4.2.2 Gasket control
Check the integrity of the gaskets sealing the door regularly.
They should be replaced once every one or two or three years, depending on the type of appliance and mostly on the operation
duration. In order to ensure an air-tight assembly the gaskets should maintain their characteristics of elasticity; as soon as they
harden they need to be replaced.
If the air intake control has been set on the closed position and the fire still keeps burning briskly it may probably mean that the
assembly is no longer sealed and airtight, and that is therefore time to replace the gaskets.
4.2.3 Cleaning of chimney flue
Even with the best appliances and chimneys the formation of creosote deposits is unavoidable. Therefore it is necessary to clean
the chimney and the vertical venting pipes regularly in order to avoid or reduce them.
Cleaning is recommended at least once a year and even more often if the appliance is used daily and fuel with features different
from those illustrated in section 1.4 is employed.
We recommend to to let the cleaning process being realized by a professional chimney sweeper, ask the address to your dealer.
The sweeper's intervention may represent an effective and economic solution to protect the installation from corrosion and keep it
in efficiency to grant those essential safety conditions that allow us to live with more serenity.
How soot and ash affect wood consumption: minor soot and ash are inevitably produced after the combustion (particularly after
bad combustion); they do not convey any heat and tend to obstruct the pipes thus producing acid condensation and reducing the
draught.
Regularly remove ash from the unit and clean the chimney flue.
A 2 mm thick deposit inside the heater can reduce the heat exchange by about 12%, which means that every 100 kg, 12 kg. of
wood are wasted!
Excessive soot may also cause fire in the chimney flue with unpredictable consequences.
Just before the beginning of the next season, particularly as regards unoccuppied houses, we recommend checking
the smoke channel and the chimney, in order to be sure that there is no clogging due to insects, birds or small
mammals' nests.}
ENGLISH
TECH 3
42
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