Hvac Thermostat Wiring Diagrams. These two connections will ensure that there is power to the thermostat that you are. C wire connects to c terminal common 24v power with the c wire.
Yellow the yellow wire connects to your compressor. See electrical wiring section page 10 to complete furnace installation. Nordyne hvac wiring diagrams schematics in furnace diagram in e2eb 015ha.
Here are the wires in 4 wire thermostats with terminal codes and color codes.
S indoor and outdoor wired sensors. Your system likely only has one transformer as most typical residential systems only use a single transformer for. In the honeywell t87f thermostat series the single pole double throw switch makes closes one set of contacts when the temperature falls to turn on the heating appliance. C is known as the common terminal.