LG MULTI V ARNU363DDA4 Installation Manual page 33

Figure 17: RTU Piping Sizing.
Table 9: Main Pipe (A) Diameters.
ODU Capacity
Ton (kBtu/h)
Liquid pipe (O.D.)
10 (119.7)
1/2 in
12 (144)
14 (168)
5/8 in
16-18 (192-206)
20 (233.1)
22-28 (264-336)
7/8 in
30-42 (360-504)
Table 10: Pipe B/C/D/E between Y-branch and Y-branch / RTU Diameters.
Downstream RTU Capacity (kBtu/h)
≤ 114,700
≤ 172,000
≤ 229,400
≤ 248,500
≤ 344,000
≤ 592,000
Pipe diameter when pipe length is ≥295 feet (ODU ↔ RTU)
Low Pressure pipe (O.D.)
No Increase
Liquid pipe (O.D.)
3/8 in
1/2 in
5/8 in
3/4 in
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.
REFRIGERANT PIPING
High Pressure pipe (O.D.)
No Increase
Low Pressure pipe (O.D.) High Pressure pipe (O.D.)
7/8 in
1-1/8 in
1-3/8 in
1-5/8 in
3/4 in
7/8 in
1-1/8 in
1-3/8 in
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