20
S 1 – Controller wiring
Warning: Controller wiring may be performed by authorized staff only. Improper setting of the
Controller may cause damage to system components.
Key to terminal wiring
S 1.1 – Technical parameters of IR 12 controller
Power supply
Power supply voltage
24 V DC ± 5%
Power input
9.6 W max.
Installation
fuse board, on DIN rail
IP rating
IP 10B
Operating temperatures
0-50 °C
Relative humidity
10-95%, non condensing
Scheme No.
9,10,20,21,31,32
Other schemes
Other schemes
Scheme No.
9,10,20,21,31,32
zone 2
boiler return
heating water - zone 1
heating return
return valve opens
zone 1 valve opens
return valve closes
zone 1 valve closes
Ripple Control N
outside
Ripple Control L
flow meter
sensor 2 (RC)
ON/OFF source
UNI1 - (zone 1 pump)
power L
heating water - zone 2
sensor 1 (RC)
zone 1
DHW from ThSt pump
UNI output 0-10V 1 - (DHW recirc. pump)
fire pump
UNI output 0-10V 2 - (fire damper)
power L
sensor common ground
UNI2 - (zone 2 pump)
DHW upper
ThSt lower
power L
ThSt upper
sensor common ground
zone 2 valve opens
solar
zone 2 valve closes
DHW lower
power L
GSM modem RxD
solar pump
GSM modem TxD
diverter valve sol. tank 2
GSM modem RTS
OT modul comm. +
OT modul comm. -
power -24V
power +24V
CIB modules (e.g. UNI module)
CIB modules (e.g. UNI module)
DHW (diverter valve or source)
fire outlet
power L
