26 WC pressure switch acts as a primary safety limit

or when there is insufficient gas flow to the main burner

it ensures stable reactive power across various system configurations

the manual reset button requires physical intervention

which requires a replacement to prevent delayed ignition or "booming

Lochinvar & A.O. Smith 100166325 Pump 319852-301 26 WC pressure switch actsThe Lochinvar & A. O. Smith 100166325 Pump Less Volute is a heavy duty centrifugal circulator pump component engineered for high efficiency commercial water heating systems. This replacement pump motor and impeller assembly is designed for rapid integration into existing volutes, minimizing downtime during critical hydronic repairs. Built with a high torque motor and precision balanced impeller, it maintains optimal flow rates in Lochinvar Knight and