LG MULTIV III Service Manual page 23

4) 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
Low Pressure Gas Pipe
Models
I.D22.2(7/8)
I.D25.4(1) I.D19.05(3/4)
1
ARBLB03321
I.D22.2(7/8)
O.D19.05(3/4)
3
70(2-3/4)
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Dip switch setting
I.D19.05(3/4)
I.D15.88(5/8)
I.D12.7(1/2)
2
I.D9.52(3/8)
I.D12.7
83
I.D19.05(3/4)
(1/2)
I.D15.88(5/8) (3-9/32)
I.D12.7(1/2)
390(15-11/32)
3
413(16-1/4)
I.D22.2(7/8)
I.D28.58(1-1/8)
O.D25.4(1) O.D19.05(3/4)
I.D25.4(1)
1 2
80(3-5/32)
110(4-11/32)
Liquid pipe
I.D12.7(1/2)
I.D9.52(3/8)
I.D6.35(1/4)
I.D12.7(1/2)
74
I.D9.52(3/8)
I.D6.35(1/4)
(2-29/32)
321(12-5/8)
332(13-1/16)
- 23 -
HR Unit PCB
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)]
High Pressure Gas Pipe
I.D19.05(3/4)
I.D19.05(3/4)
I.D22.2(7/8) I.D22.2(7/8)
I.D15.88(5/8)
I.D19.05(3/4)
I.D22.2(7/8)
I.D25.4(1)
421(16-9/16)
444(17-15/32)
O.D15.88(5/8)
I.D12.7(1/2)
I.D12.7(1/2)
O.D15.88(5/8)
I.D9.52(3/8)
3 2
70(2-3/4)
110(4-11/32)
LGE Internal Use Only
2
96
I.D15.88
(3-25/32)
(5/8)
3