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  1. #1
    Join Date
    Feb 2011
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    Flow Cross Backwards

    What would be the affect of a flow cross on a VAV supply or exhaust box installed in the opposite direction of airflow? Would the cfm readings,differential pressure readings be way off? I came across an exhaust vav installed backwards.

  2. #2
    Join Date
    Jun 2010
    Philadelphia PA
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    with the small intake and larger discharge ( this is VAV and not a VVT damper) how would that be possible?
    You have got to learn from other people's mistakes! Because God knows you don't live long enough to make them all yourself !!!!!!!!

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