This HVAC high limit switch is specifically verified for compatibility with Modine HD100

This specific Carrier furnace ignitor is cross-compatible with multiple Carrier

ensuring structural alignment without modification

It supports a wide electrical range of 120-277Vac and is compatible with air or combustion by-products that do not degrade its internal silicone diaphragm

Lochinvar & A.O. Smith 100173054 Inlet Sensor THPU32HP7Y This HVAC high limit switchThe Lochinvar & A. O. Smith 100173054 Inlet Sensor is a critical NTC thermistor engineered for precise temperature monitoring in high efficiency commercial water heaters and hydronic boilers. This sensor, which is cross compatible and functionally identical to WRE2145, monitors the incoming water temperature to provide real time data to the control module. This allows the system to modulate the firing rate accurately, maintaining a stable delta T