A2L A/Cs, Heat Pumps Will Require Refrigerant Detection Systems

摘要

Change is coming to the HVACR industry as state and federal regulations are being enacted that will lead to a phasedown of high-GWP refrigerants such as R-410A.Unlike the R-22 phaseout, which saw the transition from one A1 refrigerant to another, some of the new refrigerants being proposed to replace R-410A in air conditioning equipment are lower-flammability (A2L) refrigerants.Because of this A2L designation, special features will be incorporated into the air conditioning equipment itself to ensure safe operation, per safety standard UL 60335-2-40, third edition.One of those features is the refrigerant detection system (RDS), which will be required for all systems in an occupied space that exceed a prescribed refrigerant charge limit.In a recent webinar, AHRI invited several RDS manufacturers to discuss these devices in more detail.