Quote:
Originally Posted by Geo NR Gee
Did I read somewhere that there is also someone making gauges that have the R290 refrigerant on them? In Australia?
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I have seen R290 Manifold Gauge sets on ebay, some for pretty cheap.
The ones I see there right now are pretty expensive.
A R22 set will be good for reading the pressures, but the pressures of R290 will be lower than for R22.
To do super heat and sub cool optimization, you will need a R290 PT chart, there's one on the manifesto thread, search for it.
I put a super heat and sub cool explanation in the thread too.
You might search the Internet for other explanations of the procedure. Sometimes reading how to do it from several sources makes it easier to understand.
-AC_Hacker