Navien bh2203001a Black Gas Tube 550L

Product Description

The Navien bh2203001a is a black gas tube designed for use in Navien condensing water heater and boiler systems. This component serves as an internal gas pipe, routing fuel gas within the appliance to support proper combustion. It is a direct OEM-style replacement part, suited for licensed plumbers and HVAC technicians performing internal gas supply repairs or appliance servicing. The 550L designation refers to the tube length specification as defined by the manufacturer. Technicians working on Navien condensing units will recognize this tube as a precision-fit internal component.

This gas tube is intended for internal installation within Navien condensing tankless water heaters and combination boiler systems. It is not a field-supply gas line — it is an internal appliance component replaced during manufacturer-specified repair procedures. Service technicians performing warranty or post-warranty repairs on Navien CSM-series appliances will encounter this part as a serviceable item within the gas train assembly.

Key Features

• Black finish internal gas tube rated for appliance fuel gas routing
• OEM replacement part with 550L length specification
• Designed for Navien CSM-series condensing appliances
• Direct factory-spec fitment for internal gas pipe replacement

Compatibility

Designed as an OEM-style replacement gas tube for Navien CSM-series condensing water heater and boiler appliances, consistent with the supplier designation CSM BLK in the product reference.

Installation Notes

Installation must be performed by a licensed plumber or qualified HVAC technician in accordance with applicable local codes and the manufacturer service documentation. Shut off the gas supply and disconnect appliance power before beginning any internal disassembly. Verify all connections are leak-free using an approved gas leak detection solution before restoring gas flow and returning the unit to service.

Technical Specifications

• Color: Black
• Length Designation: 550L
• Application: Internal gas pipe, condensing appliance

Standard Information

• Brand: Navien
• Manufacturer Part Number: bh2203001a