... Features&Advantages: (Warranty: 12 months)1. Safety:water and electric separately.2. Hot water(55°C) can be provided under low ambient ... key operation.Displays error code when having problem,easy for maintenance.4. World famous brand compressor,4-way valve ... case are available,R22,R407C,R410a,R417A,R134A are for optional. Commercial type heat pump(High Temp.)ParametersModelDBT7.5WHHeating CapacitykW7. ...