Laars Heating Systems 2400-446 Return Sensor
The Laars Heating Systems 2400-446 Return Sensor is a precision thermistor designed for critical temperature monitoring within the hydronic return loop. Engineered specifically for compatibility with Laars Endurance and Pennant series boilers, this NTC thermistor provides real-time feedback to the integrated control board to maintain tight setpoint differentials. Proper installation of this OEM replacement sensor is essential for accurate delta-T monitoring, preventing short-cycling and optimizing thermal efficiency. Operating as a 10K Ohm sensor at 77°F, it enables the system to modulate firing rates based on actual load demand rather than estimated return temperatures. For field technicians, ensuring the sensor is properly seated in the immersion well and checking for sensor resistance accuracy is vital during routine maintenance to prevent "no-heat" calls or error codes related to sensor out-of-range faults.
Key Benefits:
- Direct OEM Compatibility: Verified fit for Laars Heating Systems ensuring plug-and-play integration with Endurance boilers.
- Precision Thermal Response: High-accuracy temperature sensing reduces temperature overshoot and improves system longevity.
- System Signal Integrity: Designed to provide stable resistance signals to the Boiler Control Module, minimizing diagnostic errors.
- Modulation Efficiency: Enables the burner to precisely match the heating load by monitoring return-side fluid temperatures.
Common Questions:
How do I test the 2400-446 sensor for accuracy?
Using a multimeter set to Ohms, measure the resistance across the sensor leads while comparing the reading to a standard 10K NTC resistance chart based on the current water temperature.
What are the symptoms of a failing return sensor?
Typical indicators include erratic modulation, frequent cycling, or specific diagnostic fault codes on the control panel indicating an open or shorted sensor circuit.
Can this sensor be used in the supply side immersion well?
While the physical dimensions may fit, this specific part number is calibrated and wire-length optimized for return-side monitoring; always verify the part number in the Laars technical manual before swapping locations.
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: $123.75
-65%$123.75
$43.31Laars Heating Systems 2400-446 Return Sensor
The Laars Heating Systems 2400-446 Return Sensor is a precision thermistor designed for critical temperature monitoring within the hydronic return loop. Engineered specifically for compatibility with Laars Endurance and Pennant series boilers, this NTC thermistor provides real-time feedback to the integrated control board to maintain tight setpoint differentials. Proper installation of this OEM replacement sensor is essential for accurate delta-T monitoring, preventing short-cycling and optimizing thermal efficiency. Operating as a 10K Ohm sensor at 77°F, it enables the system to modulate firing rates based on actual load demand rather than estimated return temperatures. For field technicians, ensuring the sensor is properly seated in the immersion well and checking for sensor resistance accuracy is vital during routine maintenance to prevent "no-heat" calls or error codes related to sensor out-of-range faults.
Key Benefits:
- Direct OEM Compatibility: Verified fit for Laars Heating Systems ensuring plug-and-play integration with Endurance boilers.
- Precision Thermal Response: High-accuracy temperature sensing reduces temperature overshoot and improves system longevity.
- System Signal Integrity: Designed to provide stable resistance signals to the Boiler Control Module, minimizing diagnostic errors.
- Modulation Efficiency: Enables the burner to precisely match the heating load by monitoring return-side fluid temperatures.
Common Questions:
How do I test the 2400-446 sensor for accuracy?
Using a multimeter set to Ohms, measure the resistance across the sensor leads while comparing the reading to a standard 10K NTC resistance chart based on the current water temperature.
What are the symptoms of a failing return sensor?
Typical indicators include erratic modulation, frequent cycling, or specific diagnostic fault codes on the control panel indicating an open or shorted sensor circuit.
Can this sensor be used in the supply side immersion well?
While the physical dimensions may fit, this specific part number is calibrated and wire-length optimized for return-side monitoring; always verify the part number in the Laars technical manual before swapping locations.
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.
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Description
The Laars Heating Systems 2400-446 Return Sensor is a precision thermistor designed for critical temperature monitoring within the hydronic return loop. Engineered specifically for compatibility with Laars Endurance and Pennant series boilers, this NTC thermistor provides real-time feedback to the integrated control board to maintain tight setpoint differentials. Proper installation of this OEM replacement sensor is essential for accurate delta-T monitoring, preventing short-cycling and optimizing thermal efficiency. Operating as a 10K Ohm sensor at 77°F, it enables the system to modulate firing rates based on actual load demand rather than estimated return temperatures. For field technicians, ensuring the sensor is properly seated in the immersion well and checking for sensor resistance accuracy is vital during routine maintenance to prevent "no-heat" calls or error codes related to sensor out-of-range faults.
Key Benefits:
- Direct OEM Compatibility: Verified fit for Laars Heating Systems ensuring plug-and-play integration with Endurance boilers.
- Precision Thermal Response: High-accuracy temperature sensing reduces temperature overshoot and improves system longevity.
- System Signal Integrity: Designed to provide stable resistance signals to the Boiler Control Module, minimizing diagnostic errors.
- Modulation Efficiency: Enables the burner to precisely match the heating load by monitoring return-side fluid temperatures.
Common Questions:
How do I test the 2400-446 sensor for accuracy?
Using a multimeter set to Ohms, measure the resistance across the sensor leads while comparing the reading to a standard 10K NTC resistance chart based on the current water temperature.
What are the symptoms of a failing return sensor?
Typical indicators include erratic modulation, frequent cycling, or specific diagnostic fault codes on the control panel indicating an open or shorted sensor circuit.
Can this sensor be used in the supply side immersion well?
While the physical dimensions may fit, this specific part number is calibrated and wire-length optimized for return-side monitoring; always verify the part number in the Laars technical manual before swapping locations.
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.
