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Wide Operating Range: Performance-tested for temperatures ranging from -40°F to 250°F to handle extreme environmental conditions
ensuring optimal evaporator performance
Key Benefits for the Contractor: High-Pressure Durability: Optimized for 125 PSI seat differential pressure
Optimized Startup Timing: Features a 15-second pre-purge to ensure safe gas evacuation and a 7-second trial for ignition for dependable burner light-off
Durable Ceramic Insulation: High-grade alumina ceramic prevents voltage leakage to ground in flame sensing circuits
Siemens Building Technology SFA71U/25G Actuator 319825-402 Wide Operating Range: Performance-tested forThe Siemens SFA71U 25G Actuator is a professional grade 2 position zone valve actuator designed for reliable control in hydronic systems. Engineered for seamless integration with the Siemens 599 Series zone valves, this 24V normally closed actuator provides a robust 105 N force to ensure tight shut off in high demand HVAC applications. This spring return valve actuator facilitates a mechanical fail safe in the event of power loss, making it a critical
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