Vessel; 10.8 Checking The Flue System; 10.9 Combustion Analysis Check - Biasi BASICA COND 28S User Manual And Installation Instructions

Electrodes disclaimer.
Note to service engineers: It is
required that the burner seal,
lip seal and mixing chamber
seal along with the flame de-
tection electrode are inspected
every year and replaced every
24 months. Failure to inspect
the flame detection probe, seals
and replace as required may
render the guarantee void.
Caution: After any periodical servicing or
disturbance the combustion chamber sili-
con seal Fig. 10.12 must be fully inspected
and replaced at the discretion of the service
engineer.
After any disturbance to the chamber door
seal the appliance must undergo a full ana-
lytical combustion performance check.
Fig. 10.13
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-
tle brush.
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MAINTENANCE
More specific maintenance will be valuated
and carried out by a competent Gas Safe
Registered Engineer.
10.7 Check the pressure of the
Drain the heating circuit as described in
section "Emptying the C.H. system" on
page 64 and check that the expansion
vessel pressure is not less than 1 bar.
If the pressure is less, see to correct pres-
surisation.

10.8 Checking the flue system

Have the integrity of the flue outlet and air
intake pipe, checked periodically, at least
once a year. For all the above maintenance
operations it is advisable to call an approved
Service Engineer.

10.9 Combustion analysis check

It is compulsory to conduct a combustion
analysis. Remove the plug as indicated in
Fig. 10.14 and carry out combustion analy-
sis check and adjustment if necessary as
described in the section "Gas valve - Ad-
justment - Chimney Sweep Mode" of the
Service manual.
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 cir-
cuit check all the connections
for gas leaks.
heating expansion vessel