Lincar Monella Instructions D'utilisation Et D'entretien page 47

CHIMNEY CAP
The chimney cap should have the following characteristics:
Internal section equivalent to the one of the chimney
Exhaust section exit not lower than the double of the chimney internal one
Built in a way to avoid rain, snow or external body entrance, to ensure the right exit
of combustion products with any type of wind
Positioned to guarantee the right fumes dispersion especially out of re-flux area.
This area has several dimensions and conformations in function of the inclination
corner of the covering , therefore it is necessary to adopt the minimal heights as
indicated in the following tables:
Inclination Roof
C (°)
Re-flux
area
Chimney
Pot Wind
Damping
A H
15 1,85 1,00
30 1,50 1,30
45 1,30 2,00
60 1,20 2,50
Chimney pot
wind damping
Revolving
chimney pot
for strong
horizontal
wind
Re Flux Area Highness Z (m)
0,50
0,80
1,50
2,10
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IT-GB-FR mod. 940-940/SA