Rheem heat pump defrost

Discussion in 'HVAC' started by Injun Ear, Jun 15, 2009.

  1. Injun Ear

    Injun Ear Guest

    Trying to hook up the defrost so it will energize some heat during the
    defrost cycle. It says run a lead from D on the heat pump to P on the
    air handler. Only problem is, I seen no P terminal on the air handler's
    circuit board.
     
    Injun Ear, Jun 15, 2009
    #1
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  2. Injun Ear

    Noon-Air Guest

    its the purple wire on Rheem/RUUD heat pumps to energize the strips when it
    goes into defrost.
     
    Noon-Air, Jun 15, 2009
    #2
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  3. Injun Ear

    Injun Ear Guest

    Yes, I have a purple wire. But where does it hook up in the air handler???
     
    Injun Ear, Jun 15, 2009
    #3
  4. Injun Ear

    Injun Ear Guest

    Can't do that... My system will stink like P then. :(
     
    Injun Ear, Jun 15, 2009
    #4
  5. Injun Ear

    Noon-Air Guest

    Apparently you can't read a schematic?? or the installation instructions??
    This is basic controls, with basic wiring.
    You do know that Rheem equipment RVs are energized in heat, I would hope
    What model heat pump??
    What model of air handler are you using with it??
    What control are you using with it??
     
    Noon-Air, Jun 15, 2009
    #5
  6. Injun Ear

    That One Guest


    P is the Positive terminal.

    D is the Defrost terminal.

    This stuff ain't Rocket Science, you know.
     
    That One, Jun 16, 2009
    #6
  7. Injun Ear

    Injun Ear Guest

    The only thing the schematic shows is the heat pump end, not the air
    handler end. It shows a picture of the terminals, but there is no P
    terminal.

    Rheem RPPB-036JAZ heat pump.

    Rheem RBHK-24J14SHD air handler.
     
    Injun Ear, Jun 16, 2009
    #7
  8. Injun Ear

    Noon-Air Guest

    Why are you putting in an R22 heat pump when in a year, R22 is going to
    become *VERY* scarce and *VERY* expensive??

    You have already proven that you not a tech, but a home owner trying to DIY.
    Take a crowbar to your wallet and call a local tech that knows what he is
    doing.... who knows what else you might have screwed up in the process.

    BTW... you do realize that the warranty on *ANY* Rheem equipment bought over
    the internet is null and void.
     
    Noon-Air, Jun 16, 2009
    #8
  9. Injun Ear

    Injun Ear Guest

    1. This is an EXISTING heat pump that was installed in 2005.

    2. I already called the tech and he says he doesn't know anything about
    that and furthermore, he is too busy to fool with it. He says he has
    100 calls to make on units that are out of service and. Says if my
    system breaks down, call him.

    3. I did not buy this system on the internet, It was installed by
    the above mentioned tech.

    4. It's just a simple connection. All I want is for the heat strips
    to kick in when the thing goes into defrost. I waited till warmer
    weather to do it so I wouldn't freeze my butt off trying to hook it
    up in the winter. I looked in the unit outside and the D terminal
    is already connected to the purple wire. But it ends inside the
    air handler without being connected to anything. I don't think it
    takes a highly educated tech guy to connect 1 wire.

    5. So, if R22 is going to be obsolete, what are we gonna do? Does
    this mean we have to buy another new unit or will there be a drop-in
    replacement for R22 like there was for R12 a few years ago? I used
    to convert R12 cars to R134A but not much need for that any more.
     
    Injun Ear, Jun 16, 2009
    #9
  10. Injun Ear

    Noon-Air Guest

    Call a legitmate tech, not the cheapest
    then the guy is an idiot
    Check the schematic for the air handler... it will tell you where it goes.
    Bend over
    yes
    no
     
    Noon-Air, Jun 16, 2009
    #10
  11. There's several years of R-22 out there, in HVAC shops and
    on the trucks. Enough for a while. The new R-410a, which is
    marketed as Puron, and some other names. Supposed to do the
    job nicely. It won't work in the old systems. As the price
    of R-22 goes up, someone is sure to develop a drop in
    replacement.

    --
    Christopher A. Young
    Learn more about Jesus
    www.lds.org
    ..



    5. So, if R22 is going to be obsolete, what are we gonna
    do? Does
    this mean we have to buy another new unit or will there be a
    drop-in
    replacement for R22 like there was for R12 a few years ago?
    I used
    to convert R12 cars to R134A but not much need for that any
    more.
     
    Stormin Mormon, Jun 17, 2009
    #11
  12. Injun Ear

    Don Ocean Guest

    There are already half a dozen drop in replacements in place.
    Check out ATOFINA's, IGC.s, ICR Intenational, and ASPEN websites.
     
    Don Ocean, Jun 17, 2009
    #12
  13. R-MX22 presently available in southern states
     
    Old and Grunpy, Jun 17, 2009
    #13
  14. Sorry my mistake
    look up: HC-12a/134+® and HC-22a/502a® are:
     
    Old and Grunpy, Jun 17, 2009
    #14
  15. Injun Ear

    Steve Guest

    Too bad you won't be able to get the equipment and coils for it.
     
    Steve, Jun 18, 2009
    #15
  16. Ah, well. All the numbers. 12 went to 134a (with oil change,
    and new metering device). The newer equipment is designed
    for 134a.

    22 is going to, something else. Either a drop in blend, or
    maybe the equipment will die by the time it's needed.

    502, couple replacements. 408a comes to mind, and the new
    404a with new oil and new equipment.

    It's all big blur of numbers.

    --
    Christopher A. Young
    Learn more about Jesus
    www.lds.org
    ..


    Sorry my mistake
    look up: HC-12a/134+® and HC-22a/502a® are:
     
    Stormin Mormon, Jun 18, 2009
    #16
  17. When they stop making coils for the old stuff, by that time
    I'll have done several years of working on the new stuff. No
    worries.

    --
    Christopher A. Young
    Learn more about Jesus
    www.lds.org
    ..


    Too bad you won't be able to get the equipment and coils for
    it.
     
    Stormin Mormon, Jun 18, 2009
    #17
  18. Injun Ear

    Steve Guest

    most manufactures quit making R-22 stuff last September..... My suppliers
    can't even get a replacement R-22 3 ton evap coil anymore.... they are not
    to be had.
     
    Steve, Jun 18, 2009
    #18
  19. Injun Ear

    Noon-Air Guest

    Thats great if you can find a coil that will fit in a Rheem/RUUD air handler
    for a heat pump.
    I have done several conversions also, but that is a gross injustice to the
    customer....unless you one of the local low ballers who doesn't give a crap
    about anything but grab the money and run.
     
    Noon-Air, Jun 18, 2009
    #19
  20. I assumed he was talking about a cased coil, not putting a coil
    into an existing case. Good grief, I can't count the times we've
    had to cut out an old coil, case and all, and install a new one.

    TDD
     
    The Daring Dufas, Jun 19, 2009
    #20
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