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AURA 80, CLASS 90, AURA 120, REA 100 PELLET-BURNING STOVE

EN - Rev. 1.6

Fig. A

The flue and connection to the same

The flue is an essential element for the efficient operation of the appliance. The flue must have a minimum cross-

sectional area as that indicated in the technical specifications of the appliance (80 mm). Each product must be equipped

with its own flue, without other adjoining elements (boilers, chimneys, stoves, etc.). The flue dimensions are closely

related to its height, which must be measured from the appliance flue gas outlet to the base of the stack. In order to

guarantee adequate draught, the surface of the chimney flue outlet must be double the flue cross-section. The discharge

pipe for combustion products generated by the forced draught device, must comply with the following requirements:
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It must seal off the combustion gases, as well as being waterproof and suitably isolated and insulated in relation to the

conditions of use (refer to UNI 9615);

It must be made of suitable materials capable of withstanding normal mechanical stress, heat, and the effects of

combustion gases and condensate, if any;

It must go upwards after the vertical section, for the entire remaining part, with a minimum gradient of 5%. The sub-
horizontal section must not have a length greater than ¼ of the effective height H of the flue or chimney, and must not

be longer than 2,000 mm;

It must preferably have a round internal cross-section: square or rectangular cross-sections must have rounded corners

with radius not inferior to 20 mm;

It must have a constant, free and independent internal cross section;

Rectangular cross-sections must have a maximum ratio of 1.5 between the sides;

If the flue is installed externally, it must be insulated in order to prevent the flue gases from cooling and allowing

condensation to form;

Parts made from non-combustible materials (it is absolutely prohibited the use of aluminium flue) - capable of

withstanding combustion gases and potential condensation - must be used for mounting the flue gas pipes (for the

section from the appliance to the flue inlet);

It is forbidden to use fibre cement pipes to connect the appliance to the flue;

Flue gas conduits must not pass through rooms in which the installation of combustion devices is prohibited;

The flue gas conduits must be assembled in such a way as to guarantee adequate sealing of flue gases during low

pressure operation of the appliance;

The installation of horizontal sections is prohibited;

It is prohibited to use counter sloping elements;

The flue gas pipe must allow for the recovery of soot or be cleanable, and must have a constant cross-section;

It is forbidden to allow other air intake conduits and system pipes to transit inside the flue gas pipes, even if they are

over-sized.

FURTHER SPECIFICATIONS TO BE CONSIDERED
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The appliance works with the combustion chamber in depression and the flue pipe in pressure; it is essential that the

flue gas outlet is hermetically sealed.

The flue pipes inside the installation room must be made of a suitable material

(see current regulations)

and equipped

with seal gaskets with a minimum diameter of 80 mm.

The pipes must have a double wall (thermally insulated) or be suitably insulated with rock wool. The maximum
temperature of the flue pipe inside the room must not exceed 70°C.