Lochinvar & A.O. Smith 100170647 Sensor Kit

The Lochinvar & A.O. Smith 100170647 Sensor Kit is a critical OEM replacement part designed for precise monitoring of flue temperature in high-efficiency boilers and water heaters. As a veteran technician knows, managing exhaust thermal data is non-negotiable for system safety and operational integrity. This flue sensor kit serves as a primary safeguard, transmitting real-time temperature fluctuations to the control board. If exhaust gases exceed safe thermal thresholds, the sensor triggers a system shutdown to prevent heat exchanger damage or hazardous venting conditions. Built to withstand the corrosive environment of a combustion flue, the 100170647 ensures the appliance maintains peak combustion efficiency while protecting internal components from premature thermal fatigue. This kit is widely utilized across the Lochinvar Power Fin series and compatible A.O. Smith commercial units, providing a direct-fit solution that eliminates the calibration errors often found with generic probes. Utilizing genuine Lochinvar parts like this kit ensures the unit remains within its original engineered specifications for long-term reliability in the field.

• Critical Thermal Monitoring: Provides high-accuracy flue gas temperature readings to the master controller to prevent overheating.
• OEM Compatibility: Specifically engineered for Lochinvar Power Fin (PB/PF) models ranging from 502 to 2001, ensuring direct-fit replacement.
• System Protection: Acts as a vital safety limit, preventing damage to the heat exchanger and venting components during abnormal firing conditions.
• Rugged Design: Constructed to resist soot accumulation and high-moisture condensate inherent in high-efficiency condensing boilers.

• What symptoms indicate a failing flue sensor? Typical signs include "Flue Temp High" lockouts, intermittent ignition failures, or the boiler shutting down immediately after the blower initiates.
• Is this sensor kit compatible with all Power Fin models? This kit is designed for various Power Fin PB/PF series boilers. Technicians should verify the specific MFR # 100170647 against the unit’s data plate and parts list.
• Can I bypass this sensor for testing purposes? For safety reasons, bypassing a high-limit thermal sensor is never recommended in a permanent installation; always replace a faulty sensor with genuine OEM parts to maintain safety certifications.

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.