Pipe size??

[thornton_chris]

I've just has a Valliant Ecotec boiler installed (combi).

Can someone tell me the size of the white output pipe? I think it is the condensing output - basically goes to a drain.

Also can you get a connector to make it fit down the waste bit of this?

http://www.wickes.co.uk/Soil+Vent/WC-Connector-with-waste/invt/158826


Many thanks in advance.
Chris

 

[EliteHeat]

It's 21.5mm overflow. You can get a 40mm to overflow adaptor for the pan connector which will work fine.

 

[JPC]

http://www.bes.co.uk/products/129.asp

part number 11244 or 11245

 

[BigBurner]

110mm tees have what looks like knock out slots on the sides of them. I believe a 32mm or 40mm boss can be fitted into the side of the 110mm tees. I have never, ever, seen one fitted though. All plumbers tend to go directly into the 110mm soil pipe with strap on boss, rather than into the tee piece. Are these knockouts really for additional 32mm or 40mm drains?

http://www.wickes.co.uk/content/ebiz/wickes/invt/431968/431968-ab0-00co_full.jpg

 

[spacethegas]

if you have just had the boiler installed why was the condensate waste not fitted.

 

[cb9002]

Aren't there rules about draining condensate into SVP?

I thought they had to go through limestone/similar first to neutralise.

 

[BigBurner]

Aren't there rules about draining condensate into SVP?

They can go into a SVP. It must be above the toilet branch or have a HepVo trap on them if below the branch. This is to ensure no sewage ends up in the boiler if a blockage. I'm pretty sure I got that right.

I believe the boiler condensate siphon trap can be removed if a HepVo trap is fitted. I know one system where the boiler siphon/trap was a problem (updated on later models) and it was solved by removing and fitting a HepVo trap.

 

[gas4you]

It used to be that it wasn't approved if the SVP was cast iron, then they changed their minds as it was then said that the SVP would be constantly flushed through with water thereby diluting the condensate.

Siphon traps are integral to boiler design these days so can't be removed. As long as the trap is 75mm you can connect to SVP at any point although it is usually at a higher level than the WC T.

 

[BigBurner]

It used to be that it wasn't approved if the SVP was cast iron, then they changed their minds as it was then said that the SVP would be constantly flushed through with water thereby diluting the condensate.

Siphon traps are integral to boiler design these days so can't be removed. As long as the trap is 75mm you can connect to SVP at any point although it is usually at a higher level than the WC T.

The 75mm I assume refers to the integral siphon trap.

If teed in lower than the WC tee, I would strongly recommend fitting a HepVo trap to avoid sewage getting into the boiler.