Pipework from Existing Boiler to New Outbuilding

[ripperuk]

Hello,

We're in the process of getting an insulated outbuilding built at the end of our garden for ourselves and also a family member whom has sensory need to use the odd occasion. The new outbuilding will have 3 multi-use rooms which are:

1. A relaxing/sensory room
2. Wet room (Basic shower/wash facilities)
3. Entertainment/Cinema

Our existing home boiler is approx 19 metres from the outbuilding, so can anyone advise on how can we get the pipework across the garden for radiators to work in the outbuilding?

 

[cross thread]

Run it on its own combi boiler using LPG ,Electric heating .or yo can buy pipes inside insulated ducting, problem with last one is delivery time for hot water .

 

[ripperuk]

Run it on its own combi boiler using LPG ,Electric heating .or yo can buy pipes inside insulated ducting, problem with last one is delivery time for hot water .

Thanks for your prompt reply. Apologies, I've got normal gas mains, so how do I run it on LPG?

Other than delayed delivery time, would my DHW and CH work as expected if I used my existing boiler? Could there be any other issues that I should be aware of?

 

[cross thread]

Existing natural gas supply probably won’t cope with two boilers ,run new off LPG bottles.
Probably could be connected to existing ,you would want the new building to have its own control

 

[ripperuk]

Existing natural gas supply probably won’t cope with two boilers ,run new off LPG bottles.
Probably could be connected to existing ,you would want the new building to have its own control

I'm afraid LPG is not ideal for our situation, hence it would have to be either existing boiler or getting a gas pipe pulled up to the new premises. Assuming the existing gas supply is sufficient, would I be able to get a corgi registered plumber to pull a 22mm gas pipe to outside and if so, how would this be protected from any external damage and elements?

 

[Madrab]

@ 19m it aint going to be a 22mm pipe I'm afraid, if it's a combi. Possibly with a low output system boiler and then run the wet room off an electric shower or a small unvented if the cold mains was up to it. Viessmann are currently marketing an 11Kw System boiler.

You would need to get your current setup surveyed by a gas safe engineer to see what it may be able to cope with.

 

[ripperuk]

@ 19m it aint going to be a 22mm pipe I'm afraid, if it's a combi. Possibly with a low output system boiler and then run the wet room off an electric shower or a small unvented if the cold mains was up to it. Viessmann are currently marketing an 11Kw System boiler.

You would need to get your current setup surveyed by a gas safe engineer to see what it may be able to cope with.

I see, thanks. Are you saying that I would need the gas company to extend my gas line or that corgi plumber would be able to do it? Also what size pipe would I need and would it be copper or something else?

 

[Madrab]

If it's from after the meter and the meter is large enough then the Gas Safe Registered engineer (GSR) can do that work. As suggested though that all comes down to measurements, calculations etc.

It would be run in copper, pipe sizes would be down to what it needs to supply in volumes of gas to all the gas appliances (m3/h) but again the GSR engineer would calculate all of that.

 

[Murdochcat]

Use electricity for heating ….

 

[ripperuk]

If it's from after the meter and the meter is large enough then the Gas Safe Registered engineer (GSR) can do that work. As suggested though that all comes down to measurements, calculations etc.

It would be run in copper, pipe sizes would be down to what it needs to supply in volumes of gas to all the gas appliances (m3/h) but again the GSR engineer would calculate all of that.

That's great advice, thank you. Would it be possible or worth checking the gas pressure before we start the build? Just worried this is going to cost an arm and leg.

 

[ripperuk]

Use electricity for heating ….

I would be happy with electricity for heating, but it's so expensive compared to gas

 

[Murdochcat]

I would be happy with electricity for heating, but it's so expensive compared to gas

Might just be the simplest solution

 

[ripperuk]

Might just be the simplest solution

I agree, but the price of electricity right now extortionate and I can't think of anything else other than gas

 

[UpgradeME]

I agree, but the price of electricity right now extortionate and I can't think of anything else other than gas

I would price up a few different options; suitable cold water feed; running gas pipe and new system or combi boiler; electric heating; electric vs combi/system shower and also think about how often you think the space will be used in Winter (heating), Summer (showers?) and what kind of experience / budget you have.

Once you have all the info, you can then make a more informed decision on which route to take.

 

[ripperuk]

I would price up a few different options; suitable cold water feed; running gas pipe and new system or combi boiler; electric heating; electric vs combi/system shower and also think about how often you think the space will be used in Winter (heating), Summer (showers?) and what kind of experience / budget you have.

Once you have all the info, you can then make a more informed decision on which route to take.

Cheers. Will do that. Thanks for all your help. Much appreciated.