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Forum: Tech to Tech Chat - Commercial

FOR TECHNICAL CHAT BETWEEN INDUSTRY WORKERS ONLY. NO AOP OR DIY** This forum is for Technical Chat in the Commercial Industry and only within the limits of the Open area Rules concerning DIY. Any technical chat that goes too far will be removed or moved to the Pro Area.

  1. Sticky Thread Sticky Threads

  2. Sticky Thread NO AOP posts here please. ONLY Tech to Tech chatter

    Started by Dad, 08-10-2011 04:34 PM
    • Replies: 0
    • Views: 10,998
    08-10-2011, 04:34 PM Go to last post
  1. Normal Thread Normal Threads

  2. Switching motor speeds with relay

    Started by Oodly, 03-30-2018 07:40 PM
    • Replies: 10
    • Views: 655
    04-01-2018, 03:35 PM Go to last post
  3. Bluon TdX 20 Refrigerant....

    Started by ems4ty, 10-17-2012 10:55 PM
    6 Pages
    1 2 3 4 5 6
    • Replies: 76
    • Views: 22,537
    03-31-2018, 08:13 AM Go to last post
  4. New energy standards

    Started by Bglenn525, 03-28-2018 06:43 PM
    • Replies: 1
    • Views: 369
    03-28-2018, 08:52 PM Go to last post
  5. Trane CRHM150 shaking

    Started by Wallywimple, 03-27-2018 01:33 PM
    • Replies: 4
    • Views: 449
    03-27-2018, 06:06 PM Go to last post
  6. Air rotation unit motor problem

    Started by hvac17011, 03-21-2018 06:50 PM
    • Replies: 11
    • Views: 617
    03-27-2018, 06:04 PM Go to last post
  7. Water cooled vs air cooled chillers

    Started by canadianenginer, 03-26-2018 06:20 PM
    • Replies: 6
    • Views: 477
    03-27-2018, 10:43 AM Go to last post
  8. Major VRF brands in Canada

    Started by canadianenginer, 03-26-2018 06:24 PM
    • Replies: 1
    • Views: 276
    03-27-2018, 09:38 AM Go to last post
    • Replies: 7
    • Views: 1,041
    03-27-2018, 12:04 AM Go to last post
    • Replies: 0
    • Views: 330
    03-26-2018, 06:33 PM Go to last post
  9. Psychrometric chart software

    Started by canadianenginer, 03-26-2018 06:32 PM
    • Replies: 0
    • Views: 301
    03-26-2018, 06:32 PM Go to last post
    • Replies: 1
    • Views: 372
    03-26-2018, 12:53 PM Go to last post
  10. Hooking an alarm up to a condensate pump

    Started by ammoniadog, 03-08-2018 09:00 AM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,135
    03-26-2018, 08:17 AM Go to last post
  11. R134a in New R410a system?

    Started by Shard, 03-26-2018 03:30 AM
    • Replies: 3
    • Views: 571
    03-26-2018, 04:06 AM Go to last post
  12. Goodman gaspack

    Started by Jpnc3906, 03-05-2018 11:09 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 932
    03-25-2018, 01:56 PM Go to last post
  13. Mixing POE and Mineral OIL and Flushng.

    Started by norman78, 03-15-2018 02:44 AM
    2 Pages
    1 2
    • Replies: 20
    • Views: 1,239
    03-23-2018, 10:50 AM Go to last post
  14. EnerNet Control System

    Started by wre2000mw, 03-22-2018 04:09 PM
    • Replies: 1
    • Views: 311
    03-22-2018, 09:16 PM Go to last post
  15. Water source heatpump

    Started by Bglenn525, 03-12-2018 09:08 PM
    • Replies: 2
    • Views: 437
    03-22-2018, 02:43 PM Go to last post
  16. Trane rooftops mo99 retrofit

    Started by jackpiner, 06-16-2017 08:54 AM
    5 Pages
    1 2 3 4 5
    • Replies: 59
    • Views: 2,268
    03-22-2018, 10:15 AM Go to last post
  17. Retrofitting 100hp open drive system - Need some ideas

    Started by copperteeth, 03-16-2018 07:56 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 882
    03-21-2018, 07:42 AM Go to last post
  18. Bypassing Hi/Low pressure cut offs

    Started by hurtinhvac, 03-17-2012 02:19 PM
    3 Pages
    1 2 3
    • Replies: 29
    • Views: 18,317
    03-20-2018, 07:59 PM Go to last post
  19. aaon model and serial nomaclature

    Started by dbooker, 03-20-2018 06:12 AM
    • Replies: 2
    • Views: 403
    03-20-2018, 07:46 PM Go to last post
    • Replies: 0
    • Views: 279
    03-20-2018, 05:30 PM Go to last post
  20. old trane 50 ton controls and alarms

    Started by mccann, 03-15-2018 06:57 AM
    • Replies: 6
    • Views: 498
    03-20-2018, 04:04 PM Go to last post
  21. Trane ERTAA328 EXV replacement

    Started by faifai2001, 03-20-2018 02:54 AM
    • Replies: 2
    • Views: 332
    03-20-2018, 02:20 PM Go to last post
    • Replies: 24
    • Views: 721
    03-19-2018, 08:40 PM Go to last post
  22. Cooling Tower Basin

    Started by QazT, 03-15-2018 05:26 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 793
    03-19-2018, 04:07 PM Go to last post
  23. Confused ref supermarket E2 controller

    Started by markep, 03-18-2018 10:10 AM
    • Replies: 1
    • Views: 312
    03-18-2018, 05:29 PM Go to last post
  24. Compressor changeout on Trane HP

    Started by Raehvac, 03-12-2018 12:50 PM
    • Replies: 4
    • Views: 417
    03-17-2018, 07:42 PM Go to last post
  25. Zoomlock ?

