Allanson 421-664 Transformer

The Allanson 421-664 ignition transformer is a critical replacement component engineered specifically for Webster Engineering burners. This heavy-duty oil burner transformer operates on a 120V AC supply voltage and delivers a consistent 10,000V secondary voltage at 23mA, ensuring reliable arc stabilization for efficient combustion. Designed with a mid-point ground configuration, this unit minimizes electrical interference and enhances safety during high-voltage discharge. Its robust internal insulation and thermal management properties allow it to withstand the demanding environments of commercial heating systems. For contractors performing preventative maintenance or emergency repairs, the 421-664 provides a direct-fit solution that maintains the OEM performance standards of Webster burner ignition systems. The 421-664 is built to handle high-duty cycles while providing a stable spark for boiler ignition transformers, ensuring your client's equipment remains operational under heavy load conditions.

• Precise Voltage Regulation: Delivers a steady 10kV output to ensure instant fuel ignition and reduced soot buildup.
• Webster Engineering Compatibility: Specifically designed for seamless physical and electrical integration with Webster burners.
• Mid-Point Ground Design: Enhances circuit safety and reduces the risk of electrical leakage to the burner chassis.
• High MA Rating: The 23mA output provides the necessary current for a strong, penetrating spark across the electrodes.

Common Questions

Will the 421-664 work on other burner brands?
While the electrical specifications (120V in, 10kV out) may match other units, the mounting footprint and terminal locations are optimized specifically for Webster Engineering burner assemblies.

How do I troubleshoot a weak spark on this transformer?
Verify the 120V input voltage is stable and check the secondary electrodes for proper gap settings and carbon fouling before replacing the transformer.

Does this unit support electronic or mechanical ignitions?
The Allanson 421-664 is a traditional iron-core transformer designed for high-voltage spark ignition in oil-fired applications.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.