PRV discharge pipework

[Kerr Gas 1]

Hi,

Im fitting a 28I junior tomorrow, my problem is it could be difficult to run the discharge pipework from the PRV to outside i was wondering if it is ok to run it into internall drainage. any advice will be apprechiated

 

[Halesowen1]

What do you mean by internal drainage? e,g a waste pipe or an actual drain in garage etc?

 

[SafeGasInstall]

Hi Kerr ,and welcome along , where the previous one was terminated ?

 

[Kerr Gas 1]

sorry it's waste pipe, currently being used for a wash machine but im planning on using it for condi and hopefully the prv discharge. i was hoping if i installed a tundish this would be satisfactory, any ideas

 

[Kerr Gas 1]

its gravity fed at the moment, back boiler with indirect cylinder. usually id use the cylinder drain to connect my prv but on this system it doesnt run straight outside.

 

[gaspastemania]

I have installed hundreds internal into hep v/o trap and have been inspected by gas safe and building cony=trol and never been pulled for it as long as you either have a tundish or air gap to see it blowing off

 

[SafeGasInstall]

I have installed hundreds internal into hep v/o trap and have been inspected by gas safe and building cony=trol and never been pulled for it as long as you either have a tundish or air gap to see it blowing off

is that on new build jobs ?

 

[GasmanxxxR1]

In the past ive put he prv on a rad tail then discharged it outside in usual way, obviously choose rad on external wall

 

[gaspastemania]

New builds /existing or renovated properties

 

[Halesowen1]

Not allowed on my local contracts, must be ran direct to externall. This then determines where we are allowed to fit the boiler. Does cause us problems at times.

 

[gaspastemania]

Thats a problem with contract works the contractor makes it up as they go along at times.

 

[GasManMike]

Different to unvented discharge pipes I know. But, last time I spoke to Santon they told me they were only allowed to give advice on D1 (up to the tundish) pipework, they then said building control in every local authority has different ideas on how they like PRV's to terminate. Might be worth giving them a ring.

 

[kirkgas]

Not allowed on my local contracts, must be ran direct to externall. This then determines where we are allowed to fit the boiler. Does cause us problems at times.

go back to basics on your design, it is possible to fit an additional external prv in a suitable position, allowing a wee bit of flexibility on boiler position

 

[Halesowen1]

Back to basics on my design? Confused.

 

[AWheating]

on most of the local contracting work i have done the boiler position is decided by the landlord/clerk of works before you even walk through the door and you have to just do the best you can. For example Wolverhampton Counsil tend to go for vertical flue, boiler in the A/C every single time to avoid plume problems. Even in A/C's with external walls.

 

[Halesowen1]

I used to do the surveying for previous contarcts, hence the reason I said the PRV determines where the boiler goes. As do the flue and condense etc.