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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: 8,545
    10-31-2011, 07:41 PM Go to last post
    • Replies: 0
    • Views: 7,379
    10-31-2011, 07:37 PM Go to last post
  1. Normal Thread Normal Threads

  2. Trane RTU not keeping up.

    Started by hevychevyjeff, 08-12-2010 08:58 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 1,947
    08-18-2010, 02:05 AM Go to last post
  3. Venstar t'stats

    Started by JWB, 08-17-2010 08:27 PM
    • Replies: 0
    • Views: 808
    08-17-2010, 08:27 PM Go to last post
  4. PTC Heater Size

    Started by jurban10, 08-17-2010 09:38 AM
    • Replies: 0
    • Views: 513
    08-17-2010, 09:38 AM Go to last post
  5. drive no likey power outage !

    Started by mesahvac, 08-13-2010 01:44 AM
    • Replies: 6
    • Views: 991
    08-17-2010, 07:52 AM Go to last post
  6. climatemaster wshp keeps shutting off

    Started by Free wheel, 07-13-2010 10:37 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,801
    08-17-2010, 01:21 AM Go to last post
  7. Frown Sherman Stalker From Instrumetrix

    Started by JKD, 08-07-2010 01:15 PM
    • Replies: 6
    • Views: 1,214
    08-16-2010, 07:54 PM Go to last post
  8. Disconnecting Makeup Air unit from Exhaust hood

    Started by zeppy, 08-15-2010 09:49 PM
    • Replies: 5
    • Views: 1,728
    08-16-2010, 07:46 PM Go to last post
  9. Frown Sweating Ductwork

    Started by nuclear rabbit, 08-12-2010 10:12 AM
    • Replies: 8
    • Views: 2,157
    08-16-2010, 10:35 AM Go to last post
  10. Confused Blowing doors open

    Started by axe05, 08-09-2010 04:48 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 2,319
    08-16-2010, 10:32 AM Go to last post
  11. OLD BDP/CARRIER DRAIN PAN?

    Started by dave1234, 08-12-2010 11:00 PM
    • Replies: 2
    • Views: 1,022
    08-16-2010, 09:58 AM Go to last post
  12. Confused metasys dx9100

    Started by mccann, 08-09-2010 04:42 PM
    • Replies: 7
    • Views: 2,406
    08-16-2010, 07:52 AM Go to last post
  13. trane intellipac

    Started by jeepfrk9, 08-10-2010 09:42 PM
    • Replies: 12
    • Views: 1,827
    08-15-2010, 09:02 PM Go to last post
  14. High side fluttering on Keepright Rooftop A/C

    Started by carwel, 08-14-2010 11:08 PM
    • Replies: 5
    • Views: 2,047
    08-15-2010, 08:17 PM Go to last post
  15. Confused Cleaning dense vvap coils

    Started by mike1962, 08-14-2010 05:09 PM
    • Replies: 5
    • Views: 849
    08-15-2010, 07:43 PM Go to last post
  16. Purpose of the Winter Start Control

    Started by pnw_tech, 08-14-2010 02:39 PM
    • Replies: 9
    • Views: 1,761
    08-15-2010, 01:09 PM Go to last post
  17. Question RTWA Fault question

    Started by LightGuy48, 08-11-2010 12:22 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 2,563
    08-15-2010, 12:53 PM Go to last post
  18. ITP

    Started by hvacr, 08-14-2010 11:42 AM
    • Replies: 0
    • Views: 1,248
    08-14-2010, 11:42 AM Go to last post
  19. Confused Aaon 4 Ton No sub cool

    Started by Nowareazy, 08-09-2010 11:11 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 2,574
    08-14-2010, 12:00 AM Go to last post
  20. trane 40 ton rooftop static pressure problem

    Started by hvac17011, 08-12-2010 02:34 PM
    • Replies: 4
    • Views: 1,235
    08-13-2010, 03:51 AM Go to last post
  21. 10 ton rtu freezing up

    Started by hevychevyjeff, 08-12-2010 10:58 PM
    • Replies: 0
    • Views: 841
    08-12-2010, 10:58 PM Go to last post
  22. Carrier still selling PTACs?

    Started by BaldLoonie, 08-09-2010 06:07 PM
    • Replies: 2
    • Views: 785
    08-12-2010, 07:56 PM Go to last post
  23. Carrier line set question Puron

    Started by caddy, 08-09-2010 10:41 PM
    • Replies: 4
    • Views: 982
    08-12-2010, 06:28 PM Go to last post
  24. need help to determine tonnage on a RUDD

    Started by meoff, 08-06-2010 07:32 PM
    • Replies: 5
    • Views: 1,124
    08-12-2010, 03:11 PM Go to last post
  25. BTUH/CFM calculation disconnect?

