Where is the control to raise pressure on a Worcester 28Si II boiler. I ned to raise the pressure as its at 0 after bleeding the radiators. I have a plastic key but no idea where to put it.

Debbie, October 2008

it is a internall filling loop, that is situated underneath
near the front like a black unit where key goes put in key turn i think half turn then there should be a little knob that you turn on the same black unit to open /close filling loop, the black unit connects to your cold feed and return pipework hope this helps

regards
julian

jdavenport161@yahoo.com

julian, October 2008

look underneath, there is a black plastic fitting wih a white plastic nut. insert key in hole next to it. push it right up and lock into position. open white plastic nut and it will fill up

lee, October 2008