While this specific model is often configured for natural gas

all of which are field selectable via onboard DIP switches

For 277 VAC or multi-tap applications

the internal coil or mechanism is likely compromised

The Reznor 204955 Ignition Control is a critical replacement direct spark ignition (DSI) module designed for precise sequence timing and burner flame monitoring in high-efficiency heating systems

McDonnell & Miller 193 Controller Els PW 29614 While this specific model isThe McDonnell & Miller 193 (Part Number 163400) provides heavy duty combination low water cut off and pump control for commercial and industrial steam boilers. Engineered for high pressure systems with a 150 PSI maximum pressure rating, this unit features dual snap acting SPDT switches to ensure precise differential control and reliable burner shut down. The proportional action of the float mechanism maintains tight water level tolerances, preventing