Reznor 210762 Limit Switch

The Reznor 210762 Limit Switch is a critical OEM replacement part engineered for precision thermal monitoring in waste oil heaters and HVAC systems. Specifically designed as a 155F CO Auto Limit Switch, this component functions as a low temperature limit switch or low oil limit thermostat, ensuring the heater operates within safe parameters. When the pre-heater or combustion air reaches the 155°F threshold, the normally closed (NC) contacts respond to protect the heat exchanger and internal components from thermal overrun. Featuring distinctive black wire leads for seamless integration into existing Reznor heater wiring harnesses, this auto-reset limit switch eliminates the need for manual intervention after a temporary temperature spike, reducing nuisance service calls for technicians.

For contractors involved in industrial heating maintenance, using a genuine Reznor 210762 is vital for maintaining the UL listing and operational integrity of waste oil units. The 155-degree rating is calibrated for specific pre-heater assemblies where precise fuel atomization temperatures are required for efficient combustion. This limit thermostat provides the rugged reliability needed in heavy-duty commercial environments, preventing costly equipment failure by providing an accurate mechanical shut-off. Installation is straightforward with the standard mount-and-lead configuration, making it an essential stocked item for winter service cycles.

• OEM Precision: Genuine Reznor replacement part ensures exact 155°F trip point for critical safety compliance.
• Automatic Reset: Integrated auto-reset functionality restores circuit continuity once temperatures drop below the safety differential.
• Simplified Wiring: Equipped with factory-terminated black wire leads to facilitate fast field installation and interchangeability.
• Enhanced Safety: Acts as a high-limit safety control to prevent equipment damage in waste oil heater applications.
• Durability: Built with high-grade thermal materials to withstand the rigors of commercial HVAC environments.

What is the function of the 155-degree limit in a Reznor heater?
The 155F limit switch monitors the temperature of the oil pre-heater or specific air zones to ensure the system does not exceed safe operating limits, specifically preventing overheating in waste oil applications.

Are the wires polarity sensitive during installation?
As a mechanical limit thermostat, the 210762 typically operates as a simple switch; however, technicians should always verify the schematic of the specific Reznor unit to ensure proper circuit integration.

Can this switch be used in gas-fired Reznor unit heaters?
While Reznor uses various limit controls, the 210762 is specifically calibrated for low temperature oil applications. Always cross-reference your model and serial number to confirm compatibility with this specific 155-degree rating.

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.