
Lochinvar & A.O. Smith 100277814 Gas Valve
The Lochinvar & A.O. Smith 100277814 Gas Valve is a critical OEM component engineered for high-performance natural gas hydronic and water heating systems. As a professional-grade spark ignition gas valve, this unit regulates fuel flow to the burner assembly with precision, ensuring stable combustion and reliable appliance startup. This part is the direct replacement for 100171884, making it the standard choice for maintaining the factory specifications of Lochinvar boilers and A.O. Smith water heaters, including CWN399PM and CWN500PM models.
Designed for the rigorous demands of the field, the 100277814 gas valve utilizes a 24V control circuit to manage the spark-to-pilot or direct spark ignition sequence. Technicians should note the 1.96 lb shipping weight and compact form factor, which facilitates standard manifold mounting. By installing this genuine OEM replacement, you ensure the system maintains its original ASHRAE 90.1 efficiency ratings and safe operating parameters, avoiding the calibration issues often associated with universal aftermarket valves.
Key Benefits for Contractors
- Direct Fit Compatibility: Seamlessly replaces legacy part number 100171884 without requiring manifold modifications.
- Optimized Ignition: Specifically calibrated for spark ignition systems to reduce delayed ignition and nuisance lockouts.
- Natural Gas Specific: Factory-set for natural gas (NG) applications to provide precise BTU input and optimal flame stability.
- OEM Safety Standards: Built to meet strict manufacturer tolerances for 100% shut-off, protecting the heat exchanger from unburned gas accumulation.
- Durable Construction: Engineered to withstand the thermal cycling typical of high-recovery commercial and residential units.
Common Questions
Is this a direct replacement for the 100171884 model?
Yes, the 100277814 is the manufacturer-designated superseding part for the 100171884, offering improved internal components while maintaining the same mounting footprint.
Can this valve be used for Propane (LP) conversions?
This specific model is configured for Natural Gas. To use it in an LP system, a manufacturer-approved conversion kit consisting of the correct orifice and regulator spring must be used, following technical service bulletins.
What are the primary symptoms of a failing 100277814 valve?
Typical indicators include "no-heat" calls where the igniter sparks but the main burner fails to light, or intermittent flame loss during the heating cycle despite a strong flame rectification signal.
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.
Lochinvar & A.O. Smith 100277814 Gas Valve
The Lochinvar & A.O. Smith 100277814 Gas Valve is a critical OEM component engineered for high-performance natural gas hydronic and water heating systems. As a professional-grade spark ignition gas valve, this unit regulates fuel flow to the burner assembly with precision, ensuring stable combustion and reliable appliance startup. This part is the direct replacement for 100171884, making it the standard choice for maintaining the factory specifications of Lochinvar boilers and A.O. Smith water heaters, including CWN399PM and CWN500PM models.
Designed for the rigorous demands of the field, the 100277814 gas valve utilizes a 24V control circuit to manage the spark-to-pilot or direct spark ignition sequence. Technicians should note the 1.96 lb shipping weight and compact form factor, which facilitates standard manifold mounting. By installing this genuine OEM replacement, you ensure the system maintains its original ASHRAE 90.1 efficiency ratings and safe operating parameters, avoiding the calibration issues often associated with universal aftermarket valves.
Key Benefits for Contractors
- Direct Fit Compatibility: Seamlessly replaces legacy part number 100171884 without requiring manifold modifications.
- Optimized Ignition: Specifically calibrated for spark ignition systems to reduce delayed ignition and nuisance lockouts.
- Natural Gas Specific: Factory-set for natural gas (NG) applications to provide precise BTU input and optimal flame stability.
- OEM Safety Standards: Built to meet strict manufacturer tolerances for 100% shut-off, protecting the heat exchanger from unburned gas accumulation.
- Durable Construction: Engineered to withstand the thermal cycling typical of high-recovery commercial and residential units.
Common Questions
Is this a direct replacement for the 100171884 model?
Yes, the 100277814 is the manufacturer-designated superseding part for the 100171884, offering improved internal components while maintaining the same mounting footprint.
Can this valve be used for Propane (LP) conversions?
This specific model is configured for Natural Gas. To use it in an LP system, a manufacturer-approved conversion kit consisting of the correct orifice and regulator spring must be used, following technical service bulletins.
What are the primary symptoms of a failing 100277814 valve?
Typical indicators include "no-heat" calls where the igniter sparks but the main burner fails to light, or intermittent flame loss during the heating cycle despite a strong flame rectification signal.
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
Shipping & Returns
Shipping & Returns
Description
The Lochinvar & A.O. Smith 100277814 Gas Valve is a critical OEM component engineered for high-performance natural gas hydronic and water heating systems. As a professional-grade spark ignition gas valve, this unit regulates fuel flow to the burner assembly with precision, ensuring stable combustion and reliable appliance startup. This part is the direct replacement for 100171884, making it the standard choice for maintaining the factory specifications of Lochinvar boilers and A.O. Smith water heaters, including CWN399PM and CWN500PM models.
Designed for the rigorous demands of the field, the 100277814 gas valve utilizes a 24V control circuit to manage the spark-to-pilot or direct spark ignition sequence. Technicians should note the 1.96 lb shipping weight and compact form factor, which facilitates standard manifold mounting. By installing this genuine OEM replacement, you ensure the system maintains its original ASHRAE 90.1 efficiency ratings and safe operating parameters, avoiding the calibration issues often associated with universal aftermarket valves.
Key Benefits for Contractors
- Direct Fit Compatibility: Seamlessly replaces legacy part number 100171884 without requiring manifold modifications.
- Optimized Ignition: Specifically calibrated for spark ignition systems to reduce delayed ignition and nuisance lockouts.
- Natural Gas Specific: Factory-set for natural gas (NG) applications to provide precise BTU input and optimal flame stability.
- OEM Safety Standards: Built to meet strict manufacturer tolerances for 100% shut-off, protecting the heat exchanger from unburned gas accumulation.
- Durable Construction: Engineered to withstand the thermal cycling typical of high-recovery commercial and residential units.
Common Questions
Is this a direct replacement for the 100171884 model?
Yes, the 100277814 is the manufacturer-designated superseding part for the 100171884, offering improved internal components while maintaining the same mounting footprint.
Can this valve be used for Propane (LP) conversions?
This specific model is configured for Natural Gas. To use it in an LP system, a manufacturer-approved conversion kit consisting of the correct orifice and regulator spring must be used, following technical service bulletins.
What are the primary symptoms of a failing 100277814 valve?
Typical indicators include "no-heat" calls where the igniter sparks but the main burner fails to light, or intermittent flame loss during the heating cycle despite a strong flame rectification signal.
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.












