Allanson Transformers 421-659 Transformer

The Allanson 421-659 Ignition Transformer is a heavy-duty power supply engineered specifically for Cleaver Brooks burners and industrial combustion systems. Designed for high-demand thermal applications, this transformer operates on a 120Vac supply voltage and delivers a consistent 10,000Vac secondary voltage at 23mA. Its mid-point ground configuration ensures optimal electrical stability and arc performance, reducing the risk of intermittent ignition failures in high-pressure oil burners. This replacement ignition transformer is built with a rugged die-cast housing to withstand the high ambient temperatures found in boiler rooms. As a critical component for Allanson burner ignition, it provides the precise spark energy required for reliable fuel ignition across various industrial boiler parts configurations. Whether performing a routine HVAC transformer replacement or troubleshooting a lockout, this unit provides the exact electrical specifications required for Cleaver Brooks ignition reliability.

• Precise Electrical Output: 10,000V secondary provides a stable arc for reliable fuel atomization.
• Mid-Point Grounding: Increases safety and reduces electromagnetic interference within the burner control circuit.
• Application Specific: Specifically calibrated for use in Cleaver Brooks burner assemblies.
• Durable Construction: Engineered to resist vibration and thermal stress in commercial heating environments.
• High Current Density: 23mA current output ensures a hot, consistent spark for heavy fuel grades.

Is the Allanson 421-659 compatible with all Cleaver Brooks burners?
This transformer is designed for specific Cleaver Brooks models requiring a 10kV mid-point ground output. Always verify your current transformer's base plate dimensions and secondary voltage before installation.

What causes an ignition transformer to fail prematurely?
Common failure points include excessive heat exposure, cracked porcelain insulators on the electrodes, or incorrect air-gap settings which force the transformer to work harder to bridge the arc.

Can I use a 6,000V transformer instead of this 10,000V model?
No. Reducing the secondary voltage will lead to weak sparking, delayed ignition, and potential fuel pooling, which can damage the heat exchanger.

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.