Chimney - Bio Bronpi CARLOTA-MF Instructions D'installation, D'utilisation Et D'entretien

6.2.

CHIMNEY

The chimney is essential for the proper operation of the boiler or thermo-stove and it must fulfil with the following requirements or meeting
local national requirements
• The smoke duct must be free of blockages. Mounting predominantly in the vertical plane. Avoid bends and deviations in relation to the
vertical axis greater than 45% .
• At least, 5 meters of chimney will be installed to guarantee a good draw, trying to use double-wall pipes to optimise the hot smoke duct
from the boiler and avoid any condensation inside. In the external exits it is recommended to exceed the ridges or the highest point of
the roof in half a meter at least.
• The interior section must be perfectly circular: rectangular or cross-sections must have rounded corners with a radius of not less than
20 mm.
• The interior section must be constant, free and independent.
• 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.
• The average draught for the chimney at nominal thermal power is
±12Pa if the fuel used is pellet and ±25Pa when the fuel used is
olive stone.
• To join the smoke ducts it is necessary to use non-flammable
materials, resistant to the combustion products and their possible
condensations.
• It is forbidden to use fibre cement or metallic flexible pipes to
connect the boiler or termo stove to the chimney.
• 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 or thermo-stove.
• Smoke ducts must not pass through the rooms where it is forbidden
the installation of combustion equipments.
• 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.
• It is not recommended to install in horizontals sections. The
maximum horizontal section allowed is 1 m (with an incline of 3%)
• 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.
• 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.
• It is forbidden to
install flues with a
downward slope.
• The smoke duct
must allow the
cleaning of the
soot or be easily
accessible.
• The duct section
must be constant.
• 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 or thermo-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 D8).
It is necessary to install a "T" with hermetic cover at the boiler or thermo-stove exit smoke that allows the regular inspection or the heavy dust
discharge.
Drawing D9 shows the basic requirements for the chimney installation of a boiler or thermo-stove:
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.
The lack of sealing of the connection may cause the malfunction of the equipment.
In drawing D10 you can see the requirements for a correct installation.
INSTALLATION, OPERATING AND SERVICING INSTRUCTIONS
D8
Minimum height 5 m
D9
36 THERMO-STOVES AND BOILERS WITH AUTOMATIC CLEANING
Minimum height 5 m