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  1. #1
    Join Date
    Jul 2016
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    Installing new wifi stat

    I'm trying to upgrade my thermostat to a wifi one. I do no have a extra wire for the "c" wire and also the furnace I have has a "t" terminal on there.

    Any ideas and would it be possible to install?

    The Furnace is a Lennox pulse, 10-15 ish years old.


    any help would be great, thanksName:  20160722_180810_resized.jpg
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  2. #2
    Join Date
    Apr 2012
    Location
    Texas
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    It appears that the T wire is the ground for the condenser contactor.
    It may also serve as a ground if your thermostat needs to be powered but you need another wire.
    You can always go the battery route.
    Economy - Quality - Speed <---- pick two

  3. #3
    Join Date
    Jul 2016
    Posts
    215
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    Quote Originally Posted by Dennis.Moore View Post
    It appears that the T wire is the ground for the condenser contactor.
    It may also serve as a ground if your thermostat needs to be powered but you need another wire.
    You can always go the battery route.
    Battery route wont work. T is at the ah it appears. Only 4 wires for the stat. Going to have to use an add a wire to make it work.

    Sent from my SM-G900P using Tapatalk

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