1, Air Cooled Heat Pump 2, Twin-screw compressor 3, SIEMENS PLC ... hot water and cold water 5, CE, SGS, this is Air cooled heat pump with two compressors, and has following aspects ... degrees. Ambient temperature is 35 degrees Heating conditions: outside the air-dry-bulb temperature is 7 degrees, wet bulb temperature is ... or R134A refrigerant.11. Free step-down triangle stars starter Air Source Heat Pump