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Type: Posts; User: Ed Janowiak

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  1. Replies
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    Then what is your next move? 17 degree split...

    Then what is your next move?

    17 degree split low load low SH the unit is low on capacity, dry bulb split should be way higher. If there is a hint of low airflow problem the split should have been...
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    Or do CFM x TD x .317 = watts output Divide...

    Or do
    CFM x TD x .317 = watts output

    Divide by watts input to calculate COP 😁
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    BTUH/ (TD x 1,08 ) = CFM Amps x volts x 3.412=...

    BTUH/ (TD x 1,08 ) = CFM
    Amps x volts x 3.412= BTUH

    The 1.08 and 3.412 cancel out to 3.16
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    if you question the airflow why not just measure...

    if you question the airflow why not just measure it?

    Run elec strips at same fan speed as comp runs -
    amps x volts / TD x 3.16 = CFM

    Quantify and stop guessing :cheers:
  5. Why would you need to know what direction the...

    Why would you need to know what direction the room faces? The largest heat loss would happen in the dark wouldn't it?
  6. Thread: EPA cert

    by Ed Janowiak
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    246

    www.eh-cc.org Too bad I didn't see this till...

    www.eh-cc.org

    Too bad I didn't see this till now, I'm doing a 608 review and test tomorrow in Pleasantville. If all you want to do is test, call the office and you can test on line at your...
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    I think you'll miss the snow :putergreet:

    I think you'll miss the snow :putergreet:
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    I believe the 80 / 20 mix with the oil will...

    I believe the 80 / 20 mix with the oil will result in zero problems. Flushing to get rid of contaminants is good, flushing to rid the piping of oil is a scam. I like 407C more and more every day.
    ...
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    A "tight" shaft on a motor with permanent magnets...

    A "tight" shaft on a motor with permanent magnets is normal. Ohm the motor out like any 3 phase motor to see if it's good. A spin test on the shaft with a comparison to a PSC motor is not a a good...
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    Cool, that's why I asked :-). Gunslinger, yes...

    Cool, that's why I asked :-).

    Gunslinger, yes the new version will be out soon.
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    Can you clarify what you mean there? Manual S...

    Can you clarify what you mean there?

    Manual S is not a guess at anything, it's a procedure to select equipment and recommend airflow based on the SHR and BTUH loss provided by Manual J.
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    thanks for the help fellas, i looked for a while...

    thanks for the help fellas, i looked for a while and came up blank on both glad i asked.
  13. Replies
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    AHRI cert #

    I'm having a difficult time finding AHRI reference numbers for these combo's, can anyone lend a hand please.

    Goodman:
    OUTDOOR model SXC180361AC

    INDOOR ARUF36C14BB

    Goodman:
    OUTDOOR...
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    So you want split hairs about this but ball...

    So you want split hairs about this but ball parking the actual selection is ok, I'm sorry I said I was done before but this was too good not to mention, have a good night.
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    You added this after my last reply. Highly...

    You added this after my last reply.

    Highly technical ? I call that doing it correct and not ball parking, LOL, you win I'm done.
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    Fan speed affecting SHR is covered in Manaul S,...

    Fan speed affecting SHR is covered in Manaul S, what you are leaving out is the total capacity will start to drop as latent work disappears. If you can produce application data with the high airlfows...
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    Show me application data for a 2 ton split unit...

    Show me application data for a 2 ton split unit running 600 CFM per ton. I've never seen a resi split over 500 per ton. If this info doesn't exist what might happen theoretically is moot.

    I have...
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    If you install a 2 ton system on a 22k gain with...

    If you install a 2 ton system on a 22k gain with a SHR of .98 you just installed a unit that does not have enough capacity to meet the gain.

    SHR is sencible gain divided by total gain. With this...
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    Sure about that? ...

    Sure about that?

    http://i591.photobucket.com/albums/ss352/EdJanowiak/null_zps4d3970c5.jpg
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    Close all the windows in the house, close all the...

    Close all the windows in the house, close all the doors and turn on all the fans in the house (furnace / air handler/ kitchen / fart etc) and see if the water heater is still drafting, my guess is...
  21. Yes, yes it is. St Louis was the best standard...

    Yes, yes it is. St Louis was the best standard air discussion I witnessed.


    Didn't know I could subscribe without making a post.
  22. I'm not permitted to comment in this forum, but...

    I'm not permitted to comment in this forum, but I'm doing so to get emails when this thread updates. I've seen some really fun discussions on this topic in person from some of the participants, and...
  23. When you say "maxes out" do you mean the units...

    When you say "maxes out" do you mean the units stops cycling and the temp starts to rise in the space?

    If so, you have never seen a system installed after an accurate load calc was performed. It's...
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    Wright J moble does block load calcs, you need...

    Wright J moble does block load calcs, you need room by room to do a duct layout.

    I see the value and time savings in a computer based load calc but just don't see it in the duct design. I see so...
  25. Is it a good way to do a calc? Ballpark yes truly...

    Is it a good way to do a calc? Ballpark yes truly accurate? No.

    In the world of good better best, it's good (it's a dumbed down version of 7). The abridged version of 8 is better and best would be...
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