Rinnai FSWPT4SP Indoor Wall Pass Through 98 Series

Product Description

The RINNAI FSWPT4SP is an indoor wall pass-through fitting designed for use with Rinnai R98i Series non-condensing tankless water heaters. Manufactured by ProTech under the FasNSeal product line, this component is constructed from AL29-4C superferritic stainless steel, a material engineered for extreme resistance to chloride ion pitting, crevice corrosion, stress corrosion cracking, and general corrosion in both oxidizing and moderately reducing environments. The fitting measures 4 inches in diameter and accommodates wall thicknesses from 4.5 inches to 8.5 inches. It is installed by licensed plumbers or HVAC technicians during tankless water heater venting system setup or retrofit projects.

This wall pass-through is intended for indoor installations on residential or light commercial structures where the R98i Series non-condensing tankless water heater requires a properly sealed vent penetration through an exterior or interior wall. The FasNSeal push-to-lock design makes it well suited for new construction and replacement applications where the vent system may need to be disassembled for inspection, maintenance, or rerouting. The component integrates directly into the FasNSeal venting system, ensuring a continuous and code-compliant vent assembly from the appliance to the termination point.

Key Features

• AL29-4C superferritic stainless steel construction resists chloride ion pitting, crevice corrosion, and stress corrosion cracking
• Built-in mechanical locking band and gasket create air-tight and water-tight joints without additional sealants
• Push-to-stop-bead assembly system allows installation in seconds and disassembly in minutes for maintenance or rerouting
• Accommodates wall thicknesses from 4.5 inches to 8.5 inches
• 4-inch diameter matches the venting requirements of the Rinnai R98i Series non-condensing tankless water heaters
• Compatible with the FasNSeal venting system for consistent, modular vent assembly

Compatibility

Designed for use with the Rinnai R98i Series non-condensing tankless water heaters as part of the ProTech FasNSeal indoor venting system.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician in accordance with applicable local codes and the appliance manufacturer's venting guidelines. Shut off the water heater and allow the vent system to cool completely before beginning work. Push components together firmly to the stop bead before tightening the integrated mechanical locking band to ensure a proper air-tight and water-tight seal. Do not use sealants, adhesives, or screws on FasNSeal joints, as the locking band and gasket system is designed to function without them.

Technical Specifications

• Diameter: 4 inches
• Height: 10 inches
• Width: 10 inches
• Wall Thickness Range: 4.5 inches to 8.5 inches
• Material: AL29-4C Superferritic Stainless Steel

Standard Information

• Brand: RINNAI
• Manufacturer Part Number: FSWPT4SP