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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: NO AOP posts here please. ONLY Tech to Tech chatter

    Started by Dad, 08-10-2011 05:34 PM
    • Replies: 0
    • Views: 4,365
    08-10-2011, 05:34 PM Go to last post
  1. Internal Bypass TXV?

    Started by 02JeepKing, 05-30-2013 09:44 PM
    • Replies: 4
    • Views: 672
    05-30-2013, 10:28 PM Go to last post
  2. Lennox Gurus

    Started by 1-Hvacdoc, 08-20-2011 10:53 AM
    • Replies: 4
    • Views: 1,657
    08-20-2011, 10:58 PM Go to last post
    • Replies: 4
    • Views: 1,064
    05-15-2012, 07:59 PM Go to last post
  3. Rtu and digicools.

    Started by 11crv, 05-29-2014 09:34 PM
    • Replies: 7
    • Views: 426
    05-30-2014, 01:46 PM Go to last post
  4. systems with dual tx valves and check valves

    Started by 12gauge, 07-26-2013 05:07 AM
    • Replies: 1
    • Views: 419
    07-27-2013, 12:34 AM Go to last post
  5. Trane YCD240 gas valve operation

    Started by 1966Chevy2, 10-05-2014 06:28 PM
    • Replies: 8
    • Views: 429
    10-07-2014, 11:52 AM Go to last post
  6. DX dehum makeup air units

    Started by 19characterusername, 07-12-2012 11:38 PM
    • Replies: 5
    • Views: 888
    07-22-2012, 11:06 PM Go to last post
  7. Trane E Machine Rebuild Info requested

    Started by 1SikLBZ, 08-28-2013 11:25 PM
    • Replies: 4
    • Views: 478
    10-01-2013, 12:10 PM Go to last post
  8. Hmm Unloaders

    Started by 1tonn, 03-23-2012 09:44 PM
    • Replies: 3
    • Views: 852
    03-23-2012, 10:49 PM Go to last post
  9. Nu-Calgon Moisture Removal

    Started by 1tonn, 08-08-2013 12:54 PM
    • Replies: 5
    • Views: 526
    08-08-2013, 08:13 PM Go to last post
    • Replies: 12
    • Views: 931
    09-09-2013, 03:15 AM Go to last post
  10. I hate phantom voltage

    Started by 2sac, 12-09-2011 12:36 AM
    • Replies: 8
    • Views: 974
    12-10-2011, 09:45 AM Go to last post
  11. Oil in a gas line

    Started by 2sac, 01-05-2012 10:36 PM
    • Replies: 5
    • Views: 734
    01-23-2012, 08:52 PM Go to last post
  12. Need a manual and/or schematic for GE

    Started by 2sac, 01-16-2013 07:54 PM
    • Replies: 3
    • Views: 512
    01-18-2013, 02:22 AM Go to last post
  13. Confused Weil McLain GV-6 No HSI voltage

    Started by 2story, 09-09-2013 11:10 PM
    • Replies: 0
    • Views: 291
    09-09-2013, 11:10 PM Go to last post
  14. Trane Voyager, intermitant No Heat

    Started by 2wings, 12-31-2013 10:31 AM
    3 Pages
    1 2 3
    • Replies: 27
    • Views: 1,576
    01-03-2014, 05:23 PM Go to last post
  15. how do i tell when my vac pump is going bad?

    Started by 3800tom, 08-29-2011 02:37 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,006
    11-19-2011, 01:16 PM Go to last post
  16. Adjust an EPR w/o a pressure tap?

    Started by 3800tom, 09-01-2011 01:13 PM
    • Replies: 10
    • Views: 1,337
    02-25-2013, 10:15 PM Go to last post
  17. GPM for Airflow CCT-30 Glycol System?

    Started by 3gs, 08-14-2014 11:33 AM
    • Replies: 2
    • Views: 402
    08-21-2014, 01:04 PM Go to last post
  18. McQuay water source heat pump

    Started by 461pat, 11-03-2011 09:09 AM
    2 Pages
    1 2
    • Replies: 20
    • Views: 3,379
    03-02-2012, 10:02 PM Go to last post
  19. Confused Control Head on Variable Speed pumping systems?

    Started by 500GPMdT, 05-28-2013 03:05 PM
    • Replies: 9
    • Views: 938
    06-03-2013, 05:06 PM Go to last post
  20. WSHP & fluid cooler education

    Started by 500GPMdT, 07-01-2013 10:04 PM
    • Replies: 1
    • Views: 525
    07-02-2013, 11:23 AM Go to last post
  21. Trane Intellipak EF problem

    Started by 501miller, 03-15-2013 10:00 AM
    • Replies: 9
    • Views: 949
    04-02-2013, 01:45 AM Go to last post
  22. Daikin VRV's or Mitsubiski VRD

    Started by 50Panhead, 03-20-2013 05:29 PM
    • Replies: 0
    • Views: 404
    03-20-2013, 05:29 PM Go to last post
  23. older Lennox LCA 240

    Started by 75Porsche, 10-06-2014 05:43 PM
    • Replies: 8
    • Views: 469
    10-07-2014, 07:30 PM Go to last post
  24. mitsubishi mr slim restriction

    Started by 7dayprogramable, 09-28-2012 07:00 PM
    • Replies: 1
    • Views: 668
    09-28-2012, 08:42 PM Go to last post
  25. Any experience with this stat?

