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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: 6,565
    10-31-2011, 07:41 PM Go to last post
    • Replies: 0
    • Views: 5,639
    10-31-2011, 07:37 PM Go to last post
  1. Normal Thread Normal Threads

  2. Question 407C added to a 410A unit?

    Started by hvacmam, 07-29-2010 02:14 PM
    • Replies: 1
    • Views: 726
    07-29-2010, 10:40 PM Go to last post
  3. Confused HELP

    Started by DANNYBE, 07-28-2010 12:20 PM
    • Replies: 5
    • Views: 725
    07-29-2010, 12:54 PM Go to last post
  4. Wiring Diagram

    Started by harley2009, 07-29-2010 10:24 AM
    • Replies: 0
    • Views: 579
    07-29-2010, 10:24 AM Go to last post
  5. Confused Carrier 30HX ground fault

    Started by thermopoot69, 07-22-2010 11:55 AM
    • Replies: 10
    • Views: 2,820
    07-28-2010, 06:15 PM Go to last post
  6. High humidity levels and evaporator delta T

    Started by hvacpope, 07-24-2010 09:48 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 4,073
    07-28-2010, 03:03 PM Go to last post
    • Replies: 2
    • Views: 2,074
    07-28-2010, 12:20 PM Go to last post
  7. White Roof Sapping Your Energy

    Started by madhat, 06-17-2010 09:50 PM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 3,496
    07-28-2010, 08:06 AM Go to last post
  8. Oil Migration problem on Carrier 23XL Chiiler

    Started by cxagent, 07-23-2009 03:48 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 4,476
    07-27-2010, 10:34 PM Go to last post
  9. Trane Expansion Valve

    Started by NC Small Biz, 07-26-2010 05:35 PM
    • Replies: 5
    • Views: 1,392
    07-27-2010, 08:24 PM Go to last post
  10. York AHU Supply Fan Overload Problem

    Started by Vulcan Classic, 07-27-2010 02:12 PM
    • Replies: 6
    • Views: 1,844
    07-27-2010, 06:42 PM Go to last post
  11. High Suction Press.

    Started by vernilla, 07-23-2010 05:39 PM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 2,419
    07-26-2010, 07:45 PM Go to last post
  12. ? on Trane Split System Condenser

    Started by marshman, 07-26-2010 03:34 PM
    • Replies: 0
    • Views: 801
    07-26-2010, 03:34 PM Go to last post
  13. return/supply cfm ratio

    Started by Tommy1010, 04-20-2010 12:50 PM
    • Replies: 10
    • Views: 6,803
    07-25-2010, 02:40 PM Go to last post
  14. 19XL, my next victim

    Started by chiller mekanik, 09-20-2006 12:10 AM
    4 Pages
    1 2 3 4
    • Replies: 46
    • Views: 5,864
    07-25-2010, 07:05 AM Go to last post
  15. EMS caculator

    Started by sstan42, 07-25-2010 01:48 AM
    • Replies: 0
    • Views: 882
    07-25-2010, 01:48 AM Go to last post
    • Replies: 2
    • Views: 1,946
    07-24-2010, 07:36 AM Go to last post
  16. copelemetic torque specs

    Started by supertek65, 07-22-2010 07:04 PM
    • Replies: 7
    • Views: 1,060
    07-23-2010, 08:39 PM Go to last post
  17. Lithium Bromide Dilemma

    Started by zsmillie, 07-22-2010 11:56 AM
    • Replies: 11
    • Views: 2,453
    07-23-2010, 06:30 PM Go to last post
  18. Supermarket Case question

    Started by 70runner, 07-22-2010 10:29 PM
    • Replies: 5
    • Views: 566
    07-23-2010, 04:10 PM Go to last post
  19. Calculating Cooling Capacity of AC Units

    Started by GalacticStrife, 07-23-2010 10:24 AM
    • Replies: 2
    • Views: 4,194
    07-23-2010, 11:45 AM Go to last post
    • Replies: 0
    • Views: 534
    07-23-2010, 09:34 AM Go to last post
  20. Process Chiller Not Cooling Correctly

    Started by apprentice3, 07-20-2010 06:39 PM
    • Replies: 10
    • Views: 1,795
    07-23-2010, 12:16 AM Go to last post
  21. reusing recovered gas

    Started by whoaghi, 07-20-2010 09:11 PM
    • Replies: 9
    • Views: 1,416
    07-22-2010, 10:25 PM Go to last post
  22. Trane RTU with Reliatel locks out

    Started by docgeorge, 07-12-2010 06:54 PM
    • Replies: 6
    • Views: 2,090
    07-22-2010, 09:03 PM Go to last post
  23. Earth Fault

    Started by ascj, 07-21-2010 07:25 PM
    • Replies: 7
    • Views: 1,330
    07-22-2010, 06:20 PM Go to last post
  24. Trane SFHG124 Wiring

