Flushing WC radiator

[C.K]

Hi, I haven't purchased any deionized water yet, but I am currently mounting my radiator. Before doing so, is it ok to flush the rad with normal tap water?

Cheers
Adam

 

[thecomputerguy]

distilled water and a bit of whie vinegar pref

 

[C.K]

I know that’s what’s preferred, but I’m asking if it’s ok to flush with tap water instead.

Thanks

 

[TheCenturion]

It's fine to flush the rad with tap water, but you might want to get hold of some deionised/distilled water to do a final flush of the rad

Make sure that the water is hot, but not boiling. No need to use vinegar anymore as the flux is now soluble in water.

 

[JonJ678]

It'll dissolve faster in vinegar I imagine, but then brass is probably soluble in vinegar (to some extent) too.

Hot tap water then deionised will be fine if you're in a soft water area, not as good a plan if you're in a hard water area. It'll still work though, and boiled hard water doesn't have that much more limescale to give up.

I tend to connect a hot tap to one of the radiator inlets and wander off for a bit, but that's not brilliant in terms of energy efficiency.