Electrical Connections To A Zonal Heating System - Baxi Luna 3 Avant Series Instructions For The User And The Installer

27. 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 (fi gure 17).
BOILER BOARD
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 fi gure 18.
M1
1
2
BAXI - 925.200.1
925.492.2
27.1 CONNECTING THE RELAY BOARD
RELAY BOARD ACCESSORY
RELAY 2
RELAY 1
27.2 CONNECTING THE ZONES
ZONE 1
ZONE 1
REMOTE CONTROL
SOLENOID
Elettrovalvola
ZONE 1
Zona 1
M
1
2
3
4
5
6
7
N.O.
8
N.C.
9
C
10
M2
ZONE 2 ZONE 3
(AMBIENT THERMOSTAT) (AMBIENT THERMOSTAT)
2 3
T.A. T.A.
M M
E.V.3
E.V.2
RE2 RE3
INSTRUCTIONS PERTAINING TO THE INSTALLER
23
Figure 17
ZONE N
(AMBIENT THERMOSTAT)
L
n
T.A.
M
E.V.n
REn
N
Figure 18
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HU
CZ