1.Cut out the appropriate knock-out piece (A, B, C) on the rear of the indoor unit unless you connect the pipe directly from the rear.

2.Smooth the cut edges.

3.Remove the protection caps of the pipes and connect the assembly pipe to each pipe. Tighten the nuts first with your hands, and then with a torque wrench, applying the following torque:

Outer diameter (mm)

Torque (N•m)

Torque (kgf•cm)

ø 6.35

14 to 18

140 to 180

 

 

 

ø 9.52

34 to 42

350 to 430

 

 

 

ø 12.70

49 to 61

500 to 620

 

 

 

ø 15.88

68 to 82

690 to 830

 

 

 

Step 2.9 Shortening or extending the refrigerant pipes (assembly pipe)

 

 

Pipe cutter

 

 

 

Pipe

 

90°

Oblique

Rough

Burr

NOTE

•If you want to shorten or extend the pipes, see Step 2.9 Shortening or extending the refrigerant pipes (assembly pipe) on page 37.

4.Cut off the remaining foam insulation.

5.If necessary, bend the pipe to fit along the bottom of the indoor unit. Then pull it out through the appropriate hole.

•The pipe should not project from the rear of the indoor unit.

•The bending radius should be 100 mm or more.

6.Pass the pipe through the hole in the wall.

NOTE

•The pipe will be insulated and fixed permanently into position after finishing the installation and the gas leak test. For further details. see Step 4.1 Performing the gas leak tests on page 43.

CAUTION

•Tighten the flare nut with a torque wrench according to specified method. If the flare nut is over- tightened, the flare may break and cause refrigerant gas leakage.

•Do not box in or cover the pipe connection. All refrigerant pipe connection must be easily accessible and serviceable.

D

 

 

90°±2°

 

 

 

 

 

A

45°±2°

 

 

 

 

 

 

L

 

 

 

R 0.4 to 0.8

Pipe

Flare

D

 

 

 

 

 

 

(Unit: mm)

Outer diameter (D)

 

Depth (A)

Flare dimension (L)

ø 6.35

 

1.3

8.7 to 9.1

ø 9.52

 

1.8

12.8 to 13.2

ø 12.70

 

2.0

16.2 to 16.6

ø 15.88

 

2.2

19.3 to 19.7

 

 

 

Flare nut

Indoor outlet pipe

 

 

Connecting pipe

Outer diameter (mm)

Torque (N•m)

Torque (kgf•cm)

ø 6.35

 

14 to 18

140 to 180

ø 9.52

 

34 to 42

350 to 430

ø 12.70

 

49 to 61

500 to 620

ø 15.88

 

68 to 82

690 to 830

English 37

Installation

DB68-06031A-01_A5.indd 37

4/18/2017 8:59:59 AM

Page 37 Page 39
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Samsung AR18KPFNDWKNSG, AR24KPFNDWKNSG, AR18KPFNDWKXSG manual Shortening or extending the refrigerant pipes assembly pipe
Page 37 Page 39

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