Refrigerant Piping Connections; Installation Overview - LG LQ090HV Installation Manual

Installation
Single Zone 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
specific 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
accurate 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.

REFRIGERANT PIPING CONNECTIONS

Due to our policy of continuous product innovation, some specifications may change without notification.
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Figure 29: Installation and Piping Connection Overview.
(5)
(3)
Saddle
(2)

Installation Overview

(6)
(1)
Sleeve
Bushing-Sleeve
Putty(Gum Type Sealant)
Bend the pipe as closely
on the wall as possible,
but be careful that it
doesn't break.
Vinyl tape (Wide)
• Apply after carrying out a
drainage test.
• To carry out the drainage
test, remove the air filters
and pour water into the heat
exchanger.
Gas side piping Optional Parts
Liquid side piping Optional Parts
Additional drain pipe
Vinyl tape (Narrow)
Drain Hose(1)
Connecting cable
(Optional Parts)
33