Lochinvar & A.O. Smith 100187881 Ignitor Assembly 326058-757 When executing a zone valve

When executing a zone valve repair

Bypassing a safety limit switch is strictly against safety protocols

By increasing the header pressure from 15 PSIG to 20 PSIG

and safety shut-off protocols

ensuring the system meets specified BTU inputs while maintaining low NOx emissions

Lochinvar & A.O. Smith 100187881 Ignitor Assembly 326058-757 When executing a zone valveThe Lochinvar & A. O. Smith 100187881 Ignitor Assembly is a critical OEM replacement part engineered for high efficiency commercial gas water heaters, specifically the BTH, SUF, and HCG series. As a veteran grade spark ignitor assembly, this component ensures precise ignition timing in 300, 400, and 500 MBH models, as well as 200 201 series units. When troubleshooting water heater ignition failure, the 100187881 is the primary solution for restoring