Biasi Advance Plus 16S User Manual And Installation Instructions page 73

ing fork K and remove the pipe J.
• Unhook the silencer pipe.
• Insert a flat screwdriver in the connector
recess M and lever towards the bottom,
disconnect the connector at the same
time O by pulling towards the front O (Fig.
9.9).
• Disconnect the fan connector P by press-
ing the plastic hook Q positioned at the
bottom part of the connector (Fig. 9.9).
• Unscrew screws N and remove the fan
burner unit 35 (Fig. 9.9)
• Unscrew the N screw nuts and remove
the burner group fan 35 (Fig. 9.9)
• Extract the burner casing by pulling it out-
wards.
Fig. 9.10
• The detection electrode R in Fig. 9.10 also
functions as a sensor for the correct drain-
age of the condensate.
Should the mentioned electrode come
into contact with the condensate 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.
MAINTENANCE
Fig. 9.11
If the condensate primary exchanger ele-
ments are dirty (notable only after removing
the burner body), brush them using a bristle
brush and remove the dirt using a suction
device.
The burner does not require any particular
maintenance, just remove dust using a bris-
R
tle brush.
More specific maintenance will be valuated
and carried out by an Authorised Assistance
Centre Technician.
Caution: After any periodical servicing or
disturbance the combustion chamber sili-
con seal Fig. 9.10 must be fully inspected
and replaced at the discretion of the service
engineer.
After any disturbance to the chamber door
seal the appiance must undergo a full ana-
lytical combustion performance check.
Attention, to reassemble repeat
the operations carried out in re-
verse order. Be careful not to
damage the OR gasket of the
gas pipe when inserting the pipe
in Air box.
After any service operation on
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