Hi
I have a gravity-fed system I have flushed it out a couple of times and it has had x400 in the system for the last 4 weeks.
There was one radiator with stubborn flow left which doesn't heat up enough, it has 8mm pipes which I think is the problem, rather than the rad as I have had the rad off and it has good flow with a hose pipe.
I put a Fernox Powerflush pump on with forward flow today but I am just getting hot water in the heater tank and it goes to the header tank overflow. Reverse flow is ok.
What should I do to remedy and flush out the system?
I could put a valve on the expansion overflow to somehow limit the flow but a still allow expansion overbiously thats not strictly legit blocking an expansion......
I wante to increase the concentration of x400 to a higher convcentration and have the one stubborn rad being circulated to try and remove the pipe sludge.
I have a gravity-fed system I have flushed it out a couple of times and it has had x400 in the system for the last 4 weeks.
There was one radiator with stubborn flow left which doesn't heat up enough, it has 8mm pipes which I think is the problem, rather than the rad as I have had the rad off and it has good flow with a hose pipe.
I put a Fernox Powerflush pump on with forward flow today but I am just getting hot water in the heater tank and it goes to the header tank overflow. Reverse flow is ok.
What should I do to remedy and flush out the system?
I could put a valve on the expansion overflow to somehow limit the flow but a still allow expansion overbiously thats not strictly legit blocking an expansion......
I wante to increase the concentration of x400 to a higher convcentration and have the one stubborn rad being circulated to try and remove the pipe sludge.
