1.12 BSB: Basic Principles
BSB requires the accumulator sensors F5 (1-4). These sensors are used to calculate the correct refuel amount. The
displayed fuel amount is dependent on the boiler operating status (“Boiler ON/OFF”).
Operating status “Boiler OFF”:
In “Boiler OFF” the refuel amount is only displayed, if the for AFO required fuel amount can be added. The time of the display
of the fuel amount depends on the “AFO runtime” - in this time the energy amount of the firing must be able to be dispensed
to the accumulator.
Operating status “Boiler ON”:
The refuel amount displays only after a completed AFO and no earlier than “one hour” before the calculated ending of
burning cycle (minimal smoke nuisance while refuelling), whenever the refuel capacity allows refuelling.
Opening the doors (refuelling) in “Boiler ON” is not recommended.
Recommendation: Do not refuel unless the “Refuel” light illuminates.
The controller considers basic data for calculating the refuel amount, such as fuel and boiler properties, as well as the
actual free capacity of the accumulator.
Therefore, highly efficient fuel consumption, high productivity and a high level of comfort are ensured.
To completely fill a 3000L accumulator, approx. 150 kWh are required.
1.13 BSB: Fuel Calculation without heating demand
Note: The combustion is carried out with rated power or SLA.
Without the outside temperature sensor or if the setting 5.04 BSB with heating d. – is “NO”, the
fuel amount is only calculated for the free accumulator capacity.
BSB Setup is as follows:
“Wood boiler” → “Settings” → BSB settings.
BSB without heating demand is meant for large accumulators / energy storages, if the heating
demand is not considered due to a high boiler output.
1.14 BSB: Fuel calculation with heating demand
Note: The combustion is carried out with rated power or SLA.
Function 5.04 BSB with heating d. can be deactivated.
In “Anti-freeze”, “Holiday” and “reduced”, the fuel amount is calculated without the heating
demand.
Setup is as follows:
“Wood boiler” → “Settings” → “BSB settings” → 5.04 BSB with heating d.
If “NO” is selected, BSB functions as described in chap. 1.13.
Use: With existing heating demand the refuel amount is increased (high comfort).
BSB with heating demand is the ideal standard application.
Effect: With the outside temperature sensor, BSB considers the fuel amount for the accumulator loading
as well as the amount of fuel (amount of energy), which can be dispensed to the heating system
(heating demand) during the burning cycle.
1.15 BSB: ABO – Burning Demand Optimisation
Effect: ABO is not available for all boiler types.
ABO requires BSB with heating demand.
The combustion is carried out with rated power or SLA or modulating.
Setup is as follows:
“Wood boiler” → “Settings” → “BSB settings” → 5.05 ABO.
If “NO” is selected, BSB functions as described in chap. 1.13.
If the fuel amount was calculated for a combustion with ABO, ABO displays after the text display
“Close door(s)”.
Use: At a high heating demand, a larger amount of fuel may be added.
At a lower heating demand ABO is not used - this would only increase the boiler operating hours,
but not the comfort.
Effect: BSB considers the heating demand for the following combustion period at the smallest boiler
output, which increases the amount of energy dispensed to the heating system – resulting in an
increased refuel amount. ABO runs automatically, if the heating demand is bigger than half of the
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