Lochinvar & A.O. Smith 100173793 Arm Assembly L99H008 optimized for the airflow requirements

optimized for the airflow requirements of standard PTAC chassis

maintaining long-term system stability and thermal efficiency

Use the central clockwise minute hand to set the current time of day

As the direct replacement for HN61KL023

optimized for high-capacity flow without sacrificing sensitivity

Lochinvar & A.O. Smith 100173793 Arm Assembly L99H008 optimized for the airflow requirementsThe Lochinvar & A. O. Smith 100173793 Arm Assembly is a critical OEM replacement part engineered for high efficiency commercial boilers and heating systems. As a veteran grade gas air arm assembly, this component ensures the precise mechanical alignment necessary for optimal combustion and fluid regulation. Specifically designed for compatibility with Lochinvar Knight series models (including KBN, AWN, and SNA 500), this assembly facilitates the