Connecting A Fireplace Or Open Hearth To The Flue; Air Flow In The Place Of Installation During Combustion - LA NORDICA VICENZA Instructions Pour L'installation, L'utilisation Et L'entretien

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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 flue. The internal diameter of the connection pipe must correspond to the external diameter
of the appliance flue gas exhaust stub pipe (DIN 1298).
ATTENTION: as far as concern the realisation of the flue connection and flammable materials please follow the requirements provided by
UNI 10683 standard. The flue must be properly spaced from any flammable materials or fuels through a proper insulation or an air cavity.
Minimum distance safety 25 cm.
IMPORTANT: the unused flue gas exhaust hole must be covered with its respective cap (See chapter: DIMENSIONS).
The chimney pressure (DRAUGHT) must be at least 10, 11 Pa (=1.0 =1,1mm of water column). The measurement must always be carried
out when the appliance is hot (nominal calorific 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 sufficient air for combustion is introduced into the place of installation (see paragraph 8).
7.3.

CONNECTING A FIREPLACE OR OPEN HEARTH TO THE FLUE

The flue gas channel is the stretch of piping which connects the product to the flue. In the connection, these simple but extremely important
principles must be respected:
under no circumstances use a flue 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 flue gas channel causes a slight loss of head which must be compensated if necessary by
elevating the flue;
the horizontal stretch must never exceed 2 metres (UNI 10683);
each bend of the flue gas channel slightly reduces the flue 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 flue.
If the user wishes to use the flue as a fireplace or open hearth, it is necessary to seal the hood below the entrance point of the flue gas
channel pos. A
Picture 5 at page
If the flue 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 flue immediately under the chimney pot pos. C.

8. AIR FLOW IN THE PLACE OF INSTALLATION DURING COMBUSTION

As the product draw their combustion air from the place of installation, it is MANDATORY that in the place itself, a sufficient 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).
IMPORTANT: For a better comfort and corresponding oxygenation of environment, the air can be directly withdrawn at the outside. In order
to do that, the stove can be connected to the external air socket by an junction (see Chap. DIMENSIONS and
The connection pipe must be smooth with a minimum diameter of 100 mm. It must have a maximum length of 3 m and have no more than
three bends. If it is directly connected to the outside, it must be equipped with a suitable windbreak.
The intake of air for combustion in the place of installation must not be obstructed during operation of the product. It is absolutely essential
that in environments in which products are operated with a natural chimney draught, as much air as is necessary for combustion is
introduced, i.e. up to 20 (<11kW) m³/hour. The natural recirculation of air must be guaranteed by some fixed 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 flow of fresh air.
The depression of an extractor hood can, in the worst case scenario, transform the flue of the product into an external air inlet,
re sucking the flue gases into the environment with very serious consequences for persons.
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75.
VICENZA - VERONA
Picture 10 a pagina
77).
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