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18 iGnitiOn, detectiOn electrOdes
and burner
18 .1 function
Three electrodes are fitted on the fan-burner group.
Two of them, fitted on the right side of the fan-burner group A, are
the ignition electrodes B.
On the left side is the detection electrode C and it detects the
presence of the flame.
h
c
G
d
figure 18 .1
The burner J is fitted on the rear of the fan-burner group A.
J
figure 18 .2
IgnItIon and detectIon electrodes
G
b
18 .2 removal of the ignition and detection elec-
trodes
warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
1 Remove all the case panels (see section 2).
2 Disconnect the ignition electrodes connector D and the earth
wire E (Figure 18.1) and disconnect the detection electrode
connector F.
3 Unscrew the screws G and remove the ignition electrodes B
and the detection electrode C.
4 Assemble the Ignition and detection electrodes carrying out
a
the removal operation in reverse order.
i
18 .3 removal of the burner
e
i
warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
1 Remove the air box and the fan (see section "Removal of the
Air box and the Fan" page 42)
2 Remove the Ignition and detection electrodes (see section
i
"Removal of the Ignition and detection electrodes" page 43).
3 Unscrew the screws H (Figure 18.1) and remove the cover of
the combustion chamber.
4 Unscrew the screws I (Figure 18.1) and remove the Air-gas
duct lid.
f
5 Remove the burner by sliding it forward.
locating tab
figure 18 .3
6 Assemble the burner carrying out the removal operation in
reverse order. Ensure the burner is correctly located by lining
up the locating tab (Figure 18.3).
burner gasket
- 43 -
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