3.2 Pellets that can be used in boilers
The boiler is designed exclusively for burning wood pellets with a
diameter of 6 mm and a length of 10-30 mm.
3.2.1 What is pellet
Pellet is obtained from wood, if it is
possible, from the core of the trunk with
the lowest proportion of bark. The bark
contains the most moisture, dust and
impurities that wood gets during growth,
therefore has a lower caloric value than
the core, and another problem is that it
leaves the sediment when burning. Ideal
wood for pellet production is one that does
not burn too long or too short and creates
a long-lasting glow. Pellets are made from
sawdust waste (typically in a ratio of 20-40% softwood + 60-80% hardwood), in
special machine under high pressure which leads to thickening. It is not allowed to
use any additives or glue during the pellet. production The pellet contains a minimal
amount of moisture and ash, and has a maximum energy value for the type of
wood from which they are produced.
3.2.2 Recommended wood pellets and standars
Pellets quality arises from Standard pellets C1 to EN 303-5: 2012 Table 7; Water
content less than 12% according to DIN 51731 - HP 5, DINplus certification program
and ÖNORM M 7135 - HP 1 or EN PLUS - UNI EN 14961 - 2 (UNI EN ISO 17225-2)
class A1 or A2, 6 mm diameter, length 10-30 mm.
Particular attention should be paid to the quality of wood pellets. Low-
grade pellets can cause malfunction of the stove.
3.2.3 Unallowed fuels
The pellets not consisting the standards mentioned in this manual is not allowed
to burn in a stove. Using a bad quality pellet or any other material can lead to
damaging your stoves's important functions and may result in the termination of
the warranty and associated liability.
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