Ensure proper grounding and follow the wiring diagram precisely to prevent short circuits or component damage

The solid 6H insert is preferred for new assemblies or when the shafts can be moved during installation for maximum structural integrity

Always verify your existing blower wheel pitch before installation

The double inlet blower wheel design optimizes air intake

19-inch bore

Lochinvar & A.O. Smith 100111990 Gas Valve 320788-703 Ensure proper grounding and followAs a seasoned technician, you know that a call for a Lochinvar Knight boiler gas valve replacement usually means a high stakes repair where precision is non negotiable. The Lochinvar & A. O. Smith 100111990 Gas Valve is an OEM spec modulating gas valve engineered for precise air to fuel ratios in high efficiency hydronic systems. This component is a critical HVAC replacement part designed for specific series of the Lochinvar Knight and A. O. Smith BTR