Its there so you can supply power to the heating and cooling switches with a single wire which is usually red. Thermostat wiring color code decoded.
Thermostat Wiring Colors Code Easy Hvac Wire Color Details
Honeywell 4 wire thermostat wiring color code. Youll probably see a thermostat jumper wire connecting the rc and rh terminals. Here is the industry standard thermostat wire color code used for most systems. R the r terminal is the power. This one uses the green wire as the c wire instead of the g fan wire. Understanding thermostat wiring colors is the next step. Both examples of how to wire a honeywell thermostat with 4 wires are discussed below.
Using a pocket knife trim off 14 of the colored coating to expose the wire. Rv honeywell thermostat upgrade duration. Wire helps transmit data over a longer distance. Wall plate for a 4 wire smart thermostat installation. The white wire connects to your heat. 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.
Color codes for 24v thermostat wires are divided into two groups. How to wire a honeywell thermostat with 4 wires. Honeywell thermostat wiring color code. Over a long distance the signals can become to weak to get a reading. To install your unit youll need to connect the correct wires to the terminals on the back of your new thermostat. Thermostat wiring and wire color chart thermostat wiring colors code.
The larger 18 ga. Some have the common c wire while others do not. Heat pump thermostat wire color code duration. Color of wire and termination. In the installations weve worked with the most common wire color code guide for a four wire t stat are as follows. The wiring for your honeywell thermostat depends on the functions of your heating and cooling system.
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. The yellow wire connects to your. A thermostat wire uses low voltage signals to transfer data. For all other t stat terminals and in fact sometimes even for the above mentioned common color assignments the exact purpose of a wire is often not clear.
Gallery of Honeywell 4 Wire Thermostat Wiring Color Code
