24-Hour Simulated Use Test. During the simulated use 
test, a total of 64.3 1 gallon (2434 liters) 
shall be removed if the rated storage tank volume is 20 gallons (76 
liters) or greater. If the rated storage tank volume is less than 20 
gallons (76 liters) but greater than or equal to 10 gallons (38 
liters), a total of 240.5 gallon (911.9 
liters) shall be removed; and if the rated storage tank volume is 
less than 10 gallons (38 liters), a total of 90.5 gallon 
(341.9 liters) shall be removed. These values are 
referred to as the daily hot water usage in the following text.
    With the water heater turned off, fill the water heater with 
supply water and apply pressure as described in section 2.5. Turn on 
the water heater and associated heat pump unit, if present. After 
the cutout occurs, measure the mean tank temperature using the 
temperature sensors described in section 4.5 every minute until the 
maximum mean storage tank temperature is achieved. If this maximum 
mean temperature is outside the range specified in section 2.4, 
adjust the thermostat(s) as specified in section 5.1.2 and 
reevaluate the mean tank temperature after all thermostats are again 
satisfied. After thermostat adjustments are completed, the water 
heater may be operated for up to three cycles of drawing until cut-
in and then operating until cut-out, prior to the start of the test.
    At this time, record the mean tank temperature (To), and 
the electrical and/or fuel measurement readings, as appropriate. 
Begin the 24-hour simulated use test by withdrawing a volume from 
the water heater that equals one-sixth of the daily hot water usage. 
Record the time when this first draw is initiated and assign it as 
the test elapsed time () of zero. Record the average 
storage tank and ambient temperature every 15 minutes throughout the 
24-hour simulated use test unless a recovery or a draw is occurring. 
At elapsed time intervals of one, two, three, four, and five hours 
from  = 0, initiate additional draws removing an amount of 
water equivalent to one-sixth of the daily hot water usage with the 
maximum allowable deviation for any single draw being 
0.5 gallons (1.9 liters) for units having 
rated storage capacities of 20 gallons (76 liters) or greater, and 
0.1 gallons (0.4 liters) for units having rated storage 
capacities less than 20 gallons (76 liters). The quantity of water 
withdrawn during the sixth draw shall be increased or decreased as 
necessary such that the total volume of water withdrawn equals: 
64.31.0 gallons (243.43.8 liters) for water 
heaters having rated storage capacities of 20 gallons (76 liters) or 
more, 240.5 gallons (90.81.9 liters) for 
water heaters having rated storage capacities less than 20 gallons 
(76 liters) but greater than or equal to 10 gallons (38 liters), and 
9.00.5 gallons (34.11.9 liters) for water 
heaters having rated storage capacities less than 10 gallons (38 
liters).
    All draws during the simulated use test shall be made at flow 
rates of 3.00.25 gallons per minute 
(11.40.95 liters per minute) when testing water heaters 
having rated storage capacities of 20 gallons (76 liters) or more. 
For water heaters having rated storage capacities less than 20 
gallons (76 liters), flow rates of 1.00.25 gallons per 
minute (3.80.95 liters per minutes) shall be achieved. 
Measurements of the inlet and outlet temperatures shall be made 
beginning 15 seconds after the draw is initiated and at every 
subsequent 5 second interval throughout the duration of each draw. 
The arithmetic mean of the hot water discharge temperature and the 
cold water inlet temperature shall be determined for each draw 
(Tdel,i and   Tin,i). Determine and record the net mass or 
volume removed (Mi or Vi), as appropriate, after each 
draw.
    At the end of the recovery period following the first draw, 
record the maximum mean tank temperature observed after cut-out,   
Tmax,1, and the energy consumed by a gas or oil water heater, 
Qr. For heat pump water heaters, the total electrical energy 
consumed by the heat pump (including compressor, fan, controls, 
pump, etc.) and, if applicable, by the resistive element(s) during 
the first recovery shall be recorded as Qr. In addition, the 
total operating time of the compressor during the first recovery 
shall be determined and recorded as cmp,1. Finally, 
for heat pump water heaters that use resistive heating during the 
first recovery, the electrical energy consumed by the resistive 
element(s) shall be separately metered and recorded, Qres,1.
    At the end of the recovery period that follows the sixth draw, 
determine and record the total electrical energy and/or fossil-fuel 
consumed since the beginning of the test, Qsu. In preparation 
for determining the energy consumed during stand-by, record the 
reading given on the electrical energy (watt-hour) meter, the gas 
meter, and/or the scale used to determine oil consumption, as 
appropriate. Record the maximum value of the mean tank temperature 
after cutout as Tsu. Except as noted below, allow the water 
heater to remain in the standby mode until 24-hours have elapsed 
from the start of the test, i.e., since  = 0. Prevent the 
water heater from beginning a recovery cycle during the last hour of 
the test by turning off the electric power to the electrical heating 
elements and heat pump, if present, or by turning down the fuel 
supply to the main burner at an elapsed time of 23 hours. If a 
recovery is taking place at an elapsed time of 23 hours, wait until 
the recovery is complete before reducing the electrical and/or fuel 
supply to the water heater. At 24 hours, record the mean tank 
temperature, T24, and the electric and/or fuel instrument 
readings. Determine the total fossil fuel or electrical energy 
consumption, as appropriate, for the entire 24-hour simulated use 
test, Q. Record the time interval between the time at which the 
maximum mean tank temperature is observed after the sixth draw and 
the end of the 24-hour test as stby,1. Record the time 
during which water was not being withdrawn from the water heater 
during the entire 24-hour period as stby,2.
    5.2  Instantaneous Water Heaters.
    5.2.1  Setting the Outlet Discharge Temperature. Initiate normal 
operation of the water heater at the full input rating. Monitor the 
discharge water temperature and set to a value of 
135 deg.F5 deg.F (57.2 deg.C2.8 deg.C) in 
accordance with the manufacturer's instructions. If the water heater 
is not capable of providing this discharge temperature when the flow 
rate is 3.000.25 gallons per minute 
(11.40.95 liters per minute), then adjust the flow rate 
as necessary to achieve the specified discharge water temperature. 
Record the corresponding flow rate as Vmax.
    If the instantaneous water heater incorporates a controller that 
permits continuous burner or electric heating element operation at a 
reduced input rate, adjust the flow rate as necessary to achieve a 
discharge water temperature of 135 deg.F5 deg.F 
(57.2 deg.C2.8 deg.C) while maintaining the minimum 
input rate. Record the corresponding flow rate as Vmin. If an 
outlet temperature of 135 deg.5 deg.F 
(57.2 deg.C2.8 deg.C) cannot be achieved at the minimum 
flow rate [[Page 15346]] permitted by the instantaneous water 
heater, record the flow rate as Vmin and the corresponding 
outlet temperature as Tmin.
    25.2.2  Power Input Determination. Gas-fired and oil-fired 
instantaneous water heaters shall have the burners adjusted to the 
maximum firing rate specified by the manufacturer.
    5.2.3  First Hour Rating Test for Instantaneous Water Heaters. 
Establish normal water heater operation at the maximum input rate 
with the discharge water temperature set in accordance with section 
5.2.1. During the test, do not interrupt the electrical energy or 
fossil fuel supplied to the water heater. During the one hour test, 
either collect the withdrawn water for later measuring the total 
mass removed, or alternatively, use a water meter to directly 
measure the water volume removed.
    Begin with the water flow rate temporarily discontinued. Record 
the scale or water meter reading as appropriate. Initiate a draw and 
record the corresponding time. Record the inlet and outlet water 
temperatures beginning 15 seconds after the draw is initiated and at 
every subsequent 5 second interval throughout the duration of the 
draw. At the end of one hour terminate the draw. Determine the mass 
of water withdrawn, MFHR, in pounds (kilograms), or the volume 
of water withdrawn, VFHR, in gallons (liters) with an error no 
greater than 2 percent.
    5.2.4  24-Hour Simulated Use Test
    5.2.4.1  Fixed Input Instantaneous Water Heaters. Establish 
normal operation with the discharge water temperature and flow rate 
set to values of 135 deg.F5 deg.F 
(57.2 deg.C2.8 deg.C) and Vmax, respectively. With 
no draw occurring, record the reading given by the gas meter, the 
scale used for determining oil consumption, and/or the electrical 
energy meter as appropriate. Begin the 24-hour simulated use test by 
drawing an amount of water out of the water heater equivalent to 
one-sixth of the daily hot water usage, 64.3 gallons (243 liters). 
Record the time when this first draw is initiated and designated it 
as an elapsed time, , of 0. At elapsed time intervals of 
one, two, three, four, and five hours from  = 0, initiate 
additional draws removing an amount of water equivalent to one-sixth 
of 64.3 gallons (243 liters), with the maximum allowable deviation 
for any single draw being 0.5 gallons (2 
liters). The quantity of water drawn during the sixth draw shall be 
increased or decreased as necessary such that the total volume of 
water withdrawn equals 64.31.0 gallons (2434 
liters).
    Measurements of the inlet and outlet water temperatures shall be 
made beginning 15 seconds after the draw is initiated and at every 5 
second interval throughout the duration of the draw. The arithmetic 
mean of the hot water discharge temperature and the cold water inlet 
temperature shall be determined for each draw. Record the scale used 
to measure the mass of the withdrawn water or the water meter 
reading, as appropriate, after each draw. At the end of the recovery 
period following the first draw, determine and record the fossil 
fuel or electrical energy consumed, Qr. Following the sixth 
draw and subsequent recovery, allow the water heater to remain in 
the standby mode until exactly 24 hours have elapsed since the start 
of the test, i.e., since  = 0. At 24 hours, record the 
reading given by the gas meter, the scale used for determining oil 
consumption, and/or the electrical energy meter as appropriate. 
Determine the fossil fuel or electrical energy consumed during the 
entire 24-hour simulated use test and designate the quantity as Q.
    5.2.4.2  Variable Input Instantaneous Water Heaters. If the 
instantaneous water heater incorporates a controller that permits 
continuous operation at a reduced input rate, the first three draws 
shall be conducted using the maximum flow rate, Vmax, while 
removing an amount of water equivalent to one-sixth of 64.3 gallons 
(243 liters), with the maximum allowable deviation for any one of 
the three draws being 0.5 gallons (2 liters). The second 
three draws shall be conducted at Vmin. If an outlet 
temperature of 135 deg.F5 deg.F 
(57.2 deg.C2.8 deg.C) could not be achieved at the 
minimum flow rate permitted by the instantaneous water heater, the 
last three draws should be lengthened such that the volume removed 
is:
[GRAPHIC][TIFF OMITTED]TP23MR95.003


or
[GRAPHIC][TIFF OMITTED]TP23MR95.004


where the maximum allowable variation for any one of the three draws 
is  0.5 gallons (2 liters). The quantity of water 
withdrawn during the sixth draw shall be increased or decreased as 
necessary such that the total volume of water withdrawn equals 
(32.15+3 x V4,5,6)1.0 gallons 
((121.7+3 x V4,5,6)3.8 liters).
    Measurements of the inlet and outlet water temperatures shall be 
made beginning 15 seconds after a draw is initiated and at every 5 
second interval throughout the duration of the draw. Determine the 
arithmetic mean of the hot water discharge temperature and the cold 
water inlet temperature for each draw. Record the scale used to 
measure the mass of the withdrawn water or the water meter reading, 
as appropriate, after each draw. At the end of the recovery period 
following the first draw, determine and record the fossil fuel or 
electrical energy consumed, Qr,max. Likewise, record the 
reading of the meter or scale used to measure fossil fuel or 
electrical energy consumption prior to the fourth draw and at the 
end of the recovery period following the fourth draw, and designate 
the difference as Qr,min. Following the sixth draw and 
subsequent recovery, allow the water heater to remain in the standby 
mode until exactly 24 hours have elapsed since the start of the 
test, i.e., since  = 0. At 24 hours, record the reading 
given by the gas meter, the scale used for determining oil 
consumption, and/or the electrical energy meter, as appropriate. 
Determine the fossil fuel or electrical energy consumed during the 
entire 24-hour simulated use test and designate the quantity as Q.

6. Computations

    6.1  Storage Tank and Heat Pump Water Heaters.
    6.1.1  Storage Tank Capacity. The storage tank capacity is 
computed using the following:
[GRAPHIC][TIFF OMITTED]TP23MR95.005


Where:

Vst=the storage capacity of the water heater, gal (L).
Wf=the weight of the storage tank when completely filled with 
water, lbm (kg).
Wt=the (tare) weight of the storage tank when completely empty, 
lbm (kg)
=the density of water use to fill the tank; evaluated based 
on the temperature of the water, lbm/gal (kg/L).

    6.1.2  First Hour Rating Computation. For water heaters where 
the final draw was initiated at or prior to an elapsed time of one 
hour, the first hour rating shall be computed using,
[GRAPHIC][TIFF OMITTED]TP23MR95.006


Where:

n=the number of draws that are completed during the first hour 
rating test.
V*i=the volume of water removed during the ith draw of the 
first hour rating test, gal (L).
[GRAPHIC][TIFF OMITTED]TP23MR95.097


Where:

M*i=the mass of water removed during the ith draw of the first 
hour rating test, lbm (kg).
=the water density corresponding to the average outlet 
temperature measured during the ith draw (T*del,i), lbm/
gal (kg/L).

    For water heaters where a draw was not in progress at the 
elapsed time of one hour and a final draw was imposed at the elapsed 
time of one hour, the first hour rating shall be calculated using,
[GRAPHIC][TIFF OMITTED]TP23MR95.007


where n and V*i are the same quantities as defined above and,

T*del,n-1=the average water outlet temperature measured during 
the (n-1)th draw of the first hour rating test,  deg.F ( deg.C).
T*del,n=the average water outlet temperature measured during 
the nth (final) draw of the first hour rating test,  deg.F ( deg.C).
T*min,n-1=the minimum water outlet temperature measured during 
the (n-1)th draw of the first hour rating test,  deg.F ( deg.C).

    [[Page 15347]] 6.1.3  Recovery Efficiency. The recovery 
efficiency for gas, oil, and heat pump storage type water heaters is 
computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.008


Where:

M1=total mass removed during the first draw of the 24-hour 
simulated use test, lbm (kg).
  =V1  x  i
V1=total volume removed during the first draw of the 24-hour 
simulated use test, gal (L).
1=density of the water as evaluated at the water 
temperature at the point where the flow volume is measured, 
lbm/gal (kg/L).
C1=specific heat of the withdrawn water as evaluated 
at (Tdel,1 + Tin,1)/2 Btu/lbm deg.F (kJ/
kgK).
Tdel,1=average water outlet temperature measured during the 
first draw of the 24-hour simulated use test, deg.F ( deg.C).
Tin,1=average water inlet temperature measured during the first 
draw of the 24-hour simulated use test, deg.F ( deg.C).
Vst=measured volume of the storage tank, as determined in 
section 6.1.1, gal (L).
2=density of stored hot water evaluated at (Tmax, 
1+To)/2, lbm/gal (kg/L).
C2=specific heat of stored hot water evaluated at 
(Tmax,1+To)/2, Btu/lbm deg.F (kJ/
kgK).
Tmax,1=maximum mean tank temperature recorded after cut-out 
following the first draw of the 24-hour simulated use test,  deg.F 
( deg.C).
To=maximum mean tank temperature recorded prior to the first 
draw of the 24-hour simulated use test,  deg.F ( deg.C).
Qres,1=electrical energy used by the supplemental resistive 
elements of a heat pump water heater during the first recovery of 
the 24-hour simulated use test, Wh.
cmp,1=the total operating time of the compressor of a 
heat pump water heater during the first recovery of the 24-hour 
simulated use test, hr.
Qr=the total energy used by the water heater between cut-out 
prior to the first draw and cutout following the first draw, 
including auxiliary energy such as pilot lights, pumps, fans, etc., 
Btu (MJ). (electrical auxiliary energy shall be converted to thermal 
energy using the following conversion: 1 Kwh=3412 Btu).

