Standard household wiring diagram for thermostat. Thermostats act as the control hub of your heating and cooling system giving you access and easy control from one central location. Even the most seasoned people who enjoy diy may come across problems with wiring a thermostat. Heck now im not calling anyone a dummy. Thermostat wiring replacement colors terminal letters how it works.
There is no official standard for thermostat wire colors. However these are the most wiring methods used based on my years of experience in the hvac field where i successfully wired a lot of thermostats. Heat pumps are different than air conditioners because a heat pump uses the process of refrigeration to heat and coolwhile 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. It shows the components of the circuit as streamlined forms and the power as well as signal links in between the tools.
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 the switch. Ac service tech llc 164705 views. For instructions on how to wire a thermostat please see how to wire a thermostat page. This guide will explain how to wire a thermostat in your home.
They usually operate at 24v ac power and the source of this control. Bypassing a furnace control board in cooling duration. Thermostat wiring for dummies. The terminals are usually marked r and w.
Variety of dometic rv thermostat wiring diagram. But here is a list of the most common wire color mappings as seen in many four wire t stat setups. Free wiring diagram menu. A wiring diagram is a streamlined standard photographic representation of an electric circuit.
Just take a look at the picture below the. However your connections may seem a little different on the thermostat itself. 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 the diagram shows how the wiring works. C 24 vac common you might see blue purple or brown typically used for this wire.
The main trouble is dealing with those different colored wires knowing which one does what and if that wasnt enough you also have numbers and letters to deal with. Honeywell thermostats available here. With todays programmable thermostats and wi fi thermostats wiring your own system has never been easierhowever it still requires a thorough setup. September 3 2018 december 27 2018 by larry a.
House thermostat wiring diagram. A wiring diagram is a simplified standard pictorial representation of an electric circuit. Thermostat wiring diagrams for heat pumps heat pump thermostat wire diagrams. Inspirational honeywell thermostat wiring diagram for rth 3 4 5 wire.
The table above provides a more complete list of honeywell thermostat wiring colors and their uses.