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Siemens RDG1... Wall-mounted room thermostats with LCD CE1N3181en
Building Technologies 2017-11-20
1. Select the application via the DIP switches at the rear of thermostat before fitting
the front housing to the mounting plate.
2. Power up the thermostat after successfully connecting the line power. The
thermostat starts to reset and all LCD segments flash, indicating that the reset was
correct.
After the reset, which takes about 3 seconds, the thermostat is ready for commissioning
by qualified HVAC staff. The control parameters of the thermostat can be set to ensure
optimum performance of the entire system (see Basic Documentation P3181).
The temperature unit selection wizard enables to select the preferable temperature unit
display on thermostat between °C and °F.
1. Rotate rotary knob to select the preferable temperature unit.
2. Press the button (OK) to confirm the selection, and the thermostat goes to
normal operating page.
∂ Pressing button (Esc) does not confirm the temperature unit selection.
∂ If the temperature unit is not selected, °C is used by default.
∂ The control sequence may need to be set via parameter P01 depending on the
application. The factory setting for the 2-pipe application is "Cooling only"; and
"Heating and cooling" for the 4-pipe application.
∂ When the thermostat is used in connection with a compressor, the minimum output
on-time (parameter P48) and off-time (parameter P49) for Y11/Y21 (RDG110) must
be adjusted to avoid damage to the compressor and shortening its life.
∂ Recalibrate the temperature sensor via parameter P05 if the room temperature
displays on the thermostat does not match the room temperature measured.
∂ If an electric heater is directly connected to output Y21, the load current of the
electric heater should be indicated in parameter P46. (RDG110, Index D and higher
only). Default setting: 1 A for loads up to 1 A.
∂ We recommend to review the setpoints and setpoint ranges (parameters P08…P12)
and change them as needed to achieve maximum comfort and save energy.
Disposal
The device is considered an electronic device for disposal in terms of the
European Directive 2012/19/EU and may not be disposed of as domestic
garbage.
∂ Dispose of the device through channels provided for this purpose.
∂ Comply with all local and currently applicable laws and regulations.
Commissioning
Temperature unit
selection wizard (only
for RDG110U and
RDG160TU)
Notes
Control sequence
Compressor-based
application
Calibrate sensor
e
compensation for el.
heating
Setpoint and setpoint
range limitation
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