Viessmann 7664144 Flue Elbow 80/125

Product Description

The VIESSMANN 7664144 is a flue elbow designed for coaxial vent systems using an 80/125 configuration. This fitting redirects the flue gas exhaust path within a concentric vent assembly, allowing installers to route combustion air and exhaust through a single termination point. It is a replacement or system-build component used in direct-vent heating appliance installations. HVAC technicians and heating system installers work with this type of fitting when assembling or servicing vent systems on high-efficiency boilers and combination appliances.

The 7664144 flue elbow is suited for use in residential and light commercial heating applications where a coaxial 80/125 vent system is specified. The 80/125 designation refers to the inner diameter of 80 millimeters and the outer diameter of 125 millimeters in the concentric pipe arrangement. This elbow provides directional change capability within the vent run, accommodating installation layouts that require offsets from vertical or horizontal termination points.

Key Features

• Coaxial 80/125 configuration supports concentric combustion air and exhaust routing
• Designed as a flue elbow for directional changes in the vent assembly
• Compatible with VIESSMANN direct-vent heating system vent components
• OEM part number 7664144 ensures correct fitment within the intended vent system

Compatibility

Designed as an OEM-style replacement or system component for VIESSMANN heating appliances using an 80/125 coaxial vent configuration. Consult the appliance installation manual to confirm vent system compatibility before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified heating contractor familiar with direct-vent and concentric vent system requirements. Shut down and de-energize the appliance before servicing or modifying the vent assembly. Follow the appliance manufacturer's venting instructions and all applicable local mechanical codes when assembling flue components. Ensure all vent joints are properly secured and sealed per the manufacturer's guidelines to prevent exhaust leakage.

Technical Specifications

• Vent Configuration: Coaxial 80/125
• Component Type: Flue Elbow

Standard Information

• Brand: VIESSMANN
• Manufacturer Part Number: 7664144