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Common Questions Is this bracket required for all Modutrol IV installations
Ensure all ductwork is clear before replacing the switch
maintaining the correct spring tension is critical for achieving the rated close-off pressures and ensuring the fail-safe position of your V-3000 pneumatic actuator
It features integrated 3amp fuse over current protection to safeguard downstream components from electrical faults
Weil McLain 511-624-521 Pressure Switch Els PW 17895 Common Questions Is this bracketThe 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