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  1. #14
    Join Date
    Mar 2002
    Location
    Richmond, Virginia
    Posts
    4,264
    Post Likes
    There is nothing more frightful than ignorance in action....Mark Twain

  2. #15
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,815
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    Question MFG & Model #s

    Originally posted by kcroat
    Does anyone have an estimate

    (hopefully based on some data)

    of the loss of efficiency that occurs if you put the condensing unit on the roof in full sun?
    ACTUAL data based on condenser air temperatures
    can be provided with
    a KNOWN manufacturer and model numbers.
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

  3. #16
    Join Date
    Aug 2005
    Posts
    20
    Post Likes
    MrBillPro made a statement earlier about a system where the condenser was inside the attic with the hot air vented to the outside. I cannot comment on the efficiency claims but can verify this system exist. It is found mostly in commercial applications. It is referred as a "Single Package Horizonal Unit". There is actually duct work for the condenser seperate from the conditioned space ductwork. A description and a picture of this design can be found in the following book:

    Principles of Air Conditioning 5th edition
    V. Paul Lang
    Unit 18 Page 303

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