Halstead boiler pressure - which valve and how? Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[Cheezy2]

Hey,
My Halstead EDEN CBX 32 boiler has lost pressure. I’ve been easily able to add pressure to other boilers in the past, but this one doesn’t seem to have taps on the filling loop.

Which valves do I turn, and how do I turn it? I’ve tried with a screwdriver but they don’t move. Am I suppose to have a special key or something?

Thanks,
Matthew