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La Nordica Fortuna Manual

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ENGLISH
The stove is equipped with controls of primary and secondary air by which it is adjusted the combustion air.
1A - PRIMARY air register (Picture 6)
With the air register located under the door of the hearth (on the left), it is possible to adjust the air ow through the ash drawer and the
grating in direction of the fuel. The primary air is necessary for the combustion process during the ignition. In order to open the passage
of primary air the lever should be completely pulled. The ash drawer has to be emptied regularly, so that ash cannot hinder the intake of
primary air for the combustion. Primary air is also necessary to keep re live.
During the combustion of wood, the primary air register must be opened only a few, since otherwise the wood burns quickly and the device
can overheat (see chapter NORMAL OPERATION).
IMPORTANT: after using the riddling grate make sure the holes of the cast iron grate match the holes of the part to permit free
entrances of the primary air coming in.
2A - SECONDARY air register (Picture 6)
Under the door of the hearth (on the right) there is a secondary air register.
This valve must be opened (and therefore completely pushed), in detail, for the combustion of wood, so that unburnt carbon can be subject
to a post-combustion, increasing the yield and assuring the cleaning of the glass (see chapter NORMAL OPERATION).
It is possible to get the air SECONDARY directly from outside through a exible tube (reproof NOT furnished Picture 10 - A).
The adjustment of the registers necessary to reach the rated caloric yield is the following one:
Hourly consumption in kg/h PRIMARY air SECONDARY air TERTIARY AIR
FORTUNA 2 CLOSED OPEN Pre ADJUSTED
Fortuna STEEL 2 CLOSED OPEN Pre ADJUSTED
Fortuna PANORAMA 2 CLOSED OPEN Pre ADJUSTED
Fortuna BIFACCIALE 2 CLOSED OPEN /
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.
ATTENTION: as far as concern the realisation of the ue connection and ammable materials please follow the requirements
provided by UNI 10683 standard. The ue must be at a suitably distance from ammable or combustible material using
suitable insulation or an air space.
It is FORBIDDEN to pass system piping or air ducts inside the ue. It is also forbidden to create moveable or xed openings on
the ue itself, for the connection of further dierent appliances (See chapter CONNECTING A FIREPLACE OR OPEN HEARTH TO THE
FLUE).
CHIMNEY POT
The ue draught depends on the suitability of the chimney pot.
It is therefore essential that, if built in a handcrafted way, the exit section is more than twice the internal section of the flue (Picture 2) .
As it must always go past the ridge of the roof, the chimney pot must ensure exhaust even in the presence of wind (Picture 3).
The chimney pot must meet the following requirements:
• Have an internal section equivalent to that of the chimney.
• Have a useful exit section of double the internal section of the ue.
• Be built so as to prevent rain, snow or any foreign body entering the ue.
• Be easy to inspect, for any maintenance and cleaning operations.
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