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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: 12,280
    10-31-2011, 07:41 PM Go to last post
    • Replies: 0
    • Views: 10,563
    10-31-2011, 07:37 PM Go to last post
  1. Normal Thread Normal Threads

  2. Rule of thumb: Sq Ft per ton of A/C

    Started by Possumking, 09-04-2008 08:02 PM
    2 Pages
    1 2
    • Replies: 24
    • Views: 230,853
    03-13-2012, 09:18 PM Go to last post
  3. cfm's in a ton

    Started by hootie, 04-03-2007 01:25 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 120,707
    09-13-2009, 12:05 AM Go to last post
  4. Hmm Trane Model Numbers?

    Started by Paulio, 03-09-2008 11:02 PM
    3 Pages
    1 2 3
    • Replies: 33
    • Views: 105,675
    04-22-2012, 04:19 PM Go to last post
  5. York Tonnage by Model Number?

    Started by bby, 05-28-2008 05:20 PM
    • Replies: 5
    • Views: 93,191
    05-28-2008, 11:29 PM Go to last post
  6. Icing up due to overcharge?

    Started by hsteiner, 04-03-2005 10:05 AM
    12 Pages
    1 2 3 4 5 6 ... 12
    • Replies: 150
    • Views: 82,706
    08-01-2012, 08:21 PM Go to last post
  7. Trouble shooting Mr. Slim?

    Started by george42, 05-30-2004 02:55 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 73,402
    08-03-2004, 04:12 AM Go to last post
  8. Arrow VAV vs VVT

    Started by dneil75, 01-26-2005 01:39 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 63,856
    03-11-2013, 09:54 PM Go to last post
  9. Where are you from?

    Started by _knight_, 08-17-2006 09:13 AM
    27 Pages
    1 2 3 4 5 6 ... 27
    • Replies: 339
    • Views: 62,800
    04-12-2009, 01:43 PM Go to last post
  10. York Ycas Chiller Failures

    Started by acjourneyman, 10-25-2007 08:26 PM
    12 Pages
    1 2 3 4 5 6 ... 12
    • Replies: 153
    • Views: 61,749
    01-31-2011, 03:50 PM Go to last post
  11. York/Coleman model nomenclature

    Started by GenoMan, 06-13-2007 02:18 PM
    • Replies: 12
    • Views: 50,448
    12-17-2010, 11:28 AM Go to last post
  12. Confused Unlocking a Trane Thermostat

    Started by hjana1978, 01-11-2005 05:18 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 48,915
    10-29-2011, 02:12 AM Go to last post
  13. high suction pressure

    Started by chillout, 07-18-2004 11:42 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 46,940
    10-20-2011, 10:01 PM Go to last post
    • Replies: 77
    • Views: 43,413
    07-22-2012, 05:58 PM Go to last post
  14. Circuit Setter

    Started by etheric999, 12-09-2007 07:00 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 42,957
    11-28-2010, 02:30 PM Go to last post
  15. Confused Fan External Static Pressure??

    Started by starter, 04-24-2006 12:01 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 42,284
    05-28-2009, 05:03 PM Go to last post
  16. Confused out of ideas

    Started by fruecrue, 12-23-2009 08:20 PM
    29 Pages
    1 2 3 4 5 6 ... 29
    • Replies: 374
    • Views: 41,819
    05-18-2010, 05:53 PM Go to last post
  17. Sensible vs Latent heat

    Started by DCN289, 03-13-2008 12:28 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 41,313
    03-26-2008, 11:36 PM Go to last post
  18. condenser approach

    Started by chillered, 01-27-2006 01:00 AM
    • Replies: 11
    • Views: 38,918
    02-15-2006, 12:49 PM Go to last post
  19. are YORK techs bailing?

    Started by streetsmarts, 10-08-2006 11:30 AM
    17 Pages
    1 2 3 4 5 6 ... 17
    • Replies: 208
    • Views: 38,575
    12-06-2008, 09:40 AM Go to last post
  20. Trane vs. York centrifugal

    Started by facilitiesguy, 02-13-2008 04:21 PM
    13 Pages
    1 2 3 4 5 6 ... 13
    • Replies: 159
    • Views: 37,934
    05-19-2008, 09:25 PM Go to last post
  21. How a CRAC unit works -- DC

    Started by Boots22, 04-02-2007 02:46 PM
    • Replies: 12
    • Views: 37,542
    04-06-2007, 11:30 AM Go to last post
  22. TRANE Tech Support

    Started by pete_d, 05-13-2008 11:50 AM
    2 Pages
    1 2
    • Replies: 21
    • Views: 37,315
    05-19-2008, 09:34 AM Go to last post
  23. BTU/hr calculation

    Started by pwn01, 08-03-2007 11:22 PM
    3 Pages
    1 2 3
    • Replies: 34
    • Views: 37,177
    09-01-2007, 05:13 PM Go to last post
  24. Lochinvar Boiler Flame Failure Problem

    Started by jogas, 03-08-2007 05:48 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 35,069
    10-06-2007, 08:49 PM Go to last post
  25. Confused York Tech support

    Started by neilvac, 11-17-2005 08:03 PM
    • Replies: 8
    • Views: 34,285
    11-28-2005, 08:25 PM Go to last post
  26. Question Fan Cycle Controls

    Started by hvac2379, 04-06-2006 03:39 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 34,022
    04-22-2009, 06:51 PM Go to last post
  27. Condensing units vs dry coolers?

