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Forum: AOP Commercial HVAC

FOR EQUIPMENT OWNERS ONLY Questions and discussions regarding Commercial Buildings

  1. Sticky Thread Sticky Threads

  2. Sticky Thread >>READ THIS FIRST<< NO DIY? Why NOT??

    Started by Dad, 10-31-2011 07:41 PM
    • Replies: 0
    • Views: 5,822
    10-31-2011, 07:41 PM Go to last post
    • Replies: 0
    • Views: 4,942
    10-31-2011, 07:37 PM Go to last post
  1. Normal Thread Normal Threads

  2. Liebert BU067A: compressor unloader valve???

    Started by MrSlim, 02-16-2010 01:14 PM
    • Replies: 3
    • Views: 2,264
    06-21-2012, 10:35 PM Go to last post
  3. data aire nuisance trip

    Started by rockbeach, 06-17-2012 11:18 AM
    • Replies: 4
    • Views: 1,401
    06-20-2012, 09:45 PM Go to last post
  4. Micro-Channel

    Started by retube, 03-31-2011 06:43 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 4,645
    06-20-2012, 02:12 PM Go to last post
  5. Pre-Install advice for a Hotel in Mexico

    Started by markorm, 06-18-2012 01:00 PM
    • Replies: 1
    • Views: 670
    06-20-2012, 06:09 AM Go to last post
    • Replies: 1
    • Views: 1,270
    06-19-2012, 09:35 AM Go to last post
  6. McQuay WDC 063 oil pump

    Started by tomt, 04-21-2007 03:23 AM
    • Replies: 1
    • Views: 1,090
    06-16-2012, 01:09 PM Go to last post
  7. Weight of 50hp Century motor?

    Started by xFreebirdx, 03-19-2012 02:59 PM
    • Replies: 8
    • Views: 2,032
    06-16-2012, 01:28 AM Go to last post
  8. Oil change question

    Started by tikiman1, 06-15-2012 10:14 AM
    • Replies: 2
    • Views: 766
    06-15-2012, 10:58 PM Go to last post
    • Replies: 3
    • Views: 1,932
    06-13-2012, 10:06 PM Go to last post
  9. Hmm I need to know size of my unit

    Started by dreamer315, 06-11-2012 08:21 AM
    • Replies: 6
    • Views: 1,330
    06-12-2012, 10:13 PM Go to last post
  10. Siebe pneumatic valve

    Started by savage24, 11-11-2009 01:06 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 3,913
    06-12-2012, 12:14 PM Go to last post
  11. Would anyone decode these model Numbers?

    Started by Maikerum, 06-11-2012 03:16 PM
    • Replies: 6
    • Views: 1,942
    06-11-2012, 11:15 PM Go to last post
  12. Water leak from Rooftop unit

    Started by DeltaPnutz, 06-11-2012 09:38 PM
    • Replies: 2
    • Views: 1,050
    06-11-2012, 11:10 PM Go to last post
  13. Hmm Trane Model #?

    Started by vostro1, 06-10-2012 01:00 AM
    • Replies: 2
    • Views: 1,496
    06-10-2012, 10:51 AM Go to last post
  14. Hmm Decode Trane Model number

    Started by Paulica, 06-07-2012 10:07 PM
    • Replies: 3
    • Views: 3,866
    06-08-2012, 09:44 PM Go to last post
  15. Liebert Deluxe 3 display panel issue

    Started by Angel Carlo, 06-06-2012 02:48 PM
    • Replies: 4
    • Views: 1,084
    06-07-2012, 06:57 AM Go to last post
  16. Fan Sizing and V.A.V.'s

    Started by techservices, 05-13-2012 10:29 PM
    • Replies: 4
    • Views: 1,077
    06-07-2012, 06:29 AM Go to last post
  17. This is not a DIY post!

    Started by Ghlavenka, 06-04-2012 12:50 PM
    • Replies: 8
    • Views: 1,330
    06-05-2012, 09:29 PM Go to last post
    • Replies: 0
    • Views: 1,272
    06-04-2012, 06:33 PM Go to last post
  18. Mitsubishi Heavy Industries (MHI) Centrifugal Chiller

    Started by cklee, 08-22-2008 10:22 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 5,512
    06-04-2012, 01:21 PM Go to last post
  19. Suction pressure low, unit freezing

    Started by ol' blue, 06-02-2012 07:34 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 5,281
    06-04-2012, 05:18 AM Go to last post
  20. Condensor fan running backwards

    Started by sborocom, 05-31-2012 11:07 PM
    backwards, condensor, fan
    • Replies: 4
    • Views: 1,528
    06-02-2012, 09:35 PM Go to last post
  21. Older Trane Equipment

    Started by tjeffers, 05-31-2012 05:03 PM
    • Replies: 0
    • Views: 1,045
    05-31-2012, 05:03 PM Go to last post
  22. Filters In Fan Powered Boxes

    Started by rains612, 05-29-2012 08:42 AM
    • Replies: 2
    • Views: 1,313
    05-30-2012, 11:37 PM Go to last post
  23. HVAC in the mushroom industry?

