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    Dave from OBX's Avatar
    Dave from OBX Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Nov 7, 2013, 05:56 PM
    How to wire a Honeywell RTHL3550 from a Janitrol HPT 18-60
    I need the correct wiring from a Janitrol HPT 18-60 to a Honeywell RTHL3550. I have a heat pump with an emergency heat strip.

    The Janitrol wiring is as follows:
    Y=YELLOW
    G=GREEN
    R=RED
    O=ORANGE
    W2=WHITE
    E=SILVER (GRAY)
    C=BLUE
    Need to know corresponding terminals on the Honeywell
    they are as follows:
    L=
    AUX/E=
    G=
    O/B=
    Y=
    R=
    Rc=
    Thanks,
    Dave from OBX
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
    Ultra Member
    		  
    #2

    Nov 7, 2013, 08:46 PM
    R=Red
    Y=Yellow
    G=Green
    O/B=Orange
    Aux/E=White & Silver

    I'm surprised there is no "C" (common) terminal on the new stat.

    I searched Honeywell's site for an RTHL 3550 without success. Are you sure the model # is correct?
    Dave from OBX's Avatar
    Dave from OBX Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Nov 8, 2013, 07:40 AM
    Quote Originally Posted by Grady White View Post
    R=Red
    Y=Yellow
    G=Green
    O/B=Orange
    Aux/E=White & Silver

    I'm surprised there is no "C" (common) terminal on the new stat.

    I searched Honeywell's site for an RTHL 3550 without success. Are you sure the model # is correct?
    There is no C on the Honeywell. If you Google Honeywell RTHL3550 with no space it will come up. Thanks
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