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Forum: AOP Commercial HVAC

FOR EQUIPMENT OWNERS ONLY Questions and discussions regarding Commercial Buildings

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

    Started by Dad, 10-31-2011 07:41 PM
    • Replies: 0
    • Views: 3,753
    10-31-2011, 07:41 PM Go to last post
  2. Sticky Thread Sticky: A must read for all members...Who can reply to the AOP area

    Started by Dad, 10-31-2011 07:37 PM
    • Replies: 0
    • Views: 3,087
    10-31-2011, 07:37 PM Go to last post
  1. High side fluttering on Keepright Rooftop A/C

    Started by carwel, 08-14-2010 11:08 PM
    • Replies: 5
    • Views: 1,306
    08-15-2010, 08:17 PM Go to last post
  2. Confused Cleaning dense vvap coils

    Started by mike1962, 08-14-2010 05:09 PM
    • Replies: 5
    • Views: 522
    08-15-2010, 07:43 PM Go to last post
  3. Purpose of the Winter Start Control

    Started by pnw_tech, 08-14-2010 02:39 PM
    • Replies: 9
    • Views: 986
    08-15-2010, 01:09 PM Go to last post
  4. Question RTWA Fault question

    Started by LightGuy48, 08-11-2010 12:22 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 1,372
    08-15-2010, 12:53 PM Go to last post
  5. ITP

    Started by hvacr, 08-14-2010 11:42 AM
    • Replies: 0
    • Views: 717
    08-14-2010, 11:42 AM Go to last post
  6. Confused Aaon 4 Ton No sub cool

    Started by Nowareazy, 08-09-2010 11:11 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 1,367
    08-14-2010, 12:00 AM Go to last post
  7. trane 40 ton rooftop static pressure problem

    Started by hvac17011, 08-12-2010 02:34 PM
    • Replies: 4
    • Views: 797
    08-13-2010, 03:51 AM Go to last post
  8. 10 ton rtu freezing up

    Started by hevychevyjeff, 08-12-2010 10:58 PM
    • Replies: 0
    • Views: 507
    08-12-2010, 10:58 PM Go to last post
  9. Carrier still selling PTACs?

    Started by BaldLoonie, 08-09-2010 06:07 PM
    • Replies: 2
    • Views: 527
    08-12-2010, 07:56 PM Go to last post
  10. Carrier line set question Puron

    Started by caddy, 08-09-2010 10:41 PM
    • Replies: 4
    • Views: 597
    08-12-2010, 06:28 PM Go to last post
  11. need help to determine tonnage on a RUDD

    Started by meoff, 08-06-2010 07:32 PM
    • Replies: 5
    • Views: 649
    08-12-2010, 03:11 PM Go to last post
  12. BTUH/CFM calculation disconnect?

    Started by Kuldeep24, 06-27-2010 11:43 PM
    • Replies: 4
    • Views: 3,390
    08-12-2010, 07:20 AM Go to last post
  13. Indoor Gun Ranges

    Started by justplainredd, 03-24-2010 04:08 PM
    • Replies: 9
    • Views: 2,645
    08-12-2010, 07:04 AM Go to last post
  14. Insulation location

    Started by nvr2old, 07-29-2010 12:32 PM
    • Replies: 1
    • Views: 381
    08-12-2010, 06:42 AM Go to last post
  15. Exclamation carrier 15ton split 6D compressor

    Started by carman, 08-06-2010 09:29 PM
    • Replies: 7
    • Views: 1,411
    08-11-2010, 10:14 PM Go to last post
  16. Mitsubishi Heat recorery systems

    Started by Catpower, 08-11-2010 03:16 PM
    • Replies: 1
    • Views: 381
    08-11-2010, 10:10 PM Go to last post
  17. Trane Precedent TSC120 Evap/Orifice Restriction?

    Started by lihvac54, 08-05-2010 06:27 PM
    • Replies: 6
    • Views: 2,099
    08-11-2010, 09:27 PM Go to last post
  18. Anybody working "in-house" for the hi-rise building?

    Started by sigma, 08-11-2010 07:40 PM
    • Replies: 1
    • Views: 359
    08-11-2010, 08:55 PM Go to last post
  19. fan belt

    Started by nvr2old, 07-26-2010 08:05 AM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 3,415
    08-11-2010, 06:03 PM Go to last post
  20. Post equation

    Started by hyder_khan74, 02-04-2007 03:10 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 2,727
    08-11-2010, 04:38 PM Go to last post
  21. Trane Rooftop troubleshooting

    Started by braveheart51, 08-06-2010 11:53 AM
    • Replies: 7
    • Views: 2,243
    08-10-2010, 09:37 PM Go to last post
  22. Carrier 48PD Digital Scroll VFD Rooftop Units

    Started by larrydfw, 08-10-2010 11:09 AM
    • Replies: 3
    • Views: 961
    08-10-2010, 05:56 PM Go to last post
  23. Register with changable filter?