    Started by DLR_LWT, 03-11-2018 03:04 PM
    • Replies: 4
    • Views: 578
    03-16-2018, 04:28 PM Go to last post
  26. New RTU drain trap?

    Started by drpsr99, 03-12-2018 12:53 PM
    • Replies: 6
    • Views: 494
    03-15-2018, 07:10 PM Go to last post
  27. Pulling permits?

    Started by Tekjunkie, 03-13-2018 01:56 PM
    • Replies: 8
    • Views: 451
    03-15-2018, 05:59 PM Go to last post
  28. Cleaver Brooks CBHAWK ICS

    Started by jman2794, 03-13-2018 02:53 PM
    • Replies: 0
    • Views: 236
    03-13-2018, 02:53 PM Go to last post
    • Replies: 31
    • Views: 8,900
    03-11-2018, 07:05 PM Go to last post
  29. oil pressure safety tripping copeland 6 cylinder compressor

    Started by Robber, 03-01-2018 10:10 AM
    2 Pages
    1 2
    • Replies: 21
    • Views: 915
    03-11-2018, 05:47 PM Go to last post
  30. Air Conditioner everything is running but not cooled.

    Started by Abhishekmishra, 03-11-2018 09:40 AM
    2 Pages
    1 2
    • Replies: 16
    • Views: 624
    03-11-2018, 02:06 PM Go to last post
  31. Convection Oven

    Started by Rockwell, 03-11-2018 11:19 AM
    • Replies: 2
    • Views: 267
    03-11-2018, 12:36 PM Go to last post
  32. Tilt Skillet

    Started by Rockwell, 03-03-2018 11:47 AM
    • Replies: 4
    • Views: 350
    03-11-2018, 11:16 AM Go to last post
  33. Fix high limit blowout on 20yo 1ton mcquay wshp

    Started by Raehvac, 03-09-2018 11:55 AM
    2 Pages
    1 2
    • Replies: 14
    • Views: 512
    03-11-2018, 07:32 AM Go to last post
  34. Receiver Subcooling (cont.)

    Started by hvacrmedic, 06-16-2017 10:12 PM
    10 Pages
    1 2 3 4 5 6 ... 10
    • Replies: 124
    • Views: 3,856
    03-09-2018, 09:06 PM Go to last post
  35. Copeland crankcase heater question

    Started by primmers, 03-09-2018 04:50 PM
    • Replies: 2
    • Views: 335
    03-09-2018, 05:39 PM Go to last post
    • Replies: 7
    • Views: 398
    03-08-2018, 05:54 PM Go to last post
  36. Duct Board Installation Question

    Started by Hombre427, 03-06-2018 07:55 PM
    • Replies: 6
    • Views: 442
    03-08-2018, 04:28 PM Go to last post
  37. Data aire thermostat

    Started by mrcool, 03-07-2018 12:00 PM
    • Replies: 1
    • Views: 267
    03-07-2018, 12:08 PM Go to last post
  38. G5 Appion

    Started by jimp, 05-20-2017 10:25 AM
    6 Pages
    1 2 3 4 5 6
    • Replies: 77
    • Views: 3,208
    03-06-2018, 02:11 AM Go to last post
  39. MO99 vs 427A

    Started by EMC mech., 04-06-2013 03:44 PM
    3 Pages
    1 2 3
    • Replies: 28
    • Views: 11,045
    03-06-2018, 02:03 AM Go to last post
  40. IT room equipment load calculations

    Started by Tomjd, 06-10-2017 12:54 PM
    • Replies: 7
    • Views: 610
    03-03-2018, 02:35 PM Go to last post
  41. What Happened to HVAC-Talk

    Started by hands, 03-01-2018 08:56 PM
    • Replies: 3
    • Views: 642
    03-03-2018, 12:39 AM Go to last post
  42. Unhappy Oil pump

    Started by vinhihere, 06-22-2017 10:49 PM
    • Replies: 8
    • Views: 519
    03-01-2018, 07:09 AM Go to last post
  43. Brazing copper to brass fitting

    Started by C4Trousers, 06-21-2017 12:53 AM
    • Replies: 5
    • Views: 907
    02-28-2018, 10:10 PM Go to last post
  44. Charging 404a as vapor

    Started by C4Trousers, 06-22-2017 11:20 PM
    • Replies: 3
    • Views: 522
    06-23-2017, 08:05 AM Go to last post

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