LG ARUB80LT2 Installation Manual page 54

HR Unit PCB
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
ARBLB03320
54 Outdoor Unit
DIP S/W setting
Gas Pipe
I.D. 19.05
I.D. 22.2
I.D. 22.2
I.D. 15.88
I.D. 15.88
O.D. 22.2
I.D. 28.58
I.D. 25.4
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
I.D. 19.05
I.D. 15.88
I.D. 9.52
I.D. 9.52
I.D. 6.35
I.D. 12.7
Example
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
Large capacity indoor unit
Indoor Unit
Large capacity indoor unit
Indoor Unit
Large capacity indoor unit
Indoor Unit
Indoor Unit
Large capacity indoor unit
Large capacity indoor unit
[Unit:mm]
Liquid pipe
I.D. 6.35
I.D. 12.7
I.D. 9.52
I.D. 6.35
I.D. 9.52