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and the date and time are still updated, but none of the measuring
functions work, incl. the flow rate measurement. Communication still
functions over the optional M-Bus, RS485, RS232 modules or the opti-
cal interface, but reduces the life of the backup battery. The wireless
function is switched off in the event of power supply failure.
6.
Start-up operation
Once the meter has been installed, the components (calculator, volume
measuring component and both temperature sensors) must be sealed
with a tamper-proof seal and the meter started up by a specialist com-
pany approved according to the legislation.
ƒ
Check the display for a plausible indication of flow rate and tempe-
ratures.
User guide for further Information is available at
https://www.diehl.com/metering/en/support-center/download-center/
6.1 Flow/return setting (optional ex works)
Optionally, the installation position of the meter can be set in-situ in loop 3
("3.5" page 51). Consequently installation in the inlet (flow) or outlet
(return) is possible.
This setting must be made prior to initial operation of the meter.
As supplied, the outlet (return) is pre-set and is shown as follows in the display.
To changeover, switch to the "OutLEt" window in loop 3 (see 9. Operation).
Pressing and holding the button for > 6 s changes the display/setting to
"InLEt".
This setting can be changed a total of 8 times by pressing the button.
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Setting and number of possi-
ble changes.
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