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  1. Replies
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    You may want to check your in/out temp splits....

    You may want to check your in/out temp splits. The delta T will be lower the more dirty the coils are.
  2. Replies
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    Be careful with the Aqua's. The sizing has to be...

    Be careful with the Aqua's. The sizing has to be right or you will be seeing too many starts per hour and lockouts. Think about buffer tank if you go there. Total system volume is important. Consider...
  3. Replies
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    1,119

    It sounds like you have found yourself in a great...

    It sounds like you have found yourself in a great opportunity and asking the right questions.
    Sure wish i had the internet when i was in your shoes. Instead it was scouring used bookstores, trying...
  4. Replies
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    3,356

    I bought one and used it a few times so far. It...

    I bought one and used it a few times so far. It was worth the money.
    Still need a calculator along with it to get CFM... unless I am missing something.
    It is a bit more compact than the nice...
  5. Replies
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    dang another useful old tif. Wish I could find...

    dang another useful old tif.
    Wish I could find my TIF strobe RPM.
    That was when you had to have the Beckett and the
    TIF clamp to roll.
  6. Replies
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    Thanks.I did not know there was a difference.

    Thanks.I did not know there was a difference.
  7. Replies
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    I haven't read all of this thread but with two...

    I haven't read all of this thread but with two schnockered contactors I bet you have been undercharged in low ambient conditions .
    The chatter is caused by the low psi switch making and breaking and...
  8. Replies
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    Was your timer about to defrost when this...

    Was your timer about to defrost when this happened?
  9. If those are the notes given to you in the class,...

    If those are the notes given to you in the class, then i would put those values down on the test.

    It is good that you are asking these questions. Especially that you realize there are certain...
  10. Replies
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    Correction. The upflow is the happier of the...

    Correction.
    The upflow is the happier of the two.
    A couple of 1"x6" 's straddling the rear of the coil and the upper chassis brace shimming with heavy cardboard pieces will make the blower more...
  11. Replies
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    603

    I am doing one today in fact. Downflow is a...

    I am doing one today in fact.

    Downflow is a bear.

    You will be removing the entire bulkhead electrical
    panel.

    When it is all over you will be scratching your head wondering why you have...
  12. Replies
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    916

    I guess that was the only way to get them down...

    I guess that was the only way to get them down the steps.
    As i recall they had the inshot burner with a big old bonnet.

    They were from like Cincinnati?

    They were Cadillacs.
    The homeowner...
  13. Replies
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    916

    Yeah it makes the "sensitivity" adjustment go...

    Yeah it makes the "sensitivity" adjustment go whack.
  14. Replies
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    916

    The Iron Fireman. Now that is a real blast...

    The Iron Fireman.

    Now that is a real blast from the past.

    Takes me back to 6-8 "clean and checks" per day in the east side of Cleveland.
    Gravities, fan forced, and boilers too.

    That was...
  15. Pull the vent off the gas regulator. If they...

    Pull the vent off the gas regulator.
    If they have taken it off and put a pipe gooseneck in its place, take it off and blow thru it. It should be free.If not, get a solder stick and clean it out. ...
  16. Replies
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    916

    I could use a good "psycho" meter to test a few...

    I could use a good "psycho" meter to test a few folks I know.
    I mean, just to establish a good baseline before we start talking.
  17. If it is a semi it makes a very brief growling...

    If it is a semi it makes a very brief growling noise and goes into internal O/L.
  18. Replies
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    844

    Check your condenser fans Tstat settings and...

    Check your condenser fans Tstat settings and calibration.
  19. Replies
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    975

    Most of the existing OEM's online give rigging...

    Most of the existing OEM's online give rigging instructions to avoid new non LEED skylights.
  20. Thank you.

    Thank you.
  21. 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...
  22. Replies
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    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.
  23. Replies
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    956

    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".
  24. Replies
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    899

    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...
  25. Replies
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    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...
  26. Replies
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    3,534

    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.
  27. 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...
  28. Thanks for the instruction.

    Thanks for the instruction.
  29. 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...
  30. Replies
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    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...
  31. How is the oil doing?

    How is the oil doing?
  32. Replies
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    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...
  33. Replies
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    Hi rheff, have you run this unit in "test" mode...

    Hi rheff, have you run this unit in "test" mode yet?
  34. 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.
  35. 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.
  36. Are the boilers tempering this loop directly, or...

    Are the boilers tempering this loop directly, or do they do it thru a heat exchanger?
  37. Replies
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    All diffusers open?

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

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

    Anyone with experience on these racks could you email me?
    Thanks.
  40. Replies
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    1,701

    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.
  41. Replies
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    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.
  42. Replies
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    1,701

    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...
  43. Replies
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    1,161

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

    No Display = RS485 port on the drive. Windows 95 and later.
  44. Replies
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    I know that this is obvious..... Air??

    I know that this is obvious..... Air??
  45. Replies
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    1,433

    Are you using ball bearing motors on the p-66...

    Are you using ball bearing motors on the p-66 fans?
  46. Replies
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    1,701

    If you would like to "economize" your time on the...

    If you would like to "economize" your time on the job I would start in those offices. Customers on the sales floor don't usually complain about the HVAC system but the day to day office people would....
  47. Thanks, Control man, I'll take that for future...

    Thanks, Control man, I'll take that for future use.
  48. Replies
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    3,864

    Some baskets have handles for very convenient...

    Some baskets have handles for very convenient reasons.
  49. Replies
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    I don't think looking for common small issues is...

    I don't think looking for common small issues is really being lazy, Mr. McCann. If this is a basic PM Contract you were probably trying to save the customer some T&M billing. Also, I think you are...
  50. Replies
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    That is correct on that unit. My experience has...

    That is correct on that unit. My experience has been that the best way to adjust superheat on these machines is with both circuits loaded.

    Does this have a P-66 or Lee-Temp? Your subcooling, if...
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