Search Results - HVAC-Talk: Heating, Air & Refrigeration Discussion

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  1. It strongly depends on the area economy, income...

    It strongly depends on the area economy, income level and the dominant occupation. Most people are poor in one of the two ways. There are two resources we value. Time and money. There are those who...
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    What about ordinary vs mylar wrap on for roof top...

    What about ordinary vs mylar wrap on for roof top airhandlers? The conduction is all about the temperature difference between two surfaces. So, a reflective wrap on a panels to reduce solar pickup on...
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    voltage = pressure current = flow rate A...

    voltage = pressure
    current = flow rate

    A "normal" restriction behaves like a resistor. Amount of fluid that pushes through depends on pressure. A spark gap behaves like a relief valve.

    A...
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    Can I Has some marketing efficiency numbers???...

    Can I Has some marketing efficiency numbers??? What I have here is my best understanding of AHRI 210/240. If I got something wrong, let me know. I swear that document was written by sales engineers. ...
  5. And this is reason 87754 why you should not use...

    And this is reason 87754 why you should not use hazardous flammable refrigerants such as Enviro-Safe or Frost 22a.

    This type of things can happen in AHU too and when a line shorts to copper,...
  6. Another thing.... To have ASHRAE A1 rating, the...

    Another thing.... To have ASHRAE A1 rating, the refrigerant must remain non-flammable over all sorts of production and field mishaps, including such thing as a blend getting charged entirely by...
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    If you use the common three speed tap PSC, it can...

    If you use the common three speed tap PSC, it can cause horrible things like not doing well in AHRI lab test conditions.(sarcasm).

    X13 was designed to let existing systems meet the 13 SEER mandate...
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    You completely missed my point. I am saying that...

    You completely missed my point. I am saying that I think it's the same guy behind star882 and NiHaoMike user names.
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    Could very well be design flaws too. To maintain...

    Could very well be design flaws too. To maintain the same CFM, a ~40% gain in pressure takes double the horsepower. A proper ECM should hold the same CFM all the way up to the rated horsepower and...
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    http://i.imgur.com/iC0Daib.jpg

    http://i.imgur.com/iC0Daib.jpg
  11. Thread: Homeowner

    by ICanHas
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    Doubtful.

    Doubtful.
  12. Replies
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    Pics? Yep. This guy rebuilds compressors...

    Pics?


    Yep. This guy rebuilds compressors and if you read his other posts, I'm confident he knows what he's talking about.

    In the past, people used CFC-11 to wash tools. It's a potent...
  13. Well then, I guess that means watching videos is...

    Well then, I guess that means watching videos is like watching it with the sound muted to a lot of people unless there's Spanish audio track as well
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    I think you're star882's (...

    I think you're star882's ( http://hvac-talk.com/vbb/member.php?44355-star882 ) alter-ego. You must think I'm completely stupid, or perhaps I'm stupid to even suspect this.
    :rolleyes:

    Just...
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    Ok Star882

    Ok Star882
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    Maybe he meant that if you're HOLDING 1,000 on...

    Maybe he meant that if you're HOLDING 1,000 on blanking. If you blank out and it lingers in 1,000 to 5,000 range, it's moisture and if it keeps going up, it's a leak.
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    Hello Star882.

    Hello Star882.
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    If it's right at the main panel, there's gonna be...

    If it's right at the main panel, there's gonna be lots of damage. If 208 120 is derived from the same service, they're gonna have a black out on things that matter, like computers.
  19. It becomes a problem when people start putting...

    It becomes a problem when people start putting propane blends into their systems and places like Rural King sells DIY illegal Frost 22a gas. It's a booby trap for the next person to touch the...
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    You use Teflon if you were handling R-123 as that...

    You use Teflon if you were handling R-123 as that stuff is nasty on just about every rubber, but vinyl hose works good for vacuum and you can trim it to whatever length you want. Short as practical...
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    How are you measuring the pressures? You have to...

    How are you measuring the pressures? You have to measure them at the same time using gauges that are known to be close together (i.e. not with one having -3% error and other with +3% error) or you...
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    The reason for rating in inches of mercury is for...

    The reason for rating in inches of mercury is for physical strength, so it doesn't crush in. A 10" rated hose is only rated for 5 psi inwards. A 30" rated one would be rated for inside running at 15...
  23. I should have remained more chill. I think I was...

    I should have remained more chill. I think I was wasting time arguing with you over hydrocarbon, fan motor etc :censored:
  24. It is not SNAP approved as R22 replacement. It's...

    It is not SNAP approved as R22 replacement. It's unethical and misleading to claim that this thing is an R22 replacement.

    Just had to make this using some pictures on the internet on the...
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    When you get it working, are you converting the...

    When you get it working, are you converting the spare room in your house into a walk-in?
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