Rheem-Ruud RTG20006DW Controller

The Rheem-Ruud RTG20006DW Controller, more commonly recognized in the field as the UMC-117 controller, is the standard for localized management of Rheem tankless gas water heaters. This digital interface is engineered for mid-efficiency and high-efficiency non-condensing systems manufactured since 2010. For technicians, it provides a critical diagnostic portal to view maintenance information and digital display remote error codes, significantly reducing troubleshooting time on the job site. The unit supports a temperature range of 100°F to 140°F, adjustable in precise 2-degree increments to meet specific residential or commercial requirements.

Built with a water-resistant plastic housing, the RTG20006DW is designed for durability in mechanical rooms and high-humidity environments. This wired remote control utilizes a non-polarity sensitive two-wire connection, typically requiring 18 AWG thermostat wire for a clean, stable signal back to the tankless water heater control board. Systems can be configured with up to three remote controls to provide multi-point access throughout a facility, ensuring consistent precise temperature control and system monitoring from various locations.

• Advanced Diagnostics: Simplifies repairs by providing immediate access to real-time internal maintenance data and fault history.
• Broad Compatibility: Seamlessly integrates with Rheem residential tankless gas models, specifically replacing older RTG20006EF units.
• High Accuracy: Digital temperature calibration from 100°F to 140°F ensures exact water output for safety and comfort.
• Parallel Control: Allows for the installation of multiple priority remotes (BATH1, BATH2) for complex layouts.

• Can this controller be used with any tankless brand? No, the UMC-117 is a proprietary OEM part designed strictly for Rheem and Ruud branded tankless gas units.
• Why is the screen blank after installation? Ensure the front cover is fully seated over the base plate and that the two-wire connection points on the internal PCB are secure.
• Does it require a separate power supply? No, the unit is powered directly through the low-voltage communication wire from the water heater.

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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.