14
WILO SE 03/2021
en
iPWM GT mode (Heating and geothermal):
In iPWM GT mode, the pump speed is controlled accord
-
ing to the iPWM input signal.
Behaviour in the event of a cable break:
If the signal cable is separated from the pump, e.g. due
to a cable break, the pump accelerates to maximum
speed.
iPWM signal input [%]
< 5:
Pump runs at maximum speed
5-85:
The speed of the pump decreases linearly
from n
max
to n
min
85-93: Pump runs at minimum speed (operation)
85-88: Pump runs at minimum speed (starting)
93-100: Pump stops (standby)
iPWM ST mode (Solar):
In iPWM ST mode, the pump speed is controlled accord
-
ing to the iPWM input signal.
Behaviour in the event of a cable break:
If the signal cable is separated from the pump, e.g. due
to a cable break, the pump stops.
iPWM signal input [%]
0-7:
Pump stops (standby)
7-15:
Pump runs at minimum speed (operation)
12-15: Pump runs at minimum speed (starting)
15-95: The speed of the pump increases linearly
from n
min
to n
max
> 95:
Pump runs at maximum speed
Venting
The
pump venting function
is activated by pressing and
holding the upper operating button and automatically
vents the pump.
The heating system is not vented.
max
n
¹/min
min
0
5
85 88 93
100
P
W
M
%
max
min
0
7 1
2
1
5
95
100
P
W
M
%
n
¹/min
