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7217395.01 - en
INSTRUCTIONS PERTAINING TO THE INSTALLER
26. ELECTRICAL CONNECTIONS TO A ZONAL HEATING SYSTEM
The relay board is not a standard boiler component as it is supplied as an accessory. Connect terminals 1-2-3 (common
- normally closed - normally open) of connector Cn1 on the relay board to the respective terminals 10-9-8 on the boiler
terminal board M2 (gure 13).
26.1 CONNECTING THE RELAY BOARD
RELAY BOARD
RELAY BOARD ACCESSORY
RELAY 2
RELAY 1
CG_1840 / 0901_1901
Figure 13
Connect the contact relative to heating requests in zones that are not controlled by the remote control device in parallel
to terminals 1-2 “TA” on terminal board M1. Remove the jumper.
The zone controlled by the remote control device is managed by the zone 1 solenoid, as illustrated in gure 14.
26.2 CONNECTING THE ZONES
ZONE 1
ZONE 1
REMOTE CONTROL
0901_1902
Figure 14
SOLENOID
ZONE 1
ZONE 2
AMBIENT THERMOSTAT
ZONE 3
AMBIENT THERMOSTAT
ZONE N
AMBIENT THERMOSTAT
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