Packaged water source heat pump (water to water) 4.5kw-75kw,LCD automatic controller,famous scrow compressor, energy saving. Water Source Heat ... side is complete also with expansion vessel, water pump and water flow switch.ELECTRIC PANELconsists of:Compressor contactor,Compressor ... must be installed in factory,Source side water flow switch,Source side water pump,Anti-vibration rubber,Metallic filter ...