LG Multi V PRHR042A Installation Manual page 17

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.
h Y branch pipe
Models Low Pressure Gas Pipe
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)
DIP S/W setting
I.D19.05(3/4)
I.D15.88(5/8)
I.D12.7(1/2)
2 I.D9.52(3/8)
I.D19.05(3/4) 83
I.D12.7
(1/2) (3-9/32)
I.D15.88(5/8)
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)
Example
Indoor Unit
4
Indoor Unit
3
2 Indoor Unit
1
Indoor Unit
Indoor Unit
4
Indoor Unit
3
2
Large capacity indoor unit
1
Indoor Unit
4
3 Large capacity indoor unit
2
Indoor Unit
1
Large capacity indoor unit
4
3
Indoor Unit
2
Indoor Unit
1
Large capacity indoor unit
4
3
Large capacity indoor unit
2
1
Liquid pipe High Pressure Gas Pipe
I.D19.05(3/4)
I.D12.7(1/2)
I.D9.52(3/8)
I.D6.35(1/4)
I.D12.7(1/2)
I.D6.35 74
I.D9.52(3/8)
(1/4) (2-29/32)
321(12-5/8)
332(13-1/16)
O.D15.88(5/8)
3
INSTALLATION
17
[Unit : mm(inch)]
I.D19.05(3/4)
I.D22.2(7/8)
I.D22.2(7/8)
I.D15.88(5/8)
2
96
I.D19.05(3/4)
I.D15.88
I.D25.4(1)
(3-25/32)
I.D22.2(7/8)
(5/8)
421(16-9/16)
3
444(17-15/32)
O.D15.88(5/8)
I.D12.7(1/2)
I.D12.7(1/2)
I.D9.52(3/8)
2
70(2-3/4)
110(4-11/32)