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  1. #1
    Join Date
    Jun 2008
    Posts
    34

    Unhappy Difference of only 13 degree's at 5:00pm

    86 Outside and best Inside temp is 73. (2nd floor)

    Difference of only 13 degree's?

    New system, 3 ton Trane. (been running all day non stop)

    6 returns and 10 supply vents.

    R410a

    1800 sq feet

    Suggestions?

  2. #2
    Join Date
    Dec 2002
    Location
    Houston,Tx.
    Posts
    16,115
    Who in the world needs it 73 in there home? are you storing bodies in there? we would need to know the wet bulb to really be able to tell you if that split is ok, it's very possible you could have enough outside air penetration from outside into your home that the dew point is way up.
    __________________________________________________ _______________________
    “Experience is a hard teacher because she gives the test first, the lesson afterwards". - Vernon Law

    "Never let success go to your head, and never let failure go to your heart". - Unknown

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,603
    Quote Originally Posted by Mr Bill View Post
    Who in the world needs it 73 in there home?
    LOL..
    When it was 98* a couple weeks ago, I kept my place at 72*
    Nice and cold.
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  4. #4
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,603
    Call the contractor back. Could be charge isn't right. Duct not sealed right. Not wierd right.
    You just had them installed, they're under warranty.
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  5. #5
    Join Date
    Jun 2008
    Location
    south central pa
    Posts
    133
    call the company who installed it you have a problem. im guessing you went with the trane 410 setup. watch for the indoor coil freezing or condensation on the metal of the cabinet. if that happens shut the unit down. and if it happens to be the txv post back with their super heat and subcooling readings.

  6. #6
    Join Date
    Jul 2006
    Posts
    151
    Quote Originally Posted by Mr Bill View Post
    Who in the world needs it 73 in there home?
    I prefer no higher than 74.

  7. #7
    Join Date
    Dec 2002
    Location
    Houston,Tx.
    Posts
    16,115
    Quote Originally Posted by acobra289 View Post
    I prefer no higher than 74.
    You folks ain't right!
    __________________________________________________ _______________________
    “Experience is a hard teacher because she gives the test first, the lesson afterwards". - Vernon Law

    "Never let success go to your head, and never let failure go to your heart". - Unknown

  8. #8
    Join Date
    Jun 2008
    Posts
    34
    Quote Originally Posted by beenthere View Post

    When it was 98* a couple weeks ago, I kept my place at 72*
    A difference of 26 degree's? How? Oversized? Too much freon?

    I thought a differential of 20 was the max?

  9. #9
    Join Date
    Jun 2008
    Posts
    34
    Quote Originally Posted by Mr Bill View Post
    Who in the world needs it 73 in there home? are you storing bodies in there? we would need to know the wet bulb to really be able to tell you if that split is ok, it's very possible you could have enough outside air penetration from outside into your home that the dew point is way up.
    What is the wet bulb?

    Air penetration, could be.

    Explain how the dew point works?

  10. #10
    Join Date
    Feb 2007
    Location
    Las Vegas,NV
    Posts
    747
    Quote Originally Posted by Mr Bill View Post
    You folks ain't right!
    Right now, my evap cooler is holding the house at 73, if it goes above that, we turn the a/c on. I like my house cold! I have neighbors that keep their stat at 80. I sweat to death in their house.

  11. #11
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,603
    Quote Originally Posted by Clorox View Post
    A difference of 26 degree's? How? Oversized? Too much freon?

    I thought a differential of 20 was the max?
    There is no true max.
    Yes, my unit is over sized by many peoples standards.
    But with some tweaking. It works the way I like it, and keeps my humidity under 50%.

    The amount of time I have setting it up. Most people wouldn't want to pay for.

    Not to rub it in too much.
    But if it was 100 out, I could get my place down to 70. I'd have to bring my blower speed back up, past 400 CFM per ton though.
    I barely do 320 per ton now.
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  12. #12
    Join Date
    Dec 2002
    Location
    Houston,Tx.
    Posts
    16,115
    Maybe some folks want to keep as cool as possible here on earth because were there going there will be no a/c, just kidding.
    __________________________________________________ _______________________
    “Experience is a hard teacher because she gives the test first, the lesson afterwards". - Vernon Law

    "Never let success go to your head, and never let failure go to your heart". - Unknown

  13. #13
    Join Date
    Jun 2008
    Posts
    34
    1) I should have gone to 3.5 tons.

    2) I should have added a return vent in my hallway, right above my thermostat. (suck the trapped heat out)

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