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Connecting the Indoor Unit Assembly Piping
There are two refrigerant pipes of differing diameters:
A smaller one(9.52mm, 3/8") for the liquid refrigerant
A larger one(19.05mm, 3/4") for the gas refrigerant
The thickness of tube should not less than 1.0mm.
The inside of copper tube 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.
Liquid refrigerant port
Gas refrigerant port
Drain hose connection port
Remove the pinch pipe on the pipes and connect the assembly pipes to
1
each pipe, tightening the nuts, first manually and then with a torque
wrench, a spanner applying the following torque.
Outer Diameter
9.52 mm (3/8")
19.05 mm (3/4")
If the pipes must be shortened refer to page 18.
N N
N N
o o
o o
t t
t t
e e
e e
Must use insulator which is thick enough to cover the refrigerant tube to
2
protect the condensate water on the outside of pipe falling onto the floor
and the efficiency of the unit will be better.
Cut off any excess foam insulation.
3
Be sure that there must be no crack or wave on the bended area.
4
It would be necessary to double the insulation thickness (10mm or more)
5
to prevent condensation even on the insulator when if the installed area is
warm and humid.
Shape an oil trap as shown in figure the oil trap must be formed every
6
level difference of 10m.
Torque
250~280 kgf•cm
990~1210 kgf•cm
A
Gas refrigerant port
Liquid
refrigerant port
Drain hose connection port
a. When the indoor unit is above the outdoor
unit
Indoor unit
Outdoor unit
Oil trap (Must be install
every 10m)
b. When the outdoor unit is above the indoor
unit
Outdoor unit
Oil trap(Must be installed
every 10m)
Indoor unit
Radius
5cm
Oil trap
(suction tube)
19
E-
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