AR30KSFTAWQNSA User Manual

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English-45

INSTALLATION07

Indoor outlet pipe Connecting pipe

Flare nut

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

6. Align the pipes to connect them easily. Tighten the are nuts rst with your hands, and then with a torque wrench,

applying the following torque:

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

Correct

Uneven

Thickness

Cracked

Damaged

Surface

Inclined

• 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.

• Tightenthearenutwithtorquewrenchaccordingtospeciedmethod.

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

4. Put a are nut slightly into the pipe and modify the are.

Outer Diameter (D) Depth (A) Flaring Size (B)

ø6.35 mm 1.3 mm 8.7 - 9.1 mm

ø9.52 mm 1.8 mm 12.8 - 13.2 mm

ø12.70 mm 2.0 mm 16.2 - 16.6 mm

ø15.88 mm 2.2 mm 19.3 - 19.7 mm

Pipe Flare

90°± 2°

±°

R 0.4~0.8

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

ø15.88 mm 68~82 690~830

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User Manual - Page 45