Installation And Position Of Additional Sensors To Be Con- Nected - Wilo -Stratos GIGA2.0-I Einbau- Und Betriebsanleitung

en
Fig. 17: Example – differential pressure
sensor connection in y-pipe installation
6.7 Installation and position of addi-
tional sensors to be connected
150
Two single pumps as twin-head pump in Y-piece:
In the example in Fig. 17, the main pump is the left-hand pump in the direction of flow. Con-
nect the differential pressure sensor to this pump!
The two single pumps must be connected and configured to form a twin-head pump. See
"Operating the pump" [} 164] section and "Twin-head pump operation" [} 187] section.
The measuring points of the differential pressure sensor must be on the suction and dis-
charge side of the twin-head pump system in the common collector pipe.
In the following cases, sensor sleeves must be installed in the pipes for the admission of
temperature sensors:
• Heating/cooling quantity measurement
• Temperature control
Heating/cooling quantity measurement:
A temperature sensor must be installed in the flow and return of the hydraulic circuit, via
which the pump records the two temperature values. The temperature sensors are con-
figured in the pump menu.
NOTICE
The heat/cooling quantity measurement is not suitable for billing the
amount of energy consumed. It does not meet the calibration require-
ments for billing-relevant energy quantity measuring instruments.
Temperature difference ΔT-c and temperature T-c
For the detection of one or two temperatures, the temperature sensors must be installed at
suitable positions in the pipe. The temperature sensors are configured in the pump menu.
Detailed information on the sensor positions for each pump control mode can be found in
the Consulting guide. See www.wilo.com.
NOTICE
Available as accessories:
Temperature sensor Pt1000 for connection to the pump (tolerance class
AA according to IEC 60751)
Sensor sleeves for installation in the piping
Index circuit evaluator – hydraulic index circuit in the system:
As delivered, a differential pressure sensor is installed on the flanges of the pump. Alternat-
ively, a differential pressure sensor can also be installed at the hydraulically most unfavour-
able point in the pipe network. The cable connection is connected to one of the analogue
inputs. The differential pressure sensor is configured in the pump menu. Possible signal
types on differential pressure sensors:
• 0 ... 10 V
• 2 ... 10 V
• 0 ... 20 mA
• 4 ... 20 mA
Installation and operating instructions • Wilo-Stratos GIGA2.0-I, Wilo-Stratos GIGA2.0-D • Ed.02/2022-07