Has my builder ruined my boiler?

[Riley]

It was my understanding that you required two taps by regs anyway?

You can see why you have the NRV on the cold, as it's less of a dead leg.

And we have all seen proper filling loops with one tap on

 

[EvilDrPorkChop]

But there’s no dead leg because the hose should be removed

Should be. But how many customers actually remove it though.

Also if you're only fitting a tap on one side and just a NRV on the other I wouldn't be removing the link.

 

[Riley]

No but I’m arguing regs if you say there should be two taps then the hose should also be removed. Sorry I’m not being pedantic I’m genuinely querying. I cannot see what difference it makes what the reasoning is for the nrv on cold

 

[EvilDrPorkChop]

No but I’m arguing regs if you say there should be two taps then the hose should also be removed. Sorry I’m not being pedantic I’m genuinely querying. I cannot see what difference it makes what the reasoning is for the nrv on cold

I wasn't disputing the fact that the hose shouldn't be removed, I was just simply stating that hardly anyone actually removes the link.

I thought there was some reg about the NRV on the filling loop, but I can't find it to hand. Years ago, it was as you say NRV on the heating side. Then about 10 years ago I thought they changed it and required the NRV to be on the cold main. Incase someone left the filling loop open on the cold side and the dead leg within the loop.

Even if it isn't a reg about it, isn't it better practice for it to be on the Cold? You remove the dead leg (If one is created by the customer), plus you can drain the boiler easily when recharging the expansion vessel or maintenance .

Two taps - at least if one is passing you have a fail safe on your second tap.

 

[Riley]

Oh I totally agree with two taps don’t get me wrong but to me it’s logical to stop the heat at the return end so there is no inadvertent heating of the cold side. I cannot see where a dead leg occurs if there is no hose though.

 

[EvilDrPorkChop]

Oh I totally agree with two taps don’t get me wrong but to me it’s logical to stop the heat at the return end so there is no inadvertent heating of the cold side. I cannot see where a dead leg occurs if there is no hose though.

You're right, there isn't one when the hose has been removed. But my point kind of was, no one ever removes the hose.

 

[OffshoreGas]

Sorry to sound blunt but your title is immediately accusatory. If in fact it was a builder or a plumber that worked on the boiler and not a gas safe engineer then I’m afraid the fault lies with you

Why do you need to be gas safe to fit a zone valve?

 

[OffshoreGas]

Thanks Riley, the only problem I now have is, the extension build is new and I have not signed off on the builder's snagging list. So a small final payment is due. I don't know whether I should trust him to put it right or to call in a known good plumber to rectify his work.

Legally the original contractor is entitled to be given reasonable opportunity to put the situation right. You’re well within your rights to insist the work is undertaken by a competent person. Sounds very like you have the experience to decide for yourself if the guy is flanneling you.

 

[Riley]

Why do you need to be gas safe to fit a zone valve?

Didn’t say to fit a zone valve did I. OP alluded to the rebuild of the boiler which I was questionning

 

[Riley]

Legally the original contractor is entitled to be given reasonable opportunity to put the situation right. You’re well within your rights to insist the work is undertaken by a competent person. Sounds very like you have the experience to decide for yourself if the guy is flanneling you.

As you say however you are well within your rights also to refuse access if you feel they have acted outside scope or unlawfully