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4. FUEL
The FERLUX pellet boiler has been designed to burn
in the UNE-EN ISO 17225:2014 Solid Biofuels Standard and in the ÖNORM M 7135 standard.
4.1 WHAT IS PELLET?
The pellet is a combustible material that is manufactured by pressing dry natural sawdust, it is easy to be compacted and
lignin itself is a binder, so no glue or other substance is needed. This process gives it a shiny appearance as if it were
varnished and makes it denser.
They are very small cylinders of a few millimeters in diameter, their humidity level is very low, and they also require little
storage space (to produce the same heat, the stored pellet occupies about three times less in volume than firewood).
4.2 PELLET CHARACTERISTICS
In the market there are several types of pellets which change according to the quality, characteristics of elaboration and
types of wood used.
FERLUX recommends burning wood pellets with DIN plus certificate (marked obtained according to Austrian standard
Önorm
M 7135) or ENplus (marked obtained according to UNE- EN ISO 17225-2:2004).
DINplus is a voluntary mark issued by an institute certifying that the pellet complies with the Austrian standard Önorm
M7135, one of the most restrictive standards on the market.
ENplus is also issued by an institute that certifies that the pellet complies with the EN-14961-2 standard.
Main requirements of these regulations mentioned above:
Characteristics of the pellet according to DINplus and ENplus standard
Requirement
Diameter
Longitude
Calorific value inferior
Humidity
Ashes
A pellet certified under either of these two standards is the best guarantee for the proper functioning of the boiler
PELLET FERLUX.
If the pellet is not properly marked, the corresponding certificate should be requested.
PELLETS SHOULD NOT BE >45 mm AND ONLY 1% MAY BE LONGER THAN 40 mm.
In the event of an unidentified
been able to change, we can apply a series of criteria to know if it is suitable or not for its use, in which we will
follow the below tips:
•
DO NOT USE pellets of dimensions other than those indicated in the table above.
•
DO NOT USE pellets that show granules of colors not typical of wood, or excessively dark.
•
DO NOT USE wet pellet.
•
DO NOT USE pellets containing mixed sawdust powder, resins or chemicals, binders, or additives.
Unit of measurement
mm
mm
MJ/kg (b.h)
Q ≥ 18 (MJ/kg en b.s.)
% (b.h)
% (b.s)
pellet or that due to various circumstances we consider that the characteristics have
wood
pellets that meet the requirements established
DINplus
4 ≤ D < 10
≤ 5 x D
≤ 0,5
12
ENplus A1
ENplus A2
D06: 6 ± 1
D08: 8 ± 1
3,15 ≤ L ≤ 40
16,5 ≤ Q ≤ 19
16,3 ≤ Q ≤ 19
≤ 10
≤ 0,7
≤ 1,5
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