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    amejk's Avatar
    amejk Posts: 8, Reputation: 1
    New Member
    		  
    #1

    Dec 31, 2007, 09:44 AM
    Upgrading thermostat (Hunter) w/gas furnace
    Friends,

    I can find plenty on how to hook up a new thermostat with a heat pump, but not for a gas furnace/electric a/c (Carrier).

    My old thermostat has:

    R = Red
    Y/Y2 = Yellow
    G = Green
    C = Black
    W/W1 = White

    Blue, Brown and Orange are not used

    Now with that in mind, my Hunter has the following letters

    G
    Rc
    Rc1
    Rh
    Y/O
    W/B
    Y1

    What = What?

    Did I get the wrong thermostat?

    Thanks,
    Eric
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #2

    Dec 31, 2007, 10:39 AM
    Provide a model # of the stat or a link. Hunter manuals are here:

    New Page 1

    Looking at the manual for the 44668 or 44660. These are combo conventional/HP stats. The system selector needs to be in the right place. Don't know if it's your model.

    Rc, Rc1 and Rh get jumpered and become R
    (Rc and Rh accommodates separate transformers for heat and cool)
    Y1 doesn't get connected
    amejk's Avatar
    amejk Posts: 8, Reputation: 1
    New Member
    		  
    #3

    Dec 31, 2007, 02:28 PM
    KISS,

    Yes, it is the 44660. So RC1 and RH together = R? What about the Black Wire (that was C)?

    Thanks,
    Eric


    Quote Originally Posted by KeepItSimpleStupid
    Provide a model # of the stat or a link. Hunter manuals are here:

    New Page 1

    Looking at the manual for the 44668 or 44660. These are combo conventional/HP stats. The system selector needs to be in the right place. Don't know if it's your model.

    Rc, Rc1 and Rh get jumpered and become R
    (Rc and Rh accomodates separate transformers for heat and cool)
    Y1 doesn't get connected
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #4

    Dec 31, 2007, 05:09 PM
    Yep KISS gave you some good directions. Jumpering the two reds into one unless you have two transformers and most do not. C is transformer common.
    amejk's Avatar
    amejk Posts: 8, Reputation: 1
    New Member
    		  
    #5

    Dec 31, 2007, 05:15 PM
    Quote Originally Posted by ballengerb1
    Yep KISS gave you some good directions. Jumpering the two reds into one unless you have two transformers and most do not. C is transformer common.

    ?? No where in the Instructions/Diagrams does it show where common goes. THis model does use batteries for power, is it not used?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #6

    Dec 31, 2007, 07:01 PM
    Rc gets jumped to Rc1 which gets jumped to Rh. The triple becomes R.

    The new thermostat can be "power stealing" and therefore "C" is not required. If it uses batteries for power, then "C" is not required. Personally, I couldn't be bothered with batteries. Better yet, find a better stat. Look at Home | iaqsource.com - Aprilaire, Honeywell, Trion Air Bear, Bryant, Carrier, Trane Filters and IAQ products for some options.

    Between R and C is 24 VAC at all times. Just mark black as "C" and cap with a small wirenut.
    amejk's Avatar
    amejk Posts: 8, Reputation: 1
    New Member
    		  
    #7

    Jan 1, 2008, 10:06 AM
    K.I.S.S.

    Thanks so much!

    Eric

    Quote Originally Posted by KeepItSimpleStupid
    Rc gets jumped to Rc1 which gets jumped to Rh. The triple becomes R.

    The new thermostat can be "power stealing" and therefore "C" is not required. If it uses batteries for power, then "C" is not required. Personally, I couldn't be bothered with batteries. Better yet, find a better stat. Look at Home | iaqsource.com - Aprilaire, Honeywell, Trion Air Bear, Bryant, Carrier, Trane Filters and IAQ products for some options.

    Between R and C is 24 VAC at all times. Just mark black as "C" and cap with a small wirenut.
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