    The recovery efficiency for electric water heaters with immersed 
heating elements is assumed to be 98 percent.
    6.1.4  Hourly Standby Losses. The hourly standby losses are 
computed as
Where:

[GRAPHIC][TIFF OMITTED]TP23MR95.009


Qhr=the hourly standby energy losses of the water heater, Btu/
hr (kJ/hr).
Qstby=the total energy consumed by the water heater between the 
time at which the maximum mean tank temperature is observed after 
the sixth draw and the end of the 24-hour test period, Btu (kJ).
Vst=measured volume of the storage tank, as determined in 
section 6.1.1, gal (L).
=density of stored hot water as evaluated at, 
(T24+Tsu)/2, lbm/gal (kg/L).
C=specific heat of the stored water as evaluated at 
(T24+Tsu)/2, Btu/lbm deg.F (kJ/
kg deg.C).
T24=the mean tank temperature at the end of the 24-hour 
simulated use test,  deg.F ( deg.C).
Tsu=maximum mean tank temperature observed after the sixth 
draw,  deg.F ( deg.C).
stby,1=elapsed time between the time at which the 
maximum mean tank temperature is observed after the sixth draw and 
the end of the 24-hour simulated use test, hr.

    The standby heat loss coefficient for the tank is computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.010


Where:

Qhr=defined in section 6.1.4.
Tt,stby=overall average storage tank temperature between the 
time when the maximum mean tank temperature is observed after the 
sixth draw and the end of the 24-hour simulated use test,  deg.F 
( deg.C).
Ta,stby=overall average ambient temperature between the time 
when the maximum mean tank temperature is observed after the sixth 
draw and the end of the 24-hour simulated use test,  deg.F ( deg.C).
UA=standby heat loss coefficient of the storage tank, Btu/
hr deg.F (kJ/hr deg.C).
    6.1.5  Daily Water Heating Energy Consumption. The daily water 
heating energy consumption, Qd is computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.011


Where:

Q=total energy used by the water heater during the 24-hour simulated 
use test including auxiliary energy such as pilot lights, pumps, 
fans, etc., Btu (kJ) (Electrical auxiliary energy shall be converted 
to thermal energy using the following conversion: 1 kWh = 3412 Btu).
Vst=measured volume of the storage tank, as determined in 
section 6.1.1, gal (L).
=density of the stored hot water as evaluated at 
(T24+To)/2, lbm/gal (kg/L).
C=specific heat of the stored water as evaluated at 
(T24+To)/2, Btu/lbm deg.F (kJ/
kg deg.C).
T24=mean tank temperature at the end of the 24-hour simulated 
use test,  deg.F ( deg.C).
To=mean tank temperature at the beginning of the 24-hour 
simulated use test, recorded one minute before the first draw is 
initiated,  deg.F ( deg.C).
r=recovery efficiency of the hot water heater, 
dimensionless.

    6.1.6  Adjusted Daily Water Heating Energy Consumption. The 
adjusted daily water heating energy consumption, Qda takes into 
account that the temperature difference between the storage tank and 
surrounding ambient temperature may not be the nominal value of 
67.5 deg.F (135 deg.F-67.5 deg.F) or 37.5 deg.C (57.2 deg.C-
19.7 deg.C) due to the 10 deg.F (5.6 deg.C) allowable variation in 
storage tank temperature, 1355 deg.F 
(57.22.8 deg.C), and the 5 deg.F (2.8 deg.C) allowable 
variation in surrounding ambient temperature 65 deg.F (18.3 deg.C) 
to 70 deg.F (21.1 deg.C). The adjusted daily water heating energy 
consumption is computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.012


Where:

Qda=the adjusted daily water heating energy consumption, in Btu 
(kJ).
Tstby=the mean tank temperature during the total standby 
portion, stby,2, of the 24-hour test, in  deg.F 
( deg.C).
Ta,stby=the average ambient temperature during the total 
standby portion, stby,2, of the 24-hour test, in 
deg.F ( deg.C).
UA=the standby heat loss coefficient for the storage tank, in Btu/
hr deg.F (kJ/hr deg.C).
stby,2=the number of hours during the 24-hour 
simulated test when water was not being withdrawn from the water 
heater.

    A modification is also needed to take into account that the 
temperature difference between the outlet water temperature and 
supply water temperature may not be equivalent to the nominal value 
of 77 deg.F (135 deg.F-58 deg.F) or 42.8 deg.C 
(57.2 deg.C-14.4 deg.C). The following equations adjust the 
experimental data to a nominal 77 deg.F (42.8 deg.C) temperature 
rise.
    The energy used to heat water, Btu/day (kJ/day) may be computed 
as:
[GRAPHIC][TIFF OMITTED]TP23MR95.013


Where:

Mi=the mass withdrawn for the ith draw (i=1 to 6), in lbm 
(kg).
Ci=the specific heat of water, in Btu/lbm deg.F 
(kJ/kg deg.C). [[Page 15348]] 
Tdel,i=the average water outlet temperature measured during the 
ith draw (i=1 to 6),  deg.F( deg.C).
Tin,i=the average water inlet temperature measured during the 
ith draw (i=1 to 6),  deg.F( deg.C).
r=as defined in section 6.1.3.

    The energy required to heat the same quantity of water over a 
77 deg.F (42.8 deg.C) temperature rise, Btu/day (kJ/day), is:
[GRAPHIC][TIFF OMITTED]TP23MR95.014


    The difference between these two values is:
[GRAPHIC][TIFF OMITTED]TP23MR95.098


which must be added to the adjusted daily water heating energy 
consumption value. Thus, the daily energy consumption value which 
takes into account that the temperature difference between the 
storage tank and ambient temperature may not be 67.5 deg.F 
(37.5 deg.C) and the temperature rise across the storage tank may 
not be 77 deg.F (42.8 deg.C) is:
[GRAPHIC][TIFF OMITTED]TP23MR95.015


    6.1.7  Energy Factor. The energy factor, Ef, is computed 
as:
[GRAPHIC][TIFF OMITTED]TP23MR95.016


or
[GRAPHIC][TIFF OMITTED]TP23MR95.017


Where:

Qdm=the modified daily water heating energy consumption as 
computed in accordance with section 6.1.6, in Btu (kJ).
Mi=as defined in section 6.1.6.
Ci=as defined in section 6.1.6.

    6.1.8  Annual Energy Consumption. The annual energy consumption 
for storage type and heat pump water heaters is computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.018


Where:

Qdm=the modified daily energy consumption value, Btu/day (kJ/
day), and 365 is the number of days in a year.
    6.2  Instantaneous Hot Water Heaters.
    6.2.1  First Hour Rating Computation. Compute the first hour 
rating as:
[GRAPHIC][TIFF OMITTED]TP23MR95.019


which may be expressed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.020


Where:

MFHR=the mass removed during the one hour continuous draw, in 
lbm (kg).
Tdel=the average delivery temperature, in  deg.F ( deg.C).
Tin=the average inlet temperature, in  deg.F ( deg.C).
=the density of water at the average delivery temperature, 
in lbm/gal (kg/L).

    If a water meter is used in lieu of a scale the first hour 
rating is computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.021


Where:

V=the volume of water removed during the one hour continuous draw, 
in gallons (liters).
Tdel=defined in section 6.2.1.
Tin=defined in section 6.2.1.

    6.2.2  Recovery Efficiency
    6.2.2.1  Fixed Input Instantaneous Water Heaters. The recovery 
efficiency is computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.022


Where:

    M1=the mass withdrawn during the first draw of the 24-hour 
simulated use test, lbm (kg).
    C1=the specific heat of water at the average 
temperature (Tdel,1+Tin,1)/2, Btu/lbm deg.F 
(kJ/kg deg.C).
    Tdel,1=the average temperature for the first draw,  deg.F 
( deg.C).
    Tin,1=the average inlet temperature for the first draw, 
deg.F ( deg.C).
    Qr=the total energy used by the water heater between cutout 
prior to the first draw and cut-out following the first draw, 
including auxiliary energy such as pilot lights, pumps, fans, etc., 
Btu (kJ).

    6.2.2.2.  Variable Input Instantaneous Water Heaters. For 
instantaneous water heaters which have a variable firing rate, two 
recovery efficiency values are computed, one at the maximum input 
rate and one at the minimum input rate. The recovery efficiency used 
in subsequent computations is taken as the average of these two 
values. The maximum recovery efficiency is computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.023


Where:

M1=defined in section 6.2.2.1.
C1=defined in section 6.2.2.1.
Tdel,1=defined in section 6.2.2.1.
Tin,1=defined in section 6.2.2.1.
Qr,max=the total energy used by the water heater between cut-
out prior to the first draw and cut-out following the first draw, 
including auxiliary energy such as pilot lights, Btu (kJ).

    The minimum recovery efficiency is computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.024


Where:

M4=the mass withdrawn during the fourth draw, in lbm (kg).
C4=the specific heat of water, in Btu/
lbm deg.F (kJ/kg deg.C).
Tdel,4=the average delivery temperature for the fourth draw, in 
 deg.F ( deg.C).
Tin,4=the average inlet temperature for the fourth draw, in 
deg.F ( deg.C).
Qr,min=the total energy consumed immediately prior to the 
fourth draw and cut-out following the fourth draw, including 
auxiliary energy such as pilot lights, in Btu (kJ).

    The recovery efficiency is computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.025


Where:

r,max=defined in section 6.2.2.2.
r,min=defined in section 6.2.2.2.

    6.2.3  Daily Water Heating Energy Consumption. The daily water 
heating energy consumption, Qd is computed as:

Qd=Q

Where:

Q=the energy used by the flow actuated water heater during the 24-
hour simulated use test.
    A modification is needed to take into account that the 
temperature difference between the outlet water temperature and 
supply water temperature may not be equivalent to the nominal value 
of 77 deg.F (135 deg.F-58 deg.F) or 42.8 deg.C 
(57.2 deg.C-14.4 deg.C). The following equations adjust the 
experimental data to a nominal 77 deg.F (42.8 deg.C) temperature 
rise.
    The energy used to heat water may be computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.026


Where:

[[Page 15349]] Mi=the mass withdrawn during the ith draw, in 
lbm (kg).
Ci=the specific heat of water of the ith draw, in Btu/
lbm deg.F(kJ/kg deg.C).
Tdel,i=the average delivery temperature of the ith draw, in 
deg.F( deg.C).
Tin,i=the average inlet temperature of the ith draw, in 
deg.F( deg.C).
r=defined in section 6.2.2.2.

    The energy required to heat the same quantity of water over a 
77 deg.F (42.8 deg.C) temperature rise is:
[GRAPHIC][TIFF OMITTED]TP23MR95.027


Where:

Mi=defined above.
Ci=defined above.
r=defined in above.

    The difference between these two values is:
[GRAPHIC][TIFF OMITTED]TP23MR95.028


which must be added to the daily water heating energy consumption 
value. Thus, the daily energy consumption value which takes into 
account that the temperature rise across the storage tank may not be 
77 deg.F (42.8 deg.C) is:
[GRAPHIC][TIFF OMITTED]TP23MR95.029


    6.2.4  Energy Factor. The energy factor, Ef, is computed 
as:
[GRAPHIC][TIFF OMITTED]TP23MR95.030


Where:

Qdm=the daily water heating energy consumption as computed in 
accordance with Section 6.2.3, in Btu (kJ).
Mi=the mass associated with the ith draw, in lbm (kg).
Ci=the specific heat of water computed at a 
temperature of (58 deg.F+135 deg.F)/2, Btu/lbm deg.F 
[(14.4 deg.C+57.2 deg.C)/2, kJ/kg deg.C].
Tdel,i=the average delivery temperature of the ith draw, in 
deg.F( deg.C).
Tin,i=the average inlet temperature of the ith draw, in 
deg.F( deg.C).

    6.2.5  Annual Energy Consumption. The annual energy consumption 
for instantaneous type water heaters is computed as:
[GRAPHIC][TIFF OMITTED]TP23MR95.031


Where:

Qdm=the modified daily energy consumption, in Btu/day (kJ/day) 
and 365 is the number of days within a year.

7. Ratings for Untested Models

    In order to relieve the test burden to manufacturers who offer 
water heaters which differ only in fuel type or power input, ratings 
for untested models may be established in accordance with the 
following procedures. In lieu of the following procedures a 
manufacturer may elect to test the unit for which a rating is 
sought.
    7.1  Gas Water Heaters. Ratings obtained for gas water heaters 
using natural gas can be used for an identical water heater which 
utilizes propane gas if the input ratings are within 10 percent.
    7.2  Electric Water Heaters
    7.2.1  First Hour Rating. If an electric storage type water 
heater is available with more than one input rating, the 
manufacturer shall designate the standard input rating and the water 
heater need only be tested with heating elements at the designated 
standard input ratings. The first hour ratings for units having 
power input rating less than the designated standard input rating 
shall be assigned a first hour rating equivalent to the first draw 
of the first hour rating for the electric water heater with the 
standard input rating. For units having power inputs greater than 
the designated standard input rating, the first hour rating shall be 
equivalent to that measured for the water heater with the standard 
input rating.
    7.2.2  Energy Factor. The energy factor for identical electric 
storage type water heaters, with the exception of heating element 
wattage, may use the energy factor obtained during testing of the 
water heater with the designated standard input rating.
    5. Appendix I to subpart B of part 430 is revised to read as 
follows:

Appendix I to Subpart B of Part 430--Uniform Test Method for Measuring 
the Energy Consumption of Conventional Ranges, Conventional Cooking 
Tops, Conventional Ovens, and Microwave Ovens

1. Definitions

    1.1  Built-in means the product is supported by surrounding 
cabinetry, walls, or other similar structures.
    1.2  Drop-in means the product is supported by horizontal 
surface cabinetry.
    1.3  Forced convection means a mode of conventional oven 
operation in which a fan is used to circulate the heated air within 
the oven compartment during cooking.
    1.4  Freestanding means the product is not supported by 
surrounding cabinetry, walls, or other similar structures.
    1.5  IEC 705 refers to the test standard published by the 
International Electrotechnical Commission, entitled ``Method for 
Measuring the Performance of Microwaves Ovens for Household and 
Similar Purposes,'' Publication 705, Amendment 2-1993.
    1.6  Normal nonoperating temperature means the temperature of 
all areas of an appliance to be tested that is within 5 degrees 
(2.8 deg.C) of the temperature that the identical areas of the same 
basic model of the appliance would attain if it remained in the test 
room for 24 hours while not operating with all oven doors closed and 
with any gas pilot lights on and adjusted in accordance with 
manufacturer's instructions.
    1.7  Primary energy consumption means either the electrical 
energy consumption of a conventional electric oven or the gas energy 
consumption of a conventional gas oven.
    1.8  Secondary energy consumption means any electrical energy 
consumption, other than clock energy consumption, of a conventional 
gas oven.
    1.9  Standard cubic foot (L) of gas means that quantity of gas 
that occupies 1 cubic foot (L) when saturated with water vapor at a 
temperature of 60 deg.F (15.6 deg.C) and a pressure of 30 inches of 
mercury (101.6 kPa) (density of mercury equals 13.595 grams per 
cubic centimeter).
    1.10  Thermocouple means a device consisting of two dissimilar 
metals which are joined together and, with their associated wires, 
are used to measure temperature by means of electromotive force.

