Valant Boiler - Overflow? Pictures

muskoka

Just had Valiant boiler installed (brand new c/heating system). Seems to be a pipe from boiler going through external wall into outside drain? Weird - anyone know what this is & what its for please? Pipe is about 1.15" approx

Canucklehead

Hi...condensate drain. Ask your RGI to confirm.

Canucklehead

muskoka

I'm not at house at moment, not moved in yet, so cant post a pic. Dont think its the condenstate drain though. Condensate is white pipe....this is black plastic pipe & much larger than condensate pipe?

paulsad

Doesn't have to be white - better to be thicker helps prevent it freezing in winter

Canucklehead

Larger diameter waste pipe is often used to reduce freezing risk...see here p.42-46.

Canucklehead

muskoka

ah ok thanks chaps. Just rather an eyesore..........still better an eyesore than a frozen pipe I know

panchenlama

this is the pipe that will freeze when it gets cold and stop your bolier from working

gas4you

32mm shouldn't freeze, especially if it has been fitted correctly.

macman

They only freeze if badly sited and inadequate fall on them-as long as the condensate flows through them at adequate speed then freezing should not be an issue. It's standing water in a pipe that is most liable to freeze.

keystone

Thank your installer that he used 32mm(?) pipe rather than 20mm overflow pipe.

Cheers

T_T_2

keystone wrote: »

Thank your installer that he used 32mm(?) pipe rather than 20mm overflow pipe.

Cheers

Would be good to know what the ID, internal diameter, is to judge that.

O/flow or condensate pipe is typically between 19mm and 21.5mm OD so it would need to be a pretty hefty outer wall to end up with condensate pipe that gives an overall diameter of an inch and a quarter like the OP says. It is certainly plausible that the installer used 32mm waste pipe in place of O/flow. The comments about the risk of freezing are fairly accurate and it wouldn't be the first time.