Weil McLain 383-500-300 Sensor The hub can be mounted

The hub can be mounted on either the intake or discharge side depending on your specific condenser configuration

this OEM component ensures proper furnace high limit protection and prevents heat exchanger damage caused by restricted airflow or blower motor failure

Precise L150-20F Calibration: Provides reliable protection against overheating caused by restricted airflow or blower failure

and MG1E series furnaces

Weil McLain 383-500-300 Sensor The hub can be mountedThe Weil McLain 383 500 300 is an OEM spec Return Supply Water Sensor designed for precision temperature regulation within hydronic systems. Engineers and technicians primarily utilize this 12k ohm NTC thermistor kit for Weil McLain Ultra Series boilers, specifically supporting Ultra Gas Boiler models such as the Ultra 310 and Ultra 80 (Series 1 & 2). By delivering real time data to the U Control module, it allows the unit to modulate firing rates