    Started by flying_floyd, 07-22-2010 03:10 PM
    • Replies: 0
    • Views: 458
    07-22-2010, 03:10 PM Go to last post
    • Replies: 1
    • Views: 471
    07-22-2010, 12:02 PM Go to last post
    • Replies: 5
    • Views: 744
    07-22-2010, 12:00 PM Go to last post
  25. 2 and 4 pipe hvac commercial school

    Started by willy35, 04-18-2005 10:12 PM
    • Replies: 4
    • Views: 7,431
    07-21-2010, 08:35 PM Go to last post
  26. carrier 30gb circa 1988

    Started by stanbyyourword, 07-18-2009 03:36 AM
    • Replies: 11
    • Views: 2,171
    07-21-2010, 06:28 PM Go to last post
  27. Landis&Gyr thermostats with override

    Started by geochurchi, 07-20-2010 02:09 PM
    • Replies: 8
    • Views: 813
    07-21-2010, 06:04 PM Go to last post
  28. Westinghouse chiller

    Started by Heavymetalmover, 07-21-2010 11:24 AM
    • Replies: 1
    • Views: 1,072
    07-21-2010, 11:29 AM Go to last post
    • Replies: 21
    • Views: 3,552
    07-21-2010, 09:52 AM Go to last post
  29. Confused High Discharge PDIG

    Started by BIG KEITH, 07-20-2010 10:18 PM
    • Replies: 1
    • Views: 458
    07-20-2010, 10:33 PM Go to last post
  30. Confused AAON TRouble

    Started by hvactech80, 07-20-2010 06:06 PM
    • Replies: 1
    • Views: 1,305
    07-20-2010, 09:53 PM Go to last post
  31. setting your suction press.

    Started by newbe0507, 07-18-2010 10:52 PM
    • Replies: 9
    • Views: 794
    07-20-2010, 06:10 PM Go to last post
  32. 410a Conversion from r-22

    Started by pringlel, 07-01-2010 01:21 PM
    4 Pages
    1 2 3 4
    • Replies: 51
    • Views: 4,934
    07-20-2010, 01:30 PM Go to last post
  33. York 410A 20 ton startup

    Started by The Reaper, 07-20-2010 12:49 PM
    • Replies: 0
    • Views: 720
    07-20-2010, 12:49 PM Go to last post
  34. Cool Air cooled Chiller from Italy

    Started by whitepoundog, 07-13-2010 09:35 PM
    • Replies: 6
    • Views: 1,190
    07-20-2010, 11:44 AM Go to last post
  35. PUMPOUT UINT COMPRESSOR

    Started by can, 07-18-2010 01:38 AM
    • Replies: 4
    • Views: 731
    07-20-2010, 12:37 AM Go to last post
  36. OLD Swimming Pool, NEW HVAC reqd

    Started by acstewart25, 07-13-2010 02:51 AM
    • Replies: 8
    • Views: 1,350
    07-19-2010, 10:47 AM Go to last post
    • Replies: 0
    • Views: 616
    07-19-2010, 12:28 AM Go to last post
  37. Confused SIMPLE HONEYWELL TSTAT QUESTION

    Started by gtt, 07-18-2010 12:05 PM
    • Replies: 3
    • Views: 784
    07-18-2010, 10:39 PM Go to last post
  38. Hmm 06D breakdown; mixed refrigerant?

    Started by whoaghi, 07-14-2010 08:45 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,357
    07-18-2010, 07:58 PM Go to last post
  39. GLYCOL DEGRADATION

    Started by pat461, 07-06-2010 06:11 PM
    • Replies: 8
    • Views: 3,345
    07-18-2010, 07:52 PM Go to last post
  40. ESP on large air handlers?

    Started by jpsmith1cm, 07-16-2010 10:21 PM
    5 Pages
    1 2 3 4 5
    • Replies: 57
    • Views: 4,654
    07-18-2010, 03:30 PM Go to last post
  41. AIRFLOW LVLT

    Started by ruzfactor, 06-29-2010 10:29 AM
    • Replies: 2
    • Views: 735
    07-18-2010, 12:35 AM Go to last post
  42. Unhappy It's been a MONTH and swamp cooler STILL not fixed. Help!!

    Started by doodlebug1, 07-12-2010 02:14 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 1,928
    07-17-2010, 01:04 PM Go to last post
  43. ROBUR

    Started by HvAckid82, 09-06-2009 07:45 AM
    • Replies: 7
    • Views: 1,964
    07-17-2010, 10:35 AM Go to last post
  44. Looking For OEM TXV

    Started by KQQLCAT, 07-16-2010 11:15 AM
    • Replies: 6
    • Views: 952
    07-17-2010, 07:01 AM Go to last post

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