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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: 5,637
    10-31-2011, 07:41 PM Go to last post
    • Replies: 0
    • Views: 4,790
    10-31-2011, 07:37 PM Go to last post
  1. Normal Thread Normal Threads

  2. Confused Aaon 4 Ton No sub cool

    Started by Nowareazy, 08-09-2010 11:11 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 1,865
    08-14-2010, 12:00 AM Go to last post
  3. trane 40 ton rooftop static pressure problem

    Started by hvac17011, 08-12-2010 02:34 PM
    • Replies: 4
    • Views: 1,034
    08-13-2010, 03:51 AM Go to last post
  4. 10 ton rtu freezing up

    Started by hevychevyjeff, 08-12-2010 10:58 PM
    • Replies: 0
    • Views: 673
    08-12-2010, 10:58 PM Go to last post
  5. Carrier still selling PTACs?

    Started by BaldLoonie, 08-09-2010 06:07 PM
    • Replies: 2
    • Views: 663
    08-12-2010, 07:56 PM Go to last post
  6. Carrier line set question Puron

    Started by caddy, 08-09-2010 10:41 PM
    • Replies: 4
    • Views: 808
    08-12-2010, 06:28 PM Go to last post
  7. need help to determine tonnage on a RUDD

    Started by meoff, 08-06-2010 07:32 PM
    • Replies: 5
    • Views: 913
    08-12-2010, 03:11 PM Go to last post
  8. BTUH/CFM calculation disconnect?

    Started by Kuldeep24, 06-27-2010 11:43 PM
    • Replies: 4
    • Views: 4,382
    08-12-2010, 07:20 AM Go to last post
  9. Indoor Gun Ranges

    Started by justplainredd, 03-24-2010 04:08 PM
    • Replies: 9
    • Views: 3,378
    08-12-2010, 07:04 AM Go to last post
  10. Insulation location

    Started by nvr2old, 07-29-2010 12:32 PM
    • Replies: 1
    • Views: 514
    08-12-2010, 06:42 AM Go to last post
  11. Exclamation carrier 15ton split 6D compressor

    Started by carman, 08-06-2010 09:29 PM
    • Replies: 7
    • Views: 1,735
    08-11-2010, 10:14 PM Go to last post
  12. Mitsubishi Heat recorery systems

    Started by Catpower, 08-11-2010 03:16 PM
    • Replies: 1
    • Views: 481
    08-11-2010, 10:10 PM Go to last post
  13. Trane Precedent TSC120 Evap/Orifice Restriction?

    Started by lihvac54, 08-05-2010 06:27 PM
    • Replies: 6
    • Views: 2,599
    08-11-2010, 09:27 PM Go to last post
  14. Anybody working "in-house" for the hi-rise building?

    Started by sigma, 08-11-2010 07:40 PM
    • Replies: 1
    • Views: 451
    08-11-2010, 08:55 PM Go to last post
  15. fan belt

    Started by nvr2old, 07-26-2010 08:05 AM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 4,992
    08-11-2010, 06:03 PM Go to last post
  16. Post equation

    Started by hyder_khan74, 02-04-2007 04:10 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 3,366
    08-11-2010, 04:38 PM Go to last post
  17. Trane Rooftop troubleshooting

    Started by braveheart51, 08-06-2010 11:53 AM
    • Replies: 7
    • Views: 2,844
    08-10-2010, 09:37 PM Go to last post
  18. Carrier 48PD Digital Scroll VFD Rooftop Units

    Started by larrydfw, 08-10-2010 11:09 AM
    • Replies: 3
    • Views: 1,130
    08-10-2010, 05:56 PM Go to last post
  19. Register with changable filter?

    Started by mdm0001, 07-28-2010 10:04 AM
    • Replies: 2
    • Views: 535
    08-10-2010, 11:09 AM Go to last post
  20. Question on district cooling

    Started by rootserv, 08-10-2010 04:16 AM
    • Replies: 1
    • Views: 484
    08-10-2010, 10:19 AM Go to last post
  21. Air Cooled radiators anyone hear about it

    Started by rootserv, 08-10-2010 04:12 AM
    • Replies: 0
    • Views: 414
    08-10-2010, 04:12 AM Go to last post
  22. Capacitor Epidemic

    Started by chiller mekanik, 08-07-2010 02:37 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 1,819
    08-09-2010, 11:43 PM Go to last post
  23. Question Exhaust Fan Damper Interlock Control Question

    Started by mamcdoug, 08-05-2010 02:02 PM
    • Replies: 12
    • Views: 8,982
    08-09-2010, 10:28 PM Go to last post
  24. Raypak MVB boiler Problems

    Started by sfreshvac, 08-09-2010 04:37 PM
    • Replies: 0
    • Views: 2,070
    08-09-2010, 04:37 PM Go to last post
  25. Low delta T

    Started by FLASH7, 04-19-2008 11:52 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 6,016
    08-09-2010, 12:23 PM Go to last post
  26. Aaon RN 7.5 ton RTU with VFD

    Started by larrydfw, 08-06-2010 05:52 PM
    • Replies: 5
    • Views: 1,829
    08-09-2010, 12:10 PM Go to last post
  27. super high pressure on rooftop unit

    Started by jay729, 08-02-2010 03:42 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,012
    08-08-2010, 04:24 PM Go to last post
  28. Recommended air flow through a chilled water coil?

