Bedienungsanleitung La Nordica Rosetta Sinistra BII (Seite 25 von 88) (Deutsch, Englisch, Französisch, Italienisch, Spanisch)

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ENGLISH

If the ues are of a square or rectangular section, the internal edges must be rounded with a radius of not less than 20 mm.

For the rectangular section, the maximum ratio between the sides must be ≤ 1.5.

A section which is too small causes a reduction in draught. A minimum height of 4 m is advisable.

The following materials are FORBIDDEN and compromise the good operation of the appliance: asbestos cement, galvanised steel, rough and

porous internal surfaces. Picture 1 shows some example solutions.



For a correct installation please respect the sections/lengths of the ue shown in the technical data table. By installations

with dierent dimensions the ue must be suitably sized in accordance with EN13384-1.

The draught created by your ue must be sucient but not excessive.

A section of the ue which is too large can present a volume which is too large to heat and therefore cause operating diculties for the

appliance; to avoid this, it is necessary to intubate the appliance for its entire height. A section which is too small causes a reduction in draught.

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 at a suitably distance from ammable or combustible material using

suitable insulation or an air space.

It is FORBIDDEN to pass system piping or air ducts inside the ue. It is also forbidden to create moveable or xed openings on

the ue itself, for the connection of further dierent appliances (See chapter CONNECTING A FIREPLACE OR OPEN HEARTH TO THE

FLUE).

CHIMNEY POT

The ue draught depends on the suitability of the chimney pot.

It is therefore essential that, if built in a handcrafted way, the exit section is more than twice the internal section of the flue (Picture 2) .

As it must always go past the ridge of the roof, the chimney pot must ensure exhaust even in the presence of wind (Picture 3).

The chimney pot must meet the following requirements:

• Have an internal section equivalent to that of the chimney.

• Have a useful exit section of double the internal section of the ue.

• Be built so as to prevent rain, snow or any foreign body entering the ue.

• Be easy to inspect, for any maintenance and cleaning operations.

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,comply with all current Standards and Regulations and to those envisioned by

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.



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 10 12 Pa Pascal (=1.0 =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.

La Nordica Rosetta Sinistra BII Seite 25

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