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
Outer Diameter (D) Depth(A)
6.53mm 1.3mm
9.52 mm 1.8 mm
12.70 mm 2.0 mm
Slide a flare nut on to the pipe and modify the flare.
4
Outer Diameter Torque (kgf•cm)
6.35 mm 140~170
9.52 mm 250~280
12.70 mm 380~420
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.
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