Cleaning - Biasi Advance Plus 25C ERP Service Manual

15 Reassemble the Condensing heat exchanger carrying out
the removal operations in reverse order.
Ensure to tighten the nuts "H" - Figure 5.2 firmly.

5 .3 Cleaning

If there are deposits of dirt on the coil of the Condensing heat
exchanger, clean with a bristle paintbrush and remove the dust
with a hoover.
Warning: After cleaning or replacement as detailed
above, it is deemed necessary to undertake a com-
bustion analysis as detailed in chapter "11 .3 Adjust-
ment" on page 30 section "11 GAS VALVE" on
page 30 .
Figure 5 .4
Caution:
After any periodical servicing or disturbance the combustion
chamber silicon seal "S" Figure 5.4 and the Air-gas duct gasket
(Figure 5.5) must be fully inspected and replaced at the discre-
tion of the service engineer.
After any disturbance to the chamber door seal the appliance
must undergo a full analytical combustion performance check.
Remove any limescale from the detection electrode
and replace it if worn .
Figure 5 .5
CONDENSING HEAT EXCHANGER
S
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