115
Reading performance curve
For a given speed, the pump can overcome a given pressure drop, for a given flow:
- The pressure drop (or manometric height) is identified on the ordinate axis, with the
units in metres (m) - It depends on the installation.
- The flow rate is identified on the x-axis, with the units in cubic metres per hour (m
3
/h)
- Depends on the power to be conditioned.
- Constant velocity curves are present in the graph, identified in I, II and III.
- The installer must set the required curve from the lowest to the highest speed by
means of the required flow rate and the head loss of the installation.
- The pumps run at the highest speed in the factory.
Figure 81 - Pump performance - Constant speeds I, II and III
Содержание Hidro 12
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Страница 133: ...127 25 2 Flow chart Hidro 12 Flow chart 1 Lighting ...
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Страница 135: ...129 Flow chart 2 Disabling Note The circulator pump off below 40 C water temperature ...
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Страница 138: ...132 Flow chart 2 Disabling Note The circulator pump off below 40 C water temperature ...