Lead Wire Thermostat Connection Diagram

Delta connection single voltage.

Lead wire thermostat connection diagram. If the switch is tilted to the right as it would be if the air conditioning were on the current travels through the mercury into the blue wire. Wye connection single voltage. By the use of an adjustable set point the job of the thermostat is to turn on either the heating or cooling system to maintain the desired room temperature in the home and to turn off the system when the desired temperature is achieved. Install one unit 1 3 and.

Wye start delta run or pws connection 12 lead dual voltage. Thermostat wire used for heating and cooling systems is usually 18 gauge solid copper conductor unshielded cable. Always use wiring diagram supplied on motor nameplate. It connects to the pink wire which leads to the bottom wire in the mercury switch.

Five conductor thermostat wire cables will include these colors. 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. Three phase wiring diagrams always use wiring diagram supplied on motor nameplate. Use a 5 conductor thermostat cable for standard thermostat installations.

Szlcd control relay board with the analog thermostat. For two unit installations. Some installers may use 20 awg copper thermostat wire. 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.

It is technically possible use a 2 wire thermostat with a 3 wire zone valve but you need a single pole double throw relay like a fan control relay. Green the green wire connects to the fan. The basic heat a c system thermostat typically utilizes only 5 terminals. But here is a list of the most common wire color mappings as seen in many four wire t stat setups.

The diagram below shows how a basic 4 wire thermostat is connected as indicated by the color code chart above. 22 awg thermostat wires from the furnace to. Red now there can be two separate wires for this. Orange this wire connects to your heat pump if you have one.

Blue this is your common or c wire. Wye start delta run or pws connection 2 pole 12 lead single voltage. Blue green red yellow white wires. The thermostat is the control device that provides a simple user interface with the internal workings of your homes climate control system.

Honeywell thermostat wiring diagram 4 wire examples the table above provides a more complete list of honeywell thermostat wiring colors and their uses.