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6.
CONNECTION TO THE CHIMNEY
For safety reasons the door of the appliances with constructive system 1, must be opened only for the loading of the
fuel or for removing the ashes, while during the operation and the rest, the door of the hearth must remain closed.
The appliances with constructive system 2 must be connected to their own flue. The operating with open door is
allowed under supervision. The connection pipe to the flue must be the shortest possible, right, tight and according to
the current regulations.
The connection to the chimney must be performed with stable and strong pipes (we recommend a thickness of 2
mm). The pipe for smokes exhaust must be fixed hermetically to the chimney. The diameter inside the connection
pipe must correspond to the external diameter of the smokes exhaust small trunk of the stove. This is ensured by
pipes according to DIN 1298.
ATTENTION: Eventual flammable pieces in the area of 20 cm round the connection pipes must be changed with
fireproof and not sensitive to heat materials.
For a good operation of the equipment it is essential that in the installation place it is introduced sufficient air for
combustion (see chapt. 7).
The depression on the chimney should be 10 - 12 Pa (=1.0 - 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 m3/hour.
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.
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, then it is not suitable to be
burnt. The following cannot be burnt: rests of coal, cut-offs, parts of barks and panels, wet wood or treated with
varnished, plastic materials. In this case the guarantee on the appliance lapses. Paper and carton must be used only
for ignition.
The combustion of wastes is forbidden. This may damage the stove and the chimney, causing health
damages and claims by the neighbourhood owing to the bad smell.
22
ROSA - ROSETTA
1095080
– EN
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