Hey all,

My cascade design is requiring 3 compressors with compression ratios above 10. Running refrigerants 507, 170, and 14.

What compressors have you been working with for evaporator loads exceeding 300 watts? When I search manufacturer websites no one rates a compressor that is made for R14, but I've seen plenty of pics with people running R14.

Are you guys just working outside the manufacturer specs for refrigerants?