Quote:
Originally Posted by gtojohn
I thought r209 is a drop in for r22. Very close to the same pressure temperatures. So new metering device. If its a piston that can be super quick. Sounds like you know your refrigeration. One of the reasons I found this site was the r209 info.
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It is R290, not R209... it's like the difference between fog and fgo.
If you have already an R22 system it is pretty much a drop in replacement. You don't even need to change the metering device.
oil pan 4 is starting off with a R410 system. I haven't tried this conversion, but the characteristics of R290 and R410 are not close. Different compressors, different lubricants, different HX sizes, different metering device sizes, different P-V curves.
There is someone on this forum who hasn't tried it either, who say it will work great.
That person isn't me.
-AC