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Fuel
The stove has been tested in accordance with DS/EN 13229:2001, DS/EN 13229:2001/
A1:2003, DS/EN 13229:2001/A2:2004 and NS 3058/3059 for the stoking of split dry
birch and approved for hardwood/softwood. The wood should have a moisture content
of 15-20%, and a max. length of the combustion chamber width minus 50-60 mm.
Lighting a fire with wood emits soot, environmental pollution and poor fuel economy.
Freshly cut wood contains approx. 60-70% water, and is completely unsuitable for
stoking.
You should allow for newly cut wood to be stacked for drying for 2 years.
Wood with a diameter of more than 100 mm should be split. Regardless of the size of
the wood, it should always have at least one surface area without bark.
It is not permissible to burn lacquered, laminated or impregnated wood, wood
with a synthetic surface, painted refuse wood, chipboard, plywood, domestic
waste, paper briquettes and pit coal, because it could cause malodorous fumes
that may be poisonous.
The burning of the above and of amounts larger than those recommended,
subjects the stove to a larger amount of heat, resulting in a higher chimney tempera-
ture and lower efficiency. This could cause damage to the stove and chimney and make
the warranty void.
The calorific value of the wood is very much connected to the moisture content of the
wood. Moist firewood has a low calorific value. The more water the wood contains, the
more energy is used to evaporate it and this energy is wasted.
ONLY USE RECOMMENDED FUELS
The following table shows the calorific value of different types of wood which have
been stored for 2 years and have a residual moisture content of 15-17%.
Wood type / Kg dry wood / wood per. m
Hornbeam 640 110%
Beech and oak 580 100%
Ash 570 98%
Maple 540 93%
Birch 510 88%
Pine 480 83%
Fir 390 67%
Poplar 380 65%
1 kg of wood yields the same thermal energy irrespective of wood type.
1 kg beech merely takes up less space than 1 kg of fir.
16
attika
RAIS/
- User manual for RAIS 2-1
Compared to beech/oak
3
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