    Started by normnet, 08-06-2010 12:43 AM
    2 Pages
    1 2
    • Replies: 25
    • Views: 2,695
    08-08-2010, 02:11 PM Go to last post
  29. York schematics

    Started by aprophet, 08-08-2010 02:10 PM
    • Replies: 0
    • Views: 857
    08-08-2010, 02:10 PM Go to last post
  30. Carrier dual fan condenser problem

    Started by leslie cook, 08-05-2010 06:54 AM
    • Replies: 12
    • Views: 1,303
    08-08-2010, 08:16 AM Go to last post
  31. how much pressures??

    Started by noypiEVO, 08-05-2010 10:39 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 1,133
    08-07-2010, 10:02 PM Go to last post
  32. COPELAND HIGH PRESSURE SWITCH

    Started by supertek65, 08-07-2010 04:03 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,809
    08-07-2010, 09:18 PM Go to last post
  33. Trane reliatel static pressure transducers

    Started by mechmike2, 07-16-2010 08:42 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 4,783
    08-07-2010, 06:49 PM Go to last post
  34. Dehumidify with no reheat????

    Started by moshmont, 07-28-2010 07:01 AM
    • Replies: 10
    • Views: 1,453
    08-06-2010, 11:16 PM Go to last post
  35. Need info for Lennox.

    Started by Atticmonkey777, 07-26-2010 01:15 PM
    • Replies: 8
    • Views: 2,446
    08-06-2010, 05:47 PM Go to last post
  36. Coenco System

    Started by Fabrk8r, 08-06-2010 11:30 AM
    • Replies: 0
    • Views: 608
    08-06-2010, 11:30 AM Go to last post
  37. Circuit setters for wshp

    Started by Air flow man, 07-30-2010 12:14 AM
    • Replies: 7
    • Views: 1,666
    08-06-2010, 01:31 AM Go to last post
  38. Carrier 3V issue

    Started by mechmike2, 08-05-2010 08:41 PM
    • Replies: 0
    • Views: 699
    08-05-2010, 08:41 PM Go to last post
  39. High Humidity - need advice

    Started by dschultz307, 08-04-2010 03:05 PM
    • Replies: 10
    • Views: 1,302
    08-05-2010, 08:04 PM Go to last post
  40. Phase protection relay

    Started by Randy S., 08-02-2010 10:41 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 2,493
    08-05-2010, 07:56 PM Go to last post
  41. Hmm Carrier 48z

    Started by milehightech, 08-04-2010 12:41 PM
    • Replies: 1
    • Views: 597
    08-04-2010, 10:48 PM Go to last post
  42. Condensor fans run backwards

    Started by iahvac, 08-02-2010 02:32 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,990
    08-04-2010, 10:11 PM Go to last post
  43. Trane Mseries climate changer

    Started by floridaactecdj, 08-03-2010 10:08 PM
    • Replies: 2
    • Views: 822
    08-04-2010, 09:30 PM Go to last post
  44. Multi condenser system?

    Started by neena2, 08-03-2010 11:19 AM
    • Replies: 12
    • Views: 976
    08-04-2010, 08:32 PM Go to last post
    • Replies: 3
    • Views: 1,918
    08-04-2010, 03:41 PM Go to last post
  45. Unloader Question

    Started by noload, 08-03-2010 07:06 PM
    • Replies: 4
    • Views: 655
    08-04-2010, 03:35 PM Go to last post
  46. Liskey-Aire DA-15/ DA-20

    Started by zyexx, 08-04-2010 10:36 AM
    • Replies: 0
    • Views: 1,096
    08-04-2010, 10:36 AM Go to last post
  47. Tracer adaptaview

    Started by Koluib, 07-22-2010 09:44 AM
    • Replies: 9
    • Views: 1,205
    08-03-2010, 06:34 PM Go to last post
  48. chilled water ahu problem

    Started by cosmoa4, 07-21-2010 09:51 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 2,200
    08-03-2010, 09:45 AM Go to last post
  49. checking for noncondensables

    Started by newbe0507, 07-31-2010 07:33 PM
    • Replies: 11
    • Views: 2,889
    08-03-2010, 07:43 AM Go to last post
  50. HGBP valve sizing

    Started by ascj, 07-30-2010 06:01 PM
    • Replies: 6
    • Views: 1,249
    08-02-2010, 09:06 PM Go to last post

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