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-   -   How to install prog. Thermostat (https://www.askmehelpdesk.com/showthread.php?t=526224)

  • Nov 15, 2010, 06:29 PM
    reform
    How to install prog. Thermostat
    New prog. Thermo... has 2 black wires... existing has 4 2 black 2 red. How to connect
  • Nov 15, 2010, 06:35 PM
    ballengerb1

    What brand and model is your new stat and where do you live, also type of furnace or boiler

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