Boiler condenser pipe letting water back

ThisIsWeird

Good stuff.
With the black pipe's end open, it would be very surprising if it was blocked by anything. So I think we can conclude that the rubber reducer just ain't snug enough, and/or the white pipe isn't going through far enough.
So, wipe dry, paper towel, squish some Mait around the white pipe where it disappears, gently pull back the white pipe that 5mm, and force the Mait in as far as you can. Keep pressing as you release the pipe. Give it a nice neat wipe.
Jobbie almost certainly jobbed.

fossman

ThisIsWeird said:

Good stuff.
With the black pipe's end open, it would be very surprising if it was blocked by anything. So I think we can conclude that the rubber reducer just ain't snug enough, and/or the white pipe isn't going through far enough.
So, wipe dry, paper towel, squish some Mait around the white pipe where it disappears, gently pull back the white pipe that 5mm, and force the Mait in as far as you can. Keep pressing as you release the pipe. Give it a nice neat wipe.
Jobbie almost certainly jobbed.

This issue has raised its head again this morning but there is more water coming through.

I can see the water is seeping in around the top of the white pipe, trickling down and pooling on the black pipe and then dripping. Water seeping in from the top of the pipe seems to be defying the laws of gravity.

When I had the boiler serviced last year the guy had a look and said he couldn't see anything wrong, it is service time again so I'll give them a ring and ask them to take a proper look.

ThisIsWeird

The GS will know where to disconnect that pipe from the boiler, so will be able to withdraw it all from the reducer, and check what's going on - is the pipe too short, for example.
If it's the same guy as did the install, he shouldn't even charge you :-)

Thought - this doesn't just happen when it's freezing?!

fossman

ThisIsWeird said:

The GS will know where to disconnect that pipe from the boiler, so will be able to withdraw it all from the reducer, and check what's going on - is the pipe too short, for example.
If it's the same guy as did the install, he shouldn't even charge you :-)

Thought - this doesn't just happen when it's freezing?!

It was installed by Boxt (well one of the contractors Boxt use). It was outside of the installation guarantee when it started dripping.

How would the freezing cause the issue? Steam condensing on the inside of the black pipe and forming water on top of the white pipe?

ThisIsWeird

fossman said:

ThisIsWeird said:

The GS will know where to disconnect that pipe from the boiler, so will be able to withdraw it all from the reducer, and check what's going on - is the pipe too short, for example.
If it's the same guy as did the install, he shouldn't even charge you :-)

Thought - this doesn't just happen when it's freezing?!

It was installed by Boxt (well one of the contractors Boxt use). It was outside of the installation guarantee when it started dripping.

How would the freezing cause the issue? Steam condensing on the inside of the black pipe and forming water on top of the white pipe?

Extremely unlikely in your case as the white pipe feeds into a much larger pipe, but these white pipes on their own are prone to freezing up once outside, and the condensate backs up. But, unlikely to be the case here.

fossman

ThisIsWeird said:

fossman said:

ThisIsWeird said:

The GS will know where to disconnect that pipe from the boiler, so will be able to withdraw it all from the reducer, and check what's going on - is the pipe too short, for example.
If it's the same guy as did the install, he shouldn't even charge you :-)

Thought - this doesn't just happen when it's freezing?!

It was installed by Boxt (well one of the contractors Boxt use). It was outside of the installation guarantee when it started dripping.

How would the freezing cause the issue? Steam condensing on the inside of the black pipe and forming water on top of the white pipe?

Extremely unlikely in your case as the white pipe feeds into a much larger pipe, but these white pipes on their own are prone to freezing up once outside, and the condensate backs up. But, unlikely to be the case here.

The outside pipe which runs down to the drain is open at the top so I suppose it is possible (but probably unlikely) that the freezing air could freeze up the white pipe inside (depending how far the white pipe goes through).

Should the outside pipe have a cap on the end at the top?

ThisIsWeird

No idea

Lorian

Please post a higher resolution photo of the external pipe work including what/where that drains to.