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    howiek54's Avatar
    howiek54 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 28, 2013, 07:14 PM
    Wiring for the Nest.
    I have just received the Nest thermostat for Christmas and the existing thermostat is part of the utility PeakSave program in Acton, Ontario.

    When I looked at the thermostat wiring there is only 4 wires, one of which is connected to the K terminal. Tho others are connected to the R, W & C

    Tracing the wire from the K terminal on the existing Honeywell thermostat, it goes to a HoneywellTHP9045A1007 add-on that apparently splits the G & Y signal. Is this the same situation with everyone else who has posted here?

    Thanks for your replies
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
    Ultra Member
    		  
    #2

    Dec 29, 2013, 05:15 PM
    Here's something I found. Maybe it will help. Honeywell THP9045A1023 Prestigeā„¢ WireSaver Module

    BTW, Good luck with your Nest. I don't hear a lot of good reports about them. I believe simpler is better.
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