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-   -   Baystat 240 to a honeywell rth7500d (https://www.askmehelpdesk.com/showthread.php?t=271633)

  • Oct 20, 2008, 04:08 PM
    mrtims
    baystat 240 to a honeywell rth7500d
    Hi I just purchased a Honeywell rth7500d for my home. I currently have a baystat 240 with a Trane heat pump with strip back up. I have tried to trace the wires and figure witch one goes to the new thermostat but with no luck. My baystat has r t o g y x2 b u w. I drew a diagram of the old wires and marked witch color went where. The Honeywell has c g y o/b rc r w2 e2 l. Can anyone help me figure out witch goes where? Thanks for any help
  • Oct 20, 2008, 07:42 PM
    hvac1000
    1 Attachment(s)
    Quote:
    Originally Posted by mrtims View Post
    Hi I just purchased a Honeywell rth7500d for my home. I currently have a baystat 240 with a Trane heat pump with strip back up. i have tried to trace the wires and figure witch one goes to the new thermostat but with no luck. My baystat has r t o g y x2 b u w. I drew a diagram of the old wires and marked witch color went where. The Honeywell has c g y o/b rc r w2 e2 l. Can anyone help me figure out witch goes where? Thanks for any help

    Here is a old wiring changeover chart that might help.

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