and an aluminum 60 to 90F scaleplate

What is the purpose of the 30-90 second delay

The Rheem-Ruud 47-23117-03 Limit Switch is a critical OEM replacement safety control engineered to regulate supply plenum temperatures in gas-fired comfort systems

High-Capacity Conductivity: Features 10 gauge wire rated for 600V

The B1370910S limit switch is calibrated to trigger at a 170-degree Fahrenheit cutout temperature

Cleveland Controls AFS-275-112 Switch and an aluminum 60 toThe Cleveland Controls AFS 275 112 is a versatile differential air pressure switch designed for critical HVAC air proving and energy management applications. Built to sense positive, negative, or differential air pressure, this SPDT pressure switch features an adjustable set point range from 0. 05" WC to 2. 0" WC. The plated housing contains a durable silicone diaphragm and a snap acting switch mechanism, ensuring reliable performance in package