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The device is equipped with registers of primary and secondary air by which it is adjusted the combustion air.
PRIMARY Air register (B
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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 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. For the correct arrangement (see paragraph NORMAL OPERATION).
SECONDARY Air register (A
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 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:
CLARA 13
IGNITION CONTROL (C
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Close - ; Open + ,
LIGHTING OPERATION :
Open the secondary air register (A), primary air register (B), open the ignition control (C), light up the fire.
After about 10 minutes, when the fire is lighted, close the thermostat (B) and the ignition control (C) and adjust the combustion course
with the controls (A). The openings for air (primary and secondary) must be opened together just a little (you must open the eventual
butterfly valve placed on the pipe of smokes exhaust). See chapter LIGHTING.
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.
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 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).
22
6)
Picture
6)
Mass of fuel hourly
kg/h
3,2
6)
See chapter LIGHTING.
shows some example solutions.
(A )
SECONDARY Air
OPEN
ENGLISH
(B)
TERTIARY Air
PRIMARY Air
OPEN 5 mm
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