gas pipe size help

[stumas]

My existing gas installation to my gas fire, cooker and old boiler which did hot water only is all in 15mm. Im thinking of having installed a new combi boiler. Would this need a 22mm feed to it, or not? Or would the 15mm be sufficient. I'm thinking of having a Bosch 28 junior installed.

 

[SimonJohns]

Ask your installer

 

[stumas]

Ask your installer

why don't you help people here

 

[Simon F]

As said your gas engineer will work this out.
the question is so open ended.
Whats to say that 22mm is big enough, this needs to be properly calculated.

 

[SimonJohns]

Because I'm horrible

 

[stumas]

what is the size of the connection on the boiler intake then the reason im asking is im having quotes done one has mentioned it needs 22mm the other has not the and I don't want to pick the wrong man for the job

 

[stumas]

thanks for the crap advice ill go and look at my neighbours

 

[Rickster123]

It's not crap advice it's great advice just bluntly given.

 

[chris watkins]

thanks for the crap advice ill go and look at my neighbours

You do that, you never know they might have all the same appliances as you have or intend to have. Fool.

 

[stumas]

You do that, you never know they might have all the same appliances as you have or intend to have. Fool.

yes fool ive told you its a bosch 28 junior it can only suck so much gas in cant it no good putting in a 38mm I live in a house not a factory else id have a bigger boiler , yes he has the same boiler havnt you heard of rule of thumb

 

[Masood]

yes fool ive told you its a bosch 28 junior it can only suck so much gas in cant it no good putting in a 38mm I live in a house not a factory else id have a bigger boiler dick yes he has the same boiler havnt you heard of rule of thumb

You've just demonstrated why a little knowledge is a very dangerous thing...

 

[SimonJohns]

Close this thread please!

 

[stumas]

yes close it advice is crap no wonder no one trust exspensive plumbers

 

[Chris Kafetzis]

Aaaahhhhh hahahahahahahahaha. Hahahahaha

 

[Reg Man]

No need to feel offended. The chaps here are just reinforcing the use of properly qualified gas engineers for this work. If someone comes out and says "yes I will connect this boiler to a 15mm gas pipe" they are probably no good. It is likely that this boiler will require a larger size pipe, which will be required sizing properly, so a Gas Safe Registered engineer should be able to quote you what is required. We can not give you specific advice on this, as we have not seen the job and we cannot give specific gas technical advice on the public forum.

 

[AWheating]

you could need 15mm,22mm,28mm,35mm?? it depends on the appliances, the route and restriction of the pipework. So how can somebody on the internet tell you what pipe you need?

this is why you have been told to ask your gas safe engineer.

i normally fit 28mm min as a "rule of thumb"

 

[Ermintrude]

I'd use microbore after this tread!!

 

[stumas]

No need to feel offended. The chaps here are just reinforcing the use of properly qualified gas engineers for this work. If someone comes out and says "yes I will connect this boiler to a 15mm gas pipe" they are probably no good. It is likely that this boiler will require a larger size pipe, which will be required sizing properly, so a Gas Safe Registered engineer should be able to quote you what is required. We can not give you specific advice on this, as we have not seen the job and we cannot give specific gas technical advice on the public forum.

Thank you Reg Man. That is helpful. The trouble is I have had two gas safe people quote for the same job. One has mentioned that I need a new 22mm but the other didn't mention it, even though both looked at it. I want to pick the right person to do it. I'm only asking because I thought that a forum would be able to tell me the way to go as I thought I would get the right advice from you all.

 

[AWheating]

you got the right advise, the only person who can answer correctly is the installer you use. The pipework will def need upgrading, if the second engineer has not mentioned it then phone and ask him/her what they have allowed for in the quote.

if you come onto a forum with a bad atitude you will never get help.

 

[Dotty]

OP I am closing this thread as you have been given more than enough advice. Get a gsr in to size your pipework properly. Rule of thumb doesn't exist in the gas industry and could well kill you.

Next time you cop an attitude with the members on here because you're not getting the advice you think you should will be the last. Take that as a friendly warning!

We cannot and will not give advice on the installation or repair of boilers, cookers or ANY gas appliances for your own safety.


Please go to Gas Safe Register | Ensure your gas engineer is registered. or post a thread in the 'I'm looking for a plumber / gas engineer' section of these forums remembering to include your location - [DLMURL="http://www.ukplumbersforums.co.uk/im-looking-plumber-gas-engineer/"]I'm looking for a Plumber or Gas Engineer[/DLMURL]

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Thank you.