1, Air Cooled Heat Pump 2, Twin-screw compressor 3, SIEMENS PLC control 4, Provide ... cold water 5, CE, SGS, this is Air cooled heat pump with two compressors, and has following aspects.1. Cooling capacity ... conditions: outside the air-dry-bulb temperature is 7 degrees, wet bulb temperature is 6 degrees, hot water outlet temperature is ... .11. Free step-down triangle stars starter Air Source Heat Pump