Baxi Nuvola 3 Comfort Notice D'emploi Et D'installation page 33

28. ELECTRICAL CONNECTION TO A ZONE SYSTEM
28.1 CONNECTION OF THE RELAY BOARD (SUPPLIED AS ACCESSORY)
The relay board is not a standard boiler component as it is supplied as an accessory.
Connect the connectors CN6 of the boiler electronic board and of the relay board by means of the FLAT cable provided.
Connect the terminals 1-2-3 of the connector CN1 to the terminals 10-9-8 of the boiler terminal block M2 (figure 17).
BOILER BOARD
Figure 17
Connect the contact relative to heating requests in zones that are not controlled by the climate controller in parallel to
terminals 1-2 "TA" on terminal block M1 in figure 18.
The zone controlled by the climate controller is managed by the zone 1 solenoid, as illustrated in figure 18.
Figure 18
IMPORTANT:
make sure parameter F04 = 2 (as per factory setting – section 21).
INSTRUCTIONS FOR FITTERS
RELAY BOARD ACCESSORY
RELAY 2
RELAY 1
28.2 CONNECTING THE ZONES
ZONE 1
ZONE 1
(REMOTE CONTROL)
SOLENOID VALVE
ZONE 1
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ZONE 2 ZONE 3
(AMBIENT THERMOSTAT) (AMBIENT THERMOSTAT)
ZONE 4
(AMBIENT THERMOSTAT)
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