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Cutting/Flaring the Pipes
Connect the pipe within 30m(100ft) and cutting pieces will not be gone
into the pipe as being clean to pipe section.
Make sure that you have the required tools available (pipe cutter, reamer,
flaring tool and pipe holder).
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.
1
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.
Outer Diameter(D) Depth (A)
6.35 mm (1/4") 1.3 mm(5/100")
15.88 mm (5/8") 2.2 mm(9/100")
4
Align the pipes and tighten the flare nuts first manually and then with
a wrench, applying the following torque.
Outer Diameter Torque(kgf•cm)
6.35 mm (1/4") 160(11 ft•lb)
15.88 mm (5/8") 400(29 ft•lb)
6
For further details on how to connect up to the outdoor unit and purge
the circuit, refer to page 49.
7
Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.
5
90
O
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-
45
ENGLISH
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