... 6 running mode as below, meet more requirements of clients.1, Cooling,2, heating, 3, hot water only,4, ... close cell material.REFRIGERANT CIRCUITCopper tube connection with charge valves, filter, thermostatic expansion valve (capillary for mod. 4.5-14), ... -vibration rubber,Metallic filter for the water circuit.Energy savinghigh effcient and erengy saving air condtioning system that provides cooling ...