Wiring Diagram For Thermostat. By the use of an adjustable set point the job of the thermostat is to turn on either the heating or cooling system to maintain the desired room temperature in the home and to turn off the system when the desired temperature is achieved. Each component ought to be placed and connected with other parts in particular manner. The orange wire connects to terminal o on your thermostat.
The rh wire connects to the heating system. It terminates in your outdoor condenser for reversing valve operation from hot to cold. The diagram below shows how a basic 4 wire thermostat is connected as indicated by the color code chart above. The yellow wire connects to your compressor.
Each component ought to be placed and connected with other parts in particular manner.
Heating only thermostat wiring diagrams if you only have a furnace such as a gas. S indoor and outdoor wired sensors. Thermostat wire and electrical. The orange wire only applies to homeowners with an air source heat pump. This wire connects to your heat pump if applicable.