5
Fuel
5.1
Fuel types
Warning:
Do not use coal, anthracite, coal briquettes, liquid fuel or gel fuel. The
appliance is not designed for these fuels. Use of these fuels is dangerous and
can lead to bodily harm and to serious damage to the appliance.
Suitable fuels are:
• Hard wood (example: birch, beech, oak, ash).
• Soft wood (example: spruce, pine, poplar).
• Wood briquettes without binder.
Before use, wood must dry for minimum 2 years when freshly chopped. Kiln-dried wood
must dry for an extra half year. Dried wood logs must have a moisture content of 10 - 20
%.
Unsuitable fuels are:
• Painted wood.
• Impregnated wood.
• MDF, chipboard.
• Any kind of combustible waste.
• Paraffin impregnated compressed wood logs
• Freshly chopped wood
• Coal, anthracite and other bituminous fuels
• Lignite , peat
Using unsuitable fuels cause excess smoke, black glass, combustible deposits in the
chimney and can damage the appliance.
5.2
Fuel amount
Load the appliance with the amount of fuel as listed hereunder. Put the load as one layer
on the floor of the combustion chamber. For the amount of fuel for the first load see
chapter
.
Table 1: Recommended amount of fuel
Wood logs
Wood briquettes
Amount
2 pieces
2 pieces
Weight
Approximately 0.7 kg per piece Approximately 0.5 kg per piece
Length
Approximately 15 cm
Approximately 15 cm
The above listed amount burns for approximately 45 minutes. This time can be different,
dependent on the chimney draught and the position of the combustion air valve.
The amount of fuel specified here should not be exceeded, overloading can cause
excess smoke.
Fuel
Unilux-7 40
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