Transitioning from traditional refrigerants to A2Ls requires careful planning and adaptation of existing systems to enhance energy efficiency and comply with new regulations that aim at reducing greenhouse gas emissions. It’s necessary to thoroughly assess the existing components and apply correct installation techniques to safely carry out the process and properly prepare the system for an A2L refrigerant. Keep reading to learn more about how to retrofit a system for A2Ls. 

Do I need new tools for A2L refrigerants?

When it comes to tools, many will remain the same, particularly those that don’t come in touch with the refrigerant circuit. However, other tools will need to be updated or replaced to meet specific requirements. 

For example, because A2Ls typically operate at different pressure levels compared to traditional refrigerants, it’s necessary to apply tools that are designed for working with low-pressure systems. It’s also essential to use tools that prevent leaks, such as high-quality torque wrenches and flaring tools. 

In addition, as A2Ls are mildly flammable, safety equipment like personal protective gear and specialized recovery machines also need to be updated to align with the new standards. 

How to retrofit an existing system for an A2L refrigerant?

Before starting the process at all, it’s necessary to first assess the current system and see if it’s compatible with A2Ls and whether components such as compressors, evaporators, condensers, and piping can handle the required operating pressures and temperature ranges. Once this is established, you can proceed with the following steps:

Leak detection and sealing

Because A2Ls are classified as flammable, it’s important to make sure there are no leaks within the system. For a thorough assessment, it’s best to use specialized leak detection tools and pay special attention to the areas where refrigerant is stored or transferred. By sealing or replacing worn-out valves, gaskets, and joints, it’s possible to prevent any refrigerant from escaping into the environment. 

Replacing non-compatible components

Many older systems will probably contain certain components that aren’t suitable for use with A2Ls. For example, a system may require new pressure switches, gauges, or safety valves that are specifically designed to handle the properties of A2Ls. It may also be necessary to upgrade electrical components such as relays and switches to reduce the risk of sparks. 

Adjusting the charge

To set the appropriate charge level, it’s necessary to consult manufacturer’s guidelines and local regulations to determine the proper amount of refrigerant for the system. Overcharging or undercharging can cause the system to operate inefficiently or even damage it. 

System testing and commissioning

Once all the necessary changes have been implemented, the system must undergo thorough testing, including checking for leaks again, verifying pressure and temperature readings, and making sure all safety mechanisms function properly. When the system passes these checks, it can be commissioned for regular operation with an A2L. 

Training and certification

Finally, make sure that anyone working on the system is properly trained and certified to handle A2Ls in order to ensure safety for all sides involved as well as compliance with regulations. 

Our professionals can help you shift to an A2L refrigerant with ease

The Gustave A. Larson company is your trusted ally who can provide you with comprehensive guidance on low GWP refrigerants and help you navigate the regulatory changes with great commitment, whether you’re operating commercial or residential systems. We’re here to share our extensive knowledge and experience, providing you with the necessary tools to successfully implement the required changes and stay in compliance with the latest regulations. Get in touch with our dedicated experts and reap all the benefits of working with our crew!