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ideal for low-pressure systems
Repetitive trips often indicate restricted airflow
Units with intermittent pilot ignition (IPI) typically use a flame sensor or a different pilot-proving assembly
Durable Contacts: High-quality electrical terminals resist corrosion and ensure reliable low-voltage circuit continuity
McDonnell & Miller 309100 Switch 30067439-890 ideal for low-pressure systemsThe McDonnell & Miller 309100 Switch, also known as the Model Number 11 Switch, is a heavy duty replacement switch kit designed for field repairs of float type low water cut offs. Engineered for automatic reset operation, this unit features two SPST switches that allow for simultaneous control of a burner circuit and a secondary function, such as an electric water feeder or a low water alarm. It is fully compatible with Series 61, 64, 67, 69, 764, and