3" Vent Termination Kit for Side Wall

Rheem SP20286 Vent Termination Kit – Horizontal Discharge Solution for Tankless Water Heater Systems

The Rheem SP20286 is a horizontal vent termination kit designed for use with select Rheem tankless gas water heaters. Engineered for safe and efficient exhaust discharge, this kit ensures compliance with manufacturer venting specifications and applicable mechanical codes. It is intended for through-the-wall installations in residential or light commercial applications.

Product Purpose and Application

This kit provides a sealed and properly spaced termination point for twin-pipe vent systems, directing combustion gases to the exterior while preventing air intrusion or recirculation at the termination site. It is designed to complete the exhaust line for high-efficiency condensing water heaters operating in a direct vent configuration.

Core Features and Performance Benefits

• Factory-Specified Termination: Approved for use with Rheem condensing tankless models; ensures proper system operation and maintains listed performance values
• Material Integrity: Constructed of high-grade corrosion-resistant components suited for extended outdoor exposure
• Backdraft Prevention: Incorporates integrated design elements to minimize risk of cold air ingress and moisture-related damage to the combustion chamber
• Horizontal Configuration: Designed for side-wall installations; provides the required exhaust clearance and deflection angle
• Mechanical Code Alignment: Manufactured in accordance with venting clearances and safety requirements for Category IV appliances

Technical Specifications

• Vent Orientation: Horizontal (side wall)
• Application: Direct vent condensing water heaters
• Compatibility: Rheem RTGH series and other approved models (verify per submittal documentation)
• Construction: UV- and corrosion-resistant termination hood and mounting hardware

Installation Guidance

This kit is intended for professional installation in accordance with the manufacturer’s installation manual and local mechanical and gas code requirements. Proper clearance to grade, building penetrations, and other vent terminations must be maintained. Sealant and fasteners for attachment to the vent pipe and exterior wall may be required, depending on surface material.

Contractor Use Notes

For licensed professionals, the SP20286 simplifies code-compliant vent terminations for new system installations or retrofits. It ensures system longevity by preventing exhaust recirculation and water intrusion at the discharge point. This kit should be stocked for any installation involving a horizontal discharge through siding, masonry, or other exterior wall materials.