2. Test Conditions

    2.1  Installation. A free standing appliance shall be installed 
with the back directly against, or as near as possible to, a 
vertical wall which extends at least 1 foot above and on either side 
of the appliance. There shall be no side walls. A drop-in, built-in 
or wall-mounted appliance shall be installed in an enclosure in 
accordance with the manufacturer's instructions. These appliances 
are to be completely assembled with all handles, knobs, guards and 
the like mounted in place. Any electric resistance heaters, gas 
burners, baking racks, and baffles shall be in place in accordance 
with the manufacturer's instructions; however, broiler pans are to 
be removed from the oven's baking compartment.
    Disconnect any electrical clock which uses energy continuously, 
except for the microwave oven. Do not disconnect or modify the 
circuit to any other electrical devices or features, except as 
indicated in section 2.1.3.
    2.1.1  Conventional electric ranges, ovens, and cooking tops. 
These products shall be connected to an electrical supply circuit 
with voltage as specified in section 2.2.1 with a watt-hour meter 
installed in the circuit. The watt-hour meter shall be as described 
in section 2.9.1.1.
    2.1.2  Conventional gas ranges, ovens, and cooking tops. These 
products shall be connected to a gas supply line with a gas meter 
installed between the supply line and the appliance being tested, 
according to manufacturer's specifications. The gas meter shall be 
as described in section 2.9.2. Conventional gas ranges, ovens and 
cooking tops with electrical ignition devices or other electrical 
components shall be connected to an electrical supply circuit of 
nameplate voltage with a watt-hour meter installed in the circuit. 
The watt-hour meter shall be as described in section 2.9.1.1.
    2.1.3  Microwave ovens. Install the microwave oven in accordance 
with the manufacturer's instructions and connect to 
[[Page 15350]] an electrical supply circuit with voltage as 
specified in section 2.2.1. A watt meter and watt-hour meter shall 
be installed in the circuit and shall be as described in section 
2.9.1.1. and 2.9.1.2. If trial runs are needed to set the ``on'' 
time for the test, the test measurements are to be separated 
according to section 4, Paragraph 12.6 of IEC 705.
    2.2  Energy supply.
    2.2.1  Electrical supply. Maintain the electrical supply to the 
conventional range, conventional cooking top, and conventional oven 
being tested at 240/120 volts except that basic models rated only at 
208/120 volts shall be tested at that rating. Maintain the voltage 
within 2 percent of the above specified voltages, except for the 
microwave oven testing. Maintain the electrical supply to a 
microwave oven at 120 volts  1 volt and at 60 hertz.
    2.2.2  Gas supply.
    2.2.2.1  Gas burner adjustments. Conventional gas ranges, ovens, 
and cooking tops shall be tested with all of the gas burners 
adjusted in accordance with the installation or operation 
instructions provided by the manufacturer. In every case, the burner 
must be adjusted with sufficient air flow to prevent a yellow flame 
or a flame with yellow tips.
    2.2.2.2  Natural gas. For testing convertible cooking appliances 
or appliances which are designed to operate using only natural gas, 
maintain the natural gas pressure immediately ahead of all controls 
of the unit under test at 7 to 10 inches of water column (1743.6 to 
2490.8 Pa). The regulator outlet pressure shall equal the 
manufacturer's recommendation. The natural gas supplied should have 
a heating value of approximately 1,025 Btu's per standard cubic foot 
(38.2 kJ/L). The actual gross heating value, Hn, in Btu's per 
standard cubic foot (kJ/L), for the natural gas to be used in the 
test shall be obtained either from measurements made by the 
manufacturer conducting the test using equipment that meet the 
requirements described in section 2.9.4 or by the use of bottled 
natural gas whose gross heating value is certified to be at least as 
accurate a value that meet the requirements in section 2.9.4.
    2.2.2.3  Propane. For testing convertible cooking appliances 
with propane or for testing appliances which are designed to operate 
using only LP-gas, maintain the propane pressure immediately ahead 
of all controls of the unit under test at 11 to 13 inches of water 
column (2740 to 3238 Pa). The regulator outlet pressure shall equal 
the manufacturer's recommendation. The propane supplied should have 
a heating value of approximately 2,500 Btu's per standard cubic foot 
(93.15 kJ/L). The actual gross heating value, Hp, in Btu's per 
standard cubic foot (kJ/L), for the propane to be used in the test 
shall be obtained either from measurements made by the manufacturer 
conducting the test using equipment that meet the requirements 
described in section 2.9.4 or by the use of bottled propane whose 
gross heating value is certified to be at least as accurate a value 
that meet the requirements described in section 2.9.4.
    2.2.2.4  Test gas. A basic model of a convertible cooking 
appliance shall be tested with natural gas, but may also be tested 
with propane. Any basic model of a conventional range, conventional 
cooking top, or conventional oven which is designed to operate using 
only natural gas as the energy source must be tested with natural 
gas. Any basic model of a conventional range, conventional cooking 
top, or conventional oven which is designed to operate using only LP 
gas as the gas energy source must be tested with propane gas.
    2.3  Air circulation. Maintain air circulation in the room 
sufficient to secure a reasonably uniform temperature distribution, 
but do not cause a direct draft on the unit under test.
    2.4  Setting the conventional oven thermostat.
    2.4.1  Conventional electric oven. Install a thermocouple 
approximately in the center of the usable baking space. Provide a 
temperature indicator system for measuring the oven's temperature 
with an accuracy as indicated in section 2.9.3.2. If the oven 
thermostat does not cycle on and off, adjust or determine the 
conventional electric oven thermostat setting to provide an average 
internal temperature which is 325 deg.5 deg.F 
(162.8 deg.2.8 deg.C) higher than the room ambient air 
temperature. If the oven thermostat operates by cycling on and off, 
adjust or determine the conventional electric oven thermostat 
setting to provide an average internal temperature which is 
325 deg.5 deg.F (162.8 deg.2.8 deg.C) higher 
than the room ambient air temperature. This shall be done by 
measuring the maximum and minimum temperatures in any three 
consecutive cut-off/cut-on actions of the electric resistance 
heaters, excluding the initial cut-off/cut-on action, by the 
thermostat after the temperature rise of 325 deg.5 deg.F 
(162.8 deg.2.8 deg.C) has been attained by the 
conventional electric oven. Remove the thermocouple after the 
thermostat has been set.
    2.4.2  Conventional gas oven. Install five parallel-connected 
weighted thermocouples, one located at the center of the 
conventional gas oven's usable baking space and the other four 
equally spaced between the center and the corners of the 
conventional gas oven on the diagonals of a horizontal plane through 
the center of the conventional gas oven. Each weighted thermocouple 
shall be constructed of a copper disc that is 1-inch (25.4 mm) in 
diameter and \1/8\-inch (3.2 mm) thick. The two thermocouple wires 
shall be located in two holes in the disc spaced \1/2\-inch (12.7 
mm) apart, with each hole being located \1/4\-inch (6.4 mm) from the 
center of the disc. Both thermocouple wires shall be silver-soldered 
to the copper disc. Provide a temperature indicator system for 
measuring the oven's temperature with an accuracy as indicated in 
section 2.9.3.2. If the oven thermostat does not cycle on or off, 
adjust or determine the conventional gas oven thermostat setting to 
provide an average internal temperature which is 
325 deg.5 deg.F (162.8 deg.2.8 deg.C) higher 
than the room ambient air temperature. If the oven thermostat 
operates by cycling on and off, adjust or determine the conventional 
gas oven thermostat setting to provide an average internal 
temperature which is 325 deg.5 deg.F 
(162.82.8 deg.C) higher than the room ambient air 
temperature. This shall be done by measuring the maximum and minimum 
temperatures in any three consecutive cut-off/cut-on actions of the 
gas burners, excluding the initial cut-off/cut-on action, by the 
thermostat after the temperature rise of 325 deg.5 deg.F 
(162.8 deg.2.8 deg.C) has been attained by the 
conventional gas oven. Remove the thermocouple after the thermostat 
has been set.
    2.5  Ambient room air temperature. During the test, maintain an 
ambient room air temperature, TR, of 77 deg.9 deg.F 
(25 deg.5 deg.C) for conventional ovens and cooking 
tops, or as indicated in section 4, Paragraph 12.4 of IEC 705 for 
microwave ovens as measured at least 5 feet (1.5 m) and not more 
than 8 feet (2.4 m) from the nearest surface of the unit under test 
and approximately 3 feet (.9 m) above the floor. The temperature 
shall be measured with a thermometer or temperature indicating 
system with an accuracy as indicated in section 2.9.3.1.
    2.6  Normal nonoperating temperature. All areas of the appliance 
to be tested shall attain the normal nonoperating temperature, as 
defined in section 1.6, before any testing begins. The equipment for 
measuring the applicable normal nonoperating temperature shall be as 
described in sections 2.9.3.1, 2.9.3.2, 2.9.3.4, and 2.9.3.5, as 
applicable.
    2.7  Test blocks for conventional oven and cooking top. The test 
blocks shall be made of aluminum alloy No. 6061, with a specific 
heat of 0.23 Btu/lb- deg.F (0.96 kJ/[kg deg.C]) and with any temper 
that will give a coefficient of thermal conductivity of 2.6 to 2.8 
BTU-in/in-ft\2\- deg.F (154.8 to 171.5 W/[m deg.C]). Each block 
shall have a hole at its top. The hole shall be 0.08 inch (2.03 mm) 
in diameter and 0.80 inch (20.3 mm) deep. The manufacturer 
conducting the test may provide other means which will ensure that 
the thermocouple junction is installed at this same position and 
depth.
    The bottom of each block shall be flat to within 0.002 inch 
(0.051 mm) TIR (total indicator reading). Determine the actual 
weight of each test block with a scale with an accuracy as indicated 
in section 2.9.5.
    2.7.1  Conventional oven test block. The test block for the 
conventional oven, W1, shall be 6.250.05 inch 
(158.81.3 mm) in diameter, approximately 2.8 inches (71 
mm) high and shall weigh 8.50.1 lbs 
(3.860.05 kg). The block shall be finished with an 
anodic black coating which has a minimum thickness of 0.001 inch 
(0.025 mm) or with a finish having the equivalent absorptivity.
    2.7.2  Small test block for conventional cooking top. The small 
test block, W2, shall be 6.250.05 inches 
(158.81.3 mm) in diameter, approximately 2.8 inches (71 
mm) high and shall weigh 8.50.1lbs (3.860.05 
kg).
    2.7.3  Large test block for conventional cooking top. The large 
test block for the conventional cooking top, W3, shall be 
90.05 inches (228.61.3 mm) in diameter, 
approximately 3.0 inches (76 mm) high and shall weigh 
190.1 lbs (8.620.05 kg).
    2.7.4  Thermocouple installation. Install the thermocouple such 
that the thermocouple junction (where the thermocouple contacts the 
test block) is at the bottom of the hole provided in the test block 
and that the thermocouple junction makes good thermal contact with 
the aluminum block. If the test [[Page 15351]] blocks are to be 
water cooled between tests the thermocouple hole should be sealed, 
or other steps taken, to insure that the thermocouple hole is 
completely dry at the start of the next test. Provide a temperature 
indicator system for measuring the test block temperature with an 
accuracy as indicated in section 2.9.3.3.
    2.7.5  Initial test block temperature. Maintain the initial 
temperature of the test blocks, TI, within 4 deg.F 
(2.2 deg.C) of the ambient room air temperature as 
specified in section 2.5. If the test block has been cooled (or 
heated) to bring it to room temperature, allow the block to 
stabilize for at least 2 minutes after removal from the cooling (or 
heating) source, before measuring its initial temperature.
    2.8  Microwave oven test load.
    2.8.1  Test container. The test container shall be as specified 
in section 4, Paragraph 12.2 of IEC 705.
    2.8.2  Test water load. The test water load shall be as 
specified in section 4, Paragraph 12.1 of IEC 705.
    2.8.2.1  Test water load and test container temperature. Before 
the start of the test, the oven and the test container shall be at 
ambient temperature as specified in section 4, Paragraph 12.4 of IEC 
705. The test water load shall be contained in a chiller (not the 
test container) and maintained at 18 deg.1.8 deg.F 
(10 deg.1 deg.C) below the ambient room temperature.
    2.9  Instrumentation. Perform all test measurements using the 
following instruments, as appropriate:
    2.9.1  Electrical Measurements.
    2.9.1.1  Watt-hour meter. The watt-hour meter for measuring the 
electrical energy consumption of conventional ovens and cooking tops 
shall have a resolution of at least 1 watt-hour (3.6 kJ) and a 
maximum error no greater than 1.5 percent of the measured value. The 
watt-hour meter for measuring the energy consumption of microwave 
ovens shall have a resolution of at least 0.1 watt-hour (.36 kJ) and 
a maximum error no greater than 1.5 percent of the measured value.
    2.9.1.2  Wattmeter. The wattmeter used to measure the 
conventional oven, conventional range, microwave/conventional range 
clock power or the power input of the microwave shall have a 
resolution of at least 0.2 watt (0.2 J/s) and a maximum error no 
greater than 5 percent of the measured value.
    2.9.2  Gas Measurements.
    2.9.2.1  Positive displacement meters. The gas meter to be used 
for measuring the gas consumed by the gas burners of the oven or 
cooking top shall have a resolution of at least 0.01 cubic foot 
(0.28 L) and a maximum error no greater than 1 percent of the 
measured value. If a positive displacement gas meter is used for 
measuring the gas consumed by the pilot lights, it shall have a 
resolution of at least 0.01 cubic foot (0.28 L) and have a maximum 
error no greater than 2 percent of the measured value.
    2.9.2.2  Flow meter. If a gas flow meter is used for measuring 
the gas consumed by the pilot lights, it shall be calibrated to have 
a maximum error no greater than 1.5 percent of the measured value 
and a resolution of at least 1 percent of the measured value.
    2.9.3  Temperature measurement equipment.
    2.9.3.1  Room temperature indicating system. The room 
temperature indicating system shall be as specified in section 4, 
Paragraph 12.3 of IEC 705.
    2.9.3.2  Temperature indicator system for measuring conventional 
oven temperature. The equipment for measuring the conventional oven 
temperature shall have an error no greater than 4 deg.F 
(2.2 deg.C) over the range of 65 deg. to 500 deg.F 
(18 deg.C to 260 deg.C).
    2.9.3.3  Temperature indicator system for measuring test block 
temperature. The system shall have an error no greater than 
2 deg.F (1.1 deg.C) when measuring specific 
temperatures over the range of 65 deg. to 330 deg.F (18.3 deg.C to 
165.6 deg.C). It shall also have an error no greater than 
2 deg.F (1.1 deg.C) when measuring any 
temperature difference up to 240 deg.F (115.6 deg.C) within the 
above range.
    2.9.3.4  Test load temperatures. The thermometer or other 
temperature measuring instrument used to measure the test water load 
temperature shall be as specified in section 4, Paragraph 12.3 of 
IEC 705. Use only one thermometer or other temperature measuring 
device throughout the entire test procedure.
    2.9.3.5  Temperature indicator system for measuring surface 
temperatures. The temperatures of an external surface of an 
appliance shall be measured by means of a thermocouple in firm 
contact with the surface. The temperature indicating system shall 
have an error no greater than .45 deg.F 
(0.25 deg.C) over the range 65 deg. to 90 deg.F 
(18 deg.C to 32 deg.C).
    2.9.4  Heating Value. The heating value of the natural gas or 
propane shall be measured with an instrument and associated readout 
device that has a maximum error no greater than .5% of the measured 
value and a resolution of .2% or less of the full scale reading of 
the indicator instrument. The heating value of natural gas or 
propane must be corrected for local temperature and pressure 
conditions.
    2.9.5  Scale. The scale used for weighing the test blocks shall 
have a maximum error no greater than 1 ounce (28.4 g). The scale 
used for weighing the microwave oven test water load shall be as 
specified in section four, paragraph 12.3 of IEC 705.

