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View the thread, titled "upcoming job Back boiler replacement" which is posted in Boiler Advice Forum on UK Plumbers Forums.

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Hello Lads,

as above I am having an upcoming boiler conversion. I am a little bit concerned about few things. First of all it is a council flat which makes the installation much harder. Furthermore I am having just concrete walls and floors which is really hard to run pipe works throughout the place towards the new boiler place. I am also concerned about the gas pipe because the gas meter downstream has a massive steel pipe going straight down into the floor and T's off before that into the concrete wall. I was wondering if anyone knows if that could be a supply for all flats?
The size i would say is about 40 mm steel pipe. I also struggle to find a way to run a new gas pipe towards the boiler it is in a weird position. The good thing is that the flat is at the top floor which means I could use the loft space to run my central heating pipes from the cylinder cupboard towards the new boiler location which will be either in the kitchen next to the sink or in the food storage corner behind the fridge. i was thinking to install the boiler in the cylinder cupboard but i believe I will not manage to do the vertical flue through the roof accordingly.

you can see my attachments to get a better idea of the layout of the property.

Perhaps either one of you came across a similar installation and layout and could give me some helpful tips to make my life easier.

I am a little worried that I am facing some problems and therefore I am on here again to pick all your brains to get as much information from other experienced engineers.
 
Here are the attachments

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basically kitchen is first on the right and then the bathroom. left hand side its the living room and then cylinder cupboard and bedroom.
 
Boiler on external wall flue straight out, pipes run through loft space . Good bunch of lads can crash this out in few hours easy money.
If it was that easy I wouldn’t come on here. 🙂 the gas pipe for example isn’t that easy to get to the right location. I will definitely use the loft space to run my ch pipe from the cupboard to the new boiler location. In the loft is mains supply which I will use to connect onto the bathroom supply and hot water will be taken from the cupboard too.
 
Run gas through the loft?
You can’t touch the incoming side
No chance I can go through the loft due the bricks above. If I found a way to do so, would I be allowed as it is not her loft but the housing associations. Any particular rules I have to follow?
 
No chance I can go through the loft due the bricks above. If I found a way to do so, would I be allowed as it is not her loft but the housing associations. Any particular rules I have to follow?
You can’t work on the incoming gas pipe only after the meter.
I’m guessing the steel pipe is the incoming?
 
Fair enough. Are there other gas appliances?
40mm is bigger than domestic ticket allows
Just the backboiler with the inside the chimney. There is an old capped pipe inside the kitchen. I will run a complete new pipe in 22 mm rather than sing the steel.
 

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