
Laars Heating Systems 2400-556 Flow Sensor
The Laars Heating Systems 2400-556 Flow Sensor is a precision-engineered OEM replacement part designed for critical fluid dynamic monitoring in hydronic boiler systems. As a veteran-grade HVAC flow sensor, this component ensures the boiler maintains appropriate flow rates before allowing the ignition sequence, protecting the heat exchanger from dry-firing and thermal stress. This sensor is specifically calibrated for compatibility with the Laars Endurance series, including EBP and ED 110-175 models, as well as SMB/SMW 200/250 units. Built with a robust housing to resist corrosion and wear in demanding mechanical rooms, it operates on a standard 24VAC control circuit. For field technicians, verifying flow switch orientation is vital; the identification plate must face upward with the flow arrow aligned with the system piping to ensure accurate reed switch activation and prevent intermittent DHW sensor faults or boiler lockout codes.
Key Benefits- Direct OEM Compatibility: Verified fit for Laars Endurance EBP/ED and SMB/SMW series boilers, eliminating the need for field-modified brackets.
- Critical System Protection: Acts as a primary safety interlock to prevent heat exchanger damage caused by low-flow conditions.
- Durable Construction: High-quality materials engineered to withstand the thermal cycling and fluid velocities common in commercial heating applications.
- Precision Sensing: Provides reliable data transmission to the integrated boiler control board for optimized performance and reduced downtime.
- How do I troubleshoot an F-5 or F-6 error code on a Laars Endurance boiler? These codes often indicate a lack of water flow or a faulty 2400-556 sensor. Technicians should verify pump operation and check the sensor for scale buildup or mechanical failure.
- Is the 2400-556 flow sensor position-sensitive? Yes. To ensure proper activation, the sensor must be installed with the arrow pointing in the direction of water flow and the data plate facing upward.
- Can I use an adjustable wrench for installation? Due to the tight clearances in the Endurance cabinet, a 1-inch open-end wrench is typically required to secure the union nuts without damaging the surrounding gas lines or piping.
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.
Original: $135.10
-65%$135.10
$47.28Laars Heating Systems 2400-556 Flow Sensor
The Laars Heating Systems 2400-556 Flow Sensor is a precision-engineered OEM replacement part designed for critical fluid dynamic monitoring in hydronic boiler systems. As a veteran-grade HVAC flow sensor, this component ensures the boiler maintains appropriate flow rates before allowing the ignition sequence, protecting the heat exchanger from dry-firing and thermal stress. This sensor is specifically calibrated for compatibility with the Laars Endurance series, including EBP and ED 110-175 models, as well as SMB/SMW 200/250 units. Built with a robust housing to resist corrosion and wear in demanding mechanical rooms, it operates on a standard 24VAC control circuit. For field technicians, verifying flow switch orientation is vital; the identification plate must face upward with the flow arrow aligned with the system piping to ensure accurate reed switch activation and prevent intermittent DHW sensor faults or boiler lockout codes.
Key Benefits- Direct OEM Compatibility: Verified fit for Laars Endurance EBP/ED and SMB/SMW series boilers, eliminating the need for field-modified brackets.
- Critical System Protection: Acts as a primary safety interlock to prevent heat exchanger damage caused by low-flow conditions.
- Durable Construction: High-quality materials engineered to withstand the thermal cycling and fluid velocities common in commercial heating applications.
- Precision Sensing: Provides reliable data transmission to the integrated boiler control board for optimized performance and reduced downtime.
- How do I troubleshoot an F-5 or F-6 error code on a Laars Endurance boiler? These codes often indicate a lack of water flow or a faulty 2400-556 sensor. Technicians should verify pump operation and check the sensor for scale buildup or mechanical failure.
- Is the 2400-556 flow sensor position-sensitive? Yes. To ensure proper activation, the sensor must be installed with the arrow pointing in the direction of water flow and the data plate facing upward.
- Can I use an adjustable wrench for installation? Due to the tight clearances in the Endurance cabinet, a 1-inch open-end wrench is typically required to secure the union nuts without damaging the surrounding gas lines or piping.
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.
Product Information
Product Information
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Shipping & Returns
Description
The Laars Heating Systems 2400-556 Flow Sensor is a precision-engineered OEM replacement part designed for critical fluid dynamic monitoring in hydronic boiler systems. As a veteran-grade HVAC flow sensor, this component ensures the boiler maintains appropriate flow rates before allowing the ignition sequence, protecting the heat exchanger from dry-firing and thermal stress. This sensor is specifically calibrated for compatibility with the Laars Endurance series, including EBP and ED 110-175 models, as well as SMB/SMW 200/250 units. Built with a robust housing to resist corrosion and wear in demanding mechanical rooms, it operates on a standard 24VAC control circuit. For field technicians, verifying flow switch orientation is vital; the identification plate must face upward with the flow arrow aligned with the system piping to ensure accurate reed switch activation and prevent intermittent DHW sensor faults or boiler lockout codes.
Key Benefits- Direct OEM Compatibility: Verified fit for Laars Endurance EBP/ED and SMB/SMW series boilers, eliminating the need for field-modified brackets.
- Critical System Protection: Acts as a primary safety interlock to prevent heat exchanger damage caused by low-flow conditions.
- Durable Construction: High-quality materials engineered to withstand the thermal cycling and fluid velocities common in commercial heating applications.
- Precision Sensing: Provides reliable data transmission to the integrated boiler control board for optimized performance and reduced downtime.
- How do I troubleshoot an F-5 or F-6 error code on a Laars Endurance boiler? These codes often indicate a lack of water flow or a faulty 2400-556 sensor. Technicians should verify pump operation and check the sensor for scale buildup or mechanical failure.
- Is the 2400-556 flow sensor position-sensitive? Yes. To ensure proper activation, the sensor must be installed with the arrow pointing in the direction of water flow and the data plate facing upward.
- Can I use an adjustable wrench for installation? Due to the tight clearances in the Endurance cabinet, a 1-inch open-end wrench is typically required to secure the union nuts without damaging the surrounding gas lines or piping.
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.












