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Federal Register / Vol. 86, No. 193 / Friday, October 8, 2021 / Rules and Regulations
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3.6.4 For a clothes dryer with a switch or other means that can be optionally selected by the end user to achieve a lower-power inactive/off mode state than the default inactive/off mode state measured in section 3.6.3 of this appendix, after performing the measurement in section 3.6.3 of this appendix, activate the switch or other means to the position resulting in the lowest power consumption and repeat the measurement procedure described in section 3.6.3 of this appendix. Measure and record the lowest inactive/off mode power, Plowest, in watts.
4.
4.1 Total per-cycle electric dryer energy consumption. Calculate the total electric dryer energy consumption per cycle, Ece, expressed in kilowatt-hours per cycle and defined as:
Ece = 53.5/IMC FMC Et field use, Where:
Et = the energy recorded in section 3.4.5 of this appendix.
53.5 = an experimentally established value for the percent reduction in the moisture content of the test load during a laboratory test cycle expressed as a percent.
field use = field use factor, = 1.18 for clothes dryers with time termination control systems only without any automatic termination control functions.
= 1.04 for clothes dryers with automatic control systems that meet the requirements of the definition for automatic termination control in section 1.4 of this appendix, including those that also have a supplementary timer control, or that may also be manually controlled.
IMC = the moisture content of the wet test load as recorded in section 3.4.2 of this appendix.
FMC = the moisture content of the dry test load as recorded in section 3.4.3 of this appendix.
4.2 Per-cycle gas dryer electrical energy consumption. Calculate the gas dryer electrical energy consumption per cycle, Ege, expressed in kilowatt-hours per cycle and defined as:
Ege = 53.5/IMC FMC Ete field use, Where:
Ete = the energy recorded in section 3.4.6.1
of this appendix.
field use, 53.5, MCw, and MCd as defined in section 4.1 of this appendix.
4.3 Per-cycle gas dryer gas energy consumption. Calculate the gas dryer gas energy consumption per cycle, Egg, expressed in Btus per cycle and defined as:
Egg = 53.5/MCw MCd Etg field use GEF
Where:
Etg = the energy recorded in section 3.4.6.2
of this appendix.
GEF = corrected gas heat value Btu per cubic feet as defined in section 3.4.6.3 of this appendix.
field use, 53.5, IMC, and FMC as defined in section 4.1 of this appendix.

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4.5 Per-cycle standby mode and off mode energy consumption. Calculate the clothes dryer per-cycle standby mode and off mode energy consumption, ETSO, expressed in kilowatt-hours per cycle and defined as:
ETSO = Pdefault Sdefault + Plowest Slowest K/283
Where:
Pdefault = Default inactive/off mode power, in watts, as measured in section 3.6.3 of this appendix.
Plowest = Lowest inactive/off mode power, in watts, as measured in section 3.6.4 of this appendix for clothes dryer with a switch or other means that can be optionally selected by the end user to achieve a lower-power inactive/off mode than the default inactive/off mode;
otherwise, Plowest=0.
Sdefault = Annual hours in default inactive/off mode, defined as 8,620 if no optional lowest-power inactive/off mode is available; otherwise 4,310.
Slowest = Annual hours in lowest-power inactive/off mode, defined as 0 if no optional lowest-power inactive/off mode is available; otherwise 4,310.
K = Conversion factor of watt-hours to kilowatt-hours = 0.001.
283 = Representative average number of clothes dryer cycles in a year.
8,620 = Combined annual hours for inactive and off mode.
4,310 = One-half of the combined annual hours for inactive and off mode.

8. Appendix D2 to subpart B of part 430 is amended by:
a. Revising the introductory note;
b. Adding section 0;
c. Revising section 1.3;
d. Removing the word clothes, in section 1.6, and adding in its place cloths;
e. Removing sections 1.8, 1.15, and 1.19;
f. Redesignating sections 1.9 through 1.11 as sections 1.8 through 1.10, sections 1.13 and 1.14 as sections 1.14
and 1.15, and section 1.20 as section 1.19;
g. Adding new sections 1.11, 1.13, and 1.20;
h. Removing the word clasification, in section 1.16, and adding in its place classification;
i. Revising the first sentence of section 2.1.1 and revising section 2.1.2;
j. Revising the first sentence of section 2.1.3;
k. Revising sections 2.2.1, 2.3.2.1, and 2.3.2.2;
l. Adding section 2.3.2.3;
m. Redesignating section 2.4.1 as section 2.4.1.1;
n. Adding new section 2.4.1;
o. Revising newly redesignated 2.4.1.1;
p. Revising sections 2.7.1, 2.7.2, and 2.8.1;
q. In section 3.1, in the last sentence of the introductory text, adding the text

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to the nearest 0.1 cubic foot following the text is calculated;
r. Revising sections 3.3.1, 3.3.2, 3.4.1, 3.4.2, and 3.4.3;
s. Removing section 3.5;
t. Redesignating sections 3.6, 3.6.1, and 3.6.2 as sections 3.5, 3.5.1, and 3.5.2, respectively;
u. Revising newly redesignated sections 3.5, 3.5.1, and 3.5.2;
v. Adding sections 3.5.3 and 3.5.4;
w. Revising sections 4.1, 4.2, 4.3, 4.4, and 4.5;
x. Adding section 4.5.1;
y. Removing section 4.7; and z. Redesignating section 4.8 as section 4.7.
The revisions and additions read as follows:
Appendix D2 to Subpart B of Part 430
Uniform Test Method for Measuring the Energy Consumption of Clothes Dryer Note: The procedures in either appendix D1 to this subpart or this appendix must be used to determine compliance with energy conservation standards for clothes dryers manufactured on or after January 1, 2015.
Manufacturers must use a single appendix for all representations, including certifications of compliance, and may not use appendix D1 to this subpart for certain representations and this appendix for other representations. Percycle standby mode and off mode energy consumption in section 4.5 of this appendix is calculated using the value for the annual representative average number of clothes dryer cycles in a year specified in section 4.5.1a of this appendix until the compliance date of any amended energy conservation standards for these products. Beginning on the compliance date of any amended energy conservation standards for these products per-cycle standby mode and off mode energy consumption in section 4.5 of this appendix is calculated using the value for the annual representative average number of clothes dryer cycles in a year specified in section 4.5.1b of this appendix.
0. Incorporation by Reference DOE incorporated by reference in 430.3
the entire standard for AHAM HLD1 and IEC 62301, however, only enumerated provisions of those documents are applicable to this appendix. In cases where there is a conflict between any industry standards and this appendix, the language of the test procedure in this appendix takes precedence over the industry standards.
1 AHAM HLD1:
i Section 3.3.5.1 Standard Simulator as referenced in sections 2.1.2 through 2.1.3 of this appendix.
ii Reserved 2 IEC 62301:
i Section 5, Paragraph 5.1, Note 1 as referenced in section 3.5.2 of this appendix.
ii Section 5, Paragraph 5.3.2 Sampling Method as referenced in section 3.5.3 of this appendix.

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