It signifies the specific negative pressure required to close the switch and allow the ignition control to proceed

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Key Benefits for Contractors Precision Thermal Monitoring: Uses PTC sensor resistance technology to detect winding overheating before permanent damage occurs

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Trane MOD2554 Module 318172-701 It signifies the specific negativeThe Trane MOD2554 is a mission critical Remote Test and Operating Module (RTOM) designed for seamless integration with ReliaTel microprocessor controls. Engineered for field installation in Trane and American Standard rooftop units, this OEM control module provides the necessary hardware interface for advanced diagnostic testing and system expansion. Operating on a standard 24V HVAC control circuit (60 Hz), the MOD2554 functions as a central