TECHNICAL FEATURES AND DIMENSIONS
7
2.4.
Fuel
The ECOBIO series is designed for automatic function with solid fuel of biogenic or fossil nature,
with granulation up to 30mm and humidity up to 20%. The boiler is also able to be used on wood
or other solid fuels with manual feeding, without any modification.
This means different types of biomass fuels, such as pellet, agropellet, olive husks, fruit kernels,
cereals, granulated carbon. When the fuel used has characteristics that significantly vary from
nominal (i.e. carbon, cereals, agricultural residues), they must be used in combination with pellet
or agropellet at a 50:50 ratio. If you want to use solely carbon as fuel, please contact the
manufacturer.
The fuel with the best quality, concidering calorific power, ash content, humidity and
standartization, is wood pellet. The less quality of the fuel, the more fuel supply must be provided
to achieve the nominal power and of course the most the consumption and the ash remains.
The nominal characteristics of the boiler are calculated for use on wood pellet!
Fuel type
Calorific power Max diameter Max humidity Ash content
kWh/kg
mm
%
%
Pellet
4,8
6 – 8
<10
<1
Agropellet
4 – 4,2
6 – 10
<10
<5
Coal
5,3 – 6,5
3 – 25
<15
4 – 8
Lignite
1,6 – 3,8
3 – 25
<20
<10
Cereals (oat)
4,2
3 – 6
10 – 13
0,6
Wood chips
4,3
5 – 25
<20
4 - 6
Barks
2,6
5 – 25
<20
8 - 10
Wood
4 – 4,3
-
<20
4 - 8
Wood briquette
5,2
-
<10
<4
Table 1.
Characteristics of different types of fuels
Every type of biomass fuel contains a significant amount of humidity, which highly affects its
combustion behaviour and calorific value. Boiler output, efficiency and autonomy will significantly
diminish as the humidity increases. The nominal data presented in this manual are calculated for
humidity content 10%. Maximum allowable humidity content is 20%. If the fuel has bigger
humidity, the combustion will be highly imperfect, causing problems to the furnace and the feeder.
In order for the feeding and combustion system to function properly the maximum
allowed humidity of the fuel is 20%!
It is prohibited the use of explosive, inflammable materials, plastic, domestic
residues, etc.
It is prohibited to manually feed solid fuel in the boiler simultaneously with the
furnace function!
Use of cereals is allowed only in mix 50:50 with pellets!
Use of coke, hard coal, briquetted coal or brown coal is forbidden without
consulting the manufacturer!
