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How do i uninstall my old honeywell mercury thermostat

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There are three parts to a T87F thermostat. Outer ring, thermostat body, and base mount. Remove the snap on ring that goes around the dial. Remove three screws from the thermostat that mount it to its base. Remove the thermostat. Disconnect and record what screws each wire attaches to. Remove the screws holding the base to the wall.

Posted on Jul 12, 2008

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