Oh right I was wondering what was going on, cheers.
The strange thing is I've drained a few rads over the years and have never had to manually top up the system, I can't even find a filling loop.
Vessel is red, hot water cylinder looks similar to this one
http://shsdirect.co.uk/media/catalog/product/cache/1/image/800x800/9df78eab33525d08d6e5fb8d27136e95/3/6/3616il_7.jpg
Hi,
I have a F&E tank in the loft and an expansion vessel in my airing cupboard.
Does this mean my heating system is open vented and the expansion vessel is for hot water only?
Thanks