9
Johanna
Roof
slope
(α)
(α)
(α)
(α)
Distance A
H
15°
1.00 m
30°
1.30 m
45°
2.00 m
60°
More than 1.85 m
2.60 m
If the air is insufficient, even the operation of an extractor hood in the room or exhaust fans can negatively affect stove
operation.
2.5 Advice on flues and connections
Flues must be made from suitable materials and perfectly insulated, with characteristics that prevent temperature
decreases.
The inner walls must be perfectly smooth without any narrowing or protrusions along the entire length, so as not to
create friction or vortices in the smoke which could cause a considerable reduction in draught.
Any cleaning and inspection doors must be perfectly closed during operation.
The flue outlets must be 0.5 m higher than any obstacles located less than 10 m away and must end with chimney caps
or cowls having a useful outlet cross section of at least double that of the flue.
The following two figures give the data regarding the distances and positioning of chimney caps in conformity with the
provisions of UNI 10683/98.
ostacolo
Inferiore di 5 m
M
in
0
.5
m
Min 0.5m
circa 0.5m
Min 0.5m
La bocca del camino deve essere di almeno
0.5m dalla sommità di un ostacolo se questi
si trova ad una distanza inferiore ai 10m
fig 3 Chimney cap positioning and distances
UNI 10683/98 tables
Before connecting a heating stove to an existing chimney, in addition to complying with that described above, make
sure there are no openings or cracks where air could enter and cause a temperature decrease affecting the draught.
Also make sure there are no hindrances caused by
foreign bodies or a build-up of soot.
The first connection section leaving the stove
should be vertical, whereas the flue connection to
the chimney (which goes to the chimney cap) must
only enter by a few cm, so as not to reduce the
cross section of the flue.If the flue is not
perpendicular to the chimney it is advisable to
make the connection with
special steel fittings that allow a maximum slope of
45°.
If the walls and ceiling are made of flammable
materials, the parts in contact with the flue must be
suitably insulated. All connection joints must be
carefully sealed, in particular where the connection
enters the flue.
If there are several heating stoves in the same
home, each must have its own flue. It is inadvisable
to make openings in the flue for other appliances, since the draught could be negatively affected.
Roof slope
(α)
(α)
(α)
(α)
Distance B
H
15°
0.50 m
30°
0.50 m
45°
0.50 m
60°
Less than 1.85 m
0.50 m
NO
NO
SI
MAX 45°
Fig.4 Stove-chimney connection
