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6.6 Re-air purging (Re-installation)
Procedure:
1. Confirm that both the 2-way and 3-way valves are set to the closed position.
2. Connect the charge set and a charging cylinder to the service port of the 3-way valve.
Leave the valve on the charging cylinder closed.
3. Air purging.
Open the valves on the charging cylinder and the charge set. Purge the air by loosening the flare nut on
the 2-way valve approximately 45’ for 3 seconds then closing it for 1 minute; repeat 3 times.
After purging the air, use a torque wrench to tighten the flare nut to on the 2-way valve.
4. Check the gas leakage.
Check the flare connections for gas leakage.
5. Discharge the refrigerant.
Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicates 0.3 to 0.5
Mpa.
6. Disconnect the charge set and the charging cylinder, and set the 2-way and 3-way valves to the open
position.
Summary of Contents for 9V SERIES
Page 13: ...11 4 Refrigerant Cycle Diagram Cooling only Heat pump mode...
Page 14: ...12 5 Wiring Diagram 5 1 Indoor Unit Cooling only...
Page 15: ...13 Cooling Heating...
Page 16: ...14 5 2 Outdoor Unit Smaller than 18K model Cooling only...
Page 17: ...15 Cooling Heating...
Page 18: ...16 For 18 K model Cooling only...
Page 19: ...17 Cooling Heating...