Branch Pipe Fitting - LG ARUN050LMC0 Installation Manual

Branch pipe Fitting

Y branch
A
• Ensure that the branch pipes are attached horizontally or vertically
(see the diagram below.)
Horizontal
plane
A
Viewed from point A
in direction of arrow
• 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.
Liquid and gas
Insulator
pipe joints
(included with kit)
Header
A
B
C
• 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.
B
• Fit branch pipe lie in a horizontal plane.
Horizontal plane
View from point B in the direction of the arrow
Ⓐ To Branch Piping or Indoor Unit
B
Ⓑ To Outdoor Unit
Facing Facing
downwards upwards
Within +/- 10°
Within ±3° Within ±3°
Tape
(field supply)
Insulator for
field piping
Ⓐ 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
www.lgcomfortcooling.co.uk
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.
Pinched pipe
• Header should be insulated with the insulator in each kit.
• Joints between branch and pipe should be sealed with the tape
included in each kit.
Tape
Insulator
Insulator of field pipe
• Any cap pipe should be insulated using the insulator provided with
each kit and then taped as described above.
Insulator for cap pipe
Cap pipe
Y branch pipe
Gas pipe
Models
[Unit:mm]
I.D12.7
I.D12.7
I.D15.88
a
ARBLN
I.D12.7
01621
281
292
a
O.D15.88
I.D19.05
70
I.D22.2 I.D19.05 I.D15.88 I.D19.05
a
I.D19.05
I.D25.4
I.D15.88
ARBLN
390
413
03321
I.D22.2 I.D28.58 O.D25.4
O.D19.05 O.D19.05
c a b
70 80
Header
Gas pipe
Models
[Unit:mm]
360
120
ID12.7
4 branch
ID12.7
ID15.88
ARBL054
ID15.88
ID19.05
540
7 branch
ID12.7
ID15.88
ARBL057 ID15.88
ID19.05
Insulate the header using
the insulation
material attached to the
branch pipe kit
as shown in the figure.
Tape
[unit:mm]
Liquid pipe
[Unit:mm]
I.D.6.35 I.D9.52
I.D15.88 I.D9.52
a
I.D.6.35
I.D15.88 74
I.D.9.52
281
292
a
O.D9.52
I.D12.7
70
I.D12.7
I.D12.7
b
25.9D.I I.D9.52
83
I.D12.7
I.D12.7
I.D12.7
c I.D9.52 I.D6.35
I.D22.2 321
I.D25.4
332
110
[unit:mm]
Liquid pipe
[Unit:mm]
360
120
ID6.35
ID6.35
ID9.52
150
ID9.52
120
ID15.88 ID12.7 ID9.52
540
120
120
ID12.7
150 ID9.52
120
ID15.88
ID12.7
17
I.D6.35
74
53.6D.I
74
150
120
ID6.35
120 150
ID9.52