Hi guys
Non expert female here, my radiators are hot at the bottom but cold at the top. Bleeding the radiators neither gives me air rushing out or water. So I checked my pressure on my boiler and it's zero ! How do I get the pressure increased please - I have large round cover with square Riello cover below. Is there a hose/valve I have to open - if so where is it, and which way do I turn the valve? Sorry to sound dence but I'd hate to get it wrong and break it :-(
Thanks v much

Kaz, November 2011