Cera Divino Anleitung Seite 57

Suitable (approved) fuels, which type of wood is best?
CERA stoves are wood-burning stoves which can also normally be fuelled with lignite
briquettes. You can only achieve optimum combustion and environmentally-friendly heating if
you use natural wood in the form of logs.
A wood fire creates comfortable and cosy heat. Please follow the recommendations below
closely for your own comfort and to protect the environment.
Maximum length of logs:
Maximum cross-section (diameter) of logs:
Place logs as follows depending on rated heat output:
max. 2 logs per fuelling action with
Firewood reaches a residual moisture level of between 15% and 20% after storage over
around 2 years outdoors and if well-ventilated (only covered from above, no contact with
possibly moist ground if possible), and is then most suitable for burning.
If the residual moisture level is higher, the heating value is lower. If wood is burnt when wet,
the water first needs to be boiled out before the actual wood combustion can take place. In
addition to heating value losses, this results in the combustion chamber temperature
lowering, and this reduced temperature means that not all wood constituents can be fully
burned. Wood gases will be discharged out of the chimney unburnt, and will deposit
themselves as tar or soot in the chimney. This insulates the stove components which give off
heat, and also causes air pollution when it escapes into the atmosphere. All this means that
burning moist wood is not only uneconomic, but also environmentally polluting. On top of this,
your stove glass will become blacker much more quickly.
Wood is not a continuously combusting fuel which means that leaving the stove to burn
overnight with wood is not possible. If you try this, for example using lignite briquettes to
"keep the embers in overnight", you will be burning with too little oxygen and producing
polluting substances for the environment and the flue gas pipework in the exhaust gas. This
type of "heating" is forbidden!
Wood briquettes have a heating value of around 5.0 kWh/kg and a residual moisture level of
around 7%.
According to the German Federal Emission Control Act, it is forbidden to burn the following
"fuels" for heating / in stoves:
♦ wood which has been treated with preservatives or is moist
♦ sawdust, woodshavings, sanding dust; bark and chipboard waste, coal slack
♦ other wastes, paper and cardboard (except for small quantities for igniting) or straw
4 kW 6 kW
max. 1.2 kg max. 1.8 kg
Max. 2 fuellings within a 2 hour period
56
30 cm
10 cm
7 kW 8 kW
max. 2.1 kg max. 2.4 kg