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• When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
• If the refrigerant pipes are disconnected while the compressor is operating and the stop valve (ball valve) is open, the
pressure in the refrigeration cycle could become extremely high if air is drawn in, causing the pipes to burst, personal
injury, etc.
17. Handling of the Unit
During installing or moving the unit, other substances except refrigerant cannot get into the refrigerant pipe and
there shall not be air remained in the pipe.
If air or other substance gets into the pipe, system pressure will increase and compressor will be damaged.
Do not charge refrigerant of other type into the unit during installing or moving. Otherwise, it may cause poor
operation, malfunction, mechanical failure, or even serious safety accident.
If the refrigerant shall be recycled during moving or maintaining, pressure meter must be used. Set the unit in
cooling mode and close the valve at high pressure side (liquid valve) completely. When the reading of pressure
meter ranges 0~0.05MPa (about 30s~40s), close the valve at high pressure side (gas valve) completely, turn off
the unit and cut off power supply.
If refrigerant recycle time is too long, air may get into the system. In this case, system pressure will increase and
compressor will be damaged.
During recycling refrigerant, make sure the liquid valve and gas valve are closed completely, and the power
supply is cut off before disassembling the connection pipe.
If connection pipe is disassembled when the compressor is still operating, air may get into the system. In this
case, system pressure will increase and compressor will be damaged.
During installing the unit, make sure the connection pipe is connected properly before starting the compressor.
If the compressor is started before finishing connection of connection and when the cut-off valve is opened, air
may get into the system. In this case, system pressure will increase and compressor will be damaged.
The indoor unit and outdoor unit shall be connected properly with required wire. The wiring terminal shall be
secured properly without affecting by exterior force directly.
If the wire is not connected properly or the wiring terminal is not secured properly, fire hazard may be caused.
The wire cannot be refit or reconnected in the middle.
When the length of connection wire is not sufficient, please contact the appointed after-sales service center to
purchase a specialized wire with sufficient length.
Air-to-water Heat Pump All in One Versati
WARNING
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