Chimney Cap Position - Nordica AMERICA Instructions Pour L'installation, L'utilisation Et L'entretien

AMERICA
heated and consequently cause difficulties in the operation of the device; to avoid this, tube the flue along
its whole height. A too small section causes a decrease of the draught.
The flue must be properly spaced from any flammable materials or fuels through a proper
insulation or an air cavity.
It is forbidden to let plant piping or air feeding channels pass in the same flue. Moreover, it is forbidden to
create movable or fixed openings on the same for the connection of further other devices.

5.1. CHIMNEY CAP POSITION

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 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
7096101 – Rev.05 – 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)
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.
(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).
The chimney cap must not show hindrances within 10 m
(3)
Chimney cap for steel
flue with internal cone
deflector of smokes.
Picture 4
Picture 5
Picture 6
21