La Nordica Candy [22/84] Technical description

La Nordica Candy [22/84] Technical description
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TECHNICAL DESCRIPTION
The chimney stoves of La Nordica are suitable to heat living spaces for some periods. As fuel, wood logs are used. The appliance
works as an intermittent operating appliance.
The stove is made of raw and enamelled meltings of cast iron.
The hearth is totally sheathed with single cast-iron sheets. Its back is extractable. Thanks to calibrated holes, made on the same
back, it is guaranteed a supply of pre-heated air inside the hearth, thus obtaining a post-combustion which increases the efciency
and reduces the emission of the unburnt gases. Inside it there is a turning and extractable grate. The inside smoke plate, reects the
re radiation and increases the internal temperature of the combustion chamber. This process together with the exhaust gases ows,
makes optimal the combustion and improves the efciency (see Picture 9 ).
The hearth is equipped with a panoramic door with ceramic glass (resistant up to 700 °C). This allows a wonderful view on the burning
ames. Furthermore, it is thus avoided the output of sparks and smoke.
Below the hearth door will be found an extractable ash-drawer with a closing door (Picture 8 - B).
The heating of the environment is made by irradiation: through the panoramic glass and the external hot surfaces of the stove,
the heat is radiated into the environment See chapter CALCULATION OF THE THERMAL POWER).
ACCESSORIES
POKER GLOVE
SERIES SERIES
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, 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. When the control is completely on the left,
the register is closed, when the knob is completely on the right the register is opened. 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).
2A - SECONDARY air register (Picture 6 )
Over the hearth door there is the secondary air register. Also this control must be opened (then moved to the right), especially for
wood combustion, so that unburnt carbon does not undergo a post-combustion (see chapter NORMAL OPERATION).
The adjustment of the registers necessary to reach the rated caloric yield is the following one:
Hourly wood consumption in kg / h PRIMARY air SECONDARY air TERTIARY AIR
CANDY
2 Picture 6 pos. 1 Picture 6 pos. 3 PRE-ADJUSTED
BRIGITTA
1,7 1/4 OPEN OPEN PRE-ADJUSTED
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;
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.
The minimum section must be 4 dm
2
(for example 20x20 cm) for appliances whose pipe dimensions are less than 200 mm,
or 6.25 dm
2
(for example 25x25 cm) for appliances with a diameter of more than 200 mm.
The draught created by your ue must be suf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 dif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 different appliances (See chapter CONNECTING A FIREPLACE OR OPEN
HEARTH TO THE FLUE).
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