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    wh3355's Avatar
    wh3355 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Dec 9, 2009, 04:20 PM
    Wiring trane thermostat tcont900 to 5 wire
    I have a new Trane t900cont thermostat (3 wire). How do I wire it to an exsiting 5 wire that comes out of the current socket? My ac usint is a Trane XR15 with Trane AHU 4TEE MODEL
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #2

    Dec 9, 2009, 08:43 PM

    If the thermostat has only 3 connections, it requires the matching equipment interface module.
    wh3355's Avatar
    wh3355 Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Dec 10, 2009, 03:08 PM

    What is the name and model of the interface equipment? Thanks
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Dec 10, 2009, 03:14 PM
    All sorted out here

    Trane T-stat: 900 will not work with XL15i??? - Heating & Air Conditioning Forum - GardenWeb

    BUY the Honeywell
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