LG ART COOL LAN090HSV5 Installation Manual page 32

INSTALLATION
Table 13: Indoor Unit Pipe Sizes.
Vapor Line
Indoor Unit Capacity
Piping Size (in., OD)
7,000 Btu/h
9,000 Btu/h
12,000 Btu/h
15,000 Btu/h
18,000 Btu/h
24,000 Btu/h
Connection sockets (included as a factory-supplied accessory with the
indoor units) will need to be used when piping the indoor units to the
branch distribution unit. The connection sockets for 36k indoor units are
factory supplied with the branch distribution units. See tables above and below for indoor unit piping connection and connection socket dimensions.
See below and the following page for the connection socket installation procedure.
Table 15: Connection Socket Dimensions.
Indoor Unit Capacity
18,000 Btu/h Wall-Mounted and Vertical Air Handling Units
18,000 Btu/h Low Static Duct and Four-Way Cassette Units
24,000 Btu/h
Installing Field Piping to the Branch Distribution Unit Piping Connections
1. Remove any caps, etc., that will be on the branch distribution unit.
2. Tighten each piping connection individually following the "Tightening the Flare Nuts" procedure earlier in this section.
3. When all piping installation has been completed, perform the triple leak / pressure and evacuation tests (see the Final Installation Proce-
dures Section in the Multi F / Multi F MAX Outdoor Unit Installation Manual), verify that the system does not have any leaks, and then fully
insulate all joints / connections.
Using the Connection Socket
Some indoor units require the use of a connection socket when piping the indoor units to the branch distribution unit. (See previous page and
below for information.) The connection sockets are included as a factory-supplied accessory with the indoor units, or in the case of the 36k
indoor unit, it is factory supplied with the branch distribution units. To install:
1. Remove any caps, etc., that will be on the branch distribution unit.
2. Align the center of the piping sections as seen in the diagram at right.
3. Tighten each piping connection individually following the "Tightening the Flare
Nuts" procedure earlier in this section.
4. When all piping installation has been completed, perform the triple leak / pressure and
evacuation tests (see the Final Installation Procedures Section in the Multi F / Multi
F MAX Outdoor Unit or Multi F / Multi F MAX with LGRED Outdoor Unit Installation Manual), verify that the system does not have any leaks,
and then fully insulate all joints / connections.
Figure 40: Close Up of Branch Distribution to Indoor Unit Piping Connections.
32
Liquid Line
Piping Size (in., OD)
Ø3/8
Ø1/4
Ø1/2
(Branch Distribution Unit: PMBD3640)
(7~24 kBtu/h Indoor Units)
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.
Table 14: Indoor Unit Piping Connections.
Indoor Unit Capacity
7,000 Btu/h
9,000 Btu/h
12,000 Btu/h
15,000 Btu/h
18,000 Btu/h Wall-Mounted and
Vertical Air Handling Units
18,000 Btu/h Low Static Duct
and Four-Way Cassette Units
24,000 Btu/h
Vapor (in., OD) Liquid (in., OD)
A B
Figure 41: Connection Socket Diagram, External View.
To Branch
Distribution
Connection
F
MULTI
F
MULTI
Vapor Line Liquid Line
Conn. (in., OD) Conn. (in., OD)
Ø3/8
Ø5/8
Ø1/2
Ø1/2
A B
N/A
N/A
Connection Socket
(Branch Distribution Unit: PMBD3641)
(Only for 36 kBtu/h Indoor Units
to Connect to "D ROOM")
MAX
Ø1/4
Ø3/8
Ø1/4
Ø1/4
To Flared
End of
Field Piping