Handling Fuels - SCAN 4-2 Instructions For Use Manual

6
Environmentally-Friendly Heating
Avoid restricting your wood-burning stove to an extent where no
flames are visible during the degasifying period, as this leads to
particularly inefficient heating. The gases released by the wood do
not burn due to the low temperature in the combustion chamber.
Part of the gas condenses in the wood-burning stove and flue
system as soot, and this could lead to your chimney catching fire.
The smoke that exits the chimney is bad for the environment and
has an unpleasant smell.
Lighting
We recommend the use of fire starters, or similar products, which
are available from your Scan dealer. Using fire starters helps to light
the wood quicker, and keeps the burning process clean.
Never use liquid lighting fuels!
„Top down" lighting
2-3 pieces of wood approx. 30 cm long with a weight of approx.
0.8 – 1.2 kg per piece.
1 piece of wood approx. 25 cm long with a weight of about 0.5 kg.
6 - 12 thin sticks of about 20 cm with a total weight of approx. 400
g.
3 fire starters.
Place the large pieces of wood crossways at the centre of the com-
bustion chamber, at a distance of 1 – 2 cm apart. Loosely place the
sticks on top. Place the fire starters between the sticks, and light.
Place the smallest piece of wood onto the sticks at a slight angle to
the larger pieces. Set the primary and secondary airflow controls to
maximum for about 20 - 30 minutes. When the larger pieces of wood
have caught fire properly, you can set the primary and secondary
airflow to the desired level.
„Top down" lighting is environmentally friendly.
Continuous firing
It is important to reach as high a temperature as possible in the
combustion chamber. This makes the most efficient use of the
wood-burning stove and fuel, and ensures a clean burning process.
At the same time, this avoids soot build-up on the combustion cham-
ber walls and glass. While the stove is lit, you should not see any
smoke, but just air movement that indicates the burning process.
After completing the lighting phase, you should have a good layer of
embers in the wood stove; you can then start stoking up the stove.
Lay 2 pieces of wood, of about 0.8 kg weight with a length of about
30 cm onto the fire.
Note! It is important for the wood to catch fire quickly. Use primary
air control to make sure this happens. Running the stove at too low
a temperature and with too little primary air can lead to deflagration
of the gases, and thus cause damage to the stove.
When stoking up with wood, always open the glass door carefully
to avoid smoke escaping. Stoke up with wood while the fire is still
burning nicely.
Using your stove in the spring or autumn
Occasional lighting of the stove using the „top down" lighting method
(see above) is recommended in changeable weather such as in
spring/autumn when your heating requirements are not as great.
Heating with open door
Note that your woodstove was not designed for continuous heating
with the door open, as this mode of operation will mean inefficient
burning, poor heating performance, and higher emission levels.
However if you do leave the wood-burning stove door open during
use, note that smoke may escape from the stove into the room
where the stove is located. The reason for this is that the smoke
temperature at the top of the chimney is lower than the ceiling tem-
perature in the room where the stove is located, and this causes
lower pressure in the room than in the chimney. Smoke may thus
be drawn into the room. Whether or not smoke actually escapes
into the room depends on your chimney design. Try heating the
stove with the door open in different weather conditions. If no smoke
escapes into the room, your installation is excellent. But if smoke
I N S T R U C T I O N S F O R H E AT I N G
escapes from the wood-burning stove into the room, make sure you
fit a smoke extractor to the chimney to avoid smoke build-up in the
room where the stove is located.
Why you need a chimney
The chimney is the wood-burning stove's motor; it's performance
decides how well your stove will work. The draft in the chimney cre-
ates a vacuum in the wood-burning stove. The vacuum draws the
smoke out of the stove, and takes in air through the combustion air
baffle to fuel the burning process. Combustion air is also used for the
airwash system that keeps the window clear of soot.
The draft in the chimney is caused by the difference in tempera-
tures inside and outside the chimney. The higher the temperature
difference is, the better the draft in the chimney will be. It is thus
important for the chimney to reach operating temperature before you
adjust the damper to restrict combustion in the stove (a brickwork
chimney will take longer to reach operating temperature than a steel
chimney). It is very important to reach operating temperature as
quickly as possible on days on which the draft in the chimney is poor
due to unfavorable wind and weather conditions. Make sure the fuel
ignites as quickly as possible (with visible flames). Chop the wood
into particularly small pieces; use an extra fire lighter etc.
After longer periods of disuse, check the chimney flue for blockage.
You can connect several units to the same chimney. But make sure
check with your chimney sweep to observe local regulations.
No matter how good your chimney is, it will not perform well if you
do not use it correctly. On the other hand a poor chimney, may give
you acceptable results if you use it correctly.
Using your stove in various weather conditions
Wind blowing on the chimney can have a great effect on how your
stove reacts in various wind conditions; you may need to adjust the
airflow to achieve good burning results. Fitting a damper in the flue
pipe may also help as it will give you the ability to regulate the drau-
ght in changing wind conditions.
Fog can also have a great influence on how well a chimney draws;
you may again need to adjust the airflow settings to achieve good
burning results.
General Notes
Your wood stove is not designed for continual heating for periods of
over 24 hours.
After longer breaks you should check the smoke outlet paths for
blockages before lighting.
Please note! Parts of the wood-burning stove, especially the
outer surfaces, become hot during use. Please exercise due
care.
Never empty ashes into a flammable container. Ashes can
contain glowing embers long after you finish using your wood
stove.
Chimney fires
In case of a chimney fire, keep the stove door, the ash drawer, and
all the valves on the stove closed. In case of emergency, call the
fire service.

Handling fuels

Selecting Wood/Fuel
You can use any type of wood as firewood. Generally speaking hard-
woods such as beech and ash are best for heating. They burn evenly
and do not create much ash. Other wood types like maple, birch and
spruce are excellent alternatives.
Handling
Firewood is best if you fell the tree, and saw and split the wood,
before May 1st. Remember to cut the logs to match the size of
your wood-burning stove's combustion chamber. We recommend
a diameter of 6-10 cm. The length should be about 6 cm shorter
than that of the combustion chamber to leave enough space for air
to circulate. Firewood with a greater diameter needs splitting. Split
wood dries faster.