Bronpi HYDRO Série Instructions D'installation, D'utilisation Et D'entretien page 24

• It should not have bottlenecks (enlargements or reductions) and it must be vertical with deviations not higher that 45º.
• Do not use horizontal sections.
• If it has been used previously, it must be clean.
• Respect the technical data of the instructions manual.
** For the fitter
The optimum draft for the thermo-stove vary between 12+/-2 Pa (1.0–1.4 mm water column). We recommend checking the technical
information of the product.
A lower value causes a bad combustion causing carbonic deposits and excessive smoke generation, having leaks and, even worse, an
increase of the temperature that could damage the structural components of the insert, while a higher value leads to a too rapid combustion
with the heat dispersion through the flue.
Materials that are prohibited for the chimney and, therefore, damage the proper functioning of the equipment are: fibre cement, galvanized
steel (at least in the first few meters) and rough and porous interior surfaces. drawing D4.1 shows some examples of solution.
All thermo-stoves that send smoke to the exterior should have their own chimney.
D4.1
Never use the same chimney for several equipments at the
same time (see drawing D4.2).
The minimum diameter must be 4 dm2 (for example, 20 x 20 cm) for
equipment with a diameter below 200 mm or 6.25 dm2 (for example, 25 x
25 cm) for equipments with a diameter higher than 200 mm.
A big section of the chimney (for example, diameter of the pipe superior
to the one recommended) may results in a volume too large to be heated
and, therefore, it can cause difficulties for the proper operation of the
equipment. In order to avoid this problem, it is necessary to enclose
the chimney in its entire length. However, a small section (for example,
diameter of the pipe inferior to the one recommended) may cause a
reduction of the draft.
The flue must be away from flammable or combustible materials through
an appropriate insulation or an air chamber. In the case that they pass
through flammable materials compounds, they should be eliminated.
Inside, it is forbidden that there are pipes of installations or air abduction
channels. It is also prohibited to do mobile or fixed openings for
connecting other different equipments.
If we use metallic pipes inside a masonry duct, it is essential that they are
well insulated and with appropriate materials (insulating fibre coatings) in
order to avoid the deterioration of the masonry or the interior coating.
INSTALLATION, OPERATING AND SERVICING INSTRUCTIONS
(1) Stainless steel AISI 316 chimney with double
insulated chamber and material resistant up to 400°C.
Efficiency 100% optimum.
(2) Traditional clay chimney with square section and
holes. Efficiency 80% optimum.
(3) Chimney with refractory material and double
insulated chamber and exterior coating made of
lightweight concrete. Efficiency 100% optimum.
(4) Avoid chimneys with rectangular interior section
different to the one of the drawing. Efficiency 40%
poor. Not recommended
D4.2
23 HYDRO RANGE