93-11-(1)-1USA: Emerson has now announced approval of the full range of low GWP refrigerant alternatives to R404A and R134a in Copeland Discuss and Scroll compressors.

The four refrigerants R448A, R449A, R450A and R513A have been added to Emerson’s important 93-11 document – the document which lists all refrigerants and lubricants approved by Emerson for its Copeland compressors.

R449A is a replacement for R404A and R507A. It is a blend of R32 (24.3%), R125 (24.7%), R1234yf (25.3%) and R134a (25.7%) with a GWP of 1397. It is non-flammable and non-toxic with an A1 safety classification.

R448A is Honeywell’s non-flammable, non-toxic AI refrigerant to replace R404A, sold under the trade name Solstice N40. It uses the same components as DuPont’s R449A with the addition of a small amount of R1234ze(E). Its composition is R-32 (26%), R125 (26%), R1234yf (20%), R134a (21%) and 1234ze(E) (7%). GWP  is around 1273.

Honeywell’s R450A (N13) and DuPont’s R513A (XP10)  are replacements for R134a.

R513A is a binary mixture of R134a (44%) and R1234yf (56%). It has a GWP of around 630 and carries the ASHRAE safety classification of A1.

A blend of 42% R134a and 58% HFO1234ze(E), R450A is non-flammable, has a zero ODP and a GWP of about 601.

The 93-11 document can be downloaded here.