New build plumbing advice please !!

ollybally

Hi all I am ready for a plumber in my new build. The house will have a solid fuel stove that heats the rads and water and also an oil burner .
I have been getting quotes from plumbers and my main issue is do I pressurise the system or not ???
That is the water in the taps not the toilets from what I understand the toilets are gravity feed .
Is pressurising the system the best method ?? Can it be hard to get non pressurised taps ??

Dtp1979

ollybally wrote: »

Hi all I am ready for a plumber in my new build. The house will have a solid fuel stove that heats the rads and water and also an oil burner .
I have been getting quotes from plumbers and my main issue is do I pressurise the system or not ???
That is the water in the taps not the toilets from what I understand the toilets are gravity feed .
Is pressurising the system the best method ?? Can it be hard to get non pressurised taps ??

You cannot pressurise a plumbing system that is has the cylinder heated by solid fuel. Any plumber that says they will do it, avoid

ollybally

I plan to have an oil burner and a solid fuel stove that also heats the water and rads .
The taps / showers will be pressurised and toilets gravity feed. I think I need a special stainless steel cylinder for this but am wondering is this normal / better than gravity feed taps and toilets and a pump for the showers
Thank you in advance

ollybally

I plan to have an oil burner and a solid fuel stove that also heats the water and rads .
The taps / showers will be pressurised and toilets gravity feed. I think I need a special stainless steel cylinder for this but am wondering is this normal / better than gravity feed taps and toilets and a pump for the showers
Thank you in advance

ollybally

I plan to have an oil burner and a solid fuel stove that also heats the water and rads .
The taps / showers will be pressurised and toilets gravity feed. I think I need a special stainless steel cylinder for this but am wondering is this normal / better than gravity feed taps and toilets and a pump for the showers
Thank you in advance

Dtp1979

ollybally wrote: »

I plan to have an oil burner and a solid fuel stove that also heats the water and rads .
The taps / showers will be pressurised and toilets gravity feed. I think I need a special stainless steel cylinder for this but am wondering is this normal / better than gravity feed taps and toilets and a pump for the showers
Thank you in advance

If your stove is heating a stainless steel cylinder then that cylinder CAN NOT be pressurised.

ollybally

Ok thank you so perhaps gravity feed as I have the solid fuel stove
I think I need a heat genie or a heat hero installed as I have a big distance from my stove to hot press / cylinder will this influence anything ?? Also are you limited on tap choice with gravity feed system

Car99

Dtp1979 wrote: »

You cannot pressurise a plumbing system that is has the cylinder heated by solid fuel. Any plumber that says they will do it, avoid

Why Dtp? Out of interest not cause I think different.
I know nothing except two houses I know have solid fuel back boiler stove plus oil burner plus system pressurised built in the last 5 years and no issues with the plumbing 300 litre grant dual coil cylinders I think.

Dtp1979

Car99 wrote: »

Why Dtp? Out of interest not cause I think different.
I know nothing except two houses I know have solid fuel back boiler stove plus oil burner plus system pressurised built in the last 5 years and no issues with the plumbing 300 litre grant dual coil cylinders I think.

Because it's a potential bomb basically. there's ALot of science behind it too but it's too early in the morning to get into it. Plus it's strictly against building regulations and common sense

Dtp1979

ollybally wrote: »

Ok thank you so perhaps gravity feed as I have the solid fuel stove
I think I need a heat genie or a heat hero installed as I have a big distance from my stove to hot press / cylinder will this influence anything ?? Also are you limited on tap choice with gravity feed system

Have you discussed all this with your engineer. Will all this meet part L of the new building regs?

ollybally

Yes I'm gonna chat to my engineer
I know of at least 2 houses that have a solid fuel stove with a back boiler and a pressurised system with no problems however every house is different
Thank you for your advice hopefully I will get it sorted

Dtp1979

ollybally wrote: »

Yes I'm gonna chat to my engineer
I know of at least 2 houses that have a solid fuel stove with a back boiler and a pressurised system with no problems however every house is different
Thank you for your advice hopefully I will get it sorted

Just because you know of 2 houses does not make it right. Only an idiot would connect solid fuel to a pressurised cylinder. Unfortunately there are idiots out there who are doing this, putting people's lives at risk and amazingly, getting paid for it too.

hatchman

ollybally wrote:

Hi all I am ready for a plumber in my new build. The house will have a solid fuel stove that heats the rads and water and also an oil burner . I have been getting quotes from plumbers and my main issue is do I pressurise the system or not ??? That is the water in the taps not the toilets from what I understand the toilets are gravity feed . Is pressurising the system the best method ?? Can it be hard to get non pressurised taps ??

