MCZ Alpha - Manual (Page 11)

INSTALLATION AND USE MANUAL
Chapter 2
page 11
Theoretic notions for installation Technical service - MCZ S.p.A. all rights reserved - Reproduction prohibited
2.6. CHIMENYPOT
If underestimated, it is a terminal impediment to correct "chimney
system" operations.
Chimney flue draught is also a function of its chimneypot.
Therefore, if hand made, its four exhaust sections must correspond to
the more than twice the internal section of the chimney flue.
Having to exceed the peak of the roof, the chimneypot will be
exposed to wind, therefore an industrial type is recommended.
Industrial
chimneypot
with
overlapping
prefabricated
elements.
Permits excellent
smoke exhaust.
Traditional hand
made chimneypot.
The right exhaust
section must be at
least
twice the
internal section of
the chimney flue,
2.5 times is ideal.
Steel chimneypot for
chimney flue with
internal
smoke
deflector cone.
Permits excellent
smoke exhaust.
Chimneypots must meet the following requisites:
•
They must have an internal section equal to that of the
chimney.
•
They must have a useful output section not less that double
that of the internal section of the chimney flue.
•
They must be built to prevent rain, snow and any foreign
object penetration in the chimney flue.
•
They most be installed to guarantee excellent smoke
dispersion and out of the reflux are where counter-pressure
formation is favoured.
For paired chimney flues, the chimneypot for solid
combustion and the one for the upper floor must be at
least 50cm higher than the other to avoid pressure
transfers between paired flues.
The chimneypot must not have obstacles within 10 mt
such as walls, waterbeds and trees. Otherwise, raise it
at least 1 mt over the obstacle and, in the event of
other nearby chimneypots, keep them at least 2 mt
away and, in any case, the chimneypot must exceed
the peak of the roof by at least 1mt.
UPPER FLOOR OR
SOLID COMBUSTION
LOWER FLOOR
1
m
t
0
,5
m
t
YES
NO