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

    Oct 9, 2014, 04:02 PM
    Maple Chase to Robert Shaw Thermostat
    I have a 1996 Maple Chase Thermostat and would like to put in the new Robert Shaw Thermostat. The problem is the new RS Thermostat does not use the Brown, Black & Red wires that were connected to the Maple Chase.
    The maple Case is wired up as follows:
    Brown - C
    Black - L
    Red - R
    Skip - y2
    Yellow - y1
    Skip - e
    Green -G
    White - W2
    Orange - O
    Blue - B
    I don't have the C,L & R on the new Robert Shaw Thermostat. How do wire this up. Thanks George
    bitters's Avatar
    bitters Posts: 348, Reputation: 12
    Full Member
    		  
    #2

    Oct 9, 2014, 04:27 PM
    No R on the new stat? What is the model number of the new stat?
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #3

    Oct 9, 2014, 05:54 PM
    What type of heating system do you have and which Shaw stat did you get?
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
    Ultra Member
    		  
    #4

    Oct 9, 2014, 06:38 PM
    I've never seen a stat without an 'R' terminal.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #5

    Oct 9, 2014, 06:49 PM
    The ones I've installed had two red frequently jumpered
    Heat Pump's Avatar
    Heat Pump Posts: 2, Reputation: 1
    New Member
    		  
    #6

    Oct 10, 2014, 05:14 AM
    The new unit is a Robert Shaw 9620 and I'm running a Rheem Heat pump The old unit is a Maple Chase 9620. I'm returning the thermostat the unit is missing the screw lugs where the R, L, & C wires connect. Other than that it should have been a exact wire hook up as I stated in the first post. I bought the unit from ZORO. Thanks George
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