Don't drink from radiators

[Mosstrooper]

just a thought

whats the water that comes from a condensing boiler ?
mine just goes down the drain !!

[Skean Dhude]

Thanks NR,

I've never had that in my radiators. The only time we bleed them is when we have had to empty them for decorating or damages.

I can see however that it depends what they are made of and when they were last flushed.

Still wouldn't drink any water from there though.

[Luci_ferson]

The sludge comes from anaerobic bacteria and disolved metals from the system such as copper, iron, zinc etc, remember some heating systems treatments contain heavy metals and carconogenics.

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Note that when you have to frequently bleed air from your radiators but you know its not leaking its because the gunge in your system is producing hydrogen sulphide, so imagine the shite in the water !!

i knew the first bit, but had no idea about the hydrogen sulphide.
youve just solved one of my little mysterys. think i better drain the entire system and refill with soe preserver in. i have to bleed my radiators about every 2 months and i know it isnt leaking.

[NorthernRaider]

You can often ignite the gas as it vents out of the bleed nipple BUT BUT BUT (A) The flame in invisible but ferkin hot and (B) If theres a lot of gas you can cause an explosion.

[Skean Dhude]

Best venting it and not taking too many risks then. If I remember sulphur is the vile smelling stuff isn't it. Don't need a light just a nose.