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Precision Temperature Sensing: The 3" insert design allows for accurate monitoring of internal cabinet heat
Key Benefits for Technicians: Standardized 300°F Trip Point: Calibrated for specific Armstrong and Allied Air flame rollout tolerances to prevent heat exchanger damage
it ensures compatibility without requiring a full valve body replacement
the furnace will drop the flame signal or lockout entirely
Does orientation matter during installation
Trane CNT3781 Limit Switch Precision Temperature Sensing: The 3"The Trane CNT3781 is a precision engineered 180F CO Auto Limit Switch designed for high reliability thermal protection in commercial and industrial HVAC systems. Featuring a non adjustable fixed trip point at 180 degrees Fahrenheit, this high limit safety control occupies a critical role in the safety circuit, preventing heat exchanger damage by breaking the circuit upon detecting excessive discharge or internal temperatures. With a robust 10 7 8 inch
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