Stuv 21 - Maintaining the Fire; Putting out the Fire

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SN 34245 - 132149
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Stûv 21 - directions for use [en] - 0118
Two factors determine the rate of the
fire : the quantity of the wood burned
and the quantity of the combustion
air.
Use normal loads (see wood
consumption per hour, page9). After
a while, you will find the ideal setting
depending on the characteristics of
the flue, the room to be heated and
your personal preferences.
The weight of the wood is a
determining factor as well as the size
of the logs : two small logs will burn
more quickly than a large one of the
same weight because the surface area
of the wood exposed to the flame is
greater.
Setting combustion
The regulator lever of your Stûv21
allows you to control the quantity of
air that feeds combustion.
Maintaining the fire
When and how to reload the
stove ?
Before reloading, open the glass door
several centimetres for a few seconds
to allow time for the smoke to
disperse before opening completely.
The best time to reload is when the
logs are only producing small flames
sitting on a large bed of embers.
For the new logs to catch alight, they
must be heated until they reach their
ignition temperature. It is the heat
given off by the bed of embers that
heats the new load. If you are too late
in reloading, the bed of embers will
not be able to heat a full load quickly
enough. In this case you will have to
use a partial load.
Putting out the fire
Do not put any more fuel onto the
fire.
Close the air inlet valve [photo1].
Check that the stove is properly
closed.
Let the fire die down.
When the fire is out, close the outside
air inlet. This will prevent your house
from becoming cold.
A large load on a dying bed of embers
will lead to :
– the glass door, the stove and the
flue becoming dirty,
– greater pollution.
After reloading, it is advisable to open
the valve for a few minutes using the
cold grip.
Note
To avoid overheating, do not exceed
the maximum hourly consumption
(see page9).
Use wood that is dry. This will help
keep the glass door clean. It is
wasteful to burn wood with more
than 16% humidity !
Avoid resting logs against the glass
door as this leaves a mark.