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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: 11,912
    10-31-2011, 07:41 PM Go to last post
    • Replies: 0
    • Views: 10,281
    10-31-2011, 07:37 PM Go to last post
  1. Normal Thread Normal Threads

  2. HVAC plant management

    Started by MaintMgr, 04-18-2018 07:50 PM
    • Replies: 6
    • Views: 224
    Today, 07:24 AM Go to last post
    • Replies: 2
    • Views: 186
    Yesterday, 07:58 PM Go to last post
  3. York Tropical RTU 50Hz Freeze Up Issue

    Started by Hadi Had, 04-14-2018 12:55 AM
    • Replies: 4
    • Views: 239
    Yesterday, 07:41 PM Go to last post
  4. carrier 30XA402 chiller

    Started by HichamBen, 04-18-2018 03:49 AM
    • Replies: 0
    • Views: 127
    04-18-2018, 03:49 AM Go to last post
    • Replies: 4
    • Views: 251
    04-14-2018, 07:20 PM Go to last post
  5. Carrier FIOP codes

    Started by klb311, 03-13-2018 11:24 AM
    • Replies: 5
    • Views: 364
    04-12-2018, 11:58 AM Go to last post
  6. FDECU

    Started by Seabee44, 04-11-2018 02:55 PM
    • Replies: 12
    • Views: 360
    04-12-2018, 04:49 AM Go to last post
  7. Pole Shed Heating, Cooling, and Air Exchange

    Started by bschultz, 04-10-2018 01:36 AM
    air exchanger, cooling, exhaust fans, geothermal, heat exchangers, heating, radiant hydronic in-floor pex heat
    • Replies: 3
    • Views: 216
    04-11-2018, 09:33 AM Go to last post
  8. Help Identifying Part

    Started by sammyb123, 04-08-2018 01:13 PM
    • Replies: 6
    • Views: 309
    04-10-2018, 10:03 PM Go to last post
  9. Danfoss Turbocor reliability

    Started by AmericanLoco, 04-10-2018 09:08 PM
    • Replies: 1
    • Views: 182
    04-10-2018, 09:37 PM Go to last post
  10. decoupler control

    Started by Eng Ali, 03-08-2018 07:03 AM
    hvac, hvac calculators, hvac design manual
    • Replies: 3
    • Views: 420
    04-10-2018, 11:03 AM Go to last post
  11. Calculation of duct an exhaust fan power

    Started by ouchen108, 03-27-2018 05:47 PM
    • Replies: 3
    • Views: 383
    04-07-2018, 07:07 AM Go to last post
  12. Confused 3 PH 2 Speed only runs backwards

    Started by JunoDog, 04-05-2018 03:12 PM
    • Replies: 2
    • Views: 289
    04-06-2018, 07:31 AM Go to last post
    • Replies: 2
    • Views: 256
    04-04-2018, 05:36 PM Go to last post
    • Replies: 2
    • Views: 352
    04-02-2018, 10:58 PM Go to last post
  13. TUTCO DB20087-2-1P heating element

    Started by valvashon, 03-20-2018 02:40 PM
    • Replies: 1
    • Views: 399
    04-02-2018, 03:06 PM Go to last post
  14. Smile Grooving Schedule 80 Steel Pipe

    Started by HVACGUY01, 03-29-2018 08:58 AM
    • Replies: 3
    • Views: 492
    04-02-2018, 10:53 AM Go to last post
  15. Question Widespread Formicary Corrosion Causes?

    Started by GROQ, 03-26-2018 12:01 PM
    formicary corrosion articles, variable refrigerant flow, variable refrigerant volume
    • Replies: 9
    • Views: 407
    03-26-2018, 04:12 PM Go to last post
  16. Working Issue!!

    Started by Marvin S. Migue, 03-24-2018 03:59 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 864
    03-26-2018, 05:25 AM Go to last post
    • Replies: 1
    • Views: 427
    03-23-2018, 10:29 PM Go to last post
  17. Sullair air dryer pressure switches open

    Started by LarryWDH, 03-21-2018 12:10 PM
    • Replies: 8
    • Views: 421
    03-22-2018, 09:49 AM Go to last post
    • Replies: 0
    • Views: 326
    03-20-2018, 12:56 AM Go to last post
  18. Trane Self Contained Units

    Started by drfenton, 03-17-2018 11:33 AM
    • Replies: 1
    • Views: 421
    03-17-2018, 11:46 AM Go to last post
  19. Trane Chiller Model & Serial Number Assistance

