E-
17
ENGLISH
I
NSTALLING THE
I
NDOOR
U
NIT
Cutting/Flaring the Pipes
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)
6.35 mm (1/4")
1.3mm
9.52 mm (3/8")
1.8mm
12.70 mm (1/2")
2.0mm
15.88 mm (5/8")
2.2mm
19.05 mm (3/4")
2.2mm
22.23 mm (7/8")
2.2mm
Oblique
Rough
Burr
Inclined
Damaged Surface
Cracked
Uneven Thickness
1/4"
3/8"
1/2"
5/8"
3/4"
Valve
17
22
26
29
36
18
42
55
65
100
Flare nut
Wrench (mm) N•m
23
23
29
29
38
20
20
40
40
40
Valve cap
Wrench (mm) N•m
18
18
18
18
18
16~18
16~18
16~18
16~18
16~18
Pressure port cap
Wrench (mm)
N•m
Allen (hex.) 5
Allen (hex.) 5
Allen (hex.) 5
Allen (hex.) 5
Allen (hex.) 5
9
9
13
13
13
Valve needle
Wrench (mm)
N•m
-
-
-
-
-
0.34
0.34
0.34
0.34
0.34
Pressure port
Wrench (mm) N•m
In case of welding the pipe, you must weld with nitrogen gas blowing.
C
C
C
C
A
A
A
A
U
U
U
U
T
T
T
T
II
II
O
O
O
O
N
N
N
N
MH***FKEA IM_E_27682_4 5/25/04 3:28 AM Page 17
