Designed with external pressure equalization via a 1/4-inch flare connection

For technicians troubleshooting furnace sequencer wiring

If voltage is present and the element remains cold

This primary limit control features a 155-195F auto limit range

Weil McLain 383-500-035 Blower Assembly Kit Freon Designed with external pressure equalizationThis Weil McLain 383 500 035 Blower Assembly Kit is the direct OEM replacement engineered specifically for Ultra 155 Series Gas Boilers. As a technician, you know that maintaining precise combustion airflow is critical for the Ultra 155 gas boiler to operate at peak efficiency and avoid lockout codes. This replacement blower assembly eliminates the guesswork of sourcing individual components by providing a drop in solution that handles both the air