O Ignition And Detection Electrodes, Burner And Injectors; Function; Checks; Removal - Biasi RIVA COMBI Service Manual

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Third Part (edition-0106) Ignition and Detection Electrodes, Burner and Injectors
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Ignition and Detection Electrodes,
Burner and Injectors

1) Function

2) Checks

3) Removal

1 Function
Three electrodes are fitted on the burner. Two of
them are the ignition electrodes and are fitted
near the front part of the burner. The ignition
sparks take place between their metallic edges
over the central ramp of the burner during the
ignition sequence.
The third electrode is the detection electrode and
it detects the presence of the flame.
Ignition
Female
2 Checks
A Check the position of the electrode edges
Warning: Isolate the boiler from the mains
electricity supply before removing
any covering or component.
1) Remove all the case panels, the sealed
chamber lid and the combustion chamber lid.
2) Check for the correct distance between the
metallic edges of the ignition electrodes (see
Figure 2).
RIVA COMBI SERVICE MANUAL – REV A
Detection
Male
Figure 1
Ignition
3) Check the integrity of the detection electrode
and ensure that its metallic edge is correctly
placed over the ramp of the burner.
B Check the connection wires.
Warning: Isolate the boiler from the mains
electricity supply before removing
any covering or component.
1) Remove all the case panels, the sealed
chamber lid and the combustion chamber lid.
2) Check for the integrity of the insulation of
wires which connect the electrodes to the
ignition device.
3 Removal
1) Remove all the case panels, the sealed
chamber lid and the combustion chamber lid.
2) Remove the deflector by unscrewing the
screws A and B (Figure 3).
3) Do the same operation as in section "Primary
exchanger" point 11.
4) Disconnect the electrode wires from the full
sequence ignition device.
5) Unscrews the screws C (Figure 4).
0.16 in
Figure 2
A
B
Figure 3
14-1