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  1. #1
    Join Date
    May 2007
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    Dry as a bone Tucson
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    4,512

    How to choke a heat pump, Phoenix style.

    The supply and return are split in the middle where the screws are.The return starts on the far left side of the duct.


    Here is what it looks like inside the unit. The clear opening dimension is 7"x18". This is a 5 ton unit. There is a 20x30 filter grill in the house.
    notice the rust from condensate sitting. The condensate only drains when the unit shuts down.I didnt have my magnahelic this day but you can bet that the static was well over 1".

    Some Talk, Some Do
    "keeping condensing pressures low and evaporator pressures high"
    "Some customers are more interested in comfort than energy savings"
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  2. #2
    Join Date
    Feb 2007
    Location
    Las Vegas,NV
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    747
    I see they set the unit sideways on the roof, must have been an over/under unit there at one time.

    Some of those over/under setups had small returns, I see alot of those around here.

  3. #3
    Join Date
    May 2007
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    Dry as a bone Tucson
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    over/ under

    your exactly right, probably was an old Goettel (one tough old unit )with a marginal duct design and install. Who ever came up with over under ought to be shot.
    Some Talk, Some Do
    "keeping condensing pressures low and evaporator pressures high"
    "Some customers are more interested in comfort than energy savings"
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  4. #4
    Join Date
    Feb 2007
    Location
    Las Vegas,NV
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    747
    Quote Originally Posted by ACFIXR View Post
    your exactly right, probably was an old Goettel (one tough old unit )with a marginal duct design and install. Who ever came up with over under ought to be shot.
    I see some really bad changeouts here. The worst is when they take out an over/under and mount a big ass unit downshot over the existing roof jack. Sometimes they end up with a hugh transition and the unit is standing 2 or 3 feet adove the roof.

    I prefer to just cut in a new properly sized return and switch everything to normal side by side setup.

  5. #5
    Join Date
    May 2007
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    Dry as a bone Tucson
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    down shot

    I like to set a curb over the old duct and cut all the old crap out and redo it. Most people dont like curbs on resi but it gives you the opportunity to upgrade to better air delivery,and very happy customers.It is a lot of work tho.This is from a few years back.
    Some Talk, Some Do
    "keeping condensing pressures low and evaporator pressures high"
    "Some customers are more interested in comfort than energy savings"
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  6. #6
    Join Date
    Apr 2003
    Location
    California
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    634
    very nice, be proud....that is a big ass disconnect?

  7. #7
    Join Date
    Dec 2007
    Location
    houston, texas
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    3,787
    You forgot to remove the yellow sticker
    I'm not tolerating Political Correctness anymore, from now on it's tell it like it is.

    Veto Pro Pak - The best tool bag you'll ever own






  8. #8
    Join Date
    May 2007
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    Dry as a bone Tucson
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    Big ass disconnect

    Quote Originally Posted by dave82323 View Post
    very nice, be proud....that is a big ass disconnect?
    Our codes here require a dual disconnect for heat pumps with strip heaters, one for the unit and one for the strips.Single feeds are not allowed.
    Some Talk, Some Do
    "keeping condensing pressures low and evaporator pressures high"
    "Some customers are more interested in comfort than energy savings"
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  9. #9
    Join Date
    Jan 2008
    Location
    Outside The Motor City
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    667
    Quote Originally Posted by Texas-Tech View Post
    You forgot to remove the yellow sticker
    It said it is to be removed by the consumer, kinda like the mattress tag. LOL good work to letter of the law. a rarity today!

    flashing questionable
    NO Brains NO Headaches

  10. #10
    Join Date
    May 2007
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    Dry as a bone Tucson
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    Yellow sticker

    Quote Originally Posted by Texas-Tech View Post
    You forgot to remove the yellow sticker
    Yeah, but if you look real close it aint all done yet.
    Some Talk, Some Do
    "keeping condensing pressures low and evaporator pressures high"
    "Some customers are more interested in comfort than energy savings"
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