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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: 8,854
    08-10-2011, 04:34 PM Go to last post
  1. Normal Thread Normal Threads

  2. Internal Bypass TXV?

    Started by 02JeepKing, 05-30-2013 08:44 PM
    • Replies: 4
    • Views: 1,175
    05-30-2013, 09:28 PM Go to last post
  3. Lennox Gurus

    Started by 1-Hvacdoc, 08-20-2011 09:53 AM
    • Replies: 4
    • Views: 3,185
    08-20-2011, 09:58 PM Go to last post
    • Replies: 4
    • Views: 1,518
    05-15-2012, 06:59 PM Go to last post
  4. Rtu and digicools.

    Started by 11crv, 05-29-2014 08:34 PM
    • Replies: 7
    • Views: 985
    05-30-2014, 12:46 PM Go to last post
  5. systems with dual tx valves and check valves

    Started by 12gauge, 07-26-2013 04:07 AM
    • Replies: 1
    • Views: 686
    07-26-2013, 11:34 PM Go to last post
  6. Trane YCD240 gas valve operation

    Started by 1966Chevy2, 10-05-2014 05:28 PM
    • Replies: 8
    • Views: 1,545
    10-07-2014, 10:52 AM Go to last post
  7. DX dehum makeup air units

    Started by 19characterusername, 07-12-2012 10:38 PM
    • Replies: 5
    • Views: 1,457
    07-22-2012, 10:06 PM Go to last post
  8. Trane E Machine Rebuild Info requested

    Started by 1SikLBZ, 08-28-2013 10:25 PM
    • Replies: 4
    • Views: 1,053
    10-01-2013, 11:10 AM Go to last post
  9. Pneumatic Receiver Controller P541

    Started by 1SikLBZ, 01-12-2015 09:24 PM
    • Replies: 3
    • Views: 1,146
    01-13-2015, 05:21 PM Go to last post
  10. Carrier 50AK 50 Ton Unit

    Started by 1SikLBZ, 03-23-2015 09:55 PM
    • Replies: 7
    • Views: 1,278
    03-26-2015, 04:18 PM Go to last post
  11. Hmm Unloaders

    Started by 1tonn, 03-23-2012 08:44 PM
    • Replies: 3
    • Views: 1,306
    03-23-2012, 09:49 PM Go to last post
  12. Nu-Calgon Moisture Removal

    Started by 1tonn, 08-08-2013 11:54 AM
    • Replies: 5
    • Views: 1,078
    08-08-2013, 07:13 PM Go to last post
    • Replies: 12
    • Views: 1,868
    09-09-2013, 02:15 AM Go to last post
  13. What am I missing?

    Started by 280zx, 07-22-2015 09:06 PM
    3 Pages
    1 2 3
    • Replies: 38
    • Views: 5,451
    09-01-2015, 08:43 PM Go to last post
  14. I hate phantom voltage

    Started by 2sac, 12-09-2011 12:36 AM
    • Replies: 8
    • Views: 1,478
    12-10-2011, 09:45 AM Go to last post
  15. Oil in a gas line

    Started by 2sac, 01-05-2012 10:36 PM
    • Replies: 5
    • Views: 1,002
    01-23-2012, 08:52 PM Go to last post
  16. Need a manual and/or schematic for GE

    Started by 2sac, 01-16-2013 07:54 PM
    • Replies: 3
    • Views: 974
    01-18-2013, 02:22 AM Go to last post
  17. Confused Weil McLain GV-6 No HSI voltage

    Started by 2story, 09-09-2013 10:10 PM
    • Replies: 0
    • Views: 496
    09-09-2013, 10:10 PM Go to last post
  18. Trane Voyager, intermitant No Heat

    Started by 2wings, 12-31-2013 10:31 AM
    3 Pages
    1 2 3
    • Replies: 27
    • Views: 3,871
    01-03-2014, 05:23 PM Go to last post
  19. how do i tell when my vac pump is going bad?

    Started by 3800tom, 08-29-2011 01:37 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 3,344
    11-19-2011, 01:16 PM Go to last post
  20. Adjust an EPR w/o a pressure tap?

    Started by 3800tom, 09-01-2011 12:13 PM
    • Replies: 10
    • Views: 2,138
    02-25-2013, 10:15 PM Go to last post
  21. GPM for Airflow CCT-30 Glycol System?

    Started by 3gs, 08-14-2014 10:33 AM
    • Replies: 2
    • Views: 776
    08-21-2014, 12:04 PM Go to last post
  22. Lennox 51M42 Tstat not cycling poperly.

    Started by 3rdlaw, 03-17-2015 10:29 PM
    • Replies: 1
    • Views: 461
    03-17-2015, 10:42 PM Go to last post
  23. McQuay water source heat pump

    Started by 461pat, 11-03-2011 08:09 AM
    2 Pages
    1 2
    • Replies: 20
    • Views: 5,758
    03-02-2012, 10:02 PM Go to last post
  24. Mr. Slim Error code "EC" fix????

