Immergas V2 Instructions And Warnings page 39

2.6 CONNECTING THE ZONES CONTROL UNIT KIT TO THE BOILER BY MEANS OF A ZONE SIGNAL STATE
On boiler models preset for communication with the zones control unit via a signal state, the Zones control unit can be connected to
boiler terminals 40, 41 and 21.
The Zones control unit will receive the following from the boiler:
- Enabling zone mode (Summer, Winter mode, etc.);
- Zone activation request from external devices connected to the boiler.
The boiler will receive the following from the Zones control unit:
- Central heating request from zones.
The Zones control unit must be connected to its own external probe (if necessary).
The mixed zone flow temperature must be adjusted on the zones control unit trimmers.
IMMERGAS MODELS WITH ZONE SIGNAL STATE OUTLET
1
3
Key:
1 - Zones control unit
2 - Boiler terminal board
3 - External probe (optional)
4 - External probe (optional)
5 - 230Vac 50Hz power supply
Eliminate jumper X40 on the boiler terminal board (see boiler instruction booklet).
2
4
BR - Brown
BL - Blue
Y/G - Yellow/Green
BR BL Y/G
5
12
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