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V. Installation
3. Connecting the indoor unit refrigerant pipe
V
18
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 wrench, a spanner applying the
following torque.
2) Must use insulator which is thick enough to cover the
refrigerant pipe to protect the condensate water on the
outside of pipe falling onto the floor and the efficiency of the
unit will be better.
3) Cut off any excess foam insulation.
4) Be sure that there must be no crack or wave on the bended
area.
5) It would be necessary to double the insulation thickness
(10mm or more) to prevent condensation even on the
insulator when if the installed area is warm and humid.
6) Shape an oil trap as shown in figure. The oil trap must be
formed every level difference of 10m.
Refrigerant oil
Torque wrench
Flare nut
Union
Spanner
Radius
5cm
Oil trap
(suction tube)
Outdoor unit
Indoor unit
Oil trap
(Must be installed every 10m)
Oil trap
(Must be installed every 10m)
Outdoor unit
Indoor unit
When the outdoor unit is above
the indoor unit
When the indoor unit is above
the outdoor unit
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.
◆
If the pipes must be shortened refer to page 19.
NN
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Outer Diameter Torque (kgf•cm)
6.35 mm (1/4") 144~176
9.52 mm (3/8") 333~407
12.70 mm (1/2") 504~616
15.88 mm (5/8") 630~770
19.05 mm (3/4") 990~1210
22.23 mm (7/8") 990~1210
DVM E-D/B(chapter5)-E<03759 3/21/02 7:40 PM Page 18