3. Test Methods and Measurements

    3.1  Test methods.
    3.1.1  Conventional oven. Perform a test by establishing the 
testing conditions set forth in section 2, ``TEST CONDITIONS,'' of 
this appendix, and adjust any pilot lights of a conventional gas 
oven in accordance with the manufacturer's instructions and turn off 
the gas flow to the conventional cooking top, if so equipped.
    Before beginning the test, the conventional oven shall be at its 
normal nonoperating temperature as defined in section 1.6 and 
described in section 2.6. Set the conventional oven test block W1 
approximately in the center of the usable baking space. If there is 
a selector switch for selecting the mode of operation of the oven, 
set it for normal baking. If an oven permits baking by either forced 
convection by using a fan, or without forced convection, the oven is 
to be tested in each of those two modes. If the oven thermostat does 
not cycle on and off, adjust or determine the conventional electric 
oven thermostat setting to provide an average internal temperature 
which is 325 deg.5 deg.F 
(162.8 deg.2.8 deg.C) air temperature. If the oven 
thermostat operates by cycling on and off, adjust or determine the 
conventional electric oven thermostat setting to provide an average 
internal temperature which is 325 deg.5 deg.F 
(162.8 deg.2.8 deg.C) higher than the room ambient air 
temperature. The oven shall remain on for at least one complete 
thermostat ``cut-off/cut-on'' of the electrical resistance heaters 
or gas burners after the test block temperature has increased 
234 deg.F (112.2 deg.C) above its initial temperature.
    3.1.1.1  Self-cleaning operation of a conventional oven. 
Establish the test conditions set forth in section 2, ``TEST 
CONDITIONS,'' of this Appendix. Adjust any pilot lights of a 
conventional gas oven in accordance with the manufacturer's 
instructions and turn off the gas flow to the conventional cooking 
top. The temperature of the conventional oven shall be its normal 
nonoperating temperature as defined in section 1.6 and described in 
section 2.6. Then set the conventional oven's self-cleaning process 
in accordance with the manufacturer's instructions. If the self-
cleaning process is adjustable, use the average time recommended by 
the manufacturer for a moderately soiled oven.
    3.1.1.2  Continuously burning pilot lights of a conventional gas 
oven. Establish the test conditions set forth in section 2, ``TEST 
CONDITIONS,'' of this appendix. Adjust any pilot lights of a 
conventional gas oven in accordance with the manufacturer's 
instructions and turn off the gas flow to the conventional cooking 
top. If a positive displacement gas meter is used the, test duration 
shall be sufficient to measure a gas consumption which is at least 
200 times the resolution of the gas meter.
    3.1.2  Conventional cooking top. Establish the test conditions 
set forth in section 2, ``TEST CONDITIONS,'' of this appendix. 
Adjust any pilot lights of a conventional gas cooking top in 
accordance with the manufacturer's instructions and turn off the gas 
flow to the conventional oven(s), if so equipped. The temperature of 
the conventional cooking top shall be its normal nonoperating 
temperature as defined in section 1.6 and described in section 2.6. 
Set the test block in the center of the surface unit under test. The 
small test block, W2, shall be used on electric surface units 
of 7 inches (178 mm) or less in diameter. The large test block, 
W3, shall be used on electric surface units over 7 inches 
(177.8 mm) in diameter and on all gas surface units. Turn on the 
surface unit under test and set its energy input rate to the maximum 
setting (100 percent). When the test block reaches 144 deg.F 
(62.2 deg.C) above its initial test block temperature, immediately 
reduce the energy input rate to 255 percent of the 
maximum energy input rate. After 150.1 minutes at the 
reduced energy setting, turn off the surface unit under test.
    3.1.2.1  Continuously burning pilot lights of a conventional gas 
cooking top. Establish the test conditions set forth in section 2, 
``TEST CONDITIONS,'' of this appendix. [[Page 15352]] Adjust any 
pilot lights of a conventional gas cooking top in accordance with 
the manufacturer's instructions and turn off the gas flow to the 
conventional oven(s). If a positive displacement gas meter is used, 
the test duration shall be sufficient to measure a gas consumption 
which is at least 200 times the resolution of the gas meter.
    3.1.3  Microwave oven.
    3.1.3.1  Microwave oven test energy or power output. Establish 
the testing conditions set forth in section 2, ``TEST CONDITIONS,'' 
of this appendix. Follow the test procedure as specified in section 
4, Paragraph 12.4 of IEC 705.
    3.2  Test measurements.
    3.2.1  Conventional oven test energy consumption. If the oven 
thermostat controls the oven temperature without cycling on and off, 
measure the energy consumed, EO, when the temperature of the 
block reaches TO (TO is 234 deg.F (112.2 deg.C) above the 
initial block temperature, TI). If the oven thermostat operates 
by cycling on and off, make the following series of measurements: 
Measure the block temperature, TA, and the energy consumed, 
EA, at the end of the last ``ON'' period of the conventional 
oven before the block reaches TO. Measure the block 
temperature, TB, and the energy consumed, EB, at the 
beginning of the next ``ON'' period. Measure the block temperature, 
TC, and the energy consumed, EC, at the end of that ``ON'' 
period. Measure the block temperature, TD, and the energy 
consumed, ED, at the beginning of the following ``ON'' period. 
Energy measurements for EO, EA, EB, EC and 
ED should be expressed in watt-hours for conventional electric 
ovens or standard cubic feet (L) of gas for conventional gas ovens. 
For a gas oven, measure in watt-hours any electrical energy, 
EIO, consumed by an ignition device or other electrical 
components required for the operation of a conventional gas oven 
while heating the test block to TO.
    3.2.1.1  Conventional oven average test energy consumption. If 
the conventional oven permits baking by either forced convection or 
without forced convection and the oven thermostat does not cycle on 
and off, measure the energy consumed with the forced convection 
mode, (EO)1, and without the forced convection mode, 
(EO)2, when the temperature of the block reaches TO 
(TO is 234 deg.F (112.2 deg.C) above the initial block 
temperature, TI). If the conventional oven permits baking by 
either forced convection or without forced convection and the oven 
thermostat operates by cycling on and off, make the following series 
of measurements with and without the forced convection mode: Measure 
the block temperature, TA, and the energy consumed, EA, at 
the end of the last ``ON'' period of the conventional oven before 
the block reaches TO. Measure the block temperature, TB, 
and the energy consumed, EB, at the beginning of the next 
``ON'' period. Measure the block temperature, TC, and the 
energy consumed, EC, at the end of that ``ON'' period. Measure 
the block temperature, TD, and the energy consumed, ED, at 
the beginning of the following ``ON'' period. Energy measurements 
for EO, EA, EB, EC and ED should be 
expressed in watt-hours for conventional electric ovens or standard 
cubic feet (L) of gas for conventional gas ovens. For a gas oven 
that can be operated with or without forced convection, measure in 
watt-hours any electrical energy consumed by an ignition device or 
other electrical components required for the operation of a 
conventional gas oven while heating the test block to TO using 
the forced convection mode, (EIO)1, and without using the 
forced convection mode, (EIO)2.
    3.2.1.2  Energy consumption of self-cleaning operation. Measure 
the energy consumption, ES, in watt-hours of electricity or in 
standard cubic feet (L) of gas consumed during the self-cleaning 
test set forth in section 3.1.1.1. For a gas oven, also measure in 
watt-hours (kJ) any electrical energy, EIS, consumed by 
ignition devices or other electrical components required during the 
self-cleaning test.
    3.2.1.3  Gas consumption of continuously burning pilot lights. 
Measure the gas consumption of the pilot lights, PO, in 
standard cubic feet (L) of gas and the test duration, LO, in 
hours for the test set forth in Section 3.1.1.2. If a gas flow rate 
meter is used, measure the flow rate, PR, in standard cubic 
feet per hour (L/s).
    3.2.1.4  Clock power. If the conventional oven, conventional 
range, or microwave/conventional range includes an electric clock 
which is on continuously, and the power rating in watts (J/s) of 
this feature is not known, measure the clock power, PCL, in 
watts (J/s.)
    3.2.2  Conventional surface unit test energy consumption. For 
the surface unit under test, measure the energy consumption, 
ECT, in standard cubic feet (L) of gas or watt-hours of 
electricity, and the test block temperature, TCT, at the end of 
the 15 minute (reduced input setting) test interval for the test 
specified in section 3.1.2 and the total time, TT, in hours, 
that the unit is under test. Measure any electrical energy, 
EIC, consumed by an ignition device of a gas heating element in 
watt-hours.
    3.2.2.1  Gas consumption of continuously burning pilot lights. 
If the conventional gas cooking top under test has one or more 
continuously burning pilot lights, measure the gas consumed during 
the test by the pilot lights, PC, in standard cubic feet (L) of 
gas, and the test duration, LC, in hours as specified in 
section 3.1.2.1. If a gas flow rate meter is used, measure the flow 
rate, P, in standard cubic feet per hour (L/s).
    3.2.3   Microwave oven test energy consumption and power input. 
Measurements are to be made as specified in section 4, Paragraphs 
12.4 and 13 of IEC 705. Measure the electrical input energy, 
EM, in watt-hours consumed by the microwave oven during the 
test. Repeat all tests three times.
    3.3  Recorded values.
    3.3.1  Record the test room temperature, TR, at the start 
and end of each test, as determined in section 2.5.
    3.3.2  Record measured test block weights W1, W2, and 
W3 in pounds (kg).
    3.3.3  Record the initial temperature, TI, of the test 
block under test.
    3.3.4  For a conventional oven with a thermostat which operates 
by cycling on and off, record the conventional oven test 
measurements TA, EA, TB, EB, TC, EC, 
TD, and ED. If the thermostat controls the oven 
temperature without cycling on and off, record EO. For a gas 
oven which also uses electrical energy for the ignition or operation 
of the oven, also record EIO.
    3.3.5  For a conventional oven that can be operated with or 
without forced convection and the oven thermostat controls the oven 
temperature without cycling on and off, measure the energy consumed 
with the forced convection mode, (EO)1, and without the 
forced convection mode, (EO)2. If the conventional oven 
operates with or without forced convection and the thermostat 
controls the oven temperature by cycling on and off, record the 
conventional oven test measurements TA, EA, TB, 
EB, TC, EC, TD, and ED. For a gas oven that 
can be operated with or without forced convection, measure any 
electrical energy consumed by an ignition device or other electrical 
components used during the forced convection mode, (EIO)1, 
and without using the forced convection mode, (EIO)2.
    3.3.6  Record the measured energy consumption, ES, and for 
a gas oven, any electrical energy, EIS, for the test of the 
self-cleaning operation of a conventional oven.
    3.3.7  Record the gas flow rate, PR; or the gas 
consumption, PO, and the elapsed time, LO, that any 
continuously burning pilot lights of a conventional oven are under 
test.
    3.3.8  Record the clock power measurement or rating, PCL, 
in watts.
    3.3.9  For the surface unit under test, record the energy 
consumption, ECT, the final test block temperature, TCT, 
the total test time, TT. For a gas cooking top which uses 
electrical energy for ignition of the burners, also record EIC.
    3.3.10  Record the gas flow rate, P; or the gas consumption, 
PC, and the elapsed time, LC, that any continuously 
burning pilot lights of a conventional gas cooking top are under 
test.
    3.3.11  Record the heating value, Hn, as determined in 
section 2.2.2.2 for the natural gas supply.
    3.3.12  Record the heating value, Hp, as determined in 
section 2.2.2.3 for the propane supply.
    3.3.13  Record the electrical input energy and power input 
EM and PM for the microwave oven test; the initial and 
final temperature, T1 and T2, of the test water load; the 
mass of the test container before filling with the test water load 
and the mass of the test water load, MC and MW 
respectively; and the measured room temperature, TO; as 
determined in section 3.2.3.

4. Calculation of Derived Results From Test Measurements

    4.1  Conventional oven.
    4.1.1  Test energy consumption. For a conventional oven with a 
thermostat which operates by cycling on and off, calculate the test 
energy consumption, EO, corresponding to TO with the aid 
of the figure in section 5 of this appendix, expressed in watt-hours 
(kJ) for electric ovens and in Btu's (kJ) for gas ovens, and defined 
                                                                 as:
[[Page 15353]]

[GRAPHIC][TIFF OMITTED]TP23MR95.032


Where:

H=either Hn or Hp, the heating value of the gas used in 
the test as specified in section 2.2.2.2 and section 2.2.2.3, 
expressed in Btu's per standard cubic foot (kJ/L).
TO=234 deg.F (112.2 deg.C) plus the initial test block 
temperature.
and,
[GRAPHIC][TIFF OMITTED]TP23MR95.033


Where:

TA=block temperature in  deg.F ( deg.C) at the end of the last 
``ON'' period of the conventional oven before the test block reaches 
TO.
TB=block temperature in  deg.F ( deg.C) at the beginning of the 
``ON'' period following the measurement of TA.
TC=block temperature in  deg.F ( deg.C) at the end of the 
``ON'' period which starts with TB.
TD=block temperature in  deg.F ( deg.C) at the beginning of the 
``ON'' period which follows the measurement of TC.
EA=volume of gas consumed in standard cubic feet (L) at the end 
of the last ``ON'' period before the test block reaches TO.
EB=volume of gas consumed in standard cubic feet (L) of gas at 
the beginning of the ``ON'' period following the measurement 
TA.
EC=volume of gas consumed in standard cubic feet (L) of gas at 
the end of the ``ON'' period which starts with TB.
ED=volume of gas consumed in standard cubic feet (L) of gas at 
the beginning of the ``ON'' period which follows the measurement of 
TC.

