Depending on the version, the flow sensor must be installed in flow or return.
The installation position is displayed in the info loop 3.5 (see "Information
loop (3)" page 51) and, if necessary, also by means of a pictogram.
Flow
Calming sections are not necessary before and after the flow sensor.
For systems without temperature mixing, a straight DN 3 - 10 section
upstream of the flow sensor is recommended.
The meter can be installed in both horizontal and vertical pipe
sections, provided air bubbles cannot collect in the meter.
The flow sensor must always be filled with liquid.
Avoid frost at the meter.
We recommend installing the flow sensor in a tilted position.
The minimum system pressure must be 1 bar to avoid cavitation.
Electrical and magnetic fields might disrupt electronic components
in the energy metering device. Make sure there is sufficient distance
(approx. 10 cm) between the calculator and its measurement signal
lines and possible sources of electromagnetic disturbance (e.g. trans-
formers, electric motors, supply lines, etc.).
If possible install the cables of the flow sensor or temperature sensor
freely suspended (not bundled - aerial effect) with sufficient distance
from electromagnetic interference sources.
The measurement signal lines (temperature and flow rate) must not
be routed in direct proximity to other lines, such as mains supply lines,
low-voltage supply lines and data transmission cables. The minimum
distance of 5 cm for low-voltage lines must be observed according to
EN 1434-6.
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Return
No pictogram
(Installation position
can be set on site,
see 6.1 page 36)