6
1.
Important Information for System Operators
Fuel Property
General requirements
Device specific - Mandatory
Heating Value
Ash Fusion
Diameter
7737 – 8511 BTU/lb
2192 °F
0.24 inches
5.0 – 5.5 kWh/kg
1200 °C
6 mm
Fuel Property
PFI Super Premium
Normative Information
Bulk Density, lb./cubic foot
Pellet Durability Index
Fines, % (at the mill gate)
Inorganic Ash, %
Length, % greater than 1.50 inches / 38.1 mm
Moisture, %
Chloride, ppm
40.0 - 46.0
≥ 96.5
≤ 0.50
≤ 0.05
≤ 1
≤ 8.0
≤ 300
Store pellets in a dry, safe place. Follow local and building codes when storing pellets.
The use of lower quality pellets will lead to malfunctions, increasing the need for service. It will also lead to the
loss of warranty.
The use of any fuel other than listed above may result in fire and explosion!
Consequences of quality fluctuations:
Pellets are 100% unprocessed wood, so minor fluctuations in fuel quality are normal and reflect the natural origins
of the material. These quality fluctuations affect the level of dirt, the ash content and therefore the cleaning intervals.
A reduction in cleaning intervals due to fluctuations in pellet quality cannot be remedied as part of a repair under
guarantee!
The use of lower quality pellets will lead to malfunctions, increasing the need for service. It will also lead to the
loss of warranty. Make your pellet supplier aware of these quality requirements before ordering and seek con-
firmation upon delivery.
1.4 Fuel
The boilers/heaters are designed to burn the following fuels:
Pellets according to ÖNORM M7135 or DINplus, or Super Premium Wood Pellets listed in the Pellets Fuel Insti-
tute (PFI) Standard.
Significant criteria based on the standards are as follows:
Diameter 0.24 in / 6 mm
Length: 5-40 mm / 0.20-1.6 in.
Smooth surface
Bulk density: 600-700 kg/m
3
(37.5-43.7 lb/ft
3
)
Residual moisture content max. 10 %
Energy content 16,3 – 19 MJ/kg = 4,6 – 5,3 kWh/kg
Ash content max. 0.7 % (with 1022 °C)
Abraded particles max. 2.5 %
Chemical/synthetic binding agents are strictly prohibited
No impurities from varnish or paint residues, etc.
This boiler/heater is equipped for the following type of fuel only and must not be used with any fuel other than
listed below:
> Super Premium Wood Pellets listed in the Pellets Fuel Institute (PFI) Standard.
> Wood Pellets listed in the ÖNORM M7135 standard.
> Wood Pellets listed in the DINplus standard.
These pellets must fulfill following requirements:
