Gree GC201306 -1 Service Manual page 70

Super Free Match
Service Manual
Installation of outdoor unit
Connection of indoor unit and outdoor unit
Leakage detection under pressure
Open the valve of outdoor unit
Commissioning of complete unit
Remarks:
a. Described above are general working procedures. The procedures might vary with the site conditions.
b. For detailed installation rules, please see the description in each chapter
INSTALLATION 66
Purge and make leakage
detection under pressure
Thermal insulation
Vacuuming
Add refrigerant
◆ Purge the system clean.
◆ Keep the pressure for 24 hours
◆ Except for the influence by temperature, it is deemed
acceptable if pressure drop is within 0.02MPa. (With the
temperature change by 1 , the pressur
approx. 0.01MPa)
◆ The thermal insulation tube must meet the specifications.
◆ Seal between the thermal insulation pipes to avoid air
entry.
◆ 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°.
◆ Tighten the nuts.
◆ Provide proper protection to the outdoor connection pipe,
communication wires and power supply.
◆ Keep the pressure for 24 hours. Except for the influence by
temperature, 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).
◆ 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 according to the volume as specified on the
engineering drawing.
℃ e will change by