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Manuale d'installazione, uso e manutenzione
SOFIA ILARIA VITTORIA ANNA
8 SMOKE EXHAUST TUBE
8.1 FOREWORD
Due to the frequent accidents caused by poor functioning of flue outlets installed in private dwellings, we have
prepared the following paragraph to assist the installer in his inspection of the parts concerned with eliminating the
gases produced by combustion.
The exhaust pipe must be installed in compliance with regulations UNI7129, UNI 10683, and with the stated
reference values. In particular, the outlet must comply with fire prevention regulations.
It is important to carefully follow the instructions set out below: failure to observe these instructions could
cause serious damage to the product, to the system, to objects and to persons using the appliance.
8.2 ROOM VENTILATION
ATTENTION: The presence of extraction fans or similar appliances, if operating in the same room or space in which
the product is installed, could cause problems for the correct operation of the product.
ATTENTION: do not obstruct the vents or the air inlets on the appliance.
The room where the appliance is installed must have a good air inflow to guarantee air for the appliance for the combustion process
and for ventilation of the room. The natural air inflow must take place directly through permanent openings on the outer walls or
through single or multiple ventilation ducting.
The ventilation air intake must be located away from pollution sources.
The openings in the walls must comply with the following conditions:
• have an unobstructed section of at least 6cm² for each Kw of installed thermal power, with a minimum limit of 100cm²;
• be made in such a way that the vent openings, both on the inside and outside of the wall, cannot be obstructed;
• be protected with grills or similar systems that do not reduce the opening section indicated above;
be situated at a height near floor level and they must not obstruct the correct operation of the combustion product discharge
devices; if this position is not possible the section of the ventilation openings must be enlarged by at least 50%.
The following chapter is not intended to replace UNI 7129, UNI 10683 and EN12815 standards. The qualified
installer must in any case be fully aware of this standard and its amending versions.
8.3 SMOKE OUTLET
The smoke channel, the exhaust pipe, chimney and flue outlet (defined as the system for the evacuation of
combustion products), are parts of the heating system and they must comply with the legislative requirements of the
Ministerial Decree D.M. 37/08 (ex Italian Law 46/90) and to the applicable specific installation regulations, according
to the type of fuel. Fireplaces, stoves and barbecues must not be installed in locations where gas appliances type A
and type B are present and operating (for the classification see UNI 10642 and UNI 7129). The connection between
the appliance and the flue outlet must only receive exhaust from one heat generator.
The installer must provide one or more access points on the flue outlet to check the emissions once the appliance
has been installed; these access points must be made in such a way as to be air-tight sealable to prevent exhaust
gas leaks.
It is recommended to provide insulation and to ensure the optimal sizing of the flue outlet in order to avoid the
possible risk of condensation forming in the flue outlet.
8.3.1 CHIMNEY TYPES
The following types of chimneys, constructed as described, are possible:
System: chimney installed using a combination of compatible components (flue liner, insulation, outer casing, etc…),
manufactured or specified by a single manufacturer and EC certified in accordance with the applicable standard;
Composite chimney: chimney installed and built on site using a combination of compatible components such as flue liner (wall in
direct contact with the flue gases), possibly also insulation and outer casing (wall) that may be supplied by different manufacturers
or by the same manufacturer.
Relining: operation involving the installation of a specific pipe in an existing shaft (even if newly constructed) made of non-
combustible materials, free from obstructions and for single use.
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