Allanson 421-557 Transformer Els PW 17895 It features a built-in sensor

It features a built-in sensor and a specialized snap-lock connection

the P322398 is calibrated specifically for natural gas systems

this Wayne tune-up kit excludes the electrode bracket holder (P/N 21679)

79" WC (water column) set point to monitor the pressure differential created by the inducer blower

leak-free seat

Allanson 421-557 Transformer Els PW 17895 It features a built-in sensorThe Allanson 421 557 is a heavy duty oil burner ignition transformer engineered specifically for Arco and American Standard burners. This iron core transformer utilizes a 120V primary supply to deliver a consistent 10,000V secondary output at 23mA, ensuring a powerful arc for reliable burner ignition in demanding environments. Designed with a mid point ground configuration, the 421 557 features a high silicon steel core and large gauge copper windings