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    yahyaronna's Avatar
    yahyaronna Posts: 2, Reputation: 1
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    #1

    Jun 3, 2012, 04:54 AM
    the use of primary variable speed pumps
    I used to use group of ( constant speed ) primary and ( variable speed ) secondary pumps for air cooled or water cooled chilled water system.
    when I can use only variable primary speed pumps instead of this group.
    and what deferences on control in both systems.
    yahyaronna's Avatar
    yahyaronna Posts: 2, Reputation: 1
    New Member
    		  
    #2

    Jun 3, 2012, 05:01 AM
    What if I installed the balancing valve on the supply line instead of return line
    What if I installed the balancing valve on the supply line instead of return line?
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