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a) Fumes cool off more slowly inside the chimney due to the mass of bricks and
tiles.
b) As bricks accumulate heat, the house keeps warm longer after the fire is put
out.
c) It can be built to the specific requirements of each person.
d) If well built, it will be more resistant to fire than metal chimneys.
Brick chimneys must be well lined to prevent the fumes from losing temperature.
They must be built with materials that support high temperatures and corrosion.
They may be round, square...., what matters is their size.
Brick-work chimneys for the Hergom Nansa cooker must comply with the
measurements indicated in the chapter on TECHNICAL DATA.
The advantages of metal chimneys include:
a) Easy installation.
b) It is possible to change the direction of the chimney slightly, which provides
greater flexibility when deciding where the chimney should be installed.
c) Curved joints can be used, which eliminates acute angles that have a
negative effect on draw.
4.- Connection to the chimney
A cast iron joint is provided to connect the cooker to the chimney (in the luxe version).
The said joint is fitted to the outside of the cooker ring and, in turn, fitted to vertical
150mm pipes. The male coupling of the pipes is connected to the cast iron joint.
Bends and horizontal sections, which have a negative effect on draw and favour the
formation of creosote and soot, must be avoided in the vertical section of the chimney.
It is very important to seal the ring - elbow - pipe joint using refractory putty, plaster
or some other appropriate material to prevent air from seeping in.
The connection of the pipes that form the chimney, in the case of metal pipes, must be
sealed during assembly with the male coupling facing downwards. This will prevent
any creosote that forms inside from leaking out.
This advice must be followed whenever wood or coal is used as fuel.
5.- Some rules
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