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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: 9,666
    08-10-2011, 04:34 PM Go to last post
  1. Normal Thread Normal Threads

  2. Smile Quickly sketch and share HVAC systems

    Started by Frozenlock, 01-07-2015 03:56 PM
    3 Pages
    1 2 3
    • Replies: 32
    • Views: 6,778
    09-14-2015, 12:47 PM Go to last post
  3. Hmm Origin of thermostat terminal letters

    Started by Bruce Hendricks, 09-10-2015 12:38 PM
    4 Pages
    1 2 3 4
    • Replies: 47
    • Views: 3,639
    09-13-2015, 10:19 PM Go to last post
  4. Wattmaster/ Aaon control question

    Started by bgrich2003, 09-11-2015 02:00 PM
    • Replies: 4
    • Views: 732
    09-13-2015, 11:41 AM Go to last post
  5. Capacity control problem

    Started by alex87gr, 08-13-2015 01:33 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 3,171
    09-12-2015, 03:41 PM Go to last post
  6. How to test Compressor Valves

    Started by Junior1983, 09-09-2015 11:49 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,814
    09-12-2015, 01:49 PM Go to last post
  7. Carrier PTAC blower wheel replacement

    Started by killer v, 09-10-2015 02:54 PM
    • Replies: 2
    • Views: 520
    09-10-2015, 04:09 PM Go to last post
    • Replies: 5
    • Views: 771
    09-10-2015, 09:33 AM Go to last post
  8. Cooler electric defrost

    Started by lytning, 09-09-2015 10:01 AM
    • Replies: 6
    • Views: 968
    09-10-2015, 05:32 AM Go to last post
  9. Question about Water Source Heatpumps

    Started by hvacsolutions, 11-05-2013 03:09 PM
    3 Pages
    1 2 3
    • Replies: 33
    • Views: 3,087
    09-10-2015, 03:22 AM Go to last post
  10. Making the switch from residential to commercial

    Started by mpenney, 09-01-2015 08:36 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 2,055
    09-09-2015, 07:31 PM Go to last post
    • Replies: 11
    • Views: 1,877
    09-09-2015, 12:40 PM Go to last post
  11. Condensate lines for high efficiency unit

    Started by Dumplumer, 09-06-2015 02:00 PM
    • Replies: 6
    • Views: 886
    09-07-2015, 06:22 AM Go to last post
  12. Carrier 50HJQ intermittent issues.

    Started by mbarker84, 09-04-2015 06:12 PM
    • Replies: 11
    • Views: 1,037
    09-06-2015, 12:21 PM Go to last post
  13. Duct static Readings Mean?

    Started by Junior1983, 08-28-2015 11:44 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 2,284
    09-04-2015, 05:24 PM Go to last post
    • Replies: 12
    • Views: 3,056
    09-04-2015, 12:38 PM Go to last post
  14. Confused Daikin fan speed???

    Started by Big Unit, 09-02-2015 11:27 AM
    • Replies: 3
    • Views: 868
    09-04-2015, 12:14 PM Go to last post
  15. I have a 6 amp motor running 18 amps measured after the VFD

    Started by alikair, 09-02-2015 10:59 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 1,946
    09-04-2015, 10:07 AM Go to last post
  16. 1950's Trane Univent

    Started by mkraintz, 09-02-2015 11:56 AM
    • Replies: 0
    • Views: 602
    09-02-2015, 11:56 AM Go to last post
  17. Re insulation of Refrigerant Lines

    Started by Cory Wells, 08-25-2015 11:40 AM
    2 Pages
    1 2
    • Replies: 22
    • Views: 4,301
    09-02-2015, 10:43 AM Go to last post
  18. chrigs

    Started by chrigs, 09-01-2015 01:55 PM
    • Replies: 8
    • Views: 1,186
    09-01-2015, 09:12 PM Go to last post
  19. What am I missing?

    Started by 280zx, 07-22-2015 09:06 PM
    3 Pages
    1 2 3
    • Replies: 38
    • Views: 6,937
    09-01-2015, 08:43 PM Go to last post
  20. Fresh air intake options

    Started by swetha, 08-31-2015 03:07 AM
    • Replies: 3
    • Views: 904
    09-01-2015, 07:04 PM Go to last post
  21. Best vaccum pump

    Started by Junior1983, 08-14-2015 12:07 AM
    5 Pages
    1 2 3 4 5
    • Replies: 59
    • Views: 6,980
    09-01-2015, 04:03 PM Go to last post
  22. Using 1/3 hp instead of 1/4 hp any problem?

    Started by DeltaTech, 08-31-2015 11:23 AM
    • Replies: 9
    • Views: 1,674
    09-01-2015, 02:43 PM Go to last post
  23. Copeland temperature sensor question

    Started by richp, 08-31-2015 07:35 PM
    • Replies: 8
    • Views: 1,387
    09-01-2015, 09:21 AM Go to last post
  24. Lennox CHP20-060-4G Issues?

