INSTALLING THE INDOOR UNIT
Cutting/Extending the Piping
Make sure that you have the required tools available (pipe cutter, reamer,
flaring tool and pipe holder).
1
To prevent any gas from leaking out, remove all burrs at the cut end of the
pipe, using a reamer.
3
Slide a flare nut on to the pipe and modify the flare.
4
Align the pipes to be connected and tighten the flare nuts first manually and
then with a torque wrench, applying the following torque.
6
Check that the flaring is correct, referring to the illustrations below for examples of incorrect
flaring.
5
If you wish to shorten the piping, cut it using a pipe cutter, taking care to
ensure that the cut edge remains at a 90° angle with the side of the pipe,
and referring to the illustrations below for examples of edges cut correctly
and incorrectly.
2
Oblique Rough
Burr
Inclined Damaged Surface Cracked Uneven Thickness
D
A
For further details on how to connect up to the outdoor unit and purge the circuit, refer to
page 23.
7
In case welding the pipe, the gas nitrogen must be blown into the parts.
Outer Diameter (D)
Thickness
Depth (A)
ø6.35 mm 0.8mm 1.3 mm
ø9.52 mm 0.8mm 1.8 mm
ø12.70 mm 0.8mm 2.0 mm
Outer Diameter Thickness Torque (kgf•cm)
ø6.35 mm 0.8mm 140~170
ø9.52 mm 0.8mm 250~280
ø12.70 mm 0.8mm 380~420
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