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  1. #1
    Join Date
    Aug 2007
    Posts
    175

    I have a TWO STAGE A/C, but not sure if it operates as a TWO STAGE...

    So, I have the following setup:
    Lennox XC 21 Air Conditioner.
    Lennox CBX32MV Variable Speed, Multi-position Air Handler
    Harmony III Zoning----Two Zones.
    How can I tell if I am getting the benefits of the Two Zone system? Should the stat contain certain wires? Is this done at the zoning board? Thank you!

    FWIW, the house had a one zone system prior to having this new system installed. Thanks!

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,104
    That zone panel controls staging. or at least it should be set to do so.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,048
    You also should notice significant change in indoor air flow between stages.

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