Thermostat Wiring Diagram - Carrier Infinity

Take a photo of the old wiring for reference. Label the wires if they are not color-coded.

In a zoned setup, the thermostat connects to the Zone Board via the ABCD bus, which then distributes signals to individual dampers and sensors. Important Installation Tips Carrier Infinity Wiring Basics Carrier Infinity Thermostat Wiring Diagram

Turn off the furnace/air handler breaker and the outdoor unit disconnect. Wait 30 seconds for capacitors to discharge. Take a photo of the old wiring for reference