Cutting/Flaring The Pipes - Samsung ND220HHXCE User & 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 correctly and incorrectly cut edges below.
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
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
Big Duct_IBIM_E_33766-3.indd 21
Oblique
Die
Wing nut type
Copper pipe
Outer diameter D
Flare tool for R410A
[inch(mm)]
1/4(6.35)
3/8(9.52)
1/2(12.70)
5/8(15.88)
Damaged Cracked
Surface
Outer diameter
Connection Torque
[ft•lb(kgf•cm)]
[inch(mm)]
1/4(6.35) 10.46~12.63 (145~175)
3/8(9.52) 24.02~29.36 (333~407)
1/2(12.70) 36.43~44.37 (505~615)
5/8(15.88)
45.45~55.48 (630~769)
Rough
A
York
Die
Copper pipe
Flare nut
A [inch(mm)]
clutch type
Clutch type
0~0.020(0~0.5) 0.039~0.059(1.0~1.5)
0~0.020(0~0.5) 0.039~0.059(1.0~1.5)
0~0.020(0~0.5) 0.039~0.059(1.0~1.5)
0~0.020(0~0.5) 0.039~0.059(1.0~1.5)
Uneven
Thickness
Flare dimension
[inch(mm)]
0.34~0.36
(8.70~9.10)
0.50~0.52
(12.80~13.20)
0.64~0.65
(16.20~16.60)
0.76~0.78
(19.30~19.70)
Burr
Conventional flare tool
Wing nut type
0.059~0.079(1.5~2.0)
0.059~0.079(1.5~2.0)
0.059~0.079(1.5~2.0)
0.059~0.079(1.5~2.0)
Flare shape [inch(mm)]
R 0.016~0.031
(0.4~0.8)
2012-01-13 오후 9:40:28
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