Bio Bronpi Radiofrecuencia Serie Instrucciones De Instalación, Uso Y Mantenimiento página 29

The draft also affects the intensity of the combustion and the heating performance of your equipment. A good draft of the fireplace needs a
reduced regulation of the air for the combustion, while a lack of draft needs a good regulation of the air for the combustion.
Therefore, it is essential that it is made perfectly and that it is subjected to maintenance operations in order to keep it in good conditions.
(Many of the claims due to malfunctioning reasons refer exclusively to a bad draft).
It is necessary to comply with the following requirements for the proper operation of the stove:
• The interior section must be preferably circular.
• It must be thermally insulated along its entire length in order to prevent condensation (the smoke is liquefied by heat shock) and even
more if the installation is outside the house.
• If we use metallic pipe for the installation outside the house, it is compulsory to use thermal insulated pipe. It consist of two concentric
pipes and, between them, there is a thermal insulator. Moreover, we will avoid condensation problems.
• It should not have bottlenecks (enlargements or reductions) and it must be vertical with deviations not higher that 45º.
• If it has been used previously, it must be clean.
• Respect the technical data of the instructions manual.
The optimum draft varies between 10 and 14 (Pascal). The measuring must be always made with the equipment hot (nominal heating power).
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 stove. When pressure exceeds 15 Pa it will be necessary
reduce it by installing an additional draft regulator.
To check if the combustion is correct, control if the smoke out the chimney is transparent. If the smoke is white it means that the equipment is
not properly regulated or the used pellet that is being used is too wet. However, if the smoke is grey or black it means that the combustion is
not completed (it is necessary a greater amount of secondary air).
The connection of the stove must be done with rigid aluminized steel pipes or stainless steel pipes. It is forbidden to use flexible metallic
pipes or fibre cement pipes because they damage the safety of the connection as they are subject to jerks and breaks, which causes smoke
looses.
Materials that are prohibited for the
chimney and, therefore, damage the proper
functioning of the equipment are: fibre
cement, galvanized steel and rough and
porous interior surfaces. An example of
solution is described below:
(1) Stainless steel AISI 316 chimney with
double insulated chamber and material
resistant up to 400°C. Efficiency 100%
optimum (see drawing D9).
All stoves that send smoke to the exterior
should have their own chimney. Never use the same chimney for several
equipments at the same time (see drawing D10).
As far possible, avoid horizontal sections. The horizontal section will not
be longer than 3 meters.
It must be installed a "T" with hermetic cover at the stove exit smoke that
allows the regular inspection or the heavy dust download.
There will not be more than 4 changes of direction, including the register
"T" for the cleaning.
In drawing D11 are represented the basic requirements for the chimney
installation of the stove:
INSTALLATION, OPERATING AND SERVICING INSTRUCTIONS
D9
Minimum height 1.5
D11
28
D10
Minimum height 1.5
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