
Lochinvar & A.O. Smith 100173747 Control
The Lochinvar & A.O. Smith 100173747 Control is a critical safety component designed for high-performance hydronic systems and commercial water heaters. This low water cut off with manual reset (LWCO) serves as a fail-safe mechanism, monitoring internal water levels to prevent dry-firing. Engineered specifically for Lochinvar boiler systems and A.O. Smith commercial units, the 100173747 ensures the burner circuit is interrupted immediately if a low-water condition is detected. Unlike auto-reset models, the 100173747 manual reset control requires a technician to physically inspect the system and clear the fault, providing an extra layer of oversight for boiler safety controls. Its robust construction is built to withstand the high-temperature environments of HVACR replacement parts, maintaining probe sensitivity of 20K Ohms to ensure reactive performance. Integrating the 100173747 LWCO into your service routine helps prevent catastrophic heat exchanger failure and maintains compliance with strict mechanical codes requiring manual-reset safety limits.
Key Benefits- Enhanced System Protection: Prevents dry-firing and potential heat exchanger cracking by isolating the burner circuit during low-water events.
- Manual Reset Security: Forces a professional system inspection after a trip, ensuring the root cause of water loss is addressed before operation resumes.
- OEM Compatibility: Designed as a direct replacement for Lochinvar 100173747 and A.O. Smith 100173747, ensuring exact fitment and terminal alignment.
- Reliable Monitoring: Utilizes advanced probe technology to maintain accurate water level detection even in systems with varying water chemistry.
- Field-Proven Durability: Built to handle the rigorous demands of commercial boiler rooms and high-cycle hydronic applications.
Is the 100173747 compatible with all Lochinvar Knight boilers?
This control is widely used across many Lochinvar and A.O. Smith models; however, you should always verify the specific part number in your unit's service manual or check the wiring harness configuration before installation.
What is the difference between this and an auto-reset LWCO?
An auto-reset model will restart the burner as soon as the water level returns to a safe point. The 100173747 manual reset requires a manual button press, which is often a code requirement for primary safety limits in commercial applications.
Does this part include the probe?
This specific SKU typically refers to the control module itself. If your probe is fouled or damaged, it should be inspected and potentially replaced alongside the control for optimal system responsiveness.
This item is not eligible for free shipping.
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: $200.81
-65%$200.81
$70.28Lochinvar & A.O. Smith 100173747 Control
The Lochinvar & A.O. Smith 100173747 Control is a critical safety component designed for high-performance hydronic systems and commercial water heaters. This low water cut off with manual reset (LWCO) serves as a fail-safe mechanism, monitoring internal water levels to prevent dry-firing. Engineered specifically for Lochinvar boiler systems and A.O. Smith commercial units, the 100173747 ensures the burner circuit is interrupted immediately if a low-water condition is detected. Unlike auto-reset models, the 100173747 manual reset control requires a technician to physically inspect the system and clear the fault, providing an extra layer of oversight for boiler safety controls. Its robust construction is built to withstand the high-temperature environments of HVACR replacement parts, maintaining probe sensitivity of 20K Ohms to ensure reactive performance. Integrating the 100173747 LWCO into your service routine helps prevent catastrophic heat exchanger failure and maintains compliance with strict mechanical codes requiring manual-reset safety limits.
Key Benefits- Enhanced System Protection: Prevents dry-firing and potential heat exchanger cracking by isolating the burner circuit during low-water events.
- Manual Reset Security: Forces a professional system inspection after a trip, ensuring the root cause of water loss is addressed before operation resumes.
- OEM Compatibility: Designed as a direct replacement for Lochinvar 100173747 and A.O. Smith 100173747, ensuring exact fitment and terminal alignment.
- Reliable Monitoring: Utilizes advanced probe technology to maintain accurate water level detection even in systems with varying water chemistry.
- Field-Proven Durability: Built to handle the rigorous demands of commercial boiler rooms and high-cycle hydronic applications.
Is the 100173747 compatible with all Lochinvar Knight boilers?
This control is widely used across many Lochinvar and A.O. Smith models; however, you should always verify the specific part number in your unit's service manual or check the wiring harness configuration before installation.
What is the difference between this and an auto-reset LWCO?
An auto-reset model will restart the burner as soon as the water level returns to a safe point. The 100173747 manual reset requires a manual button press, which is often a code requirement for primary safety limits in commercial applications.
Does this part include the probe?
This specific SKU typically refers to the control module itself. If your probe is fouled or damaged, it should be inspected and potentially replaced alongside the control for optimal system responsiveness.
This item is not eligible for free shipping.
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 Lochinvar & A.O. Smith 100173747 Control is a critical safety component designed for high-performance hydronic systems and commercial water heaters. This low water cut off with manual reset (LWCO) serves as a fail-safe mechanism, monitoring internal water levels to prevent dry-firing. Engineered specifically for Lochinvar boiler systems and A.O. Smith commercial units, the 100173747 ensures the burner circuit is interrupted immediately if a low-water condition is detected. Unlike auto-reset models, the 100173747 manual reset control requires a technician to physically inspect the system and clear the fault, providing an extra layer of oversight for boiler safety controls. Its robust construction is built to withstand the high-temperature environments of HVACR replacement parts, maintaining probe sensitivity of 20K Ohms to ensure reactive performance. Integrating the 100173747 LWCO into your service routine helps prevent catastrophic heat exchanger failure and maintains compliance with strict mechanical codes requiring manual-reset safety limits.
Key Benefits- Enhanced System Protection: Prevents dry-firing and potential heat exchanger cracking by isolating the burner circuit during low-water events.
- Manual Reset Security: Forces a professional system inspection after a trip, ensuring the root cause of water loss is addressed before operation resumes.
- OEM Compatibility: Designed as a direct replacement for Lochinvar 100173747 and A.O. Smith 100173747, ensuring exact fitment and terminal alignment.
- Reliable Monitoring: Utilizes advanced probe technology to maintain accurate water level detection even in systems with varying water chemistry.
- Field-Proven Durability: Built to handle the rigorous demands of commercial boiler rooms and high-cycle hydronic applications.
Is the 100173747 compatible with all Lochinvar Knight boilers?
This control is widely used across many Lochinvar and A.O. Smith models; however, you should always verify the specific part number in your unit's service manual or check the wiring harness configuration before installation.
What is the difference between this and an auto-reset LWCO?
An auto-reset model will restart the burner as soon as the water level returns to a safe point. The 100173747 manual reset requires a manual button press, which is often a code requirement for primary safety limits in commercial applications.
Does this part include the probe?
This specific SKU typically refers to the control module itself. If your probe is fouled or damaged, it should be inspected and potentially replaced alongside the control for optimal system responsiveness.
This item is not eligible for free shipping.
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.












