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MAINTENANCE
The warm air heater and the burner must be serviced by an authorised service centre or by
qualified personnel, in compliance with the requirements set forth by law. For proper and
safe warm air heater operation, and for its long life, the operations listed below should be carried out
at regular intervals:
CAUTION! Before doing maintenance or servicing the appliance, disconnect it from mains supply
and close fuel supply.
CLEANING THE HEAT EXCHANGER
the heat exchanger must be cleaned from soot and deposits, to preserve heat exchange capacity.
Clean it at the end of each heating season or more often. Start-up defects could be due to the
presence of soot inside the heat exchanger, obstructing the exhaust gas line. The accumulation of
excess soot could depend on a variety of reasons, such as faulty draught, poor quality fuel, lack of air
in the burner. To clean the heat exchanger, proceed as follows.
FLUES (10)
Remove the rear panel, flue connection (8) and the 2 covers of rear fume box (9).
Clean the pipe interior, after removing the vortex tubes.
Collect the soot at the back. Before reinstalling the 2 covers of the fume box, check that its seals are
intact; otherwise, replace them with similar seals (with the same code). Remove the pipe on flue
connection (8) and clean rear fume box (9).
COMBUSTION CHAMBER (11)
Remove the burner from its plate (4).
Clean external walls for soot and deposits.
Check that the combustion chamber is not damaged.
Check that the seal of the burner supporting plate and the relevant seal on the nozle are in good
condition; if not, replace them with seals having the same code.
Note: All seals are asbestos-free and compliant with EC standards.
CLEANING THE FILTER ON AIR INLET
the filter is an accessory. A dirty filter reduces the air flow, increases discharge temperature, reduces heat
exchange and heater efficiency. It is very important to clean the filter at regular intervals, so that it remains
always clean. The cleaning interval depends on the amount of dust in filtered air.
To clean it, proceed as follows:
Rev4. del 17/09/2013
Pagina 30