Added Fernox for 2 days & Drained Flushed

[Oneilly]

Hi guys looking for a little advice. 14 year old house, suspect the system has had little maintenance.

I added fernox cleaner left for 2 days then drained & flushed, just checked next day and the water is dirty again?


Should I repeat exercise ?

 

[Puddle]

If still dirty ,you do not say which fernox cleaner you are using,but yes,I would leave longer than two days,should run 48 days hot,which if you have on 8 hours a day is at least 5 or six days
Also many make the mistake of trying to flush through a normal system drain cock,this is no good,fit a good full bore drain point,to allow system to be flushed out correctly

Keep a eye on all fittings for leaks and take your time when flushing out system

imho

 

[Oneilly]

Thanks, F3 cleaner, will do.

 

[Billy Bob Bob]

i agree fully with puddle,2 days not enough if very sludged up

 

[Oneilly]

I always planned to leave for a week and then got a blocked Rad and found myself draining down, silly me, oh well off to plumb centre again lol

 

[Billy Bob Bob]

what boiler is it? sentinel x800 is good stuff but aggressive

 

[Puddle]

Before you add some more chemical ,flush out as mush sludge/black water ect as possible from the system,chemical will be more effective then

 

[Oneilly]

Gas Man a 14 year old ideal Classic ff260.

Puddle, thanks yes I have given it a good flush, lots of rubbish came out.

 

[Billy Bob Bob]

x 800 should be fine but read the instructions it is good stuff

 

[Oneilly]

Gas Man, how long do you suggest I leave it in for?

 

[Billy Bob Bob]

with x800 its min 2 hours but i think max is a week it will say on the bottle i only use it as a last resort it kills aluminium boilers ,but it fully removes the crud its potent stuff!

 

[Oneilly]

Not sure if my boiler is Ali or not.

 

[Billy Bob Bob]

no its cast iron

 

[Oneilly]

Thank You

 

[Billy Bob Bob]

no probs oneilly hope this sorts it,but puddles advice will help as well