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  1. Replies
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    A kid I grew up with came from down south and a...

    A kid I grew up with came from down south and a bolt to him was a tap and a nut was a burr. After terms are used interchangeably for a while whether right or wrong they become acceptable.
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    I have read the articles about what the "experts"...

    I have read the articles about what the "experts" say however in the beginning there was a pulley and they were used for rope. When belt drives came along they were called sheaves because the grooves...
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    If you're getting into commercial start using the...

    If you're getting into commercial start using the correct terms. Pulleys are for rope and sheaves are for belts. That may not sound like a big deal but a lot of experienced HVAC guys take notice of...
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    Heatingman I assume the set pressure on those...

    Heatingman I assume the set pressure on those valves is adjustable.
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    Couple all you guys have pointed out with 1/2"...

    Couple all you guys have pointed out with 1/2" fan static pressure and no wonder.
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    I designed the really big systems and they were...

    I designed the really big systems and they were vented continuously.
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    All I can say on that one BBeerme is WOW!!!

    All I can say on that one BBeerme is WOW!!!
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    Good explanation heatingman. The vents are fixed...

    Good explanation heatingman. The vents are fixed orifices and are called non-condensables vents. They vent off gases such as excess oxygen and carbon monoxide that are destructive to the piping and...
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    The "rant" was good BNME8EZ because you gave us...

    The "rant" was good BNME8EZ because you gave us an example of how well static regain design can work.
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    The most accurate method of determining CFM is by...

    The most accurate method of determining CFM is by pitot traverse. The problem with a pitot is finding a place to do one. Most of the time on commercial jobs there will be a good place but on resi...
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    I agree Ikapigian that duct problems are the...

    I agree Ikapigian that duct problems are the elephant. What bothers me the most about duct systems is that nothing has been done for years about determining system effect factors that are not known....
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    Deaerators are a crucial component of commercial...

    Deaerators are a crucial component of commercial steam systems.
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    Because some confuse head tanks with deaerators...

    Because some confuse head tanks with deaerators vegas.

    The bladder was added to pressurized head tanks to prevent water logging of the tanks. That was the only difference between bladder and...
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    An AHU manufacturer's engineer said in a speech...

    An AHU manufacturer's engineer said in a speech he made "my AHU fan will do exactly what I say until you hook your duct to it". That is a true statement.
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    The best orientation of a bladder tank depends on...

    The best orientation of a bladder tank depends on where the bladder is located. The air cushion should be at the top. It is true that in commercial applications the tanks are located at the...
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    Your point about words is a good one. I'm...

    Your point about words is a good one. I'm convinced I'm using the wrong words but haven't thought of a better way to say it.
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    BNME8EZ, for what it's worth I'm not sold on...

    BNME8EZ, for what it's worth I'm not sold on certified residential air balance because there isn't much you can do to vary airflows at the blower maximum speed which is where certified air balance is...
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    I think we are saying the same thing in different...

    I think we are saying the same thing in different words. The pressure dropping is what creates the "void" (For the lack of a better word) that allows the refrigerant to form gas pockets. If the...
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    The expansion tank location is OK. Deaerators...

    The expansion tank location is OK. Deaerators have to be above on steam systems.
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    Doing what I do that has never been something I...

    Doing what I do that has never been something I ran into. Correct me if I'm wrong but the bubbles appear because the liquid is colder than normal and has contracted to the point that there is room...
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    There are a lot of guys like you here BBeerme...

    There are a lot of guys like you here BBeerme that have earned the respect of all here. I don't know how much you have forgot but your memory looks good to me. I'm addicted to this site because the...
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    I may have been the first T&B guy here hvacker...

    I may have been the first T&B guy here hvacker and the T&B forum was started not long after I arrived. When I first started posting T&B related things here there was a lot of push back because what I...
  23. I also have both and select them in each case...

    I also have both and select them in each case depending on the application. If all I want is to be close the click is good but to be on the money the digital is used.
  24. Send me an email and I will suggest a possible...

    Send me an email and I will suggest a possible source.
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    A lot of good information given. They are...

    A lot of good information given. They are dragging their feet so far.
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    It's good to see so many folks here having fun...

    It's good to see so many folks here having fun with themselves and sharing the fun. Admitting we are not perfect is a step toward perfection even though none of us will ever get there.
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    Moving air takes more energy than building static...

    Moving air takes more energy than building static pressure. If any motor is running at it's max speed and the system static pressure increases the current draw of the motor decreases because the CFM...
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    I've been driving for 64 years and left my lights...

