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  1. Replies
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    Views
    495

    I'm goin fishen tomorrow. I have successuffly...

    I'm goin fishen tomorrow.
    I have successuffly ran this unit since sunday on return air. I have installed a room sensor and will move control to that tommorow, amongst other parameter changes.
    The...
  2. Replies
    3
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    495

    mcquay mps set-up questions

    set a new mcquay mps062elas50 on a roof this weekend to replace an older model mcquay. The zone stat does not appear to be compatible with this new unit (p/n 665404b-09).
    The plan is to use this...
  3. sounds like a great idea. you just need to...

    sounds like a great idea.
    you just need to ask for a few numbers. obviously passing air across the coil and removing the moisture will remove btu's. cold air is going to come out the supply side...
  4. Replies
    2
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    465

    30*F suction line temp. ya, you're probably...

    30*F suction line temp. ya, you're probably bringing liquid back, or poor heat exchange at the evap.
    I guess the slugging problem was never resolved from the first burn-out. with a 16*f split, i...
  5. Replies
    6
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    652

    Thank you gentleman, york supplier never...

    Thank you gentleman, york supplier never mentioned superseded part. the camstat that's in ther is performing as should now that I corrected the rotation. I think with it facing the heat exchanger and...
  6. Replies
    6
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    652

    old york fan limit question

    Fan limit switch for this older model york furnace is no longer available. Some one (who knows who or when) replaced it with a camstat p/n fal3c05td120a .
    It looks to have been installed wrong,...
  7. Replies
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    366

    Zones is very basic, simple is always nice. I...

    Zones is very basic, simple is always nice. I have seen a handful of these operate for years with out a hitch. I find most zoning problems are related to set point adjustments, bypass damper issues,...
  8. Replies
    1
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    285

    honeywell temp set point controller

    I see these around once in a blue-moon. Could never find the iom for Honeywell T678B.
    anyone know at what temp of osa this sets the set point up?

    My understanding of this controller is:
    1...
  9. Replies
    2
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    315

    which did you choose? I think rubber pads sounds...

    which did you choose?
    I think rubber pads sounds cheap and easy, but springs sound good if you proportion them correctly. I just replaced broken springs on a Copeland semi herm.
    go to carrier's...
  10. Replies
    2
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    384

    mason industries makes great stuff. i like the...

    mason industries makes great stuff. i like the I-beam idea too, easy. I'm assuming this raising is for run-off of water? whatever you put down there, make sure the rain and sun won't rust/disolve it.
  11. Replies
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    991

    5 plus years? commercial isn't really some...

    5 plus years? commercial isn't really some specialized industry, just a few changes from the residential market. Be prepared to be low guy on the totem pole. Most shops need a few cheap guys to run...
  12. Replies
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    2,700

    phosgene gas takes my breath away, not sure what...

    phosgene gas takes my breath away, not sure what the epa would have to say about this.
    Does refrigerant cook at brazing temp. we all know about burn-outs, but I bet those are flashes well over...
  13. Replies
    43
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    2,212

    so, $25 an hour is about 50k a year? what's an...

    so, $25 an hour is about 50k a year? what's an automotive mechanic in west palm beach cost you an hour? I believe that's a good starting point to reference journeyman wage in your area.
    A valuable...
  14. Replies
    16
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    1,093

    don't you feel kinda cheap, when someone starts a...

    don't you feel kinda cheap, when someone starts a post, but never lets you know how it turned out. some of the best knowledge is gained from others experiences.
  15. burned out? like caught on fire? voltage drop...

    burned out? like caught on fire?
    voltage drop would be my first suspect. When the voltage goes down, the current goes up, and so does the heat. If it's a coil for a load, like the strip heat, maybe...
  16. Comp Contactor Fail - Circuit 2 Problem: The...

    Comp Contactor Fail -
    Circuit 2
    Problem: The Compressor
    Contactor for Circuit. #2 has
    malfunctioned.
    The circuit #2 compressor
    proving input is detected
    closed continuously for more
    than 3...
  17. Shoot me your email address, and the model you...

