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Remove and Replace the old thermostat
To install the thermostat properly, please follow these step by step
instructions. If you are unsure about any of these steps, call a qualified
technician for assistance.
• Assemble tools: Flat blade screwdriver, wire cutters, wire strippers and
phone camera.
• Make sure your Heater/Air Conditioner is working properly before
beginning installation of the thermostat.
• Carefully unpack the thermostat. Save the screws, any brackets, and
instructions.
• Turn off the power to the Heating/Air Conditioning system at the main
fuse panel. Most residential systems have a separate breaker for
disconnecting power to the furnace.
• Remove the cover of the old thermostat. If it does not come off easily,
check for screws.
• Loosen the screws holding the thermostat base or subbase to the wall
and lift away.
• If you have a smart phone handy, take a photo of the wiring for future
reference.
• Disconnect the wires from the old thermostat. Tape the ends of the wires
as you disconnect them, and mark them with the letter of the terminal for
easy reconnection to the new thermostat.
• Keep the old thermostat for reference purposes, until your new
thermostat is functioning properly.
Installation Instructions
