en Commissioning
18 WILO SE 2021-12
The control keeps the set delivery head constant, independent of
the delivered volume flow.
Recommended for underfloor heating. Or for large-sized pipes, all
applications without a variable pipe network curve (e.g. storage
charge pumps) or single-pipe heating systems with radiators.
Speed constant (n-const)
The pump runs uncontrolled in three prescribed fixed speed
stages.
Recommended for systems with fixed system resistance requiring
a constant volume flow.
Set setpoint
Corresponding setpoints can be set for the control modes (not for Dynamic Adapt plus).
Confirm and set selected value.
Control mode Possible setpoints
Setpoint Δp-v Delivery head: H set = 0.5 ... 4, 6, 8m (depending on the type)
Setpoint Δp-c Delivery head: H set = 0.5 ... 4, 6, 8m (depending on the type)
Setpoint n-const Speed: speed I, speed II, speed III
Press (2seconds): the display shows the corresponding home screen with the setpoint adjusted.
Night set back
When night set back is enabled, the pump follows the night set back of the heating system with electronic
evaluation of a temperature sensor. It then switches to minimum speed. When the heat generator heats up
again, the pump switches back to the pre-set control stage. When the night setback is used, the pump must
be installed in the feed of the heating system.
The setback operation can be activated (ON) or deactivated (OFF).
The setback operation can be recognised via an icon on the home screen (see “Active influences” table).
Factory setting: Night set back OFF
Mode for pressure-dependent valves
If pressure-independent thermostatic valves are installed in the system, it is important to maintain a minimum
pressure at these valves. The activated mode for pressure-independent valves ensures this minimum pressure
even at a low volume flow.
The mode can be activated (ON) or deactivated (OFF).
Factory setting: pressure-indep. valve OFF
To Next Page
Loading...
Need help?
General
