Grundfos Hydro Multi-E Series Installation And Operating Instructions Manual page 17

10.1.1 Setpoint setting
Set the desired setpoint by pressing
be set on any of the pumps in the system and applies to the
complete booster system.
The light fields on the control panel will indicate the setpoint set.
Pump in constant-pressure control mode
Hydro Multi-E systems are as standard set up from factory as
pressure boosting systems, but can be set up to other control
modes. See CRI and CRIE IO installation and operating
instructions. The following example applies to a pump in an
application where a pressure sensor gives a feedback to the
pump. If the sensor is retrofitted to the pump, it must be set
manually as the pump does not automatically register a
connected sensor.
Figure 29 shows that the light fields 5 and 6 are activated,
indicating a desired setpoint of 3 bar with a sensor measuring
range from 0 to 6 bar. The setting range is equal to the sensor
measuring range.
bar
6
3
0
Fig. 29 Setpoint set to 3 bar, constant-pressure control mode
H
Fig. 30 Constant pressure curve
or . The setpoint can
Q
Setting to maximum curve:
• Press continuously to change over to the maximum curve
of the pump (top light field flashes). When the top light field is
on, press and hold for for 3 seconds until the light field
starts flashing.
• To change back, press
setpoint is indicated.
Example: Pump set to maximum curve.
Figure 31 shows that the top light field is flashing, indicating
maximum curve.
H
Fig. 31 Maximum curve duty
Setting to minimum curve:
• Press continuously to change over to the minimum curve
of the pump (bottom light field flashes). When the bottom light
field is on, press and hold
starts flashing.
• To change back, press continuously until the desired
setpoint is indicated.
Example: Pump set to minimum curve.
Figure 32 shows that the bottom light field is flashing, indicating
minimum curve.
H
Fig. 32 Minimum curve duty
continuously until the desired
Q
for 3 seconds until the light field
Q
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