Wiring Diagram For Eburn Thermostat. In the diagrams below the dotted lines indicate optional wires that may not be applicable to your specific hvac system. Yellow the yellow wire connects to your compressor.
S indoor and outdoor wired sensors y compressor stage 1 cooling y2 compressor stage 2 cooling g fan c common. See the diagram below for what each wire controls on your system. The basic heat ac system thermostat typically utilizes only 5 terminals.
Thermostat wiring for dummies.
If you need additional symbols search them on the left symbol library. The diagram here shows how a basic 4 wire thermostat is connected as indicated by the color code chart below. Residential thermostat wiring diagram. Rc red wire power 24 vac rh or 4 red wire jumpered power 24 vac w white wire for heating enable y yellow wire for cooling enable g green wire controls fan on auto.