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Technical Documentation
Electrical circuit.
F1
F3
Legend:
B1
- Flow probe
B2
- Domestic hot water probe (optional)
B4
- External probe (optional)
B5
- Return probe
E1
- Ignition electrode
E2
- Detection electrode
E4
- Overheating safety thermostat
E6
- Flue thermostat
F1
- Line fuse (board)
F2
- Line fuse (terminal block)
F3
- Transformer fuse
The VICTRIX 75 electrical circuit is connected to a microproc-
essor controlled p.c.b. that controls generator functions.
230 V AC circuit.
Line fuse (terminal block)
(F2)
Line fuse (board)
(F1)
STV75 ed 01/08
DISPLAY BOARD
External
circulating
pump Max. 1 A
Blue
Brown
Y/G
Safety devices and controls.
This interrupts power to the circuit when power input is over 2 A.
It is mounted on the boiler terminal block.
This interrupts power to the circuit when power input is over 2 A.
It is mounted on the integrated board
19
Technical Documentation
White
Red
Y/G
Blue
Brown
M1
- Pump
M20 - Fan
M30 - 3-way diverter valve (optional)
S1
- Main switch
S5
- System pressure switch microswitch
S16
- Summer switch (not provided to Immergas)
S20
- Room thermostat ON/OFF (optional)
T10
- Low voltage transformer
X40
- Room thermostat jumper
Y1
- Gas valve (24 Vdc)
Some of the device on the circuit work at mains voltage (230
Vac) while others work at a low voltage.
Black
Wh.
Purple
Purple
White
2 AF 250 V fuse
2 AF 250 V fuse
VICTRIX 75
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