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  1. Replies
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    As stated the "T" wire was hooked to an outdoor...

    As stated the "T" wire was hooked to an outdoor thermistor for heating anticipation of a mercury bulb thermostat, just omit it.
  2. There are many factors that go into making an...

    There are many factors that go into making an informed decision, warranty is just one of them. I will put Honeywell's' track record up against Nest any day of the week. just my $.015
  3. A "King Valve" is the liquid line shut off valve...

    A "King Valve" is the liquid line shut off valve at a receiver tank. A liquid line service valve is what you find on outdoor units. I ALWAYS wrap and cool with water ANY valve that I solder in, or...
  4. Is this a multi-stage unit?

    Is this a multi-stage unit?
  5. Replies
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    It is a little over 20 tons (024 = 20tons) and...

    It is a little over 20 tons (024 = 20tons) and was made the 45th week of 1993. It should be a standard Carlyle cast iron compressor with one or two unloaders, most likely suction cut-off unloading.
  6. Isn't "H1" the humidity sensor? Do you get a...

    Isn't "H1" the humidity sensor? Do you get a humidity reading at the stat now?
  7. The Vision Pro 8000 has a five year warranty,...

    The Vision Pro 8000 has a five year warranty, what does the Nest have. The 8000 is a rock solid stat with years of proven performance. I have installed many ecobee's and was not all that impressed...
  8. Sounds like you are talking about PTAC (package...

    Sounds like you are talking about PTAC (package terminal air conditioner) units not window shakers. They must be pulled and chemically cleaned (and lubed if equipped) before the cooling season to get...
  9. Being a VAV unit all it knows is discharge air...

    Being a VAV unit all it knows is discharge air temp setting and static pressure setting. It will ramp up and stage up accordingly. Make sure the time delay between rooftop units is set to allow...
  10. Lennox = Dec 1999 (2.5ton) Payne = 11th week...

    Lennox = Dec 1999 (2.5ton)

    Payne = 11th week of 2003 (4 ton)
  11. Replies
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    Thank you for the manual and information. John

    Thank you for the manual and information.
    John
  12. Replies
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    I am in Chesterfield Co. Thanks, John

    I am in Chesterfield Co.
    Thanks,
    John
  13. Replies
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    1,147

    Teletrol 186 info needed

    I ran into an old Teletrol 186 Integrator today that is has the "error light" on solid. They lost their building's transformer and now the system will not run. There is no information on site about...
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    Sounds like Precedent models.

    Sounds like Precedent models.
  15. I would suggest you look at fan speed control...

    I would suggest you look at fan speed control along with auto-reset freeze stats.
  16. Replies
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    If it was "Snowball" it would take twenty years...

    If it was "Snowball" it would take twenty years of that to kill it.
  17. Replies
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    Is the underside of the head smooth or does it...

    Is the underside of the head smooth or does it have a square plate bolted on?

    Smooth = hot gas bypass
    Square plate = Suction cut-off.
  18. Did they run a "Heat Load" on your house to...

    Did they run a "Heat Load" on your house to determine exactly what was needed for upstairs and downstairs, not just replace "like for like"? Houses change over time with trees growing up and more or...
  19. Carrier and Data Aire (IMHO) can not tie...

    Carrier and Data Aire (IMHO) can not tie Liebert's shoes (even though a lot of older Liebert units used Carlyle cast iron compressors). I take care of three at a local TV station that have been...
  20. Replies
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    All "39 Series" Carrier air handlers are purpose...

    All "39 Series" Carrier air handlers are purpose built so you will have to call Carrier( and hope you get someone that even knows what they are) to decipher its numbers. It appears to be built in the...
  21. Does it have anything attached to its "Emergency...

    Does it have anything attached to its "Emergency Stop" terminals? And if yes have you tried jumping them out?
  22. Replies
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    Is this a Trane Voyager with the UCP? If yes,...

    Is this a Trane Voyager with the UCP? If yes, have you taken the outdoor air sensor and discharge air sensors and checked their ohm readings? Also have you taken the outdoor sensor loose, pulled the...
  23. More information please. Are you trying to...

    More information please. Are you trying to replace the remote condenser, the indoor unit or what? How is Mitsubishi involved?

    Data Aire is a poor man's Liebert.
  24. Replies
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    Best bet is to take it to a motor shop for...

    Best bet is to take it to a motor shop for confirmation.
  25. Replies
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    Amen Brother! What, you mean I can't take a...

    Amen Brother!

    What, you mean I can't take a little pill that will cure all the world's ailments? You mean that I ACTUALLY have to do my job? :gah: :grin2:
  26. Replies
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    If I get a questionable meg reading I take an...

