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  1. Thank you.

    Thank you.
  2. Trane fan coil Old Unitrane model number description

    I am trying to get an old model number description (about 1983) in order to provide proper data to Trane for replacement units. What I am looking for are what the old system digits meant like 3 or 4...
  3. Replies
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    686

    And are your pumps on the roof or down below. Are...

    And are your pumps on the roof or down below. Are they on vfd's or constant volume. Are there three way valves or two way.
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    769

    You will need to get the head off whether you...

    You will need to get the head off whether you repair or replace...
    mixed brass pays less.
    And that makes for more salad, "bunny".
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    5
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    716

    It is Tracer ZN510 or 524 with a baysens 006B...

    It is Tracer ZN510 or 524 with a baysens 006B ZSM.
    My question is, can I get a list of the current diagnostics thru an LED blinks code or do I have to sic "Rover" on it. The literature on the...
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    5
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    716

    Trane expert WSHP GEHB048

    Does anyone know the model number of the ZSM with a set point only? Also the main board has only one LED w/ no test pins. Seeing no fan op, steady Green LED.
    There are no occupancy switches on the...
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    2,823

    Some of the AAON machines size their VA's very...

    Some of the AAON machines size their VA's very closely. Look for damper actuators,added relays (like for fire alarms) etc. Not much additional capacity is available with the OEM transformer.
  8. Where your boilers are located in reference to...

    Where your boilers are located in reference to your pump package will make a difference.
    Think about column weight in your risers.

    Ground control to Major Atwood...
  9. Thanks for the instruction.

    Thanks for the instruction.
  10. You could get a second opinion. Contractor 1...

    You could get a second opinion.
    Contractor 1 provided a well written explanation of his diagnosis and remedy.
    Contractor 2 might not be as sharp.
    The question you will have to answer is if you are...
  11. Replies
    27
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    4,937

    Thanks for this diagnostic tool. Brings me back...

    Thanks for this diagnostic tool. Brings me back to building my first vacuum pump from an old GM Fridgidaire refrigerator compressor (they ran in a vacuum normally). And the old Simpson 260, then when...
  12. How is the oil doing?

    How is the oil doing?
  13. Replies
    7
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    1,204

    I have serviced alot of churches over the years...

    I have serviced alot of churches over the years and also have commonly found airflow issues. Certain wings and rooms get closed off so that only the office area(s) which are occupied daily are left...
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    1,683

    Hi rheff, have you run this unit in "test" mode...

    Hi rheff, have you run this unit in "test" mode yet?
  15. Where your boiler is located in reference to your...

    Where your boiler is located in reference to your pumps is important to know. Also if you have a multi storey bldg. where are the pumps.
  16. Are your boilers on the same level as your pumps,...

    Are your boilers on the same level as your pumps, are are they lower? Your loop psi may be too high.
  17. Are the boilers tempering this loop directly, or...

    Are the boilers tempering this loop directly, or do they do it thru a heat exchanger?
  18. Replies
    7
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    1,204

    All diffusers open?

    All diffusers open?
  19. The expansion tank is okay..... meaning??

    The expansion tank is okay..... meaning??
  20. Data Center Knurr Cooltherm w/o CoolCon

    Anyone with experience on these racks could you email me?
    Thanks.
  21. Replies
    13
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    1,499

    If you have a VP motor sheave you could close it...

    If you have a VP motor sheave you could close it some and see what you get.
  22. Replies
    12
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    2,125

    I guess you'd better. the guy in the picture is...

    I guess you'd better. the guy in the picture is already looking for a pipe chase.
  23. Replies
    13
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    1,499

    ARI (AHRI) is an HVACR product testing and...

    ARI (AHRI) is an HVACR product testing and performance verification entity. They test equipment according to their standards and publish them.

    For instance, they tested Dave "Attaboy" Lennox's...
  24. Replies
    3
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    986

    No Display = RS485 port on the drive. Windows 95...

    No Display = RS485 port on the drive. Windows 95 and later.
  25. Replies
    18
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    2,451

    I know that this is obvious..... Air??

    I know that this is obvious..... Air??
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