From my understanding of your post is that u want the water coming out your taps and showers under pressure ? But not going to the toilets. To me this is a different circuit than the pipe work going to stove and oil burner.

Dtp1979

hatchman wrote: »

From my understanding of your post is that u want the water coming out your taps and showers under pressure ? But not going to the toilets. To me this is a different circuit than the pipe work going to stove and oil burner.

Yes it is a different circuit but that's not the point. You cannot pressurise a stainless steel cylinder and have a solid fuel gravity circuit heating it.
Now you can put a pump after the cylinder because that way the water going to the taps will be pressurised but the cylinder won't. This is the only safe way of doing it

Couchpotato82

Dtp1979 wrote: »

Yes it is a different circuit but that's not the point. You cannot pressurise a stainless steel cylinder and have a solid fuel gravity circuit heating it.
Now you can put a pump after the cylinder because that way the water going to the taps will be pressurised but the cylinder won't. This is the only safe way of doing it

Stainless steel cylinder manufacturers have triple coil cylinders with an inch coil suitable for solid fuel though? If stove is open vented oil is gravity fed and has a pressure relief valve fitted what's the issue? I'm aware it's a massive grey area and if you have the relevant building regs regarding this can you post them because I'm very confused by it!!

Dtp1979

Couchpotato82 wrote: »

Stainless steel cylinder manufacturers have triple coil cylinders with an inch coil suitable for solid fuel though? If stove is open vented oil is gravity fed and has a pressure relief valve fitted what's the issue? I'm aware it's a massive grey area and if you have the relevant building regs regarding this can you post them because I'm very confused by it!!

The 1" coil is for solid fuel yes, but just because the cylinder is stainless steel dosent mean it has to be pressurised. As for building regs, I haven't them to hand but it basically says you cannot have an uncontrollable heat source heating an unvented cylinder.

Couchpotato82

Dtp1979 wrote: »

Yes it is a different circuit but that's not the point. You cannot pressurise a stainless steel cylinder and have a solid fuel gravity circuit heating it.
Now you can put a pump after the cylinder because that way the water going to the taps will be pressurised but the cylinder won't. This is the only safe way of doing it

Stainless steel cylinder manufacturers have triple coil cylinders with an inch coil suitable for solid fuel though? If stove is open vented oil is gravity fed and has a pressure relief valve fitted what's the issue? I'm aware it's a massive grey area and if you have the relevant building regs regarding this can you post them because I'm very confused by it!!

cruiser202006

Couchpotato82 wrote: »

Stainless steel cylinder manufacturers have triple coil cylinders with an inch coil suitable for solid fuel though? If stove is open vented oil is gravity fed and has a pressure relief valve fitted what's the issue? I'm aware it's a massive grey area and if you have the relevant building regs regarding this can you post them because I'm very confused by it!!

There's a reason why triple coil cylinders with an inch coil for solid fuel aren't sold with an unvented kit! An unchecked vessel and faulty t&p valve and cylinder will knock every wall in its path!

Dtp1979

Couchpotato82 wrote: »

Stainless steel cylinder manufacturers have triple coil cylinders with an inch coil suitable for solid fuel though? If stove is open vented oil is gravity fed and has a pressure relief valve fitted what's the issue? I'm aware it's a massive grey area and if you have the relevant building regs regarding this can you post them because I'm very confused by it!!

Oil dosent need to be gravity. Solid fuel does. Both need a pressure relief valve. The system (heating) has to be open vented. If a plumber is giving you this advice I'd really be looking for another one.

Pete67

There are a couple of options where mains pressure hot water is required along with a solid fuel heat source, but they must be properly designed and installed. See here for example.