Description
Introduction
The ABB Caldion® Room Temperature Controller (CAR/U4.1.1.1-71, Product ID: 2TAZ740010R2001) is a flush-mounted room temperature controller engineered for precise HVAC management in fan coil unit systems, supporting 2-pipe, 2-pipe with electric heater, or 4-pipe system configurations. Featuring an elegant black frameless design with a large display and dedicated capacitive touch RTC control buttons, this device brings intuitive room climate interaction to modern commercial and residential KNX installations. Explore more ABB KNX products for professional building automation projects.
Designed to conform to British Standard (BS) flush mounting, the unit can be operated either as a standalone controller or integrated directly into a KNX bus system using its built-in bus coupling unit. It includes an integrated room temperature sensor, 2 binary inputs for status and alarm monitoring, actuator output control for on/off or 0-10V valves, and 3-step fan speed control.
Key Features
- ABB Extended Product Type CAR/U4.1.1.1-71 with Product ID 2TAZ740010R2001 in Black.
- Designed for BS standard flush-mounted installation.
- Integrated KNX bus coupling unit (BCU) for direct bus connection or standalone usage.
- Built-in ambient temperature sensor for accurate room climate regulation.
- 2 x binary inputs for window status, dewpoint monitoring, or condensate overflow alarms.
- Actuator control outputs supporting 0-10V or on/off valves and 3-stage fan speed control.
- Compact dimensions measuring 86.0 mm height x 86.0 mm depth/length x 16.0 mm width.
- ETIM 7 / ETIM 8 EC001101 standard classification for bus system room temperature controllers.
Benefits
- Versatile dual-mode operation allows standalone performance or seamless KNX integration via the built-in bus coupling unit.
- Comprehensive HVAC compatibility supporting 2-pipe, 2-pipe with electric heater, and 4-pipe fan coil unit systems.
- Flexible valve and fan outputs providing control for on/off or 0-10V valve actuators along with 3 x fan speed control settings.
- Integrated sensor and inputs including a built-in temperature sensor and 2 binary inputs for window contacts, dewpoint, or condensate alarms.
- Modern, user-friendly interface featuring a frameless black aesthetic with a large display and intuitive capacitive touch RTC buttons.
Technical Specifications
Applications
- Commercial offices, hotel guest rooms, and residential developments equipped with 2-pipe or 4-pipe fan coil units.
- Building automation projects requiring BS standard flush-mounted room temperature controllers with integrated KNX communications.
- HVAC setups requiring local safety monitoring via binary inputs for condensate switches, dewpoint sensors, or window contacts.
Installation Notes
- Designed for flush mounting in standard BS electrical boxes.
- Physical unit measurements are 86.0 mm x 86.0 mm with a shallow net width of 16.0 mm.
- Wiring and configuration details should be carried out according to official ABB Instructions and Manuals document reference 9AKK107492A7829.
- Ensure correct assignment of binary inputs for window position, dewpoint detection, or condensate alarms as designed in the system schematic.
Developer Resources
- Official manufacturer documentation for reference includes the CE Declaration of Conformity (9AKK107680A0352) and Instructions and Manuals (9AKK107492A7829). Additional verification and product details are accessible via the official ABB brand section on KNXbazzar (https://knxbazzar.com/knxshop/?brand=abb).
FAQ
What fan coil unit configurations are compatible with the ABB CAR/U4.1.1.1-71?
The CAR/U4.1.1.1-71 supports fan coil unit systems with 2-pipe, 2-pipe with electric heater, or 4-pipe configurations. For certificates and current technical files, refer to the official ABB documentation.
Does the ABB Caldion room controller require a separate bus coupling unit?
No, it features an integrated bus coupling unit for direct KNX bus connection, and can also function as a standalone controller.
What inputs and outputs are built into the device?
It includes a built-in temperature sensor, 2 binary inputs (for window, dewpoint, or condensate alarm), outputs for on/off or 0-10V valve control, and 3-speed fan control.
What are the mounting and physical dimensions of this model?
The controller is flush-mounted to BS standard, finished in Black, with net dimensions of 86.0 mm height, 86.0 mm depth/length, and 16.0 mm width.
What is the exact product model?
The order/model code for this page is CAR/U4.1.1.1-71. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by ABB.
Conclusion
The ABB Caldion® CAR/U4.1.1.1-71 Room Temperature Controller delivers an excellent combination of aesthetic frameless design and technical capability for 2-pipe and 4-pipe fan coil applications. Whether installed as a standalone unit or connected to a KNX network via its integrated BCU, it simplifies room climate management while maintaining strict compliance with CE standards. Installers and system integrators can review our become a KNX dealer options.
Explore our complete range of room control interfaces in the KNX panel category (https://knxbazzar.com/product-category/knx-panel/) or return to the main KNXbazzar shop (https://knxbazzar.com) for verified building control hardware.
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