... R410a, R290, R134a, R22Characters:Anti-freeze thermos Water Source Heat Pump use underground water or circulated water or brine ... glass which must be installed in factory,Source side water flow switch,Source side water pump,Anti-vibration rubber,Metallic ... room and the special room,Applicable to hotels, villas, hospitals, cinemas, stadiums, recreations, office blocks, factories and so on. water source ...