18 Ignition And Detection Electrodes; Burner And Spark Generator; Function; Removal Of The Ignition And Detection Electrodes - Biasi M110.24SM/E Service Manual

18 Ignition and detection electrodes,

burner and spark generator

18.1

Function

Three electrodes are fitted on the fan---burner group.
Two of them, fitted on the left side of the fan---burner
group A, are the ignition electrodes B and are con-
nected to the spark generator C.
On the right side is the detection electrode D and it de-
tects the presence of the flame.
J
I
B
I
F
G
C
D
H
Fig. 18.1
The burner E is fitted on the rear of the fan---burner
group A.
36
Fig. 18.2
A
18.2
I
1
2
3
J
4
When reassembling the ignition electrodes be sure
to connect correctly the wires to the spark genera-
tor (see Fig. 18.3)
ignition electrodes
Fig. 18.3
18.3
D
A
Removal of the Ignition and detection
electrodes
Warning: isolate the boiler from the mains
electricity supply before removing any
covering or component.
Remove all the case panels and the sealed
chamber lid (see section 2) .
Disconnect the ignition electrodes connector F
and the earth wire G from the spark generator
(Fig. 18.1) and disconnect the detection elec-
trode connector H.
Unscrew the screws I and remove the ignition
electrodes B and the detection electrode D
(Fig. 18.1).
Assemble the Ignition and detection electrodes
carrying out the removal operation in reverse or-
der.
wire

Removal of the burner

Warning: isolate the boiler from the mains
electricity supply before removing any
covering or component.
earth wire
C