THE FUEL
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Chapter3
THE FUEL
Pellets are realised by subjecting wood shavings i.e. the rejects of pure wood (without paint) sawmill,
carpenter products and products from other activities connected to working and transforming wood, to
very high pressures.
This type of fuel is absolutely ecological as no glues are used to hold it together. In fact, the compactness
of the pellets is guaranteed through time by a natural substance that is found in wood: lignin.
As well as being an ecological fuel, as wood residues are made the most of, the pellet also has technical
advantages.
Pellet density is about 650 kg/m
3
and water content is equal to 8% of its weight. For this reason the pellet
does not have to be seasoned in order to obtain a su ciently adequate heat yield.
The pellet used must comply with the features described by the Standard:
Ö-Norm M 7135
DIN plus 51731
UNI CEN/TS 14961
Extra ame recommends the use of pellets with a diameter of 6mm with its products.
ATTENTION !
THE USE OF EXPIRED PELLETS OR ANY OTHER MATERIAL DAMAGES THE FUNCTIONS OF
YOUR PRODUCT AND CAN DETERMINE THE INVALIDITY OF THE WARRANTY AND THE
ANNEXED RESPONSIBILITY OF THE MANUFACTURER.
N.B. It is important to periodically check the residue pellet inside the tank to avoid it
nishing completely, which results in the boiler switching o .
WARNINGS
The use of expired pellets or any other unsuitable material can damage certain boiler components and
jeopardise its correct functioning: this can determine the invalidity of the warranty and the relative
responsibility of the manufacturer. Extra ame invites the user to use pellet in compliance with the described
features and the Standards in force.
gure 3.1
PELLET FEEDING
During rst product use, feed the
pellet inside the tank, as illustrated
in the gure, until completely full.
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