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La Nordica Isetta Evo 4.0 Manual

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ENGLISH
A - SECONDARY Air register Picture 6
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 unburnt carbon undergoes
a post-combustion (see chapter NORMAL OPERATION).
Through this register it is possible to adjust the power of the stove. Leaving it slightly open, according to the ue of the chimney, it is
possible to keep the glass clean.
B - PRIMARY Air register Picture 6
With the thermostat placed on the back of the right side of the stove, it 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 re 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. For the correct arrangement (see paragraph NORMAL OPERATION).
The adjustment of the registers necessary to reach the rated caloric yield is the following one:
Mass of fuel hourly
kg/h
(A )
SECONDARY Air
(B)
PRIMARY Air
TERTIARY Air
ISETTA EVO 4.0
ISETTA CERCHI EVO 4.0
2,0 40% OPEN CLOSED PRE-CALIBRATED
ISOTTA EVO
ISOTTA CERCHI EVO
3,2 OPEN OPEN 5 mm /
ISOTTA FORNO EVO 2,6 Picture 6 CLOSED PRE-CALIBRATED
C - IGNITION CONTROL Picture 6
Close --; Open + ( NO Isotta Forno EVO ) See chapter LIGHTING
Lighting Operation :
Open the secondary air register (A), primary air register (B), open the ignition control (C), light up the re.
The openings for air (primary and secondary) must be opened together just a little (you must open the eventual buttery valve placed on
the pipe of smokes exhaust). See chapter LIGHTING.
After about 10 minutes, when the re is lighted, close the thermostat (B) and the ignition control (C) and adjust the combustion course
with the controls (A).
Load The Fuel:
Before opening the hearth door, open the ignition control (C), load the fuel, close the door and after about 5 or 10 minutes close the
control (C). IMPORTANT: we suggest you to open the door very slowly, to avoid the exit of smokes.
WARNING: When fuel is added onto the embers in the absence of a ame, a considerable amount of fumes may develop. Should
this happen, an explosive mixture of gas and air may form, and in extreme cases an explosion may occur. For safety reasons it is
advisable to perform a new lighting procedure with the use of small strips.
THE 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 ue 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 ues 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
porous internal surfaces. Picture 1 shows some example solutions.
For a correct installation please respect the sections/lengths of the ue shown in the technical data table. By installations
with dierent dimensions the ue must be suitably sized in accordance with EN13384-1.
The draught created by your ue must be sucient but not excessive.
A section of the ue which is too large can present a volume which is too large to heat and therefore cause operating diculties 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.
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