IT
ENG
57
CHARACTERISTICS OF THE PELLETS
2.4.7
Description
Unit of measurement
Value
Size of the pellets
mm
6 – 8
Recommended net calorific value
MJ/kg
>17.2
kWh/kg
>4.7
Class (ENplus)
ENplus-A1
Pellet category
A, AB, B*
Ash residue
%
See Table 2
Humidity
%
Max. 8 – 10%
Properties recommended for
Table 1
wood pellets
* The automatic pellet burner is designed to use wood pellets with the properties described in the ENplus reference standard. As an alternative, ONLY
FOR A LIMITED NUMBER OF HOURS, it is possible to use pellets that do not comply with the requested class. In this case the fuel, being of lower
quality, will generate a high ash residue, which will result in the need for more frequent cleaning of the burner grille and the heat exchanger walls.
Pellet category
A
d
DU
A
A
d
≤
0.6%
DU
≥
97.0%
AB
A
d
≤
0.6%
DU
≥
97.0%
B
0.6% < A
d
≤
1.0%
DU
≥
97.0%
BC
0.6% < A
d
≤
1.0%
DU
≥
97.0%
C
1.0% < A
d
≤
2.0%
DU
≥
97.0%
CD
1.0% < A
d
≤
2.0%
DU
≥
97.0%
D
2.0% < A
d
≤
3.0%
DU
≥
97.0%
DE
2.0% < A
d
≤
3.0%
DU
≥
97.0%
E
A
d
> 3.0%
DU
≥
97.0%
EF
A
d
> 3.0%
DU
< 97.0%
Classification of the pellets, according to their physical properties
Table 2
A
d
– ash residue [%]
DU – mechanical resistance [%]
