Compiled by Eamonn Ryan from the 3rd SAIRAC Johannesburg Tech Talk online presentation by Edward Erasmus on the topic ‘Guided Approach to Applying UV-C to Mechanical Ventilation Systems’. This is an extension of the summary published in RACA August, and is Part 2 of a six-part series.

Integrating UV fixtures into HVAC systems can significantly enhance air quality and system efficiency.

Integrating UV fixtures into HVAC systems can significantly enhance air quality and system efficiency.

Continued from part 1…

Edward Erasmus, represents Sani UV-C, a company that specialises in UV-C application used across various applications including cold rooms, vehicle transportation, HVAC systems, and water systems.

Addressing common misconceptions

Many people confuse air conditioning with ventilation. Air conditioning systems provide thermal comfort but do not ensure fresh air supply. It’s vital to educate building occupants about the importance of proper ventilation to maintain a healthy indoor environment.

Safety and training

We provide comprehensive documentation and training for the safe use of UV fixtures. This includes supplying safety glasses, warning signs, and other necessary equipment. Proper installation and safety protocols are critical, especially in environments where UV exposure can pose risks.

“Integrating UV fixtures into HVAC systems can significantly enhance air quality and system efficiency. By conducting a thorough analysis of each application area, considering cost-benefit factors, and adhering to safety protocols, you can optimise your HVAC system’s performance. Our extensive range of fixtures and decades of experience ensure that we can provide tailored solutions for a wide variety of industrial applications,” says Erasmus.

Safety is paramount when dealing with UV installations in HVAC systems. Due to the varied applications of UV technology, comprehensive training specific to each application is crucial. Incidents, such as technicians getting sunburned from UV exposure due to inadequate warnings, highlight the need for stringent safety protocols.

Every UV device from our workshop undergoes rigorous testing and is accompanied by essential safety equipment and documentation. This includes:

  • Safety glasses: Provided to protect against UV exposure
  • Warning signs: Essential for alerting personnel to potential UV hazards
  • Handover documentation: Detailed instructions and safety guidelines

“Ensuring that all safety measures are in place protects both the technicians and the brand’s reputation.”

The presentation then moved to a Q&A session

Differences between package units and ducted systems

Q: What’s the difference between installing a package unit and a ducted system, particularly in environments like cinemas?

A: Package units: These are self-contained systems ideal for spaces requiring significant cooling capacity, such as large, open areas.

Ducted systems: These systems distribute air through a network of ducts, offering flexibility in installation and maintenance. They are generally preferred for their efficiency in managing heat loads and providing uniform air distribution.

Continue to part 3…