Grundfos Control MPC Montage- Und Betriebsanleitung Seite 36

1. Enable the function.
2. Select and enable one of the ten events.
3. Select: Normal or Stop. Skip step 4 if you select Stop.
4. Set: Setpoint, closed loop.
5. Set: Time, Hours, Minutes.
6. Select the day of week on which the settings are to be activated.
7. Select: Enabled.
8. Repeat steps 2 to 7 if several events are to be enabled. Note:
Up to ten events can be set.
9. Press .
10. Select: Enabled.
Factory settings
The function is disabled.
8.6.10 Proportional pressure (4.1.7)
Proportional pressure
Description
The function can only be enabled in pressure-controlled systems
and it automatically adapts the setpoint to the actual flow rate to
compensate for flow-dependent dynamic losses. As many systems
are designed with extra flow capacity, the estimated maximum flow
rate (Qpmax) can be entered manually. In systems with CR pumps,
the pump curves can be used to calculate the maximum flow rate at
the selected setpoint. Set a filter factor to prevent fluctuation.
If the multisensor function is enabled, it will have a higher
priority than the proportional pressure which will be
overruled.
The adaptation can be linear or square.
36
H
C B
A
Proportional pressure
Pos. Description
Pressure at zero flow. Starting point of proportional-
A pressure control (influence at zero flow = x % of
setpoint)
B Qpmax
C Setpoint
The function has these purposes:
• to compensate for pressure losses
• to reduce the energy consumption
• to increase the comfort for the user.
Setting range
• Selection of control mode
• Influence at 0 flow
• Estimated flow rate
• Filter factor.
Setting via the operating panel
• Settings > Primary controller > Proportional pressure.
1. Select: Enabled.
2. Select:
• Adaptation
• Linear or Square.
3. Set: Influence at 0 flow.
4. Set: Filter factor.
5. Select: Use pump curve or Enter value.
6. Set Qpmax if you select Enter value.
Factory settings
The function is disabled.
Q