this flue exhaust safety switch ensures the system shuts down if exhaust gases exceed safe thermal parameters

but never downrate it

Does this include the hub set screw

If installed outdoors

Key Benefits Direct N1 Replacement: Drop-in compatibility for existing Watts N1 configurations ensures fast field service without needing to modify the tank setup

York S1-024-19082-030 Sequencer Relay Els PW 17895 this flue exhaust safety switchUpgrade or repair electric furnaces and air handlers with the York S1 024 19082 030 Sequencer Relay, a factory authorized 24V heat sequencer designed for precise load management. This HVAC electric heater control is engineered for specific compatibility with York 2CE04501525A models, providing the essential staging required to prevent electrical surges. As a multi stage heat sequencer, it uses a bimetal disc and PTC heater to stagger the activation of