R Wire Thermostat Wiring Diagram

Variety of dometic rv thermostat wiring diagram.

R wire thermostat wiring diagram. The blue brown or b lack wires also referred to as the c wire this wire connects the low side of the output of the low voltage power to the t stat. Terminal r or terminal rh for the red wire. This terminal is for a common connection from the control transformer that will provide steady 24 volt power between terminal r and c to power the thermostat itself. Do not jumper any r wires.

Heat only 2 wire boilerfurnace installations for ecobee thermostats. To install your unit youll need to connect the correct wires to the terminals on the back of your new thermostat. In conventional heating which is oil or gas the furnace controls the fan so only r is connected to w heat. If you are replacing an old thermostat with a new digital thermostat the electronics in these units may need yet another wire for a terminal labeled c.

Thermostat wiring and wire color chart thermostat wiring colors code. Ecobee3 lite wiring diagrams. Its there so you can supply power to the heating and cooling switches with a single wire which is usually red. If you only have one r wire that includes r rc and rh youll insert it into the rc terminal on your ecobee.

It shows the components of the circuit as streamlined forms and the power as well as signal links in between the tools. Understanding thermostat wiring colors is the next step. For cooling the furnace usually selects the high speed of the blower. Smartthermostat with voice control and ecobee4 wiring diagrams.

If you dont have an rc wire rh serves as both the heating and cooling power wire. Here is the industry standard thermostat wire color code used for most systems. The yellow wire connects to your compressor. Youll probably see a thermostat jumper wire connecting the rc and rh terminals.

A wiring diagram is a simplified standard pictorial representation of an electric circuit. Color of wire and termination. 3 wire heat only thermostat r g w installing your ecobee with a boiler and ac. R the r terminal is the power.

In air conditioning mode the thermostat controls the fan so g fan is also connected to r. Installing your ecobee thermostat with the power extender kit no c wire ecobee3 wiring diagrams. The red wire the red wire r rc rh connects the high side of the output of the control transformer to the t stat. The wiring for your honeywell thermostat depends on the functions of your heating and cooling system.

The white wire connects to your heat. Note that in our case we had to use the green wire for c as discussed below because there were only four wires coming from. 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.