Removal Of The Rear Insulation; Checks - Biasi RINNOVA ADAPTIVE M300V.2025 SM Service Manual

Burner
gasket
Burner
Locating tab
G
Figure 18 .4
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 - Chimney Sweep Function" on page 31) .

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 "18.4 Removal of the burner" on
page 43 from step 1 to step 3.
2 Remove the insulation "H" by pulling it towards the boiler
front (Hung it with a screwdriver tip) (Figure 18.5).
H
Figure 18 .5
- 44 -
IGNITION AND DETECTION ELECTRODES

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.
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
1 Check for the correct distance between the metallic edge of
the electrode and burner (see Figure 18.6).
Figure 18 .6
Check the connection wires
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
Figure 18 .7
1 Remove all the case panels and the sealed chamber lid.
2 Check for the integrity of the insulation of wires which con-
nect the electrode.
The electrode in Figure 18.6 also functions as a sensor for the
correct drainage of the condensate.
Should the mentioned electrode come into contact with the con-
densate water present within the combustion chamber it sends
the boiler into safety lockout.
Therefore, should the insulation be wet or deteriorated, provide
for the substitution of the same.
Remove any encrustations and dirt from the detection electrode
or replace it if damaged.
Warning - Insulation panels material handling care .
Mineral fibres are used in this appliance for the insulation panels
of the combustion chamber
4 mm