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2-FUEL
Technical Dept. - All rights reserved - Reproduction is prohibited
The instructions contained in this chapter explicitly refer to the regulations of the Italian installation Standard UNI 10683. In any case,
always comply with the regulations in force in the country of installation.
PELLETS
Wood pellets are manufactured by hot-extruding compressed sawdust which is produced during the working of natural dried wood. The
compactness of the material is guaranteed by the lignin contained in the wood itself and allows pellets to be produced without glue or
binders.
The market oers dierent types of pellets with characteristics that vary according to the wood mixtures used. The diameter varies
between 6 and 8 mm, with a standard length ranging from 5 to 30 mm. A good quality pellet has a density of between 600 and 750 or
more kg/metres cubed and a water content that accounts for 5 to 8% of its weight.
Pellets have technical advantages besides being an ecological fuel, as the wood residue is used completely, thereby achieving cleaner
combustion than that of fossil fuels.
While good-quality wood has a caloric value of 4.4 kW/kg (15% moisture, after about 18 months of seasoning), whereas that of pellets
is around 4.9 kW/kg. To ensure good combustion, the pellets must be stored in a dry place and protected from dirt. Pellets are usually
supplied in 15 kg bags, therefore, storing them is very convenient.
Good quality pellets guarantee good combustion, thereby decreasing harmful emissions into the atmosphere.
The poorer the quality of the fuel, the more often the internal parts of the brazier and combustion chamber must
be cleaned.
The main quality certications for pellets currently available on the European market guarantee that the fuel complies with class A1/A2
according to EN14961-2. An example of these certications are the ENPlus, DINplus, Ö-Norm M7135, and they guarantee that they are
followed according to these characteristics:
• caloric value: 4,6 ÷ 5.3 kWh/kg.
• Water content: max 10% of weight.
• Percentage of ashes: max 1.5% of weight.
• Diameter: 5 ÷ 6 mm.
• Length: max 40 mm.
• Content: 100% untreated wood without the addition of binding substances (max 5% bark).
• Packaging: in sacks made from ecologically compatible or bio-degradable material.
The company strongly recommends using certied fuel for its products (ENplus, DINplus, Ö-Norm M7135).
Poor quality pellets or others that do not comply with the characteristics specied previously may compromise the
operation of your product and can therefore make the guarantee and product liability invalid.
15 Kg BAG OF FUEL
