Cutting or extending the pipe

4. Put a flare nut slightly into the pipe and modify the flare.

 

 

 

 

 

90°±2°

 

Outer Diameter (D)

Depth (A)

Flaring Size (B)

 

 

 

ø6.35 mm

1.3 mm

8.7

- 9.1 mm

07

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5°±

 

 

 

 

 

 

B

 

2°

ø9.52 mm

1.8 mm

12.8

- 13.2 mm

INSTALLATION

 

 

 

 

 

 

 

 

 

 

 

ø12.70 mm

2.0 mm

16.2

- 16.6 mm

 

 

 

R0.4~0.8

ø15.88 mm

2.2 mm

19.3

- 19.7 mm

 

 

 

 

 

 

 

 

Pipe

Flare

 

 

 

 

 

 

 

5. Check if you flared the pipe correctly (see examples of incorrectly flared pipes below).

Correct

Inclined

Damaged

Cracked

Uneven

 

 

Surface

 

Thickness

6.Align the pipes to connect them easily. Tighten the flare nuts first with your hands, and then with a torque wrench, applying the following torque:

 

Flare nut

Outer Diameter

 

Torque

 

 

N•m

kgf•cm

 

 

 

 

 

ø6.35 mm

14~18

140~180

 

 

ø9.52 mm

34~42

350~430

 

 

ø12.70 mm

49~61

500~620

Indoor outlet pipe

Connecting pipe

ø15.88 mm

68~82

690~830

• Excessive torque can be cause of gas leakage. If extending pipe by welding/brazing please ensure nitrogen is used during welding/brazing process. The joint must be accessible and serviceable.

• The holder system is detachable as shown.

Holder system (detachable)

7. For further details on how to connect to the outdoor unit and evacuate the air, refer to page 48~50.

• Tighten the flare nut with torque wrench according to specified method.

If the flare nut is over-tightened, the flare may break and cause refrigerant gas leakage.

English-45

A3050 MG ModelIB&IM_DB68-04542A_HP_EN.indd45

 

 

2014/4/2 9:49:55