requiring higher thermostat pressure to initiate airflow

Industrial-Grade Filtration: The MERV 16 rating ensures the capture of bacteria

High-Temperature Resistance: Maintains structural integrity under extreme heat to prevent boiler gasket leaks

Optimized Refrigerant Control: Designed specifically for R404A and R507A systems to prevent liquid slugging and protect the compressor

manual gas cock

Weil McLain 383-500-658 Control Module 30067439-890 requiring higher thermostat pressure toThe Weil McLain 383 500 658 Ultra U IGN Control Module is a critical integrated ignition and blower control assembly designed specifically for Ultra Series Gas Fired Water Boilers. This OEM Weil McLain replacement part manages the specialized sequence of operations for the burner, including pre purge, hot surface ignition, gas valve actuation, and flame rectification monitoring. Engineered for precision, it ensures the Ultra Series boiler control