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This L240-85F thermal switch is engineered for a snap-action response
This furnace relay is critical for maintaining system compatibility and ensuring that heating stages cycle according to the demand of the low-voltage thermostat signal
To verify the close setpoint
Over-fusing a circuit risks permanent damage to the primary control board or transformer
Lennox 82W04 40VA Transformer This L240-85F thermal switch isThe Lennox 82W04 40VA Transformer is a heavy duty OEM replacement part engineered for constant 120V to 24V step down applications in residential and light commercial HVAC systems. This Class 2 transformer serves as the primary power source for low voltage control circuits, including thermostats, gas valves, ignition modules, and relays. Built to strict Lennox 20298305 specifications, it features a reliable foot mount design for secure installation
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