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Type: Posts; User: icy78

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  1. Replies
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    You can run sleeve bearing motors. Some last a...

    You can run sleeve bearing motors. Some last a long time. Probably dependent on setup speed and duration of slower run times.

    This Carrier instruction sheet...
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    Ball bearing if using variable speed control, and...

    Ball bearing if using variable speed control, and you want slow fan speeds.
    Otherwise sleave bearing ok. Usually not recommended to go below 1/2 rated voltage on sleeve bearing, due to insufficient...
  3. Thread: mcquay AGS

    by icy78
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    Good catch. Sent from my SM-G950U using...

    Good catch.

    Sent from my SM-G950U using Tapatalk
  4. Replies
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    Yeah that's weird! And LOL! RIP van winkle-esk...

    Yeah that's weird! And LOL!
    RIP van winkle-esk [emoji846]

    Sent from my SM-G950U using Tapatalk
  5. If the fan in fact had a problem, theres a good...

    If the fan in fact had a problem, theres a good chance the frosted suction line was due to the fan problem.

    Sent from my SM-G950U using Tapatalk
  6. Replies
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    I might be totally misunderstanding your original...

    I might be totally misunderstanding your original post @LRB so ignore this if it doesnt pertain.

    Maybe this just pertains to commercial, but

    ....you can have high static from too much airflow....
  7. PSEartisan. Sent from my SM-G950U using...

    PSEartisan.

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  8. Thread: mcquay AGS

    by icy78
    Replies
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    Are those numbers from the controller or actual...

    Are those numbers from the controller or actual measured numbers by you.?

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  9. Replies
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    Check out the UEI DL389. All in one. Sent...

    Check out the UEI DL389. All in one.



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    For sure , you need a more experienced tech. I...

    For sure , you need a more experienced tech. I think he should've caught it when he tapped the contactor.

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  11. Replies
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    It's hard to tell but when I stop the video and...

    It's hard to tell but when I stop the video and look down through the condenser fan at the compressor it looks almost like it's a heat pump. is it? If it is I would definitely ditch the Nest T...
  12. Is it heating or cooling when this happens? ...

    Is it heating or cooling when this happens?

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  13. Replies
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    Where are you reading your space humidity.? If...

    Where are you reading your space humidity.? If it's near a supply it's going to read pretty high while the AC is running.

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  14. Venting maybe Sent from my SM-G950U using...

    Venting maybe

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  15. Thread: Pressurization

    by icy78
    Replies
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    Dude, if you gotta ask, I'm sure it...

    Dude, if you gotta ask, I'm sure it applies![emoji2]

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  16. Thread: Pressurization

    by icy78
    Replies
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    429

    Great post pecmsg ! That was the Monday morning...

    Great post pecmsg ! That was the Monday morning laugh that I needed!!

    Sent from my SM-G950U using Tapatalk
  17. Replies
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    What Terry said. Wire up the defrost clock, ...

    What Terry said.

    Wire up the defrost clock, but first, BE THERE when it defrosts on a hot afternoon, and see what happens. Good chance theres migration and a high load.
    Does the head pressure...
  18. Replies
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    You have a 5 ton now? Using a 12 x 24 return?...

    You have a 5 ton now?
    Using a 12 x 24 return?
    What is the filter size?
    What is present actual cfm?
    Was a load calc done?



    Sent from my SM-G950U using Tapatalk
  19. Replies
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    How much oil was in the compressor that you took...

    How much oil was in the compressor that you took out. And have there been other compressor changes on that system? Any inadvertent traps in the suction line?

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  20. Replies
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    Maybe the dryer is restricted, due to the...

    Maybe the dryer is restricted, due to the subsoiling.

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  21. Replies
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    At 90 DB indoors, very likely, you'd see 95 psi...

    At 90 DB indoors, very likely, you'd see 95 psi SP with 407C.

    I think you may be undercharged and low airflow and if those were right, head would be 250ish.

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  22. Replies
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    Woohoo! Instigator alert!!![emoji846] Sent...

    Woohoo! Instigator alert!!![emoji846]

    Sent from my SM-G950U using Tapatalk
  23. Replies
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    I should clarify, that as TB said, on bigger...

    I should clarify, that as TB said, on bigger systems I would probably do everything exactly by the book. But for smaller ones it's worked just fine to convert with an/no additive.
    The oil lubricates...
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    I haven't had any issues but I add 88. I think...

    I haven't had any issues but I add 88.
    I think on a long vertical rise, I would do the whole detailed conversion, simply so there's no reason to question the oil if theres an issue down the road....
  25. Replies
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    Oh my bad I think. I understood it as ONE...

