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La Nordica ESTER FORNO EVO Manual

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ENGLISH
the law, and be hermetically secured to the ue. The internal diameter of the connection pipe must correspond to the external diameter of
the appliance ue gas exhaust stub pipe (DIN 1298).
ATTENTION: as far as concern the realisation of the ue connection and ammable materials please follow the requirements
provided by UNI 10683 standard. The ue must be properly spaced from any ammable materials or fuels through a proper
insulation or an air cavity. Minimum distance safety 25 cm.
The chimney pressure (DRAUGHT) must be at least 11 Pa 12 Pa Pascal (=1,1 =1.2 mm of water column). The measurement must always be
carried out when the appliance is hot (nominal caloric power). When the pressure exceeds 17 Pascal, it is necessary to reduce it through the
installation of an additional draught regulator (false air valve) on the exhaust pipe or in the chimney, according to the regulations in force.
For correct appliance operation, it is essential that sucient air for combustion is introduced into the place of installation (see
paragraph VENTILATION AND AERATION OF THE INSTALLATION PREMISES).
CONNECTING A FIREPLACE OR OPEN HEARTH TO THE FLUE
The ue gas channel is the stretch of piping which connects the product to the ue. In the connection, these simple but extremely important
principles must be respected:
• under no circumstances use a ue gas channel with a diameter less than that of the exhaust clamp with which the product is equipped;
• each metre of the horizontal stretch of the ue gas channel causes a slight loss of head which must be compensated if necessary by
elevating the ue;
• the horizontal stretch must never exceed 2 metres (UNI 10683);
• each bend of the ue gas channel slightly reduces the ue draught which must be compensated if necessary by elevating it suitably;
• The UNI 10683 – ITALY regulation requires that under no circumstances must there be more than 2 bends or variations in direction
including the intake into the ue.
If the user wishes to use the ue as a replace or open hearth, it is necessary to seal the hood below the entrance point of the ue gas channel
pos. A Picture 5.
If the ue is then too big (e.g. 30x40cm or 40x50cm), it is necessary to intubate it with a stainless steel tube with a diameter of at least 200mm,
pos. B, taking care to close the remaining spaces between the pipe and the ue immediately under the chimney pot pos. C.
VENTILATION AND AERATION OF THE INSTALLATION PREMISES
As the product draw their combustion air from the place of installation, it is MANDATORY that in the place itself, a sucient 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.
IMPORTANT: For a better comfort and corresponding oxygenation of environment, the combustion air can be directly withdrawn at the
outside through a junction which is to be connected with a exible pipe. The connection pipe (not furnished) must be at with a minimum
diameter of Picture 9, a maximum length of 3 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.
There MANDATORY be sucient quantity of air for combustion and re-oxygenation of the room to ensure the device will work properly.
There should therefore be vents letting air in from outside the building and enabling circulation of air for combustion even when the doors
and windows are closed.
The air inlets must meet the following requirements:
• they must be protected with grids, metal mesh, etc., but without reducing the net useful section;
• they must be made so as to make the maintenance operations possible;
• positioned so that they cannot be obstructed;
• Any extractor hoods in the room where the device is installed must not operate at the same time as this could cause smoke to enter the
room, even with the replace’s door closed.
The clean and non-contaminated air ow can also be obtained from a room adjacent to that of installation (indirect aeration and ventilation),
as long as the ow takes place freely through permanent openings communicating with the outside.
The adjacent room cannot be used as a garage, or to store combustible material or for any other activity with a re hazard, bathroom, bedroom
or common room of the building.
Ventilation is deemed sucient when the room is equipped with air inlets according to the table:
Appliance categories Reference standard
Percentage of the
net opening section with respect to
the appliance fumes outlet section
Minimum net opening value of
the ventilation duct
Fireplaces UNI EN 13229 50% 200 cm²
Stoves UNI EN 13240 50% 100 cm²
Cookers UNI EN 12815 50% 100 cm²
Installation in premises with re hazards is forbidden. Installation in residential premises in which, in any case, the depression
measured during installation between the internal and external environment is greater than 4 Pa - reference for Italy according to
standard UNI10683.
All national, regional, provincial and municipal laws and standards in force in the country where the appliance is installed must be complied
with.
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