42 Wilo SE 06/2020
en
7 Commissioning
Commissioning only by qualified technicians.
7.1 Venting
• Fill and vent the system correctly.
If the pump does not vent automatically:
• Activate the pump venting function via the operating
button: press and hold for 3 seconds, then release.
The pump venting function is initiated and
lasts 10 minutes.
The top and bottom LED rows flash in turn at 1 second
intervals.
• To cancel, press and hold the operating button
for 3 seconds.
CAUTION!
The connection of mains voltage (230 V AC) to the com
-
munication pins (iPWM) will destroy the product.
• At the PWM input, the maximum voltage is 24 V
pulsed input voltage.
iPWM 2
iPWM 1
sec
3
NOTICE
After venting, the LED display shows the previ
-
ously set values of the pump.
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