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Siemens Combustion QRA4.U UV Flame Detector

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Special Price $247.82 Regular Price $275.08
In stock
SKU
QRA4.U
The Siemens Combustion QRA4.U UV Flame Detector is a durable sensor that is used in HVAC systems. It works with ultraviolet radiation and reads the unique UV signature from flames to avoid possible dangers and quickly detect. It is commonly used in HVAC systems to quickly identify flame presence or absence to prevent hazardous conditions. The part provides safety, reduced risk of fire-related damage, and improved system efficiency. Being versatile and accurate, its use is highly recommended to fully monitor burners, furnaces and other combustion processes in industrial and commercial conditions.
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HVAC Controls & Electrical, Safety & Limit Devices
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Specifications

  • Type: UV Flame Detector
    Manufacturer Name: Siemens Combustion
    Product Number: QRA4.U
    OEM Part Number: QRA4.U
    Product Description: Uv Flame Detector
    Weight:0.47lbs/213.19g

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    Product Questions (2)
    Customer Questions
    What maintenance is required for the Siemens Combustion QRA4.U UV Flame Detector?

    Regularly inspect the detector lens for dust, soot, or oil film that can reduce flame signal accuracy. Clean gently with a soft, non-abrasive cloth to maintain UV sensitivity. Ensure proper alignment with the flame source and verify wiring connections remain tight and corrosion-free for safe and accurate combustion monitoring.

    What are common issues with the Siemens Combustion QRA4.U UV Flame Detector?

    • False flame signal loss due to dirty lens.
    • Intermittent flame detection or nuisance shutdowns.
    • Electrical connection faults or loose wiring.
    • Reduced UV sensitivity from contamination or aging.
    • Misalignment causing unaccurate flame sensing.

    Installation Steps

    Step 1: Disconnect all power to the burner control system before installation.

    Step 2: Mount the detector securely with a clear view of the burner flame.

    Step 3: Align the sensor toward the flame source and avoid direct exposure to ignition sparks.

    Step 4: Connect wiring according to the burner control diagram.

    Step 5: Tighten all terminals and inspect for secure connections.

    Step 6: Restore power and test flame detection for proper burner operation and safe response.