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8.4 Adjusting the proportional-pressure setpoint
Description
You can only enable this function in pressure-controlled systems.
The function automatically adapts the setpoint to the actual flow
rate to compensate for flow-dependent dynamic losses.
The adaptation can only be square. See fig. 10.
A filter factor can be set to prevent fluctuation.
H
C
A
Fig. 10 Proportional pressure
Pos.
Description
Pressure at zero flow.
A
Starting point of proportional-pressure control.
Influence at zero flow is equal to x % of the setpoint.
B
Qnom
C
Setpoint
RESET
The "PPS" value is defined in psi at zero flow.
14
The function has these purposes:
•
compensate for pressure losses
•
reduce the energy consumption
•
increase the comfort for the user.
Activating the function through PC Tool E-products
Settings > Primary controller.
1. Select: Enabled proportional pressure.
2. Set: Influence at zero flow.
3. Set: Filter factor.
4. Select: Hmax / Enter value. Based on pump data.
5. Select: Qnom / Enter value. Based on pump data.
6. Select: Hnom / Enter value. Based on pump data.
Activating the function via the operating panel
This is only applicable when the function is enabled in PC Tool
B
E-products.
1. Press [RESET] for 4 seconds. Let go of the button when the
text "PPS" appears in the display.
2. Adjust the "PPS" value with the arrow up and arrow down
buttons.
Q
Keep the buttons pressed for 4 seconds.
.
See section
Local mode,
external stop activated
.
changing settings in local mode.
.
for
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