Double Pump Installation/Y-Pump Installation; Setting The Pump Output - Wilo Stratos GIGA Serie Instrucciones De Instalación Y Funcionamiento

English
9.2 Double pump installation/Y-pump
installation
Fig. 42: Setting the master pump
9.3

Setting the pump output

46
NOTE:
For the initial commissioning of a Y-pump installation that has not been
preconfigured, both pumps are set to their factory setting. After con-
necting the double pump communication cable, the fault code 'E035' is
displayed. Both drives run at the emergency operation speed.
On acknowledgment of the error message, menu <5.1.2.0> is dis-
played and 'MA' (= master) flashes. In order to acknowledge 'MA',
"access disable" must be deactivated and service mode must be
active (Fig. 42).
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 corresponding collector pipe.
The other pump will then display the status 'SL' (= slave pump).
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 35).
• 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.
• Factory settings do not comply with the pump 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 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! Danger of property damage!
An inadequate volume flow can lead to damage on the mechanical
shaft seal; the minimum volume flow depends on the rotation
speed of the pump.
• Make sure that the volume flow does not go below the minimum
value Q .
min
• Calculation of Q :
min
Q = 10% x Q
min max pump
Actual speed
x
Max. speed
WILO SE 01/2014