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Federal Register / Vol. 86, No. 235 / Friday, December 10, 2021 / Proposed Rules
used by the basic model e.g., electric, gas, hydronic, none.
B When certifying compliance with an IEER standard, the following must be certified for each tested combination as required under paragraph a3ivB of this section: The integrated energy efficiency ratio IEER in British thermal units per Watt-hour Btu/Wh; the rated cooling capacity in British thermal units per hour Btu/h; whether the represented values are for a non-ducted, ducted, or SDHV tested combination, or for a mixed representation of any two of the tested combinations; and the outdoor units and indoor units identified in the tested combination.
The following must be certified for each basic model: The types of heating used i.e., electric, gas, hydronic, none; and the refrigerant used to determine the represented values.
xii Variable refrigerant flow multisplit heat pumps other than air-cooled with rated cooling capacity less than 65,000 btu/h:
A When certifying compliance with an EER standard: The energy efficiency ratio EER in British thermal units per Watt-hour Btu/Wh, the coefficient of performance COP, rated cooling capacity in British thermal units per hour Btu/h, and the types of heating used by the basic model e.g., electric, gas, hydronic, none.
B When certifying compliance with an IEER standard, the following must be certified for each tested combination as required under paragraph a3ivB of this section: The integrated energy efficiency ratio IEER in British thermal units per Watt-hour Btu/Wh; the coefficient of performance COP; the rated cooling capacity in British thermal units per hour Btu/h; the rated heating capacity Btu/h; whether the represented values are for a non-ducted, ducted, or SDHV tested combination, or for a mixed representation of any two of the tested combinations; and the outdoor units and indoor units identified in the tested combination.
The following must be certified for each basic model: the types of heating used i.e., electric, gas, hydronic, none; and the refrigerant used to determine the represented values.

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vii Variable refrigerant flow multisplit air-cooled air conditioners except those with rated cooling capacity less than 65,000 Btu/h:
A When certifying compliance with an EER standard: The nominal cooling capacity in British thermal units per hour Btu/h; outdoor units and indoor units identified in the tested
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combination; components needed for heat recovery, if applicable; rated airflow in standard cubic feet per minute scfm for each indoor unit;
rated static pressure in inches of water;
compressor frequency set points;
required dip switch/control settings for step or variable components; a statement whether the model will operate at test conditions without manufacturer programming; any additional testing instructions if applicable; if a variety of motors/drive kits are offered for sale as options in the basic model to account for varying installation requirements, the model number and specifications of the motor to include efficiency, horsepower, open/closed, and number of poles and the drive kit, including settings, associated with that specific motor that were used to determine the certified rating; and which, if any, special features were included in rating the basic model. Additionally, upon DOE
request, the manufacturer must provide a layout of the system set-up for testing including charging instructions consistent with the installation manual.
B When certifying compliance with an IEER standard for requirements in this list pertaining to or affected by indoor units, the requirements must be certified for each tested combination as required under paragraph a3ivB of this section: The nominal cooling capacity in British thermal units per hour Btu/h for each indoor and outdoor unit; identification of the indoor units to be thermally active for each IEER test point; the rated indoor airflow for the full-load cooling and all part-load cooling tests for each indoor unit in standard cubic feet per minute scfm; the indoor airflow-control setting to be used in the full-load cooling test for each indoor unit; system start-up or initialization procedures, including conditions and duration; compressor break-in period duration; the frequency of oil recovery cycles; operational settings for all critical parameters to be controlled at each of the four IEER
cooling test conditions; required dip switch/control settings; identification of any system control device required for testing; a hierarchy of instructions for adjustment of critical parameters to reduce cooling capacity during IEER
cooling tests to be used if, using initial critical parameter settings, the measured cooling capacity is more than 3 percent above the target cooling capacity; any additional testing instructions if applicable; and if a variety of motors/
drive kits are offered for sale as options in the basic model to account for varying installation requirements, the
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model number and specifications of the motor to include efficiency, horsepower, open/closed, and number of poles and the drive kit, including settings, associated with that specific motor that were used to determine the certified rating. Instructions for conducting a controls verification procedure as described in Appendix C
of AHRI 12302021, incorporated by reference, see 429.4 at each of the four IEER cooling test conditions must also be provided, including: The required thermostat setpoints to ensure control for 80 F dry-bulb temperature when accounting for set point bias, the starting indoor dry-bulb temperature, and the indoor dry-bulb temperature ramp rate R2. Additionally, the manufacturer must provide a layout of the system set-up for testing including a piping diagram, a power wiring diagram, a control wiring diagram, and identification of the location of the components corresponding to each critical parameter to be controlled, setup instructions for indoor units and outdoor units, and charging instructions consistent with the installation manual.
Also, the manufacturer must certify for which, if any, specific components as listed in paragraph a4i of this section the following provisions are applicable:
1 The indoor unit models in a tested combination within a basic model include both individual indoor unit models distributed in commerce with the specific component and individual indoor unit models distributed in commerce without the specific component;
2 At least one of the individual indoor unit models distributed in commerce without the specific component is otherwise identical to any given individual indoor unit model distributed in commerce with the specific component; and 3 Represented values for the tested combination are based on performance of individual indoor unit models distributed in commerce without the specific component.
viii Variable refrigerant flow multisplit heat pumps other than air-cooled with rated cooling capacity less than 65,000 btu/h:
A When certifying compliance with an EER standard: The nominal cooling capacity in British thermal units per hour Btu/h; rated heating capacity in British thermal units per hour Btu/h;
outdoor units and indoor units identified in the tested combination;
components needed for heat recovery, if applicable; rated airflow in standard cubic feet per minute scfm for each indoor unit; water flow rate in gallons
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