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The interior section must be perfectly circular: rectangular or cross-sections must have rounded corners with a radius of not less than
20 mm.
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The interior section must be constant, free and independent.
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In order to avoid smoke flow returns or turbulences that may cause a blockage or reduce the correct smoke outlet, the connections will
be made by qualified staff, by following the steps on the safety rules point.
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The average draft of the chimney for the nominal power is ±12Pa when using wood pellets.
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To join the smoke ducts it is necessary to use non-flammable materials, resistant to the combustion products and their possible
condensations.
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It is forbidden to use fibre cement or metallic flexible pipes to connect the boiler to the chimney.
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It is important to install the necessary elements between the smoke duct and the boiler smoke outlet duct in order to avoid the support
of the duct on the boiler.
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Smoke ducts must not pass through the rooms where it is forbidden the installation of combustion equipments.
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The installation of the smoke ducts must be made so that they are airtight to smoke during operation and that the formation of any
condensation is limited to avoid that it flows towards the equipment.
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It is not recommended to install in horizontals sections. The maximum horizontal section allowed is 1 m (with an incline of 3%)
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In the case of installations where the flue exit through a ceiling or walls it should be in the same plane with respect to the equipment
smoke exit, the change of direction must be made by open bends not higher than 45º.
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In any case, smoke ducts must be airtight to combustion products and to the condensations and they must also be thermal insulated if
they pass outside the installation room.
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It is forbidden to install flues with a downward slope.
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The smoke duct must allow the cleaning of the soot or be easily accessible.
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The duct section must be constant.
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It is forbidden to pass any others air ducts or pipes inside the smoke channels. It is not allowed to fit devices to control manually the
draw in equipments with a forced draw.
All boilers that send smoke to the exterior should have their own chimney.
Never use the same chimney for several equipments at the same time.
It is necessary to install a "T" with hermetic cover at the boiler exit smoke
that allows the regular inspection or the heavy dust discharge.
Drawing shows the basic requirements for the chimney installation of a boiler:
The flue must be away from flammable or combustible materials through an appropriate insulation or an air chamber. Inside it, it is forbidden
the pipes of installations or air abduction channels. It is also prohibited to do mobile or fixed openings for connecting other different
equipments.
INSTALLATION, OPERATING AND SERVICING INSTRUCTIONS
Minimum height 5m
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Minimum height 5m
HYDROBOX, HYDROTEX AND HYDROCONFORT
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