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Dual mounting Base
the Marley 4520-0011-000 is the standard OEM replacement for most Marley MUH-model heaters requiring a 300°F limit
Using a switch with reverse logic will result in an immediate system lockout as the board will see the circuit as closed before the inducer starts
minimizing operational noise while maximizing cycles for consistent HVAC management
York S1-025-32780-000 Ignitor Assembly 320788-704 Dual mounting BaseThe York S1 025 32780 000 Ignitor Assembly is a critical OEM replacement part designed for precision ignition in gas fired furnaces and rooftop HVAC units. This pilot ignitor assembly leverages a reliable 24V ignition system to ensure consistent burner engagement, effectively eliminating delayed ignition issues and cold start failures. As a direct fit component, the S1 025 32780 000 maintains the exact electrical specifications and mechanical
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