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Installation Procedure
When the installation template is made of plastic
Slim one-way, small type (WindFree panel)
0.24(6)
Clamping jig
Slim one-way, medium/large type (WindFree panel)
WindFree medium/
large type (outlet)
0.39(10)
Clamping jig
Step 5 Purging inert gas from the
indoor unit
The indoor unit comes with nitrogen gas (inert gas)
charged at the factory. Therefore, all inert gas must be
purged before connecting the refrigerant pipes.
Unscrew the pinch pipe at the end of each refrigerant pipe.
Insulator
NOTE
• To prevent dirt or foreign objects from getting into the
pipes during installation, do not remove the pinch pipe
completely until you are ready to connect the piping.
Step 6 Cutting and flaring the pipes
1 Make sure that you have the required tools available:
pipe cutter, reamer, flaring tool, and pipe holder.
2 If you wish to shorten the pipes, cut them with a pipe
cutter, ensuring that the cut edge remains at a 90° angle
to the side of the pipe. Refer to the illustrations below
for examples of edges cut correctly and incorrectly.
12
English
Unit : inch(mm)
WindFree small type
(inlet)
Indoor unit
0.32(8.03)
WindFree medium/
large type (inlet)
Indoor unit
0.39(10)
Liquid side
Gas side
Pipe cutter
Pipe
3 To prevent any gas from leaking out, remove all burrs
at the cut edge of the pipe, using a reamer.
4 Slide the flare nuts onto the pipes, then flare each
pipe.
D
A
Flare
Pipe
Outer Diameter (D)
Depth (A)
mm
inch
mm
inch
Ø6.35
1/4
1.3
0.051
Ø9.52
3/8
1.8
0.071
Ø12.70
1/2
2.0
0.079
Ø15.88
5/8
2.2
0.087
Ø19.05
3/4
2.2
0.087
5 Check that the flaring is correct, referring to the
illustrations below for examples of incorrect flaring.
Damaged
Inclined
Correct
Surface
Oblique
Rough
Burr
R 0.4 to 0.8 mm
(0.016 to 0.032 inch)
D
L
Flare
Flare dimension (L)
mm
inch
8.7 to 9.1
0.34 to 0.36
12.8 to 13.2
0.50 to 0.52
16.2 to 16.6
0.64 to 0.65
19.3 to 19.7
0.76 to 0.78
23.6 to 24.0
0.93 to 0.94
Cracked
Uneven
Thickness
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