Voglio sapere a riguardo di…

70684

Federal Register / Vol. 86, No. 235 / Friday, December 10, 2021 / Proposed Rules
jspears on DSK121TN23PROD with PROPOSALS2

energy efficiency ratio IEER published after January 1, 2021, manufacturers must use the results of testing under appendix D1 of this subpart to determine compliance.
Representations related to energy consumption must be made in accordance with the appropriate appendix that applies i.e., appendix D or appendix D1 when determining compliance with the relevant standard.
1. Incorporation by Reference.
DOE incorporated by reference in 431.95, the entire standard for ANSI/AHRI 1230
2010. However, only enumerated provisions of that document apply to this appendix, as set forth in paragraph 1 of this section. To the extent there is a conflict, the language of the test procedure in this appendix takes precedence over the referenced test standard.
1 ANSI/AHRI 12302010:

i Section 5.1.2Manufacturer involvement is inapplicable as specified in section 2.1 of this appendix.
ii Section 6.6Verification testing and uncertainty is inapplicable as specified in section 2.2 of this appendix.
2. General. Determine the energy efficiency ratio EER and coefficient of performance COP as applicable in accordance with ANSI/AHRI 12302010; however, the following enumerated provisions of that document are not applicable.
i Section 5.1.2Manufacturer involvement ii Section 6.6Verification testing uncertainty Sections 3 through 6 of this appendix provide additional instructions for determining EER and COP.

3. Optional break-in period. Manufacturers may optionally specify a break-in period, not to exceed 20 hours, to operate the equipment under test prior to conducting the test method specified in this appendix. A
manufacturer who elects to use an optional compressor break-in period in its certification testing should record this periods duration as part of the information in the supplemental testing instructions under 10 CFR 429.43.
4. Refrigerant line length corrections. For test setups where it is physically impossible for the laboratory to use the required line length listed in Table 3 of the ANSI/AHRI
12302010, then the actual refrigerant line length used by the laboratory may exceed the required length and the following cooling capacity correction factors are applied:

Piping length beyond minimum, X
ft
Piping length beyond minimum, Y
m
0 > X 20
20 > X 40
40 > X 60
60 > X 80
80 > X 100
100 > X 120

0 > Y 6.1
6.1 > Y 12.2
12.2 > Y 18.3
18.3 > Y 24.4
24.4 > Y 30.5
30.5 > Y 36.6

5. Additional provisions for equipment setup. The only additional specifications that may be used in setting up the basic model for test are those set forth in the installation and operation manual shipped with the unit.
Each unit should be set up for test in accordance with the manufacturer installation and operation manuals. Sections 5.1 through 5.3 of this appendix provide specifications for addressing key information typically found in the installation and operation manuals.
5.1. If a manufacturer specifies a range of superheat, sub-cooling, and/or refrigerant pressure in its installation and operation manual for a given basic model, any values within that range may be used to determine refrigerant charge or mass of refrigerant, unless the manufacturer clearly specifies a rating value in its installation and operation manual, in which case the specified rating value must be used.
5.2. The airflow rate used for testing must be that set forth in the installation and operation manuals being shipped to the commercial customer with the basic model and clearly identified as that used to generate the DOE performance ratings. If a rated airflow value for testing is not clearly identified, a value of 400 standard cubic feet per minute scfm per ton must be used.
5.3. The test set-up and the fixed compressor speeds i.e., the maximum, minimum, and any intermediate speeds used for testing should be recorded and maintained as part of the test data underlying the certified ratings that is required to be maintained under 10 CFR 429.71.
6. Manufacturer involvement in assessment or enforcement testing. A manufacturers representative will be allowed to witness assessment and/or enforcement testing for variable refrigerant flow multi-split air
VerDate Sep<11>2014

19:04 Dec 09, 2021

Jkt 256001

conditioners and heat pumps. The manufacturers representative will be allowed to inspect and discuss set-up only with a DOE representative. During testing, the manufacturers representative may adjust only the modulating components that are necessary to achieve steady-state operation in the presence of a DOE representative. Only previously documented specifications for setup as specified under sections 4 and 5 of this appendix will be used.

15. Add appendix D1 to subpart F of part 431 to read as follows:

Appendix D1 to Subpart F of Part 431
Uniform Test Method for Measuring the Energy Consumption of Variable Refrigerant Flow Multi-Split Air Conditioners and Heat Pumps Other Than Air-Cooled With Rated Cooling Capacity Less Than 65,000 BTU/H
Note: Manufacturers must use the results of testing under this appendix to determine compliance with any amended standards for variable refrigerant flow multi-split air conditioners and heat pumps provided in 431.97 that are published after January 1, 2021, and that rely on integrated energy efficiency ratio IEER. Representations related to energy consumption must be made in accordance with the appropriate appendix that applies i.e., appendix D or appendix D1
when determining compliance with the relevant standard.
1. Incorporation by Reference.
DOE incorporated by reference in 431.95, the entire standard for AHRI Standard 1230
2021, and ANSI/ASHRAE Standard 372009.
However, only enumerated provisions of these documents apply to this appendix, as set forth in paragraphs 1 and 2 of this
PO 00000

Frm 00042

Fmt 4701

Sfmt 4702

Cooling capacity correction %
1 2
3 4
5 6

section. To the extent there is a conflict, the language of the test procedure in this appendix takes precedence over the referenced test standards.
1 AHRI 12302021:
i Section 3Definitions, except section 3.10, is applicable as specified in section 2.1.1 of this appendix, ii Section 5Test Requirements, except section 5.1.2, is applicable as specified in section 2.1.2 of this appendix, iii Section 6Rating Requirements, except sections 6.3.3 and 6.5, is applicable as specified in section 2.1.3 of this appendix, iv Section 11Calculations is applicable as specified in section 2.1.4 of this appendix, v Section 12Symbols, Subscripts and Superscripts is applicable as specified in section 2.1.5 of this appendix, vi Appendix EANSI/ASHRAE Standard 372009 Clarifications/Exceptions Normative is applicable as specified in section 2.1.6 of this appendix, 2 ANSI/ASHRAE 372009 including Errata Sheet issued October 3, 2016:
i Section 1Purpose is inapplicable as specified in section 2.2.1 of this appendix, ii Section 2Scope is inapplicable as specified in section 2.2.2 of this appendix, and iii Section 4Classification is inapplicable as specified in section 2.2.3 of this appendix.
2 General. Determine IEER and coefficient of performance COP as applicable in accordance with AHRI 1230
2021 and ANSI/ASHRAE 372009 including Errata Sheet issued on October 3, 2016;
however, only the following enumerated provisions of those documents apply.
2.1. Applicable Sections of AHRI 1230
2021

E:FRFM10DEP2.SGM

10DEP2