Recent content by boilerproblem

had another look. There are five main pipes all going in the same direction into the boiler. The 4th from the left is labelled Cold Water Mains and the one to the right of that CH Return. The hole the key was in is just to the right of the front end of the Cold Water Mains pipe but seems to...

I've just had another good look. I can't find any more valves. just the one that the key fits. I've opened it and closed it again but nothing. No apparent water flow. I think I'm missing something obvious.....

It's a 828 Turbomax

Can anyone help. I have a vaillant boiler that comes with a Vaillant key apparently for opening the valve to fill the system using the internal filling loop. I read on a DIYNOT forum that i just had to open this one valve and that would be it. I did this and heard the sound of water...