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  1. #1
    Join Date
    Sep 2011
    Posts
    59

    need opinion on new changeout.

    I recently installed a new system at my fathers house in Florida. Its working good but Im not sure if I got it at its maximum efficiency.
    I installed an AEPF30361BA variable speed air handler with a GSX13O36 condenser. R410a. The air handler is an 06, but I changed out the evap for a 410a direct replacement from Goodman since the old one was r-22 only.

    I have set the blower speed dip switches for 3.5 ton blower speed with minus 15% trim.

    Piston size .070 (Came with condenser)

    Outdoor ambient: 88f
    indoor 78f
    furthest supply 53f
    sh 5.4
    sc 9.9
    press 140.3 / 363.9

    any suggestions welcome.

  2. #2
    Join Date
    Dec 2002
    Location
    Arizona
    Posts
    4,235
    Whats your IDWB temp?
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  3. #3
    Join Date
    Sep 2011
    Posts
    59
    I am sorry, I dont have a a tool to check for wet bulb...

  4. #4
    Join Date
    Dec 2002
    Location
    Arizona
    Posts
    4,235
    OK. How about Relative Humidity?
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  5. #5
    Join Date
    Sep 2011
    Posts
    59
    Its 82% outside as per google for this area. But I cant measure it inside either. Any way I can make a wetbulb thermometer myself? I heard a regular thermometer wrapped with wet cotton in the retunr box.

  6. #6
    Join Date
    Dec 2005
    Posts
    1,823
    Quote Originally Posted by gesellman View Post
    I recently installed a new system at my fathers house in Florida. Its working good but Im not sure if I got it at its maximum efficiency.
    I installed an AEPF30361BA variable speed air handler with a GSX13O36 condenser. R410a. The air handler is an 06, but I changed out the evap for a 410a direct replacement from Goodman since the old one was r-22 only.

    I have set the blower speed dip switches for 3.5 ton blower speed with minus 15% trim.

    Piston size .070 (Came with condenser)

    Outdoor ambient: 88f
    indoor 78f
    furthest supply 53f
    sh 5.4
    sc 9.9
    press 140.3 / 363.9

    any suggestions welcome.
    Is that a 25 degrees DT?
    It is your DAD. Put a TXV.

    Quote Originally Posted by gesellman View Post
    I am sorry, I dont have a a tool to check for wet bulb...
    You have a thermometer. Now you need is the clean white shoe string. Insert the thermometer into the shoe string. Wet it. Leave it on the table and watch the temp rise until it stops. (the pint when it goes up & down. NOW you got wet bulb.

    Again --- It is your DAD. Put a TXV.

  7. #7
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,379
    any variable speed should have a TXV

  8. #8
    Join Date
    Nov 2011
    Location
    USA
    Posts
    332
    With the ID and OD temp values, I'd estimate the target superheat between 15˚ and 20˚. Saturated temps look good, so you only need to remove a little refrigerant to adjust the superheat up a bit.

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