Samsung AR5000 - Page 41

1. Make sure that you have all the required tools (pipe cutter, reamer, aring 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 (see below examples of correct and incorrect cut edges).
Oblique Rough Burr
Pipe
cutter
Pipe
3. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer.
• Facethepipedownwhileremovingtheburrstomakesurethatburrsdonotgetintothepipe.
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 44~46.
Correct
Uneven
Thickness
Cracked
Damaged
Surface
Inclined
• Excessivetorquecanbecauseofgasleakage.Ifextendingpipebywelding/brazingpleaseensurenitrogenisused
during welding/brazing process. The joint must be accessible and serviceable.
• Tightenthearenutwithtorquewrenchaccordingtospeciedmethod.
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)
ø6.35 mm 1.3 mm 8.7 - 9.1 mm
ø9.52 mm 1.8 mm 12.8 - 13.2 mm
ø12.70 mm 2.0 mm 16.2 - 16.6 mm
ø15.88 mm 2.2 mm 19.3 - 19.7 mm
Pipe Flare
90°± 2°
°
2
±°
5
4
R 0.4~0.8
B
Outer Diameter
Torque
N•m kgf•cm
ø6.35 mm 14~18 140~180
ø9.52 mm 34~42 350~430
ø12.70 mm 49~61 500~620
ø15.88 mm 68~82 690~830
English-41
INSTALLATION05
A3050 CB&XL&CH_IB&IM_DB68-04138A_HP&CO_EN.indd 41 2013-12-28 14:43:47