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  1. Well in about a month I'll be teaching a class of...

    Well in about a month I'll be teaching a class of new guys at our training facility. We have both txv and non txv systems. If I can alter the wet bulb and keep the dry bulb constant I'll be back to...
  2. yes i agree, load is affected by WB. this however...

    yes i agree, load is affected by WB. this however began as a DTD debate. so Richard, what affects refrigerant saturation temperature more, coil inlet DB or inlet WB? if both do, can you speculate a...
  3. ok, to your 1st point, latent heat removal will...

    ok, to your 1st point, latent heat removal will dry the air, RH goes down AT THE SAME DRY BULB. but because there is also sensible heat removal the dry bulb goes down and the RH responds by going up...
  4. ok for $hits and giggles, and remember, a good...

    ok for $hits and giggles, and remember, a good hearted debate:grin2:







    i was really hoping some smart guys like medic, penderway or bergman would stop by and add to this, of course the...
  5. hey Rob, no sweat, just looking for a good...

    hey Rob, no sweat, just looking for a good hearted debate with some on here who have a willingness to learn and teach and still have thick enough skin to take it. i do :cheers:

    however i havent...
  6. Rob, you seem like a nice smart guy but, but i...

    Rob, you seem like a nice smart guy but, but i think someone gave you some misguided advise.




    Rob, i'm not picking on you, this has been a great thread for the new guy's learning this trade....
  7. :pop: i'll be back, pizza just arrived

    :pop:




    i'll be back, pizza just arrived
  8. hmmm. could you expand on this further? i...

    hmmm. could you expand on this further? i understand DTD to be a function of the P/T relationship. i understand that dewpoint, wet bulb, RH ect will affect the btu content of the air entering the...
  9. oh i understand!, thanks for the insite, ive...

    oh i understand!, thanks for the insite, ive learn one whole hell of a lot from that spreadsheet
  10. well thank you sir! reminds me of an early...

    well thank you sir!

    reminds me of an early thread reguarding your capacity spreadsheet. i'm a WB/DB guy and the spreadsheet needs DB/RH. now that i've been slowly learning excel and reading the...
  11. hey medic, this is off topic but i see your...

    hey medic, this is off topic but i see your signed on. i'm looking for a excel spreadsheet formula for TEET. i understand if you want to protect it, ut it would help for a training session i'm...
  12. thats a nice document, but i do have an issue...

    thats a nice document, but i do have an issue where it says for ac evaps a 40 deg TD is expected. 30 degs is closer to the truth
  13. go back and read testos ac application manual. i...

    go back and read testos ac application manual. i know you have it, you said so a while back. it is a great read.
    also look for carriers ac application manual as well
  14. Replies
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    sorry Wayne, a pound of air is a pound of air. ...

    sorry Wayne, a pound of air is a pound of air. assuming a neutral room pressure what goes in must come out. i know you now that.

    to really understand the beermans room in question we also need...
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    7,885

    now i do firmly believe that proper register do...

    now i do firmly believe that proper register do influence stratification, throw, mixing of air. yes it is very important. a house with a boiler will have really poor heating in a room where the zone...
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    7,885

    i beleive i tried that and just swallowed a bug!,...

    i beleive i tried that and just swallowed a bug!, thanks
  17. Replies
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    7,885

    i'm not going to even attempt to try and say that...

    i'm not going to even attempt to try and say that i understand this to the point where i can state whats right or wrong on this subject but..

    what i've been told (some i know will agree, some...
  18. never had an issue with liquid charging liquid,...

    never had an issue with liquid charging liquid, just gotta keep an eye on the digital scale so you have some idea of how fast yer dumpin it in
  19. you still in midwest Wisconson Chuck?. i've...

    you still in midwest Wisconson Chuck?. i've thought those would be a great deal around here.
  20. Replies
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    or.... buy a 5/16th inch 8 point socket.... thats...

    or.... buy a 5/16th inch 8 point socket.... thats 8 pt not 12 pt. worth every penny
  21. Replies
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    :pop:

    :pop:
  22. Replies
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    2,188

    sorry, im having a tough day. it takes practice...

    sorry, im having a tough day. it takes practice to get good. you'll get it.

    i have faith. keep up the good work!
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    oh for the love of god! bolt the new motor in...

    oh for the love of god!

    bolt the new motor in the belly band, drop it in the wheel and housing.

    now center the wheel in the housing, tighten the set screw, reinstall assembly and finish wiring....
  24. psyclone lite

    psyclone lite
  25. can you explain the physics behind this, i'm not...

    can you explain the physics behind this, i'm not disgreeing, but that make little sense.

    how can restricting the flow of refrigerant ( say 2 of 6 tubes plugged ) cause the distributor to overfeed...
  26. Replies
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    4,170

    sorry, was just havin fun. dc ak900 by uei is...

    sorry, was just havin fun.

    dc ak900 by uei is what i have- love'm
  27. Replies
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    yes, there is..

    yes, there is..
  28. Replies
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    :eek2: wow :eek2: those are horribly...

