Double Pump Installation; Setting The Pump Output - Wilo VeroLine IP-E Notice De Montage Et De Mise En Service

9.2

Double pump installation

Fig. 35: Setting the master pump
9.3

Setting the pump output

Installation and operating instructions Wilo-VeroLine IP-E, Wilo-VeroTwin DP-E
NOTE:
For DP-E pumps, the left-hand pump in the direction of flow is
already factory-configured as the master pump.
For the initial commissioning of a double pump or Y-pump installation
that is not preconfigured, both pumps are set to their factory setting.
After connecting the double pump communication cable, the fault
code "E035" is displayed. Both drives run at the emergency operation
speed.
On acknowledgement of the fault signal, menu <5.1.2.0> is displayed
and "MA" (= master) flashes. In order to acknowledge "MA", "access
disable" must be deactivated and service mode must be active
(Fig. 35).
Both pumps are set to "master" and "MA" flashes on the displays of
both electronic modules.
• Acknowledge one of the two pumps as master pump by pressing the
red button. The status "MA" appears on the display of the master
pump. The differential pressure sensor must be connected on the
master.
The measuring points of the differential pressure sensor of the master
pump must be on the suction and pressure side of the double-pump
system in the respective collector pipe.
The other pump will then display the status "SL" (= slave).
All further pump settings must now be made via the master only.
NOTE:
The procedure can be manually started later by selecting the menu
<5.1.2.0>.
(For information about navigation in the service menu, see 8.6.3
"Navigation" on page 71).
• The system was designed for a certain duty point (full load point, cal-
culated maximum heating capacity requirement). During commis-
sioning, the pump output (delivery head) must be set according to the
duty point of the system.
• The factory setting does not correspond to the output required for
the system. It is determined with the help of the pump curve diagram
for the selected pump type (from catalogue/data sheet).
NOTE:
The flow value shown on the IR-Monitor/IR-PDA display or output to
the building management system must not be used to control the
pump. This value is merely an indicator of general trends.
A flow value is not output on every type of pump.
CAUTION! Material damage!
If the volume flow is too low, this may damage the mechanical seal.
• Make sure that the volume flow does not go below the minimum
value Q .
min
Calculation of Q :
min
Q = 10% x Q x
min max pump
actual speed
max. speed
English
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