Lochinvar & A.O. Smith 100208182 Limit switch

The Lochinvar & A.O. Smith 100208182 is a high-limit thermostat designed for precision thermal monitoring in commercial boiler and water heater applications. This 230F CO Auto Limit Switch acts as a critical safety integrated component, engineered to automatically interrupt the heating circuit if internal temperatures exceed the 230°F threshold. As a direct OEM replacement part, it is identical to the HLC2909 and HLC2909K models, ensuring seamless mechanical and electrical compatibility without the need for field modifications. This switch is commonly utilized in the Lochinvar Copper-Fin CB and CW series, including models like the CWN399PM and CWN500PM. The automatic reset (CO) functionality allows the system to resume operation once temperatures return to safe operating parameters, minimizing downtime while maintaining stringent safety protocols. For technicians servicing hydronic heating systems, utilizing this genuine Lochinvar limit switch ensures the equipment operates within factory-specified tolerances, protecting the heat exchanger from high-limit excursions and potential thermal stress.

Key Benefits

• Direct Cross-Reference: 100% compatible with HLC2909 and HLC2909K, providing a drop-in solution for legacy and modern Lochinvar units.
• Precision Thermal Calibration: Factory-set at 230°F to prevent overheating in Copper-Fin boilers and high-output water heaters.
• Automatic Reset Logic: Features a "Cut-Out" (CO) automatic reset, reducing the need for manual intervention during transient temperature spikes.
• OEM Reliability: Manufactured to A.O. Smith and Lochinvar specifications for long-term durability in demanding commercial environments.
• Optimized Safety: Essential for maintaining compliance with HVAC safety standards and preventing damage to high-cost system components.

Common Questions

Is the 100208182 compatible with the HLC2909?
Yes, the 100208182 is the current production part number and is functionally identical to the HLC2909 and HLC2909K limit switches.

Which Lochinvar models use this 230F limit switch?
This switch is typically found in Copper-Fin CB 315-500 boilers and CW 90-500 water heaters, as well as specific CWN-series models.

Does this switch require a manual reset?
No, this is an automatic reset limit switch. It will reset itself once the sensed temperature drops below the 230°F trip point.

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.