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Wiring diagram with heating phase active,
alarm signal and external gas valve.
The boiler is set up for the management of any
external pump, the pump is powered in concom-
itance with the heating request phase.
All relays can be configured as active heating pha-
se (see the boiler instruction book), the diagram
represents the connection on relay 1 or 3. If relay
2 is used, pins 57 and 58 of connector X25 on the
relay board must be jumpered.
The boiler is set up for the management of any
1
4
5
Key:
1 - Integrated P.C.B.
2 - Relay board
3 - Relay settings:
Relay 1 = CH On
Relay 2 = Alarm
Relay 3 = Gas Valve
4 - Connection terminal board 230 V
5 - 230 Vac - 50 Hz power supply
generic alarms. In addition, it is possible to
connect an external gas valve to be connected
to an LPG tank. All relays can be configured as
a generic alarm and as an external gas valve (see
the boiler instruction book)
The diagram shows relay 2 as a generic alarm. In
this case, it is necessary to jump pins 57 and 58
of connector X25 positioned on the relay board.
While relay 3 is configured as an external gas
valve supply.
2
3
6 - External Gas Valve 230 V
7 - Generic alarm signal 230 V
8 - System circulator
9 - Electrical connections of the active heating
phase (CH on) via K3 relay
10 - GPL
11 - GAS
59
The "heating phase active" control is enabled
when there is a heating request.
The ''generic alarm'' signal is enabled whenever
one of the envisioned anomalies occurs in the
boiler (see boiler book under ''Troubleshoot-
ing''). The ''external gas valve supply'' control is
enabled together with a burner ignition request
in the boiler.
10
6
7
9
Colour code key:
BK - Black
BL - Blue
BR - Brown
G - Green
GY - Grey
OR - Orange
P - Purple
PK - Pink
R - Red
W - White
Y - Yellow
11
8
Fig. 7-6
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