LG MULTI V 5 ARUM160LTE5 Installation Manual page 39

3
Selection of the model of HR unit
2
1
(For 2 branches)
PRHR022
PRHR022A
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.
WARNING
!
• If you want to use a PRHR032 or PRHR032A 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 or PRHR042A 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 or PRHR042A 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 switch 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
* Setting the Valve Group
This function is used to connect one indoor unit to two pipes.
(Large capacity indoor unit over 56 kBtu must be connected
to two pipes.)
NOTE
!
If the large capacity indoor units are installed, below Y branch pipe should be
used.
3
3
1 2
2
1
(For 3 branches) (For 4 branches)
PRHR032 PRHR042
PRHR032A PRHR042A
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
Y branch pipe
Models Low pressure Gas pipe
I.D22.2(7/8)
I.D15.88(5/8)
I.D25.4(1) I.D19.05(3/4)
4
1
I.D15.88(5/8)
ARBLB03321 390(15-11/32)
413(16-1/4)
I.D22.2(7/8)
I.D28.58(1-1/8)
O.D19.05(3/4)
O.D25.4(1)
3 1
80(3-5/32)
70(2-3/4)
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
SW01M/SW03M/SW04M (Dip S/W and tact S/W for
manual valve addressing)
1
Normal setting (Non-Zoning setting)
- Set the address of the valve of the HR unit to the central control
address of the connected indoor unit.
- SW01M: selection of the valve to address
SW03M: increase in the digit of 10 of valve address
SW04M: increase in the last digit of valve address
- Prerequisite for manual valve addressing : central control address
of each indoor unit must be preset differently at its wired remote
control.
SW01M
SW03M
SW04M
2
Zoning setting
- Set the address of the valve of the HR unit to the central control
address of the connected indoor unit.
- SW01M : selection of the valve to address
SW03M : increase in the digit of 10 of valve address
SW04M : increase in the last digit of valve address
SW05M :Rotary S/W
- Prerequisite for manual valve addressing : central control address
of each indoor unit must be preset
differently at its wired remote control.
(Unit: mm [inch])
Liquid pipe High pressure Gas pipe
I.D19.05(3/4)
I.D19.05(3/4)
I.D22.2(7/8)
I.D12.7(1/2)
I.D12.7(1/2)
2 I.D9.52(3/8)
I.D9.52(3/8) I.D6.35(1/4)
I.D12.7 83
I.D19.05(3/4)
I.D25.4(1)
(1/2) (3-9/32)
I.D12.7(1/2) 74
I.D12.7(1/2)
I.D9.52(3/8)
I.D6.35(1/4) (2-29/32)
3
321(12-5/8)
I.D22.2(7/8)
332(13-1/16)
O.D15.88(5/8)
O.D19.05(3/4)
I.D25.4(1)
3
2
110(4-11/32) 110(4-11/32)
A B
3 4
1 2
S/W No. Setup
No.1 Manual addressing of valve #1
No.2 Manual addressing of valve #2
No.3 Manual addressing of valve #3
No.4 Manual addressing of valve #4
Increase in the digit of 10 of valve
SW03M
address
Increase in the last digit of valve
SW04M
address
39
I.D19.05(3/4)
I.D22.2(7/8)
I.D15.88(5/8)
2
I.D19.05(3/4) 96
I.D15.88
I.D22.2(7/8)
(3-25/32)
(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)
A B
3 4
1 2