    If I get a questionable meg reading I take an acid/moisture test of the refrigerant to see if the reading is caused by contamination or winding insulation beginning to deteriorate.
  27. Replies
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    5 ton natural gas 79k BTU 208/230v 3p. In case...

    5 ton natural gas 79k BTU 208/230v 3p. In case you are interested.
  28. Replies
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    Check with Carrier. You will see a R86489 which...

    Check with Carrier. You will see a R86489 which would be 1988 but not two numbers until they went to "Week/Year" ex. 0399E which was made the third week of 1999 and was made in Syracuse. Prior to the...
  29. Replies
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    With manufacturers using more fins/inch to try...

    With manufacturers using more fins/inch to try and get max efficiency out of system it is tough to get the embedded dirt, pollen, and debris out without using a foaming coil cleaner. The only issues...
  30. Just be careful of your changeover setting. Also...

    Just be careful of your changeover setting. Also consider a mixed air thermostat to stage on the cooling if the outside ambient can't keep up with the load.
  31. Replies
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    Just like with the older Carrier units the serial...

    Just like with the older Carrier units the serial numbers can be deciphered:

    A-M = 1970's
    N-Z (Never O) = 1980's

    example:

    C9 = 1979
    S9 = 1989
  32. Replies
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    No manual, just from memory.

    No manual, just from memory.
  33. Replies
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    008 = 7.5 ton 501 = 208/230V 3ph 300 series =...

    008 = 7.5 ton
    501 = 208/230V 3ph

    300 series = 208/230V 1ph
    400 or 500 series = 208/230V 3ph
    600 series = 480V 3ph
  34. Replies
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    The original GE H10 was the best leak detector...

    The original GE H10 was the best leak detector that I have used, it would find leaks others failed to detect.
  35. Replies
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    My Fluke 52 has served me well. My Cooper used to...

    My Fluke 52 has served me well. My Cooper used to go through thermistors.
  36. Have you checked the subcooling to determine low...

    Have you checked the subcooling to determine low charge or restriction? Also what are you static pressures with the #2 compressor off?
  37. Replies
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    I agree. For checking motor windings or...

    I agree. For checking motor windings or electrical panels they work fine. I see too many people shooting a temperature across the room thinking it is accurate. I guess in their mind where ever the...
  38. Replies
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    They are known for control board failures. Pull...

    They are known for control board failures. Pull the board and look at the back side of the board for damage. Then disconnect the fan lead speeds, ohm the motor and check capacitor, then feed the...
  39. Replies
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    It is called "Emissivity". Quote:...

    It is called "Emissivity".

    Quote: "em·is·siv·i·ty
       [em-uh-siv-i-tee, ee-muh-]
    noun Thermodynamics .
    the ability of a surface to emit radiant energy compared to that of a black body at the...
  40. Replies
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    A leak can be fixed at tube sheets but you MUST...

    A leak can be fixed at tube sheets but you MUST clean the tubing and the steel thoroughly. First using needle nose pliers I rip the fins off at the repair site by grabbing and spinning the fins (both...
  41. Replies
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    +1 (6 minutes).

    +1 (6 minutes).
  42. Replies
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    Have you tried 409A (R12 medium temp), and R408A...

    Have you tried 409A (R12 medium temp), and R408A (Low temp)?
  43. Bryant, Day and Night, Payne = BDP.

    Bryant, Day and Night, Payne = BDP.
  44. Replies
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    I for one will be happy to see it go. :cheers:

    I for one will be happy to see it go. :cheers:
  45. Replies
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    Suction cut-off has plate on underside of head. ...

    Suction cut-off has plate on underside of head.

    http://www.brainerdcompressor.com/06d_06e_unloader_identification.htm


    Unloader adjustment:

    "Turn the adjustment nut clockwise to the bottom...
  46. Replies
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    12,082

    Rector Seal #5, Gasolia, and Leak Lock. I just...

    Rector Seal #5, Gasolia, and Leak Lock. I just got some Harveyseal Formula 55 to try.
  47. Replies
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    Early in my career I was working on a Church that...

    Early in my career I was working on a Church that was being built. I had my brand new ( one day old) Amprobe on a blower motor in an equipment room. I stepped not fifteen feet from the meter to get...
  48. Replies
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    And "Daytime Warmup" if enabled.

    And "Daytime Warmup" if enabled.
  49. Replies
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    American Standard/Trane are good quality units. I...

    American Standard/Trane are good quality units. I would suggest going to the distributor and talking to them about becoming a dealer. They can go over any manuals that you want to see.
  50. Replies
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    Look at two stage gas furnaces. The supply temps...

    Look at two stage gas furnaces. The supply temps of most heat pumps will have the elderly tenants lined up with pitch forks waiting for you. :grin2:
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