Refrigerant Collecting; Handling Of The Unit - Gree Versati III Series Owner's Manual

Air-to-water Heat Pump Split Versati

16. Refrigerant Collecting

When relocating or disposing of the indoor/outdoor unit, pump down the system following the procedure below
so that no refrigerant is released into the atmosphere.
(1) Turn off the power supply (circuit breaker).
(2) Connect the low-pressure valve on the gauge manifold to the charge plug (lowpressure side) on the outdoor
unit.
(3) Close the liquid stop valve completely.
(4) Supply power (circuit breaker).
Start-up of the indoor-outdoor communication takes about 3 minutes after the power (circuit breaker) is turned
on. Start the pump-down operation 3 to 4 minutes after the power (circuit breaker) is turned on.
(5) Perform the refrigerant collecting operation.
At the commissioning parameter setting page, by touching "Refri. recovery", it will access to the refrigerant recovery
page.
(6) Fully close the ball valve on the gas pipe side of the outdoor unit when the pressure gauge on the gauge
manifold shows 0.05 to 0 MPa [Gauge] (approx. 0.5 to 0 kgf/cm²) and quickly stop the air conditioner.
When "Refri. recovery" is set to "On", the control panel will go back to the home page. At this time, any
touch operation except ON/OFF will get no response, with a prompt dialog box popping up, saying "The
refrigerant recovery is running!" By touching ON/OFF, refrigerant recovery will quit.
(7) Turn off the power supply (circuit breaker), remove the gauge manifold, and then disconnect the refrigerant
pipes.
• 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
WARNING
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SPLIT TYPE