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  1. get the original unit submittals and look at what...

    get the original unit submittals and look at what is available. I would guess that you have some room, but as stated by jay its a significant change. are yu looking at heatpipe? since its lab you...
  2. Thread: dry cold air

    by flange
    Replies
    6
    Views
    765

    also why manufacturers of rtu's prefer the use of...

    also why manufacturers of rtu's prefer the use of draw through fans. as the air leaves your coil at say 55/100, it immediately encounters motor heat and comes off of dewpoint.
  3. Replies
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    413

    verify that you know where the drives were...

    verify that you know where the drives were selected, as many fanwalls run above 60 hz. if you don't allow them to run at design conditions, you will be back. we have seen them as high as 97 hz...
  4. Replies
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    999

    the best way is to calculate clamp length, long...

    the best way is to calculate clamp length, long heat and short heat lengths. remember as you bend the pipe, especially on large bore above say six inch, the heat lengths really start to matter. ...
  5. mammoth units are generally pretty good. they...

    mammoth units are generally pretty good. they also stand behind their products.
  6. check your charge using proper methods, mst of...

    check your charge using proper methods, mst of their startup guys only use the computer. common problem.
  7. Replies
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    399

    governair is usually custom built. if you simply...

    governair is usually custom built. if you simply replace compressor tonnage using a big three box, you just inherited a problem job. I would advise against that. make the drive
  8. its about performance. what exactly do you...

    its about performance. what exactly do you consider large, and what is your application?
  9. Replies
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    5,068

    do the laws of your state require workers...

    do the laws of your state require workers compensation insurance or general liability insurance? does the "friend" understand what can happen if he makes a mistake if he hurts or kills someone?...
  10. anything over fifty volts is considered high...

    anything over fifty volts is considered high voltage or line voltage. it must be serviced with power off, or if power must be applied for troubleshooting purposes, you need to wear protection. a full...
  11. Thread: EEV

    by flange
    Replies
    14
    Views
    1,633

    Do you have the instructions for the board? It...

    Do you have the instructions for the board? It could be that the valve was not set up properly,, or that our themristor has failed. We have seen a number of their cheap ass thermistors fail on...
  12. Replies
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    801

    I saw this elsewhere. I am almost positive it was...

    I saw this elsewhere. I am almost positive it was a leaking acetylene cylinder.
  13. Thread: Managing...

    by flange
    Replies
    12
    Views
    836

    first, you need the backing of your shop. you...

    first, you need the backing of your shop. you cannot get rid of a guy if the shop wont let you. there, I said it. next, you need to set expectations. finally, you need to babysit. if they aren't...
  14. Replies
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    579

    find the furthest point in the system away from...

    find the furthest point in the system away from the boiler. make sure your air venting works well. install a gage. turn on boiler at lowest pressure possible and check gage. once you show any...
  15. Replies
    1
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    414

    on air cooled models they use a safey switch...

    on air cooled models they use a safey switch wired into that circuit as well. The switch is located inside the pecker head of each othe condenser fan motors. haven't seen one on water cooled yet,...
  16. Thread: VFD's

    by flange
    Replies
    22
    Views
    2,361

    This is not wholly correct. you CAN INDEED have a...

    This is not wholly correct. you CAN INDEED have a disconnect between a drive and motor, HOWEVER, the disconnect should have a set of contacts to open the safety circuit of the drive in order to...
  17. Replies
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    2,341

    York, trane, mcquay, carrier, mltistack, smardt,...

    York, trane, mcquay, carrier, mltistack, smardt, mammoth, webco, governair, ventrol, venmar, ICE, munters, DesChamps, pool pack, just ot name a few
  18. Replies
    10
    Views
    609

    3 gpm per ton is rule of thumb, and does not...

    3 gpm per ton is rule of thumb, and does not account for anything other than estimating maximum required flow rate. look at the differences in compression ratio for example. does a compressor have to...
  19. Replies
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    984

    For the refrigerated warehouse portion, you will...

    For the refrigerated warehouse portion, you will need properly built structure. since this is new construction in texas, things to look at first are r values of walls, roof. better to spend money on...
  20. coleman is same as York or luxaire. there are...

    coleman is same as York or luxaire. there are different grades within each brand though, not sure what the lx is. more important is quality of install than name on box.
  21. do you have standard or electronic metering? do...

    do you have standard or electronic metering? do you have ots of computers or high end TV's plugged in? Even though electronic devices are turned off, many still pull power. size of home is only one...
  22. if this isn't sold, pm me please.

    if this isn't sold, pm me please.
  23. Replies
    15
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    2,682

    so new drive on existing motors?

    so new drive on existing motors?
  24. Thread: BAC damper

    by flange
    Replies
    4
    Views
    600

    mobil coat, also known as mobilrama. loosens...

    mobil coat, also known as mobilrama. loosens dampers well, but stinks a bit.
  25. Thread: microns

    by flange
    Replies
    18
    Views
    1,617

    one site now requires below 200 and hold for four...

    one site now requires below 200 and hold for four hours.
  26. Replies
    8
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    1,063

    I live in bucks county, common problem that is...

