In the dynamic world of HVAC systems, precision, reliability, and energy efficiency are non-negotiable. At the forefront of this evolution is the Belimo Rotary Actuator, a vital component in ensuring seamless operation of Air Handling Units (AHUs), dampers, and other critical HVAC equipment. Today, we delve into the key features and benefits of this industry-leading actuator and explore why it remains a trusted choice for HVAC professionals worldwide.

What is a Belimo Rotary Actuator?Close-up view of Belimo LR24A-MP Rotary Actuator connected to HVAC ductwork, highlighting advanced control features and MP-Bus connectivity for efficient air handling operation.

A rotary actuator is an electromechanical device that controls the movement of dampers, valves, or louvers within an HVAC system. The Belimo Rotary Actuator is engineered for precision and longevity, offering exceptional control over airflow, ensuring optimal system performance, and reducing energy wastage.


Key Features of the Belimo LM24A

The Belimo LM24A is a standout model in the Belimo range, designed to meet the rigorous demands of modern HVAC systems. Key features include:

  1. Torque and Speed: With a torque rating of 5 Nm and an operating time of 150 seconds, this actuator is perfect for small to medium damper sizes.
  2. Voltage Compatibility: Operates efficiently on both AC and DC 24V, providing flexibility in diverse installations.
  3. Compact Design: Its sleek form factor ensures easy installation, even in tight spaces.
  4. Manual Override: Allows for manual adjustment during installation and maintenance.
  5. Energy Efficiency: Built to consume minimal power without compromising performance.


Benefits of the Belimo Rotary Actuator in HVAC Systems

  1. Enhanced System Performance: Ensures precise control over airflow and damper positioning.
  2. Longevity: Built with durable materials to withstand demanding HVAC environments.
  3. Ease of Integration: Compatible with most AHU configurations and HVAC control systems.
  4. Energy Savings: Reduces system energy consumption, aligning with green building standards.


Installation Tips for the Belimo LM24A

For optimal performance, follow these tips during installation:

  1. Ensure Compatibility: Confirm that the LM24A’s torque and voltage specifications match your system requirements.
  2. Secure Mounting: Install the actuator firmly on the damper shaft, ensuring there’s no play or misalignment.
  3. Use Manual Override: Test damper movement using the manual override feature before connecting power.
  4. Check Wiring: Follow the wiring diagram provided by Belimo to avoid electrical issues.
  5. Calibration: Ensure the actuator’s positioning matches the damper’s full-open and full-closed positions.

Belimo LM24A wiring diagram showing open-close control and 3-point control configurations with connection notes and direction of rotation indicators – iACS UK HVAC installation guide.


Comparing the Belimo LM24A with Other Actuators in the Belimo Range

Feature

LM24A

LM230A

SM24A

NM24A

Torque

5 Nm

5 Nm

20 Nm

10 Nm

Voltage

AC/DC 24V

AC 230V

AC/DC 24V

AC/DC 24V

Runtime

150s

150s

75s

150s

Application Size

Small to Medium

Small to Medium

Large Dampers

Medium Dampers

 

The LM24A is ideal for small to medium dampers requiring AC/DC 24V operation. For larger dampers, the SM24A provides higher torque and faster runtime, while the LM230A is suitable for applications requiring AC 230V.


Real-Life Case Study: The LM24A in Action
Belimo LM24A Rotary Actuator installed in an outdoor HVAC control box, showcasing precision damper control and reliable actuator performance for air handling systems.

To wrap this blog post up, let’s take a look at some real-life examples of how the Belimo LM24A has been successfully implemented in our projects on-site for commissioning.

Below is a picture of an LM24A fitted on a damper of an AHU. We successfully commissioned this project in March 2024. As part of the system start-up, we ensure that the dampers are fully open before activating the fans of the AHU.

If you recall, the actuator is used to manage dampers in HVAC applications and systems. To control the damper, this kind of actuator turns it by a rotary motion. This is designed to rotate a valve or damper in a circular motion. Belimo’s 5-year warranty gives our engineers assurance that the system will work reliably for years once we’ve completed the job!


Why Choose iACS for Your Belimo Actuator Needs?

At iACS, we understand that selecting the right actuator can significantly impact your HVAC system's efficiency and reliability. Here’s why we’re the trusted choice:

  • Expertise in AHU Systems: With decades of experience, we specialise in AHU control panels and HVAC components.
  • Comprehensive Inventory: Our online store features a vast selection of actuators, including the Belimo LM24A.
  • Customer-Centric Approach: We’re here to assist you in selecting the ideal product for your system.
  • Global Reach: Our ecommerce platform allows us to deliver HVAC parts to professionals worldwide.


Purchase This Product at Our Online Store Today

Investing in the Belimo LM24A Rotary Actuator is a step towards enhanced efficiency and reliability in your HVAC systems. With features designed to tackle modern challenges and a proven track record of excellence, this actuator is an invaluable addition to any setup.

Damper actuator for operating air control dampers in ventilation and air-conditioning systems for building services installations
Buy this product via our online store now to experience the iACS difference and elevate your HVAC system’s performance.