HDG M299, Operation Manual

Page: 29 / 176

©
HDG Bavaria GmbH 07/2008 HDG M299/300/350/400 - Version 1 - en
3 Mode of operation – Fuel quality requirements
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ECOMMENDED FUEL
Fuel which is suitable for the HDG M299/300/350/400 heating
system includes wood chips, shavings and wood pellets. In order to
uphold the emission values specified under German law (1.
BImSchV), all fuel requirements, e.g. size, water content, ash content,
must be met.
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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 calorific
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 M299/300/350/400 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
efficiency, increased fuel consumption and greater wear and tear on
the heating system may then result. Fuels with a higher water
content are not suitable for burning. The maximum permissible ash
content is 1.5% by weight (A1.5).
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OOD PELLETS
For operation of the heating system with wood pellets, HDG Bavaria
recommends wood pellets from category A1 according to DIN EN
14961-2 or, alternatively, with the certificate “ENplus” or “DINplus”.
Pay particular attention to the fuel quality, both when ordering and
at delivery.
Important!
If there is a significant change of fuel, the system must be reset
accordingly and checked for emissions by authorised specialists.