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NOTE
• Be sure to insulate the pipes without gaps or cracks,
and use adhesive between the connecting parts of the
insulation to prevent moisture from entering.
• When bending the pipe, try to secure a large bending radius
(over 100 mm) to prevent the copper pipe from distorting.
• Make sure that the thickness of the insulation does not
get thinner on the pipe's bending area.
• When the insulation thickness becomes thinner, use
extra insulation to maintain thickness.
• When installing the pipe hanger, use extra PE- foam
insulation (over 5 mm) to make the width of the
insulation 3 times wider than the hanger. Do not use
cable ties as a pipe hanger.
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.
High
pressure
pressure
pipe
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.
DB68-09343A-00_IBIM_PAC 미라지 이집트파키스탄_IQ_EN.indd 37
Low
pipe
Step 6 Optional: 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
90°
Oblique
Pipe
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.
D
A
Pipe
Flare
Outer Diameter (D)
Depth (A)
Ø 6.35 mm
1.3 mm
Ø 9.52 mm
1.8 mm
Ø 12.70 mm
2.0 mm
Ø 15.88 mm
2.2 mm
Ø 19.05 mm
2.2 mm
Rough
Burr
R 0.4 to 0.8 mm
D
L
Flare
Flare dimension (L)
8.7 to 9.1 mm
12.8 to 13.2 mm
16.2 to 16.6 mm
19.3 to 19.7 mm
23.6 to 24.0 mm
37
English
2020-07-28 오전 11:08:50
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Table of Contents
Troubleshooting
