17
4.7 Replacing the control unit
Proceed as follows to replace the burner control unit (pic. 24).
- Unscrew the screw 1, open the lid 2 and disconnect the wires.
- Remove the coil 3.
- Unscrew the two screws 4.
- Move the box slightly and disconnect the high-voltage wires.
pic. 14
pic. 13
4.8 Burner ignition
In the event of shutdown, the red be pressed to reset.
The burner ignition cycle is light
7
on the control panel (pic. 25
summarised in the graphs in pic. 1) comes on and the reset button
C
on the burner (pic. 11)
12 s
12 s
pic. 15
A
2 ÷ 2.5 mm
4 ± 0.3 mm
3
1
2
4
Thermostat
Pre-heater
Motor
Ignition conversion
Solenoid valve
Flame
Emergency light
Ignition cycle
Shutdown due to ignition failure
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