    4.1.1.1  Average test energy consumption. If the conventional 
oven can be operated with or without forced convection, determine 
the average test energy consumption, EO and EIO, in watt-
hours (kJ) for electric ovens and Btu's (kJ) for gas ovens using the 
following equations:
[GRAPHIC][TIFF OMITTED]TP23MR95.034


Where:

(EO)1=test energy consumption using the forced convection 
mode in watt-hours (kJ) for electric ovens and in Btu's (kJ) for gas 
ovens as measured in section 3.2.1.1.
(EO)2=test energy consumption without using the forced 
convection mode in watt-hours (kJ) for electric ovens and in Btu's 
(kJ) for gas ovens as measured in section 3.2.1.1.
(EIO)1=electrical energy consumption in watt-hours (kJ) of 
a gas oven in forced convection mode as measured in section 3.2.1.1.
(EIO)2=electrical energy consumption in watt-hours (kJ) of 
a gas oven without using the forced convection mode as measured in 
section 3.2.1.1.

    4.1.2  Conventional oven annual energy consumption.
    4.1.2.1  Annual cooking energy consumption.
    4.1.2.1.1  Annual primary energy consumption. Calculate the 
annual primary energy consumption for cooking, ECO, expressed 
in kilowatt-hours (kJ) for electric ovens and in Btu's (kJ) for gas 
ovens, and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.035


Where:

EO=test energy consumption as measured in section 3.2.1 or as 
calculated in section 4.1.1 or section 4.1.1.1.
He=3.412 Btu/Wh (3.6 kJ/Wh,) conversion factor of watt-hours to 
Btu's.
OO=35.5 kWh per year, annual useful cooking energy output of 
conventional electric oven.
W1=measured weight of test block in pounds (kg).
Cp=0.23 Btu/lb- deg.F (0.96 kJ/kg deg.C), specific 
heat of test block.
T=234 deg.F (112.2 deg.C), temperature rise of test block.

or,
[GRAPHIC][TIFF OMITTED]TP23MR95.036


Where:

EO=test energy consumption as measured in section 3.2.1. or as 
calculated in section 4.1.1 or section 4.1.1.1.
OO=124,200 Btu (131,038 kJ) per year, annual useful cooking 
energy output of conventional gas oven.
W1, Cp and T are the same as defined above.

    4.1.2.1.2  Annual secondary energy consumption for cooking of 
gas ovens. Calculate the annual secondary energy consumption for 
cooking, ESO, expressed in kilowatt-hours and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.037


Where:

EIO=electrical test energy consumption as measured in section 
3.2.1 or as calculated in section 4.1.1.1.
OO=35.5 kWh per year, annual useful cooking energy output.
He, W1, Cp, and T are as defined in section 
4.1.2.1.1.

    4.1.2.2  Annual energy consumption of any continuously burning 
pilot lights. Calculate the annual energy consumption of any 
continuously burning pilot lights, EPO, expressed in Btu's (kJ) 
and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.038


or,
[GRAPHIC][TIFF OMITTED]TP23MR95.039


Where:

PR=pilot gas flow rate in standard cubic feet per hour (L/s), 
as measured in section 3.2.1.2.
PO=standard cubic feet (L) of gas consumed by any continuously 
burning pilot lights, as measured in section 3.2.1.2.
LO=elapsed test time in hours for any continuously burning 
pilot lights tested, as measured in section 3.2.1.2.
H=Hn or Hp,the heating value of the gas used in the test 
as specified in section 2.2.2.2 and section 2.2.2.3 in Btu's per 
standard cubic foot (kJ/L).
A=8,760, number of hours in a year.
B=300, number of hours any continuously burning pilot lights 
contribute to the heating of an oven for cooking food.

    4.1.2.3  Annual conventional oven self-cleaning energy.
    4.1.2.3.1  Annual primary energy consumption. Calculate the 
annual primary energy consumption for conventional oven self-
cleaning operations, ESC, expressed in kilowatt-hours (kJ) for 
electric ovens and in Btu's (kJ) for gas ovens, and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.040


Where:

ES=energy consumption in watt-hours, as measured in section 
3.2.1.2.
Se=11, average number of times a self-cleaning operation of a 
conventional electric oven is used per year.
C=.001 kW/W conversion factor for watts to kilowatts.

or,
[GRAPHIC][TIFF OMITTED]TP23MR95.041


Where:

ES=gas consumption in standard cubic feet (L), as measured in 
section 3.2.1.2. [[Page 15354]] 
H=Hn or Hp, the heating value of the gas used in the test 
as specified in section 2.2.2.2 and section 2.2.2.3 in Btu's per 
standard cubic foot (kJ/L).
Sg=7, average number of times a self-cleaning operation of a 
conventional gas oven is used per year.

    4.1.2.3.2  Annual secondary energy consumption for self-cleaning 
operation of gas ovens. Calculate the annual secondary energy 
consumption for self-cleaning operations of a gas oven, ESS, 
expressed in kilowatt-hours and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.042


Where:

EIS = electrical energy consumed during the self-cleaning 
operation of a conventional gas oven, as measured in section 
3.2.1.2.
Sg = 7, average number of times a self-cleaning operation of a 
conventional gas oven is used per year.
C = .001 kW/W conversion factor for watts to kilowatts.

    4.1.2.4  Annual clock energy consumption. Calculate the annual 
energy consumption of any constantly operating electric clock, 
ECL, expressed in kilowatt-hours and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.043


Where:
PCL = power rating of clock which is on continuously, in watts, 
as measured in section 3.2.1.3.
HK = 8,760, number of hours in a year.
C = .001 kW/W conversion factor for watts to kilowatts.

    4.1.2.5  Total annual energy consumption of a single 
conventional oven.
    4.1.2.5.1  Conventional electric oven energy consumption. 
Calculate the total annual energy consumption of a conventional 
electric oven, EAO, expressed in kilowatt-hours and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.044


Where:

ECO = annual primary cooking energy consumption as determined 
in section 4.1.2.1.1.
ESC = annual primary self-cleaning energy consumption as 
determined in section 4.1.2.3.1.
ECL = annual clock energy consumption as determined in section 
4.1.2.4.

    4.1.2.5.2  Conventional gas oven energy consumption. Calculate 
the total annual gas energy consumption of a conventional gas oven, 
EAOG, expressed in Btu's (kJ) and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.045


Where:

ECO = annual primary cooking energy consumption as determined 
in section 4.1.2.1.1.
EPO = annual pilot light energy consumption as determined in 
section 4.1.2.2.
ESC = annual primary self-cleaning energy consumption as 
determined in section 4.1.2.3.1.

    If the conventional gas oven uses electrical energy, calculate 
the total annual electrical energy consumption, EAOE, expressed 
in kilowatt-hours and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.046


Where:

ESO = annual secondary cooking energy consumption as determined 
in section 4.1.2.1.2.
ESS = annual secondary self-cleaning energy consumption as 
determined in section 4.1.2.3.2.
ECL = annual clock energy consumption as determined in section 
4.1.2.4.

    4.1.2.6  Total annual energy consumption of multiple 
conventional ovens. If the cooking appliance includes more than one 
conventional oven calculate the total annual energy consumption of 
the conventional ovens using the following equations:
    4.1.2.6.1  Conventional electric oven energy consumption. 
Calculate the total annual energy consumption, ETO, in 
kilowatt-hours and define as:
[GRAPHIC][TIFF OMITTED]TP23MR95.047


Where:
[GRAPHIC][TIFF OMITTED]TP23MR95.048


average annual primary energy consumption for cooking,

Where:
n = number of conventional ovens in the basic model.
ECO = annual primary energy consumption for cooking as 
determined in section 4.1.2.1.1.
[GRAPHIC][TIFF OMITTED]TP23MR95.049


average annual self-cleaning energy consumption,

Where:
n = number of self-cleaning conventional ovens in the basic model.
ESC = annual primary self-cleaning energy consumption as 
determined according to section 4.1.2.3.1.
ECL = clock energy consumption as determined according to 
section 4.1.2.4.

    4.1.2.6.2  Conventional gas oven energy consumption. Calculate 
the total annual gas energy consumption, ETOG, in Btu's (kJ) 
and define as:
[GRAPHIC][TIFF OMITTED]TP23MR95.050


Where:

EACO = average annual primary energy consumption for cooking in 
Btu's (kJ) as defined in section 4.1.2.6.1.
EASC = average annual self-cleaning energy consumption in Btu's 
(kJ) as defined in section 4.1.2.6.1.
[GRAPHIC][TIFF OMITTED]TP23MR95.051


total annual energy consumption of any pilot lights,

Where:

EPO = annual energy consumption of any continuously burning 
pilot lights determined according to section 4.1.2.2.
n = number of pilot lights in the basic model.

    If the oven also uses electrical energy, calculate the total 
annual electrical energy consumption, ETOE, in kilowatt-hours 
and define as:
[GRAPHIC][TIFF OMITTED]TP23MR95.052


Where:
[GRAPHIC][TIFF OMITTED]TP23MR95.053


average annual secondary energy consumption for cooking,

Where:

n = number of conventional ovens in the basic model.
ESO = annual secondary energy consumption for cooking of gas 
ovens as determined in section 4.1.2.1.2.
[GRAPHIC][TIFF OMITTED]TP23MR95.054


average annual secondary self-cleaning energy consumption,
Where:
n = number of self-cleaning ovens in the basic model.
ESS = annual secondary self-cleaning energy consumption of gas 
ovens as determined in section 4.1.2.3.2.
ECL = annual clock energy consumption as determined in section 
4.1.2.4.

    4.1.3  Conventional oven cooking efficiency.
    4.1.3.1  Single conventional oven. Calculate the conventional 
oven cooking efficiency, EffAO, using the following equations:

    For electric ovens:
[GRAPHIC][TIFF OMITTED]TP23MR95.055


and,

    For gas ovens:
[GRAPHIC][TIFF OMITTED]TP23MR95.056


Where:

W1 = measured weight of test block in pounds (kg).
Cp = 0.23 Btu/lb- deg.F (0.96 kJ/kg deg.C), specific 
heat of test block.
T = 234 deg.F (112.2 deg.C), temperature rise of test block. 
[[Page 15355]] 
EO = test energy consumption as measured in section 3.2.1 or 
calculated in section 4.1.1 or section 4.1.1.1.
He = 3.412 Btu/Wh (3.6 kJ/Wh), conversion factor for watt-hours 
to Btu's.
EIO = electrical test energy consumption according to section 
3.2.1 or as calculated in section 4.1.1.1.

    4.1.3.2  Multiple conventional ovens. If the cooking appliance 
includes more than one conventional oven, calculate the cooking 
efficiency for all of the conventional ovens in the appliance, 
EffTO, using the following equation:
[GRAPHIC][TIFF OMITTED]TP23MR95.057


Where:

n = number of conventional ovens in the cooking appliance.
EffAO = cooking efficiency of each oven determined according to 
section 4.1.3.1.

    4.1.4  Conventional oven energy factor. Calculate the energy 
factor, or the ratio of useful cooking energy output to the total 
energy input, RO, using the following equations:
    For electric ovens,
[GRAPHIC][TIFF OMITTED]TP23MR95.058


Where:

OO = 35.5 kWh per year, annual useful cooking energy output.
EAO = total annual energy consumption for electric ovens as 
determined in section 4.1.2.5.1.

    For gas ovens:
[GRAPHIC][TIFF OMITTED]TP23MR95.059


Where:

OO = 124,200 Btu (131,038 kJ) per year, annual useful cooking 
energy output.
EAOG = total annual gas energy consumption for conventional gas 
ovens as determined in section 4.1.2.5.2.
EAOE = total annual electrical energy consumption for 
conventional gas ovens as determined in section 4.1.2.5.2.
He = 3,412 Btu/kWh (3.6 kJ/Wh), conversion factor for kilowatt-
hours to Btu's.

    4.2  Conventional cooking top.
    4.2.1  Conventional cooking top cooking efficiency.
    4.2.1.1  Electric surface unit cooking efficiency. Calculate the 
cooking efficiency, EffSU, of the electric surface unit under 
test, defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.060


Where:

W = measured weight of test block, W2 or W3, expressed in 
pounds (kg).
Cp = 0.23 Btu/lb- deg.F (0.96 kJ/kg- deg.C), specific heat of 
test block.
TSU = temperature rise of the test block: Final test block 
temperature, TCT, as determined in section 3.2.2, minus the 
initial test block temperature, TI, expressed in  deg.F 
( deg.C).
He = 3.412 Btu/Wh (3.6 kJ/Wh,) conversion factor of watt-hours 
to Btu's.
ECT = measured energy consumption, as determined according to 
section 3.2.2, expressed in watt-hours.

    4.2.1.2  Gas surface unit cooking efficiency. Calculate the 
cooking efficiency, EffSU, of the gas surface unit under test, 
defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.061


Where:

W3 = measured weight of test block as measured in section 
3.3.2, expressed in pounds (kg).
Cp and TSU are the same as defined in section 4.2.1.1.

and,
[GRAPHIC][TIFF OMITTED]TP23MR95.062


Where:

ECT = total gas consumption for the gas surface unit test as 
measured in section 3.2.2.
EIC = electrical energy consumed by an ignition device of a gas 
surface unit as measured in section 3.2.2.
He = 3.412 Btu/Wh, conversion factor of watt-hours to Btu's.
H = either Hn or Hp, the heating value of the gas used in 
the test as specified in section 2.2.2.2 and section 2.2.2.3, 
expressed in Btu's per standard cubic foot (kJ/L) of gas.
ECP = P x TT, (pilot consumption, in standard cubic feet 
(L), during unit test), where:
[GRAPHIC][TIFF OMITTED]TP23MR95.063


Where:

PC = any pilot lights gas consumption defined in section 
3.2.2.1.
LC = elapsed time of the cooking top pilot lights test as 
defined in section 3.1.2.1.
TT = the elapsed test time as defined in section 3.2.2.

    4.2.1.3  Conventional cooking top cooking efficiency. Calculate 
the conventional cooking top cooking efficiency, EffCT, using 
the following equation:
[GRAPHIC][TIFF OMITTED]TP23MR95.064


Where:

n = number of surface units in the cooking top.
EffSU = the efficiency of each of the surface units, as 
determined according to section 4.2.1.1 or section 4.2.1.2.

