prv discharge

[snoopy8888]

was browsing at my local installers websites came across this pic in their photo gallery, is that prv discharge acceptable ?

 

[GrahamM]

Unless you have specific information from Worcester to say this is acceptable(doubtful), then no!
Of top of my head as per standards "should terminate in safe visible position and ran in metallic material".

I would be NCS'ing: flue poorly sealed inner wall. Internal condensate pipework not sealed and leaving advice on PRV.

 

[dancinplumba]

Don't see major prob with prv. Filling loop wrong way round tho'

 

[nysk2008]

im thinking sticking a tundish on prv so you've got visable discharge

 

[phil the bucket]

U can put prv into upvc as long as its can take high temp
I've done it before but used tundish ,hep to o valve and 32mm plastic and just teed prv and condense in together
Would only do this if its difficult to get prv to outside

 

[AlexGas]

MI clearly says – the pressure relief drain pipe from the boiler should be at least 15mm copper pipe.

Relevant BS 6798 tells us that the discharge pipe for water or steam from the valve is metallic and falls throughout its length. And the discharge is visible and will not discharge on to the occupants of the premises or on to any electrical components or wiring.
It’s defo a fail to me – NCS.

 

[AlexGas]

I know, it’s a long shot but this room could be a sauna…

 

[Aquazone]

I'm pretty sure I've read something in the Gas Safe mag recently saying PRV must discharge externally, copper pipe etc.

IIRC it was a technical manager from WB who was making the point that if an unvented can be put into soil via a fanny trap, push fit plastic etc, then surely a PRV should be able to also, but as yet, the regs didn't allow it, and should be updated.

 

[SimonJohns]

I've come across this before. Many times

Investigated and found in a reg that it is acceptable

I will find it over the weekend and reply next week with an extract of where I found it

 

[lame plumber]

my issue is the condensate drain, I prefer it sealed in case of possible trap fail and fume issues

 

[GrahamM]

I've come across this before. Many times

Investigated and found in a reg that it is acceptable

I will find it over the weekend and reply next week with an extract of where I found it

As I mentioned earlier. This would only be acceptable if specific permission was given from the manufacturer to carry this out.
The basic standards state the PRV should terminate safely.
Worcester even give a nice wee picture in their MI's showing how the PRV should discharge for the installers that my have trouble reading.
With the advent of remote PRV's there are very few instances where a PRV could not be fitted running to drain externally.

 

[dancinplumba]

Say it again up your post count

 

[dancinplumba]

What about into combined PRV/condensate pump ? Bet worcestershyte say can't do that too

 

[GQuigley67]

it's kind of the norm for unvented hot water heaters in commercial, you know the undersink ones. So why can't it be done with combi's? Condensate wrong though