LG MULTI V S ARUB060GSS4 Installation Manual page 24

24
3) Selection of the model of the HR unit
2
1
(For 2 branches) (For 3 branches)
PRHR022(A)
Initial
Setting
1 branches
Connected
2 branches
Connected
3 branches
Connected
4 branches
Connected
* Each model is shipped with the switches No.2 and No.3 pre-adjusted
as above in the factory.
CAUTION
!
• If you want to use a PRHR032(A) for 2 branches HR unit after closing
the 3rd pipes, set the DIP switch for 2 branches HR unit.
• If you want to use a PRHR042(A) for 3 branches HR unit after closing
the 4th pipes, set the DIP switch for 3 branches HR unit.
• If you want to use a PRHR042(A) for 2 branches HR unit after closing
the 3rd and 4th pipes, set the DIP switch for 2 branches HR unit.
• The unused port must be closed with a copper cap, not with a plastic
cap.
4) Setting the Valve Group.
DIP S/W setting
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
4
3
3
1 2
2
1
(For 4 branches)
PRHR032(A) PRHR042(A)
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
!
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)
I.D 25.4(1) I.D 19.05(3/4)
1
Low Pressure
Gas Pipe
I.D 22.2(7/8)
O.D 19.05(3/4)
3
70(2-3/4)
I.D 9.52(3/8)
I.D 12.7(1/2)
Liquid pipe
I.D 19.05(3/4)
I.D 22.2(7/8)
1
I.D 25.4(1)
High Pressure
Gas Pipe
I.D 15.88(5/8)
O.D 19.05(3/4)
I.D 12.7(1/2)
1
110(4-11/32)
2 SW05M (Rotary S/W for addressing HR unit)
Must be set to '0' when installing only one HR unit.
When installing multiple HR units, address the HR units with
sequentially increasing numbers starting from '0'.
Ex) Installation of 3 HR units
A B
3 4
1 2
[Unit : mm(inch)]
ARBLB03321
I.D 19.05(3/4)
I.D 15.88(5/8)
I.D 12.7(1/2)
2
I.D 12.7
I.D 19.05(3/4) 83
(1/2)
(3-9/32)
I.D 15.88(5/8)
390(15-11/32)
3
413(16-1/4)
I.D 22.2(7/8)
I.D 28.58(1-1/8)
O.D 19.05(3/4)
O.D 25.4(1)
I.D 25.4(1)
1 2
80(3-5/32) 110(4-11/32)
I.D 12.7(1/2)
I.D 9.52(3/8)
I.D 6.35(1/4)
I.D 12.7(1/2) 74
I.D 9.52(3/8)
I.D 6.35(1/4) I.D 6.35(1/4) I.D 6.35(1/4) (2-29/32)
321(12-5/8)
332(13-1/16)
I.D 19.05(3/4)
I.D 22.2(7/8)
I.D 15.88(5/8)
2
I.D 19.05(3/4)
96
I.D 15.88
I.D 22.2(7/8)
(3-25/32)
(5/8)
421(16-9/16)
3
444(17-15/32)
O.D 15.88(5/8)
I.D 12.7(1/2)
I.D 12.7(1/2)
O.D 15.88(5/8)
I.D 9.52(3/8)
3 2
70(2-3/4)
110(4-11/32)
A B A B
3 4 3 4
1 2 1 2