Connection Of The Fireplace To The Chimney - Bronpi LORCA-R Instructions D'installation, D'utilisation Et D'entretien

Materials that are prohibited for the chimney and, therefore, damage the proper functioning of the equipment are: fibre cement, galvanized
steel (at least in the first few meters) and rough and porous interior surfaces. Drawing D4.1 shows some examples of solution.
All metallic fireplaces 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 D4.2).
The minimum diameter must be 4 dm2 (for example, 20 x 20 cm) for
chimneys with a diameter below 200 mm or 6.25 dm2 (for example, 25 x
25 cm) for equipments with a diameter higher than 200 mm.
A big section of the chimney (for example, diameter of the pipe superior
to the one recommended) may results in a volume too large to be heated
and, therefore, it can cause difficulties for the proper operation of the
equipment. In order to avoid this problem, it is necessary to enclose
the chimney in its entire length. However, a small section (for example,
diameter of the pipe inferior to the one recommended) may cause a
reduction of the draft.
The flue must be away from flammable or combustible materials through an appropriate insulation or an air chamber. In the case that
they pass through flammable materials compounds, they should be eliminated.
Inside, it is forbidden that there are pipes of installations or air abduction channels. It is also prohibited to do mobile or fixed openings
for connecting other different equipments..
If we use metallic pipes inside a masonry duct, it is essential that they are well insulated and with appropriate materials (insulating
fibre coatings) in order to avoid the deterioration of the masonry or the interior coating.
4.1.

CONNECTION OF THE FIREPLACE TO THE CHIMNEY

The connection to the fireplace for the smoke evacuation must be done with rigid aluminized steel pipes or stainless steel pipes.
It is forbidden the use of flexible metallic pipes or fibre cement pipes because they damage the safety of the connection because they
are subject to jerks and breaks, which causes smoke looses.
The chimney must be fixed hermetically to the smoke outlet of the fireplace. It should be rectilinear and with a material that supports high
temperatures (minimum 400ºC). It can have a maximum inclination of 45° whereby excessive deposits of condensation produced in the
initial stages of ignition and / or excessive soot formation is avoided. Moreover, it avoids the slowing down of the smoke when it comes out.
The lack of sealing of the connection may cause the malfunction of the equipment.
The internal diameter of the connection pipe should correspond to the external diameter of the chimney of the equipment. This service is
assured by the pipes complying with DIN 1298.
INSTALLATION, OPERATING AND SERVICING INSTRUCTIONS
(1) Stainless steel AISI 316 chimney with double insulated chamber and material
resistant up to 400°C. Efficiency 100% optimal.
(2) Traditional clay chimney with square section and holes. Efficiency 80%
optimum.
(3) Chimney with refractory material and double insulated chamber and exterior
coating made of lightweight concrete. Efficiency 100% optimum.
(4) Avoid chimneys with rectangular interior section different to the one of the
drawing. Efficiency 40% poor. Not recommended
D4.1
22
D4.2
METALLIC FIREPLACES