Samsung AM***MNVD Series Installation Manual page 12

Cutting or extending the pipe
1. Make sure that you have all 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 (see below examples of correct and incorrect cut edges).
Pipe
cutter
Pipe
3. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer.
CAUTION
4. Put a flare nut slightly into the pipe and modify the flare.
Pipe Flare
5. Check if you flared the pipe correctly (see examples of incorrectly flared pipes below).
Correct
6. Align the pipes to connect them easily. Tighten the flare nuts first with your hands, and then with a torque wrench,
applying the following torque:
Indoor outlet pipe
during welding/brazing process. The joint must be accessible and serviceable.
7. For further details on how to connect to the outdoor unit and evacuate the air, refer to page 11 .
CAUTION
Oblique
90°± 2°
B
R 0.4~0.8
Damaged
Inclined
Surface
Flare nut
Connecting pipe
Rough
Outer diameter (D)
ø 1/4" (6.35)
ø 3/8" (9.52)
ø 1/2" (12.70)
ø 5/8" (15.88)
Outer diameter
[inch (mm)]
ø 1/4" (6.35) 10.3 to 13.3 (14 to 18)
ø 3/8" (9.52) 25.1 to 31.0 (34 to 42)
ø 1/2" (12.70) 36.1 to 45.0 (49 to 61)
ø 5/8" (15.88) 50.2 to 60.5 (68 to 82)
English-12
Depth (A)
0.051 (1.3) 0.34 to 0.36 (8.7 to 9.1)
0.071 (1.8) 0.50 to 0.52 (12.8 to 13.2)
0.079 (2.0) 0.64 to 0.65 (16.2 to 16.6)
0.087 (2.2) 0.76 to 0.78 (19.3 to 19.7)
Uneven
Torque
140 to 180
350 to 430
500 to 620
690 to 830
Unit: inch (mm)