Lochinvar & A.O. Smith 100312669 UIM Ethernet

The Lochinvar & A.O. Smith 100312669 UIM Assembly with Ethernet is a critical OEM replacement part engineered for BTH and MXI series high-efficiency commercial gas water heaters. As a factory-programmed User Interface Module (UIM), this component ensures precise local control and advanced remote diagnostic capabilities via its integrated Ethernet connectivity. Designed to maintain the operational integrity of systems ranging from 120,000 to 250,000 BTU, this 100312669 service kit replaces outdated or failing display boards that compromise boiler management and temperature regulation.

For service technicians and contractors, this genuine A.O. Smith part arrives in original factory packaging to guarantee out-of-the-box compatibility with existing wiring harnesses. It facilitates seamless integration with building management systems, allowing for real-time monitoring of performance metrics and rapid troubleshooting. Utilizing authentic HVAC repair parts like this assembly prevents communication errors and firmware mismatches often associated with third-party components, ensuring your commercial DHW (Domestic Hot Water) system operates at peak thermal efficiency.

Key Benefits for Technicians:

• Direct OEM Replacement: Matches exact specifications for Lochinvar and A.O. Smith BTH 120(A) through 250(A) models.
• Pre-Programmed Firmware: Eliminates the need for complex field programming or manual parameter entry during installation.
• Integrated Network Port: Enables stable Ethernet-based monitoring for remote diagnostics and system alerts.
• Enhanced Durability: Built to withstand the high-temperature environments of commercial mechanical rooms.
• Plug-and-Play Installation: Designed with standard pin connectors for a secure, high-integrity electrical bond.

Common Questions Regarding the 100312669 UIM:

Is this module compatible with all commercial gas models?
This specific assembly is engineered for the A.O. Smith Cyclone MXI and Lochinvar BTH series. Always verify your specific model number and serial prefix to ensure the 100312669 is the correct UIM display module for your unit.

Does this unit require a separate Ethernet adapter?
No, this 100312669 UIM assembly features a built-in Ethernet port on the control board, allowing for direct network connection without additional hardware.

Can I use this to replace a non-Ethernet UIM?
In many cases, this assembly serves as an upgrade for older display versions; however, proper communication with the central control board must be cross-referenced via the manufacturer’s service manual.

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.