Heater Thermostat Wiring Color Code

Color codes for 24v thermostat wires are divided into two groups.

Heater thermostat wiring color code.

Understanding thermostat wiring colors is the next step. Below is an industry standard thermostat wire color code complete with each wire s function. Each wire connects to a different terminal and is responsible for a different function. The main difference setting each apart is the number of colored wires.

Color of wire and termination. The most common is 18 5 5 strand 18 gauge. Lack of standards makes this interesting. Tuned the targeting for 4 wire thermostat wiring color code removed ad code and added tags.

Your best bet is to see the manufacturer s documentation both thermostat and hvac. There are a variety of thermostat wire types. Hvac systems with more functions need more wires to communicate to and from the thermostat. The white wire connects to your heat.

Types of thermostat wire. R the r terminal is the power. 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. G and w which are connected to r rc g and w on the thermostat.

References for 4 wire thermostat wiring color code. From the looks of your wiring and if they went by the normal wire color code of how heat pump wires should be wired then you should be able to get your thermostat wired correctly. The yellow wire connects to your. Here is the industry standard thermostat wire color code used for most systems.

The thermostat wiring color code guide from wi fi thermostat reviews. The thermostat controls gas heater and separate a c unit so i believe c is wired at the fan relay. To install your unit you ll need to connect the correct wires to the terminals on the back of your new thermostat. How to wire a thermostat.

While there isn t an official standard for thermostat circuit wiring colors there is a general pattern. Thermostat signals and color code. The 5 strands of wire provide enough functions for the modern. We give a summary tables of both traditional and current thermostat wire color code keys above the 5 universal base colors for thermostat wires which are in order of frequency of use red white green yellow and black.