Bedienungsanleitung La Nordica DORELLA L8x (Seite 23 von 80) (Deutsch, Englisch, Französisch, Italienisch, Spanisch)

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ENGLISH

The chimney pressure (DRAUGHT) must be at least 12 Pa Pascal (=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.

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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