    4.2.2  Conventional cooking top annual energy consumption.
    4.2.2.1  Conventional electric cooking top energy consumption. 
Calculate the annual energy consumption of an electric cooking top, 
ECA, in kilowatt-hours per year, defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.065


Where:

OCT = 209.4 kWh per year, annual useful cooking energy output.
EffCT = conventional cooking top cooking efficiency as defined 
in section 4.2.1.3.
    4.2.2.2  Conventional gas cooking top.
    4.2.2.2.1  Annual cooking energy consumption. Calculate the 
annual energy consumption for cooking, ECC, in Btu's (kJ) per 
year for a gas cooking top, defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.066


Where:

OCT = 732,500 Btu (772,828 kJ) per year, annual useful cooking 
energy output.
EffCT = the gas cooking top efficiency as defined in section 
4.2.1.3.

    4.2.2.2.2  Annual energy consumption of any continuously burning 
gas pilots. Calculate the annual energy consumption of any 
continuously burning gas pilot lights of the cooking top, EPC, 
in Btu's (kJ) per year, defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.067


Where:

P = pilot light gas flow rate as defined in section 4.2.1.2, or as 
measured in section 3.2.2.1.
A = 8,760 hours, the total number of hours in a year.
H = either Hn or Hp, the heating value of the gas used in 
the test as specified in section 2.2.2.2. and section 2.2.2.3, 
expressed in Btu's per standard cubic foot (kJ/L) of gas.

    4.2.2.2.3  Total annual energy consumption of a conventional gas 
cooking top. Calculate the total annual energy consumption of a 
conventional gas cooking top, ECA, in Btu's (kJ) per year, 
defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.068


Where:

ECC = energy consumption for cooking as determined in section 
4.2.2.2.1.
EPC = annual energy consumption of the pilot lights as 
determined in section 4.2.2.2.2.

    4.2.3  Conventional cooking top energy factor. Calculate the 
energy factor or ratio of useful cooking energy output for cooking 
to the total energy input, RCT, as follows:
    For an electric cooking top, the energy factor is the same as 
the cooking efficiency as determined according to section 4.2.1.3.
    For gas cooking tops,
[GRAPHIC][TIFF OMITTED]TP23MR95.069


Where:

[[Page 15356]] OCT = 732,500 Btu (772,828 kJ) per year, annual 
useful cooking energy output of cooking top.
ECA = total annual energy consumption of cooking top determined 
according to section 4.2.2.2.3.

    4.3  Combined Components.
    The annual energy consumption and cooking efficiency of a 
kitchen range, e.g. a cooktop and oven combined, shall be the sum of 
the annual energy consumption and cooking efficiency of each of its 
components. The annual energy consumption and cooking efficiency for 
other combinations of ovens, cooktops and microwaves will also be 
treated as the sum of the annual energy consumption and cooking 
efficiency of each of its components. The energy factor of a 
combined component is the sum of the ratio of the annual useful 
cooking energy output to the total annual energy consumption of each 
component.
    4.4  Microwave oven.
    4.4.1  Microwave oven test energy. Calculate the microwave oven 
test energy output, ET, in watt-hour's (kJ). The calculation is 
repeated three times as required in section 3.2.3. The average of 
the three ET's is used for calculations in 4.4.3 and 4.4.5. For 
calculations specified in units of energy (watt-hours), use the 
equation below:
[GRAPHIC][TIFF OMITTED]TP23MR95.070


Where:

MW = the measured mass of the test water load, in grams.
MC = the measured mass of the test container before filling 
with test water load, in grams.
T1 = the initial test water load temperature, in  deg.C 
( deg.F).
T2 = the final test water load temperature, in  deg.C ( deg.F).
TO = the measured ambient room temperature, in  deg.F ( deg.C).
C = 0.88 kJ/kg- deg.C, (0.210 Btu/lb- deg.F) specific heat of test 
container.
Cp = 4.187 kJ/kg- deg.C, (1.0 Btu/lb- deg.F) specific heat of 
water.
He = 3.6 kJ/Wh (3.412 Btu/Wh,) conversion factor for Btu's to 
Watt-hours.

    4.4.2  Microwave oven test power output. Calculate the microwave 
oven test power output, PT, in watts as specified in Section 
four, paragraph 12.5 of IEC 705. The calculation is repeated for 
each of the three tests as required in section 3.2.3. The average of 
the three PT's is used for calculations in section 4.4.4.
    4.4.3  Microwave oven annual energy consumption. Calculate the 
microwave oven annual energy consumption, EMO, in kWh's per 
year, defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.071


Where:

EM = the energy consumption as defined in section 3.2.3.
OM = 77.3 kWh's per year, the microwave oven annual useful 
cooking energy output.
ET = the test energy as calculated in section 4.4.1.

    4.4.4  Microwave oven cooking efficiency. Calculate the 
microwave oven cooking efficiency, EffMO, as specified in 
section four, paragraph 14 of IEC 705.
    4.4.5  Microwave oven energy factor. Calculate the energy factor 
or the ratio of the useful cooking energy output to total energy 
input on a yearly basis, RMO, defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.072


BILLING CODE 6450-01-P
[[Page 15357]]

[GRAPHIC][TIFF OMITTED]TP23MR95.002



BILLING CODE 6450-01-C [[Page 15358]] 
Where:

OM = 77.3 kWh, annual useful cooking energy output.
EMO = annual total energy consumption as determined in section 
4.4.3.
    6. Appendix J to subpart B of part 430 is revised to read as 
follows:

Appendix J to Subpart B of Part 430--Uniform Test Method for Measuring 
the Energy Consumption of Automatic and Semi-Automatic Clothes Washers

1. Definitions

    1.1  Agitator means the device that provides the shaking or 
stirring motion to the clothes for washing. The device shall include 
all fixtures and other essential assemblies needed for clothes 
washing in the normal cycle.
    1.2  Bone-dry means a condition or a load of test cloth which 
has been dried in a dryer at maximum temperature for a minimum of 10 
minutes, removed and weighed before cool down, and then dried again 
for 10-minute periods until the final weight change of the load is 1 
percent or less.
    1.3  Clothes container means the compartment within the clothes 
washer that holds the clothes during operation of the machine.
    1.4  Compact refers to a clothes washer which has a clothes 
container capacity of less than 1.6 ft\3\ (45 L).
    1.5  Deep rinse cycle refers to a rinse cycle in which the 
clothes container is filled with water to a selected level and the 
clothes load is rinsed by agitating it or tumbling it through the 
water.
    1.6  Front-loader means a clothes washer which sequentially 
rotates or tumbles portions of the clothes load above the water 
level allowing the clothes load to fall freely back into the water. 
The principal axis of the clothes container is in a horizontal plane 
and the access to the clothes container is through the front of the 
machine.
    1.7  Machine-controlled water fill capability means a clothes 
washer which has the capability of automatically controlling the 
level of the water in the tub dependent upon the size of the test 
load, without operator intervention.
    1.8  Make-up water means the amount of fresh water needed to 
supplement the amount of stored water pumped from the external 
laundry tub back into the clothes washer when the suds-return 
feature is activated in order to achieve the required water fill 
level in the clothes washer.
    1.9  Modified energy factor means the quotient of the cubic foot 
(liter) capacity of the clothes container divided by the total 
clothes washer energy consumption per cycle, expressed as the sum of 
the machine electrical energy consumption, the hot water energy 
consumption, and the energy required for removal of remaining 
moisture of the test load for nonwater-heating clothes washers and 
expressed as the sum of the machine electrical energy consumption 
and the energy required for removal of moisture of the test load for 
water-heating clothes washers.
    1.10  Moisture removal energy means the nominal energy required 
for a clothes dryer to remove moisture from clothes multiplied by 
the difference between weighted test load after the normal cycles 
and the weighted reference (bone-dry) weight of the test load.
    1.11  Nonwater-heating clothes washer refers to a clothes washer 
that has both hot and cold water supply pipe connections. This type 
of clothes washer does not have an internal hot water heater device 
to generate the energy needed to heat inlet water.
    1.12  Normal cycle means the cycle recommended by the 
manufacturer for washing cotton and/or linen clothes.
    1.13  Sensor filled refers to a type of water fill control which 
automatically terminates the fill when the water reaches an 
appropriate level in the tub.
    1.14  Spray rinse cycle refers to a rinse cycle in which water 
is sprayed onto the clothes load for a definite period of time 
without maintaining any specific water level in the clothes 
container.
    1.  Standard refers to a clothes washer which has a clothes 
container capacity of 1.6 ft3 (45 L) or greater.
    1.16  Suds-return means a feature or option on a clothes washer 
which causes the stored wash water obtained by utilizing the suds-
saver feature to be pumped from the external laundry tub back into 
the clothes washer.
    1.17  Suds-saver means a feature or option on a clothes washer 
which allows the user to store used wash water in an external 
laundry tub for use with subsequent wash loads.
    1.18  Temperature use factor means the percentage of the total 
number of washes a user would wash with a particular wash/rinse 
temperature setting.
    1.19  Thermostatically controlled valves refer to clothes washer 
valves which sense water temperature and adjust valve orifices 
appropriately to maintain a desired mixed water temperature.
    1.20  Time filled refers to a type of water fill control which 
uses a combination of water flow controls in conjunction with time 
to terminate the water fill cycle.
    1.21  Top-loader-horizontal-axis clothes washer means a clothes 
washer which sequentially rotates or tumbles portions of the clothes 
load above the water level allowing the clothes load to fall freely 
back into the water. The principal axis of the clothes container is 
in a horizontal plane and the access to the clothes container is 
through the top of the clothes washer.
    1.22  Top-loader-vertical-axis clothes washer means a clothes 
washer that flexes and oscillates the submerged clothes load through 
the water by means of mechanical agitation or other movement. The 
principal axis of the clothes container is in a vertical plane and 
the access to the clothes container is through the top of the 
clothes washer.
    1.23  Water consumption factor means the quotient of the cubic 
foot (liter) capacity of the clothes washer divided by the total 
weighted per-cycle water consumption.
    1.24  Water-heating clothes washer refers to a clothes washer 
which does not have a supply pipe connection for hot water. This 
type of clothes washer does have an internal electrical water 
heating device to generate the energy needed to heat inlet water.

2. Testing Conditions

    2.1  Installation. Install the clothes washer in accordance with 
manufacturer's instructions.
    2.2  Electrical energy supply. Maintain the electrical supply at 
the clothes washer terminal block within 2 percent of 120/240 or 
120/208Y as applicable to the particular terminal block wiring 
system as specified by the manufacturer. If the clothes washer has a 
dual voltage conversion capability, conduct the test at the highest 
voltage specified by the manufacturer.
    2.3  Water temperature. For nonwater-heating clothes washers not 
equipped with thermostatically controlled inlet water valves, the 
temperature of the hot and cold water supply shall be maintained at 
100 deg.F 10 deg.F (37.8 deg.C5.5 deg.C). 
For nonwater-heating clothes washers equipped with thermostatic 
controlled inlet valves, the temperature of the hot water supply 
shall be maintained at 140 deg.F5 deg.F 
(60.0 deg.C2.8 deg.C) and the cold water supply shall be 
maintained at 60 deg.F5 deg.F 
(15.6 deg.C2.8 deg.C). For water-heating clothes washers 
that have infinite or various temperature selection feature, the 
temperature of the water supply shall be maintained at a minimum of 
55 deg.F (12.8 deg.C) and a maximum of 60 deg.F (15.6 deg.C). Water 
meters shall be installed in both the hot and cold water lines to 
measure water consumption.
    2.4  Water pressure. The static water pressure at the hot and 
cold water inlet connections of the machine shall be maintained 
during the test at 35 pounds per square inch gauge 
(psig)2.5 psig (241.3 kPa17.2 Kpa). The 
static water pressure for a single water inlet connection shall be 
maintained during the test at 35 psig2.5 psig (241.3 
Kpa17.2 kPa). Water pressure gauges shall be installed 
in both the hot and cold water lines to measure water pressure.
    2.5  Instrumentation. Perform all test measurements using the 
following instruments, as appropriate:
    2.5.  Weighing scales.
    2.5.1.1  Weighing scale for test cloth. The scale shall have a 
range of 0 lbs (0 kg) to a maximum of 30 lbs (13.6 kg) with a 
resolution of at least 0.2 oz (5.7 g) and a maximum error no greater 
than 0.3 percent of any measured value within the range of 3 lbs 
(1.4 kg) to 15 lbs (6.8 kg).
    2.5.1.2  Weighing scale for clothes container capacity 
measurements. The scale should have a range of 0 lbs (0 kg) to a 
maximum of 500 lbs (226.8 kg) with a resolution of 0.50 lbs (0.23 
kg) and a maximum error no greater than 0.5 percent of the measured 
value.
    2.5.2  Watt-hour meter. The watt-hour meter shall have a 
resolution of at least 1 Wh (3.6 kJ) and a maximum error no greater 
than 2 percent of the measured value for any demand greater than 50 
Wh (180.0 kJ).
    2.5.3  Temperature sensing device. The temperature sensing 
device shall have an error no greater than 1 deg.F 
(0.6 deg.C) over the range of 32 deg.F (0 deg.C) to 
200 deg.F (93.3 deg.C).
    2.5.4  Water meter. The water meter shall have a resolution no 
larger than 0.1 gallons (0.4 liters) and a maximum error no greater 
than 2 percent for all water flow rates from 1 gal/min (3.8 L/min) 
to 5 gal/min (18.9 L/min).
[[Page 15359]]

    2.5.5  Water pressure gauge. The water pressure gauge shall have 
a resolution of 1 psig (6.9 kPa) and shall have an error no greater 
than 5 percent of any measured value over the range of 32.5 psig 
(224.1 kPa) to 37.5 psig (258.6 kPa).
    2.6  Test cloths.
    2.6.1  Energy test cloth. The energy test cloth shall be clean 
and consist of the following:
    2.6.1.2  Pure finished bleached cloth. Pure finished bleached 
cloth, made with a momie or granite weave, which is 50 percent 
cotton and 50 percent polyester and weighs 5.75 oz/yd2 (195.0 
g/m2) and has 65 ends on the warp and 57 picks on the fill.
    2.6.1.3  Cloth material. Cloth material that is 24 in by 36 in 
(61.0 cm by 91.4 cm) and has been hemmed to 22 in by 34 in (55.9 cm 
by 86.4 cm) before washing. The maximum shrinkage after five washes 
shall not be more than four percent on the length and width.
    2.6.1.4  Number of tests. The number of test runs on the same 
energy test cloth shall not exceed 25 runs.
    2.6.2  Energy stuffier cloths. The energy stuffier cloths shall 
be made from energy test cloth material and shall consist of pieces 
of material that are 12 in by 12 in (30.5 cm by 30.5 cm) and have 
been hemmed to 10 in by 10 in (25.4 cm by 25.4 cm) before washing. 
The maximum shrinkage after five washes shall not be more than four 
percent on the length and width. The number of test runs on the same 
energy stuffier cloth shall not exceed 25 runs.
    2.7  Composition of test loads.
    2.7.1  Seven pound test load. The seven pound test load shall 
consist of bone-dry energy test cloths which weigh 70.07 
lbs (3.180.03 kg). Adjustments to the test load to 
achieve the proper weight can be made by the use of energy stuffier 
cloths.
    2.7.2  Three pound test load. The three pound test load shall 
consist of bone-dry energy test cloths which weigh 30.03 
lbs (1.360.014 kg). Adjustments to the test load to 
achieve the proper weight can be made by the use of energy stuffier 
cloths.
    2.8  Use of test loads.
    2.8.1  Top-loader-vertical-axis clothes washers for calculating 
energy factor. The top-loader clothes washer shall be tested without 
a test load, except for clothes washers equipped with machine 
controlled water fill capability. Machine controlled water fill 
capable clothes washers shall use a test load per section 2.8.2.
    2.8.2  Front-loader, top-loader-horizontal-axis, top-loader-
vertical-axis with machine-controlled water fill capable and top-
loader-vertical-axis for calculating modified energy factor, clothes 
washers.
    2.8.2.1  Standard size clothes washer. When the maximum water 
fill level is being tested, the test load shall be seven pounds as 
described in section 2.7.1. When the minimum water fill level is 
being tested, the test load shall be three pounds as described in 
section 2.7.2.
    2.8.2.2  Compact size clothes washer. When either the maximum or 
minimum water fill levels are being tested, the test load shall be 
as described in section 2.7.2.
    2.8.3  Method of loading. Load the energy test clothes by 
grasping them in the center, shaking them to hang loosely and then 
dropping them into the clothes container prior to activating the 
clothes washer.
    2.9  Preconditioning. If the clothes washer has not previously 
been tested nor filled with water in the preceding 96 hours, 
precondition it by running it through a cold rinse cycle and then 
draining it to insure that the hose, pump, and sump are filled with 
water.
    2.10  Wash time setting. The actual wash time (period of 
agitation) shall be not less than 9.75 minutes.
    2.11  Agitator and spin speed settings. Where controls are 
provided for agitation and spin speed selections, set them at the 
normal cycle settings. If settings at the normal cycle are not 
offered, set the control settings to the maximum levels permitted on 
the clothes washer.

