It should be installed directly into the tank tapping or in the hot water outlet piping within the allowable distance from the tank top

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

Optimized Airflow: The 10 3/4 inch diameter design ensures the system hits target static pressure for consistent climate control

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

Ensuring clean electrical connections at the coil terminals can prevent premature failure and contact pitting

Weil McLain 383-500-658 Control Module 30067439-890 It should be installed directlyThe 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