    Started by drfenton, 03-14-2018 07:49 PM
    • Replies: 3
    • Views: 474
    03-14-2018, 11:41 PM Go to last post
    • Replies: 1
    • Views: 390
    03-10-2018, 06:44 PM Go to last post
  20. ball valve extension

    Started by uffdanow00, 03-07-2018 06:19 PM
    • Replies: 5
    • Views: 489
    03-09-2018, 09:45 AM Go to last post
  21. Preventive Maintenance Schedule for HVAC

    Started by badran28, 03-07-2018 11:24 AM
    maintenance, schedule
    • Replies: 2
    • Views: 419
    03-07-2018, 01:10 PM Go to last post
    • Replies: 0
    • Views: 313
    03-07-2018, 04:56 AM Go to last post
    • Replies: 2
    • Views: 365
    03-06-2018, 04:08 PM Go to last post
  22. Weird symptoms

    Started by icehot3006, 03-04-2018 10:43 PM
    • Replies: 1
    • Views: 376
    03-05-2018, 04:29 PM Go to last post
  23. Steam heat question - for my education, not repair

    Started by amd, 03-02-2018 12:50 AM
    • Replies: 10
    • Views: 552
    03-05-2018, 02:37 PM Go to last post
  24. Unit replacement sizing question

    Started by Tekjunkie, 03-01-2018 11:31 AM
    2 Pages
    1 2
    • Replies: 23
    • Views: 654
    03-05-2018, 10:20 AM Go to last post
    • Replies: 5
    • Views: 445
    03-02-2018, 07:53 AM Go to last post
  25. Variable frequency drive

    Started by Muieez, 06-23-2017 08:12 PM
    • Replies: 0
    • Views: 214
    06-23-2017, 08:12 PM Go to last post
    • Replies: 1
    • Views: 202
    06-23-2017, 12:51 PM Go to last post
  26. Thumbs up Wireless Stand Alone System

    Started by cronin44, 06-22-2017 10:42 AM
    • Replies: 0
    • Views: 238
    06-22-2017, 10:42 AM Go to last post
  27. Earthwise Purge Questions

    Started by LotToLearn, 06-20-2017 08:09 AM
    • Replies: 3
    • Views: 391
    06-22-2017, 08:53 AM Go to last post
    • Replies: 1
    • Views: 309
    06-21-2017, 08:18 PM Go to last post
  28. NPU Airflow testing

    Started by Adrian Sadler, 06-20-2017 04:39 PM
    • Replies: 0
    • Views: 132
    06-20-2017, 04:39 PM Go to last post
  29. Duct sizing

    Started by avetsch, 06-19-2017 05:47 PM
    • Replies: 2
    • Views: 369
    06-19-2017, 06:19 PM Go to last post
  30. RUUD commercial Unit- Tonnage?

    Started by ibuildme, 06-19-2017 10:40 AM
    • Replies: 1
    • Views: 260
    06-19-2017, 11:38 AM Go to last post
  31. help for Cafeteria A/C

    Started by felkahlout, 06-12-2017 10:07 AM
    • Replies: 4
    • Views: 525
    06-18-2017, 05:32 AM Go to last post
  32. Relative Costs for unitary 5-Ton RTU

    Started by Maroons, 06-16-2017 05:20 PM
    • Replies: 3
    • Views: 408
    06-17-2017, 09:41 PM Go to last post
  33. Thawzone

    Started by Robert George, 06-17-2017 01:59 PM
    • Replies: 0
    • Views: 283
    06-17-2017, 01:59 PM Go to last post
  34. Question HVAC alerts

    Started by Tanishq Walia, 06-17-2017 06:46 AM
    hvac controls, hvac design manual, hvac electrical troubleshooting
    • Replies: 0
    • Views: 291
    06-17-2017, 06:46 AM Go to last post
  35. Moved: Trane Cgam

    Started by Milliamp, 06-18-2017 10:29 AM
    •  
    •  
  36. 2 circuits r22 rooftop superheat

    Started by ksaz, 06-14-2017 04:14 PM
    • Replies: 1
    • Views: 384
    06-15-2017, 07:10 AM Go to last post
    • Replies: 7
    • Views: 725
    06-14-2017, 11:18 AM Go to last post
  37. Freezer issues

    Started by hvacron, 06-10-2017 10:27 PM
    • Replies: 7
    • Views: 573
    06-11-2017, 11:25 AM Go to last post

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