    Started by Kuldeep24, 06-27-2010 11:43 PM
    • Replies: 4
    • Views: 4,795
    08-12-2010, 07:20 AM Go to last post
  26. Indoor Gun Ranges

    Started by justplainredd, 03-24-2010 04:08 PM
    • Replies: 9
    • Views: 4,034
    08-12-2010, 07:04 AM Go to last post
  27. Insulation location

    Started by nvr2old, 07-29-2010 12:32 PM
    • Replies: 1
    • Views: 614
    08-12-2010, 06:42 AM Go to last post
  28. Exclamation carrier 15ton split 6D compressor

    Started by carman, 08-06-2010 09:29 PM
    • Replies: 7
    • Views: 2,085
    08-11-2010, 10:14 PM Go to last post
  29. Mitsubishi Heat recorery systems

    Started by Catpower, 08-11-2010 03:16 PM
    • Replies: 1
    • Views: 574
    08-11-2010, 10:10 PM Go to last post
  30. Trane Precedent TSC120 Evap/Orifice Restriction?

    Started by lihvac54, 08-05-2010 06:27 PM
    • Replies: 6
    • Views: 3,022
    08-11-2010, 09:27 PM Go to last post
  31. Anybody working "in-house" for the hi-rise building?

    Started by sigma, 08-11-2010 07:40 PM
    • Replies: 1
    • Views: 525
    08-11-2010, 08:55 PM Go to last post
  32. fan belt

    Started by nvr2old, 07-26-2010 08:05 AM
    3 Pages
    1 2 3
    • Replies: 31
    • Views: 6,741
    08-11-2010, 06:03 PM Go to last post
  33. Post equation

    Started by hyder_khan74, 02-04-2007 04:10 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 3,954
    08-11-2010, 04:38 PM Go to last post
  34. Trane Rooftop troubleshooting

    Started by braveheart51, 08-06-2010 11:53 AM
    • Replies: 7
    • Views: 3,405
    08-10-2010, 09:37 PM Go to last post
  35. Carrier 48PD Digital Scroll VFD Rooftop Units

    Started by larrydfw, 08-10-2010 11:09 AM
    • Replies: 3
    • Views: 1,215
    08-10-2010, 05:56 PM Go to last post
  36. Register with changable filter?

    Started by mdm0001, 07-28-2010 10:04 AM
    • Replies: 2
    • Views: 637
    08-10-2010, 11:09 AM Go to last post
  37. Question on district cooling

    Started by rootserv, 08-10-2010 04:16 AM
    • Replies: 1
    • Views: 552
    08-10-2010, 10:19 AM Go to last post
  38. Air Cooled radiators anyone hear about it

    Started by rootserv, 08-10-2010 04:12 AM
    • Replies: 0
    • Views: 468
    08-10-2010, 04:12 AM Go to last post
  39. Capacitor Epidemic

    Started by chiller mekanik, 08-07-2010 02:37 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 2,217
    08-09-2010, 11:43 PM Go to last post
  40. Question Exhaust Fan Damper Interlock Control Question

    Started by mamcdoug, 08-05-2010 02:02 PM
    • Replies: 12
    • Views: 11,057
    08-09-2010, 10:28 PM Go to last post
  41. Raypak MVB boiler Problems

    Started by sfreshvac, 08-09-2010 04:37 PM
    • Replies: 0
    • Views: 2,301
    08-09-2010, 04:37 PM Go to last post
  42. Low delta T

    Started by FLASH7, 04-19-2008 11:52 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 7,070
    08-09-2010, 12:23 PM Go to last post
  43. Aaon RN 7.5 ton RTU with VFD

    Started by larrydfw, 08-06-2010 05:52 PM
    • Replies: 5
    • Views: 2,193
    08-09-2010, 12:10 PM Go to last post
  44. super high pressure on rooftop unit

    Started by jay729, 08-02-2010 03:42 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,369
    08-08-2010, 04:24 PM Go to last post
  45. Recommended air flow through a chilled water coil?

    Started by normnet, 08-06-2010 12:43 AM
    2 Pages
    1 2
    • Replies: 25
    • Views: 3,606
    08-08-2010, 02:11 PM Go to last post
  46. York schematics

    Started by aprophet, 08-08-2010 02:10 PM
    • Replies: 0
    • Views: 956
    08-08-2010, 02:10 PM Go to last post
  47. Carrier dual fan condenser problem

    Started by leslie cook, 08-05-2010 06:54 AM
    • Replies: 12
    • Views: 1,514
    08-08-2010, 08:16 AM Go to last post
  48. how much pressures??

    Started by noypiEVO, 08-05-2010 10:39 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 1,490
    08-07-2010, 10:02 PM Go to last post
  49. COPELAND HIGH PRESSURE SWITCH

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

    Started by mechmike2, 07-16-2010 08:42 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 6,034
    08-07-2010, 06:49 PM Go to last post
  51. Dehumidify with no reheat????

    Started by moshmont, 07-28-2010 07:01 AM
    • Replies: 10
    • Views: 1,794
    08-06-2010, 11:16 PM Go to last post

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