Each component ought to be set and connected with different parts in specific manner.
At left the thermostat wiring diagram illustrates use of a honeywell t87f thermostat in a 2 wire application controlling a gas fired heating appliance. Again referring to the honeywell thermostat ct31a1003 wiring diagram you can see it requires only two wires r and w.
Honeywell Dial Thermostat Wiring Diagram 2 Wire Honeywell
Old Honeywell Heat Only Thermostat Wiring Diagram Wiring
Honeywell Th1100dv1000 Pro Digital 2 Wire Heat Only