    Shoot me your email address, and the model you have, i'll mail you the iom. Can't disiffer your problem from your thread... ne more details?
  18. Replies
    6
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    796

    replay

    Had a similar problem on another brand. Found the ice sheets forming from ice not completley falling off the sheet, defrost was running too long, and poor cube formation.
    I cleaned the float assy,...
  19. Replies
    7
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    925

    statitrac update

    After speaking with tech support, found out my rtm and ecem boards are 15 years old. Apparently the more updated boards allow for instant ex fan enabeling, as apposed to the lag of exhaust fan coming...
  20. Replies
    7
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    925

    shotgun this problem

    Gentlemen, thank you for the replies.
    I have isolated this issue to exhaust not keeping up with economizer. Building doors swing open at .12inwc, the osa dampers are at a min 5% 100vfd, 12% 0vfd. I...
  21. Replies
    7
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    925

    intellipak building static issue

    Problem is occasional opening of building doors.
    two intellipaks and two duct furnaces for dual duct vav system. Bot intellis use statitrac, setpoint for bldg static on bot is. 03, .04 dead band....
  22. Replies
    8
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    997

    love me them books

    Folks,
    I would like some reconmondations on refer books. I have found over the years my training in other asspects of the hvac trade help me though refer service calls, but i need to get some...
  23. Replies
    5
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    1,053

    He hit the nail right on the head. Anything below...

    He hit the nail right on the head. Anything below 130 deg causes condensing, unless this is a high-e boiler, it won't like that at all. BTW, are your cool only stats pneumatic? If so, you may be able...
  24. Replies
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    1,053

    at such a low return temp, do you get a lot of...

    at such a low return temp, do you get a lot of condensation from the boiler?
  25. Replies
    6
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    1,256

    Trane Voyager low loads

    My customer is interested in using two exsisting Trane YSC120A4RLA's to condition a large space of about 6,000 ft2, 8' ceilings at 64 to 68 degrees 24/7. Each unit is ducted for it's aprox 3,000ft2....
  26. Replies
    2
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    975

    constant volume equip, vav controlled

    New Trane Voyager - 15 ton downflow curbstyle. All duct supply and return preportioned and sized correctly. 2 stg heat and 2 stg cool. Replaced older Trane unit, due to swiss cheese heat xchnger....
  27. minimum ity heat postion, heating set point,...

    minimum ity heat postion, heating set point, priority local heat, zone sensor calibration. Have your service tech look into those four points.
  28. Replies
    4
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    740

    There are companys that make heat tape, you could...

    There are companys that make heat tape, you could set that around/on the metal, and put it on a temp switch, to act as a defrost.
  29. Replies
    6
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    1,108

    upon power up. the varitracII (not sure which mod...

    upon power up. the varitracII (not sure which mod your running) executes the following sequence of operation:
    calibrates the bypass control loop, scans all ucm's, determines the system mode,...
  30. Replies
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    26,837

    Try pulling wires straight from disconect to...

    Try pulling wires straight from disconect to motor, then fire it up. if it runs fine, you'll see it in the amps.
  31. Replies
    5
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    673

    seized-up low temp comp

    New account, found walk-in (0* to -10) with defrost control acting-up (ie contacts not operating), compressor locked-up, and r416a as refrigerent.
    I will replace this compressor, but I want to...
  32. furnace/btu sizing for house in Truckee california

    Going to install the central heating for my cousins 1100 sqft house in Truckee (close to lake tahoe), but I'm from the South bay, and we don't deal with sub zero winters.
    He's budgeting this in,...
  33. 90t intellipak eating scrolls for breakfast

    I was handed and account we have had for a few years, It has two identical 90 ton trane intellipaks.(sxhgd114) In the last two years, one unit has had no compressor replacements, and 5 of six...
  34. Replies
    4
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    872

    thanks for the replys

    i haven't been back yet, still waiting for the txv.
    the unloaders are electric, 1200 microns was after 3 nitrogen purges/tripple evac, i had also changed the oil.
    the compressor was a new one from...
  35. Replies
    4
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    872

    06e comp start-up issues

    I was given an carlyle 06et265360 to start-up on a carrier box car, one of the two unloading heads won't load-up... or so i think.

