Cutting/Flaring the Pipes
Outer Diameter Torque
1/4
inch 10.1~12.3 ft.lb
3/8 inch 18.1~20.3 ft.lb
1/2 inch
27.5~30.4 ft.lb
5/8
inch 31.8~34.7 ft.lb
Make sure that you have the required tools available (pipe cutter, reamer,
flaring tool and pipe holder).
1
If you wish to shorten the pipes, cut it with a pipe cutter, taking care to ensure
that the cut edge remains at a 90° angle with the side of the pipe. Refer to the
illustrations below for examples of edges cut correctly and incorrectly.
2
To prevent any gas from leaking out, remove all burrs at the cut edge of the
pipe, using a reamer.
3
Slide a flare nut on to the pipe and modify the flare.
4
Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.
5
Align the pipes and tighten the flare nuts first manually and then with
a torque wrench, applying the following torque.
6
Outer Diameter (D) Depth (A)
1/4
inch
3/8 inch
1/2 inch
5/8 inch
0.05 inch
0.
0
7 inch
0.08
inch
0.0
9 inch
Oblique Rough Burr
Inclined Damaged Surface Cracked Uneven Thickness
CC
CC
AA
AA
UU
UU
TT
TT
II
II
OO
OO
NN
NN
In case of welding the pipe, you must weld with nitrogen
gas blowing.
E-
14
INSTALLING THE
I
NDOOR UNIT
MH***FEEA IM_E_26174 5/11/06 4:23 PM Page 14
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