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  1. Replies
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    Thank you for the dialogue. I have been accused...

    Thank you for the dialogue. I have been accused before of overthinking simple task. A wall is a wall and I march forward!:cheers:
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    "pay no attention to the shingles if on a wall"...

    "pay no attention to the shingles if on a wall" this surprises me as the shingles absorb a ridiculous amount of heat as we all know form trips to the attic. I have tallied the r values for each of...
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    455

    There are no radiant barriers in the walls...

    There are no radiant barriers in the walls according to the owner. Yes I have the math for calculating R and U values. I do however appreciate the response. This post had over 130 views with no...
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    Load Calculation/HTM Help

    I have hit a load calculation bump and need some help. Two story residence with nothing unusual except the front and back second story SIDING is dark ROOFING architect shingles. Front is southern...
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    Please ask Field Piece and post the answer you...

    Please ask Field Piece and post the answer you get here. Thanks
  6. Replies
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    1,091

    Thank you Chuck, So what your telling me is?...

    Thank you Chuck,

    So what your telling me is? It calculates the enthalpy of entering air and assumes CFM of X then calculate the TEET using the total heat equation. Qt= cfm x 4.5 x enthalpy delta
  7. Replies
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    1,091

    SDP-2 Target Evap Exit Temp???

    Does anyone know under what assumptions the SDP-2 calculates Target Evaporator Exit Temp (TEET). I am asking because no where in the instructions does it mention inputing air volume CFM. My schooling...
  8. Replies
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    536

    I give up. Important stuff starts in am with...

    I give up. Important stuff starts in am with first service call. Good night all
  9. Replies
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    536

    Round 2?

    Round 2?
  10. Replies
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    536

    I can heat it, cool it humidify and dehumidify...

    I can heat it, cool it humidify and dehumidify but posting a picture on my profile? Well? Good thing I can use a psychrometric chart huh? Round two coming. Standby
  11. Replies
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    536

    My new profile picture

    How's it look?
  12. Replies
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    889

    Thats what I was thinking just needed to hear it...

    Thats what I was thinking just needed to hear it from someone else to validate. Thank you. Plan on blanking off part of the fan housing itself. It will be a trial and error process, but plan is to...
  13. Replies
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    Thank you for response. And no the furnace is...

    Thank you for response. And no the furnace is already on the low speed tap of a 4 speed psc motor. Brand is Ruud UGTA-4. Total static is .3. I need some creative way to get airflow lower with minimum...
  14. Replies
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    Ditto on not reading PSI on gauges. Life gets a...

    Ditto on not reading PSI on gauges. Life gets a lot easier when you stop referring to a PT chart.
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    889

    Too much air flow

    I read some post a while back concerning too much airflow and easy solutions to decrease airflow. But I cannot find it. Please help. What I need to do is reduce furnace airflow by approx 180CFM to...
  16. Replies
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    For the money the best book I have recently added...

    For the money the best book I have recently added to my library is "Pumping Away" written by Dan Holohan. Don't get to work with a lot of hydronic systems unfortunately, but Mr. Holohan puts it...
  17. Replies
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    827

    And therein lies the issue. What is coming out is...

    And therein lies the issue. What is coming out is a 3 ton system. So will the four ton od unit mandate a complete new duct job? And if so then may not be worth the hassle. Load calc shows it will...
  18. Replies
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    827

    Thank you for feed back. Agree systems are...

    Thank you for feed back. Agree systems are expensive, but do you know the answer the question? Will we be stuck with 1186 cfm airflow?
  19. Replies
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    827

    Carrier Greenspeed Fan Speed

    Looking for some feedback from a Greenspeed experienced tech/installer concerning fan speeds and cfm.
    I have read the equipment sizing guidelines, and I have the Min/Max airflow tables in front of...
  20. Replies
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    Yellow jacket steel braided hoses hook the pump...

    Yellow jacket steel braided hoses hook the pump with the YJ vacuum tee. Awesome setup. I use 3/8 hoses and pull down new install evap and lineset in about 5 minutes. Money well spent.
  21. On behalf of us that appreciate the value of your...

    On behalf of us that appreciate the value of your post shophound I would like to say thank you. I was fortunate enough to enter this trade under the guidance of a professional that analyzes data just...
  22. Replies
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    1,395

    Keep the inverter for camping and get yourself a...

    Keep the inverter for camping and get yourself a good HD extension cord. Preferrably 12ga wire or larger. Never needed more than 50ft cord. If no outlet pickup power at the service disconnect. You...
  23. Replies
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    Anthony Weiner is without a doubt sick. But the...

    Anthony Weiner is without a doubt sick. But the real sick S*^% is his wife standing next to him explaining how she has forgiven him and that he is a good man etc etc etc! So then the real question...
  24. X3

    X3
  25. Replies
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    2,743

    Concur on the voyage controls suck suck suck. And...

