Utica-Dunkirk 1500005 Limit Switch
The 1500005 Utica-Dunkirk limit switch is a mission-critical L230F manual reset rollout switch engineered for high-efficiency hydronic and forced-air systems. As an OEM safety component, it monitors for flame rollout—a dangerous condition typically caused by a restricted secondary heat exchanger, venting blockages, or inducer motor failure. This 230-degree Fahrenheit thermal limit serves as a final fail-safe, interrupting the gas valve circuit to prevent equipment damage or combustion hazards when flue gas temperatures exceed safe operating parameters. Designed for high-performance Utica UB90 and Dunkirk 95M series boilers, this switch features a robust bimetal disc and a manual reset button to ensure the technician identifies the root cause of the trip before restoring heat.
Key Benefits:
- L230F temperature rating provides precise thermal protection for high-efficiency burner boxes.
- Manual reset functionality prevents automatic cycling, requiring a system inspection to ensure safe operation.
- Direct OEM replacement for Utica-Dunkirk 1500005, ensuring exact physical and electrical compatibility.
- Compact, heavy-duty construction designed to withstand the high-ambient temperature environments of residential and light commercial boilers.
- Standard terminal connections simplify the integration into existing safety loops for field repairs.
Common Questions:
How to test the Utica-Dunkirk 1500005 limit switch?
A veteran tech will use a multimeter set to the lowest ohms of resistance. With the system power disconnected and wires removed, check for continuity across the terminals. If the switch is tripped or faulty, you will see an open circuit (infinite resistance); if it is closed and functional, the reading should be near zero ohms.
What causes a flame rollout switch to trip on a Dunkirk or Utica boiler?
Tripping is rarely a failure of the switch itself. Common causes include a cracked heat exchanger, scale buildup in the heat exchanger, or a clogged flue or intake pipe. Always verify manifold gas pressure and inducer draft before assuming the switch is the problem.
Can I bypass an L230F rollout switch for testing?
Never bypass a safety limit in a live system. Temporary jumping is only for terminal diagnostic verification while the technician is on-site. Permanent bypassing can lead to fire, carbon monoxide exposure, and system failure.
This item is not eligible for free shipping.
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.
Utica-Dunkirk 1500005 Limit Switch
The 1500005 Utica-Dunkirk limit switch is a mission-critical L230F manual reset rollout switch engineered for high-efficiency hydronic and forced-air systems. As an OEM safety component, it monitors for flame rollout—a dangerous condition typically caused by a restricted secondary heat exchanger, venting blockages, or inducer motor failure. This 230-degree Fahrenheit thermal limit serves as a final fail-safe, interrupting the gas valve circuit to prevent equipment damage or combustion hazards when flue gas temperatures exceed safe operating parameters. Designed for high-performance Utica UB90 and Dunkirk 95M series boilers, this switch features a robust bimetal disc and a manual reset button to ensure the technician identifies the root cause of the trip before restoring heat.
Key Benefits:
- L230F temperature rating provides precise thermal protection for high-efficiency burner boxes.
- Manual reset functionality prevents automatic cycling, requiring a system inspection to ensure safe operation.
- Direct OEM replacement for Utica-Dunkirk 1500005, ensuring exact physical and electrical compatibility.
- Compact, heavy-duty construction designed to withstand the high-ambient temperature environments of residential and light commercial boilers.
- Standard terminal connections simplify the integration into existing safety loops for field repairs.
Common Questions:
How to test the Utica-Dunkirk 1500005 limit switch?
A veteran tech will use a multimeter set to the lowest ohms of resistance. With the system power disconnected and wires removed, check for continuity across the terminals. If the switch is tripped or faulty, you will see an open circuit (infinite resistance); if it is closed and functional, the reading should be near zero ohms.
What causes a flame rollout switch to trip on a Dunkirk or Utica boiler?
Tripping is rarely a failure of the switch itself. Common causes include a cracked heat exchanger, scale buildup in the heat exchanger, or a clogged flue or intake pipe. Always verify manifold gas pressure and inducer draft before assuming the switch is the problem.
Can I bypass an L230F rollout switch for testing?
Never bypass a safety limit in a live system. Temporary jumping is only for terminal diagnostic verification while the technician is on-site. Permanent bypassing can lead to fire, carbon monoxide exposure, and system failure.
This item is not eligible for free shipping.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The 1500005 Utica-Dunkirk limit switch is a mission-critical L230F manual reset rollout switch engineered for high-efficiency hydronic and forced-air systems. As an OEM safety component, it monitors for flame rollout—a dangerous condition typically caused by a restricted secondary heat exchanger, venting blockages, or inducer motor failure. This 230-degree Fahrenheit thermal limit serves as a final fail-safe, interrupting the gas valve circuit to prevent equipment damage or combustion hazards when flue gas temperatures exceed safe operating parameters. Designed for high-performance Utica UB90 and Dunkirk 95M series boilers, this switch features a robust bimetal disc and a manual reset button to ensure the technician identifies the root cause of the trip before restoring heat.
Key Benefits:
- L230F temperature rating provides precise thermal protection for high-efficiency burner boxes.
- Manual reset functionality prevents automatic cycling, requiring a system inspection to ensure safe operation.
- Direct OEM replacement for Utica-Dunkirk 1500005, ensuring exact physical and electrical compatibility.
- Compact, heavy-duty construction designed to withstand the high-ambient temperature environments of residential and light commercial boilers.
- Standard terminal connections simplify the integration into existing safety loops for field repairs.
Common Questions:
How to test the Utica-Dunkirk 1500005 limit switch?
A veteran tech will use a multimeter set to the lowest ohms of resistance. With the system power disconnected and wires removed, check for continuity across the terminals. If the switch is tripped or faulty, you will see an open circuit (infinite resistance); if it is closed and functional, the reading should be near zero ohms.
What causes a flame rollout switch to trip on a Dunkirk or Utica boiler?
Tripping is rarely a failure of the switch itself. Common causes include a cracked heat exchanger, scale buildup in the heat exchanger, or a clogged flue or intake pipe. Always verify manifold gas pressure and inducer draft before assuming the switch is the problem.
Can I bypass an L230F rollout switch for testing?
Never bypass a safety limit in a live system. Temporary jumping is only for terminal diagnostic verification while the technician is on-site. Permanent bypassing can lead to fire, carbon monoxide exposure, and system failure.
This item is not eligible for free shipping.
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.
