LG MULTI V S ARUN060GSS4 Installation Manual page 18

18
Branch pipe Fitting
Y branch
A
• Ensure that the branch pipes are attached horizontally or vertically
(see the diagram below.)
Branch Leg
Straight-through Leg
Y-branch Inlet
Outdoor unit Y-branches can only be installed in a horizontal or vertical
UP configuration.
The vertical DOWN configuration is not permitted.
• 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 sec-
tion 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 connec-
tion then cap pipes should be fitted to the surplus branches.
B
Ⓐ To Branch Piping or Indoor Unit
B
Ⓑ To Outdoor Unit
-3° +3° -3° +3°
Vertical DOWN
Configuration for
Indoor Unit
Y-Branches.
±5°
Horizontal
Plane Vertical UP
Configuration for
±5°
Indoor Unit
Y-Branches.
Outdoor Unit is Permitted. Outdoor Unit is Not Permitted.
Tape
(field supply)
Insulator for
field piping
Ⓐ To Outdoor Unit
Ⓑ To Indoor Unit
• The indoor unit having larger ca-
pacity must be installed closer
to Ⓐ than smaller one.
• If the diameter of the refrigerant
piping selected by the proce-
dures 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, in-
stall a cap to the unconnected
branches.
Pinched pipe
• Fit branch pipe lie in a horizontal plane.
Horizontal plane
View from point B in the direction of the arrow
• Header should be insulated with the insulator in each kit.
• Joints between branch and pipe should be sealed with the tape in-
cluded 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 Insulator for cap pipe
Cap pipe Cap pipe
Y branch pipe
* For more information, refer accessory installation manual.
Models
I.D12.7(1/2)
I.D15.88(5/8)
I.D19.05(3/4)
70(2-3/4)
ARBLN01621
I.D6.35(1/4) I.D9.52(3/8)
1
1
I.D12.7(1/2)
70(2-3/4)
Insulate the header using
the insulation
material attached to the
branch pipe kit
as shown in the figure.
Tape Tape
[Unit: mm(inch)]
Pipe
Gas pipe
I.D12.7(1/2)
I.D15.88(5/8)
74
I.D15.88(5/8)
(2-29/32)
I.D12.7(1/2)
281(11-1/16)
292(11-1/2)
O.D15.88(5/8)
Liquid pipe
I.D6.35(1/4)
I.D9.52(3/8)
74
I.D6.35(1/4)
(2-29/32)
I.D9.52(3/8)
281(11-1/16)
292(11-1/2)
O.D9.52(3/8)