Flue - Nordica TermoISOTTA DSA Manuel Utilisateur

ACCEssORIEs
Room heating takes place:
a) by radiation: the heat is radiated into the environment through the panoramic window and the hot external surfaces of the thermo-
product;
b) by conduction: radiators or heat convectors of the centralised system fed by hot water produced by the boiler (see chapter
CaLCULaTion of THe THeRMaL poWeR)
The device is equipped with registers of primary and secondary air.
1A- PRIMARY air register
(Picture
With the primary air control is adjusted the passage of air through the ash drawer and the grate in the fuel direction. The primary air is
necessary for the combustion process. The ash drawer must be regularly emptied, so that the ash does not obstruct the primary air entry.
Through the primary air the fire is also kept alive.
during wood combustion, the register of primary air must be opened only for a while, because otherwise the wood burns fast and the
stove may overheat.
2B - sECONDARY air register
over the door of the hearth there is the secondary air control. This regulator must be open (the lever must be moved to the right),
especially for wood combustion, so that un-burnt carbon does not undergo a post-combustion. see chapter 10. Through this register it is
possible to adjust the power of the stove.
Leaving it slightly open, according to the flue of the chimney, it is possible to keep the glass clean.
The adjustment of the registers necessary to reach the rated calorific yield is the following one :
Fuel
Wood

FLUE

essential requirements for correct appliance operation:
• the internal section must preferably be circular;
• the appliance must be thermally insulated and impermeable and built with suitable materials which are resistant to heat,
combustion products and any condensation;
• there must be no narrowing and vertical passages with deviations must not be greater than 45°;
• if already used, it must be clean;
• all the sections of the flue gas duct must be accessible to inspection;
• inspection openings must be provided for cleaning.
• the technical data from the instruction manual must be respected;
if the flues are of a square or rectangular section, the internal edges must be rounded with a radius of not less than 20 mm.
for the rectangular section, the maximum ratio between the sides must be ≤ 1.5.
a section which is too small causes a reduction in draught. a minimum height of 4 m is advisable.
The following materials are FORBIDDEN and compromise the good operation of the appliance: asbestos cement, galvanised steel, rough and
Picture 1
porous internal surfaces.
For a correct installation please respect the sections/lengths of the flue shown in the technical data table. By installations
with different dimensions the flue must be suitably sized in accordance with EN13384-1.
The draught created by your flue must be sufficient but not excessive.
a section of the flue which is too large can present a volume which is too large to heat and therefore cause operating difficulties for the
appliance; to avoid this, it is necessary to intubate the appliance for its entire height. a section which is too small causes a reduction in draught.
ATTENTION: as far as concern the realisation of the flue connection and flammable materials please follow the requirements
provided by Uni 10683 standard. The flue must be at a suitably distance from flammable or combustible material using
suitable insulation or an air space.
it is FORBIDDEN to pass system piping or air ducts inside the flue. it is also forbidden to create moveable or fixed openings on
the flue itself, for the connection of further different appliances (see chapter ConneCTinG a fiRepLaCe oR open HeaRTH To THe
fLUe).
POKER
seRies
6)
6)
(Picture
Mass of fuel hourly
4,4 kg/h
shows some example solutions.
GLOVE
seRies
PRIMARY air sECONDARY air
CLOSED
ENgLIsH
TERTIARY AIR
OPEN PRE-ADJUSTED
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