... cell material.REFRIGERANT CIRCUITCopper tube connection with charge valves, filter, thermostatic expansion valve (capillary for mod. 4.5-14), gas-liquid ... water inlet/outlet connectors, water discharge connectors, air vent valve, mod.4.5-30 the user side is complete also ... switch,Source side water pump,Anti-vibration rubber,Metallic filter for the water circuit.Energy savinghigh effcient and erengy ...