3. Test Measurements

    3.1  Clothes container capacity. Measure the entire volume which 
a dry clothes load could occupy within the clothes container, 
according to sections 3.1.1 and 3.1.2.
    3.1.1  Top-loader-vertical-axis clothes washer. Line the clothes 
container and agitator with 2 mil (0.051 mm) plastic sheet or use 
some other method to prevent the water from entering the outer tub 
container and into the agitator. The agitator shall be in place. 
Fill the clothes container with water to its uppermost edge. (This 
filling procedure may require overriding of the fill level control, 
or manually completing the fill to the top of the container after 
the fill sensor terminates the fill at maximum level.) Record the 
weight of the machine before filling it with water and then after 
filling it with water. The clothes container capacity is calculated 
as follows:
[GRAPHIC][TIFF OMITTED]TP23MR95.073


Where:

C = capacity in cubic feet (liters).
W = mass of water in pounds (kilograms).
 = density of water at the measured temperature in pounds 
per cubic foot (kilograms per liter).

    3.1.2  Front-loader and top-loader-horizontal-axis clothes 
washer. For front-loader-horizontal-axis clothes washers, position 
the tub and shaft axis vertically with the tub facing up. For top-
loader-horizontal-axis clothes washers, position the washer in its 
upright position and the centerline of the inner door at the top 
position. Line the clothes container with 2 mil (0.051 mm) plastic 
sheet or use some other method to prevent the water from entering 
the outer tub container. Fill the clothes container with water to 
its uppermost edge. (This filling procedure may require overriding 
of the fill level control, or manually completing the fill to the 
top of the container after the fill sensor terminates the fill at 
maximum level.) Record the weight of the machine before filling it 
with water and then after filling it with water. The clothes 
container capacity is calculated as follows:
[GRAPHIC][TIFF OMITTED]TP23MR95.074


Where:

C = capacity in cubic feet (liters).
W = mass of water in pounds (kilograms).
 = density of water at the measured temperature in pounds 
per cubic foot (kilograms per liter).

    3.2  Test cycle. Establish the test conditions set forth in 
section 2 of this appendix. Automatic and semi-automatic clothes 
washers that have infinite or various temperature selection features 
that do not conform to the wash/rinse temperature combination 
settings of sections 5 or 6 shall be tested at the following 
temperature settings: Hottest setting available on the machine, hot 
(a minimum of 140 deg.F (60.0 deg.C) and a maximum of 145 deg.F 
(62.8 deg.C)), warm (a minimum of 100 deg.F (37.8 deg.C) and a 
maximum of 105 deg.F (40.6 deg.C)), and coldest setting available on 
the machine.
    3.2.1  Nonwater-heating clothes washers.
    3.2.1.1  Per-cycle electrical energy consumption. Set the water 
level selector at maximum fill available on the clothes washer and 
insert the appropriate test load, if applicable. Activate the normal 
cycle of the clothes washer and also any suds-saver switch.
    3.2.1.1.1  Measure the electrical energy consumption of the 
clothes washer for the complete normal cycle.
    3.2.1.2  Hot and cold water consumption with the water level 
selector at maximum fill available on the clothes washer, if 
manually controlled.
    3.2.1.2.1  Set the water level selector at maximum fill 
available on the clothes washer and insert the appropriate test 
load. Activate the normal cycle of the clothes washer and also any 
suds-saver switch.
    3.2.1.2.2  For automatic clothes washers, set the wash/rinse 
temperature selector to the hottest TUF combination setting. For 
semi-automatic clothes washers, open the hot water faucet valve 
completely and close the cold water faucet valve completely to 
achieve the hottest TUF combination setting.
    3.2.1.2.3  Measure the respective number of gallons (liters) of 
hot and cold water used to fill the tub for the wash cycle.
    3.2.1.2.4  Measure the respective number of gallons (liters) of 
hot and cold water used for all deep rinse cycles.
    3.2.1.2.5  Measure the respective gallons (liters) of hot and 
cold water used for all spray rinse cycles.
    3.2.1.2.6  For automatic clothes washers repeat sections 
3.2.1.2.3, 3.2.1.2.4, and 3.2.1.2.5 for each of the other wash/rinse 
temperature selections available that use hot water. For semi-
automatic clothes washers repeat sections 3.2.1.2.3, 3.2.1.2.4, and 
3.2.1.2.5 for the TUFs in section 6 with the following water faucet 
valve adjustments:

------------------------------------------------------------------------
                                                Faucet position         
                                     -----------------------------------
                                          Hot valve        Cold valve   
------------------------------------------------------------------------
Hot.................................  Completely open.  Closed.         
[[Page 15360]]                                                          
                                                                        
Warm................................  Completely open.  Completely open.
Cold................................  Closed..........  Completely open.
------------------------------------------------------------------------

    3.2.1.2.7  Set the suds-saver switch to activate the suds-
return. Repeat sections 3.2.1.2.3 to 3.2.1.2.5 for a Warm/Cold 
temperature setting.
    3.2.1.3  Hot and cold water consumption with the water level 
selector at minimum fill. Set the water level selector at minimum 
fill and insert the appropriate test load. Activate the normal cycle 
of the clothes washer and also any suds-saver switch. Repeat 
sections 3.2.1.2.2 through 3.2.1.2.7.
    3.2.1.4  Hot and cold water consumption for clothes washers that 
incorporate a partial fill during the rinse cycle. When sections 
3.2.1.2 and 3.2.1.3 cannot be used for clothes washers that 
incorporate a partial fill during the rinse cycle, activate any 
suds-saver switch and operate the clothes washer for the complete 
normal cycle at both the maximum water fill level and the minimum 
water fill level for each of the wash/rinse temperature selections 
available. Measure the respective hot and cold water consumed during 
the complete normal cycle.
    3.2.2  Water-heating clothes washers. For water-heating clothes 
washers the following temperature settings will be tested: hottest 
setting available on the machine, hot (a minimum of 140 deg.F 
(60.0 deg.C) and a maximum of 145 deg.F (62.8 deg.C)), warm (a 
minimum of 100 deg.F (37.8 deg.C) and a maximum of 105 deg.F 
(40.6 deg.C)), and coldest setting available on the machine. These 
temperature must be confirmed by measurement using a temperature 
sensing device.
    3.2.2.1  Per-cycle electrical energy consumption at maximum 
fill. Set the water level selector at maximum fill available on the 
clothes washer, if manually controlled.
    3.2.2.1.1  Hottest wash at maximum fill. Activate the machine 
and insert the appropriate test load, if applicable. Select the 
normal or its equivalent wash cycle. Where spin speed selection is 
available, set the control to its maximum setting. Set the water 
temperature selector to the hottest setting and activate the wash 
cycle. Measure and record the kilowatt-hours of electrical energy 
consumed for the complete cycle as Eht,max.
    3.2.2.1.2  Hot wash at maximum fill. Insert a water temperature 
sensing device inside the inner drum prior to testing. Activate the 
machine and insert the appropriate test load, if applicable. Select 
the normal or its equivalent wash cycle. Where spin speed selection 
is available, set the control to its maximum setting. Set the water 
temperature selector to the hot setting (a minimum of 140 deg.F 
(60.0 deg.C) and a maximum of 145 deg.F (62.8 deg.C)) and activate 
the wash cycle. Verify the wash water temperature, which must be at 
a minimum of 140 deg.F (60.0 deg.C) and a maximum of 145 deg.F 
(62.8 deg.C). If the measured water temperature is not within the 
specified range, stop testing, adjust the temperature selector 
accordingly and repeat the procedure. Otherwise, proceed and 
complete testing. Measure and record the kilowatt-hours of 
electrical energy consumed for the complete cycle as Eh,max.
    3.2.2.1.3 Warm wash at maximum fill. Repeat section 3.2.2.1.2 
for a warm wash setting at a minimum of 100 deg.F (37.8 deg.C) and a 
maximum of 105 deg.F (40.6 deg.C). Measure and record the kilowatt-
hours of electrical energy consumed for the complete cycle as 
Ew,max.
    3.2.2.1.4  Cold wash at maximum fill. Repeat section 3.2.2.1.1 
for the coldest water setting. Measure and record the kilowatt-hours 
of electrical energy consumed for the complete cycle as Ec,max. 
Ensure that the inlet water temperature is maintained per section 
2.3.
    3.2.2.2  Per-cycle water consumption at maximum fill. Measure 
the total number of gallons (liters) of water used in sections 
3.2.2.1.1, 3.2.2.1.2, 3.2.2.1.3, and 3.2.2.1.4, including all wash, 
deep rinse, and spray rinse cycles as Vhtmax, Vh,max, 
Vw,max, and Vc,max.
    3.2.2.3  Per-cycle electrical energy consumption at minimum 
fill. Set the water level selector to the minimum fill position, if 
manually controlled.
    3.2.2.3.1  Hottest wash at minimum fill. Repeat section 
3.2.2.1.1. Measure and record the kilowatt-hours of electrical 
energy consumed for the complete cycle as Eht,min.
    3.2.2.3.2  Hot wash at minimum fill. Repeat section 3.2.2.1.2. 
The hot wash setting shall be at a minimum of 140 deg.F (60.0 deg.C) 
and a maximum of 145 deg.F (62.8 deg.C). Measure and record the 
kilowatt-hours of electrical energy consumed for the complete cycle 
as Eh,min.
    3.2.2.3.3  Warm wash at minimum fill. Repeat section 3.2.2.1.2 
for warm wash setting at a minimum of 100 deg.F (37.8 deg.C) and a 
maximum of 105 deg.F (40.6 deg.C). Measure and record the kilowatt-
hours of electrical energy consumed for the complete cycle as 
Ew,min.
    3.2.2.3.4  Cold wash at minimum fill. Repeat section 3.2.2.1.1 
for the coldest wash setting. Measure and record the kilowatt-hours 
of electrical energy consumed for the complete cycle as Ec,min. 
Ensure that the inlet water temperature is maintained per section 
2.3.
    3.2.2.4  Per-cycle water consumption at minimum fill. Measure 
the total number of gallons (liters) of water used in sections 
3.2.2.3.1, 3.2.2.3.2, 3.2.2.3.3, and 3.2.2.3.4, including all wash, 
deep rinse, and spray rinse cycles.
    3.3  Moisture content of test load. Weigh the test loads after 
completion of test cycles in warm wash/cold rinse or cold wash/cold 
rinse temperature setting for both maximum and minimum water fills.
    3.4  Data recording. Record for each test cycle in sections 
3.2.1 through 3.3.
    3.4.1  Nonwater-heating clothes washers.
    3.4.1.1  Record the kilowatt-hours of electrical energy, 
ME, consumed during the test to operate the clothes washer in 
section 3.2.1.1.
    3.4.1.2  Record the individual gallons (liters) of hot and cold 
water consumption, Vhi and Vci, measured at maximum fill 
level for each wash/rinse TUF combination setting in section 
3.2.1.2, excluding any fresh make-up water required to complete the 
fill during a suds-return cycle.
    3.4.1.3  Record the individual gallons (liters) of hot and cold 
water consumption, Vhj and Vcj, measured at minimum fill 
level for each wash/rinse TUF combination setting in section 
3.2.1.3, excluding any fresh make-up water required to complete the 
fill during a suds-return cycle.
    3.4.1.4  Record the individual gallons (liters) of hot and cold 
water, ShH and ScH, measured at maximum fill for the suds-
return cycle.
    3.4.1.5  Record the individual gallons (liters) of hot and cold 
water, ShL and ScL, measured at minimum fill for the suds-
return cycle.
    3.4.2  Water-heating clothes washers.
    3.4.2.1  Record the kilowatt-hours of electrical energy 
Ehtmax, Eh,max, Ew,max, and Ec,max consumed at 
maximum fill level for each wash/rinse TUF combination setting in 
sections 3.2.2.1.1, 3.2.2.1.2, 3.2.2.1.3, and 3.2.2.1.4, 
respectively.
    3.4.2.2  Record the total gallons (liters) of water consumption, 
Vhtmax, Vh,max, Vw,max, and Vc,max, measured at 
maximum fill level for each wash/rinse TUF combination setting in 
section 3.2.2.2.
    3.4.2.3  Record the kilowatt-hours of electrical energy, 
Ehtmin, Eh,min, Ew,min, and Ec,min consumed at 
minimum fill level for each wash/rinse TUF combination setting in 
section 3.2.2.3.1, 3.2.2.3.2, 3.2.2.3.3, and 3.2.2.3.4, 
respectively.
    3.4.2.4  Record the total gallons (liters) of water consumption, 
Vhtmin, Vh,min, Vw,min, and Vc,min, measured at 
minimum fill level for each wash/rinse TUF combination setting in 
section 3.2.2.4.
    3.4.3  Record the weight of the test loads, Wmax and 
Wmin, after completion of test cycles in section 3.3.

