Check The Pressure Of The Heating Expansion Vessel; Cleaning The Domestic Hot Water Exchanger - Biasi Activ A Plus 30C User Manual And Installation Instructions

• The silicon gasket on the front panel of the
combustion chamber Fig. 9.13 has to be
changed when deteriorated and in any case
it is compulsory to substitute it every 2 years.
Fig. 9.13
• The detection electrode R in Fig. 9.13 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, pro-
vide for the substitution of the same.
Fig. 9.14
If the condensate primary exchanger ele-
ments are dirty (notable only after removing
MAINTENANCE
the burner body), brush them using a bristle
brush and remove the dirt using a suction de-
vice.
The burner does not require any particular
maintenance, just remove dust using a bristle
brush.
More specific maintenance will be valuated
and carried out by an Authorised Assistance
R
Centre Technician.
9.8
Drain the heating circuit as described in sec-
tion "Emptying the c.h. system" to page 78
and check that the expansion vessel pressure
is not less than 1 bar.
If the pressure is less, see to correct pressuri-
sation.
9.9
Descaling the domestic hot water exchanger
will be valued by an approved Sevice Engi-
neer, who will carry out any cleaning using
specific products.
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
the components of the gas circuit
check all the connections for gas
leaks.
Check the pressure of the heat-
ing expansion vessel
Cleaning the domestic hot wa-
ter exchanger
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