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8.11. Ducted system
In addition to the general requirements applicable to the smoke duct and to the chimney flue, the ducted system:
Must operate under negative pressure.
Must be inspectable.
Must comply with local regulations.
8.12. The chimney pot
Must be windproof.
Must have an inner cross-section equivalent to that of the chimney flue and an outlet smoke passage cross-
section equal to at least twice the inner cross-section of the chimney flue.
In the case of paired chimney flues (which should be at least 2 m apart), the chimney pot that receives the solid
fuel product discharge or that of the highest floor must be at least 200 cm above the other.
Must go beyond the reflux area (in Italy, refer to Standard UNI 10683)
Must allow for maintenance operations to be performed on the chimney
8.13. External air intake
To replenish the oxygen burned during stove operation, it is necessary to provide a suitable external air intake in the
installation room.
The air intake must preferably be located at floor level and must have a passing surface of at least 200 cm² (Ø 16).
Alternatively, it is possible to draw the air for combustion directly from the outside.
Connect a Ø 10 cm pipe directly to the back of the product, applying a protection grille which must not reduce the
useful through section. The diameter of the pipe depends on the pressure drops.
It is advisable not to exceed 3 meters in length depending on the draft of the flue pipe.
