11
Ins
tallation Pr
oc
edur
e
English
1 way Cassette
Level
vinyl tube
Gauge of dimensions
<Side view>
15 mm
Ceiling
Ceiling
15 mm
4 way Cassette
Indoor unit
Ceiling
Gauge of dimensions
17 mm
20 mm
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 assembly piping.
Unscrew the pinch pipe at the end of each refrigerant
pipe.
1 way Cassette
Liquid side
Gas side
Insulator
4 way Cassette
Liquid side
Gas side
Insulator
NOTE
ŷ
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.
Pipe cutter
Pipe
90°
9
Oblique
Rough
Burr
90
3
To prevent any gas from leaking out, remove all burrs
at the cut edge of the pipe, using a reamer.
4
Slide a flare nut on to the pipe and modify the flare.
Pipe
Flare
D
A
Flare
90° ±2°
R 0.4 to 0.8 mm
D
L
45° ±2°
Outer Diameter (D)
Depth (A)
Flare dimension (L)
Ø6.35 mm
1.3 mm
8.7 to 9.1 mm
Ø9.52 mm
1.8 mm
12.8 to 13.2 mm
Ø12.70 mm
2.0 mm
16.2 to 16.6 mm
Ø15.88 mm
2.2 mm
19.3 to 19.7 mm
Ø19.05 mm
2.2 mm
23.6 to 24.0 mm
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Содержание AC052MN4DKH
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