Note:

Prior to December 4, 2023, manufacturers must use the results of testing under either this appendix or § 431.96 as it appeared in the 10 CFR parts 200-499 edition revised as of January 1, 2021, to determine compliance with the relevant standard from § 431.97 as that standard appeared in the January 1, 2021, edition of 10 CFR parts 200-499. On or after December 4, 2023, manufacturers must use the results of testing generated under this appendix to demonstrate compliance with the relevant standard from § 431.97 as that standard appeared in the January 1, 2021, edition of 10 CFR parts 200-499.

Beginning December 4, 2023, if manufacturers make voluntary representations with respect to the integrated energy efficiency ratio (IEER) of single packaged vertical air conditioners and single package vertical heat pumps, such representations must be based on testing conducted in accordance with appendix G1 to this subpart.

For any amended standards for single packaged vertical air conditioners and single package vertical heat pumps based on IEER published after January 1, 2021, manufacturers must use the results of testing under appendix G1 to this subpart to determine compliance. Representations related to energy consumption must be made in accordance with the appropriate appendix that applies (i.e., this appendix or appendix G1) when determining compliance with the relevant standard. Manufacturers may also use appendix G1 to certify compliance with any amended standards prior to the applicable compliance date for those standards.

1. Incorporation by Reference.

DOE incorporated by reference in § 431.95 the entire standard for AHRI 390-2021 and ASHRAE 37-2009. However, only certain enumerated provisions of AHRI 390-2021 and ANSI/ASHRAE 37-2009 are required or excluded as listed in this section 1. To the extent there is a conflict between the terms or provisions of a referenced industry standard and this appendix, the appendix provisions control, followed by AHRI 390-2021, followed by ANSI/ASHRAE 37-2009.

1.1. Only the following provisions of AHRI 390-2021 apply:

(a) Section 3—Definitions (omitting sections 3.1, 3.2, 3.5, 3.12, and 3.15) (b) Section 5—Test Requirements (omitting section 5.8.5) (c) Section 6—Rating Requirements (omitting sections 6.1.1 and 6.2 through 6.5) (d) Appendix A. “References—Normative” (e) Appendix D. “Indoor and Outdoor Air Condition Measurement—Normative” (f) Appendix E. “Method of Testing Single Package Vertical Units—Normative”

1.2. All provisions of ANSI/ASHRAE 37-2009 apply except for the following provisions:

(a) Section 1—Purpose (b) Section 2—Scope (c) Section 4—Classifications

2. General. Determine cooling capacity (Btu/h) and energy efficiency ratio (EER) for all single package vertical air conditioners and heat pumps and coefficient of performance (COP) for all single package vertical heat pumps, in accordance with the specified sections of AHRI 390-2021 and the specified sections of ANSI/ASHRAE 37-2009. Only identified provisions of AHRI 390-2021 are applicable and certain sections of ANSI/ASHRAE 37-2009 are inapplicable, as set forth in section 1 of this appendix. In addition, the instructions in section 3 of this appendix apply to determining EER and COP. Any subsequent amendment to a referenced document by a standard-setting organization will not affect the test procedure in this appendix, unless and until the test procedure is amended by DOE.

3. Test Conditions. The “Standard Rating Full Load Capacity Test, Cooling” conditions for cooling mode tests and “Standard Rating Full Load Capacity Test, Heating” conditions for heat pump heating mode tests specified in Table 3 of section 5.8.3 of AHRI 390-2021 shall be used.

3.1. Optional Representations. Representations of COP for single package vertical heat pumps made using the “Low Temperature Operation, Heating” condition specified in Table 3 of section 5.8.3 of AHRI 390-2021 are optional and are determined according to the applicable provisions in section 1 of this appendix.

3.2. [Reserved]

[87 FR 75169, Dec. 7, 2022]