Williams P322397 Pilot/Generator Assembly

The Williams P322397 Pilot/Generator Assembly is a high-performance replacement component specifically engineered for Williams Monterey Top Vent furnaces. This millivolt ignition system is designed for Liquid Propane (LP) applications, providing a stable pilot flame and the necessary thermopile voltage to drive the gas valve without external power. As an OEM-spec pilot burner/thermopile assembly, it ensures precise flame rectification and reliable main burner ignition in models such as the 5009821 and 5009621A. The assembly features a 90-degree orientation and includes a heavy-duty pilot hood and factory-set orifice for optimal gas-air mixing. For contractors maintaining off-grid heating systems or vintage millivolt wall furnaces, this LP pilot assembly is the standard for restoring thermal efficiency and preventing nuisance lockouts or pilot outages. Field testing confirms compatibility across various Williams Comfort Products that utilize a self-generating control circuit, making it a critical stock item for mid-winter service calls.

• Optimized for LP Gas: Features a factory-installed orifice specifically calibrated for Liquid Propane systems.
• Millivolt Generation: Integrated thermopile provides consistent voltage to operate millivolt gas valves during power outages.
• Direct OEM Fit: Engineered to match the mounting requirements and flame patterns of Williams wall furnaces.
• Corrosion-Resistant Leads: High-temperature lead wires prevent oxidation and signal degradation in the combustion chamber.

Is the P322397 compatible with Natural Gas units?
No, this specific assembly is configured for Liquid Propane. Utilizing an LP pilot on a Natural Gas furnace will result in improper combustion and potential safety hazards.

Will this assembly work with the Monterey Top Vent 5009821 model?
Yes, the P322397 is the primary replacement pilot generator recommended for the Monterey 5009821 LP furnace series.

Does this part require external electrical power?
No, as a millivolt pilot assembly, it generates its own small electrical current from the heat of the pilot flame to power the gas control system.

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.