Increasing R-290 Charge Limits Expand Its Potential
Because R-290 is classified as an A3 (flammable) refrigerant, the governing bodies that regulate the safe use of refrigerants in the U.S. have established a 150g maximum charge limit — making R-290 an ideal refrigerant for a wide variety of smaller, self-contained coolers and freezers.
Increasing R-290 charge limits above 150g would expand its potential applications in commercial refrigeration even further. A recent update to the Underwriters Laboratories’ (UL) second edition of its UL 60335-2-89 standard paves the way for higher R-290 charge limits.
Equipment Safety Drives R-290 Adoption
Modern refrigeration technologies have evolved to ensure equipment safety and support the use of R-290 in an expanding range of applications. Today, R-290 is primarily used in small, self-contained, reach-in display cases, beverage coolers, frozen drink machines, ice machines and ice cream freezers — all which feature a built-in condensing unit.
For more than a decade, Copeland has been producing R-290 rated compressors and condensing units to support self-contained refrigeration original equipment manufacturers (OEMs).