Unvented cylinder constantly dripping (Ed.)

[Doc_Jam]

Hi All

Hoping for a bit of plumbing help. Our tundish is always dripping.

It always (and I mean always) drips, 24/7 but since the heating has been back on its more like a flow of water as pictured. I assume its an overflow from the hot water tank but I dont understand why it would always be dripping. There is a pipe outside our house where I assume the water runs to and the path where the water exits is almost always wet if not puddling. This has been since we moved in a couple of years ago, its just suddenly gotten worse with the cold weather and heating being on.

I am getting a plumber out but as with all things it would be amazing to understand what it is before hand so I can ensure I am getting the right assistance.

Can anyone explain to me what this is and if the severe dripping is a serious issue or not?

Many thanks in advance.

 

[ptarmigan]

Sorry not a plumber but watch it doesn't freeze in this weather where it exits the house.

 

[CBW]

You have a minimum of an expansion related issue, if it was serviced annually by a G3 registered engineer, you wouldn’t have this issue.

 

[lostinthelight]

.

 

[Madrab]

Yup, +1 ... get someone it to service the cylinder, part of that work will be to check the EV and PRV/TPRV, any one of which could cause that.

 

[Doc_Jam]

Thanks for all your responses