Planika G20, Руководство по установке, Страница: 24 / 60

Copyright Planika Sp. z o.o. www.planikafires.com IG0251#05 06.03.2019 24
5.6.1. Air supply for the combustion process
The air necessary for the combustion process and the creation of a gas-air mixture should be brought under the
fireplace stove insert via a duct to the base of the place where it is installed. The air can be led through a separate
space under the fireplace. (e. g. a basement) or through an air channel passing directly through the outer wall of the
building. There is no need to connect the air duct directly to the fireplace. Due to the vacuum generated in the
chimney and the difference in temperature, air vents symmetrically located in the base of the fireplace stove enter
the combustion chamber and the flue gases are thrown out through a correctly installed flue pipe.
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WARNING! Any purpose-provided ventilation should be checked regularly to ensure that it is free from
obstruction.
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WARNING! V
entilation system in the room where the device is installed should be checked regularly to ensure
that it is free from obstruction.
Insufficient amount of the air supplied to the fireplace is the most common reason for its malfunction. Modern houses
are very airtight and old houses are insulated and sealed, so it is not possible for the fireplace to take enough air for
its proper functioning, but they need to be fed specifically through a separate duct.
WARNING!
In case of smaller fireplaces (up to 7 kW) it is acceptable that the fireplace draws fresh air directly from the
room in which it is located, but it is necessary that at the same time the same amount of air that will be discharged
through the chimney system together with the exhaust gases is supplied to this room (see Table 1). A ventilation grate
should be placed in the lower part of the fireplace housing and the fresh air intake into the room, where the chimney
is installed, should be placed as close as possible to the place of installation. However, this type of combustion air
supply cannot be used in all cases. This is regulated by separate local building regulations (see Section 5.6.2.).
In order to properly supply fresh air to the combustion process, it is necessary to:
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Make sure that the external air supply duct is airtight, insulated and fitted with a damper blade to prevent
heat loss when the fireplace is not in use;
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Make sure that the air inlet ducts are as smooth as possible and that they are thermally insulated if they pass
through cellars (condensation);
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Use as few bends as possible to decrease airflow resistance. Do not draw air into the fireplace from active or
closed ventilation ducts (very high air flow resistance).
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Remember that air should not be taken from the garage, cellar or street side, as dust and unpleasant odours
will flow into the room with it. It is best to take the air from the western direction, from which (e. g. in Poland)
the wind blows most often. If the inlet is located on the leeward side, there may be a vacuum in the supply air
duct on windy days and air may be drawn from the fireplace instead being supplied to the fireplace.
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Place the air inlet outside the building at a height of at least 1 m above the ground (in order not to draw in
dirty air). It shall end with a ventilation grille to prevent rodents from entering.