Data Sheet for Product

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Siemens RDE100.. Room thermostat with Auto Timer, Option External Input CB1N1422en_10
Building Technologies 2019-02-28
Commissioning notes
After power is applied, the thermostat carries out a reset during which all LCD
segments flash, indicating that the reset was made correctly. After the reset, the
thermostat is ready for commissioning by qualified HVAC personnel.
The control parameters of the thermostat can be set to ensure optimum
performance of the entire system. Please refer to Operating Instructions
CB1B1422, section "Do you want to change parameters?".
If the temperature on the display does not agree with the room temperature
effectively measured, the temperature sensor can be recalibrated. For that
purpose, adjust parameter P04.
We recommend reviewing the setpoint lock (for public areas) in parameters P06
and P08 and changing them as needed. If the Economy setpoint is locked then the
Comfort temperature setpoint can not be set lower than the locked Economy
setpoint.
Since the thermostat uses touch technology and to minimize battery power
consumption, a parameter P21 (adjustable from 0.25 to 1.5 seconds) is
implemented for the user to adjust. This function is only valid for the battery-
powered version and the default value is 1 second.
This means that when, for a certain time, the user does not touch the touchpad, the
unit operates in power saving mode and the touchpad is running at a scanning rate
of 1 second.
(From the calculation – assuming 4 operations per day on the thermostat, the
estimated 1-second scanning rate results in a battery life of 1 year. If the user
increases the scanning rate, the batteries’ life is extended.)
Different parameter setting of X1 external input is described below:
Parameter P14=0 (No Input) is a default setting, which provides no external input
function.
Digital input
An external contact can switch the thermostat from any operating mode to
Economy.
Typical applications: Window contact
Key card application
Set parameter P14 = 2 (X1 External input = Digital Input) and adapt parameter P17
(Window contact = Normally Open / Closed) accordingly.
External sensor (used for controlling)
The measured external sensor temperature is displayed and used for calculating
heating demand instead of temperature detected by thermostat built-in internal
sensor. In case of problems with the external sensor, the thermostat uses the
internal sensor instead.
Typical applications: External room temperature sensor
Floor heating temperature control bath room
Commissioning
Sensor calibration
Setpoint lock
Touchpad scanning
rate
X1 external input