The Viessmann 60/100 to 80/125 Flue Adaptor is a high‑quality transition component designed to convert a standard 60/100mm concentric flue system into a larger 80/125mm system. This adaptor is ideal for installations that require upgraded flue capacity, longer flue runs, or improved airflow performance. Manufactured to Viessmann’s exacting standards, it ensures a secure, airtight connection between differing flue diameters, maintaining maximum safety and boiler efficiency.

Key Features

• Converts 60/100mm concentric flue systems to 80/125mm

• Supports longer or more demanding flue runs

• Ensures airtight and watertight connection between flue sizes

• Suitable for Viessmann condensing boilers including Vitodens models

• High‑quality, corrosion‑resistant construction

• Helps maintain correct boiler performance by reducing flue resistance

• Simple push‑fit design for easy installation

Technical Specifications

• Input Diameter: 60/100mm concentric

• Output Diameter: 80/125mm concentric

• Type: Flue size transition adaptor

• Material: High‑grade, corrosion‑resistant construction

• Application: Increasing flue size to accommodate extended or complex routing

• Compatibility: Viessmann 60/100 and 80/125 concentric flue systems