Ultraheat / Ultracold T550 (UC50…) Operating Instructions Page 3 / 3
Previous year’s values
The electronic unit stores the meter readings for
quantity of energy, volume, the tariff register and
error time as well as the current maxima for flowrate,
power, temperature difference, flow temperature and
return temperature with their date stamps on a yearly
set day.
Monthly values
The electronic unit stores the calculator for quantity
of energy, volume, the tariff register and error time
as well as the monthly maxima for flowrate, power,
temperature difference, flow temperature and return
temperature with their date stamp for up to 60
months on the set day of each month.
Error messages
The meter constantly performs self-diagnostics and
can display various error massages.
Error message F4 means the battery must be re-
placed.
Error message F1, F2 or F5, F6, F8 means that the
temperature sensor is defective. Massage F3, F7, F9
indicates a fault in the electronics. In all these cases,
please call service.
Functional details
If the response temperature threshols are exceeded
and the temperatur difference is positive, the quanti-
ty of thermal energy is summed. Power and tem-
perature difference are acquired with the correct
sign. If the response temperature threshold is not
reached, the value is preceded by a u. The current
temperatures are shown in separate lines with a
resolution of 0.1°C.
In the segment test, all segments of the display are
switched on for test purposes.
To calculate the maximum, the power and flowrate
are averaged over a measuring period of, for ex-
ample, 60 min. The maximum values from the av-
erage calculation are preceded by Ma. The maxi-
mum temperatures are preceded by MH resp. MC.
The 8-digit property number (also the secondary
address in M-Bus operation), can be set in parame-
ter setting mode. The unit number is assigned by
the manufacturer.
The operating time is counted from the first time the
power supply is connected. Error times are sum-
mated, if an error is pending that prevents the meter
from measuring.
The date is incremented daily.
The type of installed modules is displayed. If an M-
Bus module is installed, the primary and secondary
address awill be displayed on the following lines.
The number for the firmware version is assigned by
the manufacturer.
EU Declaration of conformity
Landis+Gyr herewith declares that the products of
type UC50 comply with the requirements of the fol-
lowing directives:
2004/22/ECMeasuring instruments directive *)
2004/108/EC Electromagnetic compatibility
2006/95/EC Low-voltage directive
1999/5/EC Directive on radio equipment and tele-
communication terminal equipment (R&TTE)
2002/95/EC Directive on the restriction of the use
of certain hazardous substances in electrical and
electronic equipment (RoHS)
*) for cold meter in Germany applies PTB TR K 7.2
This declaration and the corresponding documents are
lodged at Mr. Fuchs c/o Landis+Gyr under the number
CE UC50 003/10.12
EG type-examination certificate
DE-11-MI004-PTB035
EG design-examination certificate
DE-11-MI004-PTB036
Certificate of the approval of a quality management
system
DE-12-AQ-PTB006MID
Notified body: PTB Braunschweig and Berlin,
Germany; Nr. 0102
In Germany the cold meter is approved under the
number 22.75/11.04.
Further information
The electronic unit must only be cleaned on the
outside. Please use a soft, damp cloth to do this,
which can be dipped in a non-corrosive cleaning
agent.
User seals may only be removed by authorized
persons for service purposes and must be re-
placed afterwards.
Up-to-date versions of all instructions can be found
on our homepage www.landisgyr.com.
Landis+Gyr GmbH
Humboldtstr. 64
D-90459 Nuremberg
Germany
