I have to repressurize my Vaillant Aquaplus gas boiler, and I couldn't understand from the manual where exactly the internal filling loop should be fitted.
The water pipes don't have any valves directly on them, but the manual states that this model should be equipped with an internal filling loop.
However, I don't see one and I don't see how I would fit one here:
Can you please clarify where I should fit the flexible loop? This answer mentions a flexible silver pipe but I don't see it in the original picture.