The assembly includes pre-calibrated sensors to provide immediate automated system diagnostics

Simplified Installation: Orange color-coding and flanged mounting design allow for fast replacement during service calls

5 CFH for natural gas) as dictated by national fuel gas codes

reducing the risk of premature failure and costly system downtime

The hub allows for secure mounting directly to an electrical knockout

Weil McLain 511-624-521 Pressure Switch Els PW 17895 The assembly includes pre-calibrated sensorsThe Weil McLain 511 624 521 Pressure Switch is a critical safety component designed for precise differential pressure sensing in high efficiency Weil McLain boilers. This SPST (Single Pole Single Throw) air pressure switch is factory calibrated to a 1. 25" W. C. (Water Column) set point, ensuring the vent blower is maintaining adequate airflow before allowing the ignition sequence to proceed. It features dual 1 4" barb connections for secure pneumatic