Ritetemp Thermostat 8050C Wiring Diagram. I need help with operating the 8050c: This connects to the heater control line. ritetemp manual 8050c from userguideschematic.z21.web.core.windows.net Download the installation guide for the 8050c: Web ritetemp thermostat 8050c wiring diagram. I need help with operating the 8050c: