Using it on a 480V leg will cause immediate component failure

It is designed to handle high ambient temperatures and rapid cycling without significant capacitance drift

Zero Pressure Differential: The normally closed gas valve opens reliably even at 0 PSI

Is the D189 compatible with multi-speed systems

suitable for 3-way circuit applications or signaling

Lochinvar & A.O. Smith 100109872 Ignition Control 30067439-890 Using it on a 480VThe Lochinvar & A. O. Smith 100109872 Ignition Control is a critical integrated controller designed for precise sequence management in high efficiency water heaters and boilers. This authentic OEM component is a direct replacement for legacy part numbers 9004470205 and 190714 000, ensuring full compatibility with existing hot surface ignition (HSI) systems. This module manages the combustion process by supervising the inducer motor, gas valve, and