    Started by Junior1983, 08-31-2015 11:12 PM
    • Replies: 1
    • Views: 1,009
    09-01-2015, 12:57 AM Go to last post
  25. Scroll Vibration

    Started by jimp, 08-30-2015 01:01 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 1,974
    08-31-2015, 11:02 PM Go to last post
  26. New AC problem

    Started by Bdeeks, 08-31-2015 12:45 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,809
    08-31-2015, 03:57 PM Go to last post
  27. Manuals

    Started by wra, 07-31-2015 07:06 PM
    • Replies: 6
    • Views: 1,795
    08-31-2015, 07:10 AM Go to last post
  28. What up with icp technical support?

    Started by drage93, 08-30-2015 02:13 PM
    • Replies: 4
    • Views: 1,611
    08-30-2015, 11:32 PM Go to last post
  29. Exeter XL system controller manual search

    Started by xibu, 08-30-2015 10:57 PM
    • Replies: 0
    • Views: 964
    08-30-2015, 10:57 PM Go to last post
  30. Help! Uneven amp draw on fan motor.

    Started by DanDaMan370, 08-28-2015 12:29 AM
    7 Pages
    1 2 3 4 5 6 ... 7
    • Replies: 89
    • Views: 8,428
    08-30-2015, 06:08 PM Go to last post
  31. lennox package unit

    Started by drage93, 08-22-2015 09:13 PM
    3 Pages
    1 2 3
    • Replies: 35
    • Views: 3,985
    08-28-2015, 08:30 PM Go to last post
  32. HOW DOES THIS WORK ? 4 STAGE THERMOSTAT

    Started by lostro, 08-25-2015 12:16 AM
    • Replies: 5
    • Views: 1,279
    08-28-2015, 04:45 PM Go to last post
    • Replies: 8
    • Views: 1,275
    08-28-2015, 04:17 AM Go to last post
  33. Honeywell JADE economiser

    Started by Junior1983, 05-09-2015 10:59 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 3,971
    08-27-2015, 10:27 PM Go to last post
  34. 60 ton Trane Chiller (2003)

    Started by hcpwr, 07-10-2015 06:55 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 2,483
    08-27-2015, 07:56 PM Go to last post
  35. Envision water furnace question

    Started by rrobmac, 08-27-2015 06:06 PM
    • Replies: 0
    • Views: 657
    08-27-2015, 06:06 PM Go to last post
  36. liebert product data

    Started by timjimbob, 08-25-2015 07:26 AM
    • Replies: 4
    • Views: 1,017
    08-27-2015, 07:13 AM Go to last post
  37. ABB 550 VFD trips over current?

    Started by CEAS-AC-TECH, 08-26-2015 09:32 AM
    • Replies: 11
    • Views: 1,428
    08-26-2015, 11:01 PM Go to last post
  38. Pumping down circuit

    Started by hands, 08-25-2015 08:34 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 1,975
    08-26-2015, 06:28 PM Go to last post
  39. Roof reinforcement for new RTU install

    Started by checkpoint, 08-26-2015 12:25 PM
    • Replies: 2
    • Views: 852
    08-26-2015, 01:16 PM Go to last post
  40. Post Copeland Scroll Compressor Data Needed

    Started by Push It, 08-25-2015 05:15 PM
    • Replies: 6
    • Views: 1,002
    08-26-2015, 07:23 AM Go to last post
  41. Am I reading PT chart correctly?

    Started by Junior1983, 08-23-2015 06:18 PM
    • Replies: 10
    • Views: 1,408
    08-26-2015, 05:27 AM Go to last post
    • Replies: 11
    • Views: 1,929
    08-25-2015, 07:06 PM Go to last post
  42. carrier 06la118 compressor

    Started by james mo, 08-24-2015 08:52 PM
    • Replies: 2
    • Views: 930
    08-25-2015, 02:59 PM Go to last post
  43. Old Trane Multizone Unit

    Started by raven5, 08-25-2015 11:13 AM
    • Replies: 1
    • Views: 990
    08-25-2015, 11:39 AM Go to last post
  44. McQuay RTU High Pressure lock out problem

    Started by richper, 08-05-2015 04:27 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 2,810
    08-24-2015, 10:16 PM Go to last post
  45. Humidity control problems with Humidisk65

    Started by Tularac, 08-24-2015 04:41 PM
    • Replies: 1
    • Views: 716
    08-24-2015, 09:17 PM Go to last post
  46. Confused Condenser fan is not discharging properly. NEED HELP!

    Started by Robert Roman, 08-16-2015 07:33 PM
    4 Pages
    1 2 3 4
    • Replies: 45
    • Views: 5,179
    08-24-2015, 06:33 PM Go to last post

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