Hi, can any 1 help please?? Ive got hot water, and sometimes the heating will work but mostly not, a friend who told me he knew wot he was doin said the preasure was to low the problem is is that the gage is behind my new fitted kitchen so it was guess work, my friend let far 2 much water through, im no engineer but even i knew it was 2 much, now no matter what im trying i cant get the heating 2 fire up at all, i know how 2 increase preasure but have no idea how 2 decrease it, i suppose it is decrease as low preasure needs increasing??? Im sorry i ave no idea, please help if u can, thanx x