Williams P322398 Pilot Assembly
The Williams P322398 Pilot Assembly is a genuine OEM PowerPile generator component engineered specifically for natural gas gravity direct-vent wall furnaces. Designed as the direct factory replacement for the discontinued P323415, this assembly is essential for millivolt-controlled systems that operate independently of external electrical power. It features a high-output 750-millivolt thermopile that converts thermal energy from the pilot flame into the electrical current required to hold the main gas valve open. This unit is configured with a 90-degree left orientation for precise alignment within the combustion chamber and is compatible with 22,000 and 30,000 BTU models, including series 1403822, 2203822, and 3003822. By ensuring a consistent ignition source and accurate flame sensing, the P322398 resolves common field issues such as pilot flame drop-out and main burner ignition failure, maintaining the safety and operational efficiency of the heating system.
Key Benefits- Direct OEM Replacement: Replaces part number P323415 with exact factory specifications for a seamless fit.
- Millivolt Compatibility: Integrated thermopile provides reliable voltage for standing pilot systems.
- Precision Geometry: 90-degree left configuration ensures optimal flame-to-generator contact.
- System Versatility: Engineered for use with Williams Gravity Direct Vent Wall Furnaces (22k and 30k BTU).
- Safe Operation: Maintains consistent heat output by ensuring stable burner ignition.
Will this work with a propane (LP) unit?
No, the P322398 is calibrated specifically for natural gas systems. Using it with propane may cause improper combustion or system failure.
Does this assembly include the replacement gasket?
The P142700 gasket is required for a complete seal but is typically sold separately. It is recommended to replace the gasket during the installation of a new pilot assembly.
What symptom does this part solve?
If your pilot stays lit but the main burner fails to ignite when the thermostat calls for heat, the thermopile in this assembly may no longer be generating the required 750mV 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.
QUESTIONS & ANSWERS
Ask a Question-
Does this include the gasket?
No it does not include a gasket.
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Is this pilot assembly natural gass
Yes, it is for natural gas.
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Does this assy. work on propane furnace?
We would say no but please double check with Williams tech support on this one.
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Will this fit on a model 1403822 serial number 36169971D
This unit is too old. We are not able to ID parts.
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I have a Williams furnace Mod. 1403822, SN29146380D, converted from NG to propane with kit #8939. Want to replace thermopile. I'd just like to replace the thermopile without having to do the entire assembly if possible. If not, I received info from the store where I purchased it and they recommended Williams pilot assembly P323700, however my Manual recommends P322398. I'd just like to get the right part and it looks like both are available. Please advise. I'd also like to get the P142700 gasket and a couple of P100100 observation door gaskets (or replacements). Thank You.
P322398 is the one for 1403822.
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Does this work for model #3003622?
Yes it will.
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What does the product actually look like I need to look like the picture
It looks like what it is in the picutre however they all look similar so please reply with your unit model and serial numbers if in doubt so we can check with factory. Thank you.
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Will it fit model number 3509622? If not Do you have one that will fit?
P501617 is the one for model 3509622 and here is the link of this part:
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The Williams part # for the gasket is P142700 (just an FYI).
Thank you and we will update the system.
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Propane conversion kit for this unit
We will need the model and serial numbers off the unit to checl. Thanks