7.5.4 Setting the duty point for proportional-pressure control
mode
The duty point is set via AV,7 (head duty point) and AV,8 (flow duty
point). The control curve will be a straight sloped line through the
configured duty point.
4
5
8
1
2
3
6
7
TM069263
Proportional-pressure control curve
Pos.
Description
1
Head [m]
2
H
max.
3
AV,7
4
AV,8
5
Q
max.
6
H
0
7
H
0
/2
8
Flow [m
3
/h]
The foot point of the proportional-pressure curve at zero flow is
always half of the head where the proportional-pressure curve
crosses the pump curve for maximum speed.
7.5.5 Setting the duty point for constant-flow control mode
The duty point is set via AV,8 (flow duty point). In this control mode,
the pump flow will be constant. This control mode is recommended
for heating coils. For pumps without a dedicated flow control
function, the auxiliary control function flow limit is activated. For
hydraulic circuits with a low hydraulic resistance, such as heating
coils, this is effectively flow control mode.
5
5
3
4
7
1
2
6
TM069262
Pos.
Description
1
Head [m]
2
H
max.
3
AV,8
4
Q
max.
5
System curves
6
Control curve
7
Flow [m
3
/h]
16
English (GB)
