SIEMENS RDG400 Room Thermostat Instruction Manual

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Operating Instructions  

RDG400  

RDG400 – the electronic room thermostat that allows you to set the ideal room temperature you want.  

The thermostat satisfies your individual needs in all operating modes: Comfort, Energy Saving and  

Protection mode. You can either rely on the factory settings or make adjustments that suit your individual  

needs.  

Main display  

Room  

Operating mode  

Heating mode  

temperature  

Room temperature in  

degrees Celsius  

Electrical heater on  

Cooling mode  

Room temperature in  

degrees Fahrenheit  

Button lock active  

Alert indicator  

Comfort mode  

Energy Saving mode  

Condensation in the  

room  

Protection mode:  

Protection against frost  

Temporary timer  

function active  

Indicator for selecting  

mode  

Additional user information  

Operating mode button  

Protection mode button  

Rotary knob  

Changing the room temperature  

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The setpoint can be adjusted with the rotary knob when Comfort mode  

active  

is  

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Turn the rotary knob clockwise (+) to increase, or counterclockwise (-) to decrease  

the current room temperature setpoint for Comfort mode  

The setting range is from 5...40 °C (41 … 104 °F), unless limited by parameters P09 and P10  

(parameter Settings, see reverse side).  

Selecting Comfort mode  

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Press the operating mode button until symbol  

Comfort mode is selected  

appears, indicating that  

In Comfort mode, the thermostat maintains the setpoint which can be adjusted  

with the rotary knob  

Selecting Protection mode    

•

Press the operating mode button until symbol  

Protection mode is selected  

appears, indicating that  

•

In Protection mode, the plant stops operating. If the room temperature falls below  

8 °C, heating is switched on however to protect the room against frost  

The setpoints for Protection mode can be changed by your HVAC installer if desired:  

Changes made by installer: Frost protection: ________ °C / °F Heat protection: __________ °C / °F  

Selecting Energy Saving mode  

In Energy Saving mode, the room temperature is maintained at a lower or higher setpoint, thus saving  

energy and money.  

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When selecting Energy Saving mode, make sure parameter P02 is set to 2  

Press the operating mode button until appears  

You can change the preselected setpoint by adjusting parameters P11 and P12  

(for parameter settings, see reverse side)  

Important: The setpoint for Energy Saving mode can be set to OFF. This means that the thermostat is  

deactivated! Risk of frost, i.e. no protective heating or cooling function is provided.  

Energy saving tips without sacrificing comfort:  

• Air out rooms for short periods of time only, but properly, with the windows wide open  

• Never allow the room temperature to exceed 21 °C (70 °F) through heating, and to fall below 25.5 °C (78 °F) through  

cooling  

Button lock  

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To lock or unlock the buttons manually, press and hold the right button for 3  

seconds. The buttons can be locked or unlocked in this manner if P14 is set to 2  

If P14 is set to 1, the thermostat automatically locks the buttons 10 seconds after  

the last adjustment  

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General	Details
Name	SIEMENS RDG400 Room Thermostat Instruction Manual
Make	SIEMENS
Language	English
Filetype	PDF (Download)
File size	0.18 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• SIEMENS

SIEMENS RDG400 Room Thermostat Instruction Manual Overview

Summary of Contents

• Page 1: Operating instructions for RDG400, the electronic room thermostat that allows you to set the ideal room temperature. The thermostat satisfies individual needs in Comfort, Energy Saving, and Protection modes. Room temperature can be displayed in degrees Celsius or Fahrenheit. In Comfort mode, the setpoint can be adjusted with the rotary knob. Protection mode activates heating if the room temperature falls below 8 °C to protect against frost. Energy Saving mode maintains a lower or higher setpoint to save energy and money. The setpoint for Energy Saving mode can be set to OFF, deactivating the thermostat. To lock or unlock the buttons, press and hold the right button for 3 seconds. The thermostat can automatically lock buttons after 10 seconds if set accordingly. Energy saving tips include airing out rooms briefly and maintaining specific temperature ranges.
• Page 2: Temporary timer for extended presence or absence The Comfort and Energy Saving modes can be temporarily extended by 0.5 to 9.5 hours using the temporary timer. To set the temporary timer, press and hold the operating mode button for maximum 3 seconds. Turn the rotary knob clockwise to extend Comfort mode. Turn the rotary knob counterclockwise to extend Energy Saving mode. The temporary timer function is aborted whenever a new setting is made. Changing from heating to cooling mode can be done automatically or manually. To select cooling or heating manually, press the operating mode button until the desired mode appears. To change control parameters, press both buttons simultaneously for at least 3 seconds. Select the required parameter by turning the rotary knob. The control parameters displayed depend on the DIP switch settings made.