How to Wire a Ruud Thermostat | Hunker Most Ruud Econet and Rheem thermostats follow the same pattern when it comes to their wiring. To properly install your thermostat, connect the color-coded wires into Ruud Heat Pump thermostat Wiring Diagram | Free Wiring Diagram Ruud Heat Pump thermostat Wiring Diagram - Collections Of Rheem Heat Pump thermostat Wiring Diagram Collection. Ruud Heat Pump thermostat Wiring Diagram Collection.