    :eek2: wow :eek2: those are horribly restrictive. manual D default for calculations and most average H&C registers have a delta P of 0.03"wc.

    i suppose you could do without an evaporator if you...
  29. Replies
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    ok, what i see is this, you only have a 10 degree...

    ok, what i see is this, you only have a 10 degree DB split and a 10 deg WB split. DB split can have a wide range but for a 10 deg delta it had better be very hunid in the return. 9-11 deg WB is a...
  30. Replies
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    2,612

    your response sounds to me that your in the...

    your response sounds to me that your in the industry. i've been looking for delta p specifications for some time. filter manufactures seem to not want to share that information.

    do you work for a...
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    and yet, no one mentions that proper sizing is...

    and yet, no one mentions that proper sizing is crucial to maintaining acceptable delta P reguardless of "color"

    ever notice most furnaces with 5 ton blower packages and a 16 x 25 x 1 or even 4"...
  32. i'll give you my version of the same answer...

    i'll give you my version of the same answer everyone has given. just take the pressures of 2 refrigerent tanks, same refrigerant, same temperature, now you tell me, only using pressure which one has...
  33. Replies
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    sorry, no part number but carrier has a couple of...

    sorry, no part number but carrier has a couple of parts such as the "small parts bag" used for installation, the kit for all the hoses and one for just the small diameter hoses ( 3/16" ID). high...
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    let me get this straight, a 50% solution leaks...

    let me get this straight, a 50% solution leaks out and 100% glycols is there at the ready to replace it??

    yeah, i guess if its only a gallon or 2 it'd be ok
  35. Replies
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    Yeah, im ready. Just back from a aweek on a...

    Yeah, im ready. Just back from a aweek on a florida beach to 5 inches of snow on my deck yesterday
  36. Thread: LED flashlights

    by ch4man
    Replies
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    5,980

    My first streamlight, a incan stinger lasted...

    My first streamlight, a incan stinger lasted 14years. Sure 2 bulbs a year,a few switches and batterys but it just worked. Now that it diedi have 5 years on a strion that will not quit! They are...
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    heat loss,,,,,,,,

    this wont answer you question but its true.
    about 10 years ago at deer camp we had a 30,000 btu empire vented space heater in a homemade 10 X 14 ft tent. i had brought up a temperature recorder and...
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    old school......

    these are from 4 years ago, still using the same old box

    http://hvac-talk.com/vbb/attachment.php?attachmentid=46052&d=1251678117
    ...
  39. Replies
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    yep, if the throttle valve didnt open you'll have...

    yep, if the throttle valve didnt open you'll have "correct" outlet pressure but the closed throttle valve will further restrict the gas flow. thus "good" measured gas pressure but in fact low CFH
  40. Replies
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    so you have correct pressure but not enough gas...

    so you have correct pressure but not enough gas to get close to rated temp rise? where are you measuring gas pressure, at the gas valve or the throttle valve?
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    mind telling us why you think thermocouples are...

    mind telling us why you think thermocouples are better? most believe thermisters, while a bit slower to stabilize are more accurate and consistant
  42. Thread: RPM Question

    by ch4man
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    7
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    499

    interesting,,,, was that under a nominal load?

    interesting,,,, was that under a nominal load?
  43. Thread: dry cold air

    by ch4man
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    836

    this is almost as tough of a concept to teach as...

    this is almost as tough of a concept to teach as is the question " what weighs more dry air or humid air?" way more guys get this wrong than understand.

    psycrometrics is something we all need to...
  44. Replies
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    Take an old gas furnace, one that has a multi...

    Take an old gas furnace, one that has a multi sppeed blower, a hw fan/limit, a fan center relay, old school tstat and rip all the wores out of it. Give the new guy a bag full of wires(not the...
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    Yes its one of those,,,,,,, but by the...

    Yes its one of those,,,,,,, but by the description of the intake being burnt black she'sbetter off new....jmho
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    I wonder if the circ he installed didnt have a...

    I wonder if the circ he installed didnt have a flow check. with that piping arangement you must have IFC's
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    thats just done to keep the rain water from...

    thats just done to keep the rain water from pooling on it
  48. yep, them Canadians are terrible drivers

    yep, them Canadians are terrible drivers
  49. Replies
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    thanks, i was always told the black disc that...

    thanks, i was always told the black disc that fries was a MOV..

    probably was told that by "some guy on the internet"

    wait........................................




    no, NTC makes sense..
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    im sorry i thought you were talking a ECM motor....

    im sorry i thought you were talking a ECM motor.

    they act opposite of a PSC motor....

    dont beleive me, try what i said


    read post 19, he said it better than i could
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