... many running mode:cooling,heating,cooling/heating+hot water,hot water only. Water Source Heat Pump multi-function typeCooling Capacity 4 ... user side is complete also with expansion vessel, water pump and water flow switch.ELECTRIC PANELconsists of:Compressor contactor,Compressor ... hospitals, cinemas, stadiums, recreations, office blocks, factories and so on. water source heat pump (muti-function type)