Berker RT Touch Sensor with Room Temperature Control and Display

Safety Warnings

❗ Attention: Electrical equipment must be installed and fitted by qualified electricians only and in strict observance of the relevant accident prevention regulations. Failure to observe any of the current regulations and the instructions set out below may result in fire and in other hazards.

1. Overview

These instructions apply to Berker touch sensors with room temperature controller and display (referred to as "RT touch sensor") in 2-key, 3-key, and 5-key designs.

1.1 Functional Description

The RT touch sensor integrates touch sensor, room temperature controller, and room temperature timer clock functions into a single housing, enabling control of various building functions. Its capabilities depend on programming and other devices within your EIB installation. The sensor is adaptable to individual needs and building functions; user and fitter agreement on its operation is recommended.

Display Functions:

• Room temperature and/or outside temperature and reference temperature value
• Simple and fast adaptation of room temperature
• Day of the week and time of day (requires EIB DCF77 clock)
• Adaptation of reference temperature values for different operating modes
• Local programming of the room temperature timer clock

Function Keys:

• Switching and dimming of lighting
• Opening/closing and positioning of blinds and shutters
• Recalling and storing of 8 light scenes
• Transmitting temperature and brightness values
• Defining operating modes for the room temperature controller
• Activating/deactivating the room temperature timer clock

LED Functions:

• Status display or display of pressed key
• LED on or off

1.2 Control and Display Elements

The controls are described based on the 3-key model. Control elements are arranged horizontally, consisting of a right and a left key.

Control Element Overview:

• 1 Display keys: Used for setting values (e.g., reference temperature) and programming the room temperature timer clock (see Chapter 4).
• 2-4 Function keys: Support pushbutton and rocker-button functions (switching, dimming, shutter control, etc.).
• 5 Operation LED (white): Indicates the ready-for-operation state (programmable).
• 6 Status LED (red): Displays status or indicates a pressed key.

Diagram Description: The device features display keys (1) for value adjustment and programming, and function keys (2-4) for various operations. An operation LED (5) indicates readiness, and a status LED (6) shows system status or key presses. The numbers 1-7 above the diagram refer to display symbols explained later.

2. Operation

2.1 Function Keys

Keys function as rockers (right/left press) or pushbuttons (center press) for switching and value transmission, with programmable responses. For dimming and shutter control: Brief press: Switches lighting or controls shutter movements. Long press: Dims lighting (stops on release) or moves shutters (stops when limit is reached or key is briefly pressed).

2.2 Display Keys and Room Temperature Controller

The room temperature controller is operated via display keys and the bus. Single display key press: Selects/changes menu items or adjusts values. Both display keys pressed simultaneously: Adopts the set value (="ENTER"). Function key press: Moves to the next higher menu without adopting the value (="ESC"); repeated presses return to the basic screen. No key activity for 20 seconds: Rejects the set value and returns to the previous menu or basic screen.

2.3 Display Symbols

Symbols indicate current status and operating modes: "Comfort" mode, "Standby" mode, "Night-time" mode, "Comfort" mode extension ("night-time" mode), "Frost/heat protection" mode, "Comfort" mode extension ("frost/heat protection" mode), cooling system condensation indicator, reference value change indicator, disabled function indicator, timer clock active indicator, reserved indicator, heating on indicator, cooling on indicator, actual room temperature display, actual outside temperature display (requires EIB sensor), and weekday indicators (1-7).

2.4 Basic Screen

The basic screen typically displays the current time (with weekday) and room temperature. It may also show outside temperature and reference temperature, cycling through these at fixed intervals. Pressing any function key returns to the basic screen.

2.5 Changing the Room Temperature

Reference temperature values set for operating modes can be adjusted. Important: The "Frost/heat protection" value is fixed. Steps: From the basic screen, press the right or left display key to show the "Reference value" display. Use the right or left display key to adjust the value in 0.5°C steps. The new value is adopted immediately. Pressing a function key (ESC) or inactivity for 20 seconds returns to the basic screen. A hand symbol ✍️ indicates the reference value has been changed. Changes to reference values upon mode changes depend on programming.

