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• Wood originating from Europool palettes
• Waste, household rubbish or old clothing
• Paper, paper briquettes, cartons
• Damp wood (residual moisture over 25%)
• Plastics / foams of all types
• Solid or liquid materials foreign to wood
It is prohibited to burn these and other unsuitable materials in your fireplace
cassette. If materials other than the approved fuels of firewood or wood
briquettes according to DIN 51731 are burnt, this can lead to the formation
of dangerous gasses and disruption to the burning process right through
to deflagration. The guarantee is rendered void if the fireplace cassette is
operated using non-approved fuels. Use small pieces of wood to get the
fire going. Only use chopped wood that is no thicker than approx. 8 cm at
its thickest point. The optimal length of the wood is approx. 25 cm. Do not
add too much wood to the fire for continuous heating, it is preferable to add
small volumes of wood.
5.9 CO
- NEUTRALIT Y
2
Wood only releases as much carbon dioxide as it collected and trapped from
the air as a tree. It is irrelevant in this case whether the wood is burned or
rots in the forest – the carbon dioxide released always remains the same.
New trees absorb the carbon dioxide that is released from the wood during
burning – a closed natural carbon dioxide cycle is produced. Conclusion:
Nature remains in a state of equilibrium as a result of burning wood. Ger-
many has regulated the sustainable management of forests by law. This
obligation has led to a growth in the volume of wood because the increase
in wood grown in forests is on average 40% greater than the volume of
firewood and timber used.
5.9.1 STORING WOOD
In general, it is recommended to store firewood for approx. 2-3 years, the
wood should be protected from dampness and well ventilated (e.g. under a
roof overhang on a side of the building protected from the weather). Wood
with moisture content < 25% will be achieved significantly quicker with
optimal storage. Therefore, you should store your firewood already chopped
because the bark can prevent the moisture escaping from the wood. You
should leave a distance the width of a hand between the logs for good
ventilation so that the air can circulate properly and the moisture escaping
from the wood can be taken away by the air. A distance to the floor of
approx. 20-30 cm should be maintained underneath the stack of wood.
Renewed absorption of moisture due to precipitation (e.g. rain or snow)
should be avoided. Storing wood in garages, under plastic sheets or in
poorly ventilated cellars is not recommended because the moisture present
in the wood cannot escape properly.
5.9.2 YOUR CONTRIBUTION TO ENVIRONMENTAL
PROTECTION
Whether your fireplace cassette burns in an environmentally friendly way is
dependent to a large degree on how it is operated and which fuel is used.
The following advice should help you to operate your fireplace cassette in
an environmentally friendly way:
• Do not use wood that has been stored for a long time because this wood
can lose its flammability and its calorific value reduces after extremely
long storage or insufficient ventilation.
• Adjust the volume of wood used to the relevant heating requirements.
You can check whether a clean and low-emission burning process is taking
place in your fireplace cassette as follows:
• The ash should be white. A darker colour indicates residual charcoal and
an incomplete burning process.
• The exhaust gas coming out of the chimney should be as clear as pos-
sible (the less visible the exhaust gas appears, the better the burning
process).
GB 28
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