20
ENGLISH
• When the number of indoor units to be connected to the branch
pipes is less than the number of branch pipes available for
connection then cap pipes should be fitted to the surplus branches.
• Fit branch pipe lie in a horizontal plane.
Pinched pipe
B
Horizontal plane
View from point B in the direction of the arrow
Header
Insulator
(included with kit)
Liquid and gas
pipe joints
Insulator for
field piping
Tape
(field supply)
C
• There is no limitation on the joint mounting configuration.
• If the diameter of the refrigerant piping selected by the procedures
described is different from the size of the joint, the connecting
section should be cut with a pipe cutter.
• Branch pipe should be insulated with the insulator in each kit.
Ⓐ To Outdoor Unit
Ⓑ To Indoor Unit
• The indoor unit having larger
capacity must be installed closer
to Ⓐ than smaller one.
• If the diameter of the refrigerant
piping selected by the
procedures described is
different from the size of the
joint, the connecting section
should be cut with a pipe cutter.
ⓒ Pipe cutter
• When the number of pipes to be
connected is smaller than the
number of header branches,
install a cap to the unconnected
branches.
Y branch
Facing
upwards
Facing
downwards
Within ±3° Within ±3°
Viewed from point A
in direction of arrow
Horizontal
plane
Within +/- 10°
A
Ⓐ To Outdoor Unit
Ⓑ
To Branch Piping or Indoor Unit
• Ensure that the branch pipes are attached horizontally or vertically
(see the diagram below.)
Branch pipe Fitting
• Joints between branch and pipe should be sealed with the tape
included in each kit.
• Any cap pipe should be insulated using the insulator provided with
each kit and then taped as described above.
Insulator
Insulator of field pipe
Tape
Tape
Cap pipe
Insulator for cap pipe
Y branch pipe
Models Gas pipe Liquid pipe
ARBLN
01621
I.D 19.05
O.D 15.88
I.D 12.7
I.D 15.88
I.D 12.7
I.D 15.88
I.D 15.88
I.D 12.7
292
281
74
70
413
404
571
O.D 38.1
490
I.D 6.35
I.D 15.88
394
444
I.D 19.05
379
I.D .22.2
I.D .19.05
I.D .25.4
I.D 12.7
I.D 127.
O.D 9.52
I.D 6.35
I.D 9.52
I.D .9.52
I.D .6.35
I.D 9.52
I.D .6.35
292
281
74
70
1
1
413
404
571
O.D 38.1
490
I.D 6.35
I.D 15.88
394
444
I.D 19.05
379
I.D .22.2
I.D .19.05
I.D .25.4
I.D 12.7
ARBLN
03321
I.D 25.4
390
38
I.D 15.88
I.D 19.05
I.D 12.7
I.D 12.7I.D 19.05I.D 15.88I.D 19.05I.D 22.2
I.D 28.58
O.D 254.
I.D 22.2
O.D 19.05
O.D 19.50
I.D 22.2
I.D 25.4
70 80 110
1
2
3
3
1
2
413413
404
571
O.D 38.1
490
I.D 6.35
I.D 15.88
394
444
I.D 19.05
379
I.D .22.2
I.D .19.05
I.D .25.4
I.D 12.7
I.D 9.52
I.D 9.52
I.D 12.7
I.D 12.7
I.D 12.7
I.D 9.52
I.D 6.35
332
321
74
413
404
571
O.D 38.1
490
I.D 6.35
I.D 6.35I.D 6.35
I.D 15.88
394
444
I.D 19.05
379
I.D .22.2
I.D .19.05
I.D .25.4
I.D 12.7
ARBLN
07121
I.D 28.58
I.D 28.58
I.D 28.58
I.D 22.2
I.D 22.2
O.D 22.2
I.D 19.05
I.D 19.05
I.D 31.8
I.D 31.8
I.D 34.9
O.D 31.8
O.D 19.05
I.D 15.88
I.D 15.88
376
96
120 90 120
I.D 12.7
2
3
1
2
1 3
413
404404
571
O.D 38.1
490
I.D 6.35
I.D 15.88
394
444
I.D 19.05
379
I.D .22.2
I.D .19.05
I.D .25.4
I.D 12.7
O.D 12.7
O.D 12.7
I.D 12.7 I.D 12.7
I.D 19.05
I.D 19.05
I.D 19.05
I.D 9.52
I.D 9.52I.D 6.35
I.D 15.88 I.D 15.88
371
83
110 70
2
3
3 2
413
404
571
O.D 38.1
490
I.D 6.35
I.D 15.I.D 15.88I.D 15.88
394394
444
I.D 19.05
379
I.D .22.2
I.D .19.05
I.D .25.4
I.D 12
I.D 12.7I.D 12.7
ARBLN
14521
70 120
I.D 41.3
I.D 38.1
I.D 34.9
I.D 28.58
I.D 28.58
471
125
120 130
I.D 19.05
I.D 15.88
I.D 12.7
I.D 19.05
I.D 22.2
I.D 41.3
I.D 38.1
I.D 41.3
O.D 34.9
I.D 34.9
I.D 22.2
I.D 34.9
I.D 38.1
O.D 22.2
O.D 15.88
O.D 28.58
90
2
3
3
3
2
2
3
413
404
57
571571
O.D 38.
O.D 38.1O.D 38.1
490
I.D 6.35
I.D 15.88
394
444
I.D 19.05
379
I.D .22.2
I.D .19.05
I.D .25.4
I.D 12.7
416
96
O.D 15.88 I.D 9.52
I.D 12.7
O.D 12.7 I.D 6.35
I.D 9.52
I.D 15.88 I.D 19.05
I.D 22.2
I.D 22.2
I.D 12.7
I.D 15.88
I.D 15.88
I.D 19.05
I.D 22.2
O.D 19.05
80
110 110
2
3
1
2 3 3
413
404
571
O.D 38.1
490
I.D 6.35
I.D 15.88
394
444444
I.D 19.0
I.D 19.05I.D 19.05
379
I.D .22.2
I.D .19.05
I.D .25.4
I.D 12.7
ARBLN
23220
O.D .28.58
I.D .22.2
115
X2
100
O.D 15.88
I.D 12.7
70
O.D .22.2
I.D .15.88
I.D .19.05
120
O.D .38.1
I.D .34.9
O.D .44.48
X2
175
I.D 31.8
I.D 28.58
I.D .53.98
I.D .25.4
I.D .44.48
I.D .44.48
I.D 38.1
I.D 41.3
I.D .44.48
I.D 38.1
I.D 41.3
I.D .53.98
420
134
1
2
3
32 3 3
3 3
2
413
404
571
O.D 38.1
49
490490
I.D 6.35
I.D 15.88
394
444
I.D 19.05
379
I.D .22.2
I.D .19.05
I.D .25.4
I.D 12.7
I.D .12.7I.D .19.05
I.D .15.88
I.D 6.35I.D 12.7
I.D 9.52
X2
110 110
I.D 22.2I.D 25.4
I.D .19.05
I.D .22.2
I.D .25.4
346
96
2
2
3
33
413
404
571
O.D 38.1
490
I.D 6.35
I.D 15.88
394
444
I.D 19.05
37
379379
I.D .
I.D .22.2I.D .22.2
I.D .I.D .19.0.05I.D .19.05
I.D .I.D .25.4I.D .25.4
I.D 12.7
[unit:mm]
• Header should be insulated with the insulator in each kit.
Insulate the header using
the insulation
material attached to the
branch pipe kit
as shown in the figure.