Cutting/Flaring The Pipes - Samsung Duct Type Series Installation Manual

Cutting/Flaring the Pipes

1. Make sure that you prepared the required tools. (pipe cutter, reamer, flaring tool and pipe holder)
2. 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 correct and incorrect cut edges below.
Pipe
cutter
Pipe
3. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer.
4. Carry out flaring work using flaring tool as shown below.
Flaring tool
Clutch type Wing nut type
Flare
Pipe
5. Check if you flared the pipe correctly. There are some examples of incorrectly flared pipes below.
Correct Inclined
6. Align the pipes and tighten the flare nuts first manually and then with a torque wrench, applying the following torque.
• In case of needing brazing, you must work with Nitrogen gas blowing.
CAUTION
90° Oblique
Die
Copper pipe
Pipe diameter
[D]
mm inch
6.35 1/4
9.52 3/8
12.7 1/2
15.88 5/8
Damaged Cracked
Surface
Outer diameter (D)
mm inch N•m
6.35 1/4 14~18
9.52 3/8 34~42
12.7 1/2 49~61
15.88 5/8 68~82
19.05 3/4 100~120 73.8~88.5 23.6~24.0 0.93~0.94
Rough
A
Copper pipe
Flare nut
Depth of flaring part [A]
Using flaring tool
for R-410A
Clutch type
mm inch mm
0~0.5 0~0.02 1.0~1.5
0~0.5 0~0.02 1.0~1.5
0~0.5 0~0.02 1.0~1.5
0~0.5 0~0.02 1.0~1.5
Uneven
Thickness
Torque (A) Flare dimension (L)
lbf.ft mm
10.3~13.3 8.7~9.1
25.1~31.0 12.8~13.2 0.50~0.52
36.1~45.0 16.2~16.6 0.64~0.65
50.2~60.5 19.3~19.7 0.76~0.78
Burr
York
Die
Using conventional flaring tool
Wing nut type
inch mm
0.04~0.06 1.5~2.0
0.04~0.06 1.5~2.0
0.04~0.06 1.5~2.0
0.04~0.06 1.5~2.0
Flare shape
mm(inch)
inch
0.34~0.36
(0.016~0.032)
L
inch
0.06~0.08
0.06~0.08
0.06~0.08
0.06~0.08
R 0.4~0.8
D
11