Wilo Stratos GIGA2.0-D, Инструкция по установке и эксплуатации

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en Commissioning
178 WILO SE 2021-12
NOTICE
• Always keep to the minimum pressure!
ƒ
To avoid cavitation noises and damage, a minimum inlet pressure must be guaran-
teed at the suction port of the pump. The minimum inlet pressure depends on the
operating situation and the pump’s duty point. Accordingly, the minimum pressure
must be determined.
ƒ
The main parameters for defining the minimum inlet pressure are the NPSH value
of the pump at its duty point and the vapour pressure of the fluid. The NPSH value
can be found in the technical documentation of the respective pump type.
NOTICE
When pumping from an open tank (e.g. cooling tower), ensure that there is always a
sufficient liquid level above the pump’s suction port. This prevents the pump from
running dry. The minimum inlet pressure must be observed.
10.2 Description of operating elements
Fig. 28: Operating elements
Pos. Name Explanation
1 Graphic display Provides information about settings and pump status.
Self-explanatory user interface for setting the pump.
2 Green LED indic-
ator LED is lit up: pump is supplied with voltage and ready for
operation.
There are no warnings and no faults.
3 Blue LED indicator LED is lit up: pump is influenced externally via an inter-
face, e.g. by
• Bluetooth remote control
• Setpoint specification via analogue input AI1 ... AI2
• Intervention of building automation via digital input
DI1, DI2 or bus communication
Flashes with active twin-head pump connection.
4 Operating button Navigate menus and edit content by turning and press-
ing.
5 “Back” button Menu navigation
• To go back to the previous menu level (briefly press
once).
• To go back to the previous settings (briefly press once).
• Return to the main menu (press and hold 1 x,
> 2 seconds)
Switches the key lock on or off (> 5 seconds) in combin-
ation with the “Context” button.
6 “Context” button Opens the “Context” menu with additional options and
functions.
Switches the key lock on or off in combination with the
“Back” button
* (> 5 seconds).
Table 15: Description of operating elements
* The configuration of the key lock makes it possible to protect the pump setting from
being changed. This is the case, for example, when the pump is accessed via Bluetooth
or Wilo Net via the Wilo-Smart Connect Gateway with the Wilo-Smart Connect app.
10.3 Pump operation
10.3.1 Setting of pump output
The system was designed for a certain duty point (full load point, calculated maximum
heating or cooling power demand). During commissioning, the pump output (delivery
head) is set according to the duty point of the system.