Ice buildup on vent - Extreme low temperatures

What does Ice buildup on vent mean?

Extreme low temperatures can cause ice to build up on the side wall or vertical venting termination, potentially obstructing the boiler's exhaust or air intake.

• Extreme low ambient temperatures

Click steps to track your progress.

1. 1

   Regularly inspect side wall and vertical venting terminations for ice buildup during cold weather.

2. 2

   Carefully remove any ice buildup from the venting screens to ensure clear airflow.

3. 3

   If persistent issues occur, contact Viessmann for information on field modifications for venting screens.