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    Sparkeysom's Avatar
    Sparkeysom Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 13, 2009, 04:27 AM
    Chiller pumps
    What are the difference between primay and secondary pumps ?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Mar 13, 2009, 08:45 AM
    This pretty much says it all.

    http://www.taylor-engineering.com/do...ems-Taylor.pdf

    BTW everything today has gone variable speed with ramp ups programed
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