Lochinvar & A.O. Smith 100208609 Gas Valve

The Lochinvar & A.O. Smith 100208609 Gas Valve is a critical 24VAC component designed for high-performance combustion control in residential and commercial heating systems. Engineered as the Honeywell SV9620M4001 SmartValve, this unit integrates both gas flow control and electronic intermittent pilot sequencing into a single, compact manifold. It is functionally identical to the VAL2420K gas valve, providing a direct-replacement solution that ensures seamless HVACR equipment compatibility without extensive field modifications.

This 24VAC gas valve operates at 50/60 Hz and requires a minimum 40VA NEMA-rated transformer, though 50VA is recommended for systems with larger secondary loads. The SV9620M4001 supports a wide regulation range, handling capacities up to 415,000 Btuh for natural gas, making it ideal for large-scale boilers and water heaters. Its design features a straight-through body pattern with standard NPT threading, facilitating straightforward gas valve replacement for technicians managing Lochinvar boiler parts and A.O. Smith assemblies.

• Direct OEM Interchange: Replaces 100208609, VAL2420K, and VAL2420, ensuring the mounting footprint and electrical connectors align with existing Lochinvar boiler parts.
• SmartValve Integration: Combines the gas manifold and ignition control, reducing the number of failure points and simplifying system troubleshooting.
• Robust Capacity: Capable of managing high-output applications up to 415,000 Btuh, providing reliable fuel delivery for heavy-duty commercial equipment.
• Standardized Electrical Specs: Uses a 24VAC control circuit with 1/2" or 3/4" NPT inlet/outlet options to suit various manifold configurations.

Is the 100208609 compatible with LP gas systems?
The Honeywell SV9620M4001 is typically factory-set for natural gas. However, it is field-convertible to LP gas using the appropriate manufacturer-approved conversion kit. Always verify the manifold pressure against the appliance rating plate after installation.

Can I use this to replace a standing pilot valve?
No, this is an intermittent pilot SmartValve system. Converting from a standing pilot to this electronic ignition system requires a full control upgrade; it is intended as a direct replacement for existing electronic ignition manifolds.

What causes a "6 flash" error code on this valve?
On SmartValve systems, a 6-flash code often indicates a soft lockout due to failed ignition trials. Technicians should inspect the pilot burner, flame sensor, and ensure the 24VAC transformer is providing adequate VA to the VAL2420K gas valve.

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.