Use your wires for r, w, and c You will no longer have independent fan control This is a supported solution. By following this diagram, you can easily identify the correct terminals for each wire and make the necessary connections. When installing a heat only thermostat, you’ll need three wires to connect it to your furnace The wiring diagram will show the two hot leads, c (common) and r (red or 24vac).
Learn how to properly wire a 3 wire honeywell thermostat for heating and cooling systems Conclusion 3 wire thermostat wiring diagrams heat only are an important part of the installation process for any new thermostat Knowing the components and the correct wiring methods is essential to ensure that your thermostat is installed correctly and operates safely.
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