First-Aid Measures; Flue - LA NORDICA MIGNON Instructions Pour L'installation, L'utilisation Et L'entretien

MIGNON

4.1. FIRST-AID MEASURES

Should any fire arise in the stack or in the flue:
a) Close the feeding door and the ash drawer door.
b) Close the controls of combustion air.
c) Extinguish the fire using carbon dioxide fire-fighting
means (CO dust).
2
d) Seek immediate intervention of FIRE BRIGADE.
DO NOT EXTINGUISH FIRE USING WATER JETS.
When the fire has been extinguished, let the flue check by an
expert to find possible cracks and permeable points.
5.

FLUE

Essential requirements for a correct operation of the appliance:
•
the internal section must be preferably circular;
• be thermally insulated and water-proof and produced with
materials suitable to resist to heat, combustion products
and possible condensates;
• not be throttled and show a vertical arrangement with
deviations not greater than 45° ;
• if already used, it must be clean;
• observe the technical data of the instructions manual;
Should the flues have a square or rectangular section, internal
edges must be rounded with a radius not lower than 20 mm. For
the rectangular section, the maximum ratio between the sides must
be ≤ 1.5.
A too small section causes a decrease of the draught. It is
1190000 – EN
100
A
30
50
B
(1)
(3)
(1) AISI 316 steel flue with double
chamber insulated with material
resistant to 400° C.
100% excellent.
(2) Refractory flue with insulated
double
coating in lightweight concrete.
Efficiency 100% excellent.
(3) Traditional clay flue showing a
square
Efficiency 80% excellent.
(4) Avoid flues with rectangular internal
section whose ratio differs from the
drawing. Efficiency 40% poor.
30
Picture 1
(2)
(4)
Max. A+1/2A
A+1/2A
A
Efficiency
chamber and external
section with cavities.
Picture 2
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