water source heat pump (water to air, water loop heat pump) compact type or split type,Cooling :2.56-44kw Heating :2.73-47kw water source heat pump(water loop heat pump,3- ... valve) ; high pressure switch and low pressure switch.The heat pump units are complete also with 4-way valve and one ... ,l Compressor protection breaker,l Microprocessor with function displayW water source heat pump,3-44kw