ABB CAR/U4.1.1.1-84 Caldion Room Temperature Controller

Description

Introduction

The ABB Caldion Room Temperature Controller (SKU: CAR/U4.1.1.1-84) is designed for climate regulation in commercial and residential fan coil unit (FCU) applications. Available for standalone operation or direct integration as a KNX device featuring an integrated bus coupling unit, this flush-mounted panel fits standard BS mounting boxes while offering intuitive local control. Explore more ABB KNX products for professional building automation projects.

Because technical data richness for this specific reference is limited, systems integrators, electrical contractors, and procurement professionals must verify exact bill-of-quantities (BOQ) specifications against official manufacturer documentation. Confirming part numbers and control topologies prior to purchasing ensures seamless installation and prevents ordering errors on your project.

Key Features

• ABB Caldion series model CAR/U4.1.1.1-84 room temperature controller.
• Flush-mounted design compliant with BS standard mounting boxes.
• Integrated KNX bus coupling unit (BCU) for direct KNX panel integration.
• Built-in internal room temperature sensor.
• 2 binary inputs for window position, dewpoint, or condensate alarm signals.
• Integrated actuator outputs supporting on/off or 0-10V valve control.
• 3 x fan speed control outputs.
• Dedicated capacitive touch RTC control button and frameless display design.

Benefits

• Versatile HVAC System Support: Compatible with 2-pipe, 2-pipe with electric heater, or 4-pipe fan coil unit configurations.
• Flexible Integration Options: Operates as a standalone room controller or connects directly into KNX installations via its integrated bus coupling unit.
• Integrated Local Sensing: Features a built-in temperature sensor alongside dedicated capacitive touch RTC control buttons for mode operation.
• Comprehensive Safety Inputs: Equipped with 2 binary inputs designated for window status, dewpoint sensing, or condensate alarm monitoring.
• Flexible Actuator and Fan Control: Supports integrated actuator output control for on/off or 0-10V valves along with 3-stage fan speed control.
• Modern Aesthetic Design: Features a clean, frameless visual design paired with a large display to complement contemporary room interiors.

Applications

• Fan Coil Unit Climate Control: Climate regulation across 2-pipe, 2-pipe with electric heater, or 4-pipe FCU building automation systems.
• KNX Building Automation: Flush-mounted wall panel integration for KNX installations requiring integrated bus coupling and local temperature control.

Installation Notes

• Mounting Requirements: Designed specifically for flush-mounted installation matching standard BS junction boxes.
• Wiring and Terminal Check: Connect external monitoring devices to the 2 binary inputs (window, dewpoint, or condensate alarm) and route outputs for 3 fan speeds and 0-10V or on/off valve actuators.
• Procurement Verification: Verify exact SKU CAR/U4.1.1.1-84 specifications using official manufacturer documentation to ensure absolute BOQ alignment before installation.

Developer Resources

• Official Manufacturer Product Link: https://new.abb.com/products/en/2TAZ740010R0001/car-u4-1-1-1-84

FAQ

What fan coil unit systems are compatible with the ABB CAR/U4.1.1.1-84?

It supports 2-pipe, 2-pipe with electric heater, and 4-pipe fan coil unit systems. For certificates and current technical files, refer to the official product documentation.

Does the ABB Caldion CAR/U4.1.1.1-84 require a separate KNX bus coupler?

No, it features an integrated KNX bus coupling unit, allowing direct connection to the KNX bus or standalone functionality.

What function do the binary inputs serve on this room temperature controller?

The 2 binary inputs are dedicated for connecting window contacts, dewpoint sensors, or condensate alarms.

What type of valve control does the unit support?

It provides integrated actuator output control for either on/off or 0-10V valve actuators.

How can I avoid wrong orders for this product?

Double-check the exact SKU CAR/U4.1.1.1-84 against your project BOQ and consult official ABB technical documentation prior to purchasing.

What is the exact product model?

The order/model code for this page is CAR/U4.1.1.1-84. Match it against project documents before purchase.

Conclusion

The ABB Caldion CAR/U4.1.1.1-84 offers a modern, frameless room temperature control solution tailored for 2-pipe, 2-pipe with electric heater, and 4-pipe fan coil units. With built-in capacitive touch controls, binary safety inputs, and an integrated KNX bus coupling unit, it bridges standalone usability and full KNX system automation. Installers and system integrators can review our dealer and project support options.

Given the limited data richness for this specific reference, ensure that your technical team cross-references the project BOQ with official manufacturer documentation at knxbazzar.com before finalizing your procurement order.