Honeywell Thermostat 2 Wire Thermostat Wiring Diagram Heat Only. Heat only 2 wire boiler furnace installations for ecobee thermostats. On a heat only system one of the wires usually red goes on the r terminal and the other wire usually white goes on the w terminal. Most homeowners with moderate home improvement skills can wire a heat only thermostat.
Y compressor stage 1 cooling y2 compressor stage 2 cooling g fan. 3 wire heat only thermostat r g w installing your ecobee with a boiler and ac dual transformer system ecobee thermostat installation with an isolation relay. 2 wire thermostat wiring diagram heat only you will want an extensive professional and easy to understand wiring diagram. Ecobee3 lite wiring diagrams.
The wire for the y terminal is usually yellow.
Above the thermostat wiring diagram illustrates use of a honeywell t87f thermostat in a 2 wire application controlling an oil fired heating appliance. Diagram rib relay with 2 wire thermostat wiring full version hd quality pimpmydiagram samanifattura it. Diagram water heater thermostat wiring single pole full version hd quality circuitdiagramweb. Check the honeywell thermostat wiring diagram in your owner s manual for more details. Most homeowners with moderate home improvement skills can wire a heat only thermostat.