Safety | 2
B1510622_en | Operating instructions Firewood boiler S4 Turbo
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2.4 Permitted uses
The Froling Firewood boiler S4 Turbo is designed solely for heating domestic water. Only
the fuels specified in the "Permitted fuels" section may be used.
The unit should only be operated when it is in full working order. It must be operated in
accordance with the instructions, observing safety precautions, and you should ensure
you are aware of the potential hazards. The inspection and cleaning intervals in the
operating instructions must be observed. Ensure that any faults which might impair safety
are rectified immediately.
The manufacturer or supplier is not liable for any damage resulting from non-permitted
uses.
Only original spare parts or specific alternative spare parts authorised by the
manufacturer may be used. Any kind of change or modification made to the product will
invalidate the manufacturer’s conformity with the applicable guideline(s). In such cases,
the product will need to undergo new hazard evaluation procedures by the operator. The
operator will then be fully responsible for the declaration of conformity according to the
valid guideline(s) for the product and will need to issue a corresponding declaration for
the device. This person will then assume all of the rights and responsibilities of a
manufacturer.
2.4.1 Permitted fuels
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!)
