3 Mode of operation – Fuel quality requirements
22
2nd stage). In particular, all fuel requirements concerning size, water
content and ash content must be met. Without the use of secondary
measures (filter technology), only fuels of property class A1 are
suitable for this in each case.
HDG recommends log wood with a length of L50 (50 cm), a
maximum diameter of D15 (max. 15 cm) and a water content of M20
(20%). For kindling, we recommend log wood with a diameter of D5
(2–5 cm).
PERMITTED FUEL IN ACCORDANCE WITH 1ST FEDERAL EMISSION
CONTROL ORDINANCE (GERMANY)
Additional quality requirements apply in Germany independently of
the fuel specification in accordance with DIN EN ISO 17225. In
accordance with section 3 (1) of German law (1. BimSchV), the fuel
classes 4, 5, 6, and 7 may be used in the HDG F20-50 heating system.
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.
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