Connect a wood stove to central heating

[papi78]

Hello I am equipped with a gas central heating and I want to put in my living room a wood stove for the approval and why not save energy ... I came across a mixed model stove / boiler but do not know how to connect it to the existing system. I came across an excellent site ( http://pagesperso-orange.fr/herve.silve/schemasbois.htm ) which offers schemas and I have simplified one that I wish to submit ... What do you think, knowing that I do not have a big budget to grant to this project ..

[Christophe]

Hi, you have fallen well, I just finished the installation of our wood boiler (connected to floor heating and ECS with solar supplement and fuel oil, even if the fuel oil is HS for the moment).
It cost us 3000 € boiler included (but with a stroke of luck for the used DHW tank used).

You will find all the details, plans and photos here: https://www.econologie.com/presentation- ... -3553.html

But be careful, because of the risk of corrosion, I will have to change the installation here is the plan of the modification:



Explanations here: https://www.econologie.com/forums/schema-cha ... t4266.html

[Christophe]

By the way for your connection, it would be necessary to know a little more about your existing installation ... but I advise you already to read the various topics about my realization (there is 3 month I knew nothing in boiler wood)...

[papi78]

Viessmann gas boiler 30 Kw with DHW tank attached. A circuit of 14 radiators. So pretty close to the diagram I found but I do not want to put a buffer ball ...

[Christophe]

And what do you want to add wood? A boiler or a boiler stove?

With wood if you want the ECS it is almost mandatory to buffer but I think you can not use that of the gas boiler (if it's a gas boiler wall style, I do not think there if exchanger?).

[papi78]

It is a stove / boiler model Concorde AKBS http://gdt.eu/stad/pdf/Concorde_B.pdf

I think I have enough radiators (14 + 2 unused) to dispense with stamping, don't I? I could leave at least 2 "thoroughly"

[Christophe]

Ok it is a boiler stove ... what is the DHW power given by the manufacturer?

Yes you can use the radiator as a "buffer" but you will not have "100% wood" DHW then (at best you will have a wood preheater) ... but maybe that is not what you are looking for?

[papi78]

If I understand correctly (I'm bad in German) the power of the stove is 10 kw for water ...

The current system has a priority in the ECS since it is equipped with 2 circulators which never work at the same time, controlled by a probe and a relay in the DHW tank.

The main goal is to "relieve" the gas boiler when the stove is on, so much the better if it no longer starts up.

[Christophe]

Ok in this case it can be very simple: in your place I simply plug my stove on the boiler return (between the return radiator and the boiler) ...

The editing you drew above puts the 2 in parallel, so operating independently of each other what does not seem to be what you want.

Otherwise pitmix has studied a case a little similar to yours in this subject: https://www.econologie.com/forums/releve-de- ... t3771.html

[papi78]

Yes I thought well to put the stove "in series" in the radiator return but there are two drawbacks: it does not heat the DHW and the gas boiler "heats" the stove when it goes out and so yuck the yield!