Utica-Dunkirk 14631303 Temp Switch

The Utica-Dunkirk 14631303 Vent Temperature Switch is a critical safety component designed for high-efficiency gas boilers and heating systems. Specifically calibrated as a 180-degree fixed temperature limit, this manual reset rollout switch monitors exhaust temperatures within the vent hood or combustion chamber. When vent gases exceed the 180°F threshold due to flue blockages or heat exchanger issues, the switch breaks the electrical circuit to the gas valve, preventing hazardous conditions. This OEM replacement part ensures precise thermal response and system reliability in Utica and Dunkirk boiler models. Its rugged construction resists internal heat cycling, maintaining tight tolerance levels essential for HVAC safety compliance. For technicians performing boiler troubleshooting or routine maintenance, replacing a fouled or tripped limit control switch is a standard procedure to restore structural integrity and operational safety to the appliance's venting sequence.

• Precise Thermal Cutoff: Fixed 180°F trip point ensures immediate system shutdown during localized overheating or flue gas spillage.
• OEM Compatibility: Exact fit for Utica-Dunkirk 14631303, eliminating the need for field modifications or bracket adjustments.
• Manual Reset Mechanism: Requires a technician to inspect the system before restarting, ensuring the root cause of the high-limit trip is identified.
• Industrial Build Quality: High-grade ceramic and metal components engineered to withstand the demanding environment of a combustion collector box.

How do I test if the 14631303 vent temp switch is faulty?
Using a multimeter, check for continuity across the terminals. If the switch is cool and shows an open circuit, and the reset button is depressed, the internal bimetal disc has likely failed and the unit requires replacement.

What causes this 180-degree switch to trip frequently?
Frequent tripping usually indicates a restricted chimney, a cracked heat exchanger, or improper manifold pressure causing excessive flue gas temperatures. Always verify draft pressure after installation.

Does this switch replace other Dunkirk or Utica limit models?
This specific part is the 180F vent limit. Always verify the temperature stamping on the existing switch flange to ensure it matches 180F before installing to maintain the original safety sequence.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.