Heat Meter Installation - Elster F90S Manual

Heat Meter Installation

- Flush the pipes thoroughly prior to the installation of the heat meter�
- Install a dirt flap in front of the heat meter or clean the existing dirt flap
thoroughly�
- To avoid malfunctions and pressure surges due to aggregated air, install
the heat meter at the lowest possible point� The F90S must be installed in
a frost-free environment�
- Close the ball valves, release the pressure and empty the pipes�
- Unscrew the screw joints of the heat meter, remove the old gaskets and
clean the sealing surfaces thoroughly�
- Install the F90S, tension-free and with new gaskets, in either the low or
the high temperature pipe according to the data on its type plate� The
heat meter must be fitted so, that the arrow on the housing points into
streamwise direction�
- Fill the pipes slowly and carefully after installation to protect the heat me-
ter from being damaged by pressure surges�
- Make sure that the heat meter is always filled with water�
Ball valve with sensor
socket M10x1
Dirt flap
Flow (high temperature)
Red sensor
Heat meter with pre-installed
blue sensor
Return
(low temperature)
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