unvented rointe relief valves

[meengineering]

Evening all
I have been tasked with installing a Rointe RD Series unvented hot water tank within a flat, centrally located within a block.
My problem is that, the job is a retrofit replacing the existing hot water tank with the Rointe system. The rointe system has a relief valve on the top of the heater unit and also on the cold feed according to the installation manual.
The flat being central has no way of terminating the relief valves to the exterior of the property as the installation notes suggest, and if I were to somehow get these to terminate to the exterior the length of runs and pipe sized would have to be huge.
Is there any other way I would be able to terminate these correctly to comply with regulations and preferably with minimal disruption.
I have relatively easily accessible waste pipework which run into the internal communal waste system for the block. Could this be utilised somehow?

 

[Ermintrude]

Humm so your not qualified and contravening building regs. [emoji79]

Ha ha

Get some one competent and qualified in to do the job.

Block of flats. Hope you have good insurance.

 

[meengineering]

Humm so your not qualified and contravening building regs. [emoji79]

Ha ha

Get some one competent and qualified in to do the job.

Block of flats. Hope you have good insurance.

I wish i wasn't qualified, then i wouldn't have to tackle the joys of domestic level work. :smartass:

But that wasn't the query i wanted some advice on.... ill put up another post for that. :rolleyes2:

 

[EPH]

So you're qualified but asking if you can run the discharge into a waste pipe? hmmmmmmm

 

[Billy Bob Bob]

interesting,i will be watching this thread to see what pans out,can you send me your G3 qualifications via pm,a photo will do

 

[meengineering]

So you're qualified but asking if you can run the discharge into a waste pipe? hmmmmmmm

Commercial engineer, thrown into a domestic - as a favor for a good client. Hence asking the question.... Its a shame the original domestic plumber who fitted the flats out with the existing unvented tanks hadn't done their bit correctly during construction - then there would already be the correct safety pipework there.

A simple yes or no would suffice, or maybe options if there is any. If not fair play

 

[meengineering]

I struggle to see how any of your above responses assist in any way.

I don't have to justify anything to anyone, advice is sought - im a commercial engineer asking about domestic, a simple yes, or no answer would suffice or any helpful options that i could look at.

 

[Ermintrude]

It's got Kellogg's in top corner

 

[Meady]

I struggle to see how any of your above responses assist in any way.

I don't have to justify anything to anyone, advice is sought - im a commercial engineer asking about domestic, a simple yes, or no answer would suffice or any helpful options that i could look at.

The reason no one is answering you is because you could be any old num nuts asking for advice on a potential bomb if fitted incorrectly.

if you want the advice pm gas man your details and all will be well 🙂

 

[Dotty]

OP. You need to understand that we regularly get non competent persons trying to diy their appliances hence the perceived lack of an answer you're getting.

UVC's and gas appliances make us über aware.

So, as one commercial guy to another.

Chill!

 

[EPH]

Croppies commercial?

 

[Millsy 82]

Croppies commercial?

Is he? He never says! Lol.

 

[Dotty]

Ha. Ha. Ha.

 

[AWheating]

sounds like the entire block of flats may have dangerous/ not to standards discharges. I would consider phoning local building control and reporting the issue as they may all need a solution.

running to waste would require a seperate waste and the entire waste system confirmed and able to prove as safe for the temps. sounds like the orignal install was a bodge.

 

[stevetheplumber]

all the regs are available online it can go to waste but there are certain provisos

 

[justlead1]

Faced with this situation a survey of existing soil and waste system may be the place to start. The high temp that can be achieved with unvented system faults can be dangerous when discharging. The PVC/plastice pipes commonly used do not accommodate the potential high temps. However if the soil pipe is say cast iron? Further investigation my find a solution.
I seem to remember that before unvented become an accepted system fitted by trained staff. Chartered engineers were able to design and underwrite the systems. Perhaps others would have come across this as my memory does on occasions let me down.