12
6.4 Constant-curve duty
To be set with the R100, see section 7. Setting the
pump.
The pump can be set to operate according to a con-
stant curve, like an uncontrolled pump, see fig. 6.
When the pump has been set to constant-curve
mode with the R100, the setting can be changed on
the control panel or with the R100.
MAGNA 25-100, 32-100, 40-100(D), 50-100:
Select one of 9 curves (81 curves with the R100) be-
tween the max. and min. curves, see fig. 5.
MAGNA 25-60, 32-60:
Select one of 5 curves (41 curves with the R100) be-
tween the max. and min. curves, see fig. 5.
Fig. 5 Operating curves
6.5 Max. or min. curve duty
To be set on the control panel, with the R100 or via
GENI module, see section 7. Setting the pump.
The pump can be set to operate according to the
max. or min. curve, like an uncontrolled pump, see
fig. 6.
This operating mode is available, irrespective of the
control mode.
Fig. 6 Max. and min. curves
The max. curve mode can be selected if an uncon-
trolled pump is required.
The min. curve mode can be used in periods in
which a minimum flow is required. This operating
mode is for instance suitable for manual night-time
duty if automatic night-time duty is not desired.
6.6 Temperature influence
To be set with the R100, see section 7. Setting the
pump.
When this function is activated in proportional- or
constant-pressure control mode, the setpoint for
head will be reduced according to the liquid tempera-
ture.
It is possible to set temperature influence to function
at liquid temperatures below 80°C or below 50°C.
These temperature limits are called T
max.
. The set-
point is reduced in relation to the head set (= 100%)
according to the characteristics below.
Fig. 7 Temperature influence
In the above example, T
max.
= 80°C has been se-
lected. The actual liquid temperature T
actual
causes
the setpoint for head to be reduced from 100% to
H
actual
.
The temperature influence function requires:
• Proportional- or constant-pressure control mode.
• The pump must be installed in the flow pipe.
• System with flow-pipe temperature control.
Temperature influence is suitable in:
• systems with variable flows (e.g. two-pipe heating
systems), in which the activation of the tempera-
ture influence function will ensure a further reduc-
tion of the pump performance in periods with small
heating demands and consequently a reduced
flow-pipe temperature.
• systems with almost constant flows (e.g. one-pipe
heating systems and underfloor heating systems),
in which variable heating demands cannot be reg-
istered as changes in the head as is the case with
two-pipe heating systems. In such systems, the
pump performance can only be adjusted by acti-
vating the temperature influence function.
Selection of T
max.
In systems with a dimensioned flow-pipe tempera-
ture of:
• up to and including 55°C, select T
max.
= 50°C,
• above 55°C, select T
max.
= 80°C.
TM03 0551 0205TM00 5547 4596
H
Q
Max.
Min.
Q
H
Max.
Min.
TM01 0626 1797
30%
100%
CT
805020
H
H
Q
T
actual
H
actual
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