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IGNITION AND DETECTION ELECTRODES
18 IGNITION / DETECTION ELECTRODE
AND BURNER
18 .1 Function
The ignition / detection electrode "A" is fitted on the left side of
the fan-burner group "D".
Figure 18 .1
A
B
C
D
E
E
The burner "F" is fitted on the rear of the fan-burner group "D".
Figure 18 .2
F
18 .2 Removal of the ignition / detection elec-
trode
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 General access
and emptying hydraulic circuits" on page 5).
2 Disconnect the electrode connector "A" and the earth wire
"C" (Figure 18.1).
3 Unscrew the screws "B" and remove the electrode "A".
4 Assemble the ignition / detection electrode carrying out the
removal operation in reverse order.
Warning: A new sealing gasket must be used during
refitting of the electrodes on all occasions of re
-
moval .
18 .3 Removal of the front insulation panel
See warning note at the end of this chapter before to remove
this part .
1 Remove the ignition / detection electrode (see section "18.2
Removal of the ignition / detection electrode" on page 43).
2 Remove the front insulation panel by sliding it forward (Figure
18.3).
3 Assemble the new front insulation carrying out the removal
operation in reverse order. When fitting the new panel ensure
that the electrode hole coincide with the hole of the combus-
tion chamber.
Figure 18 .3
Front insulation
Siliconic
gasket
Caution:
After any periodical servicing or disturbance the combustion
chamber silicon seal (Figure 18.3) must be fully inspected and
replaced at the discretion of the service engineer.
After any disturbance to the chamber door seal the appliance
must undergo a full analytical combustion performance check.
18 .4 Removal of the burner
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 "17.2 Removal
of the Air box and the Fan" on page 42).
2 Remove the Ignition and detection electrodes (see section
"18.2 Removal of the ignition / detection electrode" on page
43).
3 Unscrew the nuts "E" (Figure 18.1) and remove the cover of
the combustion chamber.
4 Remove the front insulation panel (see section "18.3 Remov-
al of the front insulation panel" on page 43).
5 Unscrew the screws "G" (Figure 18.4) and remove the burner.
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 18.4).
Summary of Contents for 47-583-46
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