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while optimized for Fireye Nexus controls
Direct OEM Replacement: Replaces discontinued model 025-29139-003 for simplified system maintenance
Heavy-Duty Construction: Zinc-plated steel components provide superior resistance to corrosion and mechanical wear in industrial HVAC environments
a failure to sense flame within the 4-second TFI will result in immediate lockout
International Environmental 71159943 Actuator 318973-401 while optimized for Fireye NexusThe International Environmental 71159943 Actuator is a field proven 24V N C 2 position actuator designed for high cycle performance in HVAC fan coil units, air handlers, and VAV systems. This direct drive actuator operates with a normally closed (N C) configuration, ensuring the valve defaults to a closed state upon power loss to prevent uncontrolled flow. Engineered as a genuine IEC replacement part, this model is cross referenced with Erie
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