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-   -   Installing Honeywell RTH230B, what to do with blue (B) Wire (https://www.askmehelpdesk.com/showthread.php?t=15460)

  • Nov 29, 2005, 08:16 PM
    alli
    Installing Honeywell RTH230B, what to do with blue (B) Wire
    I am trying to install of Honeywell RTH230B thermostat. I removed the old Lux mercury thermostat and their were five wires Rh, W, Y, G, and B (blue).
    The thermostat has place for all of the wires except the B(blue) wire. Do I need a different thermostat or can the B wire be put in the Rc space or not used at all?

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