10.2.2 Stop or Max. operation
In addition to Normal operating mode, you can select the operating
modes Stop or Max..
TM024318
Hydro Multi-E in operating mode Max.
Max. operation can for instance be used in connection with the
venting and startup procedures.
10.2.3 Operating condition in case of disconnection of power
supply
If the power supply to Hydro Multi-E disconnects, the settings will
be stored. Hydro Multi-E will restart in the same operating condition
it was in before the disconnection.
10.2.4
Further settings
You can make further settings with Grundfos GO. See
section Multimaster function.
Related information
9. Multimaster function
10.3 Control mode
Here you can choose between the different control modes.
10.3.1 Constant pressure
We recommend this control mode if the pump is to deliver a
constant pressure, independently of the flow in the system.
TM057901
Constant pressure
This control mode uses the factory-fitted pressure sensor, if any,
which measures the outlet pressure of the pump.
For pumps without a factory-fitted sensor, you must connect a
pressure sensor to one of the analog inputs of the pump. You can
set the pressure sensor in the Assist menu.
Examples
• One external pressure sensor.
TM057881
TM057882
Constant pressure
Controller settings
For recommended controller settings, see section Controller.
Factory settings
See section Factory settings.
Related information
10.6 Controller
21.6 Factory settings
10.3.2
Proportional pressure
For proportional pressure, see section Proportional pressure.
Related information
10.9 Proportional pressure
21
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