    Started by Grawburg, 06-21-2008 03:47 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 33,681
    12-30-2011, 02:14 PM Go to last post
  28. daikin vs mitsubishi

    Started by kaehvac, 02-21-2008 09:47 AM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 33,458
    10-04-2011, 09:57 AM Go to last post
  29. Liebert CRAC unit - short cycle problem

    Started by Hutch, 07-15-2009 01:09 PM
    3 Pages
    1 2 3
    • Replies: 27
    • Views: 31,846
    10-03-2011, 08:52 PM Go to last post
  30. Confused suction line freezing

    Started by shultz440, 06-11-2010 07:44 PM
    4 Pages
    1 2 3 4
    • Replies: 39
    • Views: 31,517
    06-15-2010, 08:14 PM Go to last post
  31. 3 phase compressor check

    Started by Ricky Dale, 10-31-2009 01:34 AM
    8 Pages
    1 2 3 4 5 6 ... 8
    • Replies: 102
    • Views: 31,218
    01-04-2010, 08:15 PM Go to last post
  32. Question how do you calculate condensor subcooling?

    Started by ptrck, 10-11-2004 08:45 PM
    • Replies: 2
    • Views: 30,140
    10-11-2004, 10:01 PM Go to last post
  33. Pressure checking a Propane Line

    Started by Gebo, 02-02-2008 07:26 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 29,771
    02-04-2008, 08:43 PM Go to last post
  34. Hmm R-22 Refrigerant ' replacements '

    Started by freonguy, 03-04-2008 08:30 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 29,502
    07-23-2013, 09:32 PM Go to last post
  35. Honeywell fire/smoke damper actuators

    Started by who cares, 11-15-2005 11:59 PM
    4 Pages
    1 2 3 4
    • Replies: 44
    • Views: 28,887
    02-24-2012, 08:46 PM Go to last post
  36. Carrier chillers --- Approach temperatures

    Started by licensed to chill, 07-14-2008 06:44 PM
    3 Pages
    1 2 3
    • Replies: 35
    • Views: 28,770
    07-10-2009, 01:35 AM Go to last post
  37. Reheat Coils

    Started by Salvinian, 12-11-2007 11:30 AM
    • Replies: 10
    • Views: 28,291
    12-13-2007, 09:35 PM Go to last post
  38. Question CFM per room per person

    Started by propmanage, 11-28-2006 08:26 AM
    • Replies: 7
    • Views: 28,146
    11-28-2006, 02:04 PM Go to last post
    • Replies: 11
    • Views: 28,029
    11-11-2009, 07:08 PM Go to last post
  39. Chiller tonnage formula

    Started by fixerup, 04-04-2006 08:57 PM
    • Replies: 12
    • Views: 27,898
    04-08-2006, 09:04 AM Go to last post
  40. Mitsubishi City Multi

    Started by ajpackman, 03-07-2006 03:40 PM
    4 Pages
    1 2 3 4
    • Replies: 48
    • Views: 27,863
    04-27-2011, 07:54 PM Go to last post
  41. Frown munchkin trouble

    Started by bchh, 12-17-2006 01:10 PM
    4 Pages
    1 2 3 4
    • Replies: 48
    • Views: 27,092
    04-28-2010, 11:24 PM Go to last post
  42. Question TurboCore

    Started by seawolf 1, 03-14-2006 09:01 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 87
    • Views: 26,489
    02-24-2008, 01:43 PM Go to last post
  43. Digital/Online Ductulator

    Started by marauderx, 06-26-2007 01:08 PM
    • Replies: 8
    • Views: 26,275
    12-30-2009, 02:20 AM Go to last post
  44. Chiller cooling output calculation in KW

    Started by danish, 06-28-2009 07:02 AM
    • Replies: 9
    • Views: 25,906
    07-19-2009, 03:17 AM Go to last post
  45. Rule of thumb for CFM?

    Started by sonc, 08-15-2004 05:32 PM
    • Replies: 10
    • Views: 25,590
    08-17-2004, 06:48 AM Go to last post
  46. Smile Turbocor Problems

    Started by turbo geek, 10-21-2006 09:38 PM
    3 Pages
    1 2 3
    • Replies: 26
    • Views: 25,119
    06-26-2013, 05:15 PM Go to last post
  47. Carrier ComfortLink Alarm Codes

    Started by crowelle, 08-27-2004 03:42 PM
    • Replies: 8
    • Views: 25,103
    01-29-2007, 11:47 AM Go to last post
  48. Single phase condenser motor running backwards

    Started by killer v, 07-22-2011 10:46 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 25,077
    07-28-2011, 08:56 PM Go to last post
  49. Trane CVHE Teardown Manual

    Started by nh3engineer, 04-16-2008 04:57 AM
    5 Pages
    1 2 3 4 5
    • Replies: 57
    • Views: 24,632
    07-26-2008, 12:44 AM Go to last post

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