i have a glowworm capricorn 240/6 back boiler and when the boiler stat is just off minimum my rads are hot 21c but my water is very hot.when its cold i turn up the stat(a third of the way round) as i have no room stat and the rads get hotter.but the water feels scolding.i am awaiting a zone valve to be fitted to my system but was hoping someone could tell me if it is normal to get so hot and is it dangerous.your thoughts will be greatly appreciated.