Fuel - Stropuva Pellet Technical Passport, Installation And Maintenance Manual

The boiler is designed to be used with a pellet burner which consumes 6–8 mm wood pellets. The table
below shows the requirements for the pellet quality. Using fuel that meets DIN 51731 or DIN PLUS or
adheres to EN-14961-2 norms, extends the pellet burner's lifecycle. The pellet storage room must be
dry and well ventilated. It is important that before filling the fuel container with pellets, their
temperature is equal to the temperature of the boiler room.
Wood pellets
Quality criteria
Diameter
Length
Density
Ash content
Humidity
Humidity upon delivery
Calorific value
Sulphur
Nitrogen
Chlorine
Dust collected
Compression
facilitators
Ash melting point
Arsenic
Lead
Cadmium
Chromium
Copper
Quicksilver
Zinc
Halogens
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
For more detailed information please refer to the pellet burner manual (attached)
6
TECHNICAL PASSPORT, INSTALLATION AND MAINTENANCE MANUAL

2.3 Fuel

Pellet quality requirements.
Unit of
measurement
mm
mm
kg/dm³
% <0,5(1);(7)
%
% Not specified
MJ/kg
%
%
%
%
%
- Not specified
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
Without water and dust
Not more than 20% of pellets which length 7,5 greater than diameter
DIN prohibits the use of accessories. This does not apply to small heating
Diameter tolerance ± 10 %
Dust levels of up to 0.8% are allowed, which may be naturally higher for
certain types of wood
Only natural additives from biomass are allowed
NORM
DIN plus
4≤d<10(6)
5 x D(3)
1,12
<10
>18(1) 17,5 – 19,5 (2)
<0,04(1)
<0,3(1)
<0,02(1)
<2,3
<2(8)
<0,08
<10
<0,5
<8
<5
<0,05
<100
<3
Dry weight
systems
Manufacturer's
warehouse
DIN 51731
4≤d<10(6)
<50
1,0-1,4
<1,50
<12
Not specified
<0,08
<0,3
<0,03
-
(4)
Not specified
<0,08
<10
<0,5
<8
<5
<0,05
<100
<3