Lochinvar & A.O. Smith 100109724 Valve

The Lochinvar & A.O. Smith 100109724 Valve is a direct-fit OEM replacement gas control designed specifically for high-efficiency water heaters and residential power vent boiler systems. This natural gas valve operates on a 20V ignition circuit, featuring a 1/2" NPT inlet and a factory-set 4" WC manifold pressure to ensure precise fuel-to-air ratios and stable combustion cycles. Engineering specifications for the 100109724 include a 1-1/4" shank length and a high-temperature limit rated for 160 degrees Fahrenheit, making it a critical component for Series 100 FVIR and Intellivent gas control platforms. When troubleshooting ignition failure or flame-out codes in Lochinvar or A.O. Smith units, verify your solenoid voltage and manifold pressure against the rating plate. This gas control thermostat integrates a thermal cut-off for advanced safety, providing reliable manifold pressure regulation for heavy-duty HVACR applications.

• OEM Compatibility: Precision-engineered for A.O. Smith GPV and Lochinvar Series 100 residential power vent models.
• Exact Calibration: Factory-set for 4" WC natural gas systems to prevent delayed ignition or sooting.
• Integrated Safety: Features an internal high-limit thermostat and automatic solenoid shut-off in the event of flame failure.
• Standardized Threading: Utilizing a 1/2" NPT connection for straightforward integration with existing gas lines.

Is the 100109724 compatible with LP gas?
No, this model is specifically calibrated for Natural Gas at a 4" water column. Using this valve with propane will lead to combustion instability and safety risks.

Can I use this valve on a 120V system?
This is a 20V gas valve. Applying 120V will result in immediate solenoid failure and damage to the Intellivent control board.

What is the manifold pressure setting?
The factory setting is 4" WC. If your unit requires 3.5" or a different specification, check the appliance rating plate before installation.

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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.