Technical Description; Flue - LA NORDICA FLO' Installation, Entretien Et Instructions D'utilisation

6. TECHNICAL DESCRIPTION

Definition: Product in compliance with EN 13240.
The appliance works as an intermittent operating appliance. The chimney stoves of La Nordica are suitable to heat living spaces for
some periods. As fuel, wood logs are used. The stove is made of sheets in galvanized and painted steel, of cast iron (grate and grate holder
of the hearth, exhaust pipe) of majolica tiles and of glass panels. The hearth is totally sheathed with cast-iron single sheets and refractory
material (NORDIKER). Inside there are a easy extractable thick flat grate and its holder. The combustion chamber is hermetic welded and
is sheathed with a painted steel carter.
The inside smoke plate, reflects the fire radiation and increases the internal temperature of the combustion chamber. This process together
with the exhaust gases flows, makes optimal the combustion and improves the efficiency.
The one-piece ceramic glass of the door (resistant up to 700 °C) allows a wonderful view on the burning flames. Furthermore, it is thus
avoided the output of sparks and smoke. Below the hearth grate there is an extractable ash drawer,
Room heating takes place:
a) By irradiation: through the panoramic glass and the external hot surfaces of the stove, the heat is radiated into the environment;
b) By natural convection: the passage of air through the coating and the covering hood releases heat in the
c) By forced convection: a ventilation kit suitable to improve the distribution of heat by ventilation only either of the installation room
or of the adjacent local.
The device is equipped with registers of primary and secondary air, with which it is possible to adjust the combustion air.
1A - PRIMARY air register
With the air register located under the door of the hearth (on the left), it is possible to adjust the air flow 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 fire 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).
2A - SECONDARY air register
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 unburned 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 flexible tube (fireproof NOT furnished
The adjustment of the registers necessary to reach the rated calorific yield is the following one:
Hourly consumption in Kg / h
2,3
ACCESSORIES
FLO'

7. 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 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 porous internal surfaces.
The minimum section must be 4 dm
dm (for example 25x25 cm) for appliances with a diameter of more than 200 mm.
2
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.
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).
18
_EN
(Picture 6 at page 62)
(Picture 6 at page 62)
PRIMARY air
Pos.1 Picture 6
RING Ø 120mm air fitting
ventilation additional
SERIES
Picture 1 at page 59
shows some example solutions.
(for example 20x20 cm) for appliances whose pipe dimensions are less than 200 mm, or 6.25
2
SECONDARY air
OPENED
POKER GLOVE
SERIES SERIES
(Picture 7 at page 62).
room.
Picture 6 at page 62
TERTIARY AIR
PRE-ADJUSTED
7194501
FLO'
).