The 14004136-001 is a direct replacement for the 14004136-001/U model

it includes a single-stage gas valve configuration with a 2

It is commonly used in indirect-fired furnaces and make-up air units requiring space temperature control

Direct Replacement: Replaces deprecated part number 9004520215

Lochinvar & A.O. Smith 100163254 Kit 328140-751 The 14004136-001 is a directThe 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