    Started by 7point62, 06-19-2013 07:04 PM
    • Replies: 2
    • Views: 435
    06-25-2013, 11:16 PM Go to last post
  26. blast chillers

    Started by 85goldwing, 08-16-2011 11:30 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 2,171
    09-29-2011, 12:40 AM Go to last post
  27. Trane Model YCH060C1L0BE

    Started by 907Controls, 02-20-2013 08:00 PM
    • Replies: 0
    • Views: 362
    02-20-2013, 08:00 PM Go to last post
  28. Ammonia in the air

    Started by 929rc51, 04-13-2014 08:23 PM
    • Replies: 6
    • Views: 519
    04-13-2014, 09:33 PM Go to last post
  29. JACE to RTU wiring

    Started by aamtech, 03-10-2014 05:10 PM
    • Replies: 2
    • Views: 391
    03-11-2014, 02:26 PM Go to last post
  30. High side pressure higher than normal...

    Started by aaronkim92, 04-25-2012 01:56 PM
    3 Pages
    1 2 3
    • Replies: 29
    • Views: 3,286
    05-08-2012, 11:55 AM Go to last post
  31. Low Suction Compressor #1 StulZ VHS

    Started by aaronmorgan19, 11-20-2011 12:51 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 865
    11-23-2011, 10:01 AM Go to last post
  32. Melted contactor, Lennox 6 ton rtu

    Started by Aaronn, 07-02-2013 12:33 AM
    2 Pages
    1 2
    • Replies: 13
    • Views: 1,309
    07-04-2013, 09:41 AM Go to last post
  33. low superheat control

    Started by Aaronn, 02-15-2014 12:58 AM
    • Replies: 1
    • Views: 424
    02-15-2014, 08:48 AM Go to last post
  34. JC ZJ12

    Started by AB815SC, 06-03-2013 09:53 PM
    • Replies: 5
    • Views: 454
    06-08-2013, 10:23 AM Go to last post
  35. RTU's not cooling the building enough

    Started by abcando, 07-06-2012 01:41 AM
    5 Pages
    1 2 3 4 5
    • Replies: 61
    • Views: 6,322
    07-14-2012, 10:33 PM Go to last post
  36. LG VRF system

    Started by abcets, 04-02-2014 09:35 AM
    • Replies: 8
    • Views: 516
    04-05-2014, 03:02 AM Go to last post
  37. 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: 674
    11-18-2014, 09:42 PM Go to last post
  38. Scottsman flaker

    Started by Abrnth3, 03-15-2013 02:16 PM
    • Replies: 1
    • Views: 390
    03-16-2013, 09:53 AM Go to last post
  39. Frown R22 Replacement

    Started by Abrnth3, 03-15-2013 02:03 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 2,605
    06-23-2013, 03:31 PM Go to last post
  40. Trane Voyager

    Started by Abrnth3, 06-13-2013 12:29 PM
    3 Pages
    1 2 3
    • Replies: 35
    • Views: 2,745
    06-19-2013, 10:07 PM Go to last post
  41. Could clicking relay cause overload

    Started by absolutezerosev, 08-05-2014 02:03 AM
    2 Pages
    1 2
    • Replies: 24
    • Views: 723
    08-13-2014, 08:52 PM Go to last post
  42. Confused Formicary Corrosion

    Started by acdave17, 11-29-2011 09:54 PM
    • Replies: 4
    • Views: 925
    12-08-2011, 10:07 PM Go to last post
  43. Thumbs up 460V 1PH condenser fan motor ????

    Started by AcDOCnTRAINING, 02-07-2008 06:15 PM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 80
    • Views: 8,736
    09-17-2011, 11:28 PM Go to last post
  44. looking for schematic

    Started by acdude32, 05-24-2012 05:06 PM
    • Replies: 2
    • Views: 662
    05-24-2012, 11:12 PM Go to last post
  45. Dilution OSA

    Started by ACFIXR, 08-11-2011 11:12 PM
    • Replies: 2
    • Views: 1,188
    08-12-2011, 04:07 AM Go to last post
  46. Delta High "B" phase

    Started by ACFIXR, 04-17-2012 12:42 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 2,011
    04-18-2012, 11:26 PM Go to last post
  47. Favorite VFD

    Started by ACFIXR, 04-18-2012 01:34 AM
    3 Pages
    1 2 3
    • Replies: 26
    • Views: 2,972
    05-15-2012, 02:51 PM Go to last post
  48. Reactors

    Started by ACFIXR, 04-29-2012 01:53 PM
    • Replies: 1
    • Views: 650
    04-29-2012, 08:41 PM Go to last post

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