Bentone B40 MF - Examples of Basic Setting B45-2 MF

25
Bentone B40 MF/B45-2 MF
For installers
The nozzle effect is calculated for two-stage burners with two nozzles
(separately for each nozzle).
Nozzle selection in accordance with the table. (See technical data)
Nozzle selection is based on the selected pump pressure and the desired effect.
According to the nozzle table, this provides the following nozzle.
Burner output Max. 500 kW
Min. 200 kW
Estimated nozzle output min. load 200 kW/10 kWh/kg*= 20 kg/h
Estimated nozzle output max. load (500kW-200 kW)/10 kWh/kg*= 30 kg/h
Selected pump pressure 25 bar
Nozzle min. load 3.50 gph
Nozzle max. load 5.00 gph
Power in min. load 20.61 kg/h => 20.61 kg/h x 10 kWh/kg*
= 206 kW
Power in max. load 20.61 kg/h + 29.44 kg/h => 50.05 kg/h x
10 kWh/kg* = 501 kW
* Taken from the fuel in accordance with standard DIN 51605:2010-10
Basic settings
The setting value for maximum load 500 kW and minimum load 200 kW
according to the basic settings tables. For the correct procedure when
implementing settings, see 4.7 Nozzle assembly control, brake plate B45-2
MF and 4.9 Air setting B45-2 MF
Damper motor 2-stage (see technical data ...)
Effects and nozzle selection from example
Nozzle assembly Stage 2 = 25
Damper motor Closed = 0° Blue cam
Min. load = 45° Orange cam
MV max. load = 60° Black cam
Max. load = 90° Red cam
Black cam for MV (solenoid valve) max. load shall be placed between the
cams for min. and max. load. The positions of MV max. load are determined
by the boiler's characteristics when switching between stages. By default,
the black cam is placed between the orange and red cams.
Basic settings should only be seen as setting values to get burner to start
and establish a flame. Once the burner has started and established a flame,
it will be necessary to adjust the settings so that they are adapted to the
installation in question and the fuel used at the time.
4.2 Examples of basic setting B45-2 MF