Heating Thermostat Wiring Diagram. Y plan system schematic. Showing flow from boiler to y plan or mid position diverter valve and then onto heating or hot water circuit.
It shows the components of the circuit. 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. Check the heating systems wiring to determine what type it is.
Tank thermostat must be satisfied before heating comes on.
Red now there can be two separate wires for this. Green wire for fans. Heat pump thermostat wiring a typical wire color and terminal diagram. It shows the elements of the.