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Thread: 410 A Help!

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  1. #1
    Join Date
    Jul 2008
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    24

    410 A Help!

    What is the difference in temp from supply and return air in 410 A. Like the R22 is typically 20 degrees sifference. What is the difference in 410A? What should they do? I have put a 410A in a restauraunt and it is not cooling.

  2. #2
    Join Date
    Dec 2007
    Location
    Ohio
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    2,875
    Depends on what your other temps are really...what's the question again?
    I need a new signature.....

  3. #3
    Join Date
    Jan 2008
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    1,972
    There is no expected difference in temperature differential between the two. We shoot for 20 degrees with either one.
    "Hey Lama, hey, how about a little something, you know, for the effort." And he says, "there won't be any money, but when you die, on your deathbed, you will receive total consciousness." So I got that goin' for me, which is nice. - Carl Spackler

  4. #4
    Join Date
    Sep 2007
    Location
    KY
    Posts
    79
    did you change evap?
    did you change refrig lines or flush?

    R-410 is just like any other refrigerant. Understanding your PTR and the refrigeration cycle is key.
    I'm lost, I've gone to look for myself.

  5. #5
    Join Date
    Jul 2008
    Posts
    24

    Confused

    THIS IS WHATS HAPPENING I HAVE INSTALLED 3- 5TON 410A HEIL PACKAGE UNITS .IN A 2500SQ FT OLD BRICK BULDING THAT HAS COMPLETLY REMOLDED,AND HAS BEEN MADE INTO A RESTARANT/BAR.HOWEVER THE BULDING HAS NO CELING JUST EXPOSED RAFTERS AND DUCT . . WELL WITHOUT WRITING AN ENTIRE BOOK ITS YOUR TYPICAL OLD DOWTOWN BULIDING.ITS HAS BEEN WORKING FINE FOR THE LAST THREE MONTHS. UNTILL THIS PAST TUESDAY SO I CHECKED ALL THE UNITS THEY WERE ALL RUNING .FINE BUT ALL T-STATS WERE SET AT 7O BUT AVERAGE TEMPERATURE WAS 77.SO I DISCOVED THAT THE 410A HEIL UNITS HAVE 1 COMPRESSOR BUT 2 STAGES OF COOLING SO I JUST TIED Y2 AT THE PACKAGE UNIT TO Y1 AND REMOVED FILTERS THAT HADE BEEN LEFT INSIDE INSIDE UNIT FROM FACTORY.THEY LOOKED SOMEWHAT DIRTY AND THERE WERE ALL READY FILTERS INSIDE BULDING SO DIDNT THINK WE NEEDED DOUBLE FILTERS.THE OWENERS SAID THE UNIT WORKED GREAT AFTER THOSE2 CHANGES 4- 3 DAYS ANYWAY. NOW HOWEVER THERE NOT KEEEPING UP IT WAS 78 AT 6.00PM IM WONDERING WHAT THE HELLS SUDDENLY CHANGED. TO CAUSE THE WHOLE BULDING TO STOP COOLING I ONLY PUT THE 410A UNITS IN BECAUSE THEY WERE ALL OUT R22S THE DAY WE HAD TO PUT UNITS ON ROOF.IM STUMPED OR STUPID .I GUESS ITS THE LATER IM LOOKING FOR ANY ANSWERS .ALL DUCT WORK WAS INSTALLED TO ENGINNERS PLANS IM LOST WITH THE 410A

  6. #6
    Join Date
    Jul 2008
    Location
    Denver, CO
    Posts
    4,229
    Check your super heat, ambient temp.,Room temp., Pressures, sub cooling, humidity and temperature drops across the evaporator. One must know all this information before a diagnosis can be made

  7. #7
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,615
    is the make up air working for the venthood

  8. #8
    Join Date
    Apr 2007
    Posts
    623
    Hard to say with the info given. But one thing I can tell you for sure, is the R410A is not the cause.

  9. #9
    Join Date
    Jul 2008
    Location
    Pittsburgh PA
    Posts
    37
    Quote Originally Posted by catmanacman View Post
    is the make up air working for the venthood
    Good call cat man!

  10. #10
    Join Date
    Jul 2008
    Location
    Alabama
    Posts
    658
    Quote Originally Posted by dholladay View Post
    .THE OWENERS SAID THE UNIT WORKED GREAT AFTER THOSE2 CHANGES 4- 3 DAYS ANYWAY. NOW HOWEVER THERE NOT KEEEPING UP IT WAS 78 AT 6.00PM IM WONDERING WHAT THE HELLS SUDDENLY CHANGED. TO CAUSE THE WHOLE BULDING TO STOP COOLING :
    Sounds like something else broke. You did say they were Heil, right??

  11. #11
    Join Date
    Jun 2008
    Location
    Morgantown, WV
    Posts
    129
    Quit screaming and get rid of typing in all caps. It's not only rude it's very hard to read.

  12. #12
    Join Date
    Sep 2002
    Posts
    12,195

    How many people live in this restaurant?

    .
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  13. #13
    Join Date
    Jul 2008
    Posts
    24
    The make up air fan is working properly. The system was installed by engineers specs. I believe there is a maximum of 60 people in the place.

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