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  1. #14
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,914
    Quote Originally Posted by Frederick_Tech View Post
    Best zoning system Ive ever installed or worked on is the carrier Infinity. Using all Infinity equipment and carrier dampers as well. The system lets you set air flow limits for each zones and runs accordingly. Best of all. NO BYPASS IS USED.
    Same with the AS AcculinkII/Trane ComfortlinkII communicating zoning system, only it uses an actual pressure transducer to sense the duct pressure.

    AS/Trane actually had a fully modulating zoning system well before the Carrier infinity, but until the communicating system came out a couple of years ago, It was amazingly complex to design, and install. You needed a computer program just to tell you what all of the dip switches needed to be set to, and the number of dip switches usually was >100.
    If more government is the answer, then it's a really stupid question.

  2. #15
    Join Date
    Jun 2001
    Location
    Moore, Oklahoma, United States
    Posts
    4,292
    Are these high end zoned systems really moe cost effective than just having 2 smaller standard systems? Do they really use less energy over the course of a year?

  3. #16
    Join Date
    Jan 2013
    Location
    California
    Posts
    87
    Quote Originally Posted by Claugesy View Post
    I would want to say that this is a job done by an average installer but i sadly know if that was the case the covers wouldnt be on and missing.
    Guilty.

  4. #17
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,914
    Quote Originally Posted by 54regcab View Post
    Are these high end zoned systems really moe cost effective than just having 2 smaller standard systems? Do they really use less energy over the course of a year?
    This particular system is a 2 ton system serving a master bedroom suite, 3 bedrooms, and a hall bath.
    The master suite is on the west side of that end of the house, and the 3 bedrooms are on the east side.
    The zoning was more to deal with load/usage diversity than anything.(Read as moma bear wants it 70 at night when she sleeps, but papa bear doesn't want the 3 kids getting to cozy and thinking they will stay until their 30, so that side is never set below 76.)
    The house has 2 other complete systems in it that are not zoned.
    If more government is the answer, then it's a really stupid question.

  5. #18
    Join Date
    Jun 2004
    Location
    Alabama
    Posts
    353
    Did you use a bypass damper?
    We shall never prevent the abuse of power if we are not
    prepared to limit power in a way which occasionally may
    prevent its use for desirable purposes.


    F.A. Hayek

  6. #19
    Join Date
    Jul 2012
    Location
    Central TX
    Posts
    406
    Quote Originally Posted by 54regcab View Post
    Are these high end zoned systems really moe cost effective than just having 2 smaller standard systems? Do they really use less energy over the course of a year?
    Not every house or situation is a good match but many are. Those 2 story houses that were built with 1 system are a perfect match!! We have replaced existing zone systems, and have converted 2 system houses to Trane's zoning with mostly 20i's, every single one of the customers have been ecstatic about how comfortable the entire house is.

  7. #20
    Join Date
    Jul 2012
    Location
    Central TX
    Posts
    406
    Quote Originally Posted by dannyp19 View Post
    Did you use a bypass damper?
    With multi-stage equipment, Trane's modulating dampers, and proper zoning, a bypass damper is not needed. All of our zoning is done with no bypasses.

  8. #21
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,914
    Quote Originally Posted by dannyp19 View Post
    Did you use a bypass damper?
    Usually not, and certainly not with the AS/Trane zoning system, but this particular system has a bypass.

    I haven't looked at the final version of ACCA manual Zr, but following the draft version of it that I had, the design called for a bypass, so I installed one.

    The supply duct to the bypass has a balance damper, and Manual Zr had/has a procedure for adjusting the damper to limit the maximum amount of air that can be bypassed under "worst case" conditions, and for adjusting the bypass damper itself.
    The only time the bypass comes into play is if the master bedroom thermostat calls for 2nd stage cooling, AND the hall bedroom zone isn't calling, which happens for maybe 15-20 minutes a night when they drop the master bedroom temperature down to what moma wants to sleep in.
    The other zone can't call for 2nd stage.
    If more government is the answer, then it's a really stupid question.

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