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    tomsomm's Avatar
    tomsomm Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Dec 13, 2007, 11:19 AM
    Rheem criterion II gas furnace
    Have a rheem furnace and when it turns on it blows real hard something I read said it has a three or four speed motor just wondering if some one could help me change the wires to lower the speed of the motor
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Dec 13, 2007, 12:51 PM
    The furnace blower motor speed should be set by a professional. They use a air volume tool to make sure enough CFM gets across the heat exchanger so the exchanger does not fail or other safety devices.
    tomsomm's Avatar
    tomsomm Posts: 2, Reputation: 1
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    #3

    Dec 13, 2007, 02:21 PM
    Quote Originally Posted by tomsomm
    have a rheem furnace and when it turns on it blows real hard some thing i read said it has a three or four speed motor just wondering if some one could help me change the wires to lower the speed of the motor
    Thanks hvac1000 but when I sit in my kitchen it blows the napkins off the table and in my last house the air never came out that fast I'm sure the CFM'S are to high
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Dec 13, 2007, 02:27 PM
    I am sure the CFM;s are to high also. But the speed needs to be set properly especiall if it is a 80 to 90 % model.
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