    Started by 4x4grey88, 09-19-2015 10:41 PM
    • Replies: 4
    • Views: 941
    09-20-2015, 08:29 AM Go to last post
  25. Confused Control Head on Variable Speed pumping systems?

    Started by 500GPMdT, 05-28-2013 02:05 PM
    • Replies: 9
    • Views: 1,882
    06-03-2013, 04:06 PM Go to last post
  26. WSHP & fluid cooler education

    Started by 500GPMdT, 07-01-2013 09:04 PM
    • Replies: 1
    • Views: 772
    07-02-2013, 10:23 AM Go to last post
  27. Trane Intellipak EF problem

    Started by 501miller, 03-15-2013 09:00 AM
    • Replies: 9
    • Views: 1,630
    04-02-2013, 12:45 AM Go to last post
  28. Daikin VRV's or Mitsubiski VRD

    Started by 50Panhead, 03-20-2013 04:29 PM
    • Replies: 0
    • Views: 730
    03-20-2013, 04:29 PM Go to last post
  29. 120V Commercial Honeywell thermostat install question

    Started by 520, 06-10-2016 06:23 PM
    • Replies: 3
    • Views: 352
    06-16-2016, 06:41 PM Go to last post
  30. older Lennox LCA 240

    Started by 75Porsche, 10-06-2014 04:43 PM
    • Replies: 8
    • Views: 1,506
    10-07-2014, 06:30 PM Go to last post
  31. Sealed or replaceable core?

    Started by 787REFMEC, 02-05-2015 09:10 PM
    • Replies: 10
    • Views: 1,450
    02-08-2015, 08:36 AM Go to last post
  32. mitsubishi mr slim restriction

    Started by 7dayprogramable, 09-28-2012 06:00 PM
    • Replies: 1
    • Views: 1,011
    09-28-2012, 07:42 PM Go to last post
  33. Any experience with this stat?

    Started by 7point62, 06-19-2013 06:04 PM
    • Replies: 2
    • Views: 666
    06-25-2013, 10:16 PM Go to last post
  34. blast chillers

    Started by 85goldwing, 08-16-2011 10:30 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 3,163
    09-28-2011, 11:40 PM Go to last post
  35. Trane Model YCH060C1L0BE

    Started by 907Controls, 02-20-2013 08:00 PM
    • Replies: 0
    • Views: 654
    02-20-2013, 08:00 PM Go to last post
  36. Ammonia in the air

    Started by 929rc51, 04-13-2014 07:23 PM
    • Replies: 6
    • Views: 998
    04-13-2014, 08:33 PM Go to last post
  37. copper to brass

    Started by 9live, 06-23-2016 11:00 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 838
    06-30-2016, 07:47 PM Go to last post
  38. JACE to RTU wiring

    Started by aamtech, 03-10-2014 04:10 PM
    • Replies: 2
    • Views: 785
    03-11-2014, 01:26 PM Go to last post
  39. High side pressure higher than normal...

    Started by aaronkim92, 04-25-2012 12:56 PM
    3 Pages
    1 2 3
    • Replies: 29
    • Views: 4,722
    05-08-2012, 10:55 AM Go to last post
  40. Low Suction Compressor #1 StulZ VHS

    Started by aaronmorgan19, 11-20-2011 12:51 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 1,332
    11-23-2011, 10:01 AM Go to last post
  41. Melted contactor, Lennox 6 ton rtu

    Started by Aaronn, 07-01-2013 11:33 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 2,788
    07-04-2013, 08:41 AM Go to last post
  42. low superheat control

    Started by Aaronn, 02-15-2014 12:58 AM
    • Replies: 1
    • Views: 758
    02-15-2014, 08:48 AM Go to last post
  43. JC ZJ12

    Started by AB815SC, 06-03-2013 08:53 PM
    • Replies: 5
    • Views: 800
    06-08-2013, 09:23 AM Go to last post
  44. RTU's not cooling the building enough

    Started by abcando, 07-06-2012 12:41 AM
    5 Pages
    1 2 3 4 5
    • Replies: 61
    • Views: 10,276
    07-14-2012, 09:33 PM Go to last post
  45. LG VRF system

    Started by abcets, 04-02-2014 08:35 AM
    • Replies: 8
    • Views: 1,200
    04-05-2014, 02:02 AM Go to last post
  46. Trane Fan powered VAV box with electric heat not heating

    Started by abcwiguy, 11-13-2014 07:02 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 3,741
    11-18-2014, 09:42 PM Go to last post
  47. Scottsman flaker

    Started by Abrnth3, 03-15-2013 01:16 PM
    • Replies: 1
    • Views: 720
    03-16-2013, 08:53 AM Go to last post
  48. Frown R22 Replacement

    Started by Abrnth3, 03-15-2013 01:03 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 5,843
    06-23-2013, 02:31 PM Go to last post
  49. Trane Voyager

    Started by Abrnth3, 06-13-2013 11:29 AM
    3 Pages
    1 2 3
    • Replies: 35
    • Views: 4,856
    06-19-2013, 09:07 PM Go to last post

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