Pellet burner GP xx sc 8
With the adoption of the new standard for wood pellets (EN ISO 17225-2) in 2014 there are
introduced a new classes for wood pellets used in domestic heating boilers (Table 3.3.).
Table 3.3. Standard for wood pellets EN ISO 17225-2:2014.
Wood pellets classification, developed and applied by the manufacture company, depending
on their physical properties is presented in Table 3.4.
Table 3.4. Wood pellets classification, developed and applied by the manufacture company,
depending on their physical properties.
PELLETS CATEGORY
A
D
DU
A
%
6
.
0
d
A
%
0
.
97
DU
AB
%
6
.
0
d
A
%
0
.
97
DU
B
%
0
.
1
6
.
0
d
A
%
0
.
97
DU
BC
%
0
.
1
6
.
0
d
A
%
0
.
97
DU
C
%
0
.
2
%
0
.
1
d
A
%
0
.
97
DU
CD
%
0
.
2
%
0
.
1
d
A
%
0
.
97
DU
D
%
0
.
3
%
0
.
2
d
A
%
0
.
97
DU
DE
%
0
.
3
%
0
.
2
d
A
%
0
.
97
DU
E
%
0
.
3
d
A
%
0
.
97
DU
EF
%
0
.
3
d
A
%
0
.
97
DU
where:
A
d
- ash content of dry mass, %;
DU - mechanical resistance, %.
Parameter
Dimension
Class A1
Class A2
Class B
Length (L)
mm
3,15 ≤ L≤ 40
3,15 ≤ L≤ 40 3,15 ≤ L≤ 40
Diameter (D)
mm
6±1
8±1
6±1
8±1
6±1
8±1
Moisture (М)
%
< 10
< 10
< 10
Ash (A), dry
%
< 0,7
< 1,2
< 2,0
Buck density (BD)
kg/m
3
> 600
> 600
> 600
Mechanical durability (DU)
%
> 97.5
> 97.5
> 96.5
Net caloricity (Q)
MJ/kg
kWh/kg
> 16,5
> 4.6
> 16,5
> 4.6
> 16,5
> 4.6
Chlorine Cl
%
< 0,02
< 0,02
< 0,03
Nitrogen (N)
%
< 0,3
< 0,5
< 1,0
Sulphur (S)
%
< 0,04
< 0,05
< 0,05
Arsenic (As)
mg/kg
< 1
< 1
< 1
Cadmium (Cd)
mg/kg
< 0.5
< 0.5
< 0.5
Chromium (Cr)
mg/kg
< 10
< 10
< 10
Copper (Cu)
mg/kg
< 10
< 10
< 10
Lead (Pb)
mg/kg
< 10
< 10
< 10
Mercury (Hg)
mg/kg
< 0.1
< 0.1
< 0.1
Nickel (Ni)
mg/kg
< 10
< 10
< 10
Zinc (Zn)
mg/kg
< 100
< 100
< 100
