Bedienungsanleitung La Nordica America (Seite 16 von 44) (Deutsch, Englisch, Französisch, Italienisch)

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7096101 - IT - EN - DE - FR 17

6.2. CONNECTION TO THE CHIMNEY

Products 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).

Products with non-automatic door closing (type 2) must be connected to their own ue.

Operation with doors open is only allowed when supervised.

The connection pipe to the ue must be as short as possible, straight horizontal and positioned slightly in ascent, 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 ue.

The internal diameter of the connection pipe must correspond to the external diameter of the cooker 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.

IMPORTANT: the unused ue gas exhaust hole must be covered with its respective cap (See chapter: DIMENSIONS).

The chimney pressure (DRAUGHT) must be at least 12 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 sufcient air for combustion is introduced into the place of installation (see paragraph 7).

6.3. CONNECTING A FIREPLACE OR OPEN HEARTH TO THE FLUE

The ue gas channel is the stretch of piping which connects the thermo-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 thermo-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 at page 40.

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.

7. AIR FLOW IN THE PLACE OF INSTALLATION DURING COMBUSTION

As the thermo-product draw their combustion air from the place of installation, it is MANDATORY that in the place itself, a suf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. 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 intake of air for combustion in the place of installation must not be obstructed during operation of the thermo-product. It is absolutely

essential that in environments in which thermo-products are operated with a natural chimney draught, as much air as is necessary for

combustion is introduced, i.e. up to 20 m³/hour. The natural recirculation of air must be guaranteed by some xed openings to the outside.

Their size is established by regulations regarding the subject. Ask for information from a chimneys weep. 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

ow of fresh air.

The depression of an extractor hood can, in the worst case scenario, transform the ue of the thermo-product into an external

air inlet, re sucking the ue gases into the environment with very serious consequences for persons.

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