Hr Unit Pcb; Switch For Setup Of Hr Unit - LG Multi V IV PRHR041 Installation Manual
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Also See for Multi V IV PRHR041:
- Service manual (12 pages) ,
- Installation manual (15 pages)
Table of Contents
28
HR Unit PCB
#1 valve housing
#1 cooling valve
LED(green)
#1 heating valve
LED(red)
(Dip switch for setup of
the function of HR unit)
Switch for setup of HR Unit
Main function of SW02M
ON
S/W
No.1
No.2 Model of HR unit
No.3 Model of HR unit
No.4 Model of HR unit
No.5 Valve group setting
SW02M
No.6 Valve group setting
No.7
No.8
1
Selection of the method for addressing valves of an HR unit
(Auto/Manual)
Switch No.1 Off
Auto
2
Setting the zoning control
Normal
control
Zoning
control
#4 valve housing
SW02M
SW01M/SW03M/SW04M
(Switch for manual valve
SW03M
SW04M
addressing)
Selection
Method for addressing valves of an HR
unit (Auto/Manual)
Use only in factory pro-
duction (preset to "OFF") Zoning set-
ting ("ON")
Use only in factory pro-
duction (preset to "OFF")
Switch No.1 On
Manual
DIP S/W setting
SW01M
Turn the dip switch of
the zoning branch on.
Ex) Branch 1,2 are zon-
SW01M
ing control.
3
Selection of the model of the HR unit
(For 2 branches)
PRHR021
Initial
7-SEG
Setting
1 branches
SW05M
(Switch for
Connected
addressing
HR unit)
SW01M
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 PRHR031 for 2 branches HR unit after clos-
ing the 3rd pipes, set the dip switch for 2 branches HR unit.
• If you want to use a PRHR041 for 3 branches HR unit after clos-
ing the 4th pipes, set the dip switch for 3 branches HR unit.
• If you want to use a PRHR041 for 2 branches HR unit after clos-
ing 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.
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.
3
2
2
1
1
(For 3 branches)
PRHR031
DIP S/W setting
Example
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
1 2
(For 4 branches)
PRHR041
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
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