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

AMERICA
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 (1.7mm
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 cookers 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
cooker. It is absolutely necessary that in the environment in which the cookers 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 two or three logs of wood per time. The wood pieces should have a length of
30 cm. and a maximum circumference of 30-35 cm.
Variety
Beech
Oak
Elm
Poplar
Larch*
Spruce*
Scots pine *
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
7096101 – Rev.05 – EN
Kg/mc
750
900
640
470
660
450
550
*Resinous wood not suitable for the burning
KWh/Kg moistness 20%
4,0
4,2
4,1
4,1
4,4
4,5
4,4
/hour.
3
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