Start-up | 7
M1820921_en | Installation instructions Dual fuel boiler SP Dual compact
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7.2 Initial startup
7.2.1 Permitted fuels
Wood pellets
Wood pellets made from natural wood with a diameter of 6 mm
Note on standards
EU:
Fuel acc. to EN ISO 17225 - Part 2: Wood pellets class A1 / D06
and/or:
EN
plus
/ DIN
plus
certification scheme
General note:
Before refilling the store, check for pellet dust and clean if necessary.
TIP:
Fit the Froling PST pellet deduster for separating the dust particles contained in the
return air
Firewood
Firewood up to max. 55 cm long.
Water content
Water content (w) greater than 15% (equivalent to wood moisture u > 17%)
Water content (w) less than 25% (equivalent to wood moisture u < 33%)
Note on standards
EU:
Fuel as per EN ISO 17225 – Part 5: Firewood class A2 / D15 L50
Additional for
Germany:
Fuel class 4 (§3 of the First Federal Emissions Protection Ordinance
(BimSchV) in the last amended version)
Tips for
storing wood
▪ Use wind-exposed areas where possible for storage (e.g. store at edge of forest instead of in
forest)
▪ Walls of buildings facing the sun are ideal
▪ Create a dry underlay, where possible with air access (line with round timber, pallets, etc.)
▪ stack split wood and store in such a way that it is protected from the elements
▪ If possible, stock fuel for the day in a warm place (e.g. in boiler room) (pre-heats the fuel!)
