Vomit smell from water cylinder

[clueless spanner]

Awful vomit smell coming from airing cupboard where hot water storage tank is. I see a leak from a pipe out of cylinder.

Why does it smell so bad? Is it dangerous?

I ve circled the leak. Is that water from the cylinder or to the cylinder?

It’s a communal system with boiler on the roof.

I await the engineers. Tik tok tik tok. I can’t call my own plumbers as they won’t touch communal set ups.

 

[clueless spanner]

Some more photos of the set up

 

[footprints]

Chances are it is the additive in the heating system you can smell it can be unpleasant. Stop the leak should solve it although if that auto vent is operating a lot you may have a smell from the gasses produced.

 

[clueless spanner]

Thanks. I read it could be hydrogen sulfide ?

 

[footprints]

Possibility but if a lot is being produced it suggests a problem with the system, constant refilling or else pumping over/ sucking in air.
Not familiar with your Thermoflow system, but certainty not uncommon if the normal open systems.
Perhaps others will be a bit more up to date than an old retired codger like me.

 

[clueless spanner]

Ok thanks for your input. Old codgers rule!

 

[DP]

Why is the temperature so high?

 

[clueless spanner]

Dunno: I did wonder. What should it be?

 

[DP]

Either gauge is faulty or you need you system looked at.
A gas boiler use to max at 85 degrees with overheat cutout set at 95 degrees C ( mostly)
Condensing boilers start thinking of shutting down around 80 but at that temperature unlike;y to be condensing.

 

[polesapart]

Any solar involved?