The air which contains remaining moisture in the refrigeration
cycle may cause a malfunction on the compressor.
1. To purge the air, push the pin on the gas side 3-way valve
for three seconds using with a hexagonal wrench and set it
free for one minute.
• Repeat this three times.
2. To balance the refrigerant, close the low pressure side
valve on the manifold gauge and release a refrigerant from
the piping through service port until the gauge indicates
0.49 ~ 0.294 MPa.
3. Set the both 3-way valves to open position with the
hexagonal wrench for the unit operation.
2) Air purging
10.6.5. CONNECT THE CABLE TO THE OUTDOOR UNIT
1. Remove the control board cover from the unit by loosening the screw.
2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed flexible cord, type
designation 245 IEC 57 or heavier cord (4 × 1.5 mm
2
).
Power supply cord cable use 3 × 1.5 mm
2
flexible cord, type designation 245 IEC 57 or heavier cord.
3. Secure the cable onto the control board with the holder (clamper).
4. Confirm the SW1 Switch at AUTO position. (CU-3C20DKH)
5. Attach the control board cover back to the original position with the screw.
45
CS-C9DKZW CU-2C18DKH / CS-C9DKZW CU-3C20DKH
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