Installation, use and maintenance manual
---- - WOOD BURNING STOVES
4.2
4.2
CHIMNEY COWL
CHIMNEY COWL
A properly installed chimney cowl ensures optimum stove
functioning. The anti-downdraught chimney cowl consists of a
number of components whose outlet section sum always
doubles the flue pipe section. Make sure the chimney cowl is
at least 150cm above the roof rise so that it is fully exposed to
the wind. The chimney cowls must:
●
have useful outlet section that is at least twice that of the
vent pipe.
●
be made in such a way as to prevent the penetration of
rain or snow.
●
be constructed in such a way as to ensure, in the event of
winds coming from any direction, the evacuation of
combustion products.
●
be free of mechanical intake auxiliaries.
Key: TP - flat roof; TI - sloping roof; d - distance; ZDF - reflux zone
Roof pitch α [°]
15
30
45
60
83103600 - 1.0 - 14/12/2022
Horizontal width of reflux zone
measured from top A axis [m]
1,85
1,50
1,30
1,20
Minimum height from roof for
discharging exhaust fumes H
min =Z+0.50m
1,00
1,30
2,00
2,60
Minimum height from roof for
discharging exhaust fumes H
min =Z+0.50m
0,50
0,80
1,50
2,10
EN
EN
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