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606.2.2 Equipment Not Covered by Federal Standards
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Equipment not covered by federal minimum efficiency standards shall comply with the minimum efficiency requirements of this section.
The efficiency of ground source heat pumps shall comply with the provisions of Table 606.2.2.1 based on the applicable referenced test procedure.
ENERGY-EFFICIENCY CRITERIA FOR
GROUND SOURCE HEAT PUMPS
|PRODUCT TYPE||MINIMUM |
|Water-to-Air Closed loop||14.1||3.3||ISO 13256-1|
|Water-to-Air Open loop||16.2||3.6||ISO 13256-1|
|Water-to-Water Closed loop||15.1||3.0||ISO 13256-2|
|Water-to-Water Open loop||19.1||3.4||ISO 13256-2|
|Direct Expansion (DX) or Direct GeoExchange (DGX)||15.0||3.5||AHRI 870|
EER = Energy efficiency ratio, COP = Coefficient of performance.
The efficiency of multi-stage ground source heat pumps shall comply with the provisions of Table 606.2.2.1 based on the applicable referenced test procedure.
Stand-alone supply, return and exhaust fans designed for operating with motors over 750 watts (1 hp) shall have an energy efficiency classification of not less than FEG71 as defined in AMCA 205. The total efficiency of the fan at the design point of operation shall be within 10 percentage points of either the maximum total efficiency of the fan or the static efficiency of the fan.