HRV with Solid Fuel Stove

fitzie79

I am definately going to put a solid fuel stove into my new build. Recenty I have been looking at the HRV option as well but I am concerned that there might not be a sufficient draw in the house for the stove if I am making it as air tight as possible for the HRV.

Has anyone experience of combining both these options? How did it work out?

One option I have heard of is to put a fresh air feed in to the stove. Does this require a special type of stove? My slab has already been poured - is it too late to put the feed in or is it just messy now?

fitzie79

sorry - just realised this should probably be in renewable energies

sydthebeat

fitzie79 wrote: »

sorry - just realised this should probably be in renewable energies

Not really, there's nothing renewable about a solid fuel stove or a MHRV system...

you need to install a 'room sealed' stove... this draws air intake from the external through ducting or a balanced flue... and not from the room....

liam300tm

<p>sorry sidthebeat, but isn't wood a solid fuel and isn't it renewable!!</p>

spelling ed.

sydthebeat

liam300tm wrote: »

<p>sorry sidthebeat, but isn't wood a solid fuel and isn't it renewable!!</p>

spelling ed.

a dedicated wood stove is considered renewable, but a solid fuel stove (which can take wood, peat and coal etc) is not renewable.

liam300tm

Touche sir!!

sydthebeat

liam300tm wrote: »

Touche sir!!

anyway, i hope my response helps you...

fitzie79

thanks for the feedback syd

in order to install the ducting i'm guessing ideally it should be in the slab. seeing as it's too late for this whats the best way of getting the ducting in? stove will be located at an internal wall (planner didn't want the chimney at one end of the house.....)

also, will a standard stove (without it's own air supply) not work with a well sealed house?

Carlow52

Read Part J of the regs re the required air supply:

http://www.environ.ie/en/TGD/

the stove itself will have an air supply requirement also: could be 16sq inches.

There is a crowd in Monaghan doing a chimney system which incorporates an air supply from outside that runs up beside the flue so this could be the job for you.
Pm if interested.

Juantorena

fitzie79 wrote: »

thanks for the feedback syd

in order to install the ducting i'm guessing ideally it should be in the slab. seeing as it's too late for this whats the best way of getting the ducting in? stove will be located at an internal wall (planner didn't want the chimney at one end of the house.....)

also, will a standard stove (without it's own air supply) not work with a well sealed house?

We're getting a room-sealed stove. It's away from any internal walls. We're planning on 150mm underfloor insulation so we'll build that up with a 50mm thick slab under a 100mm slab. We'll cut out a section in the top insulation to accommodate the 100mm (4 inch) dia air supply pipe thus still having 50mm insulation below it. This will extend from an external wall to the location of the stove (about 4m).

My understanding is that a stove taking air from a (mechanically) ventilated room - i.e. 'well sealed' room - will adversely impact the performance of the MHRV unit and/or it's balance.

There are more and more of these stoves becoming available...maybe more so in the 'contemporary/modern' style. There are even a few with back-boiler options! I can PM you one particular supplier - previously mentioned on these boards - who we're dealing with. Lots of interesting stuff from them and a good place to start your search?

Carlow52

There is a issue with the air pressure in the external feed being affected by the wind.
If the inlet is on the leeside of the house the pressure will be reduced, perhaps leading to a downdraft in the chimney.

This is why some companies advocate an air intake from both sides of the house: predominantly [windward and leeward] sides. It would in effect be a Tee feed

A possible I][U]my theory only[/U][/I advantage of running the air-intake alongside the flue means that there will be a reduced risk of back-draft.

Most companies recommend a flap on intake to reduce back-draft: I would have concerns about the reduction in efficiency arising therefrom

fitzie79

hi juantorena - if u could pm me details of the supplier i'd appreciate it

MicktheMan

If you could pm me too please. Thanks

Lightning McQue

Could you pm those details please.

Thanks.

Lightning

Mixupat

Could you PM me also.

