Utica-Dunkirk S47 Limit Switch
When you're out in the field and a homeowner’s boiler is cycling on high limit or failing to fire, the Utica-Dunkirk S47 Limit Switch is the OEM replacement part you need to restore safe, reliable operation. This high-limit safety control is a critical safeguard in hydronic systems, engineered to interrupt the burner circuit if water temperatures exceed safe operating parameters. As a precision-calibrated HVAC safety switch, it features a 200°F open temperature and a 170°F close temperature, ensuring the system resets only after safe conditions are restored. Specifically sized for modern high-efficiency and standard cast iron boilers, this Boiler Limit Switch provides the exact mechanical actuation required for a seamless fit without the headaches of universal "will-fit" components that drift out of spec.
Experienced technicians rely on the Utica-Dunkirk boiler parts ecosystem for compatibility with Dunkirk and Utica series hydronic units. This thermal limit switch is built for rapid response to temperature spikes, preventing potential heat exchanger damage or unsafe pressure build-up. Whether you’re performing an emergency furnace limit switch replacement or routine seasonal maintenance, using this genuine S47 limit control ensures the unit's safety logic remains intact and compliant with original manufacturer specs.
Key Benefits for the Contractor:- OEM Precision: Guaranteed compatibility with Utica-Dunkirk boiler systems, eliminating the need for field modifications.
- Fixed Temperature Differential: Factory-set 200°F Open / 170°F Close prevents short-cycling and ensures stable system operation.
- Rugged Construction: Designed to withstand high-ambient boiler environments for long-term reliability in the field.
- Safety Compliance: Restores the original safety circuit integrity of the heating appliance.
What are the symptoms of a faulty S47 limit switch?
If the boiler burner won't ignite or if it shuts off before reaching the thermostat setpoint, the limit switch may be stuck open or its thermal disc may have degraded. Testing for continuity across the terminals when the system is cool is the standard diagnostic procedure.
Is this switch a manual or automatic reset?
This specific model is an automatic reset limit switch. It will automatically close the circuit once the water temperature drops to the 170°F reset point, allowing the system to resume normal operation without manual intervention.
Can I use this on other boiler brands?
While the electrical ratings and temperature setpoints may match other brands, this part is specifically validated for the Utica-Dunkirk S47 application. Always verify the part number against your specific model's parts list to ensure proper mounting and safety operation.
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 S47 Limit Switch
When you're out in the field and a homeowner’s boiler is cycling on high limit or failing to fire, the Utica-Dunkirk S47 Limit Switch is the OEM replacement part you need to restore safe, reliable operation. This high-limit safety control is a critical safeguard in hydronic systems, engineered to interrupt the burner circuit if water temperatures exceed safe operating parameters. As a precision-calibrated HVAC safety switch, it features a 200°F open temperature and a 170°F close temperature, ensuring the system resets only after safe conditions are restored. Specifically sized for modern high-efficiency and standard cast iron boilers, this Boiler Limit Switch provides the exact mechanical actuation required for a seamless fit without the headaches of universal "will-fit" components that drift out of spec.
Experienced technicians rely on the Utica-Dunkirk boiler parts ecosystem for compatibility with Dunkirk and Utica series hydronic units. This thermal limit switch is built for rapid response to temperature spikes, preventing potential heat exchanger damage or unsafe pressure build-up. Whether you’re performing an emergency furnace limit switch replacement or routine seasonal maintenance, using this genuine S47 limit control ensures the unit's safety logic remains intact and compliant with original manufacturer specs.
Key Benefits for the Contractor:- OEM Precision: Guaranteed compatibility with Utica-Dunkirk boiler systems, eliminating the need for field modifications.
- Fixed Temperature Differential: Factory-set 200°F Open / 170°F Close prevents short-cycling and ensures stable system operation.
- Rugged Construction: Designed to withstand high-ambient boiler environments for long-term reliability in the field.
- Safety Compliance: Restores the original safety circuit integrity of the heating appliance.
What are the symptoms of a faulty S47 limit switch?
If the boiler burner won't ignite or if it shuts off before reaching the thermostat setpoint, the limit switch may be stuck open or its thermal disc may have degraded. Testing for continuity across the terminals when the system is cool is the standard diagnostic procedure.
Is this switch a manual or automatic reset?
This specific model is an automatic reset limit switch. It will automatically close the circuit once the water temperature drops to the 170°F reset point, allowing the system to resume normal operation without manual intervention.
Can I use this on other boiler brands?
While the electrical ratings and temperature setpoints may match other brands, this part is specifically validated for the Utica-Dunkirk S47 application. Always verify the part number against your specific model's parts list to ensure proper mounting and safety operation.
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
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Description
When you're out in the field and a homeowner’s boiler is cycling on high limit or failing to fire, the Utica-Dunkirk S47 Limit Switch is the OEM replacement part you need to restore safe, reliable operation. This high-limit safety control is a critical safeguard in hydronic systems, engineered to interrupt the burner circuit if water temperatures exceed safe operating parameters. As a precision-calibrated HVAC safety switch, it features a 200°F open temperature and a 170°F close temperature, ensuring the system resets only after safe conditions are restored. Specifically sized for modern high-efficiency and standard cast iron boilers, this Boiler Limit Switch provides the exact mechanical actuation required for a seamless fit without the headaches of universal "will-fit" components that drift out of spec.
Experienced technicians rely on the Utica-Dunkirk boiler parts ecosystem for compatibility with Dunkirk and Utica series hydronic units. This thermal limit switch is built for rapid response to temperature spikes, preventing potential heat exchanger damage or unsafe pressure build-up. Whether you’re performing an emergency furnace limit switch replacement or routine seasonal maintenance, using this genuine S47 limit control ensures the unit's safety logic remains intact and compliant with original manufacturer specs.
Key Benefits for the Contractor:- OEM Precision: Guaranteed compatibility with Utica-Dunkirk boiler systems, eliminating the need for field modifications.
- Fixed Temperature Differential: Factory-set 200°F Open / 170°F Close prevents short-cycling and ensures stable system operation.
- Rugged Construction: Designed to withstand high-ambient boiler environments for long-term reliability in the field.
- Safety Compliance: Restores the original safety circuit integrity of the heating appliance.
What are the symptoms of a faulty S47 limit switch?
If the boiler burner won't ignite or if it shuts off before reaching the thermostat setpoint, the limit switch may be stuck open or its thermal disc may have degraded. Testing for continuity across the terminals when the system is cool is the standard diagnostic procedure.
Is this switch a manual or automatic reset?
This specific model is an automatic reset limit switch. It will automatically close the circuit once the water temperature drops to the 170°F reset point, allowing the system to resume normal operation without manual intervention.
Can I use this on other boiler brands?
While the electrical ratings and temperature setpoints may match other brands, this part is specifically validated for the Utica-Dunkirk S47 application. Always verify the part number against your specific model's parts list to ensure proper mounting and safety operation.
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.
