So, I appear to have a pressurised system boiler heating system - a boiler in a downstairs cupboard, a pressurised storage tank in the loft, and then what appears to be an expansion vessel and some sort of sanitary filter (a white Zilmet canister marked as a 110 Ultra-UV-HT-Pro). There is no open plastic F&E tank.
There is a direct feed into the expansion vessel. Can I use this to inject inhibitor direct into the central heating system, eliminating the need to drain down? I was looking at using Fernox F1 Express.
There is a direct feed into the expansion vessel. Can I use this to inject inhibitor direct into the central heating system, eliminating the need to drain down? I was looking at using Fernox F1 Express.