Operation; Setting The Control Mode And Delivery Head - Wilo Yonos PARA High Flow Série Notice De Montage Et De Mise En Service

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8.2

Operation

WARNING! Risk of burns!
Depending on the operating status of the system, the entire pump can become very
hot. There is a risk of burns if metallic surfaces are touched (e.g. cooling fins, motor
housing, pump housing). The setting can be made on the control module during normal
operation by pressing the red button. Do not touch any hot surfaces when doing this.
The pump is operated via the operating knob (fig. 1a, item 1.3).

8.2.1 Setting the control mode and delivery head

By turning the operating knob either the control mode and desired delivery head are
selected or the speed stage is set.
Setting the control mode
Variable differential pressure (Δp-v): fig. 8
The pump for the control mode Δp-v is set at the left of the middle position.
Constant differential pressure (Δp-c): fig. 9
The pump for the control mode Δp-c is set at the right of the middle position.
3 speed stages (n = constant):
The pump can be set to 3 speed stages (1, 2 or 3) using the operating knob (Fig. 1b).
Setting
1
2
3
* Curves for setting the speed stages are dependent on the type; see the catalogue.
Setting the delivery head
The LED display shows the setpoint set on the pump.
If the operating knob is turned to the left or right, the set setpoint increases for the respec-
tive control mode. If the operating knob is turned back again, the set setpoint is reduced.
Adjustment is done in steps of 0.5 m (up to the delivery head setpoint of 10 m) or in steps
of 1 m (> 10 m delivery head setpoint). Intermediate steps are possible, but are not shown.
Factory setting
The pumps are delivered in control mode Δp-v. Here, the delivery head setpoint is preset
to between ½ and ¾ of the max. delivery head setpoint, depending on the pump type (see
pump data in the catalogue). The required pump output is to be adjusted, depending on
the system requirements.
NOTE: In the event of a power interruption, the delivery head setpoint is retained.
34
Display
C1
C2
C3
Speed stage
min.
med.
max.
WILO SE 01/2018