... requirements of clients.1, Cooling,2, heating, 3, hot water only,4, cooling+hot water(partial heat recovery),5, cooling+more hot ... filter, thermostatic expansion valve (capillary for mod. 4.5-14), gas-liquid separator, high pressure switch and low pressure switch.The ... hospitals, cinemas, stadiums, recreations, office blocks, factories and so on. water source heat pump water heater (muti-function type)