Weil McLain 511-624-450 Switch Els PW 17895 00" WC to maintain strict

00" WC to maintain strict system safety tolerances and prevent nuisance trips or delayed ignition

and P291-3553RSH

Its UL Class F insulation rating ensures thermal stability up to 155°C

Field installation requires verifying the bracket’s orientation to ensure the venter wheel and isolator bushings remain properly centered within the venter housing out-let

Weil McLain 511-624-450 Switch Els PW 17895 00" WC to maintain strictThe Weil McLain 511 624 450 is a high precision differential pressure switch engineered specifically for CGi model boilers (sizes 25, 3, and 4) and certain HE II boiler applications. This OEM replacement part is factory calibrated to a 1. 18" WC nominal set point, ensuring critical safety monitoring of the exhaust vent and combustion air system. With an operational differential range of 0. 5 to 2. 0" WC, it effectively prevents the boiler burner from