Samsung AC BNPDBC Series User & Installation Manual page 46

Refrigerant piping work
Direction of the pipe when brazing
• Brazing the pipe should be done with the pipe headed downward or horizontally.
• Avoid brazing with the pipe headed upward.
Cutting or flaring the pipes
1 Make sure that you prepared the required tools.
Pipe cutter, reamer, flaring tool and pipe holder, etc.
2 If you want to shorten the pipe, cut it with a pipe cutter ensuring that the cut edge remains at 90° with
the side of the pipe.
There are some examples of correct and incorrect cut edges below.
3 To prevent a gas leak, remove all burrs at the cut edge of the pipe with a reamer.
4 Carry out flaring work with a flaring tool as shown below.
Flaring tool
Clutch type
46 English
90°
Wing nut type
Outer diameter [D (mm)]
ø 6.35
ø 9.52
ø 12.70
ø 15.88
Rough
Oblique
A
Flaring
bar
Flare nut
Copper pipe
Depth of the flare [A (mm)]
Flare tool
Clutch type
1.0~1.5
1.0~1.5
1.0~1.5
1.0~1.5
Burr
Yoke
Flaring bar
Copper pipe
Wing nut type