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1.5 ... 7.5 kW:
1
2
3
4
5
8
7
6
11 ... 22 kW:
1 8
6 4
Fig. 1: Electronic module, overview
4.2.1
Control modes
10
Product description
The continuous adjustment of the hydraulic output follows the changing power de-
mand of the system. Changing requirements arise particularly when thermostatic valves
or mixers are used.
The basic advantages of the electronic control system are:
ƒ
Energy savings and reduced operating costs at the same time
ƒ
Reduced number of differential pressure valves required
ƒ
Reduction of flow noise
ƒ
Pump can be adapted to changing operating requirements
1
2
3
4
5
6
7
8
5
2
3
7
NOTICE
For details of setting the control mode and associated parameters, see the "Opera-
tion" and "Control mode" chapters.
Selectable control modes are:
Constant differential pressure ( > p-c)
The control system keeps the delivery head constant at the adjusted differential pres-
sure setpoint H
maximum characteristic curve is reached.
Cover attachment points
Operating button
Infrared window
Control terminals
Display
DIP switch
Power terminals (mains terminals)
Interface for IF module
. Control is independent of the volume flow and is applied until the
S
WILO SE 2020-10
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