Lochinvar & A.O. Smith 100113158 Spark Module 340155-7024 the lower port is normally

the lower port is normally open and the upper port is normally closed

maintaining the integrity of the relief valve assembly is critical for preventing back-siphonage and protecting potable water systems from contamination

this kit is compatible with 7200 and 7222 series factory models

this main burner tube is compatible with both fuel types

Lochinvar & A.O. Smith 100113158 Spark Module 340155-7024 the lower port is normallyThe Lochinvar & A. O. Smith 100113158 Spark Module is a critical OEM replacement part engineered for high efficiency commercial water heaters and boilers. Specifically designed for the BTH, SUF, and HCG Series 200 units, as well as GDHE 50 and 75 models, this direct spark ignition control ensures precise timing and reliable spark generation to initiate the combustion cycle. In the field, this module (which replaces legacy part number 9008875005) is