Nordica FLY Instructions Pour L'installation, L'utilisation Et L'entretien page 19

FLY
As it is necessary to exceed the ridge of the roof, the chimney cap must assure the discharge also in case of windy
weather (Picture 4).
The chimney cap must meet the following requirements:
•
have internal section equivalent to that of the stack.
•
have a useful output section twice as big as the flue internal one.
•
be manufactured in such a way as to prevent the penetration of rain, snow, and any other foreign body in the
flue.
•
be easily checkable, for any possible maintenance and cleaning operation.
(1)
Industrial chimney
cap with pre-fabricated
elements – it allows an
excellent discharge of the
smokes.
50 cm
2 m
1
m
7193500 Rev.06 – EN
(1) In case of flues side by side, a chimney cap must be higher
than the other one of at least 50 cm in order to avoid pressure
transfers between the flues themselves.
10 m
(1) The chimney cap must not show hindrances within 10 m
from walls, pitches and trees. Otherwise raise it of at least 1 m
over the hindrance.
The chimney cap must exceed the ridge of the roof of at least
1 m.
>A
H min.
(1)ridge axis
α
(2)
Handicraft chimney
cap. The right output
section must be at least
twice as big as the
internal section of the flue
(ideal value: 2.5 times).
> _ A
0,5 m
(2)roof
(3)
Chimney cap for steel
flue with internal cone
deflector of smokes.
Picture 4
Picture 5
Picture 6
Picture 7
19