    Oh my bad I think. I understood it as ONE compressor on TWO circuits. That's why I alluded to the Txv being too big.
    Thought you had unloading setup.[emoji53]

    Sent from my SM-G950U using...
  26. Replies
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    Must be 2 txvs right? So which circuit is the...

    Must be 2 txvs right?
    So which circuit is the restricted txv on?
    If on the flooding circuit, it must not be restricted. Much.
    If it's on the #2 circuit...then when you change it, it too may...
  27. Replies
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    ^^^^^^^^ Also note the coil configuration. ...

    ^^^^^^^^

    Also note the coil configuration. Stacked or intertwined or in series. (To the airflow)

    Number of coils, and staging setup.
    Txv sizes.

    Vav or CV?
  28. Replies
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    AHU fan running? Sent from my SM-G950U using...

    AHU fan running?

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  29. Replies
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    Well that needs attention. Also, the gas piping...

    Well that needs attention. Also, the gas piping is blocking the access doors.
    I'd have a reputable tech come in and check out everything. With work like we seeing here, there's a lot else that may...
  30. This is a cool thread. We had a 5ton Trane...

    This is a cool thread.
    We had a 5ton Trane package unit that ran high head and occasional "unexplained trips".
    I got sent there, cause I love problem units, and found the rtu top, about 2 feet...
  31. I cannot give any kind of technical explanation...

    I cannot give any kind of technical explanation I'm really poor at that. But I can say that I'm very suspicious always of my static pressure readings. Now, the ones that I may trust, are when I'm...
  32. LOL! Used the decade box yesterday to fool a ...

    LOL!
    Used the decade box yesterday to fool a Intella-Traul coil sensor which read 101°f. (Keeping it from defrosting)[emoji106]

    Sent from my SM-G950U using Tapatalk
  33. Replies
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    I'm interested, give us a sales pitch on the...

    I'm interested, give us a sales pitch on the hilmor over the bullet! :-)

    Sent from my SM-G950U using Tapatalk
  34. Replies
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    Probably in here. ...

    Probably in here.

    https://www.ecmweb.com/qampa/stumped-code-february-2011

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  35. Thread: Aaon make up air

    by icy78
    Replies
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    556

    Any special tools needed to work on these...

    Any special tools needed to work on these Atherion units?


    Sent from my SM-G950U using Tapatalk
  36. Thread: Aaon make up air

    by icy78
    Replies
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    556

    That unit is supplying make-up air for all the ...

    That unit is supplying make-up air for all the exhausts.
    I wouldn't be surprised if it's simply dumping air into the hallways , and maybe a couple open areas , and supplying tempering for those...
  37. Wet-bulb at register was 19° Fahrenheit? Sent...

    Wet-bulb at register was 19° Fahrenheit?

    Sent from my SM-G950U using Tapatalk
  38. Replies
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    For the sake of keeping this going because it...

    For the sake of keeping this going because it could get quite interesting I think, could you not take your design BTU load from the evaporator add the running load amps converted to BTUs from the...
  39. Or an open-on-temp-drop , klixon, breaking the y...

    Or an open-on-temp-drop , klixon, breaking the y wire.

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  40. Replies
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    How about DM water instead. Demineralized. ...

    How about DM water instead.
    Demineralized.

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  41. Replies
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    Sounds like a safety to me Sent from my...

    Sounds like a safety to me

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  42. Replies
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    What happens when run in test mode? Sent from...

    What happens when run in test mode?

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  43. Replies
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    LOL TB! Gotta love that Nielson delivery! ...

    LOL TB!
    Gotta love that Nielson delivery!

    Sent from my SM-G950U using Tapatalk
  44. Replies
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    5170 cfm...hmmm Maybe thats a typo? What...

    5170 cfm...hmmm
    Maybe thats a typo?

    What about dry bulb and wet-bulb temperatures for return, Supply , and outdoor. Although maybe that's too much information for this section.
    Whats the...
  45. Yup. Theres more to it than apps![emoji846] ...

    Yup. Theres more to it than apps![emoji846]

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  46. Thanks for posting that BB. Sent from my...

    Thanks for posting that BB.

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  47. Im thinking Trane approved m099. But that was for...

    Im thinking Trane approved m099. But that was for Europe. Is there some difference in design on different sides of the pond? Besides 50hz.

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  48. Replies
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    Are the new txvs the right ones? Are they...

    Are the new txvs the right ones?
    Are they biflow, or is there a bypass with stuck open check valve?

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  49. Replies
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    This addresses the magic bullet idea of UV. ...

    This addresses the magic bullet idea of UV.

    https://www.achrnews.com/articles/111961-airstream-or-coil-which-uv-application-is-right

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  50. Replies
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    I thought the UV light would go in the return but...

    I thought the UV light would go in the return but I've never installed one. It just seems to make sense to me .
    Did you look into that?

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