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  1. #1
    Join Date
    Apr 2004
    Location
    Fort Worth, Texas, United States
    Posts
    86
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    i know that superheat is heat added to a vapor if you were checking dis. s.h. would you take dis. pressure convert to temp on chart and then read actual temp of dis. line?

  2. #2
    Join Date
    Feb 2003
    Location
    Wichita Ks
    Posts
    1,518
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    yes you got it. same way as suction superheat

  3. #3
    Join Date
    Apr 2004
    Location
    Fort Worth, Texas, United States
    Posts
    86
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    thanks for the reply.what are the parameters of normal discharge superheat and the causes of high and low temps

  4. #4
    Join Date
    Feb 2003
    Location
    Wichita Ks
    Posts
    1,518
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    depends on what type of compressor. for an example a trane rtha will run low 20's at full load. carrier gx will go for 22 degrees at any load. on recips i like the discharge temp not to be any higher than 200 degrees when fully loaded. always check the manufactor specs on the machine.

  5. #5
    Join Date
    Oct 2002
    Posts
    79
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    I think for R-22 A/C a discharge superheat between 50 and 90 DEGF is normal. If it's lower than that, you're probably flooding back. If higher then low on charge, or restriction, etc.

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