Cutting/Flaring The Pipes - Samsung AC NN4SEC Series User & Installation Manual

Cutting/Flaring the pipes

AA
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 it with a pipe cutter, taking care to ensure that the cut edge remains at a 90° angle
with the side of the pipe. Refer to the illustrations below for examples of edges cut correctly and incorrectly.
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 a flare nut on to the pipe and modify the flare.
Flare
Pipe
5. Check that the flaring is correct, referring to the illustrations below for examples of incorrect flaring.
Outer diameter (D,mm)
Ø 6.35
Ø 9.52
Ø 12.70
Ø 15.88
Ø 19.05
CAUTION
• If the pipes require brazing ensure that OFN (Oxygen Free Nitrogen) is flowing through the
system.
• Nitrogen blowing pressure range is 0.02 ~ 0.05MPa.
Oblique
Outer Diameter (D)
ø6.35 mm
ø9.52 mm
ø12.70 mm
ø15.88 mm
ø19.05 mm
Correct
Connection torque (N•m) Flare dimension (L,mm)
14~18
34~42
49~61
68~82
100~120
Rough
Burr
Depth (A)
1.3 mm
1.8 mm
2.0 mm
2.2 mm
2.2 mm
Inclined Damaged
Surface
8.7~9.1
12.8~13.2
16.2~16.6
19.3~19.7
23.6~24.0
Cracked Uneven
Thickness
Flare shape (mm)
R 0.4~0.8
D
L
English 23