Underground Piping - LG ART COOL LA090HSV4 Installation Manual

Underground Refrigerant Piping
Refrigerant pipe installed underground should be routed inside a
vapor tight protective sleeve to prevent insulation deterioration and
water infiltration. 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 12: Utility Conduit Sizes.
Liquid Pipe
1
3/8 (1-1/8
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 jacket.
1
Diameter of pipe with insulation. Thickness of pipe insulation is typical. Actual required thickness may
2
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
GENERAL INSTALLATION GUIDELINES
Vapor Pipe
1
) 1/2 (2.0 ) 5/8 (2-1/8
2,3 2,4
4 4
4 4
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.
Figure 28: Typical Arrangement of Refrigerant Pipe and Cable(s) in a
Utility Conduit.
)
2,4
Table 13: Art Cool Mirror Outdoor Unit Refrigerant Pipe Connections
(All Brazed Type)
Model
LSU090HSV4, LSU120HSV4
LSU180HSV4

Underground Piping

Vapor Line
Insulation Material
Liquid Line
Pipe Sleeve
Insulation
Material
Min. 18 Gauge
Power/Communication
Cable
Liquid Conn. Vapor Conn.
(inches) (inches)
1/4 3/8
3/8 5/8
25