Allanson 2721-653 Ferromagnetic Ignition Transformer 120V Double Pole Mid Point Ground

Product Description

The Allanson 2721-653 is a double pole ferromagnetic ignition transformer built for constant duty oil burner applications. It delivers a reliable high-voltage spark to ignite fuel in commercial, residential, and industrial oil heating systems. HVAC technicians and burner service professionals rely on this type of transformer when servicing or replacing components on oil-fired equipment. This unit is specifically matched to the Weil McLain QB180 burner, making it a direct-fit replacement for that model. The transformer draws power from a standard 120V, 60Hz input and steps it up to 10,000 volts on the secondary side, providing the strong, consistent arc needed to ignite oil reliably in demanding conditions. The mid-point ground configuration is a common setup in oil burner ignition circuits, helping to balance the output voltage across both high-voltage terminals and reduce the risk of insulation stress. The 1/4 inch push-on HV terminals allow for straightforward connections during installation or replacement service. Ferromagnetic transformers are known for their durability in continuous operation. Unlike electronic ignition modules, a ferromagnetic transformer runs constantly while the burner is firing, making it especially well-suited for applications where reliable, uninterrupted ignition is critical. The small can series form factor fits within the compact spaces typical of residential and light commercial oil burner assemblies. Whether you are replacing a failed transformer on a Weil McLain oil burner or stocking parts for regular maintenance, the Allanson 2721-653 is a dependable, industry-standard choice for oil ignition transformer replacement. It meets the constant duty demands of oil heating service work and is a known part in the burner service trade.

• Designed for constant duty oil burner ignition in commercial, residential, and industrial applications
• Direct replacement for Weil McLain QB180 burner with 120V input and 10,000V secondary output
• Double pole configuration with mid-point ground and 1/4 inch push-on HV terminals for easy installation

Product Highlights

The Allanson 2721-653 ferromagnetic ignition transformer provides dependable, high-voltage ignition for Weil McLain QB180 oil burners. Its constant duty design and double pole mid-point ground configuration make it a reliable choice for oil heating service and replacement work.

Product Information

Standard Information

• Brand: ALLANSON
• Manufacturer Part Number: 2721-653

Technical Specifications

• Application: Oil
• Burner Manufacturer: Weil McLain
• Burner Type: QB180
• Input Voltage: 120V
• Input Frequency: 60Hz
• Current: 23mA
• Secondary Voltage: 10000V
• Poles: Double
• Grounding: Mid Point Ground
• HV Terminal: 1/4 inches Push On
• Can Size: Small Can Series