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Propane requires a different orifice diameter due to its different combustion characteristics
Always verify the VA requirements of your specific control circuit before installation
It is identical to former part number 373-19870-502
offering identical physical dimensions and electrical ratings for a drop-in fit
Lochinvar & A.O. Smith 100208494 Control Board 30067439-890 Propane requires a different orificeSecure the operational integrity of high efficiency heating systems with the Lochinvar & A. O. Smith 100208494 Main Control Board. This genuine OEM component is the primary ignition control module designed to manage critical firing sequences, blower speed modulation, and pump logic for the Lochinvar Knight boiler series and compatible A. O. Smith commercial water heaters manufactured before serial 1707. As a direct replacement for the discontinued
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