Tankless Commercial Conversion Kit

RTG20224A Commercial Retrofit Kit for Rheem Tankless Water Heaters

The Rheem RTG20224A is a factory-specified commercial conversion kit engineered for use with select Rheem tankless gas water heaters. This kit is designed to modify a residential or light-commercial unit to meet the operational and safety requirements of commercial-grade service. The components included in this kit enable the system to accommodate higher demand loads and extended duty cycles typical of commercial water heating applications.

Primary Application

This conversion kit is intended for field installation to reconfigure compatible Rheem tankless models for commercial operation. Once installed, the unit’s controls and performance parameters will align with commercial standards, enabling continuous hot water output and system durability under elevated usage conditions. This is a critical upgrade for facilities requiring high-volume water delivery such as restaurants, healthcare centers, or multi-unit buildings.

Included Components

• Revised controller module (if applicable)
• Labeling to designate commercial application
• Documentation for commercial compliance and programming adjustments

Technical Specifications

• Part Number: RTG20224A
• Use Case: Converts designated Rheem tankless models for commercial use
• Compatibility: Model-specific; confirm with Rheem engineering bulletin or tech sheet
• Construction: Engineered components for extended duty cycle operation

Installation Requirements

Installation must be performed by a licensed plumber or HVAC professional familiar with gas appliance conversions. System gas input, venting, water pressure ratings, and clearances must be verified to meet commercial specifications. Following conversion, the installer must complete system programming and update identification tags per Rheem’s service protocol. Failure to install per manufacturer instructions may result in system malfunction or voided warranty coverage.

Professional Guidance

• For Contractors: This kit supports field adaptation of stock tankless units to commercial service, eliminating the need for pre-configured commercial SKUs in inventory.
• For Service Technicians: Use this kit when adapting units during a system redesign or load upgrade. Ensure electrical board firmware and gas calibration align with commercial specs post-installation.

Key Advantages

• Enables Commercial Duty Operation – Converts residential-use models for high-demand service environments
• OEM-Approved – Ensures compliance with Rheem design and certification standards
• Streamlined Field Retrofit – Reduces lead time by repurposing existing stock with minimal downtime
• System Longevity – Supports continuous operation without compromising performance or efficiency