UDHW Discharge Pipes

[stings27]

Hi all.

Not posted for a while but have a question re: Discharge pipe lengths.
I am in ownership of my UDHW cert. but haven't worked on one for yonks....till now :thinking:
Was going to run it in 22 but with the fittings, exceeds the permissable 9m..just :mad2:
Do I now have to run the entire length in 28 or can it be started in 22 ?

Thanks :smiley2:

 

[ShaunCorbs]

28mm all the way or 11/4 push fit waste :rofl:

 

[Best]

Yes, you have to use a 22mm x 28mm connector just below the tundish.
I know it seems strange, but it can't have the 22mm running any distance if the total length including allowances for all bends exceeds the max 9m permissible for 22mm discharge

 

[Unregistered]

Thank you both.