8
Purging the unit
1 Unscrew the caps at the end of each pipe.
Result: All inert gas escapes from the indoor unit.
• To prevent dirt or foreign objects from getting into the pipes
during installation, do NOT remove the caps completely until you
are ready to connect the piping.
NOTE
There are two refrigerant pipes of differing diameters:
A smaller one for the liquid refrigerant
A larger one for the gas refrigerant
The inside of copper pipe must be clean & has no dust.
1
Before connecting the refrigerant pipe, open the cover side.
2
Remove the pinch pipe on the pipes and connect the assembly pipes
to each pipe, tightening the nuts, rst manually and then with a torque
wrench, a spanner applying the following torque.
Outer Diameter
Torque
kgf•cm N•m
ø
6.35 mm 140~180 14~18
ø
9.52 mm 350~430 34~42
ø
12.70 mm 500~620 49~61
ø
15.88 mm 690~830 68~82
Must apply refrigerant oil on the aring area to prevent a leak.
NOTE
3 Be sure that there must be no crack or kink on the bended area.
If bracket at right side be disturbed when connecting the pipe, the
installer can detach it by removing 2 screws. But, reassemble plate
after connecting the pipe.
NOTE
Refrigerant oil
Torque wrench
Flare nut
Union
Spanner
Connecting the refrigerant pipe
On delivery, the indoor unit is loaded with an inert Nitrogen gas. All this gas must therefore be purged before
connecting the assembly piping. To purge the inert gas, proceed as follows.
Side cover
The designs and shape are subject to change
according to the model.
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