Operation Manual

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Siemens REV24.. room temperature controller CE1N2205en
Building Technologies 24.04.2008
The controller can be switched over for cooling applications on DIP switch 9.
DIP switch 9 ON:
Cooling
DIP switch 9 OFF:
Heating (factory setting)
Press the DIP switch reset button to save the settings.
Only applicable to REV..DC (with integrated DCF77 receiver to receive time signal from
Frankfurt, Germany)!
DIP switch ON: Clock run by controller-internal quartz.
DIP switch OFF: Time signal DCF77 from Frankfurt, Germany.
Press the DIP switch reset button to save the settings.
During startup, REV..DC synchronizes automatically to the time signal (DCF77) from
Frankfurt, Germany. Synchronization takes max. 10 minutes. Synchronization restarts
each time you press the button or move the program selection slider from the RUN
position during these 10 minutes. Siemens recommends to set the desired settings upon
startup, install the REV..DC in the desired location, and not carry out any actions on the
REV..DC for the next 10 minutes.
In normal operation, the REV..DC synchronizes to the radio clock every day at 3:10 a.m.
The time signal from Frankfurt is modulated to a radio signal. The reception of this radio
signal depends on the distance to Frankfurt, atmospheric conditions as well as the
location where the REV..DC is installed. Siemens cannot guarantee that the REV..DC
can receive the time signal from Frankfurt at any time and any place.
The radio clock symbol is deactivated and an error message is displayed if the clock was not
able to synchronize the time for 7 consecutive days. The controller then runs on the internal
quartz.
After you change one or several DIP switch positions, you must press the DIP switch
reset button to reset the DIP switch.
Else, the previous setting remains active!
G Operating mode heating
or cooling:
DIP switch 9
H Radio clock:
DIP switch 10
Note
on synchronization
Note
on reception
No reception
J DIP switch reset
ON
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