Installation manual
31
Ø80
Ø80
Sigillare con malta
di cemento
Sigillare con silicone
o malta di cemento
Inclinare verso
l'alto di 5 mm/m.
Inclinare verso il
basso di 5 mm/m.
Guaina in PVC
Guaina metallica
120
1 2 4
6
Espulsione fumi
Aspirazione aria
1) Flue outlet terminal with grill.
2) Ø80 M.F. pipe (it can be shortened if necessary or extended up to 20 m with 1 m or 0,5 m).
3) Multi-directional 90° bends Ø80 M.F.
4Air inlet terminal with grill.
6) Taps for flue/air analysis.
The chimney under pressure:
• it is supposed to have circular, square or rectangular section. In these two last cases
they have to be rounded to at least 20 mm radius
• has to have no auxiliary mechanical inlet members
• can have changes of direction which do not involve counterslopes; if the angle between
the chimneys and the vertical is wider than 30°, an inspection near the greatest change
has to be done in order to allow it in both cases. If this inspection is not satisfying, a
further inspection near the slightest change is to be done
• can be provided with smokebox, which is obligatory in the event that the outlet is
vertical and that its section has no chimney cap; the smokebox has to have at least
height 0.5 mt below the flue duct and it must be provided with opening and cleanout in
order to remove any possible impurities; it has to be done in such a way as to gather
and drain condensate
• can be provided with inspection door, above all if there is no smokebox
• can be provided with chimney cap having a section which has to be no less than twice
the chimney section. The chimney cap must prevent the rain, snow or impurities from
entering. Its form is supposed to outlet flues correctly and to avoid the external outlet
and/or freezing of condensate near their outlet section.
The outlet and the possible freezing of the condensate of the outlet section must be
warrantied also by the chimney which has no cap.
The tubing duct is a flue outlet system which is partially or totally installed in internal or
closed parts of a building. Beside having all the general requirements of the outlet
systems, it has:
• to be inspectionable and allow the standard cleaning and maintenance operations
• to allow its standard thermal expansions without changing its technical characteristics
• to avoid condensate stagnating along the duct. It has to warranty a ventilation door
towards the outside between the internal perimeter surface of the inner part and the
external perimeter surface of the flue duct. This interspace is supposed to have a net
free section at least equivalent to that of the flue duct; its base and its top are to be
open; in the event that the base opening is not immediately directed towards the
outside, a linking duct between the opening and the outside can be made; the base