Thermal Quantity Balance (Calculation); Non-Modulating Circulating Pump (Without Flowmeter); Modulating Circulating Pump (With Flowmeter); Note - Ferroli 0XBM2CX0 Instructions Pour L'installation Et L'entretien

10. THERMAL QUANTITY BALANCE (CALCULATION)

The regulator performs the accumulated energy calculation only if the Solar
Circulating Pump is working: the value is then displayed through the para-
meter BIL in the History menu, see section on Service Menu.
ATTENTION: This function depends on the value of parameter P15 Thermal
Quantity Balance (Installer parameter, default value equal to
0=Off) which must be set to 1.

NON-MODULATING CIRCULATING PUMP (WITHOUT FLOWMETER)

The value of the following parameters must be correctly set:
- P16 Solar circuit max. fl ow rate (l/min)
- P18 Antifreeze liquid protection rating (%)
- P23 Solar circulating pump operation (0=On/Off).
Accumulated energy (kWh) =
Value P16 * 60 x (deltaT: S3 – S4) x 1,163 x ((100-Value P18)/100) / 1000

MODULATING CIRCULATING PUMP (WITH FLOWMETER)

The value of the following parameters must be correctly set:
- P18 Antifreeze liquid protection rating (%)
- P23 Solar Circulating Pump operation (1 = Modulating)
- P25 Flowmeter type selection.
Accumulated energy (kWh) =
Value measured by Flowmeter *60 x (delta T:S3-S4) x 1,163 x ((100-va-
lueP18)/100)/1000

NOTE

The regulator performs the instantaneous calculation every second and
updates the value of parameter BIL every time the accumulated energy
increases by 1kW.
In case of a power failure, the Regulator does not lose the accumulated
energy calculation: the data is saved once every 10 minutes, therefore when
the power is restored and the Solar Circulating Pump restarts, the calculation
can begin again without loss of data.
Multifunction Solar Column
Cod. 3540V701 - Rev. 01 - 04/2014
43