SLAAEQ2 September   2024 MSPM0G1506 , MSPM0G3507

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Example Mitigation Control Board Design
    1. 2.1 Overview of Mitigation Board Functions
    2. 2.2 Audible and Visible Detection Alarm
    3. 2.3 Freeze Detection (Water-Based Systems)
    4. 2.4 Isolation and or Safety Shut-off Valves (SSOVs) in the Refrigeration System to Limit Releasable Charge
    5. 2.5 Electronic Controls With A2L Logic to Perform Required Actions in The Event of a Leak — Such as Shutting off the Compressor and or Other Components
    6. 2.6 Ventilation and or Circulation Fans Within Cases or Walk-in Units
  6. 3Summary
  7. 4References

3 Summary

In summary, A2L refrigerants offer significant environmental benefits, including low global warming potential (GWP) and zero ozone depletion potential (ODP), along with improved energy efficiency compared to older refrigerants like R-410A and R-22. However, the mild flammability necessitates stringent safety measures, including the use of refrigerant detection systems (RDS) and mitigation boards, to prevent combustion risks. Adherence to safety standards like UL 60335-2-40 is crucial for making sure safe operation in HVAC systems, balancing the environmental advantages of A2L refrigerants with the need for rigorous safety protocols. TI offers a multitude of devices and reference designs to help accelerate the design process for mitigation control boards, offering designers better performance at lower cost.