Federal Register - August 10, 2021
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Fuente: Federal Register
Federal Register / Vol. 86, No. 151 / Tuesday, August 10, 2021 / Notices part 431, subpart R, appendix C
Appendix C, except that the liquid inlet saturation temperature test condition and liquid inlet subcooling temperature test condition shall be modified to 38 F and 5 F, respectively,
for both walk-in refrigerator unit coolers and walk-in freezer unit coolers, as detailed below. All other requirements of Appendix C and DOEs regulations remain applicable.
43641
In Appendix C, under section 3.1.
General modifications: Test Conditions and Tolerances, revise section 3.1.5., to read as follows:
3.1.5. Tables 15 and 16 shall be modified to read as follows:
TABLE 15-REFRIGERATOR UNIT COOLER
Unit Unit cooler cooler air air entering Liquid entering relative Saturated inlet Liquid inlet Test dry-bulb, humidity, suction saturation subcooling Compressor OF
%
temp, F temp, F temp, F
capacity description Test ob.iective
Off Cycle Fan Power
35
<50
-
-
Refrigeration Capacity Suction A
35
<50
25
38
Compressor Measure fan Off input power during compressor off cycle.
-
5
Compressor Determine Net On Refrigeration Capacity of Unit Cooler.
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Note: Superheat to be set according to equipment specification in equipment or installation manual. If no superheat specification is given, a default superheat value of 6.5 F shall be used.
The superheat setting used in the test shall be reported as part of the standard rating.
