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34 Installation and operating instructions • Wilo-Control SC2.0-Booster • Ed.01/2023-09
Fig.47: Settings→Additional settings→Con-
stant speed 2/2 menu item
Control of one or all pumps can be selected.
With several pumps, the control follows the “Vario” scheme.
Fig.48: Settings→Additional settings→Zero-
flow test 1/3 menu item
“Zero-flow test” is used to switch off the system if the switch-off pressure is not reached,
only one pump is still running and there is no more reduction.
The function can be activated.
The interval defines the time between two zero-flow tests if the 1st test did not cause the
unit to deactivate.
Fig.49: Settings→Additional settings→Zero-
flow test 2/3 menu item
“Duration” describes the maximum length of time the system needs to reach the changed
pressure setpoint for the zero flow.
“Pressure change” is used to calculate the pressure setpoint for the zero-flow test.
“Bandwidth” defines a pressure range to keep the current pressure at a constant pressure for
the test.
If the pressure is kept within this range, the pressure is defined as constant.
Fig.50: Settings→Additional settings→Zero-
flow test 3/3 menu item
Sets the lower limit of the speed of the base-load pump at which a zero-flow test is carried
out.
Limit value for selecting the increasing or decreasing zero-flow test.
If the speed of the base-load pump is higher, the pressure is decreased, otherwise the in-
creasing zero-flow test.
Fig.51: Settings→Additional settings→Tube
filling function 1/2 menu item
The “tube filling function” (pipe filling function) is used to safely fill the installation with the
aim of reducing pressure surges.
Tube filling function is active during the commissioning and restart of the unit.
The pipe system can be filled with one or all pumps.
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