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31
ENGLISH
Switch for setup of HR Unit
Main function of SW02M
1. Selection of the method for addressing valves of an HR unit
(Auto/Manual)
2. Setting the zoning control
SW02M
(Dip switch for setup of
the function of HR unit)
SW03M SW04M
SW01M/SW03M/SW04M
(Switch for manual valve
addressing)
SW01M
SW05M
(Switch for
addressing
HR unit)
7-SEG
#1 valve housing
#1 cooling valve
LED(green)
#1 heating valve
LED(red)
#4 valve housing
ON
S/W
Selection
No.1
Method for addressing valves of an HR
unit (Auto/Manual)
No.2 Model of HR unit
No.3 Model of HR unit
No.4 Valve group setting
No.5 Valve group setting
No.6 Valve group setting
No.7
Use only in factory pro-
duction (preset to “OFF”)
Zoning set-
ting (“ON”)
No.8
Use only in factory pro-
duction (preset to “OFF”)
SW02M
Auto Manual
Switch No.1 OnSwitch No.1 Off
DIP S/W setting
Normal control
Zoning control
HR UNIT PCB
4. Setting the Valve Group.
3. Selection of the model of the HR unit
* Each model is shipped with the switches No.2 and No.3 pre-adjusted
as above in the factory.
(For 2 branches)
PRHR021
(For 3 branches)
PRHR031
(For 4 branches)
PRHR041
Initial
Setting
1 branches
Connected
2 branches
Connected
3 branches
Connected
4 branches
Connected
1
2
3
1
2
1
3
2
4
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.
!
No.1, 2 Valve
/
No.3, 4 Valve
Control
No.3, 4 Valve
Control
DIP S/W setting
No.2, 3 Valve
Control
No.1, 2 Valve
Control
Not control
Example
Large capacity indoor unit
Large capacity indoor unit
1
2
3
4
Indoor Unit
Indoor Unit
Large capacity indoor unit
1
2
3
4
Indoor Unit
Indoor Unit
Large capacity indoor unit
1
2
3
4
Indoor Unit
Indoor Unit
Large capacity indoor unit
1
2
3
4
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
1
2
3
4
NOTE
!
If the large capacity indoor units are installed, below Y branch pipe should be
used.
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