Hergom ARANDA Instrucciones Para La Instalación, Uso Y Mantenimiento página 52

This information will help you make the correct decision.
1.- How chimneys work
Basic knowledge of how chimneys work will help you to make the most of
your oven.
The function of the chimney is:
a) To evacuate the smoke and gases safely to the outside of the
house.
b) To provide enough draught in the fireplace for the fire to remain
lit.
What is draught?
The tendency of the hot air to rise creates draught.
When the range cooker is lit, the hot air rises up the chimney and goes
outside. The chimney flue heats up and keeps the draught. Until the range
cooker and the chimney are hot, the draught will not work properly.
The location, size and height of the chimney affect its draught.
The following must be taken into account:
- Chimneys located inside the home keep warm and, therefore, the
draught is greater.
- The chimney size recommended by the manufacturer maintains a
good draught.
- The height of the chimney affects the draught:
The chimney must stand out by at least one metre above the highest part
of the roof.
Other factors affect the draught:
- Houses with extremely good indoor insulation, without air currents:
with no air entering the stove, the draught is affected. This is corrected by
sending air from outside to the range cooker.
- Trees and/or tall buildings close to the home hinder the draught.
- The wind speed. Generally, persistently strong winds increase the
draught, although stormy winds may decrease the draught.
- Outside temperature. The colder it is outdoors, the better the
draught.
greater height ⇒ better draught
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