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Thread: superheat

  1. #1
    Join Date
    May 2004
    Posts
    23
    Here is another one. I just got a new sh 35n superheat subcooling guage. Hooked it up to a a/c with a 88 outdoor temp and 56 wet bulb suction pressure 72 and the new guage read 14.9 superheat. suction line temp was 54. tthe liquid line pressure was 250. But I could not get a 20degree drop from the incoming air to out going. the out going was 54.4 and the in was 70.8.

  2. #2
    Join Date
    Dec 2002
    Location
    Houston,Tx.
    Posts
    15,912
    You double posted thats a no,no and is this a joke? are you someone we know? Doc is that you?
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  3. #3
    Are you in the trade?

    There are many factors that will effect the Delta T.

    And which did you get the 35 or the 31 that you posted in your other thread?

  4. #4
    Join Date
    Sep 2004
    Posts
    3,157
    I just got a new sh 35n superheat subcooling guage.

    How much did you pay for that gauge? did it come with a pressure temp chart? That gauge wasnt called a THERMOMETER by any chance ?

    it sounds like you are more concerned with getting a 20 degree drop than you are with the superheat. Is that 20 degree drop what you have to achive in order to tell if your air conditioner is working correctly?

  5. #5
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,875
    Originally posted by 25skeet
    Here is another one. I just got a new sh 35n superheat subcooling guage. Hooked it up to a a/c with a 88 outdoor temp and 56 wet bulb suction pressure 72 and the new guage read 14.9 superheat. suction line temp was 54. tthe liquid line pressure was 250. But I could not get a 20degree drop from the incoming air to out going. the out going was 54.4 and the in was 70.8.

    Clean your condenser coil.

    Your indoor air flow might be alittle high.

    But its cooling great.

    You don't always get a 20° delta on the indoor coil.
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  6. #6
    Join Date
    Apr 2004
    Posts
    7,680
    No its not me and this is another example of how getting hung up on delta T and a stoopid rule of thumb gets a guy in trouble. Get off the temperature drop, if everything else is right the temperature drop will be right (who says 20 is right?). Using delta T to troubleshoot will invariably leave you looking in the wrong direction.

  7. #7
    Join Date
    May 2004
    Posts
    23
    Originally posted by jultzya
    Are you in the trade?

    There are many factors that will effect the Delta T.

    And which did you get the 35 or the 31 that you posted in your other thread?
    I am in the trade but not service end have started my own busniess and want to do the best job possible. Sorry if I ask the same question over and over but want to make sure I get things right. I got the 35.

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