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17.1 Degassing the pump
Always vent the pump before starting!
The pump must never run when dry.
18.
FUNCTIONS
18.1 Regulating Modes
EVOSTA2 SOL circulators allow the following regulating modes depending on plant requirements:
−
Proportional differential pressure regulation depending on the flow present in the plant.
−
Regulation with constant curve.
The regulating mode may be set through the EVOSTA2 SOL control panel.
18.1.1 Regulation with Proportional Differential Pressure
ENGLISH
Figure 17: Venting of the pump
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:
54
–
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
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