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Thread: Zoning

  1. #14
    Join Date
    Nov 2005
    Location
    Texas
    Posts
    1,628

    Plumb the by-pass?

    Is the house slab or pier and beam? If pier and beam, you
    may be able to return thru wall studs, but would require
    some investigation. Also, if not getting tied to total
    system, I like EWC at http://www.ewccontrols.com/

    Regards.........

  2. #15
    Join Date
    Dec 2005
    Location
    Memphis, TN.
    Posts
    823
    Been doing some investigating in my mechanical closet (glorified broom closet) and I think I can run a square duct from the attic to the return plenum in the closet, What is the usual cfm rating for the bypass?

    I am going back and forth but leaning towards a multispeed blower and using the fanhandler; I think it has better control over the system when nothing is calling and you can run the blower down as low as say 500 cfm...any opinions?


    Good stuff here guys, keep it comming - I really appreciate it!


    thanks,

    Citywide.
    "I don't care what you could get it off the net for, they wont warranty it and neither will I"!

    And if you don't like my "flat rate up front pricing" try and negotiate the price on that big mac you just bought pricing is exactly the same method!

  3. #16
    Originally posted by citywide service
    Been doing some investigating in my mechanical closet (glorified broom closet) and I think I can run a square duct from the attic to the return plenum in the closet, What is the usual cfm rating for the bypass?

    I am going back and forth but leaning towards a multispeed blower and using the fanhandler; I think it has better control over the system when nothing is calling and you can run the blower down as low as say 500 cfm...any opinions?


    Good stuff here guys, keep it comming - I really appreciate it!


    thanks,

    Citywide.
    Just about every question you've asked is in the installation manuals online at Zonex....

    It's been said the only purpose of a By-Pass is to minimize duct noise... We'll partly but a good designed zone system will utilize a capacity controller, and an elctronic By-Pass controller...

    We've got 40 ton systems with 20 zones, 1 zone can call all day. With the proper By-Pass and as stated capcacity control it works smoothly...

    Here's an explanation for the By-Pass




    [Edited by AllTemp on 01-29-2006 at 06:59 PM]
    AllTemp Heating & Cooling

  4. #17
    Join Date
    Dec 2005
    Location
    Memphis, TN.
    Posts
    823
    Excellent reply! thank you very much for the info...am reading it now and getting good ideas already!


    Citywide.
    "I don't care what you could get it off the net for, they wont warranty it and neither will I"!

    And if you don't like my "flat rate up front pricing" try and negotiate the price on that big mac you just bought pricing is exactly the same method!

  5. #18
    First of all you need to zone your havc. A bypass damper is a valve static pressure/motorized air valve that recirculates the extra CFM's comming out of your unit back to your supply plenum. With out a bypass damper you could be blowing high pressure into only one zone making a windy uncomfortable climate when only one zone demands regulation. Please check out Zonematrix.com and xcicontrols.com they have the best customer service and xci's controls are amazing and user friendly. goodluck

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