Brochure

7
NO-FLOW STOP
The energy-saving function automatically deacti-
vates the pump when a zero ow is detected. The
Wilo-Stratos MAXO recognises when, despite its
speed, the volume ow supplied is too low. This
means that the valves in the consumer circuit are
closed. Thanks to the intelligent function, the pump
stops the motor if the volume ow falls below a
specied minimum level. At regular intervals, it
checks whether the minimum volume ow has been
exceeded again, then continues in its set control
mode with auto control. The Wilo-Stratos MAXO thus
avoids unnecessary running time and saves electrical
pumping energy.
MULTI-FLOW ADAPTATION
The new innovative energy-saving function en-
ables the feeder pump to adjust its output to the
precise demand of the connected consumer circuit
pumps. The feeder pump continuously receives the
respective required volume ow from each individ-
ual secondary pump in short intervals. The sum of
the required volume ows from all secondary pumps
results in the target volume ow of the feeder pump,
so that the feeder pump only pumps the precise vol-
ume ow that the secondary pump requires.
It has the advantage that electrical pumping energy
is saved when compared to Δp-c control. In addi-
tion, a lower return temperature optimizes the heat
generator’s degree of utilisation which, in turn, has
a positive fuel saving effect. For local and district
heating transfer stations, the lower return tempera-
ture also leads to higher operational reliability, as
it avoids overows and the activation of the return
temperature limiter.
MULTI-FLOW ADAPTATION
of the feeder pump with
secondary pumps
Additional control functions can be found in
the technical data on page 11.