    I live in bucks county, common problem that is getting worse due to too much building and not enough drainage.
  27. Replies
    26
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    2,369

    grab ye a psych chart and make a comparison of...

    grab ye a psych chart and make a comparison of some of the midatlantic areas to arizona. mid atlantic regularly sees near 100 at rh in the 45-65% range, as compared to 115-120 out there at 10-15%.
    ...
  28. Replies
    9
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    1,044

    if it was part winding start, chances would be...

    if it was part winding start, chances would be greater of hurting it. standard three phase should hopefully be ok.
  29. Replies
    8
    Views
    1,063

    the best solution is to have the waterproofing...

    the best solution is to have the waterproofing guys trench around the outside of your home, then seal the walls of the basement to prevent infiltration through the walls. Then, when backfiling add...
  30. Replies
    90
    Views
    8,730

    its good work, and good pay, but man, lots of...

    its good work, and good pay, but man, lots of papers to read and file. its a job in itself. I know of one particular contractor who bids school work all winter, to be executed over the summer, then...
  31. Thread: unbelievable

    by flange
    Replies
    4
    Views
    774

    when did you move in next door?

    when did you move in next door?
  32. Replies
    90
    Views
    8,730

    also called "certified payroll reports", which...

    also called "certified payroll reports", which detail wages, fringes and taxes paid to each employee on P>R jobs. most areas have compliance officers, as deviation from these reports becomes a...
  33. Replies
    90
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    8,730

    I dont agree. Prevailing wage is one of the most...

    I dont agree. Prevailing wage is one of the most misinterpreted statutes around. Why is it in place, simple, ot protect geographic areas. Right now is a prime example. The economy sucks in many...
  34. Thread: So confused

    by flange
    Replies
    8
    Views
    781

    I make a mistake, get in trouble, go away for six...

    I make a mistake, get in trouble, go away for six months and try again. I just cannot get it right.
  35. Replies
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    8,730

    I hear this argument a lot, that union shops only...

    I hear this argument a lot, that union shops only do government work. Its extremely funny, and completely untrue. I am a union employer, and do work for close to 90% private business ,with a...
  36. Replies
    90
    Views
    8,730

    for the uninitiated, the "union" isnt what you...

    for the uninitiated, the "union" isnt what you think. the union is a group of like minded people. they perform specific tasks such as hvac, sheetmetal or plumbing among others. the group elects...
  37. Replies
    9
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    1,232

    Assuming your walls go up to the deck, you will...

    Assuming your walls go up to the deck, you will also need a smoke damper. buy yourself a smoke damper with wall sleeve, then add a backdraft on the end with an adjustable weight. setup the backdraft...
  38. Replies
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    1,372

    anyone in the vicinity of a crane is empowered to...

    anyone in the vicinity of a crane is empowered to do the all stop. where was everyone else???
  39. Replies
    12
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    1,070

    you act like its the first stadium to get it. old...

    you act like its the first stadium to get it. old hat man.
  40. Replies
    14
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    3,102

    will it make their products any better?

    will it make their products any better?
  41. Replies
    39
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    4,070

    1991 we rebuilt a 75000 cfm air handler in a high...

    1991 we rebuilt a 75000 cfm air handler in a high rise over eight days. stayed on the job from friday night to sunday midnight. went home slept a few and went back until weds night. slept abour five...
  42. Replies
    3
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    740

    I disagree. The biggest issue the industry has is...

    I disagree. The biggest issue the industry has is owners racing to the bottom, but not knowing the cost of doing business and charging appropriately. Almost everything has gone up in price over the...
  43. Replies
    0
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    318

    Carrier VVT--north jersey guy

    A few years ago, one of you controls types out of north central NJ did some Carrier work for me. I cannot for the life of me find your contact info, but may have some work for you up in your...
  44. I also disagree. There are plenty of units that...

    I also disagree. There are plenty of units that are open flame and certified safe ot use indoors. I have five of them, 3,000,000 btuhs each running in a buiding right now.

    you need to verfiy...
  45. there are matchup sheets available from the...

    there are matchup sheets available from the manufacturer, vendor, and contractor to show design sensible and latent energy for a specific combination. ask for that.
  46. Replies
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    5,076

    Seems like you are underfired as stated. may be...

    Seems like you are underfired as stated. may be due to many issues. check manifold pressure, entering gas pressure, operation of all stages, rotation of induced draft fan, cleanliness of heat...
  47. Replies
    1
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    796

    to size lines, here is a QUICK RUNDOWN of what...

    to size lines, here is a QUICK RUNDOWN of what you need to know. First, a load calc to determine how much heat you need in a specific location. Then you need to select emitter type, rad, radiant,...
  48. Replies
    14
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    2,975

    Some of the best plant operations guys going have...

    Some of the best plant operations guys going have come right out of the U.S. Navy. They have excellent training programs, in addition to teaching the intangibles such as attitude, preparedness among...
  49. Replies
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    7,804

    I got som fancy, very expensive, pillow top deal...

    I got som fancy, very expensive, pillow top deal and friggen hate it. I am looking too but cannot decide where to drop the next couple of thousand bucks. Was thinking temper pedic, but not sure. Any...
  50. Replies
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    4,602

    NFPA 70E is a complicated statute, and for better...

    NFPA 70E is a complicated statute, and for better understanding one should read it in its entirety. The premise is...electricity is dangerous, and we want you to go home to your family tonite. If you...
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