Branch Pipe - LG ARUB230BT2 Installation Manual

3) Setting the Valve Group.
Not control
No.1, 2 Valve
Control
No.2, 3 Valve
Control
No.3, 4 Valve
Control
No.1, 2 Valve
/
No.3, 4 Valve
Control
Note:
If the large capacity indoor units are installed, below Y branch pipe should be used
✽ Y branch pipe
Models
I.D. 22.2(7/8)
ARBLB03320
I.D. 28.58(1-1/8)
DIP S/W setting
Gas Pipe
I.D. 19.05(3/4)
I.D. 15.88(5/8)
I.D. 19.05(3/4)
I.D. 22.2(7/8)
I.D. 9.52(3/8)
I.D. 15.88(5/8)
I.D. 15.88(5/8)
I.D. 12.7(1/2)
O.D. 22.2(7/8)
I.D. 25.4(1)(1/1/8)
Example
Indoor Unit
4
3 Indoor Unit
2
Indoor Unit
1
Indoor Unit
Indoor Unit
4
3
Indoor Unit
2
Large capacity indoor unit
1
Indoor Unit
4
3
Large capacity indoor unit
2
1
Indoor Unit
4 Large capacity indoor unit
3
Indoor Unit
2
1
Indoor Unit
4
Large capacity indoor unit
3
2
Large capacity indoor unit
1
[Unit:mm(inch)]
Liquid pipe
I.D. 12.7(1/2)
I.D. 9.52(3/8)
I.D. 6.35(1/4)
I.D. 9.52(3/8)
Installation Manual 51
HR Unit PCB
I.D. 6.35(1/4)
I.D. 9.52(3/8)
I.D. 6.35(1/4)