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Purging the indoor unit
1. Unscrew the caps at the end of each pipe.
All inert gas exhausts from the indoor unit.
1.
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.
4.
The indoor unit is supplied with inert gas (nitrogen).
If this one isn’t true, DO NOT INSTALL THE UNIT since leakage could be inside the indoor unit.
A 5-meter pipe is supplied with the air conditioner (optional NOT FOR ITALY).
The length of the pipe can be:
• Extended up to : see table page 23
• Shorten up to: see page 23
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.
Unscrew the capsPipes
Oblique Rough Burr
Pipe
cutter
Pipe
• The remaining air in the Refrigeration cycle, which contains moisture,
may cause malfunction on the compressor.
• Always contact the service center or a professional installation agency
for product installation.
• To prevent dirt or foreign substances from getting into the pipes during
installation, do NOT remove the caps completely until you are ready to
connect the pipes.
Cutting or extending the pipe
Outer Diameter (D) Depth (A) Flaring Size (B)
ø6.35 mm 1.3 mm 9.0 mm
ø9.52 mm 1.8 mm 13.0 mm
ø12.70 mm 2.0 mm 16.2 mm
ø15.88 mm 2.2 mm 19.3 mm
Pipe Flare
• Face the pipe down while removing the burrs to make sure that burrs do not get in to the pipe.
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