Beckett Igniter 7247U Sensor

The Beckett 7247U MiniPeeper UV Sensor is a critical component for maintaining precise flame supervision in high-performance oil burner applications. This ultraviolet flame detector is engineered to monitor the UV radiation emitted by a flame, ensuring the primary control can accurately verify ignition and detect flame-out conditions. Utilizing a 1/2" NPT mounting connection, the 7247U allows for a secure, airtight fit into the scanner port, preventing combustion air leakage. As an OEM Beckett replacement part, this sensor eliminates the nuisance lockouts often associated with aging or fouled detectors. The Beckett MiniPeeper design is optimized for compact burner housings where traditional cad cells may lack the sensitivity or spectral response required for specific fuel-to-air ratios. Whether you are servicing residential units or commercial heating plants, installing a genuine 7247U UV sensor ensures the integrity of the burner’s safety sequence and prevents unburned fuel accumulation.

Key Benefits for Technicians:

• Optimized Spectral Sensitivity: Specifically tuned to detect ultraviolet radiation, providing superior flame discrimination over standard infrared or visible light sensors.
• Industrial-Grade Construction: Built to withstand the high-ambient temperatures and vibration common in heavy-duty burner vestibules.
• Standardized 1/2" Mounting: Features a 1/2 inch mounting thread for seamless integration across a wide range of Beckett burner models.
• Enhanced Safety Logic: Provides the fast response time necessary for modern primary controls to execute safe-start checks and rapid flame failure response.
• Direct OEM Fit: Guaranteed compatibility with Beckett MiniPeeper equipped systems, reducing troubleshooting time and field callbacks.

Common Questions & Troubleshooting:

How do I know if my Beckett 7247U needs replacement?
If the burner is cycling through the ignition sequence but locking out on flame failure despite a visible flame, the UV tube inside the 7247U may be depleted or fouled. You should also check for a cracked lens or soot buildup on the sensor face before replacing.

Is the 7247U interchangeable with a standard photocell?
No. The Beckett 7247U is a UV-specific sensor and requires a control box designed to process a UV signal. It cannot be used in circuits designed for standard cadmium sulfide (cad cell) resistors.

What is the proper mounting orientation for the MiniPeeper?
The sensor must have a clear line of sight to the first third of the flame. Ensure the 1/2" mounting is tight to prevent air infiltration from cooling the sensor excessively or affecting the flame pattern.

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.