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57
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
Pipe Sleeves at Penetrations
40 in40 in
A
B
D
F
G
B
G
D
B
H
I
J
A
E
B
I
A
B
D
C
Inside wall (concealed)
Floor (fire-resistance)
Area between fire-resistant
insulation and boundary wall
Roof pipe shaft
Outside wall
Outside wall (exposed)
Sleeve
Insulation
Lagging
Caulk
Band
Water-resistant layer
Sleeve with edge
Lagging
Mortar or other fire-resistant caulk
Fire-resistant insulation
When filling an access hole with mortar, cover the
area with steel plate so that the insulation will not
fall through. For this area, use fire-resistant
materials for both the insulation and cover. (Vinyl
cover should not be used.)
Pipe Sleeves at Penetrations
LG requires that all pipe penetrations through walls, floors, and pipes buried underground be properly insulated and routed through an
appropriate wall sleeve of sufficient size to prevent compression of refrigerant pipe insulation and free movement of the pipe within the
sleeve. Underground refrigerant pipe shall be routed inside a protective sleeve to prevent insulation deterioration.
All oor and wall penetrations should be properly sized and large enough to accommodate pipe diameter plus insulation thickness.
Figure 72: Pipe Sleeves at Penetrations
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