... office buildings, schools, workshops, entertainment places, etc. Name:Air to water heat pump(Heating and hot water) ModelunitCAR-08Rated heating ... valves/thermal expansion valvesRefrigerant R417A, R407C,R410AWorking air temp range −20°C~45°CCompressor Panasonic,Toshiba Remarks:the test ... for underfloor heating systems than radiator systems. An air-to-air system produces warm air, which is circulated by ...