A
aitchpp
Hi, I live in a one bed flat and have a sealed central heating system with 4 rads and a Vaillant Ecotec combi boiler. To enable decorating, I have taken two radiators off my walls after completely draining the system. I have also changed an old lockshield valve to one that includes a drain (had to drain straight from one of the rads this time). I know I have to add inhibitor when i re-fill the system and have bought 1 litre of Sentinel (not concentrate) and a Screwfix filling kit, but I am still unsure of how best/easiest to go about inserting the inhibitor. I don't know the exact make of my rads but I think they could be Stelrad as they also have slatted tops and sides held on with plastic clips that don't seem to allow easy removal of the sides even though they are supposed to (?). Some google searches have turned up advice to take out both the bleed valve housing and the blank plug from the top of one of the rads and pour it in but I don't think I can get a wrench around the large nuts without taking the sides off which looks very difficult. Also there is a right angle turn into the top of the rad straight after the hole. Another option I found is to turn the radiator upside down and fill from the bottom valve entry point, put the valve back, keep both closed when I turn it the right way up and somehow lift the rad onto its brackets while also ensuring the pipes go into the undersides of the valves first go ! Filling this way would be easier but not putting the rad back. I suppose this is feasible if I get someone to help me but is it a sensible thing to do ? Any better suggestions ? Anyone have experience of the Screwfix filling kit and how to use it please ? Also is 1 litre too much, some google search answers have suggested 1/2 litre for a flat like mine (no harm keeping the other half for top ups in future).