Functional Check; Calibration Of Sensor - Siemens REA22 Basic Documentation

4.4

Functional check

4.5

Calibration of sensor

CE1P2276E / 31.03.1999
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• Check the display. If there is no display, check the correct fitting and function of the
batteries
• Open front cover
• Mover setting slider to mode
–
In the case of heating mode, set the set value temperature to 29 °C by using
button
–
In the case of cooling mode, set the set value temperature to 3 °C by using but-
ton
• Mover setting slider to AUTO/RUN
• The relay and thus the regulating unit must respond after no more than one minute.
If this is not the case:
–
Check regulating unit and wiring
–
Room temperature may be higher than 29 °C or lower than 3 °C
• Reset setpoint temperature
If the displayed room temperature does not agree with the measured temperature, the
temperature detector can be recalibrated.
When the setting slider is set to the position
change as follows:
1 2 3 4 5
0 6 12 18
By pressing button or
0.2 °C (max. ±2 °C). On completion of the readjustment, the setting slider must be reset
to the AUTO/RUN position.
Basic Documentation REA22
Description of heating engineer settings
T3.
T3 to its previous level
D ay/
, press button
6 7
24
, the temperature can be changed in increments of
Issue 2.0
. Then, the display will
Siemens Building Technologies
Landis & Stefa Division