Reloading Intervals When Operating Without Storage Tank Or If The Storage Tank Is Too Small - Froling SP Dual compact Operating Instructions Manual

4 | Operating the system
Fuel table
Fill level in boiler
4.4.5 Reloading intervals when operating without storage tank or if the storage tank is
too small
30
The table below shows a selection of wood types with the corresponding energy content
depending on the water content:
Wood type
Spruce
Pine
Beech
Oak
The table below shows the relationship between fill level and weight. It compares beech
(example of hardwood) and spruce (example of soft wood) with a water content of
approx. 20%. Using our example above with beech, the fill level of an S1 Turbo 15 would,
therefore, be approximately two-thirds.
Fill level
3/3 Beech
Spruce
2/3 Beech
Spruce
1/3 Beech
Spruce
NOTICE
Feed based on output:
Only replenish the fuel if energy is needed!
r If too much fuel is loaded, the boiler drops below its minimum output limit and goes
over to "constant burn" operating status (blower fan switches off)
Ä The level of efficiency drops in constant burn mode, the emissions increase and
the boiler can tar up (pitch formation!)
Energy content with water content [kWh/kg]
w = 15%
4.3
4.3
4.1
4.1
B1500423_en | Operating instructions Dual fuel boiler SP Dual compact
w = 20%
4.0
4.0
3.8
3.8
Weight at fill level
S1 Turbo 15/20
approx. 28 kg
approx. 17 kg
approx. 19 kg
approx. 12 kg
approx. 9 kg
approx. 6 kg
w = 25%
3.7
3.7
3.5
3.5