York S1-RLTH-31831 Freeze Thermostat 37°F Open 49°F Close

The York S1-RLTH-31831 Freeze Thermostat is a temperature-responsive safety control that monitors low-temperature conditions within proper heating and cooling equipment. It is installed near the coil or other temperature-sensitive section and connected to the control circuit to monitor freezing conditions for HVAC systems. It opens the electrical circuit when the temperature falls to 37F and closes the circuit after the temperature rises to 49F. It supports freeze protection, safeguards temperature-sensitive components, and maintains proper safety control circuit operations during system operations.