Air Entrance Into The Installation Place During Combustion; Admitted/Not Admitted Fuel - Nordica VIOLA Instructions Pour L'installation, L'utilisation Et L'entretien

GIULIETTA – ISETTA-07 – ISOTTA-07 – ISOTTA FORNO – VIOLA – VIOLETTA
For a good operation of the equipment it is essential that in the installation place it is introduced sufficient air for
combustion. This means that, through suitable openings, air must recirculate for the combustion, even with doors and
windows closed (see chapter 7).
The depression on the chimney should be 12 Pa (=1.2 mm of water column). The measurement must be done always
with the equipment hot (rating calorific value). When the depression exceeds 17 PA (1.7 mm of water column) it is
necessary to reduce the same with the installation of an additional flue adjuster (butterfly valve) on the exhaust pipe
or in the chimney.

7. AIR ENTRANCE INTO THE INSTALLATION PLACE DURING COMBUSTION

As the stoves take their combustion air from the installation place, it is essential that a sufficient quantity of air is
introduced in the installation room itself.
In case of tight doors and windows (for example houses built according to the energy saving criteria) it is possible that
the air entrance is not guaranteed, compromising the draught, the welfare and the security of the people. It is
necessary to guarantee a further air entrance through an external air intake, to be positioned in the nearby of the
appliance or through air connection towards outside or a near ventilated room, with the exception of thermal units
place or garages (FORBIDDEN).
The connection pipe must be flat with a minimum diameter of 120 mm, a maximum length of 4 m and with no more
than 3 bends. If there is a direct connection with the outside it must be endowed with a special windbreak.
The air entrance for combustion into the installation place must not be closed during the operation of the stove. It is
absolutely necessary that in the environment in which the stoves operate with the natural flue of the chimney, it is
introduced as much air as necessary for the combustion, i.e. up to 20 m
The natural recirculation of air must be ensured by some fixed openings on the outside. The size of the necessary
openings for air is fixed by the relevant prescriptions. Ask information to your chimney sweeper. The openings should
be protected with grids and should never be obstructed.
An extraction hood (aspirating) installed in the same room or in a room nearby, causes depression with output of
combusted gasses (smoke, smell). As consequence it is necessary to ensure more flow of fresh air.
The depression in an extraction hood can at worst hypothesis, transforms the flue into an external air intake,
by sucking the smokes of the rooms with dangerous consequences for the people.

8. ADMITTED/NOT ADMITTED FUEL

The fuel admitted is made of wood logs. One must use only logs of dry wood (water content max. 20 %). One must
load at maximum 2 or 3 logs of wood per time. The wood pieces should have a length of 30-40 cm's and a maximum
circumference of 30-35 cm's.
The wood used as fuel must have a moisture contents lower than 20%, which is obtained after at least 1 year drying
(tender wood) or 2 years (hard wood) and must be stored in a dry and ventilated place (for ex. Under a shed). The
wet wood makes ignition more difficult because it is necessary a greater quantity of energy to evaporate the existing
water. The humid contents has the disadvantage that, with the temperature lowering, the water condensates first in
the hearth and then in the chimney. The unseasoned wood contains about 60 % of H20, and then it is not suitable to
be burnt.
Among the others, the following cannot be burnt: remainders of coal, cut-outs, scraps of bark and panels,
humid wood or treated with varnishes, plastic materials; in this case the warranty on the equipment expires.
Variety
Beech
Oak
Elm
Poplar
Larch*
Spruce*
Scots pine *
Paper and carton must be used only for ignition.
The combustion of wastes is FORBIDDEN and may damage the stove and the chimney, causing health damages
and claims by the neighbourhood owing to the bad smell.
The wood is not a fuel, which allows a continuous operation of the appliance, as consequence the heating all over the
night is not possible.
ATTENTION: the continuous and protracted use of aromatic wood (eucalyptus, myrtle etc.) quickly damages the cast
iron parts (cleavage) of the product.
1195300 Rev.08 – EN
Kg/mc
750
900
640
470
660
450
550
* Resinous wood not suitable for the burning
3
/h.
KWh/Kg Moistness 20%
4,0
4,2
4,1
4,1
4,4
4,5
4,4
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