DAB EVOSTA2 Installationsanweisung Und Wartung Seite 46

11. FUNCTIONS
11.1 Regulating Modes
EVOSTA2, EVOSTA3 circulators allow the following regulating modes depending on plant requirements:
− Proportional differential pressure regulation depending on the flow present in the plant.
− Constant differential pressure regulation.
Regulation with constant curve.
−
The regulating mode may be set through the EVOSTA2, EVOSTA3 control panel.
11.1.1 Regulation with Proportional Differential Pressure
11.1.1.1 Regulation with Proportional Differential Pressure –Advanced Menu
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ENGLISH
In this regulating mode the differential pressure is
reduced or increased as the demand for water
decreases or increases.
The Hs set point may be set from the display.
Regulation indicated for:
– Heating and conditioning plants with high
load losses
– Plants with secondary differential pressure
regulator
– Primary circuits with high load losses
Domestic water recirculating systems with
–
thermostatic valves on the rising columns
Holding down the Mode key for 20" gives access to
the Advanced Menu with the possibility of selecting
from 6 curves with proportional differential pressure
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