Chimney Cap - LA NORDICA INSERTO CRYSTAL 50 Instructions Pour L'installation, L'utilisation Et L'entretien

INSERTO Crystal 50 – 50

5.1. CHIMNEY CAP

The draught of the flue depends also on the suitability of the chimney cap.
Therefore, if it is handicraft constructed, the output section must be more than twice as big as the internal section of
the flue.
Should it be necessary to exceed the ridge of the roof, the chimney cap must assure the discharge also in case of
windy weather (Picture 7).
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.
2 m
1
m
50 cm
6096801 - Rev.09 – EN
– 70 – 80 – 100
VERTICALE
10 m
H min.
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).
(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.
(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.
> _ A
>A
(1)Ridge axis
(2)Roof
(3) Chimney cap for
steel flue with internal
cone deflector of
smokes.
0,5 m
Picture 7
Picture 8
Picture 9
Picture 10
21