PASIAN SOFIA, User Manual

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2.5 INSTALLATION OF THE CHIMNEY
The flue is of great importance for the regular functioning of a forced draft solid fuel
heating appliance, its installation is a very important operation for the functioning of the
stove, it is therefore essential that the flue is built at state of the art and always kept in
perfect efficiency.
Check with the local authorities if there are any restrictive regulations regarding the
combustion air intake, the smoke exhaust system, the flue.
The components that make up the smoke evacuation system must be declared
suitable for the specific operating conditions and provided with CE marking, the pipe
must be smoke-tight, have a vertical course without bottlenecks, be made of materials
impermeable to fumes, condensation, thermally insulated and suitable to withstand
normal mechanical stress over time.
It must be spaced from combustible or easily flammable materials with an air gap or
insulating materials.
The use of flexible or extensible metal pipes or unsuitable material is not allowed.
Single or double-walled steel pipes with a nominal internal diameter of 80 mm or 100
mm can be used depending on the model.
The minimum draft must be 12 Pa, the optimal one 15 Pa.
The flue must be brought to the roof and at the base of it must be mounted a "T" fitting
for smoke inspection with cap (figure 4). if it is not possible to make a totally vertical
barrel (recommended operation), it is advisable to make a maximum of 3 changes of
direction, in addition to that deriving from the rear connection of the stove, using the "T"
fittings with inspection cap. any variation of the discharge path.
The horizontal flue sections, if necessary, must have a maximum length of 2-3 m and a
slope of 5-10 °, in order to avoid the deposit of ash. For horizontal> 2 m, an increase in
the section of the flue is strongly recommended (e.g. from 80mm to 100mm). (figure 5).
fig. 4 fig. 5
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