and GB3BM units

Using the OEM York pressure switch is recommended to ensure the specific inches of water column calibration matches your unit's safety profile

such as the inducer motor running without flame establishment

Simplified Retrofitting: The included ZG-113 bracket facilitates easier transitions from legacy systems without replacing existing shafts

and Johnson Controls actuators

Allanson 421-BT299 Transformer Els PW 17895 and GB3BM unitsThe Allanson 421 BT299 is a heavy duty ferromagnetic ignition transformer designed for reliable high voltage performance in demanding oil burner applications. As a veteran grade service replacement transformer, this 120V ignition transformer delivers a consistent 10,000V secondary output at 23mA with a mid point ground configuration, ensuring a stable spark even in older recovery systems. Unlike standard units, the 421 BT299 is a universal oil ignitor