How to Refill Pressure in a Viessmann Vitodens 111 Boiler

✨ The discussion revolves around refilling the pressure in a Viessmann Vitodens 111 boiler, which had dropped below 1 bar. Users sought clarification on which valve to use for adding water. It was noted that the manual may not provide clear instructions, but one user identified that the right knob is for water admission. Another user confirmed that both valves need to be turned counterclockwise to refill, with a recommendation to achieve a pressure of 1.2 bar while ensuring the boiler is not running. Users shared their experiences, indicating that the process may be slow and suggested placing a bucket underneath to catch any drips during refilling.
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