specifically designed to protect blower motors and heat exchangers from particle bypass

covering both 5000 and older 1000 series (with mounting screws) valve applications

Key Benefits Precise Thermal Protection: Factory-calibrated to open at 255°F

Delivers consistent 70W heat output to ensure startup reliability in cold ambient conditions

Simplified Installation: Standard 1/4" male spade terminals allow for direct plug-and-play replacement in existing wiring harnesses

Allanson Transformers 421-BT290 Transformer Els PW 17895 specifically designed to protect blowerThe Allanson 421 BT290 is a heavy duty universal ignition transformer engineered for high performance oil burner service and replacement applications. Operating on a 120Vac supply voltage, this unit delivers a consistent 10,000Vac secondary voltage at 23mA, ensuring reliable arc initiation even in demanding environments. Designed with a mid point ground and a durable internal junction box, it simplifies field wiring while maintaining electrical