Boiler condensation pipe into a shared gutter down pipe

[Geraint091270]

Again thanks for your help guys. I know what course to take and have some good advice to follow.
Great forum, and a Merry Christmas to you all.
👍👍

 

[Chuck]

The impression I got from a display on the wall in a Worcester Bosch training centre is that the 'correct' way is to have the condensate pipe dropping into a hopper or socket (one size larger than the condensate pipe) coming off a tee such that there was an air break at the end of the condensate pipe and no possibility of rainwater inducing a vacuum on the condensate pipe.

Another reason for doing it this way is to consider what happens if the downpipe gets blocked below the point of the condensate entry. The entire pipe can fill with water to a level above the boiler...

I had this happen in at my own home (the drainpipe full of water, not the condensate). I'd noticed a gutter spilling during rain so took a look at the gully at the foot of the downpipe. While thinking about the problem, I pulled on a weed growing out of the gulley. Won't make that mistake again. In less than a second the ca 50 litres of freezing cold water that was being supported by a plug of sand/silt and weed roots had crashed down and I was soaked from head to toe.

 

[AWheating]

Should have an air gap between condense waste and rwp.