A different back boiler system

[blake999]

My apologies if this has been covered before I have had a look and can not see anything similar, I would like to change my existing log burner for a log burner with a back boiler, however i don't want to connect this to the radiators and the hot water directly, I would like to build a system that is independent of the existing heating system which is a modern gas fired combo system and leave it a alone, simply all I want to do it to give the mains feed water and the radiator return water a leg up back into the combo, I have included a simply basic drawing for what I would like to do.
I can't run the pipes up and over from the back boiler to the thermostore so they have to go under the floor to the other side of the house 9m away where the thermostore is 1.5m above the boiler, do I need a pump in this system

Untitled

• blake999
• 10 Nov 2013
• 1

 

[Dan Robinson]

Give up now.

You need a gravity circuit.

You can't rely on pumps.

 

[Norcon]

Can your combination boiler accept pre heated water?

Like about 90c maybe.

 

[blake999]

Give up now.

You need a gravity circuit.

You can't rely on pumps.

if you can't rely on pumps why does every central heating system have one?

 

[blake999]

Can your combination boiler accept pre heated water?

Like about 90c maybe.

Why not, I don't think it will be any where near 90c as you are asking for 25lpm through the heat exchanger

 

[Dan Robinson]

That's the kind of questioning that confirms you should give it up.



Most CH systems won't explode if there is a power cut whilst the burner is running.


If you don't have a gravity circuit how is the heat going to leave the back boiler when there is no electricity?

 

[blake999]

That's the kind of questioning that confirms you should give it up.



Most CH systems won't explode if there is a power cut whilst the burner is running.


If you don't have a gravity circuit how is the heat going to leave the back boiler when there is no electricity?

I agree, but there are other ways to move water without electricity, but apart from that minor issue would you agree to the rest of the system in principle

 

[Agile]

When that store is boiling at 100° C then where is the heat from the wood stove going to go to?

We don't know the output of your stove to the water but suppose it is 5 kW then it will heat up a 250 litre store pretty soon!

Tony

 

[Dan Robinson]

Hold on.

Is this Dr Drivel, Water Systems or Bug Burner?

We're about due another wind up.

 

[blake999]

You lads don't think out the box, it would appear if you can't do it it can't be done,

 

[Dan Robinson]

OK mate.

Have a nice evening.

Can't think out of the box indeed.

 

[45yearsagasman]

With a system operating to your design, you may well be ringing 999 for assistance.

 

[Agile]

Isn't there something in the Building Regulations which would protect him from his wider dreams?

 

[Dan Robinson]

Don't know about the building regs, but maybe the mental health act .

 

[Agile]

Do you mean the Madhouse Act 1774 ? Or the later versions in 1828 and 1832?

Or the more recent Lunacy Act 1890 ?

Or the Mental Health Act 1983 ?