41
Connecting the refrigerant pipe
There are two refrigerant pipes of differing diameters:
t
A smaller one for the liquid refrigerant
t
A larger one for the gas refrigerant
t
The inside of copper pipe must be clean & has no dust.
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.
t
Liquid refrigerant port
t
Gas refrigerant port
t
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 (mm)
Torque
LHGtDN
/tN
6.35
140~180
14~18
9.52
350~430
34~42
12.70
500~620
49~61
15.88
690~830
68~82
NOTE
t
Must apply refrigerant oil on the flaring area to prevent a
leak.
Refrigerant oil
Torque wrench
Flare nut
Union
Spanner
2.
Ensure there are no kinks or cracks on pipe bends.
Drain hose connection port
Gas refrigerant port
Liquid refrigerant port
A
The designs and shape are subject to change according to the model.
ENGLISH
