This controller requires a clean

this component allows for an outlet pressure range of 20-42" w

this direct replacement part (also identified as S8600M3001 or 9004544205) operates on a standard 24V 60Hz electrical loop

This is a Uni-Flo liquid line drier

Lochinvar & A.O. Smith 100293702 Control Board 319848-301 This controller requires a cleanThe Lochinvar & A. O. Smith 100293702 Control Board is the primary integrated boiler control designed for precise HVAC system management in high efficiency commercial and residential units. As a direct OEM replacement part, this board is engineered to oversee the full sequence of operation, including ignition control, flame sensing, and temperature regulation. It is a critical component for technicians servicing Lochinvar Power Fin and A. O. Smith PBL