Fuels Permitted Under Certain Conditions - Fröling SP Dual compact Installation Instructions Manual

7 | Start-up
Storage time dependent upon water content

7.2.2 Fuels permitted under certain conditions

Wood briquettes
Note on standards
Notes on
use
76
Storage in heated and ventilated room
(approx. 20°C)
Outdoor storage (protected from elements,
exposed to wind)
Freshly cut wood has an approximate water content of 50 to 60%. As the above table
shows, the water content of the firewood decreases the longer the wood is stored
depending on how dry and warm the storage location is. The ideal water content of
firewood is between 15 and 25%. If the water content falls below 15%, we recommend
you adjust the combustion control to the fuel.
Wood briquettes for non-industrial use with a diameter of 5-10 cm and 5-50 cm long.
EU: Fuel as per EN ISO 17225 - Part 3:
wood briquettes class B / D100 L500 Form 1 - 3
Additional for
Germany: Fuel class 5a (§3 of the First Federal Emissions Protection Ordinance
(BImSchV) - applicable version)
▪ When burning wood briquettes use the settings for extremely dry fuel
▪ Wood briquettes must be heated up with firewood as per EN ISO 17225-5
(at least two layers of firewood under the wood briquettes)
▪ The fuel loading chamber must not be filled more than 3/4 full, as the wood briquettes expand
during combustion
▪ Even when using the settings for dry fuel, burning wood briquettes can cause combustion
problems. In such cases, repairs must be carried out by qualified staff. Please contact Froling
customer services or your installer.
Wood type
Soft wood (e.g.
spruce)
Hardwood (e.g.
beech)
Soft wood (e.g.
spruce)
Hardwood (e.g.
beech)
M1820921_en | Installation instructions Dual fuel boiler SP Dual compact
Water content
15 – 25% less than 15
%
approx. from 1 year
6 months
1 – 1.5 years from 2 years
2 summers from 2 years
3 summers from 3 years