GB 37480-2019 English PDF (GB37480-2019)

This Standard specifies energy efficiency grades, technical requirements and test methods of low ambient temperature air source heat pumps (water chiller) packages. This Standard is applicable to the air-water low ambient temperature air source heat pumps (water chiller) packages driven by electric motors and operating at the low ambient temperature; low ambient temperature air source heat pumps water heater for heating; heating-purposed low temperature heat pump water heater for commercial and amp; industrial and similar application. This Standard is not applicable to the low ambient temperature air source multiconnected air conditioning packages and air-air type low ambient temperature air source heat pump packages.