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Direction of the pipe when brazing
• Brazing the pipe should be done with the pipe angled
downward or horizontally.
• Avoid brazing with the pipe angled upward.
Cutting the pipes
• Make sure that you prepared the required tools.
– Pipe cutter, reamer, flaring tool and pipe holder, etc.
• If you want to shorten the pipe, cut it using a pipe
cutter ensuring that the cut edge remains at 90° with
the side of the pipe.
– There are some examples of correctly and
incorrectly cut edges below.
Pipe cutter
Pipe
• To prevent a gas leak, remove all burrs at the cut edge
of the pipe using a reamer.
Oblique
Rough
Burr
Step 7 Installing oil traps
Check the following list and install an oil trap.
Install an oil trap whenever the indoor unit is installed at a
higher elevation than the outdoor unit.
• Based on cooling operation, install it on the gas side
pipe only.
• Install an oil trap every 32.8 ft (10 m).
• Radius of curvature (R) on the oil trap are as follows;
Pipe
diameter(D)
(15.88)
Radius of
1.26 (32)
1.50 (32)
curvatur(R)
and over
and over
Outdoor Unit
•
[inch(mm)]
(19.05)
(22.23)
(28.58)
1.61 (41)
2.24 (57)
and over
and over
Indoor Unit
R
Oil trap (Install it at
H
every 32.8 ft (10 m))
English
15
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