    Started by mdm0001, 07-28-2010 10:04 AM
    • Replies: 2
    • Views: 422
    08-10-2010, 11:09 AM Go to last post
  24. Question on district cooling

    Started by rootserv, 08-10-2010 04:16 AM
    • Replies: 1
    • Views: 400
    08-10-2010, 10:19 AM Go to last post
  25. Air Cooled radiators anyone hear about it

    Started by rootserv, 08-10-2010 04:12 AM
    • Replies: 0
    • Views: 326
    08-10-2010, 04:12 AM Go to last post
  26. Capacitor Epidemic

    Started by chiller mekanik, 08-07-2010 02:37 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 1,420
    08-09-2010, 11:43 PM Go to last post
  27. Question Exhaust Fan Damper Interlock Control Question

    Started by mamcdoug, 08-05-2010 02:02 PM
    • Replies: 12
    • Views: 6,115
    08-09-2010, 10:28 PM Go to last post
  28. Raypak MVB boiler Problems

    Started by sfreshvac, 08-09-2010 04:37 PM
    • Replies: 0
    • Views: 1,658
    08-09-2010, 04:37 PM Go to last post
  29. Low delta T

    Started by FLASH7, 04-19-2008 11:52 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 4,676
    08-09-2010, 12:23 PM Go to last post
  30. Aaon RN 7.5 ton RTU with VFD

    Started by larrydfw, 08-06-2010 05:52 PM
    • Replies: 5
    • Views: 1,462
    08-09-2010, 12:10 PM Go to last post
  31. super high pressure on rooftop unit

    Started by jay729, 08-02-2010 03:42 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 1,391
    08-08-2010, 04:24 PM Go to last post
  32. Recommended air flow through a chilled water coil?

    Started by normnet, 08-06-2010 12:43 AM
    2 Pages
    1 2
    • Replies: 25
    • Views: 1,922
    08-08-2010, 02:11 PM Go to last post
  33. York schematics

    Started by aprophet, 08-08-2010 02:10 PM
    • Replies: 0
    • Views: 655
    08-08-2010, 02:10 PM Go to last post
  34. Carrier dual fan condenser problem

    Started by leslie cook, 08-05-2010 06:54 AM
    • Replies: 12
    • Views: 982
    08-08-2010, 08:16 AM Go to last post
  35. how much pressures??

    Started by noypiEVO, 08-05-2010 10:39 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 843
    08-07-2010, 10:02 PM Go to last post
  36. COPELAND HIGH PRESSURE SWITCH

    Started by supertek65, 08-07-2010 04:03 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,236
    08-07-2010, 09:18 PM Go to last post
  37. Trane reliatel static pressure transducers

    Started by mechmike2, 07-16-2010 08:42 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 3,576
    08-07-2010, 06:49 PM Go to last post
  38. Dehumidify with no reheat????

    Started by moshmont, 07-28-2010 07:01 AM
    • Replies: 10
    • Views: 1,091
    08-06-2010, 11:16 PM Go to last post
  39. Need info for Lennox.

    Started by Atticmonkey777, 07-26-2010 01:15 PM
    • Replies: 8
    • Views: 1,901
    08-06-2010, 05:47 PM Go to last post
  40. Coenco System

    Started by Fabrk8r, 08-06-2010 11:30 AM
    • Replies: 0
    • Views: 437
    08-06-2010, 11:30 AM Go to last post
  41. Circuit setters for wshp

    Started by Air flow man, 07-30-2010 12:14 AM
    • Replies: 7
    • Views: 1,257
    08-06-2010, 01:31 AM Go to last post
  42. Carrier 3V issue

    Started by mechmike2, 08-05-2010 08:41 PM
    • Replies: 0
    • Views: 545
    08-05-2010, 08:41 PM Go to last post
  43. High Humidity - need advice

    Started by dschultz307, 08-04-2010 03:05 PM
    • Replies: 10
    • Views: 999
    08-05-2010, 08:04 PM Go to last post
  44. Phase protection relay

    Started by Randy S., 08-02-2010 10:41 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 1,767
    08-05-2010, 07:56 PM Go to last post
  45. Hmm Carrier 48z

    Started by milehightech, 08-04-2010 12:41 PM
    • Replies: 1
    • Views: 412
    08-04-2010, 10:48 PM Go to last post
  46. Condensor fans run backwards

    Started by iahvac, 08-02-2010 02:32 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,462
    08-04-2010, 10:11 PM Go to last post
  47. Trane Mseries climate changer

    Started by floridaactecdj, 08-03-2010 10:08 PM
    • Replies: 2
    • Views: 602
    08-04-2010, 09:30 PM Go to last post
  48. Multi condenser system?

    Started by neena2, 08-03-2010 11:19 AM
    • Replies: 12
    • Views: 647
    08-04-2010, 08:32 PM Go to last post
    • Replies: 3
    • Views: 1,565
    08-04-2010, 03:41 PM Go to last post
  49. Unloader Question

    Started by noload, 08-03-2010 07:06 PM
    • Replies: 4
    • Views: 509
    08-04-2010, 03:35 PM Go to last post

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