2.6 Main Menu

Press both display keys from the basic screen or reference value screen to enter programming mode and access the main menu. Navigation: Press left/right display key to move to the next main menu item. Press both display keys (ENTER) to enter a submenu (if enabled). Press a function key (ESC) to return to the basic screen or the previous menu level. Main Menu Sequence: Operating mode change-over, Heating reference value setting, Cooling reference value setting, Room temperature timer clock programming, Room temperature timer clock on/off, Activation of keylock function, Contrast setting. Menu items may vary based on programming and installed features.

3. Room Temperature Controller

Functioning

The RT touch sensor compares the actual room temperature to the preset reference temperature to control heating/cooling valves. The reference temperature varies by operating mode.

3.1 Operating Modes

To manage energy consumption and comfort, the sensor supports several modes: "Comfort": Normal daytime use. "Standby": For brief absences, temperature lowered by approx. 2°C. "Night": For nighttime use, temperature lowered by approx. 4°C (restricted use). "Frost/heat protection": For prolonged absences. The integrated timer clock can help manage transitions between modes.

3.2 Changing the Operating Mode

Modes can be changed manually (via menu or function keys) or automatically via timer clock. Manual Change Steps: Enter the main menu (press both display keys from basic screen). Select "Operating mode change-over" and press ENTER. Choose the desired mode by pressing display keys (left/right to cycle, both to confirm). Press a function key to exit.

3.3 Enlarged Operating Modes

"Comfort mode extension" allows maintaining comfort settings temporarily, even when an automatic mode change is scheduled (e.g., for extended evening activities or delayed holiday departures). This extension is time-limited and reverts to the original mode afterward.

3.4 Changing the Reference Temperature

Reference temperatures for "Comfort", "Standby", and "Night" modes can be adjusted. Important: The "Frost/heat protection" value is fixed to protect the system. Steps: Enter the main menu. Navigate to "Reference value adjustment for heating [cooling]". Press ENTER. Select the desired operating mode (Comfort, Standby, Night) in sequence. Press ENTER to select the mode's submenu. Use display keys to adjust the temperature in 0.5°C steps. Press ENTER to save or a function key to cancel.

4. Room Temperature Timer Clock

Allows programming up to 28 switching times to control room temperature based on operating mode, weekday, and time. Example Week Program:

4.1 Setting the Room Temperature Timer Clock

Pre-programmed times can be adapted. Steps: Enter the main menu. Navigate to "Room temperature timer clock programming". Press ENTER. Select memory location, weekday, time (hour/minute), and operating mode. Use display keys to adjust settings. Press ENTER to save or a function key to cancel. Important Notes: Weekdays are numbered 1-7 (MON-SUN). "CLR" deletes a memory. The timer clock must be activated (Chapter 4.3).

4.2 Deleting an Existing Switching Time

Steps: Enter main menu. Navigate to "Room temperature timer clock programming". Press ENTER. Select the memory location to delete and press ENTER. In the weekday selection, display "CLR" and press ENTER.

4.3 Activating and Deactivating the Timer Clock

The timer clock's programming is unaffected, but its operation can be switched on or off. Steps: Enter main menu. Navigate to the "Timer clock" symbol, which shows "on" or "off". Press both display keys (ENTER) to switch between "on" and "off". ON: All programmed times are executed. OFF: The current operating mode remains active until manually changed.

5. Disabling the RT Touch Sensor

5.1 Keylock

Prevents accidental operation (e.g., by children). When active, all function keys are locked. Steps: Enter main menu. Navigate to the "Key" symbol, showing "on" or "off". Press both display keys (ENTER) to switch keylock on or off. Important Note: Keylock remains active after bus voltage reset. It is deleted only upon sensor reprogramming.

