Just to let people know that I am new to air conditioners. I am a journeyman Gasfitter with my goverment cfc's certification.
-takes flame suit off!-
I was working on a brand new carrier unit and was going to do superheat charge. My suction pressure would not go above 100 psi or 32f. (r-410a 12 seer) The superheat table provided by carrier had suction pressures no lower than 107 psi on the graph. outside temp was about 23c.
I guess my question is why I couldnt go above 100 psi on suction so i can do a proper superheat charge?
The evaporator has a fixed metering device..
Thanks for any info.