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3.5
Wiring diagram.
3
Key:
B1 - Flow probe
B2 - Domestic hot water probe
B4 - External probe
CAR
- Comando Amico Remoto remote control Version
V2
2 (optional)
DS1 - Display
E3 - Ignition and detection electrodes
E4 - Safety thermostat
F1 - Phase fuse
M1 - Boiler pump
M20 - Fan
M30 - Three-way valve
S2 - Selector switch functioning
S3 - Reset block key
S4 - Domestic hot water flow switch
S5 - System pressure switch
S6 - Flue pressure switch
The boiler is designed for application of a room thermostat (S20),
an On/Off room chronothermostat, a program timer or a Coman-
do Amico Remoto
remote control (CAR
V2
40 - 41 eliminating the jumper X40, paying attention not to invert
the polarity if the CAR
is installed.
V2
38
2
S20 - Room thermostat (optional)
S21 - Key to increase
DHW temperature
S22 - Key to decrease
DHW temperature
S23 - Key to increase
central heating temperature
S24 - Key to decrease
central heating temperature
T1 - Low voltage feeder
T2 - Ignition transformer
U1 - Rectifier inside the gas valve
connector (Only available on
Honeywell gas valves)
X40 - Room thermostat jumper
Y1 - Gas valve
Y2 - Gas valve modulator
). Connect to clamps
V2
1
1 - User interface
2 - N.B.: The user interface is on the
3 - 230 Vac 50Hz power supply
4 - Blue
5 - Brown
6 - Yellow/Green
7 - Black
8 - Domestic hot water
9 - Central heating
10 - Grey
11 - White
12 - Red
13 - Green
The connector X8 is used for the connection of the Virgilio Palm-
top in the microprocessor software updating operation.
welding side of the boiler board
36
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