Johnson Controls T9180, Owner'S Manual And Installation Instructions

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Installation Instructions
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.
• Installation tools: Small flat blade screwdriver, wire cutters and wire
strippers.
• 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 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.