how do i top up my 24i worcester combination boiler?
There should be a filling loop system of some sort either on or adjacent to the boiler. I may be built in on the lower front of the boiler and has a special key to be inserted to complete the loop or it may be generally a silver coloured flex hose under the boiler usually with a slotted head valve to insert a screwdriver to open and some have a valve both ends of the flex. When you have sorted this part out fill to 1 bar or 14lbs pressure cold.
