6
1.2 Chimney pot
The top of the chimney flue must be equipped with a device, called a chimney pot, which facilitates
dispersion into the atmosphere of combustion products.
The chimney pot must meet the following requirements:
•
Its internal section and shape must be equivalent to that of the chimney flue.
•
Have a useful outlet section no less than double that of the chimney flue.
•
Chimney pots that emerges from the roof or which remain in contact with the outside (for example in the
case of an open loft), must be covered with brick elements and well isolated. It must be constructed so as
to prevent penetration into the flue of rain, snow, or foreign bodies and so that, in the event of winds in any
direction and at any angle, it assures the discharge of combustion products (windproof chimney pot).
•
The chimney pot must be positioned so as to guarantee an adequate dispersion and dilution of combustion
products and, in any case, outside the zone of reflux. This zone can be different sizes and shapes depending
on the angle of slope of the roof, so it is necessary to adopt the minimum heights shown in
Fig.4
and
Fig.5
.
•
The chimney pot must be of windproof and exceed the height of the ridge
, Fig.4
and
Fig.5.
•
Any buildings or other obstacles that exceed the height of the chimney pot must not be close to the chimney
pot itself (
Fig.4
).
Fig.3 Fig.4
Fig. 5
