Wood Burner & oil boiler heating

[David Riding]

Is it complex getting the 2 to work together for central heating, water etc, oil boiler is a combi but obviously easy enough to put storage tank back in,

Im in Lancs anyone know of a man who can,

[AardvarkTreeServices]

Google "Dunsley neutraliser". These units are used to hook up multiple heat sources ie wood stove and boiler. I'm not sure if they work with a combi. If you want guidance on how to set up your heating system then check out "The green Building Forum"

[mattplace]

I asked my plumber this the other day! He said that you can't have a storage tank with a combi so you can't plumb the wood boiler in with it!

 

I am now thinking of under floor heating off the wood stove and conventional heating off the boiler.

[detritus21]

Have a word with D Roberts at Coppull they may be able to help or know of a fitter that can 01257 792173

[Peter]

I set my wood burner up with a closed pressurised radiator system, which apparently you are not supposed to do. It worked just fine, ran it for nearly 2 years to heat the whole house.

 

Theoritically you could just cut into the radiator circulation system and plumb it in, however there is significant risk of damaging the combi boiler, as the back boiler in the stove will introduce contamination such as rust particles into the system.

 

Why not ditch the oil boiler and put a pellet boiler in instead?

[windfall]

This is my understanding of it.. A back boiler stove set up needs to be vented, if it is not vented then i think the system can be compared to an unexploded bomb. If your heating system gets too hot and starts boiling then where is the steam / pressure going to go? It has to be able to vent otherwise the tank or somthing related to it will go bang.

 

This is why you can not hook into a modern heating system which needs to be a closed pressurised system, if the system was fitted with a stove and vent and it all got too hot and vented the pressure then the water would not be able to circulate through the system and it would go into melt down.

 

Admitidly as Peter has proven its all what ifs and possibles...

 

To run a stove with normal heating system then you need a heat exchanger cylinder (looks like a megaflo except with loads of ins and outs!), which allows for multiple inputs ie stove, solar & ground source heating. My dads had one fitted and it works superbly. Not cheap mind, but it is the only safe and recognised way to do what your asking. Basically there are coils in the exchanger that heat the water in a closed pressurised system.

 

I am looking at hooking my stove up to my underfloor heating, just a bit worried that it will make the house too hot as i only need it on for an hour a day and its roasting!

Edited January 13, 2011 by windfall

[Peter]

I ought to add that my system had an pressure relief valve set at 3 bar fitted just above the back boiler, vented to ground outside the building, just like combi boilers do. I also put an expansion vessel in to cope with minor fluctuations in pressure.

 

Heat exchanger would work nicely, as it keeps the fluids in each system seperate, and if the tank is directly above the back boiler it will circulate without a pump.

[htb]

As an alternative to a dunsley neutraliser could try a H2 Panel. It comes complete except for pump you just run all your pipes up to panel which you locate next to immersion tank.

[treedave]

I had a neutraliser fitted in my system, but not a combi boiler. That way the thermostat on the boiler only fires it if the fires has not got the water to temp. Once the water is up to temp, the tank thermo diverts heat from fire (or odd occasion that fires not on, the boiler) thru to the central heating. Sounds complicated but works really well - saves me about 1000L of oil a year. If you where closer I know a plumber and sparky that work together on these systems.

[truck]

Try having a nosey at this site....seem they have the answers to joining a whole host of sources together

 

DPS MultiFuel Heat Bank