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  1. Thread: returns

    by jiminator
    Replies
    7
    Views
    839

    I found this thread after doing a search to find...

    I found this thread after doing a search to find more information about "hi-lo" returns. So, I thought I'd revive it and ask a question or two.
    At a recent duct sizing seminar I went to, the...
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    770

    UV Blues...

    Seems I remember that some humidifier manufacturers have changed the make-up of their humidifiers to better withstand UV exposure....Check with the humidifier manufacturer, they would know. Some evap...
  3. Urban Legend?

    I learn SO much here, I really do.....I had been told repeatedly over the years that this "dedicated circuit" thing was critical to stop any possible interference from another device on the same...
  4. Replies
    15
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    4,145

    Shop-Vac

    I once heard an analogy that set me straight on the whole return grille, high-low, winter-summer, placement issue. Take a shop vac, put the hose on the outlet, point it at a desk across the room...
  5. Circuitry?

    My guess is that they require a dedicated circuit for their ERV/HRV so as to remove any chance of electrical interference from another device on the same circuit. Fluorescent light ballasts are...
  6. Replies
    20
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    1,687

    Wright Software

    I use Wrightsoft's stuff. It pretty much does all the work for me. I draw the structure with the cad module that's available and as I do so, other background programs are at work figuring the load...
  7. Replies
    12
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    1,804

    SURE, We can laugh now....

    Shophound wrote: "I once lit off an RTU that I had installed a new heat exchanger into. Forgot about the protective oil coating on the exchanger. Smoked up the real estate office pretty good. I kept...
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    10
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    925

    Carbide

    I've had great success cutting plaster in the past with the carbide grit sawzall blades. There are no teeth on the blade that catch and tear and pull. Instead the blade just sort of grinds its way...
  9. Thread: delta T ?

    by jiminator
    Replies
    28
    Views
    3,974

    Oh Yeah!

    "Ok, I'll take the bait...The dry bulb delta T across the evap coil will be a function of the amount of sensible heat removal from the airstream and the amount of air going across the coil. Now if...
  10. Thread: unico

    by jiminator
    Replies
    9
    Views
    1,099

    Of course!

    Thanks, berad!

    Jim
  11. Replies
    14
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    1,621

    IECC

    "The architect tells me that he can do another calculation with an 80% and see how it comes out."

    Sounds to me like your architect is trying to meet Energy Conservation Codes. Be careful....If he...
  12. Thread: unico

    by jiminator
    Replies
    9
    Views
    1,099

    Indeed, it is great stuff, this Unico. I've...

    Indeed, it is great stuff, this Unico. I've installed dozens of them and I would say, without hesitation, take a class on Unico before you even attempt to install one. It's not like any other system...
  13. Replies
    10
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    1,435

    Whoosh

    Wouldn't reducing from 7" to 5" right at the register boot create a bit of noise? Or at the least, restrict the air flow substantially? My ductilator seems to think so. berad's point about the size...
  14. Replies
    7
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    852

    If you're that worried about it get one of those...

    If you're that worried about it get one of those set back thermostats with an adaptive recovery feature. Honeywell makes some great ones. They'll "learn" during every recovery cycle and will change...
  15. Replies
    2
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    1,257

    No sooner had I posted my humble thread here,...

    No sooner had I posted my humble thread here, when the Realtor mentioned in my first post had "upped the ante" about this oval pipe issue. I got a fax from the builder that states that the realtor...
  16. Thread: Starter box

    by jiminator
    Replies
    9
    Views
    1,111

    Try UEItest.com. They make an Hermetic Compressor...

    Try UEItest.com. They make an Hermetic Compressor Analyzer similar to the one mentioned.
    Regards,
    Jim
  17. Replies
    2
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    1,257

    Here we go..... I'll skip all the gory details...

    Here we go.....
    I'll skip all the gory details and get right to my questions/points...
    I know that the oval duct that my company uses for wall stack is not equivalent to it's corresponding size of...
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