... , filter, thermostatic expansion valve, gas-liquid separator, high pressure switch and low pressure switch.The heat pump ... controller,PID regulatorSecurityOverload, high voltage, wrong Phase, water, oil, antifreeze switch, high temperature protectionCompressorFormFlexible all closed scroll ... LossKpa≤40Interface Dim.DN(mm)2525253232324040405050 LTWH Series High Quality Ground Source Heat Pump for Houses ...