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Thread: York Chillers

  1. #1
    Join Date
    Mar 2007
    Posts
    4

    York Chillers

    Hi members,

    is their a way to change a psia pressure display on the control panels to psig?
    i have heard that york displays psia for altitude and submarine aplications.
    any help would be great.
    thanks

  2. #2
    Join Date
    Aug 2000
    Location
    USA
    Posts
    4,995
    What model chiller do you have? What version eprom? It has been years since I changed one from PSIA to PSI, I kind of remember it being a function of the eprom. I had to upgrade the eprom to get it to change.

  3. #3
    Join Date
    May 2001
    Location
    Western Wa
    Posts
    1,856

    Why not just learn to deal with it?

    That's what everyone else does. I kind of like the absolute readings, myself.
    God Bless our Veterans

    God Bless the USA

  4. #4
    Join Date
    Jan 2004
    Posts
    1,176
    There is a jumper on the YK boards and if I remember the YT's had a jumper you needed to cut, read the manual.

  5. #5
    Join Date
    Mar 2007
    Location
    San Diego CA.
    Posts
    16
    PSIA is 14.7 so to get PSIG just subtract it from 14.7 or add and you will have your answer. We just leave our machines in atmospheric.

  6. #6
    Join Date
    Nov 2006
    Location
    New Hampsha'!!!
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    282
    Quote Originally Posted by Coremech View Post
    PSIA is 14.7 so to get PSIG just subtract it from 14.7 or add and you will have your answer. We just leave our machines in atmospheric.
    14.7 psia at sea level....
    dont worry what people think, they dont do it often

  7. #7
    Join Date
    Mar 2007
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    Viginia Beach
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    7
    Quote Originally Posted by refrige-nate View Post
    14.7 psia at sea level....
    ON A CALM DAY...

  8. #8
    Join Date
    Jun 2004
    Posts
    26
    Great question. Does anyone know why they use psia?

  9. #9
    Join Date
    Mar 2007
    Posts
    4
    thanks for the replies guys,
    absrbrtek, no chiller in particular, i take care of a few yt's and would like to convert if possible.
    acjourneyman, thanks for the reply i will look into the jumpers on the board.
    coremech, i don't believe it's just adding or subtracting 14.7 when working on low pressure chillers in vacuum.

    paulo

  10. #10
    Join Date
    Mar 2007
    Location
    San Diego CA.
    Posts
    16
    14.7-7.5psia = -7.2psig, 20.5-14.7= +6.8psig

  11. #11
    Join Date
    Mar 2007
    Posts
    4
    hey coremech,
    i'm not sure that the subtraction is entirelly correct.
    isn't 7.5 psia approx. 15"vacuum?

    paulo

  12. #12
    Join Date
    Mar 2007
    Posts
    4
    hey coremech,
    i'm not sure that the subtraction is entirelly correct.
    isn't 7.5 psia approx. 15"vacuum?

    paulo

  13. #13
    Join Date
    Nov 2004
    Location
    North Florida/South Georgia
    Posts
    997

    Here is my fat finger method

    Take the psia reading & subtract 14.7, the answer will be in psig, then take the psig value & multiply it by 2, (I know its 2.somthing, but like I said, this is the fat finger method) this value will be in inches, example:

    6.5 psia - 14.7 = -8.2 psig, then -8.2 x 2 = 16.4".

    OR

    19.5 psia - 14.7 = 4.8 psig

    If you ever want to convert inches to psia or just convert psig to psia, I think its pretty self explanitory, use reverse.

    Hope this helps.
    All my leon freaked out!

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