Removal Of The Front Insulation Panel; Removal Of The Rear Insulation; Checks - Biasi Advance Plus 25C ERP Service Manual

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).
Burner gasket
Figure 18 .5
Before reassembling ensure the burner gasket is correctly
located .
Warning: After cleaning or replacement as detailed
above, it is deemed necessary to undertake a com-
bustion analysis as detailed in section "11 .3 Adjust-
ment" on page 30) .

18 .4 Removal of the front insulation panel

See warning note at the end of this chapter before to remove
this part .
1 Remove the Ignition and detection electrodes (see section
"18.2 Removal of the Ignition and detection electrodes" on
page 42).
2 Remove the burner (see section "18.3 Removal of the burn-
er" on page 42).
3 Remove the front insulation panel (Figure 18.6).
4 Assemble the new front insulation carrying out the removal
operation in reverse order. When fitting the new panel ensure
that the electrodes holes coincide with the holes of the com-
bustion chamber.
Front insulation
Figure 18 .6
Caution:
After any periodical servicing or disturbance the combustion
IGNITION AND DETECTION ELECTRODES
Air--- gas duct gasket
Siliconic gasket
chamber silicon seal (Figure 18.6) and the Air-gas duct gasket
(Figure 18.7) must be fully inspected and replaced at the discre-
tion of the service engineer.
After any disturbance to the chamber door seal the appiance
must undergo a full analytical combustion performance check.
Figure 18 .7

18 .5 Removal of the rear insulation

See warning note at the end of this chapter before to remove
this part .
Attention: Cover the inner of the condensing heat
exchanger to avoid that dirt and debris fall in the
coil .
1 Do the operations of section "18.3 Removal of the burner" on
page 42 from step 1 to step 3.
2 Remove the insulation "K" by pulling it towards the boiler front
(Hung it with a screwdriver tip) (Figure 18.8).
K
Figure 18 .8

18 .6 Checks

Check of the spark generator
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
There is not a significant way to verify the integrity of the spark
generator. When the fan turns but the burner does not light a
possible cause is a faulty spark generator and it is advisable to
replace it to locate the fault.
Check the position of the electrode edges
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