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The Lennox 49L87 Limit Switch is a critical safety component designed for precise thermal regulation in residential gas furnaces and commercial heating systems
as counterflow and direct-vent models may use different limit controls
How many bolt holes does this gasket have
Use a digital manometer to measure the actual draft produced by the inducer
Reliable Connectivity: 18-inch leads with pre-installed spade connectors simplify wiring in tight burner compartments
Robertshaw 780-783 Ignition Module Els PW 17895 The Lennox 49L87 Limit SwitchThe Robertshaw 780 783 is a critical HSI ignition module engineered for high demand gas fired heating systems and commercial cooking applications. As a direct replacement for the HS78034PL308A, this unit utilizes standard 120V AC supply voltage and 24V AC control voltage to provide reliable hot surface ignition. Designed for versatile field application, it supports both local and remote flame sensing, ensuring a stable flame rectification signal
