Electrical Connection To A Zone System - Baxi Nuvola 3 Comfort Operating And Installation Instructions

28. ELECTRICAL CONNECTION TO A ZONE SYSTEM

28.1 - CONNECTION OF THE RELAY bOARD (SUPPLIED AS ACCESSORY)
The relay board is not included in the standard boiler equipment and 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 terminals 10-9-8 of the boiler terminal block M2 (figure 17).
BOILER BOARD
Figure 17
The contact for requesting the operation of the zones not controlled by the climate controller must be connected in parallel and connec-
ted to the terminals 1-2 "Ta" of the terminal block M1 in figure 18.
The zone controlled by the climate controller is managed by the solenoid valve of zone 1, as illustrated in figure 18.
Figure 18
IMPORTANT:
ensure that the parameter F04 = 2 (as in the factory setting - chapter 21).
INSTRUCTIONS FOR FITTERS
RELAY bOARD ACCESSORY
RELAY 2
RELAY 1
28.2 - ZONE CONNECTION
ZONE 1
ZONE 1
(REMOTE CONTROL)
SoLENoId VALVE
ZoNE 1
33
ZONE 2 ZONE 3
(AMBIENT THERMOSTAT) (AMBIENT THERMOSTAT)
ZONE N
(AMBIENT THERMOSTAT)
C607215 - GB