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6.
CONNECTION TO THE CHIMNEY
Cookers with automatic door closing (type 1) must operate, for safety reasons, with the furnace door closed (except
during the fuel loading or ash removal phases).
Cookers with non-automatic door closing (type 2) must be connected to their own flue.
Operation with doors open is only allowed when supervised.
The connection pipe to the flue must be as short as possible, straight and watertight.
Connection must be carried out with stable and robust pipes (we recommend a thickness of 2 mm) and be
hermetically secured to the flue. The internal diameter of the connection pipe must correspond to the external
diameter of the cooker flue gas exhaust stub pipe (DIN 1298).
CAUTION: if the connection passes particular compounds of flammable material, in the radius of 20cm around the
pipe, all flammable material must be replaced by fireproof, heat resistant materials.
For correct appliance operation, it is essential that sufficient air for combustion is introduced into the place of
installation (see paragraph 7).
IMPORTANT: the unused flue gas exhaust hole must be covered with its respective cap (See chapter 18).
The chimney pressure (DRAUGHT) must be at least 17-20 Pascal (=1.7-2 mm water). The measurement must always
be carried out when the appliance is hot (nominal calorific power). When the pressure exceeds 20 Pascal (2 mm
water), it is necessary to reduce it through the installation of an additional draught regulator (butterfly valve) on the
exhaust pipe or in the chimney.
7.
AIR FLOW IN THE PLACE OF INSTALLATION DURING COMBUSTION
As the thermocookers draw their combustion air from the place of installation, it is essential that in the place itself, a
sufficient quantity of air is introduced. If windows and doors are airtight (e.g. built according to energy saving criteria),
it is possible that the fresh air intake is no longer guaranteed and this jeopardises the draught of the appliance and
your health and safety. It is therefore necessary to guarantee a supply of fresh air through an external air inlet placed
near the appliance or by placing piping for combustion air which leads outside or to a nearby airy place, with the
exception of the boiler room or garage (FORBIDDEN).
The connection pipe must be smooth with a minimum diameter of 120 mm. It must have a minimum length of 4 m and
have no more than three bends. If it is directly connected to the outside, it must be equipped with a suitable
windbreak.
The intake of air for combustion in the place of installation must not be obstructed during operation by the
thermocooker. It is absolutely essential that in environments in which thermocookers are operated with a natural
chimney draught, as much air as is necessary for combustion is introduced, i.e. up to 25 m³/hour. The natural
recirculation of air must be guaranteed by some fixed openings to the outside. Their size is established by regulations
regarding the subject. Ask for information from a chimneysweep. The openings must be protected with grills and must
never be blocked up. An extractor hood (suction) installed in the same room or in a neighbouring one causes a
depression in the environment. This causes the leakage of burnt gas (dense smoke, smell); it is therefore necessary
to ensure a greater flow of fresh air.
The depression of an extractor hood can, in the worst case scenario, transform the flue of the thermocooker
into an external air inlet, resucking the flue gases into the environment with very serious consequences for
persons.
8.
PERMITTED/FORBIDDEN FUELS
The permitted fuels are wooden logs. Only dry wooden logs must be used (water content max 20%). The pieces of
wood should have a length of about 30 cm and circumference of 15 - 18 cm max.
The wood used as fuel must have a humidity content lower than 20% which is obtained with a drying time of at least
one year (soft wood) or two years (hard wood) placing it in a dry, airy place (for example under roofing). Damp wood
makes lighting more difficult, as a greater quantity of energy is necessary to make the water present evaporate. The
humidity content also has the disadvantage, as the temperature goes down, of causing the water to condense first in
the furnace and then in the chimney. Fresh wood contains about 60% H
Among other things which cannot be burned: carbon residues, cuttings, bark waste and panels, wood which
is damp or treated with varnishes, plastic materials; in this case, the appliance warranty is forfeited.
Paper and cardboard must only be used for lighting. The combustion of rubbish is forbidden and would also
damage the thermocooker and the flue, causing damage to health and, due to the bad smell, causing complaints from
the neighbouring area.
Wood is not a long-lasting fuel and therefore it is not possible to use the thermocooker for continuous heating during
the night.
28
O, therefore it is not suitable for burning.
2
ITALY Termo DSA
7095802 Rev.01 – EN
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