Basic thermostat types. 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.
Honeywell T87k Thermostat Wiring Diagram Wiring Diagram
Thermostat wiring diagram. The basic heat ac system thermostat typically utilizes only 5 terminals. C 24 vac common you might see blue purple or brown typically used for this wire. The table above provides a more complete list of honeywell thermostat wiring colors and their uses. Thermostat wiring and wire color chart thermostat wiring colors code. White the white wire is what connects to the auxiliary heat on your system. Yellow the yellow wire connects to your compressor.
Thermostat wiring diagrams thermostat wiring colors and terminals. Heating only thermostat wiring diagrams if you only have a furnace such as a gas. Thermostatic wiring principles by bob scaringe phd pe. Orange this wire connects to your heat pump if you have one. In fact the wiring of a thermostat is quite simple circuitry the confusion arises principally because. The thermostat is the control device that provides a simple user interface with the internal workings of your homes climate control system.
Variety of 4 wire thermostat wiring diagram. Green the green wire connects to the fan. R the r terminal is the power. It reveals the parts of the circuit as streamlined shapes and the power and also signal connections in between the gadgets. But here is a list of the most common wire color mappings as seen in many four wire t stat setups. Color of wire and termination.
Many technicians have great difficulty understanding how to properly wire a thermostat or how to replace a thermostat with a different thermostat. Honeywell thermostat wiring diagram 4 wire examples. Smart thermostats wifi. The diagram below shows how a basic 4 wire thermostat is connected as indicated by the color code chart above. White rodgers shows a slightly different type of wiring diagram that mirrors a ladder logic. It is a red wire and comes from the transformer usually located in the air handler for split systems but you may find the transformer in the condensing unit.
Red now there can be two separate wires for this. 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. A wiring diagram is a streamlined conventional pictorial representation of an electrical circuit.
Gallery of Thermostat Wiring Diagram
