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Purging the unit
On delivery, the indoor unit is loaded with inert gas. All this gas must therefore be purged before connecting the
assembly piping. To purge the inert gas, proceed as follows.
Unscrew the pinch pipe at the end of each refrigerant 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 pinch pipe completely
until you are ready to connect the piping.
Connecting the refrigerant pipe
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 the copper pipe must be clean, dry and free from debris.
The connection procedure for the refrigerant pipes varies according to
the exit position of the pipes from the indoor unit, as seen when facing
the indoor in the "A" side.
Liquid refrigerant port
Gas refrigerant port
Drain hose port
1. Remove the pinch pipe on the pipes and connect the assembly pipes
to each pipe, tightening the nuts, first manually and then with a
torque wrench, a spanner applying the following torque.
Outer Diameter
6.35 mm
9.52 mm
12.70 mm
15.88 mm
2. Ensure there are no kinks or cracks on pipe bends.
A
Gas refrigerant port
Liquid refrigerant port
Drain hose connection port
The designs and shape are subject to change according to the model.
34
Torque
140~180
350~430
500~620
690~830
The designs and shape are subject to change
according to the model.
Refrigerant oil
Torque wrench
14~18
34~42
49~61
68~82
Spanner
Flare nut
Union
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