allowing for use in substantial commercial boiler setups

Use a manometer to verify if the inducer is pulling at least -1

When troubleshooting furnace short cycling or consistent ignition failure

or internal contact oxidation

preventing premature motor winding failure

Weil McLain 511-624-451 Pressure Switch Els PW 17895 allowing for use in substantialEnsure your combustion air proving circuit is operating within factory specifications with the Weil McLain 511 624 451 Pressure Switch. Designed as a critical safety component for specific high efficiency boiler models, this replacement air pressure switch features a precise 1. 25" WC setpoint and a highly reliable SPST (Single Pole Single Throw) configuration. Technicians often encounter ignition lockout codes when the inducer motor fails to pull a