30
If you need a pipe longer than 5 meters:
•
•
•
You must extend the assembly cable.
• You must add refrigerant to the pipes; otherwise, the indoor unit may freeze.
Cutting or extending the pipe
A 5-meter pipe is supplied with the air conditioner (optional).
The length of the pipe can be:
Extended up to : See table page 24
Shortened up to : See table page 24
1
Make sure that you have 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 examples of correctly and
incorrectly cut edges below).
Oblique Rough Burr
3
To prevent a gas leak, remove all burrs at the cut edge of the pipe using a
reamer.
4
Put a are nut slightly into the pipe and modify the are.
Outer Diameter (D)
Depth (A)
ø6.35 mm 1.3 mm
ø9.52 mm 1.8 mm
ø12.70 mm 2.0 mm
ø15.88 mm 2.2 mm
5
Check if you ared the pipe correctly (see examples of incorrectly ared pipes
below).
Uneven
Thickness
CrackedDamaged
Surface
Inclined
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:
Outer Diameter Torque (kgf•cm)
ø6.35 mm 140~170
ø9.52 mm 250~280
ø12.70 mm 380~420
ø15.88 mm 440~480
7
For further details on how to connect to the outdoor unit and purge the air,
refer to page 35.
Pipe cutter
Pipe
Pipe Flare
Indoor outlet pipe Connecting pipe
Flare nut
• Tighten the nut with torque wrench according to method.
• Excessive torque can be cause of gas leakage.
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