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English-50
Cutting or extending the pipe
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 53~55.
Correct
Uneven
Thickness
Cracked
Damaged
Surface
Inclined
• Excessivetorquecanbecauseofgasleakage.Ifextendingpipebywelding/brazingpleaseensurenitrogenisused
during welding/brazing process. The joint must be accessible and serviceable.
• Tightenthearenutwithtorquewrenchaccordingtospeciedmethod.
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°
°
2
±°
5
4
R 0.4~0.8
B
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
1. Make sure that you have all the required tools (pipe cutter, reamer, aring tool and pipe holder).
2. If you want to shorten the pipe, cut it using a pipe cutter, ensuring that the cut edge remains at 90° with the side of the
pipe (see below examples of correct and incorrect cut edges).
3. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer.
Oblique Rough Burr
Pipe
cutter
Pipe
• Facethepipedownwhileremovingtheburrstomakesurethatburrsdonotgetintothepipe.
A3050 Australia_IB&IM_DB68-05206A_EN.indd 50 2014/12/29 19:07:41
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