3-2
1
2
3
4
6
5
7
9
8
CH ON
10
11
29
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
3.2 WIRING DIAGRAM.
Key:
A4 - Display board
B1 - Flow probe
B2 - Domestic hot water probe
B4 - External probe (optional)
B10 - Flue probe
E1 - Ignition electrodes
E2 - Detection electrode
E4 - Safety thermostat
F1 - Phase fuse
G2 - Igniter
M1 - Boiler circulator pump
M2 - Central heating pump
M20 - Fan
M30 - Three-way valve
R9 - Return probe unabling resistance
S5 - System pressure switch
S20 - Room thermostat (optional)
S34 - System supervisor connection selector
T1 - Boiler PCB transformer
X40 - Room thermostat jumper
Y1 - Gas valve
Z1 - Antijamming filter
BK - Black
BL - Blue
BR - Brown
G - Green
GY - Grey
G/Y - Green-Yellow
OR - Orange
P - Purple
PK - Pink
R - Red
W - White
Y - Yellow
1 - 230 Vac 50 Hz power supply
2 - Super CAR (Optional)
3 - Status signal
4 - IMG BUS connection
5 - System supervisor connection
6 - Storage tank configuration jumper
7 - External probe connection active
8 - S34 setting
9 - Supervisor connection active
10 - Domestic hot water
11 - Central heating
Remote controls: the boiler is designed for use
with the Comando Amico Remoto remote
control
V2
(CAR
V2
) or alternatively the Super
Comando Amico Remoto remote control, which
must be connected to clamps 42 and 43 of con-
nector X15 on the P.C.B., observing polarity and
eliminating jumper X40.
Room thermostat: the boiler is designed for the
application of the Room Thermostat (S20). Con-
nect it to clamps 40 – 41 eliminating jumper X40.
The connector X5 is used for the connection to
the relay board.
The connector X6 is for connection to a personal
computer.
The connector X8 is used for software updating
operations.
