48
INS
TALLER
U
SER
M
AINTEN
AN
CE
TECHNI
CI
AN
TECHNI
CAL
D
AT
A
3.5 WIRING DIAGRAM
38
Key (Fig. 38):
1
- 230 Vac 50 Hz power supply
2
- Modulation coil On/Off
3
- User interface
B1
- Flow probe
B2
- D.H.W. probe
B31
- Condensate probe
CARV2 - Comando Amico Remoto remote control V2 (optional)
E3
- Ignition and detection electrode
E4
- Safety thermostat
E13
- Flue safety thermofuse
F1
- Phase fuse
LCD1 - Display
M1
- Boiler circulating pump
M20 - Fan
M30 - 3-way valve
S2
- Selector switch functioning
S3
- Block reset button
S4
- D.H.W. flow switch
S5
- System pressure switch
S6
- Flue pressure switch
S20
- Room thermostat (optional)
S21
- Domestic hot water temperature increase button
S22
- Domestic hot water temperature decrease button
S23
- Heating temperature increase button
S24
- Heating temperature decrease button
T1
- Ignition transformer
T2
- Boiler P.C.B. transformer
X40
- Room thermostat jumper
Y1
- Gas valve
Colour code key (Fig. 38):
BK - Black
BL
- Blue
BR
- Brown
G
- Green
GY - Grey
Y/G - Yellow/Green
OR - Orange
P
- Viola
PK - Pink
R
- Red
W
- White
Y
- Yellow
W/B - White / Black
Comando Amico RemotoV2: the boiler is prepared for the appli-
cation of the Comando Amico Remoto remote control V2
(CARV2), which must be connected to clamps 40 and 41 of the
terminal board (located in the boiler control panel) respecting the
polarity and eliminating jumper X40.
Room thermostat: the boiler is prepared for the application of the
room thermostat (S20), which must be connected to clamps 40
and 41 of the terminal board (located in the boiler control panel)
eliminating jumper X40.
The user interface is on the welding side of the boiler bo-
ard.