Heating And Cooling Thermostat Wiring Diagram

In depth thermostat wiring guide for homeowners nest thermostat wiring diagram for 2 stage cooling 2 stage heat nest thermostat itself is another generation of cooling and heating apparatus.

Heating and cooling thermostat wiring diagram.

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. Instead c wires help deliver power from the system to the thermostat in case the other wires can t provide enough power. It reveals the components of the circuit as streamlined shapes as well as the power as well as signal connections in between the devices. Heat pumps are different than air conditioners because a heat pump uses the process of refrigeration to heat and cool while an air conditioner uses the process of refrigeration to only cool the central air conditioner will usually be paired with a gas furnace an electric furnace or some other method of heating.

S indoor and outdoor wired sensors. Note some ac systems will have a blue wire with a pink stripe in place of the yellow or y wire. Collection of heating and cooling thermostat wiring diagram. The thermostat is the control device that provides a simple user interface with the internal workings of your homes climate control system.

In this case the power from the transformer in the air conditioning system would go to the thermostat terminal. The rc wire connects to the cooling system. Red wire for rc terminal. The thermostat uses 1 wire to control each of your hvac system s primary functions such as heating cooling fan etc.

This wire connects to your heat pump if applicable. The blue wire on the thermostat is the common or c wire. Air conditioning ac contactor control board 1 this diagram is to be used as reference for the low voltage control wiring of your heating and ac system. This wire may be red without an h attached in some cases.

See the diagram below for what each wire controls on your system. Not all systems have a c wire installed but nest thermostats were engineered to use as little power as possible for their display and internal circuitry so in the. Y compressor stage 1 cooling y2 compressor stage 2 cooling g fan. The common c wire doesn t control heating or cooling.

The rh wire connects to the heating system. A wiring diagram is a streamlined traditional pictorial representation of an electric circuit. Furthermore it should be noted that a jumper can be installed between rc and rh for a heating and cooling system equipped with a single transformer. A transformer for cooling and a transformer for heating.

Always refer to your thermostat or equipment installation guides to verify proper wiring.