4. USE
4.1 OPERATION
During the operation, inside the cooker happens a combustive reaction of combustible (the wood
inserted in the combustion chamber) and burning (the oxygen present in the air of the room in
which the cooker is placed).
The wood fired cooker makes an intermittent combustion: after the lighting, the combustion goes
on till the exhaustion of the combustible but it can be maintained lighted by making another load
of combustible and so on.
The maintenance of the combustion in time is guaranteed by the correct working of the chimney,
which allows to evacuate the fumes and in the same time to feed the flame with comburent air. In
this way, the features of the chimney have a big influence on the correct working of the device.
The combustion of wood requests that the air flow inside the combustion chamber happens in
different points to obtain the maximum efficiency. In particular, it is present a primary air feeding
that flows in the lower part of the combustion chamber by the grill, and one or more secondary air
feedings that flow in the upper part of the combustion chamber.
The primary air is the main air and regulates the combustion speed.
The secondary air allows the post-combustion of the fumes, generating further heating, knocking
down the amount of harmful gas and so improving both the rendering and the impact on the
environment.
Once started the combustion it cannot be interrupted in a safe way: it must be always faded out
naturally with the exhaustion of all the combustible inserted.
WARNING! For a correct operation verify that the eventual external air intake in
the room and the air aspiration and ventilation grids are not obstructed.
4.2 STARTING
To allow an easier lighting of the cooker with cold chimney, wood fired cookers and thermal
cookers are endowed with starting key governed by a rod: if you extract this rod, the key opens.
The opening of the key creates a direct connection between the combustion chamber and the
chimney, in order to obtain a better draught. To light the fire, you can use well dried wood, very
subtly cut, together with the specific products you can find in commerce. The combustion may be
difficult as long as the chimney is cold. The necessary time depends on the chimney and on the
weather conditions. When the fire becomes powerful you must turn off the key in order to force
the fume to heat the other parts of the device. Both the cooker and the thermal cooker are
designed to work with the key turned off, the use with the key opened does not allow the device
to work at its best and may cause overheating and consequent damages.
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