    This compressor sat flat on gas for 7 months while a replacement...
  36. Replies
    1
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    394

    Air comp station

    Ingersoll rand T30, 10hp m/n 2545
    just started her up for the first time in 6 years, (sat unused) she pumped air, but has an air bleeding back from the head back through the intake filter. Noticed...
  37. Replies
    7
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    1,342

    I agree...

    I found this system, still old and arcaic, to be quite nice.
    But, I also figured out what was happening. Turns out when the feild conversion from velocity sensing to static sensing in the duct...
  38. Replies
    7
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    1,342

    good info

    what's a good % to utilize? Does my deadband setting mean it will only function that deadband between my % of static setpoint?
    Can I clamp the bypass to only open to a certain percentage in any...
  39. Replies
    7
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    1,342

    that makes sence

    This makes sence. So, what are typical static setpoints above actual static value? If 40% above actual static is being maintained, should I consider a higher or lower setting? I think 140% is the...
  40. Replies
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    1,342

    yup

    Static set point was 1.4inwc. I had varified 3 of 5 dampers opened.
  41. Replies
    2
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    524

    trane varitrac 2 bypass

    my problem: too hot of return air in heat...
    Equipment - Trane Voyager YCD180 - currently no TCI-3 board sngl stg heat 2 stg cool 15t
    Varitrac 2 cntrl sys from 1997, 5 zone dampers 1 bypass
    ...
  42. Replies
    7
    Views
    1,342

    trane varitrac 2 bypass

    my problem: too hot of return air in heat...
    Equipment - Trane Voyager YCD180 - currently no TCI-3 board sngl stg heat 2 stg cool 15t
    Varitrac 2 cntrl sys from 1997, 5 zone dampers 1 bypass

    ...
  43. Thread: monthly pm

    by Aircooled81
    Replies
    5
    Views
    607

    monthly pm

    Contact of mine asked for monthly pm on their critical equipment. I figure at this point, they'll hold my feet to the fire if something was to go wrong with this equipment. I'll explain to him...
  44. Replies
    2
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    435

    monitering software/hardware

    lookinig for cost effective equipment monitering software. Account of mine has three critical units. I'd like to install hardware to monitor temps, pressures, amperage and status, then feed that info...
  45. Replies
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    319

    horz res furnace

    This fridgidaire was installed 8 years ago. My buddy asked me to help him with it, heat wasn't working. Turns out 24v to gas valve was not opening main gas valve solenoid. He replaced the gas valve,...
  46. Replies
    13
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    1,622

    had a customer with a walk-in 3 months ago, that...

    had a customer with a walk-in 3 months ago, that was supposed to hold 0 - -10*, they had me spend 3 days straight and overtime wrenching on it swearing up and down it just wasn't working any more,...
  47. Replies
    21
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    7,364

    i come across many old r12 units running 414 with...

    i come across many old r12 units running 414 with the oil replaced.
    not sure if you can just add create your own concoction of refrigerent mixture on your own - legally at least? - if that was what...
  48. Replies
    6
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    864

    the restriction could be moisture freezing up at...

    the restriction could be moisture freezing up at the txv, debris or a plugged drier. The TXV could have been the wrong tonnage.
    compressors that are bad have a hard time building up 400 psi...
  49. Replies
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    1,444

    i'm not sure, but the two year landmark sounds...

    i'm not sure, but the two year landmark sounds like a 'no compete'. This would be a contract you sign when selling your buisness and clientel to a buyer, that states you won't turn around and take...
  50. Replies
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    1,444

    Ask yourself, are they my customers? If so, how...

    Ask yourself, are they my customers? If so, how come you own them? And how does your shop own them. You own tools, vans and up to your mistakes. If you badmouth anyone to make yourself more...
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