User Manual

Mounting
The meter’s mounting position is optional, the place of installation (return or flow)
must correspond to the type of meter used.
The flow measuring section must always be installed in the return.
Inlet or outlet settling paths are not required. If the meter is installed in the common
return of 2 heating circuits (e.g. space heating and DHW), the place of installation
must have an adequate distance from the T-piece (min. 10 x DN) to allow the
different water temperatures to properly mix.
Before installing the meter, the system must be thoroughly flushed.
Install the flow measuring section between 2 shutoff valves with the arrow pointing
in the direction of flow. The sensors must be installed in the same water circuit as
the flow measuring section (observe mixing). The sensors can be fitted in T-pieces,
ball valves, direct immersed or in pockets (national regulations must be observed).
In any case, the end of the sensors must extend to at least the pipe center.
Temperature sensors and fittings must be sealed to prevent tampering.
T-piece
Example of integration with T-piece and meter with 110 mm fitting
Ball valve
Example of integration with ball valve and meter with 190 mm fitting
When used as a cooling energy meter, it must be made certain that the black cover
on the measuring tube points to the side or downward to avoid problems resulting
from condensation. In that case, the processor must be detached from the flow
measuring section to be mounted on the wall, for instance.
Flow measuring
section
Note
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Siemens Ultrasonic heat and cooling energy meters 2WR6.. CE2N5378en
Building Technologies 2014-04-04