The Belimo LR24A-MP Rotary Actuator is a standout component in the HVAC industry, renowned for its precision, reliability, and seamless integration with Air Handling Units (AHUs). This blog explores the key features, specifications, and applications of the LR24A-MP, its role in AHU systems, and the benefits it delivers in terms of energy efficiency and performance. We also highlight a real-world case study demonstrating its impact on an AHU system and answer commonly asked questions about the actuator. Whether you're upgrading your AHU or seeking efficient components for your HVAC systems, this guide provides valuable insights to help you make an informed decision.

Introduction to the Belimo Rotary Actuator

In the ever-evolving HVAC industry, choosing the right components is crucial for achieving efficiency, reliability, and precision. The Belimo Rotary Actuator, particularly the LR24A-MP model, stands out as a market leader in performance and adaptability. This industry-leading actuator is designed to deliver exceptional control in a range of HVAC applications, especially in Air Handling Units (AHUs). At iACS, we recognise the importance of reliable components like the Belimo LR24A-MP in optimising your HVAC systems.


Features and Specifications of the Belimo LR24A-MP
Belimo LR24A-MP rotary actuator with 5 Nm torque, a 24V AC/DC model for ball valves.

The Belimo LR24A-MP Rotary Actuator is built for precision and durability. Here’s what makes it a standout choice for HVAC professionals:

  • Torque: 5 Nm – suitable for small and medium dampers.
  • Voltage Compatibility: Operates on AC/DC 24V, providing energy-efficient performance.
  • Communication: MP-Bus protocol for seamless integration with building automation systems.
  • Control Signal: Works with modulating, floating, or 3-point control signals.
  • Fail-Safe Functionality: No fail-safe ensures efficient energy use in non-critical applications.
  • Compact Design: Its lightweight build allows easy installation in space-constrained environments.


Belimo has long been synonymous with reliability and innovation, and the LR24A-MP continues to set the benchmark for rotary actuators in the HVAC industry.


Applications in Air Handling Units (AHUs)

An infographic illustrating the essential components of an Air Handling Unit (AHU), including sensors, actuators, variable speed drives, valves, and an AHU control panel.

When it comes to Air Handling Units, precision control of airflow and temperature is critical for maintaining indoor air quality and energy efficiency. The Belimo LR24A-MP integrates seamlessly into AHU systems, controlling dampers with accuracy and ensuring optimal airflow regulation.

Key AHU Applications:

  1. Damper Control: Ideal for controlling outdoor air, return air, and exhaust air dampers in AHUs.
  2. Zoning: Enables precise zone control in HVAC systems for energy efficiency.
  3. Integration with Building Management Systems (BMS): The MP-Bus communication protocol ensures smooth connectivity with advanced AHU control panels.

By incorporating the Belimo LR24A-MP into your AHU, you can achieve enhanced performance, reduced energy consumption, and long-term reliability.


Case Study: Belimo LR24A-MP in an AHU System

In a recent commissioning project, the Belimo LR24A-MP Rotary Actuator was used alongside dampers that control airflow through a cooling coil within an Air Handling Unit. While the actuator itself was not directly part of the cooling coil, its role was critical in managing the airflow that determines the efficiency of the cooling process. The precise modulation provided by the LR24A-MP ensured stable airflow, which improved the cooling performance of the AHU while maintaining energy efficiency. This real-world application highlights how the actuator contributes to overall system optimisation, demonstrating its essential function in modern HVAC setups.


Benefits of Using the Belimo LR24A-MP in HVAC Systems

Investing in the right rotary actuator can make a significant difference to the performance of your HVAC system. Here are the standout benefits of the Belimo LR24A-MP:

  1. Energy Efficiency: The actuator’s modulating control minimises energy wastage, contributing to lower operational costs.
  2. Precise Control: Smooth operation and accurate positioning improve system performance.
  3. Easy Integration: Compatible with a wide range of HVAC setups, particularly AHUs equipped with MP-Bus-enabled control systems.
  4. Reduced Maintenance: High-quality materials and engineering ensure a long lifecycle with minimal upkeep.
  5. Compact and Lightweight: Makes installation and retrofitting straightforward, even in tight spaces.

These benefits make the Belimo LR24A-MP a preferred choice for HVAC professionals seeking long-term value.


Commonly Asked Questions about the Belimo Rotary Actuator

What makes the Belimo LR24A-MP different from other actuators?

Belimo LR24A-MP Rotary Actuator installed on HVAC duct system, showing wiring and mounting on insulated pipe — energy-efficient control solution for air handling units.

The LR24A-MP offers advanced MP-Bus communication for seamless integration with modern building management systems. Its modulating control signal ensures precise airflow regulation, making it a reliable choice for AHUs.


Is the Belimo LR24A-MP compatible with older HVAC systems?

Yes, the actuator’s flexible control signal options (modulating, floating, or 3-point) make it compatible with both new and existing systems, making it a versatile solution for retrofitting projects.


What is the maintenance requirement for the LR24A-MP actuator?

The actuator is designed for low-maintenance operation, with durable components that ensure long-lasting performance. Regular system inspections are recommended for optimal operation.


Can this actuator handle high-torque applications?

The LR24A-MP provides 5 Nm of torque, making it suitable for small to medium dampers. For higher torque requirements, consider other models in the Belimo range.


How does MP-Bus communication benefit HVAC systems?

MP-Bus simplifies wiring and enables advanced diagnostic capabilities, allowing HVAC professionals to monitor and adjust performance efficiently.


Why Choose iACS for Your HVAC Solutions?

At iACS, we specialise in providing tailored solutions for Air Handling Units and distributing a wide range of HVAC components, including Belimo actuators. Here’s why we’re the trusted partner for HVAC professionals:

  • Expertise in AHU Control Panels: We manufacture custom AHU control panels designed to enhance system performance.
  • Extensive Inventory: Our ecommerce platform offers over 6,000 HVAC parts, including actuators, valves, and sensors, from industry-leading brands like Belimo.
  • Technical Support: Our team of HVAC specialists is on hand to guide you in selecting the right components for your AHU systems.
  • Global Distribution: We supply HVAC parts worldwide, ensuring quick and reliable delivery.


Purchase This Product at Our Online Store Today

Ready to enhance your HVAC system with the Belimo LR24A-MP Rotary Actuator? Purchase this industry-leading actuator today on our online store for seamless integration and optimised performance. With iACS, you get guaranteed quality, technical support, and reliable delivery worldwide.