Thanks

Tinadec

Hi juantorena could you pm me to with the details of the supplier
Thanks

Tinadec

Hi Carlow52
Can you pm me the details of the crowd in Monaghan that do the chimney system.

Thanks

miss indecisive

hi Juantorena, could u please pm me the details of the supplier too

Thanks

fuchia

Could you PM me also.

Thanks

Quack13

Can u PM those details onto me too please.

Carlow52 I would be interested in the contact details for that crowd in Monaghan too.

Thanks

Q

lastbuilders

We have a Stovax multifuel stove and a HRV and have had no problems with it.

The one change I did was ensure the HRV supply was close to the stove.

Lastbuilders

Leadership

Join the list of pm'ed details please.

tomred1N

can someone pm me this information as well please

tomred1N

Hi there,

I'M just putting down foundations for a 3000 sq ft TF build. Plan on an airtight construction with condensing boiler to rads, solar panels MHRV and stove with back boiler in front room to also heat 9 rads at a time.

My query is how best to accomadate the stove with back boiler into the whole system as it seems the hrv won't be able to supply enough air to such a large stove in a fairly airtight house.

I have read all posts but most don't seem to be stoves with backbiolers capable of haeting at least 10 rads

any thoughts much aapreciated as plumber on site 2moro and pouring floor on saturday

CJhaughey

If the HRV unit is like mine I have a range of speeds that can be controlled for both extract and feed, If the range is not drawing properly, just adjust it so there is more air being fed in.

patd

hi - could you please pm me the details of the crowd in monaghan please?

thanks

ttayaa

Could you PM the details for this crowd in Monaghan too?
Thanks!!

Penn

Could you pass them on to me aswell?

Jennyr

Hi

I like tomred am hoping to install a solid fuel stove in an air tight house with MHRV. Also hoping to use a back boiler and compliment the system with oil.

I hadn't realised anything about air intake to the stove. Can someone explain it a little to me please?

I've spoken with 3 plumbers so far who all have a different way of pluming our house and I'm finding the decision so difficult.

Thanks

Juantorena

Jennyr wrote: »

Hi

I like tomred am hoping to install a solid fuel stove in an air tight house with MHRV. Also hoping to use a back boiler and compliment the system with oil.

I hadn't realised anything about air intake to the stove. Can someone explain it a little to me please?

I've spoken with 3 plumbers so far who all have a different way of pluming our house and I'm finding the decision so difficult.

Thanks

My understanding is that in an "air-tight" structure insufficient air is fed to the stove for it to burn/burn efficiently and/or it can disrupt the balance in a MHRV system (which, of course, will be fitted in an "air-tight" structure) thus affecting it's efficiency.

We just put a length of 4" or 100mm diameter rigid pipe under the floor with a similarly sized flexible duct attached to one end of it coming up through the floor where the free-standing stove is located. The other end of the rigid pipe will be open to the exterior of the building. We'll connect that flexible duct to another 100mm dia. right-angle rigid ducting which will in turn be connected to the inlet of the stove itself.

Here's hoping!

doncon

hi juantorena - if u could pm me details of the supplier i'd appreciate it, thanks

bakerbhoy

We are just about ready to fit our stove in what we hope wil be a fairly air tight construction with hrv . I ran a duct under the sub floor and brought the air intake up through the floor and constructed a plinth on which the stove will sit on a seal. The stove itself is completely closed to the interior and won't impinge on the interior pressure.It's only a space heating model but there are back boiler models available.
There are fully closed stoves available but they are more expensive compared to more readyily available makes
One point i would make when selecting a stove in these modern well insulated/ air tight houses with hrv is don't over size the stove as heat losses will be greatly reduced and you may find that you won't be able to enjoy using your expensive new stove . An expensive ornament :eek:
Ours is only a 5kw.
On a recent site visit our arcitect , on not a nice day weather wise, was fooled into thinking the heating system was running and that is with attic hatch,hrv flues and stove flues all open to atmosphere.This warmth was all down to solar gain.

fuchia

Hi Could someone PM me the details of the stove supplier.

