Replacing some gas piping with 28mm pipe

[Scott_D]

It's not grey, it needs upgrading based on the information available.
Those who didn't quote to upgrade are either going to leave a non compliant install or have to ask for additional £££ at the end

 

[dfish]

Thanks Phill - good advice. I have gone with the ones who initially mentioned replacing some of the piping and have come back to explain it all to me properly.
Thanks for your time.
Dorothy

 

[Stu Davis]

That length of pipe run sounds like part should be 28mm or any wont get enough inlet pressure, baxi's are a right pain for being noisy if inlet pressure isnt right due to under sized gas pipe

 

[dfish]

Thanks for the info - yes I am going to get at least half of the pipe replaced with 28mm. Hopefully that will be enough.
thanks D

 

[ShaunCorbs]

Thanks for the info - yes I am going to get at least half of the pipe replaced with 28mm. Hopefully that will be enough.
thanks D

dont hope get him/them to work it out

 

[dfish]

I have never met such a bunch of vague people using the words HOPE and SHOULD BE. I have a guaranteed price. The problem they say is that they don't know how many bends are in the pipe!
I guess half of them shouldn't be in business. Thanks for your help.

 

[Ric2013]

Yeah, shouldn't be.

I hope it's not contagious.

😉

 

[dfish]

I hope not - have a good week.
Cheers D

 

[ShaunCorbs]

I have never met such a bunch of vague people using the words HOPE and SHOULD BE. I have a guaranteed price. The problem they say is that they don't know how many bends are in the pipe!
I guess half of them shouldn't be in business. Thanks for your help.

worst case then

 

[Sparkgap]

I have never met such a bunch of vague people using the words HOPE and SHOULD BE. I have a guaranteed price. The problem they say is that they don't know how many bends are in the pipe!
I guess half of them shouldn't be in business. Thanks for your help.

It's called CYA! :wink5:
I've got a £300k project at the moment to replace underground heating and water pipework in a school with new pipework running over the roofs. Our quote is liberally sprinkled with caveats as short of digging up the floors or smashing out wall panels we don't know exactly where the existing pipes are that we need to connect onto, so for the purposes of issuing a quote we have made a number of assumptions with a few quid on top to cover Sod's Law and the client knows this, as well as the fact that if we find things are completely different once we start, then we will be coming back to them for a variation. Minor differences I expect we'd just deal with anyway as they would be covered by the padding in the quote.
In your case I expect some have looked at the existing boiler and pipework and assumed that the new one being the same-ish output SHOULD be okay. Others have decided to cover their backsides and point out that the gas pipe may be undersized. If you go with the former and the new boiler doesn't work you MAY have a claim against them depending on how they worded their quote. If you go with the others and don't change the pipework and it doesn't work it's your problem not theirs.