V. Installation

3. Connecting the indoor unit 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 copper pipe must be clean & has no dust.

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.

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

Note ◆ If the pipes must be shortened refer to page 19.

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

Spanner

Flare nut

Union

When the indoor unit is above the outdoor unit

 

Indoor unit

Outdoor unit

Oil trap

 

 

(Must be installed every 10m)

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)

V18

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Image 244
Samsung 3759 Connecting the indoor unit refrigerant pipe, There are two refrigerant pipes of differing diameters
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