EU-R-X

Device Description

• Room temperature control
• Air humidity measurement
• Timed heating program
• Floor temperature control (when using an NTC floor sensor)
• Dedicated LCD display, without backlight
• Wired TECH SBUS communication
• Mechanical buttons

The R-X room controller is designed for systems based on wired TECH SBUS communication: L-4x Wi-Fi, L-X Wi-Fi, and L-12.

Connection and Communication

Registration – The button located on the back of the device is used to register the controller in the system. Pressing it initiates the pairing process with the central unit. Once registration is successfully completed, the controller display will show a confirmation message.

Termination – The termination switch allows you to set the controller’s position in the system’s transmission line. Depending on the device’s location, set the switch to the appropriate position:

ON – if the controller is at the end of the line
1 – if the controller is in the middle of the line

Power and Communication – On the back of the controller, there is a connector for:

GND, +5V – power supply from the 5V bus
A, B – TECH SBUS communication with the bus
Floor sensor – used for measuring floor temperature

Floor Sensor Installation

The sensor should be installed in the top layer of the screed – directly under panels or tiles. For easier installation and maintenance, it is recommended to place it inside a protective conduit.

To ensure accurate measurement and avoid thermal bridges, it is advisable to install the sensor approximately 100 cm from the wall. The sensor maintains floor comfort and protects it from overheating, regardless of the room temperature.

Device Dimensions

The R-X controllers are designed to be compact. With precisely selected dimensions, the devices fit perfectly into standard mounting boxes, ensuring an aesthetic finish and seamless integration.

Dimensions Details:

• Size: 80,5x80,5x21mm
• Mounting type: Surface-mounted (with the option to install in 60mm boxes)