Lochinvar & A.O. Smith 100171950 Valve
The Lochinvar & A.O. Smith 100171950 Valve is a critical OEM replacement gas valve kit engineered specifically for Lochinvar Knight WH399 wall-mount boilers. This high-precision combustion control assembly includes the gas valve, venturi gasket, and necessary hardware to ensure a zero-governor manifold pressure environment. As a veteran-grade commercial boiler part, it regulates fuel flow based on the negative pressure signal generated by the blower, maintaining the precise air-to-gas ratio required for high-efficiency condensing operation. Designed for Lochinvar WHN399 models, this negative regulation gas valve is compatible with both natural gas and liquid propane configurations, though field conversion may require the specific LP orifice disk. When performing a boiler gas valve replacement, technicians must verify the venturi scaling and ensure the plastic hose from the valve to the air inlet is securely connected. This kit preserves Smart System control communication, allowing the module to modulate firing rates effectively while maintaining strict safety standards during the trial for ignition and steady-state combustion.
Key Benefits for the Contractor- Direct OEM Compatibility: Specifically calibrated for the WH399 boiler, eliminating the mechanical tolerances found in aftermarket universal valves.
- Optimized Combustion: Includes a high-grade venturi gasket to prevent air leaks that cause erratic flame signals or soft lockouts.
- System Reliability: Engineered to withstand the thermal demands of high-Btu condensing heat exchangers, ensuring long-term negative pressure regulation.
- Streamlined Installation: Designed for exact fitment within the Knight series cabinet, reducing labor time during emergency service calls.
Is this valve compatible with LP (Propane) systems?
Yes, the 100171950 gas valve can be used for propane applications, provided the correct LP orifice disk from the original conversion kit is utilized and combustion is verified with a calibrated analyzer.
Does this kit include the venturi assembly?
This kit includes the gas valve with venturi gasket. While it interfaces directly with the existing venturi, it is essential to inspect the venturi for debris or damage during the swap.
How do I troubleshoot a suspected gas valve failure on a WH399?
Technicians should first verify 24VDC at the valve harness during the ignition trial and check for proper negative pressure from the blower. If power is present but the valve fails to open, a mechanical failure within the 100171950 assembly is likely.
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: $415.10
-65%$415.10
$145.28Lochinvar & A.O. Smith 100171950 Valve
The Lochinvar & A.O. Smith 100171950 Valve is a critical OEM replacement gas valve kit engineered specifically for Lochinvar Knight WH399 wall-mount boilers. This high-precision combustion control assembly includes the gas valve, venturi gasket, and necessary hardware to ensure a zero-governor manifold pressure environment. As a veteran-grade commercial boiler part, it regulates fuel flow based on the negative pressure signal generated by the blower, maintaining the precise air-to-gas ratio required for high-efficiency condensing operation. Designed for Lochinvar WHN399 models, this negative regulation gas valve is compatible with both natural gas and liquid propane configurations, though field conversion may require the specific LP orifice disk. When performing a boiler gas valve replacement, technicians must verify the venturi scaling and ensure the plastic hose from the valve to the air inlet is securely connected. This kit preserves Smart System control communication, allowing the module to modulate firing rates effectively while maintaining strict safety standards during the trial for ignition and steady-state combustion.
Key Benefits for the Contractor- Direct OEM Compatibility: Specifically calibrated for the WH399 boiler, eliminating the mechanical tolerances found in aftermarket universal valves.
- Optimized Combustion: Includes a high-grade venturi gasket to prevent air leaks that cause erratic flame signals or soft lockouts.
- System Reliability: Engineered to withstand the thermal demands of high-Btu condensing heat exchangers, ensuring long-term negative pressure regulation.
- Streamlined Installation: Designed for exact fitment within the Knight series cabinet, reducing labor time during emergency service calls.
Is this valve compatible with LP (Propane) systems?
Yes, the 100171950 gas valve can be used for propane applications, provided the correct LP orifice disk from the original conversion kit is utilized and combustion is verified with a calibrated analyzer.
Does this kit include the venturi assembly?
This kit includes the gas valve with venturi gasket. While it interfaces directly with the existing venturi, it is essential to inspect the venturi for debris or damage during the swap.
How do I troubleshoot a suspected gas valve failure on a WH399?
Technicians should first verify 24VDC at the valve harness during the ignition trial and check for proper negative pressure from the blower. If power is present but the valve fails to open, a mechanical failure within the 100171950 assembly is likely.
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 100171950 Valve is a critical OEM replacement gas valve kit engineered specifically for Lochinvar Knight WH399 wall-mount boilers. This high-precision combustion control assembly includes the gas valve, venturi gasket, and necessary hardware to ensure a zero-governor manifold pressure environment. As a veteran-grade commercial boiler part, it regulates fuel flow based on the negative pressure signal generated by the blower, maintaining the precise air-to-gas ratio required for high-efficiency condensing operation. Designed for Lochinvar WHN399 models, this negative regulation gas valve is compatible with both natural gas and liquid propane configurations, though field conversion may require the specific LP orifice disk. When performing a boiler gas valve replacement, technicians must verify the venturi scaling and ensure the plastic hose from the valve to the air inlet is securely connected. This kit preserves Smart System control communication, allowing the module to modulate firing rates effectively while maintaining strict safety standards during the trial for ignition and steady-state combustion.
Key Benefits for the Contractor- Direct OEM Compatibility: Specifically calibrated for the WH399 boiler, eliminating the mechanical tolerances found in aftermarket universal valves.
- Optimized Combustion: Includes a high-grade venturi gasket to prevent air leaks that cause erratic flame signals or soft lockouts.
- System Reliability: Engineered to withstand the thermal demands of high-Btu condensing heat exchangers, ensuring long-term negative pressure regulation.
- Streamlined Installation: Designed for exact fitment within the Knight series cabinet, reducing labor time during emergency service calls.
Is this valve compatible with LP (Propane) systems?
Yes, the 100171950 gas valve can be used for propane applications, provided the correct LP orifice disk from the original conversion kit is utilized and combustion is verified with a calibrated analyzer.
Does this kit include the venturi assembly?
This kit includes the gas valve with venturi gasket. While it interfaces directly with the existing venturi, it is essential to inspect the venturi for debris or damage during the swap.
How do I troubleshoot a suspected gas valve failure on a WH399?
Technicians should first verify 24VDC at the valve harness during the ignition trial and check for proper negative pressure from the blower. If power is present but the valve fails to open, a mechanical failure within the 100171950 assembly is likely.
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.
