Thermostat Wire Diagram

Its a thd5 wire honeywell thermostat wiring. The diagram below shows how a basic 4 wire thermostat is connected as indicated by the color code chart above. 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.

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Thermostat wire diagram. Today i want to talk about how simple a thermostat really is how the common and hot wire goes to a transformer how you tie the white wire for the heat strip connect the green wire which controls. Providing stepped down power from a transformer. A basic two wire thermostat can be compared to a simple single pole switch that you will find throughout your home only instead of you turning the switch on and off as required a mechanical or electronic temperature controlled mechanism is the operator of. 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.

Nest diagram wiring nest wiring diagram nest wiring diagram 3rd generation nest wiring diagram combi technology creates a better life and it is true. Back in the olden days thermostats were simple on off devices that didn t need their own continuous power supply. Modern thermostats with wi fi and backlit display by contrast need a steady supply of juice the c wire or common wire enables the continuous flow of 24 vac power to the thermo. Sophisticated gadgets and devices even come to improve your house with technologies one of which is nest thermostat.

Orange this wire connects to your heat pump if you have one. They connect to a two wire thermostat generally a mechanical thermostat with a mercury filled ball connected to a coiled bi metal strip. Honeywell prestige wiring requirements need a minimum of 5 wires and maybe more depending on what features you want to operate humidifier etc the additional 5th wire will be for common. White the white wire is what connects to the auxiliary heat on your system.

Green the green wire connects to the fan. Yellow the yellow wire connects to your compressor. The basic heat a c system thermostat typically utilizes only 5 terminals. Color of wire and termination.

R the r terminal is the power. Red now there can be two separate wires for this. Some programmable thermostats e g. Thermostat wiring and wire color chart thermostat wiring colors code.

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.