Handleiding La Nordica ESTER FORNO EVO (pagina 24 van 84) (Duits, Engels, Frans, Italiaans, Spaans)

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for the combustion. Primary air is also necessary to keep re live.

During the combustion of wood, the primary air register must be opened only a few, since otherwise the wood burns quickly and the

device can overheat (see chapter NORMAL OPERATION).

2A - SECONDARY air register (Picture 6)

Over the hearth door there is the secondary air register. Also this control must be opened (then moved to the right), especially for wood

combustion, so that unburned carbon does not undergo a post-combustion (see chapter NORMAL OPERATION).

It is possible to get the air SECONDARY directly from outside through a exible tube reproof NOT furnished (see chapter AIR FLOW

IN THE PLACE OF INSTALLATION DURING COMBUSTION).

The adjustment of the registers necessary to reach the rated caloric yield is the following one:

Hourly consumption in kg/h PRIMARY air SECONDARY air TERTIARY AIR

ESTER BII 2,2

CLOSED 9 mm OPEN

PRE-ADJUSTED

ESTER Forno EVO 2,2

67 mm OPEN 7 mm OPEN

PRE-ADJUSTED

THE FLUE

Essential requirements for correct appliance operation:

• the internal section must preferably be circular;

• the appliance must be thermally insulated and impermeable and built with suitable materials which are resistant to heat,

combustion products and any condensation;

• there must be no narrowing and vertical passages with deviations must not be greater than 45°;

• if already used, it must be clean;

• all the sections of the ue gas duct must be accessible to inspection;

• inspection openings must be provided for cleaning.

• the technical data from the instruction manual must be respected;

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

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