5.2 Operation Level – Disabling of Menus

Menus can be disabled/enabled to simplify operation. A key symbol indicates disabled functions. Menu levels: Level I: Allows reference temperature adjustment only; no other menus accessible. Level II: Allows access to operating mode changes and temperature settings (heating/cooling). Level III: Provides access to all menus if enabled in software.

6. Setting the LCD Contrast

Adjust contrast for readability in different lighting conditions. Steps: Enter main menu. Navigate to "co:" followed by the current contrast setting. Press both display keys (ENTER); the value flashes. Use left/right display keys to adjust contrast. Press a function key to finish.

7. Only for the Electrical Fitter

7.1 General System Information

This device is part of the instabus-KNX/EIB system. Detailed technical knowledge from instabus training is required. Software dictates functionality; details are available from the manufacturer's product database. Planning, installation, and commissioning use KNX-certified software. Updates are available at www.berker.de.

7.2 Fitting Location

Ensure air circulation around the sensor for accurate room temperature measurement. Avoid covering the sensor, placing it near draughts, direct sunlight, or heat/cooling appliances. Fit at eye level for display readability, avoiding glare.

7.3 Fitting Instructions

3-key and 5-key sensors have an additional screw hole for wall mounting. Use the supplied screw/plug set. An anti-theft locking screw secures sensors on the bus coupler. The inscription label can be detached to access these.

7.4 Mounting of Touch Sensors without Integrated Bus Coupler

Requires a flush-mounted bus coupler (order no. 7504 00 01). Install coupler, assign physical address using commissioning software, plug in the touch sensor, and connect via the user interface. Secure with the locking screw.

7.5 Mounting of Touch Sensors with Integrated Bus Coupler

Mount the support ring, connect the bus to the sensor, switch on bus voltage, and assign a physical address (using the programming lever). Switch off bus voltage, attach sensor and frame, secure with the screw, and reattach the labelling panel.

7.6 Advice on Commissioning

For programming, connect sensors without bus couplers to the coupler. After programming, the bus coupler and sensor form a combined unit. The device displays ID code and software version briefly upon connection. Adapt the sensor to the control loop for accurate temperature readings. Perform function checks and note the physical address.

7.7 Removal

For sensors with integrated bus couplers, switch off bus voltage first to prevent damage. Loosen safety and retaining screws. Deactivate any anti-theft alarm before dismantling.

8. Annex

Troubleshooting

Assignment of Keys

Warranty

Berker reserves the right to make technical and formal changes. Products are under statutory guarantee. For warranty claims, contact the point of sale or ship the device with a fault description to the appropriate regional representative. For queries, contact THE KNX HOTLINE at +49 6842 945 9705. Please retain these instructions for the customer. For more information: Berker GmbH & Co.KG, Zum Gunterstal, 66440 Blieskastel/Germany. Tel: +49 6842 945 0, Fax: +49 6842 945 4625, E-Mail: info@berker.de, www.berker.com.

Operation Overview

The operation overview illustrates the device's menu structure and navigation. Basic Screen: Displays time, outside temperature, room temperature, and reference temperature. Navigation options include ENTER/ESC to access Level I (Reference Temperature Adjustment) or Level II (Operating Mode Change-over). Level I: Allows adjustment of reference temperatures for heating and cooling for "Comfort", "Standby", and "Night" modes. Values are adjusted in 0.5°C steps. Level II: Enables changing the operating mode to "Comfort", "Standby", "Night-time", or "Frost/heat protection". This level also provides access to sub-menus for Timer Clock Programming, Timer Clock Activation/Deactivation, Keylock, and LCD Contrast settings. Level III: Accessed from Level II, this level contains the detailed programming options for the timer clock (setting specific times, weekdays, and modes), activating/deactivating the timer clock, setting the keylock function (on/off), and adjusting the LCD contrast. Navigation between levels and within menus is primarily done using the display keys (left/right to cycle, both to confirm/enter) and function keys (ESC to go back).