LG LCN097HV4 Installation Manual page 30

GENERAL INSTALLATION GUIDELINES
Refrigerant Piping
Pipe Sleeves at Penetrations
LG requires that all pipe penetrations through walls, floors, and
pipes buried underground be routed through a properly insulated
sleeve that is sufficiently sized to provide free movement of the pipe
and does not compress the insulation. Route underground refriger-
ant pipe inside a protective sleeve to prevent insulation deteriora-
tion. Follow federal, state, and local regulations and codes when
choosing a sleeve type.
Figure 36: Pipe Sleeve Options.
Inside wall (concealed)
C
A
B
Floor (fire-resistance)
D
F
G
B
Underground Refrigerant Piping
Route refrigerant pipe installed underground inside a vapor tight pro-
tective sleeve to prevent insulation deterioration and water infiltra-
tion. Refrigerant pipe installed inside underground casing must be
continuous without any joints. Underground refrigerant pipe must be
located at a level below the frost line.
Table 20: Utility Conduit Sizes.
Liquid
Pipe
1
3/8 (1-1/8 ) 1/2 (2.0
2,3
1/4 (1.0) 4
3
3/8 (1-1/8)
4
3
OD pipe diameter in inches; Values in parenthesis () indicate OD of pipe with insulation
1
jacket.
Diameter of pipe with insulation. Thickness of pipe insulation is typical. Actual required
2
thickness may vary based on surrounding ambient conditions and should be calculated
and specified by the design engineer.
Insulation thickness (value in parenthesis) = 3/8 inch.
3
Insulation thickness (value in parenthesis) = 1 inch.
4
Insulation thickness (value in parenthesis) = 3/4 inch.
5
30
Outside wall Outside wall (exposed)
D
B
A
Area between fire-resistant
Roof pipe shaft insulation and boundary wall
I
G
D
B
H
Vapor Pipe
1
) 5/8 (2-1/8 ) 3/4 (2-1/4
2,5 2,5
4 4 4
4 4 5
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.
Note:
Pipe diameter plus insulation thickness determines wall
penetration diameter.
For example:
Diameter of Gas Piping:
Diameter of Liquid Piping:
Thickness of Gas Piping Insulation:
Thickness of Liquid Piping Insulation:
Surplus:
Sleeve diameter (total):
Sleeve
Insulation
E
Lagging
B
Caulk
Band
Water-resistant layer
I
Sleeve with edge
Lagging
Mortar or other fire-resistant caulk
Fire-resistant insulation
J
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
A materials for both the insulation and cover. (Vinyl
cover should not be used.)
40 in 40 in
Figure 37: Typical Arrangement of Refrigerant Pipe
and Cable(s) in a Utility Conduit.
)
2,5
Figure 38: Underground Refrigerant Piping.
F
MULTI
F
MULTI MAX
1/2"
1/4"
0.4" x 2
0.4" x 2
0.8"
3.1" minimum
Vapor Line
Insulation Material
Liquid Line
Pipe Sleeve
Insulation
Material
Min. 18 Gauge
Power/Communication
Cable