hot water

[mcdommo]

hi can someone help i changed a rad and now i only get a little bit of hot water before the boiler cuts out and only some of the rads heat up can anyone help

 

[oldplumber]

you probably have air in your system so bleed all the rads in your house and turn off most of them before starting the boiler so that you circulate water around 2 or 3 first to ensure all the air is out, before opening one at a time and ensure that air is got rid of.

 

[WHPES]

If you are on a gravity system, have you checked that the F&E tank is filling, or if you are on a sealed system, have you checked the pressure in the expansion vessell after bleeding.