9
Quality features of the pellets
The pellets, as foreseen by current Italian
legislation governing commodity features
of fuels must be produced exclusively with
untreated wood sawdust without other added
materials.
It is absolutely forbidden to use any solid or
liquid fuel other than pellets to feed the .it.
For best operation of the .it, it is recommended
to use pellets the quality of which is certified by
an authorised body.
The use of poor quality pellets can cause
.it malfunctioning and shall terminate the
warranty.
If the .it remains off for long periods of time,
the tank must be emptied from any residual
fuel.
Parameter
Diameter (D)
Length (L)
Water content (M)
Ashes (A) 3
2
Mechanical durability (DU)
Fine particles (< 3.15 mm)
Additives
Lower Calorific Value (Q)
Bulk density (BD)
Nitrogen (N)
Sulphur (S)
Chlorine (Cl)
Arsenic (As)
Cadmium (Cd)
Chromium (Cr)
Copper (Cu)
Lead (Pb)
Mercury (Hg)
Nickel (Ni)
Zinc (Zn)
Melting point of the ashes (DT)
3
M.U.
mm
mm
%dm
1
%dm
1
%us
%us
%dm
MJ/kg us
kg/m
3
%dm
%dm
%dm
%dm
%dm
%dm
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
°C
EN plus-A1
EN plus-A1
6 (
±
1)
31,5
≤
L
≤
40
≤
10
≤
10
≤
0.7
≤
1.5
≥
97.5
≥
97.5
< 1
< 1
≤
2
≤
2
16.5
≤
Q
≤
19 16.3
≤
Q
≤
19
≥
600
≥
600
≤
0.3
≤
0.5
≤
0.03
≤
0.03
≤
0.02
≤
0.02
< 1
< 1
≤
0.5
≤
0.5
≤
10
≤
10
≤
10
≤
10
≤
10
≤
10
≤
10
≤
10
≤
10
≤
10
≤
100
≤
100
≥
1200
≥
1100
1) us = unaltered state, dm = dry matter
2) Determination at 550°C
3) In this case, the ashes must be produced at 815°C
