Wind causing significant draw on insert stove

peustace

Hi, I have a riva 50 installed for over 18months. Very happy with it over all, our house is located in an area where there can be a lot of wind at times and during stormy times it causes a draw on the fire which burns everything much quicker. I have a flue installed as well. Is there anything I can do to reduce this in times of stormy weather?

Calahonda52

Check that when the draught is shut fully that there is no dirt keeping it open.
Mine was like a blacksmiths forge last night and this am I found ash was keeping air vent open

sky6

You could put a H Cowl on top of the Chimney pot. This should balance out the effect of wind across the top of the Chimney.

Calahonda52

My read of the use of H cowls is different: e.g. www dot topcap dot i.e.

Cerco

Do cowls withstand storm force winds?
I am thinking the load or drag on the chimney would be a problem.
Can you take any special measures to overcome or is it a problem at all ?

sky6

Generally yes,provided they're fitted properly. Also as the there round this will deflect the wind around the Cowl. Are you on or close to a hilltop. Hills can have a dramatic effect on the performance of a Chimney. Especially if there's wind around, which is why I suggested th h cowl. The h cowl by it's construction allows the wind to pass thru the side pipes, thereby balancing the amount of draw on the main Chimney pipe.

The Royal Scam

I live on a hill and the wind I get on my chimney is unreal and after numerous changes and cowl changes and tweaks the only thing that worked instantly was the H cowl.

sky6

The Royal Scam wrote: »

I live on a hill and the wind I get on my chimney is unreal and after numerous changes and cowl changes and tweaks the only thing that worked instantly was the H cowl.

Exactly my point. Wind blowing across the top of a Chimney cause all sorts of problems.

BMTAG

We are hoping to install a Riva 50 in our existing marble fireplace. Have a recommended installer who seems very good and particular, however he is quoting e2100 for installation only. This to include the flue installation (2 storey house) carbon monoxide alarms etc., but we source the stove (another e1800 approx). Looking very pricey. How does that compare to your installation?

kennyb3

sky6 wrote: »

Exactly my point. Wind blowing across the top of a Chimney cause all sorts of problems.

What's the difference between o-h cowl and just o cowl. How to figure out which you need?

Actually think I have it - need o-h cowl for top of chimney pot - not pretty, can't see my neighbours loving it atop my house!

FrClintPower

BMTAG wrote: »

We are hoping to install a Riva 50 in our existing marble fireplace. Have a recommended installer who seems very good and particular, however he is quoting e2100 for installation only. This to include the flue installation (2 storey house) carbon monoxide alarms etc., but we source the stove (another e1800 approx). Looking very pricey. How does that compare to your installation?

Seems pricey to me too, when we got our insert installed we needed to get a new fireplace too, and including the fireplace it came to about that price.

Pulling numbers out of the air here, but flue liner itself ~200/300/400 euro? Various other materials ~200/300, plus labour? Surely you're looking at a grand, max? It shouldn't be anything more than a 3-4 hours job, as I said, ours involved removing an old fireplace and replacing it and it took two guys about 6 hours to do.

Pure finger in the air stuff there, the experts might have a different view.

BMTAG

Thank you, good to get a second opinion. I went to another supplier yesterday and you are pretty close on the fitting costs so we will not be dealing with the first guy.