... .Use the special compressor for heat pump water heater.3.Hot water temperature reaches 65°C.4.Green Refrigerant: R417A ... conditions: environmental dry ball temperature 20°C,wet ball temperature 15°C,initial water temperature 15°C,terminal water temperature 55°C. 2. ... conditions: environmental dry ball temperature 7°C,wet ball temperature 6°C,inlet water temperature 30°C,outlet water temperature 35°C. 3. ...