7 Operation
47 of 76
EtaLine Pro
1168.87/01-EN
Function
H
Q
1
2
3
4
Fig. 28:
Dynamic Control function
1 Excess energy input
3 Control curve
2 Dynamic Control
4 Minimum characteristic curve
Dynamic control (2) detects when the selected control curve (3) is higher than the
minimum characteristic curve
5)
(4). The control system shifts the control curve
downward, and power input is reduced automatically. To ensure sufficient supply the
pump set switches to a higher control curve when the minimum characteristic curve is
reached. The energy input is reduced (1) without any negative impact on the supply
of the building.
The pump set is operated in an optimised way, even if the system characteristic curve
is unknown; the noise at the thermostatic valves is reduced.
▪
If the system characteristic curve is known (e.g. hydraulic balancing):
– Set the setpoint manually. Select a control curve that is minimally above the
characteristic curve. See type series booklet.
– Activating Dynamic Control in addition is recommended. Even if the setpoint
has been set to an optimum, excessive throttling of the thermostatic valves
may occur in certain climatic conditions. Dynamic Control will further
optimise the operating point.
▪
If the system characteristic curve is unknown:
– Use the standard settings and activate Dynamic Control. The pump set
automatically recognises the system characteristic curve via the variable
speed system and optimises the operating point accordingly.
Settings
+
H
H
max
H
mi n
Q
-
H
S
Fig. 29:
Dynamic Control settings
5
Characteristic curve at fully open thermostatic valves
