Siemens Building Technologies
CE2U5372xx
13.06.2017 12
4.1
Monthly values
The meter stores the following values for 24 months on the
monthly set day
Missing time
Volume
Energy
and the maxima with date stamp for
Flow
Power
Temperature hot side
Temperature cold side
4.2
Parameterisation
When the LCD displays the code entry, you can call up the
parameterisation operation by inputting the code. You can set
date and M-Bus primary address in the parameterisation oper-
ation for example. For more detail see separate parameterisa-
tion instruction.
5.
Getting Started
For activation proceed as follows:
Open the slide valves slowly.
Check the heating system for leak-tightness and bleed air
out carefully.
Press the button on the meter briefly.
The message "F0" disappears after 10 sec.
Check the measured values for flow and temperatures for
plausibility.
Vent the heating system until the flow display is stable.
Fit the user locks to the fittings and the temperature sen-
sors. The scope of supply includes two self lock seals for
sealing a sensor and the connecting fitting.
Read the meter status for energy, volume, operation and
missing time and note the values.
Error messages for incorrect installation:
Error "incorrect flow direction (negative)"
Check that the flow direction arrows on the volume measurement unit
match the flow direction of the system. If the directions do not match,
turn the volume measurement unit through 180°.
Error "negative temperature difference"
Check whether the sensors are installed correctly. If the sensors are
not installed correctly, change the installation position of the sensors.
Heating meter:
Temperature sensor in the flow-pipe with higher temperatures; temper-
ature sensor in return-pipe with lower temperature
Cooling meter:
Temperature sensor in the flow-pipe with lower temperatures; tempera-
ture sensor in return-pipe with higher temperature
6.
Functional Details
If the respective operation thresholds are exceeded and flow
and temperature difference are positive, the meter summates
the energy and the volume.
If the operate margin is gone below a "u" is displayed at a leading
point for the flow, power and temperature display.
For a positive flow the activity display appears in the user
loop in the LCD.
All segments of the display are switched on for control purpos-
es during the segment test. The flow, power and temperature
difference are recorded with the appro/- signs.
The operating hours are counted from the first connection of
the power supply. The meter saves "operating time with flow"
as soon as a positive flow is recognised. Missing hours are
summated if there is a fault and the meter is thus unable to
take a measurement.
Stored maximum values are marked with an "
" in the lower
right hand area of the LCD.
7.
Error codes
The meter continuously runs a self-diagnosis and can thus
recognise and display various installation or meter errors:
Error code Error
Service guidelines
FL nEG Incorrect flow direction
Check flow or installation direc-
tion; correct if necessary
if necessary in exchange with:
DIFF nEG Negative temperature difference
Check installation point of the
temperature sensors; exchange if
necessary
if necessary in exchange with:
F0
No flow can be measured
Air in the measurement unit/pipe,
bleed air from pipe (delivery
condition)
F1
Interruption in the hot side temper-
ature sensor
Inform service department
F2
Interruption in cold side tempera-
ture sensor
Inform service department
F3
Electronics for temperature evalua-
tion defective
Inform service department
F4
Battery flat
Inform service department
F5
Short-circuit hot side temperature
sensor
Inform service department
F6
Short-circuit cold side temperature
sensor
Inform service department
F7
Error in the internal memory
holding
Inform service department
F8
Errors F1, F2, F3, F5 or F6 for
longer than 8 hours, recognition of
attempts to manipulate.
No further measurements are
carried out.
Measure dependent on error
code. Error message F8 must be
reset by service department.
F9
Error in the electronics
Inform service department