©
HDG Bavaria GmbH 07/2008
HDG Compact 99 - 200 - Version 1 - en
3 Mode of operation – Fuel quality requirements
29
•
A2/D06
The diameter of the pellets must be 6 mm +/- 1 mm. The length of
the pellets must measure between 31.5 mm and 40 mm. A maximum
of 1% by weight of the pellets may be longer than 45 mm. The water
content must be less than 10% (M10), the ash content must be less
than 1.5% by weight (A1.5).
R
ECOMMENDED
FUEL
Suitable as fuel for the heating system HDG Compact 99 - 200 are
wood chips, shavings and wood pellets. In order to uphold the emis-
sion values specified in BImSchV, all fuel requirements, e.g. size,
water content, ash content, must be fulfilled.
W
OOD
CHIPS
HDG Bavaria recommends wood chips with particle size P31.5. The
fuel should have as little water content as possible, with a 20% water
content (M20) being ideal. The drier the fuel, the higher the thermal
value and the better the burning that is achieved. High quality fuel
aids in energy conservation and maintains the operating safety of
your heating system. The optimal ash content is 1% by weight (A1.0).
For HDG Compact 99 - 200 heating systems, it is possible to use wood
fuel products of grain size P45 with a maximum water content of up
to 30 %. However, reduced nominal thermal power, reduced effici-
ency, increased fuel consumption and greater wear and tear on the
Standard
A1 wood pellets
A2 wood pellets
Length
3.15 - 40 mm
3.15 - 40 mm
Diameter Ø
D06: 6 mm +/-1 mm
D06: 6 mm +/-1 mm
Thermal value
16.5 - 19 mJ/kg or
4.6 - 5.3 kWh/kg
16.3 - 19 mJ/kg or
4.5 - 5.3 kWh/kg
Density (spec. gravity)
1.0 – 1.4 kg/dm
3
min. 1.12 kg/dm
3
Bulk weight
min. 600 kg/m
3
min. 600 kg/m
3
Water content
max. 10 %
max. 10%
Ash content
max. 0.7 %
max. 1.5%
Fine material
max. 1.0 %
max. 1.0 %
Sulphur content
max. 0.03 %
max. 0.03%
Nitrogen content
max. 0.3 %
max. 0.5%
Chlorine content
max. 0.02 %
max. 0.02%
Additive
max. 2.0 %
max. 2.0 %
Table 3/4 - Burning characteristics of wood pellets
