than the outlet hole of the appliance.
Try to avoid too many curves and horizontal sections; if this is impossible, ensure that
there is always a slope of at least 2/3 cm per linear metre as compensation.
The same flue must never be used for more than one appliance.
4.4 Cleaning the tubes and flue
Every time you notice the draught is becoming difficult, you should clean the stove, the
tubes, and the flue.
The removal of soot and carbon residues must be carried out to the highest standards
using appropriate means. Cleaning should be performed when the stove is cold.
The junction pipe for the connection to the chimney must be shortest possible and the
junstion points of the single pipes must be hermetic. The connection to the chimney must
be performed with stable and strong pipes (we recommend a thickness of 2 mm). The pipe
for smokes exhaust must be fixed hermetically to the chimney. The diameter inside the
connection pipe must correspond to the external diameter of the smokes exhaust small
trunk of the stove.
ATTENTION: Possible flammable pieces in the area of 20 cm round the connection pipes
must be changed with fireproof and not sensitive to heat materials.
For a good operation of the equipment it is essential that in the installation place, there is
sufficient air for combustion. This means that through suitable openings, air must
recirculate for the combustion, even with doors and windows closed.
The depression on the chimney should be 12 Pa –The measurement must be done
always with the equipment hot. When the depression exceeds 15 Pa it is necessary to
reduce the same with the installation of an additional flue adjuster (butterfly valve) on the
exhaust pipe or in the chimney.
5. WOOD
Only burn dry wood! You must not only select quality wood but it must also be dry at
the moment in which you use it.
Remember that the calorific power of the wood drops considerably as the presence
of humidity means that a large part of the heat produced is used to evaporate the water
and, furthermore, the risks of obstruction increase rapidly with the condensation of the
vapors in the flue.
Recommended humidity of wood is up to 20%.
5.1 DRYING
Damp wood not only burns badly but also makes the lighting of the fire difficult and
damages the flue. The water vapor transports condensible products such as acetic acid,
alcohol, methyl alcohol and tars which contribute to the formation of incrustations which
are detrimental for the efficiency of your stove.
Fresh cut wood is useless as a fuel. Actually a considerable part of the energy
produced is only used to evaporate the water, which is up to 75% in young wood without
bark.
To obtain dry wood (15%-20% humidity) you must cut the weak wood (in winter) to the
desire length and cut it again in pieces with a maximum diameter of 8-15 cm. You must
then put them in a ventilated shelter for at least 2 years 84 for oak, the first with exposure