    Started by ConnorMeyers, 05-29-2012 09:27 AM
    commercial, commercial hvac, hvac
    • Replies: 6
    • Views: 2,966
    05-30-2012, 09:48 PM Go to last post
  24. Hmm Trane Model #

    Started by dhigs, 05-29-2012 07:58 PM
    • Replies: 2
    • Views: 1,124
    05-30-2012, 08:56 AM Go to last post
  25. another liebert humidity problem

    Started by brownplus, 03-27-2012 06:41 PM
    • Replies: 2
    • Views: 1,732
    05-29-2012, 10:42 AM Go to last post
  26. I have a liebert humidity problem also

    Started by CargCorleg, 05-28-2012 11:37 AM
    • Replies: 2
    • Views: 716
    05-29-2012, 10:14 AM Go to last post
  27. wastewater lineset failure

    Started by jswin, 04-23-2012 01:26 PM
    • Replies: 9
    • Views: 1,420
    05-29-2012, 10:05 AM Go to last post
  28. Variable air volume (VAV)

    Started by Sami Sarhan, 05-19-2012 02:19 AM
    • Replies: 2
    • Views: 1,004
    05-28-2012, 11:52 PM Go to last post
  29. Condo cooling - Fan coil issue or Insuffiency

    Started by QuantumJump, 05-25-2012 12:22 PM
    • Replies: 4
    • Views: 3,436
    05-26-2012, 07:37 PM Go to last post
  30. Dual circuit over lapping condensers

    Started by Cat_Utilities, 05-24-2012 08:31 PM
    • Replies: 3
    • Views: 901
    05-25-2012, 08:49 PM Go to last post
  31. Replacement for an Invensys MN-S4?

    Started by Ra25, 05-25-2012 01:00 PM
    • Replies: 1
    • Views: 1,089
    05-25-2012, 06:47 PM Go to last post
  32. Thumbs up HVAC equipment selection

    Started by abbasamazai, 05-11-2012 02:08 PM
    • Replies: 5
    • Views: 1,521
    05-18-2012, 12:42 PM Go to last post
  33. Question Another Txv power head

    Started by bwd111, 05-04-2012 11:52 AM
    • Replies: 3
    • Views: 1,342
    05-17-2012, 05:54 PM Go to last post
  34. !!!! RC Group - Eagle T300.P.4.Y2.D !!!!

    Started by mateiserban, 05-17-2012 07:04 AM
    • Replies: 0
    • Views: 933
    05-17-2012, 07:04 AM Go to last post
  35. Tracer Summit Database Error, please help

    Started by Dwaino, 04-24-2012 02:16 PM
    • Replies: 3
    • Views: 926
    05-15-2012, 06:25 AM Go to last post
  36. Smoke detectors / rtu units

    Started by Acmaster111, 05-02-2012 03:41 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 3,816
    05-12-2012, 09:20 AM Go to last post
  37. Chiller 30Ran10 fault T116

    Started by jdejesus, 05-09-2012 09:15 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 2,549
    05-12-2012, 08:53 AM Go to last post
  38. heresite factory coating

    Started by mack*is*tired, 02-01-2006 04:41 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 6,938
    05-09-2012, 10:06 PM Go to last post
  39. York YS correct oil types

    Started by Cadrion, 05-08-2012 06:08 PM
    • Replies: 1
    • Views: 881
    05-08-2012, 09:25 PM Go to last post
  40. York Optiview problems

    Started by poppop, 05-17-2007 10:16 AM
    • Replies: 12
    • Views: 4,161
    05-08-2012, 03:56 PM Go to last post
  41. Thermmostat settings

    Started by BobbyL, 04-19-2012 09:37 PM
    • Replies: 6
    • Views: 1,364
    05-08-2012, 11:00 AM Go to last post
  42. Question Tonnage of a Trane unit?

    Started by Electron_Sam78, 05-08-2012 09:12 AM
    • Replies: 3
    • Views: 2,507
    05-08-2012, 10:49 AM Go to last post
  43. Lightbulb Pipe Material Selection

    Started by ChilledOutAussie, 05-06-2012 08:17 PM
    copper, stainless, steel
    • Replies: 6
    • Views: 2,738
    05-07-2012, 09:55 PM Go to last post
  44. 36'' chilled water pipes??

    Started by glennwith2ns, 01-30-2007 10:40 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 3,602
    05-06-2012, 10:17 AM Go to last post
  45. Floor level cold air distribution

    Started by innova, 05-05-2012 06:53 AM
    • Replies: 1
    • Views: 835
    05-05-2012, 07:51 AM Go to last post
  46. Mcquay alr help

    Started by Kerik7, 05-04-2012 11:33 AM
    • Replies: 0
    • Views: 752
    05-04-2012, 11:33 AM Go to last post
  47. cactus56

    Started by choya56, 04-18-2012 03:36 PM
    • Replies: 7
    • Views: 1,236
    05-04-2012, 11:02 AM Go to last post
  48. Fan-powered VAV's with a ducted return

    Started by psu104, 05-03-2012 02:38 PM
    • Replies: 4
    • Views: 1,378
    05-04-2012, 10:37 AM Go to last post

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