4. Calculation of Derived Results From Test Measurements

    4.1  Energy consumption.
    4.1.1  Nonwater-heating clothes washers.
    4.1.1.1  Per-cycle temperature-weighted hot water consumption 
for maximum and minimum water fill levels. Calculate for the cycle 
under test the per-cycle temperature weighted hot water consumption 
for the maximum water fill level, Vhmax, and for the minimum 
water fill level, Vhmin, expressed in gallons per cycle (liters 
per cycle) and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.075


Where:

Vhi = reported hot water consumption in gallons per cycle 
(liters per cycle) at maximum fill for each wash/cycle TUF 
combination setting, as provided in section 3.4.1.2. (If a clothes 
washer is equipped with two different wash/rinse temperature 
selections that have the same basic TUF label (one of them has its 
water temperature controlled by thermostatically controlled valves 
and the other one does not), then the higher of the two Vi's 
shall be used for the calculation.)
TUFi = applicable temperature use factor in section 5 or 6. 
[[Page 15361]] 
n = number of wash/rinse TUF combination setting available to the 
user for the clothes washer under test.
TUFw = temperature use factor for warm wash setting.

    For clothes washers equipped with the suds-saver feature:

X1 = frequency of use without the suds-saver feature = 0.86.
X2 = frequency of use with the suds-saver feature = 0.14.
ShH = fresh make-up water measured during suds-return cycle at 
maximum water fill level.

    For clothes washers not equipped with the suds-saver feature:
[GRAPHIC][TIFF OMITTED]TP23MR95.076


and
[GRAPHIC][TIFF OMITTED]TP23MR95.077


Where:
Vhj = reported hot water consumption in gallons per cycle 
(liters per cycle) at minimum fill for each wash/rinse TUF 
combination setting, as provided in section 3.4.1.3. (If a clothes 
washer is equipped with two different wash/rinse temperature 
selections that have the same basic TUF label (one of them has its 
water temperature controlled by thermostatically controlled valves 
and the other one does not), then the higher of the two Vj's 
shall be used for the calculation.)
TUFj = applicable temperature use factor in section 5 or 6.
ShL = fresh hot make-up water measured during suds-return cycle 
at minimum water fill level.
n = as defined above.
TUFw = as defined above.
X1 = as defined above.
X2 = as defined above.

    4.1.1.2  Total per-cycle hot water energy consumption for 
maximum and minimum water fill levels. Calculate the total per-cycle 
hot water energy consumption for the maximum water fill level, 
Emax and for the minimum water level, Emin, expressed in 
kilowatt-hours per cycle and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.078


Where:

T = temperature rise = 90 deg.F (50 deg.C).
K = water specific heat = 0.00240 kWh/(gal deg.F) [0.00114 
kWh/(L deg.C)].
Vhmax = as defined in section 4.1.1.1.
MF = multiplying factor to account for absence of test load=0.94 for 
top-loader vertical axis clothes washers that are sensor filled, 1.0 
for all other clothes washers

.and:
[GRAPHIC][TIFF OMITTED]TP23MR95.079


Where:

T = as defined above.
K = as defined above.
Vhmin = as defined in section 4.1.1.1.
MF = as defined in section 4.1.1.2.

    4.1.1.3  Total weighted per-cycle hot water energy consumption 
expressed in kilowatt-hours. Calculate the total weighted per cycle 
hot water energy consumption, ET, expressed in kilowatt-hours 
per cycle and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.080


Where:

Fmax=usage fill factor=0.72
Fmin=usage fill factor=0.28
Emax=as defined in section 4.1.1.2.
Emin=as defined in section 4.1.1.2.

    4.1.1.4  Per-cycle machine electrical energy consumption. The 
value recorded in section 3.4.1.1 is the per-cycle machine 
electrical energy consumption, ME, expressed in kilowatt-hours 
per cycle.
    4.1.1.5  Per-cycle water energy consumption using gas-heated or 
oil-heated water. Calculate for the normal cycle the per-cycle water 
consumption, ETG, using gas heated or oil-heated water, 
expressed in BTU per cycle (megajoules per cycle) and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.082


Where:

e = nominal gas or oil water heater efficiency=0.75.
ET = as defined in section 4.1.1.3.

    4.1.1.6  Total per-cycle energy consumption when electrically 
heated water is used. Calculate for the normal cycle the total per-
cycle energy consumption, ETE, using electrically heated water, 
expressed in kilowatt-hours per cycle and defined as:

ETE=ET+ME

Where:

ET = as defined in section 4.1.1.3
ME = as defined in section 4.1.1.4.

    4.1.2  Water-heating clothes washers.
    4.1.2.1  Per-cycle temperature-weighted energy consumption for 
maximum and minimum water fill levels. Calculate for the cycle under 
test the per-cycle temperature weighted energy consumption for the 
maximum water fill level, Emax, and for the minimum water fill 
level, Emin, expressed in kilowatt-hours per cycle and defined 
as:
[GRAPHIC][TIFF OMITTED]TP23MR95.083


and,
[GRAPHIC][TIFF OMITTED]TP23MR95.084


Where:

Eht,max = as defined in section 3.2.2.1.1
Eh,max = as defined in section 3.2.2.1.2
Ew,max = as defined in section 3.2.2.1.3
Ec,max = as defined in section 3.2.2.1.4
Eht,min = as defined in section 3.2.2.3.1
Eh,min = as defined in section 3.2.2.3.2
Ew,min = as defined in section 3.2.2.3.3
Ec,min = as defined in section 3.2.2.3.4

    4.1.2.2  Total weighted per-cycle energy consumption expressed 
in kilowatt-hours. Calculate the total weighted per cycle energy 
consumption, ET, expressed in kilowatt-hours per cycle and 
defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.085


Where:

Fmax = as defined in section 4.1.1.3.
Fmin = as defined in section 4.1.1.3.
Emax = as defined in section 4.1.2.1.
Emin = as defined in section 4.1.2.1

    4.2  Per-cycle energy consumption for removal of moisture from 
test load. Calculate the per-cycle energy required to remove the 
moisture of the test load, moisture removal energy, HV, 
expressed in kilowatt-hours per cycle and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.086


Where:

W2 = Weighted test load after normal cycles, in lbs (kg).
    = [(Wmax x Fmax)+(Wmin x Fmin)].
Wmax = as defined in section 3.4.3.
Wmin = as defined in section 3.4.3.
Fmax = as defined in section 4.1.1.3.
Fmin = as defined in section 4.1.1.3.
W1 = weighted reference weight (bone dry) of test load.
    = 5.88 lbs (2.42 kg) for standard size clothes washers.
    = 3 lbs (1.36 kg) for compact size clothes washers.
DEF = nominal energy required for a clothes dryer to remove 
moisture from clothes, 0.5 kWh/lbs (1.1 kWh/kg).

    4.3  Water consumption.
    4.3.1  Nonwater-heating clothes washers.
    4.3.1.1  Per-cycle temperature-weighted water consumption for 
maximum and minimum water fill levels. Calculate for the cycle under 
test the per-cycle temperature-weighted total water consumption for 
the maximum water fill level, Qmax, and for the minimum water 
fill level, Qmin, expressed in gallons per cycle (liters per 
cycle) and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.087


Where:

 [[Page 15362]] Vhi = hot water consumption in gallons per-
cycle at maximum fill for each wash/rinse TUF combination setting, 
as provided in section 3.4.1.2.
Vci = cold water consumption in gallons per-cycle at maximum 
fill for each wash/rinse TUF combination setting, as provided in 
section 3.4.1.2.
TUFi = applicable temperature use factor in section 5 or 6.
n = number of wash/rinse TUF combination settings available to the 
user for the clothes washer under test.
TUFw = temperature use factor for warm wash setting.

    For clothes washers equipped with suds-saver feature:

X1 = frequency of use without suds-saver feature=0.86
X2 = frequency of use with suds-saver feature=0.14
ShH = fresh hot water make-up measured during suds-return cycle 
at maximum water fill level.
ScH = fresh cold water make-up measured during suds-return 
cycle at maximum water fill level.

    For clothes washers not equipped with suds-saver feature:
[GRAPHIC][TIFF OMITTED]TP23MR95.088


and
[GRAPHIC][TIFF OMITTED]TP23MR95.089


Where:

Vhj = hot water consumption in gallons per cycle (liters per 
cycle) at minimum fill for each wash/rinse TUF combination setting, 
as provided in section 3.4.1.3.
Vcj = cold water consumption in gallons per cycle (liters per 
cycle) at minimum fill for each wash/rinse TUF combination setting, 
as provided in section 3.4.1.3.
TUFj = applicable temperature use factor in section 5 or 6.
ShL = fresh hot and cold make-up water measured during suds-
return cycle at minimum water fill level.
ScL = fresh hot and cold make-up water measured during suds-
return cycle at minimum water fill level.
n = as defined in section 4.3.1.1.
TUFw = as defined in section 4.3.1.1.
X1 = as defined in section 4.3.1.1.
X2 = as defined in section 4.3.1.1.

    4.3.1.2  Total weighted per-cycle water consumption. Calculate 
the total weighted per cycle water consumption, QT, expressed 
in gallons per cycle (liters per cycle) and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.090


Where:

Fmax = as defined in section 4.1.1.3.
Fmin = as defined in section 4.1.1.3.
Qmax = as defined in section 4.3.1.1.
Qmin = as defined in section 4.3.1.1.

    4.3.2  Water-heating clothes washers.
    4.3.2.1  Per-cycle temperature-weighted water consumption for 
maximum and minimum water fill levels. Calculate for the cycle under 
test the per-cycle temperature weighted total water consumption for 
the maximum water fill level, Qmax, and for the minimum water 
fill level, Qmin, expressed in gallons per cycle (liters per 
cycle) and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.091


and,
[GRAPHIC][TIFF OMITTED]TP23MR95.092


Where:

Vht,max = as defined in section 3.2.2.2.
Vh,max = as defined in section 3.2.2.2.
Vw,max = as defined in section 3.2.2.2.
Vc,max = as defined in section 3.2.2.2.
Vht,min = as defined in section 3.2.2.4.
Vh,min = as defined in section 3.2.2.4.
Vw,min = as defined in section 3.2.2.4.
Vc,min = as defined in section 3.2.2.4.

    4.3.2.2  Total weighted per-cycle water consumption. Calculate 
the total weighted per cycle water consumption, QT, expressed 
in gallons per cycle (liters per cycle) and defined as:
[GRAPHIC][TIFF OMITTED]TP23MR95.093


Where:

Fmax = as defined in section 4.1.1.3.
Fmin = as defined in section 4.1.1.3.
Qmax = as defined in section 4.3.2.1.
Qmin = as defined in section 4.3.2.1.

    4.3.3  Water consumption factor. Calculate the water consumption 
factor, WCF, expressed in cubic feet per gallon per cycle (liter per 
liter per cycle), as:
[GRAPHIC][TIFF OMITTED]TP23MR95.094


Where:

C = as defined in section 3.1.1 or 3.1.2.
QT = as defined in section 4.3.1.2 for nonwater-heating clothes 
washers.

    4.4  Modified energy factor.
    4.4.1  Nonwater-heating clothes washers. Calculate the modified 
energy factor, MEF, expressed in cubic feet per kilowatt-hours per 
cycle (liters per kilowatt-hours per cycle), as:
[GRAPHIC][TIFF OMITTED]TP23MR95.095


Where:

C = as defined in section 3.1.1 or 3.1.2.
ME = as defined in section 4.1.1.4.
ET = as defined in section 4.1.1.3.
HV = as defined in section 4.2.

    4.4.2  Water-heating clothes washers. Calculate the modified 
energy factor, MEF, expressed in cubic feet per kilowatt-hours per 
cycle (liters per kilowatt-hours per cycle), as:
[GRAPHIC][TIFF OMITTED]TP23MR95.096


Where:

C = as defined in section 3.1.1 or 3.1.2.
ET = as defined in section 4.1.2.2.
HV = as defined in section 4.2.

5. Applicable Temperature Use Factors for Determining Hot Water 
Usage for Various Wash/Rinse Temperature Selections for All 
Automatic Clothes Washers

    5.1  Five-temperature selection (n=5).

------------------------------------------------------------------------
                                                            Temperature 
             Wash/rinse temperature setting                 use factor  
                                                               (TUF)    
------------------------------------------------------------------------
Hot/Warm................................................            0.18
Hot/Cold................................................             .12
Warm/Warm...............................................             .30
Warm/Cold...............................................             .25
Cold/Cold...............................................             .15
------------------------------------------------------------------------

    5.2  Four-temperature selection (n=4).

------------------------------------------------------------------------
                                                            Temperature 
             Wash/rinse temperature setting                 use factor  
                                                               (TUF)    
------------------------------------------------------------------------
Alternate I:                                                            
  Hot/Warm..............................................            0.18
  Hot/Cold..............................................             .12
  Warm/Cold.............................................             .55
  Cold/Cold.............................................             .15
Alternate II:                                                           
  Hot/Warm..............................................            0.18
  Hot/Cold..............................................             .12
  Warm/Warm.............................................             .30
  Warm/Cold.............................................             .40
Alternate III:                                                          
  Hot/Cold..............................................            0.12
  Warm/Warm.............................................             .18
  Warm/Cold.............................................             .55
  Cold/Cold.............................................             .15
------------------------------------------------------------------------

    5.3  Three-temperature selection (n=3).

------------------------------------------------------------------------
                                                            Temperature 
             Wash/rinse temperature setting                 use factor  
                                                               (TUF)    
------------------------------------------------------------------------
Alternate I:                                                            
  Hot/Warm..............................................            0.30
  Warm/Cold.............................................             .55
  Cold/Cold.............................................             .15
Alternate II:                                                           
  Hot/Cold..............................................            0.30
  Warm/Cold.............................................             .55
  Cold/Cold.............................................             .15
Alternate III:                                                          
  Hot/Cold..............................................            0.30
  Warm/Warm.............................................             .55
  Cold/Cold.............................................             .15
------------------------------------------------------------------------

6. Applicable Temperature Use Factors for Determining Hot Water 
Usage for Various Wash/Rinse Temperature Settings for All Semi-
Automatic Clothes Washers

    6.1  Six-temperature settings (n=6).

                                                                        
[[Page 15363]]                                                          
------------------------------------------------------------------------
                                                            Temperature 
             Wash/rinse temperature setting                 use factor  
                                                               (TUF)    
------------------------------------------------------------------------
Hot/Hot.................................................             .15
Hot/Warm................................................             .09
Hot/Cold................................................             .06
Warm/Warm...............................................             .42
Warm/Cold...............................................             .13
Cold/Cold...............................................             .15
------------------------------------------------------------------------

Sec. 430.62  [Amended]

    7. Section 430.62 (a)(2) is amended by adding ``energy factor 
(for clothes washers, clothes dryers, and dishwashers)'' after 
``(for pool heaters),'' and before ``and annual fuel utilization 
efficiency''.

[FR Doc. 95-4048 Filed 3-22-95; 8:45 am]
BILLING CODE 6450-01-P