Sentinel x100 and sealed heating systems

[greenc]

Got a sealed heating system and i've attempted to inject some sentinel x100 into the top of a rad exactly how i was told by the merchant and the instructions on the tube and yes its ended up everywhere but in the radiator, surely there's a better method than this ? There are no towel radiators either in the system

 

[kevplumb]

1 close both valves

2 open bleed screw to release pressure

3 screw cartridge into rad

4 open 1 valve pump into system

5 close valve

release pressure on the gun slowly

6 remove gun replace screw

7 open valves again

shouldnt lose much or make a mess

if you want to be double sure reduce system pressure before you start to app 1/4 bar

and repressurise afterwards

 

[petit_pablo]

If you had got the fernox inhibitor tube for skelton gun then it comes with an attachment for filling loops. Much easier and less messy

 

[David937]

I have found that it helps to release some pressure from the system before injecting the chemical, when I didn't release pressure it splattered everywhere when I removed it from the bleed point.