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Figure 9.8
Figure 9.9
If there is any dirt on parts of the primary
condensate exchanger (which can be seen
after removing the burner casing), brush
them with a bristle brush and then remove
the dirt using a vacuum cleaner.
The burner does not require particular
maintenance, simply dust it off using a bris-
- 64 -
MAINTENANCE
tle brush.
More specific maintenance will be assessed
and performed by a technician from an Au-
thorised Service Centre.
9.6 Check the pressure in the heat-
Empty the heating circuit as described in
section "Emptying the heating circuit" on
page 62 and check that the expansion
tank pressure is not less than 1 bar.
If the pressure is lower, correct the pres-
sure.
9.7 Cleaning the domestic hot wa-
Descaling the domestic hot water exchang-
er will be assessed by a technician from an
Authorised Service Centre, who will perform
the cleaning using specific products.
9.8 Checking the flue gas expul-
Have a technician from an authorised ser-
vice centre periodically check the condition
of the flue gas exhaust duct, the air duct and
the efficiency of the flue gas safety circuit
(at least once a year).
9.9 Checking boiler efficiency
Carry out performance checks at the inter-
vals anticipated by the regulations in force.
For reassembly, repeat the oper-
ations but in reverse order, be-
ing careful not to damage the
gas pipe OR gasket when the
pipe is inserted in the gas/air di-
aphragm. Carry out the gas
tightness test after tightening
the gas pipe swivel joint.
ing expansion tank
ter exchanger
sion duct
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