Search results

I'm about to refill my (open vented) central heating system and have bought Fernox MB-1 (4 litre bottle) to add to the system. Instructions on the bottle indicate this is enough for an average (100 litre) system of up to 10 single panel radiators. When draining the system I estimated the volume...

My central heating is an open vented system and is about 35 to 40 years old. It has been cleaned (with Fernox F3) and then drained down, so has been empty for some months now. I'm thinking about leaving it empty and unused over summer (I wont be needing any hot water from taps over that period)...