Dual-Stage Control: Manages 2-stage heating operations for improved temperature precision and efficiency

making it an essential OEM HVAC replacement part for technicians focused on system uptime and thermal protection

the 504 features a level-actuated pilot valve held by a magnetic action

and catastrophic hydraulic shock

Multi-Speed Versatility: Features a 3-speed tap configuration

Lochinvar & A.O. Smith 100167772 Control Module 320788-703 Dual-Stage Control: Manages 2-stage heatingThe Lochinvar & A. O. Smith 100167772 Control Module is a critical OEM replacement part engineered for high efficiency commercial water heaters and hydronic boiler systems. As a primary digital controller, this module manages the ignition sequence, gas valve modulation, and flame supervision to ensure peak thermal efficiency and operational safety. Designed to interface with the SMART TOUCH and CONXUS platforms, the 100167772 provides consistent