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JackM1
Community Member
since ‎05-25-2025
‎05-29-2025

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How to connect Lennox 150SDPRNC2KT HRV to nest thermostat 4th gen

05-25-2025
How to connect my old Lennox 150SDPRNC2KT HRV to Nest thermostat 4th gen? It has 3 small wires ( Orange, Red and Black) on wall controller. Any help would be greatly appreciated.