33
Refrigerant Piping Connections
Due to our policy of continuous product innovation, some specifications may change without notification.  
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
REFRIGERANT PIPING CONNECTIONS
Installation Overview
Figure 34: Installation and Piping Connection Overview.
Installation
Single Zone Wall-Mounted systems are one-to-one 
systems. There is a direct piping connection between 
the outdoor unit and the indoor unit. The figure at right 
illustrates the basic pipe connections between the 
outdoor and indoor unit. Refer to the illustration when 
proceeding with pipe connections. 
The illustration shows the indoor unit being installed at 
a higher position than the outdoor unit. However, if the 
outdoor unit be installed at a higher position than the 
indoor unit, the basic pipe connections are the same.
Refer to the “Connection Limitations” section for spe-
cific length limitations in conjunction with outdoor unit 
and indoor unit positioning.
• When proceeding with piping connections, adhere to 
pipe support spacing lengths as shown in the General 
Refrigerant Piping System Information section. Refer 
to the “Pipe Supports” section for information on using 
clamps and pipe support materials.
• Always adhere to local codes regarding piping and ac-
curate support spacing along the piping system.
• Always include insulation on all refrigerant and drain 
piping to ensure condensate does not form and cause 
damage to walls, floors, etc.
Connecting Cable
Vinyl tape (Wide)
Saddle
Gas Piping       
Liquid Piping       
Additional Drain Pipe
Vinyl Tape (Narrow)
Drain Hose
Installation Plate
Sleeve
Bushing-Sleeve
Sealant
• Install after drainage test.
• For the drainage test,
  remove the air filters and
  pour water into the heat 
  exchanger.
Bend the pipe as closely 
to the wall as possible, 
but be careful not to break it. 
Additional field-provided accessories / 
parts / tools that are needed for 
installation.
Air Intake Vents
Air Outlet Vents
Base Plate
Front Grille 
On/Off Button
Signal Receiver 
Display
Air Deflector
(Vertical Louver & Horizontal Vane)
Air Outlet 
Air Filter