LG ARUM072BTE5 Installation Manual page 51

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 promote free movement of the pipe within
the sleeve. Use 4"+ curved sheet metal saddles between the bottom surface of the pipe and the bottom surface of the penetration.
Pipe Sleeve Options.
Diameter of penetrations shall be determined by pipe diameter plus the thickness of the insulation.
Underground Refrigerant Piping
Refrigerant pipe installed underground should be routed inside a vapor tight
protective sleeve to prevent insulation deterioration and water infiltration. Re-
frigerant 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 25: Utility Conduit Sizes.
Liquid Pipe
1
1/2 (2.0
2,5
1/4 (1.0) 4
3
3/8 (1-1/8) 4
3
1/2 (1-1/2) 5
4
5/8 (1-5/8) 5
4
3/4 (1-3/4) 5
4
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
REFRIGERANT SYSTEM ENGINEERING
Vapor Pipe
1
) 5/8 (2-1/8 ) 3/4 (2-1/4
2,5
4 4
4 5
5 5
5 5
5 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.
Typical Arrangement of Refrigerant Pipe and Ca-
ble(s) in a Utility Conduit.
)
2,5
Provide expansion joints in long pipe segments and place in an acces-
sible conduit box for inspection. Use galvanized curved sheet metal
saddles at all mounting points. Pipe should be allowed to move freely
linearly.
Vapor Line
Insulation Material
Liquid Line
Pipe Sleeve
Insulation
Material
Min. 18 Gauge
Power/Communication
Cable
51