wood boiler de-scale

[frank horton]

Happy new Year to u all.......

have a wood boiler for central heating n hot water......Kiturami 30.......came with the house we just bought...
quite a big unit for a 4 bed house.......
now it at least 10 years old.....we have slightly hard water...
so with the amount of wood we're burning in relationship to the output I rekon the heat exchnger might need a descale......
would prefer to just do the boiler (it's an open system, with expansion / filler tank in the loft.....
I would like to do the boiler first (independantly) then add a descaler to the system to future proof it......

looked on u-tube etc ...so would like to use a pump and bucket/tank to just keep flushing the h/exchnger....
it's easy to isolate it from the system......
so would isolate the system, drain the heat / ex and then flush with cleaner....
cant tell u what the h/exch is made of but the rest of the boiler looks well put together.....

anyone done this before ?
what would be the best chemical....?
the yanks say a white vinegar solution but cant buy it in 5ltr tubs and to expensive to buy in bottles.....
dont care if I have to pump it for 24hrs as long as it does the job.....
there are chemicals like Ferox ??? but what dilution ??????
any help please......

 

[frank horton]

ps.....I had a wood boiler in France for 16 years......very soft water........
it was a 7 bedroom place and I didn't use this much wood for that.....
in France oak n Chestnut was used for fuel, in Crete its a local hardwood and Olive wood....

 

[gaz1]

what type of boiler are you using / model number/ name

 

[sg66]

If it's new ish stainless steel, not up on foreign boilers.

 

[Rig Pig]

I wouldn't fiddle with it in the middle of winter, I would have a play in the summer.... if it ain't broke don't fix it!

 

[frank horton]

Kiturami 30....30 is for K/watts ??.....made in Korea I beleive.......very popular here .......

 

[julianf]

Harpic (or any other brand) of limescale remover brings up copper pipes etc real shiny.

Just don't leave excess amounts in a ceramic bath though, as it will turn it to sandpaper.

I would consider chucking a load of that in (to the seperated boiler) but, basically, any acid is going to do the job.

 

[Hopefuldave]

When I had the combi descaled a few houses ago the fella used phosphoric acid, had it circulating for about an hour IIRC - it's my acid of choice now for descaling the lav*, plastic bathtubs, around taps etc.

Dave H. (the other one)

*be sure that any bleach is rinsed out with a few full flushes, same after the acid, don't let 'em mix unless you enjoy chlorine gas... Works well as a wood bleach though, outdoors, inside a big plastic bag, 1/2 cup each strong bleach and strong acid... and Run Away.