Samsung AR7000 - Flare Nut Installation and Modification; Checking Flare Pipe Correctness; Connecting Pipes and Torque Wrench Usage

Indoor outlet pipe Connecting pipe
Flare nut
5. Check if you ared the pipe correctly (see examples of incorrectly ared pipes below).
6. Align the pipes to connect them easily. Tighten the are nuts rst with your hands, and then with a torque wrench,
applying the following torque:
7. For further details on how to connect to the outdoor unit and evacuate the air, refer to page 49~51.
Correct
Uneven
Thickness
Cracked
Damaged
Surface
Inclined
t &YDFTTJWFUPSRVFDBOCFDBVTFPGHBTMFBLBHF*GFYUFOEJOHQJQFCZXFMEJOHCSB[JOHQMFBTFFOTVSFOJUSPHFOJTVTFE
during welding/brazing process. The joint must be accessible and serviceable.
t 5JHIUFOUIFøBSFOVUXJUIUPSRVFXSFODIBDDPSEJOHUPTQFDJöFENFUIPE
If the are nut is over-tightened, the are may break and cause refrigerant gas leakage.
4. Put a are nut slightly into the pipe and modify the are.
Outer Diameter (D) Depth (A) Flaring Size (B)
ø1/4inch
(6.35mm)
0.051inch
(1.3mm)
0.3425 - 0.3583 inch
(8.7 - 9.1 mm)
ø3/8inch
(9.52mm)
0.071inch
(1.8mm)
0.5039 - 0.5197 inch
(12.8 - 13.2 mm)
ø1/2inch
(12.70mm)
0.079inch
(2.0mm)
0.6378 - 0.6535 inch
(16.2 - 16.6 mm)
ø5/8inch
(15.88mm)
0.087inch
(2.2mm)
0.7598 - 0.7756 inch
(19.3 - 19.7 mm)
Pipe Flare
90°± 2°
e
2
±e
5
4
R 0.4~0.8
B
Outer
Diameter
Torque
/tN fUtMCLHGtDN
ø1/4 inch (ø6.35mm)
14~18
10.1~13.0 (140~180)
ø3/8 inch (ø9.52mm)
34~42 25.3~31.1 (350~430)
ø1/2 inch (ø12.70 mm)
49~61 36.2~44.8 (500~620)
ø5/8 inch (ø15.88mm)
68~82 49.9~60.0 (690~830)
Cutting or extending the pipe
English-46
AR7000 CV HP_IB&IM_DB68-05637A-00_EN.indd 46 2015/10/12 15:43:18