User Manual

3
Siemens
Datasheet
A6V11610252_en
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a
Smart Infrastructure 2019-07-12
Cable routing and cable selection
Note that when routing cables, the longer the cables run side by side and the smaller the
distance between them, the greater the electrical interference. Shielded cables must be used
in environments with EMC problems.
Twisted pair cables are required for the secondary supply lines and the signal lines.
Mounting and installation
Depending on use, the sensor should be located as follows:
● For flow temperature control (heating flow):
– Directly after the pump if the pump is located in the flow
– 1.5 to 2 m after the mixing valve if the pump is located in the return
● For return temperature limitation:
In the return at a location where the temperature can be correctly acquired
The sensor should be installed in an elbow with the immersion rod or the protection pocket
facing the direction of flow. The water must be well mixed where the temperature is acquired.
This is downstream from the pump or, if the pump is mounted in the return, at least 1.5 m
after the mixing point.
Mount the sensor so that the cable does not enter from the top.
For all sensors, the immersion length must be a minimum of 60 mm.
Do not cover the sensor with insulation.
To fit the sensor, a threaded fitting or T-piece G ½ must be welded into the pipe.
Mounting positions
Permitted Not permitted
Mounting
NOTICE! For sensors with non-sealing threaded nipples G ½, use a sealant with the
threaded connection (for example, hemp, Teflon tape and so on).
Mounting instructions
Mounting instructions are enclosed in the package.