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Federal Register / Vol. 86, No. 194 / Tuesday, October 12, 2021 / Rules and Regulations
56825

TABLE 1TEMPERATURE SETTINGS FOR FREEZERS
First test
Second test Energy calculation based on:

Setting Mid

Results
Setting
Below standard reference temperature.

Warmest

Above standard reference temperature.

Coldest

5.3. Test Cycle Energy Calculations Section 5.8.2, Energy Consumption, of HRF12019 applies to this test procedure, except as follows:
a For freezers: To demonstrate compliance with the energy conservation
ET

=

Results
standards at 10 CFR 430.32a applicable to products manufactured on or after September 15, 2014, IET, expressed in kilowatt-hours per cycle, equals 0.23 for a product with one or more automatic icemakers and otherwise equals 0 zero.

K
1440 XTl
X

EP1

+

EP2 -

Second Test Only.
First and Second Test.
First and Second Test.
Model may not be certified as compliant with energy conservation standards based on testing of this unit. Confirm that unit meets product definition. If so, see section 6 of this appendix.

b In place of section 5.8.2.1.2 of HRF1
2019, use the calculations provided in this section. For units with long-time automatic defrost control using the two-part test period, the test cycle energy shall be calculated as:

T2 12
EP1 x Tl x CT x K

5.3a of this appendix with the following addition:
CT shall be calculated equivalent to:

default values of 6 and 96 shall be used, respectively.
F = ratio of per day energy consumption in excess of the least energy and the maximum difference in per-day energy consumption and is equal to 0.20.

Where:
CTL = the least or shortest compressor run time between defrosts used in the variable defrost control algorithm greater than or equal to 6 but less than or equal to 12 hours, or the shortest compressor run time between defrosts observed for the test if it is shorter than the shortest run time used in the control algorithm and is greater than 6 hours, or 6 hours if the shortest observed run time is less than 6 hours, in hours rounded to the nearest tenth of an hour;
CTM = the maximum compressor run time between defrosts in hours rounded to the nearest tenth of an hour greater than CTL but not more than 96 hours;
For variable defrost models with no values of CTL and CTM in the algorithm, the
6. Test Procedure Waivers To the extent that the procedures contained in this appendix do not provide a means for determining the energy consumption of a basic model, a manufacturer must obtain a waiver under 430.27 to establish an acceptable test procedure for each such basic model. Such instances could, for example, include situations where the test setup for a particular basic model is not clearly defined by the provisions of this appendix. For details regarding the criteria and procedures for obtaining a waiver, please refer to 430.27.
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Where:
ET = test cycle energy expended in kilowatthours per day;
1440 = conversion factor to adjust to a 24hour average use cycle in minutes per day;
K = dimensionless correction factor of 0.7 for chest freezers and 0.85 for upright freezers.
EP1 = energy expended in kilowatt-hours during the first part of the test;
EP2 = energy expended in kilowatt-hours during the second part of the test;
T1 and T2 = length of time in minutes of the first and second test parts, respectively;
CT = defrost timer run time or compressor run time between defrosts in hours required to go through a complete cycle, rounded to the nearest tenth of an hour;
12 = factor to adjust for a 50-percent run time of the compressor in hours per day.
c In place of sections 5.8.2.1.3 and 5.8.2.1.4 of HRF12019, use the calculations provided in this section. For units with variable defrost control, the test cycle energy shall be calculated as set forth in section
Below standard reference temperature.
Above standard reference temperature.
Below standard reference temperature.
Above standard reference temperature.