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MULTI V IV System Installation Manual
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.
HEAT PUMP ACCESSORIES
Y-branches (for indoor unit connection)
Table 9: Heat Pump Accessories.
Required Accessories Model No.
Y-branches
(for indoor unit connection)
ARBLN01621 ARBLN07121
ARBLN03321 ARBLN14521
Headers
(for indoor unit connection)
Four (4) branch Seven (7) branch Ten (10) branch
ARBL054 ARBL057 ARBL1010
ARBL104 ARBL107 ARBL2010
Multi-frame Connectors
(for outdoor unit connection)
Use to Combine Two Frame Use to Combine Three Frames
ARCNN21
ARCNN21
ARCNN31
Models Vapor pipe Liquid pipe
Unit: Inch
ARBLN03321
ARBLN07121
ARBLN14521
ARBLN01621
16-1/4
15-3/8
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
11-1/2
11-1/16
2-15/16
2-3/4
2-3/4
2-3/4
I.D. 3/4
O.D. 5/8
I.D. 1/2
I.D. 5/8
I.D. 5/8
I.D. 5/8
I.D. 1/2
I.D. 1/2
11-1/2
11-1/16
2-15/16
2-3/4
I.D. 5/8
I.D. 5/8
I.D. 1
I.D. 1
O.D. 1
3-3/16
4-3/8
18-9/16
20-3/8
4-15/16
3-5/16
5-1/8
I.D. 5/8
I.D. 1-5/8
I.D. 1-5/8
I.D. 1-5/8
I.D. 1-1/2
I.D. 1-1/2
I.D. 1-1/2
O.D. 1-1/2
O.D. 5/8
2
2
3
3
2
2
3
3
3
3
14-13/16
15-15/16
-3/44-4-3/4
4-3/4
4-3/4
3-9/16
3-9/16
I.D. 5/8
I.D. 5/8
2
3
2
31
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
O.D. 3/4
O.D. 3/4
O.D. 3/4
12
3-13/16
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
O.D. 7/8
O.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 1/4
I.D. 1/4
I.D. 1/4
1
1
I.D. 1-3/8
I.D. 1-3/8
I.D. 1-3/8
I.D. 1-3/8
O.D. 1-3/8
I.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/8
O.D. 1-1/8
I.D. 1-1/8
O.D. 1-1/4
I.D. 1-1/4
I.D. 1-1/4
I.D. 3/8
I.D. 3/8
I.D. 3/8
O.D. 3/8
1
I.D. 1/2
I.D. 1/2
I.D. 1/2
13-1/16
12-5/8
I.D. 1/4
I.D. 1/4
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 5/8
I.D. 5/8
I.D. 5/8
I.D. 1/2
I.D. 1/2
I.D. 1/2
O.D. 1/2
O.D. 1/2
2-3/4
4-3/8
14-5/8
15-1/2
3-5/16
2
3
3
I.D. 3/4
I.D. 3/4
I.D. 3/4
2
I.D. 1/4
I.D. 3/8
I.D. 3/8
I.D. 1/2
O.D. 1/2
I.D.
1/2
4-3/84-3/8
16-3/8
17-1/2
O.D. 5/8
I.D. 5/8
I.D. 3/4
I.D. 5/8
I.D. 5/8
I.D. 3/4
I.D. 3/4
O.D. 3/4
3-3/16
2
3
1
2 33
3-13/16
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 1/4
I.D. 3/8
I.D. 3/8
2-15/16