Thanks

Fuchia:)

miss indecisive

hi ya bakerbhoy

could ya please pm me the company details for the stove too. Im having difficulty trying to find a double sided stove suitable for use with hrv.

Tanx

bakerbhoy

I have received requests for info on suitable stoves/fires for use with hrv and the suppliers of same.
Firstly i have cleared this with the mods and also i have to state that i have no association with any of these companies/suppliers other than as a customer of one or two.
These are from my research

www.scan.dk/ numerous suppliers throughout the country from website
www.saeyheating.com/en/service.htm www.eireheat.com in galway suppliers
www.rika.at/en/pellet_stove supplier in uk from web page
www.wodtke.com/menu.html e-mail interest web page in german
www.rais.com/Default.aspx?ID=89 www.chimneys.ie in waterford
http://www.cera-stoves.com/ www.euroflames.com in uk
http://www.kal-fire.nl/en/ www.fentonfires.ie/contact.php in greystones tunnel fire double sided heat 100 tunnel
http://www.caminettimontegrappa.it/ www.heatmaster.ie/ in cork double sided / boiler option one sided
http://www.twlag.ch/index.php?lang=en www.smartheat.ie/ in meath
http://www.romotop.com/ http://www.stovesonline.co.uk/

A review site for stoves http://www.whatstove.co.uk/

Not all these are fully airtight some use some secondary for a wash which would be minimal take from house/hrv

We chose a stove from tonwerk not yet installed but sits in the garage. I will post pictures once installed. At the moment it looks like sept/oct

gman2k

bakerbhoy wrote: »

On a recent site visit our arcitect , on not a nice day weather wise, was fooled into thinking the heating system was running and that is with attic hatch,hrv flues and stove flues all open to atmosphere.This warmth was all down to solar gain.

Looking like a nice build - fair play!

Juantorena

In addition to bakerbhoy's list above I'd like to add our stoves manufacturer - Westfire (www.westfire.dk) - room sealed and also from whom we purchased which was www.stovesonline.co.uk. They have a very informative website regarding stoves, types, installation and use.

Above cleared with mods - I have no affiliation with either of these groups other than as, thus far, a satisfied customer. I felt I should add this as I have received quite a few requests for where I got my stove and this post may prove useful for other posters.

sooty_soupy

Someone told me double sided stoves have a major problem with keeping the glass clean as it is difficult to distribute the airwash air evenly through the stove.

External air facilities can be fitted to some stove that will facilitate the combustion air being ducted directly into the stove rather than into the room. We have our stove from a Shropshire manufacturer called Clear view. They don't do a two sided stove because they claim the glass does not stay clean which is what they are well known for.

arynne

I want to install a simple wood/turf burning stove to warm a room 18ft x 18ft x 18ft high. Room is well insulated and draft free (ish). It should look nice and the glass should not carbon over. Cost should be in the €500 to €600 region. What are the recomendations please? Many thanks.
Andrew.

sooty_soupy

Sorry Andrew but for the money you have to spend, I would doubt your requirements are going to be met.

For the stove to work safely and be fitted correctly you should be seriously considering flue lining with a steel sleeve. To be brutally honest your budget will not come close to lining the chimney, let alone buying a good quality stove that will stay clean.

The better stoves will have air wash features, but often the cheaper products flooding the market from China which may lend themselves to your budget would be universally accepted within the industry as a short term fix. The glass will more than likely blacken, the stove can over burn due to a lack of door adjustment and the efficiency of a cheaper stove will fall away from the stove within a short period of time.

Sorry to be negative, but you would be better saving the money until the finances sweel a little more to do the thing properly.

Best regards

David

arynne

I should have said its to go onto existing fire opening 2' 9" x 2' 9". But thanks very much, I take your point and will up my budget accordingly.
Andrew.