Chimney Cowl; Outside Air Intake; Fuels Allowed/Not Allowed - Bronpi LORCA-R Instructions D'installation, D'utilisation Et D'entretien

D4.3
(1) In the case that there are chimneys placed side by side,
one of them must exceed to the other at least 50 cm in order
to avoid pressure movements among them.
4.2.

CHIMNEY COWL

The chimney draft also depends on the chimney cowl.
The chimney cowl should assure the smoke discharge even during windy days, having into account that it must exceed the top of the roof
(drawing D4.5).
(1) Industrial chimney of
prefabricated elements
that allow a good smoke
extraction.
D4.5
The chimney cowl must comply with the following requirements:
• It must have the same interior section of the chimney.
• It must have a usable exit section that is two times the one of the interior of the chimney.
• It must be constructed so that the rain, snow or any other objet do not enter inside.
• It must be easily accessible in order to do servicing and cleaning tasks.
It the chimney cowl is metallic, due to its own design adapted to the diameter of the pipe, the smoke discharge is assured. There are different
models of metallic chimney cowl, fixed, anti-return, and rotary or extractor.
5.

OUTSIDE AIR INTAKE

For the proper operation of the fireplace, it is essential that there is air enough for the combustion and re/oxygenation of the environment
where it is installed. In the case of houses built under the requirements of "energy efficiency" with a great degree of air tightness, it is possible
that the air intake is not guaranteed the fitter must assure compliance with the Technical Building Code. This means that the air must be able
to move for the combustion through some openings connected to the exterior, even when doors and windows are closed. Moreover, it must
comply with the following requirements:
• It must be placed in so that it cannot be obstructed.
• It must be connected to the environment where the equipment is installed and it must be protected by a grate.
• The minimum area of the outlet should not be less than 100 cm2. Check regulations on this issue.
• When the air flow comes through openings that are connected to the exterior of adjacent environments, it is important to avoid
air intakes in connection with garages, kitchens, toilets, etc.
6.

FUELS ALLOWED/NOT ALLOWED

The fuel allowed is wood. Use only dry firewood (max. moisture content 20%, which corresponds to firewood that was cut two years ago). The
length of the logs will depend on the model (you can check the technical features of each model in our web site www.bronpi.com).
Compressed wood briquettes must be used carefully in order to avoid harmful overheating of the equipment because they have a high
calorific power.
The wood used as fuel must be stored in a dry place. Damp firewood has approximately 60% of water. Therefore, it is not suitable to be
burnt because it makes the ignition more difficult due to the fact that the heat is used to vaporize the water. Moreover, the moisture content
has also the disadvantage that, when the temperature is lower, the water condense in the fireplace and the chimney. This causes the soot
accumulation and condensation, with the consequent risk of fire.
INSTALLATION, OPERATING AND SERVICING INSTRUCTIONS
(1) The chimney can't have obstacles around 10 m towards
walls or trees. Otherwise, raise it at least 1 m above the
obstacle. The chimney must exceed the top of the roof at least
1 m.
(2) Traditional chimney. The
proper exit section must be,
at least, two times the interior
section of the chimney, the best
is 2.5 times.
(3) Chimney with interior
cone smoke deflector.
23
D4.4
METALLIC FIREPLACES