Gree GMV-PD140W/NAB-K

61
DC Inverter Multi
VRF Service Manual
Installation of outdoor unit
Select the installing position correctly.
Build the foundation according to the anchor bolt
position and the dimension of outdoor unit;
Build the damping device properly.
Avoid sharp knock when handling the outdoor unit. The
inclination angle shall not be higher than 15°
Connection of indoor unit and outdoor unit
Tighten the nuts;
Provide proper protection to the outdoor connection
pipe, communication wires and power supply.
Leakage detection under pressure
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it is deemed acceptable if pressure drop is within 0.02MPa. (With the
temperature change by 1
, the pressure will change by approx. 0.01MPa).
Vacuuming
Establish vacuum simultaneously in the gas pipe and liquid pipe;
The vacuuming time shall be long enough.
Put still for 1 hour after vacuuming. It is deemed
acceptable if the pressure will not rise.
Add refrigerant $GGUHIULJHUDQWDFFRUGLQJWRWKHYROXPHDVVSHFL¿HGRQWKHHQJLQHHULQJGUDZLQJ
Open the valve of outdoor unit
Commissioning of complete unit
Remarks:
1) Described above are general working procedures. The procedures might vary with the site conditions.
2) For detailed installation rules, please see the description in each chapter.