Lochinvar & A.O. Smith 100163254 Kit

The Lochinvar 100163254 Air Inlet Kit is a critical OEM component designed for the proper induction and ventilation of Knight Heating Boilers and Armor Commercial Water Heaters. Specifically engineered for the KBN399 and AWN399 series, this kit ensures the combustion system receives a steady, laminar flow of intake air to maintain optimal fuel-to-air ratios. As a direct replacement for the legacy kit 399, it facilitates the safe transition of air through the polypropylene venting or PVC piping connections required by the 100163254 specification. Field technicians rely on this kit to prevent pressure switch nuisance trips and ensure the modulating burner operates within factory parameters. This assembly supports high-efficiency condensing performance by maintaining the integrity of the intake path, crucial for gas boiler maintenance and commercial HVAC venting reliability in demanding mechanical room environments.

Key Benefits

• OEM Compatibility: Precision-fit for Lochinvar Knight KBN399 and Armor AWN399 units to ensure sealed combustion integrity.
• Optimized Airflow: Engineered to minimize intake resistance, supporting stable flame signals and high-turndown efficiency.
• Durable Construction: Built to withstand the thermal cycling and humidity levels common in high-efficiency mechanical systems.
• Direct Replacement: Simplifies service calls by replacing the original 100163254 and KIT30053 air inlet components without field modifications.

Common Questions

Which models are compatible with this air inlet kit?
This kit is specifically designed for the 399,500 BTU models within the Lochinvar Knight (KBN) and Armor (AWN) product lines. Always verify the model and serial number prefix before installation.

Is this the correct part for a 4-inch venting setup?
This kit is intended for the standard intake configuration of the 399 series models; refer to the unit's specific installation manual to ensure vent sizing matches the 100163254 adapter specifications.

Does this kit include the gasket and mounting hardware?
The 100163254 kit typically includes the primary inlet transition and necessary seals required to restore the intake path to factory standards.

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.