Lochinvar & A.O. Smith 100271315 Limit Switch 320788-704 The Allanson 421-331 Ignition Transformer

The Allanson 421-331 Ignition Transformer is a high-performance direct replacement oil burner transformer engineered specifically for Lennox oil burners

Corrosion Resistance: Non-metallic housing eliminates rust issues in outdoor or chemical-rich environments

Whether configured for pressure

You must handle the ignitor only by the ceramic base

Lochinvar & A.O. Smith 100271315 Limit Switch 320788-704 The Allanson 421-331 Ignition TransformerThe Lochinvar & A. O. Smith 100271315 Limit Switch is a critical safety component engineered for high performance hydronic and water heating systems. As a veteran technician knows, maintaining the integrity of the safety loop is non negotiable. This OEM high limit switch is designed to monitor outlet water temperature and provide a positive safety shutdown by interrupting the electrical circuit if temperatures exceed the factory set threshold,