Common causes include a cracked heat exchanger

If the new unit is smaller

consistent pilot flame for reliable ignition

Built for industrial durability

Broad Application Range: Compatible with various Lochinvar SIT and SDT models

Lochinvar & A.O. Smith 100233587 Burner Gasket Common causes include a crackedWhen you are performing annual maintenance on a high efficiency Lochinvar Knight or A. O. Smith system, ensuring a gastight seal at the burner assembly is non negotiable. The Lochinvar & A. O. Smith 100233587 Combustion Burner Gasket is the professional grade OEM solution designed to prevent the escape of hazardous combustion byproducts and maintain the precise pressure balance required for condensing boiler efficiency. This specific boiler burner