    Concur on the voyage controls suck suck suck. And as memory serves me last one I work on every damn wire it was blue blue and blue, with pretty little numbers on each wire! It sucked.
  26. Replies
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    Plot the data on a psychometric chart and you...

    Plot the data on a psychometric chart and you will see why people steer clear of those request. Walterc has been there and done that and sounds like never again. Read and heed. Was told story by a...
  27. See post #9 Good night to all

    See post #9
    Good night to all
  28. The data you need (I use): Condenser spread:...

    The data you need (I use):
    Condenser spread: saturated condensing temp - outdoor ambient
    Approach temp: liquid line - outdoor ambient
    Sub cooling: saturated condensing temp- liquid line...
  29. With all due respect to the last post, throw the...

    With all due respect to the last post, throw the pt chart away. Learn what your temp splits should be for the different types of systems you work on and concentrate working with the temps only. The...
  30. And the saturated temps are the same regardless...

    And the saturated temps are the same regardless of the refrigerant. Never really understood why guys always read the pressures? The pt chart is right in front of ya! Look at your gauges. If the...
  31. Replies
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    Hands down the number one deficiency is the air...

    Hands down the number one deficiency is the air side, high static pressures, run outs not properly located on trunk, undersized filter back grills etc. the list goes on and on. I like the idea of...
  32. Replies
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    3,133

    There are way too many numbers in this business...

    There are way too many numbers in this business to "I went back through things in my mind". I always have pad and pen available, it helps me to think things through to logical conclusions. Then...
  33. Mr. Ridley and the shop hound provide the level...

    Mr. Ridley and the shop hound provide the level of assistance that is much needed. The word of the day is enthalpy. Yes spelled e n t h a l p y.
    Correct data points and a psychometric chart will...
  34. Replies
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    3,133

    What's that superheat for anyway? Got nothing to...

    What's that superheat for anyway? Got nothing to do compressor protection does it?
  35. If only the bakers union could have come to terms...

    If only the bakers union could have come to terms with Hostess! I miss my cupcakes and twinkles that we're in my lunch box everyday....:(:(
  36. Replies
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    Lost razor knife one day, couldn't figure it out....

    Lost razor knife one day, couldn't figure it out. 6 months later found it right were I left it, on top of a fan coil in an attic. My advice is to build a routine as much as possible. Keys always go...
  37. This is the Ask Our Pro's forum, and only Pro...

    This is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise, commentary, or ask questions of the OP here.

    You can find the rules for posting and...
  38. Replies
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    2,694

    Yes you have to look at the gauges correctly....

    Yes you have to look at the gauges correctly. Suggest you take look at the 3 inch models with 1 degree resolution. And lastly, on residential units do ya really need to +/- a tenth of a degree? If...
  39. Replies
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    Well union dues has paid for some good things...

    Well union dues has paid for some good things like Las Vegas, thank you teamsters!
    And so we are clear on what "right to work" really means for union guys. I can go to work in a "union" shop and...
  40. Replies
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    To each his own. I respect a mans decision to do...

    To each his own. I respect a mans decision to do what is best for his family. But not caring where or what your dues is spent on as long as you get yours? Really?
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    Ya all that and more you trained killing machine...

    Ya all that and more you trained killing machine with the picture of KITTY!
  42. Replies
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    8,746

    Disparity between the classes? What classes would...

    Disparity between the classes? What classes would that be? Your class that chose to be a mechanic and the CEO class who chose to go to school to learn how run a corporation? Ask yourself this, if the...
  43. No need to buy expensive test equipment for wet...

    No need to buy expensive test equipment for wet bulb! Trance factory reps use thermometer with short wet shoe lace over the bulb, you can do same thing with k style temp sensors. Take reading when...
  44. Replies
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    May rugged bad choice of words, I am thinking not...

    May rugged bad choice of words, I am thinking not affected by the rain! And in response to garychancen what time and figuring do they save you? If you read gauge pressures then I understand how they...
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    Right to work states. The need for labor unions...

    Right to work states. The need for labor unions in this country have come and gone. Union guys must ask themselves one key question "what is the union spending my dues on".
  46. Replies
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    Rundawg is right! If airflow is not correct then...

    Rundawg is right! If airflow is not correct then well "forget about it"!
    Data really needed is the condenser spread, approach temp, evaporator wet bulb split, subcooling and superheated. Get the...
  47. This is the Ask Our Pro's forum, and only Pro...

    This is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise, commentary, or ask questions of the OP here.

    You can find the rules for posting and...
  48. Replies
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    8,552

    Mitsubishi has great support, good documentation...

    Mitsubishi has great support, good documentation and warranty when needed. I own two myself and have installed many more with no issues.
    Why can't you graze the line sets? Like any other brazing...
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    2,694

    Are the digital gauges really worth the hassle....

    Are the digital gauges really worth the hassle. Why pay 100's of dollars for fragile electronics when a rugged ole bourbon gauge will the job just fine?
  50. Replies
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    2nd for the bucket of water with wet rags!

    2nd for the bucket of water with wet rags!
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