    I've been driving for 64 years and left my lights on the other day and killed the battery. I called myself a lot of names including DSOB but need to come up with some other descriptive names because...
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    This discussion has been a pleasure Ken because...

    This discussion has been a pleasure Ken because we are discussing the subject. We don't always have to agree with each other on this site because we all learn more by not agreeing than if we always...
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    Your points are valid kdean. My frustration with...

    Your points are valid kdean. My frustration with this subject on this site is there are folks that swear by static pressure measurements and get really angry when I tried to warn them about the...
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    Go to the Titus catalog and select what you want...

    Go to the Titus catalog and select what you want based on CFM, throw and etc.
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    Please understand kdean as a certified balancer I...

    Please understand kdean as a certified balancer I couldn't simply take a single reading no matter what it was and draw a conclusion about system performance. The problem I see is most HVAC guys have...
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    Pitot traverse if you have a spot. The NEBB...

    Pitot traverse if you have a spot. The NEBB manual is accessible on line and it tells you static pressure is the worst way to try to determine airflow.
    If you need to measure airflow you need to get...
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    Static Pressure Frustration

    Until recently I couldn't understand why there was such a misunderstanding concerning measured static pressures in an air system. I did some research and found that there are a lot of "tutorials"...
  35. Thread: USMC

    by WAYNE3298
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    Happy birthday!!! My best friends 3 sons were...

    Happy birthday!!!

    My best friends 3 sons were jarheads and was he ever proud. I was proud of them also.
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    Yes Poodle unless I was allowed to fix it. ...

    Yes Poodle unless I was allowed to fix it.

    Years ago I did a lot of car work. You would be surprised at how many people wanted me to rig a car up so they could sell it. The same people would bring...
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    I follow your logic Poodle but I couldn't just...

    I follow your logic Poodle but I couldn't just make something work to sell that I knew needed repaired unless everyone involved including the buyer was aware of the situation.
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    If he did for me what he has done for you I would...

    If he did for me what he has done for you I would fix it and eat the cost. I would also tell him we are friends so I fixed the problem because I don't do cover ups. If you need anything I'm your...
  39. I saw the same trend R123.

    I saw the same trend R123.
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    I'll say it again static pressure measurements...

    I'll say it again static pressure measurements are not reliable. You didn't specify what static pressure you measured or where. Did you include the filters and what size are the filters? Four or even...
  41. If you are not a ME they need to contract with...

    If you are not a ME they need to contract with one. There are several things questionable about what they are doing. For HVAC purposes they shouldn't need water colder than 42F. If they do an...
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    Post #24 looks like anger to me. If it is...

    Post #24 looks like anger to me. If it is frustration you don't need that either. What benefit is there in frustration? I am old guy and have been there. Put a time limit on all your negative...
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    Get over your anger Frosty and the quicker the...

    Get over your anger Frosty and the quicker the better. I don't mean pretend you're over it I mean forget everything about that job that is negative and remember the good especially where you learned....
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    Get Mathcad and put all your formulas in it. You...

    Get Mathcad and put all your formulas in it. You could use excel.
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    NEVER NEVER NEVER DOUBT YOUR OWN ABILITY!!!!...

    NEVER NEVER NEVER DOUBT YOUR OWN ABILITY!!!! Confidence in yourself is paramount. Recognize your shortcomings but always with the knowledge you can and will fix them. Figure out what you need to do...
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    I was fired 3 times because I refused to stroke...

    I was fired 3 times because I refused to stroke anyone that got out of line either professional or personally. To put it bluntly it was always my mouth. I still don't regret telling the unembellished...
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    I wish you hadn't posted that JayMan7. It hit me...

    I wish you hadn't posted that JayMan7. It hit me I have taken thousands of temperature readings that are wrong big time.

    Actually I loved that post. It was time for a good laugh.
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    Being good at what you do doesn't always bring...

    Being good at what you do doesn't always bring respect. Sometimes you are resented. It's not always easy to tell but you should try.
  49. We need a lot more information. Why a total of 80...

    We need a lot more information. Why a total of 80 tons and not 60 tons? How many AHU'S and what are they designed for? Will both 40 ton chillers be operated at the same time?
    There are more...
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    Years ago a professor said in his class that...

    Years ago a professor said in his class that farmers found out if they built their fence under the power lines that they could get free electrical power from the fence. He said for that reason the...
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