Installation
Installation Manual 25
ENGLISH
Cut the pipes and the cable
- Use the accessory piping kit or the pipes pur-
chased locally.
- Measure the distance between the indoor
and the outdoor unit.
-
Cut the pipes a little longer than measured distance.
-
Cut the cable 1.5m longer than the pipe length.
Burrs removal
- Completely remove all burrs from the cut
cross section of pipe/tube.
- Put the end of the copper tube/pipe to down-
ward direction as you remove burrs in order
to avoid to let burrs drop in the tubing.
Flaring work
- Carry out flaring work using flaring tool as
shown right.
Firmly hold copper tube in a bar(or die) as indi-
cated dimension in the table above.
Pipe welding
- Insert and weld the pipe.
- Always make sure to flow Nitrogen at
0.2kgf/cm
2
within the pipe when welding.
-
If the welding is done without flowing Nitrogen,
it can generate a thick oxidized coating within
the pipe to interfere with normal operation of
valve and compressor etc.
Insulation
- Use rubber foamed insulation material
(EPDM, NBR) with high thermal resistance.
- When installed in humid environment, use
thicker insulation material than usual.
- Insert the insulation material within the prod-
uct as deep as possible.
h
The thickness of the above insulation material is
based on thermal conduction rate of 0.036W/m°C.
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