LG A2UW146FA0, Service Manual

Page: 84 / 268

84 Multi type Air Conditioner
Installation
Facing upwards
Viewed from point A
in direction of arrow
Horizontal
plane
Gas Pipe
Ø19.05
Ø19.05
Liquid Pipe
/- 10
°
A
Ø9.52
Ø9.52
Ø9.52
Ø19.05
Y branch
A
B
To Outdoor Unit
[unit:mm]
To BD Unit
A
B
Liquid and gas
pipe joints
Insulator
(included with kit)
Insulator for
field piping
Tape
(field supply)
Liquid and gas
pipe joints
2.6 Y-Branch(Standard accessory)
• Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.)
• 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.
2.5 Necessity of a trap
Since there is fear of the oil held inside the riser piping flowing back into the compressor when stopped and caus-
ing liquid compression phenomenon, or cases of deterioration of oil return, it will be necessary to provide a trap at
an appropriate place in the riser gas piping.
In case more then 5m
CAUTIONS
• Capacity is based on standard length and maximum
allowance length is on the basis of reliability.
• Oil trap should be installed every 5~7 meters.