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  1. #1
    Join Date
    Apr 2004
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    Need some help on a 1997 Chocho package rooftop unit. Customer wants new stat,but i can't identify any of the contol wiring at stat. It has a Trane programable one that I'm not up on. It's got several wires on a numbered cicuit board. Does any body have a wiring schematic. Thanks,,, The model of unit is TCD075 with electric heat. It's wired now with a auto change over stat..

  2. #2
    Join Date
    Aug 2003
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    This has all the info you need on these units.

  3. #3
    Join Date
    May 2000
    Indianapolis, IN, USA
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    Unless you go with a stat meant for the Voyager, you'll need the CTI mentioned in that manual traneman gave you the link for.

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