Inhibitor for cast iron boiler

[camerart]

Hi,

I've been cleaning my central heating system, and soon I will need to add inhibitor. I've just bought some X100 and now I'm wondering if this is ok for a cast iron boiler. I assume the cast iron is the cause of all of the black sludge I've just cleaned out of the system.

Cheers, Camerart.

 

[jtsplumbing]

It's from radiators as well, X100 should be ok, I use Fernox myself, what did you use to clean system ??

 

[camerart]

It's from radiators as well, X100 should be ok, I use Fernox myself, what did you use to clean system ??

First I used my plumbers merchants own make, I had doubts so I also used x400. Both failed to get it clean so I removed the hot water tank and flushed it with a hose pipe also down the 28mm pipes through the boiler.

 

[jtsplumbing]

What about radiators ? did you flush them ? best to remove each one and flush with hose pipe, waste of time putting inhibitor in if system still full of dirt ! Use F5 cleaner, F3 inhibitor

 

[camerart]

What about radiators ? did you flush them ? best to remove each one and flush with hose pipe, waste of time putting inhibitor in if system still full of dirt ! Use F5 cleaner, F3 inhibitor

Ok, but I think it's pretty clean now, the rads are hot all over.

I've bought X100 now, so I'll have to use it. I also have a ltr of My plumbers merchants own brand, I was now going to use it, but do you think I can mix them for a better strength?

Cheers, Camerart