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

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Setting the control functions en
Installation and operating instructions Wilo-Stratos GIGA2.0-I, Wilo-Stratos GIGA2.0-D 189
design point.
The additional input of the required volume flow at the design point ensures that the
∆p-v characteristic curve runs through the design point.
The slope of the ∆p-v characteristic curve is optimised.
11.2.5 Gradient ∆p-v characteristic
curve
The additional function “Gradient ∆p-v characteristic curve” can be used for the differ-
ential pressure control Δp‑v. A factor can be set on the pump to optimise the Δp-v
control characteristic. The factor 50 % (½ H
set
) is pre-set at the factory. In some install-
ations with special pipe network characteristics, there may be inadequate or excessive
supply. The factor reduces (< 50 %) or increases (> 50 %) the Δp-v delivery head at
Q=0 m³/h.
ƒ
Factor < 50 %: ∆p‑v characteristic curve becomes steeper.
ƒ
Factor > 50 %: ∆p‑v characteristic curve becomes flatter. Factor 100 % is equal to
an Δp-c control.
The excessive or inadequate supply can be compensated by adjusting the factor.
ƒ
In case of inadequate supply in the partial load range, the value must be increased.
ƒ
In case of excessive supply in the partial load range, the value can be reduced. More
energy can be saved and flow noises are reduced.
11.2.6 Multi-Flow Adaptation mixer
In the case of secondary circuits with in-built 3-way mixers, the mixed volume flow can
be calculated so that the primary pump takes the actual demand of the secondary
pumps into account. To do this, the following has to be carried out:
temperature sensors must be mounted on the secondary pumps in the respective feed
and return of the secondary circuits and the heating or cooling quantity measurement
must be activated.
Temperature sensors are mounted on the feeder pump at the primary feed upstream of
the heat exchanger or hydraulic shunt and at the secondary feed behind it. The function
Multi-Flow Adaptation mixer is activated on the feeder pump.
11.3 Settings assistant
Thanks to the setting assistant, it is not necessary to be familiar with the matching
control mode and additional option of the respective application.
You can select the matching control mode and additional option in the application’s
setting assistant.
You can also directly select a basic control mode in the setting assistant.
Settings
Set auto control
Settings assistant, setpoints, options
Manual operation
Manual override
Menu for adjusting
control functions.
Double pump operation
Set double pump
External interfaces
Analogue, digital, SSM, SBM ...
Fig. 38: Settings menu
Selection via the application
In the “Settings” menu , select the following in turn:
1. “Set control mode”
2. “Setting assistant”
Possible application selection