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DSA
TERMOROSA
lit in the presence of gas emissions or vapours (for example glue for linoleum, petrol, etc.) Never leave inflammable
materials close to wood burning stove/cooker.
During combustion thermal energy is released which implies a marked heating of the surfaces, doors, handles,
controls, glass, smoke tubes and also the front part of the appliance. Avoid contact with such elements without
protective clothing or without accessories (heat resistant gloves, control devices).
Ensure children are aware of these dangers and keep them away from the furnace during its operation.
When wrong fuel or fuel that is too damp is used, a fire could be caused by the deposits in the flue.
4.1. FIRST AID
If a fire is caused in the connection or in the flue:
a) Close the loading door and ash drawer.
b) Close comburent air registers
c) Put out the fire using extinguishers with carbon dioxide (C02 with powders)
d) Request immediate aid of Fire Brigade
NEVER PUT OUT FIRE WITH JETS OF WATER.
When the flue stops burning have it checked out by a specialist to identify any cracks or permeable points.
5.
FLUE
Essential requirements or correct operation of the appliance:
•
the internal section must be circular;
•
it must be insulated thermally and impermeable and built with
materials resistant to heat, products of combustion and any
condenses;
•
be free of obstructions and have vertical passageway with
deviations not greater than 45° ;
•
if already used must be clean;
•
comply with technical data of the instruction manuals;
If the flues were square or rectangular the internal corners must be
rounded with a radius not less than 20 mm. For the rectangular section
the maximum ratio between the sides must be ≤1.5.
A section that is too small causes a fall in the draught. A minimum height
of 4m is recommended.
The following materials are forbidden and compromise the good
operation of the appliance: fibrocement, galvanised steel, internal rough
and porous surfaces. Picture 5 shows some sample solutions.
The minimum section must be of 4 dm
appliances whose conduit diameter is lower than 200mm, or 6.25dm
(for example 25x25cm) for appliances with a diameter greater than
200mm.
The draught created by your flue must be sufficient but not
excessive.
A section of the flue that is too large can present a volume too large to
heat and therefore difficulty in operation of the appliance; to avoid this
maintain the same section for its entire height. A section that is too small
causes a fall in the draught.
The flue must be at a suitable distance from inflammable or combustible materials by an appropriate
insulation or air gap.
It is forbidden to obstruct inside the tubing of systems or air ducts. It is also forbidden to install adjustable or fixed
openings, on the same, to connect other devices (see chapter 16).
5.1. POSITION OF CHIMNEY CAP
The draught of the flue also depends on the suitability of the chimney cap.
It is therefore essential that, if built by hand, the free air outlet is more than twice the internal section of the flue.
7097501 – EN
2
(for example 20x20cm) for
(1)
(3)
(1) Stainless steel AISI 316 with double
chamber
insulated
resistant to 400° C.
Efficiency 100% excellent.
(2) Refractory lined flue with double
chamber and lightweight concrete
cladding.
2
Efficiency 100% excellent.
(3) Traditional flue in clay square section
with gaps.
Efficiency 80% excellent.
(4) Avoid rectangular flue with aspect
ratio which differs from the drawing.
Efficiency 40% average.
(2)
(4)
A+1/2A
Max.
A+1/2A
A
with material
Picture 5
25
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