1.2.2. Creosote formation and cleaning.
When wood burns slowly, it produces tar and other
organic fumes in the smoke conduits. When combined with
a damp atmosphere, they form creosote. Creosote fumes
may condense if the chimney walls are cold. If it catches
fire, extremely tall fires may be caused. Any accumulation
of creosote must be eliminated. It is very difficult to know
the exact moment when the chimney should be cleaned.
The safest way of ensuring that the chimney of your
fireplace is creosote free is by performing a visual
inspection.
Consequently,
installations that are easy to access for inspection
purposes.
1.2.3. Options.
If you are going to build a chimney for your insert
fireplace, you have two alternatives:
c) Brickwork chimney.
d) Metal chimney.
Studies have displayed that there is no great
difference in performance between metal and brick-cement
chimneys. You will have to choose one or the other.
Whenever possible, build your chimney inside the
house; this will provide better draw, lower creosote
accumulation and a longer life.
THE ADVANTAGES OF BRICKWORK CHIMNEYS
INCLUDE:
e) Fumes cool off more slowly inside the chimney
due to the mass of bricks and tiles.
f) As bricks accumulate heat, the house keeps warm
longer after the fire is put out.
g) It can be built to the specific requirements of each
person.
h) If well built, it will be more resistant to fire than
metal chimneys.
Brickwork 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 internal
diameter.
Brickwork chimneys for the insert fireplace must
comply with the measurements indicated in section 8.-
TECHNICAL DATA.
THE ADVANTAGES OF METAL CHIMNEYS INCLUDE:
e) Easy installation.
f) It is possible to change the direction of the
chimney slightly, which provides greater flexibility when
deciding where the chimney should be installed.
g) Curved joints can be used, which eliminates acute
angles that have a negative effect on draw.
h) Curved joints can be used, which eliminates acute
angles that have a negative effect on draw.
we
recommend
building
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