Final break in burn....Observed something interesting?

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eightpilot

New Member
Jul 2, 2008
137
Northern WI
Doing the last of my break in fires tonight on the Oslo when I noticed something. With my infrared temp gauge, I noticed that while the top of my stove was 500F. The hearth underneath the bottom heat shield was only 72F. I guess thats why Jotul doesn't publish an R value for under the stove. It just doesn't get that hot with the heat shield installed. 8
 
Sounds like oslo has got a heat shield that really works well.
 
Our cat was caught napping under the Castine. She knows a good thing intuitively. There's already an ashpan under the stove that acts like a preliminary heat shield. The final heat shield reduces the bottom heat to comfortable warmth.
 
8 Thanks for sharing. I just put my oslo together today. Going to put a fire in it this weekend hopefully and this is good to know. Been super busy with my son's football so I'm a little behind on stuff around the house but hope to have it installed before Oct.
 
The bottom heat sheild for my new oslo came uninstalled inside stove. The stove is being installed over cement- all masonry around it- do I need it?
 
I would install it. You can't even tell it's there. It hugs the ashpan so tight that it's not noticable at all... Best of all it comes with the price of the stove. 8
 
I was actually debating this today. I have a nice brick hearth and want the bricks to get a warm as possible to hold the heat. I just might go without the sheild.
 
I used to have a huge old creek stone fireplace with a wood insert. I used it for 10 years. It had two bottom vents on each side for the air to circulate through and exit out the two top vents. The creek stones would get nice and warm and hold the heat.

But the Oslo did come with a bottom shield. Might as well use it. I guess it depends on the thickness of the hearth and if combustible material would be affected.

I need a temp gauge. I'd hate to give the store where I bought my Oslo any more business. I guess I'll go to the local friendly Harman selling store to purchase a gauge.
 
I had an old VC Defiant on the hearth before the Oslo. I figure if it could with stand that old palor furnace fine it should be ok with the Oslo too.
 
eightpilot said:
Doing the last of my break in fires tonight on the Oslo when I noticed something. With my infrared temp gauge, I noticed that while the top of my stove was 500F. The hearth underneath the bottom heat shield was only 72F. I guess thats why Jotul doesn't publish an R value for under the stove. It just doesn't get that hot with the heat shield installed. 8

Not to jack a thread but I was reading the manual for my F600 and there is nothing in it about R value of a hearth board.
 
If it comes w/ one, I believe you are required to install it per the UL specifications on the stove. As someone else mentioned, they are barely noticeable and add that extra level of security. I can put my hand on my masonry hearth right under my stove with ease (Dutchwest stove), most mfgr's do a nice job with this part of the design these days. But dont let that make you cut corners on any new hearth design.
 
The F600 only needs ember and spark protection for the hearth. You could put down a sheet of metal of the correct size and be fine. Most folks make a simple tiled hearth for the stove. But if you want to get creative and use stone, brick, glass, etc, go for it. Just be sure that joints are mortared so that no embers can get between the cracks and onto the combustible surface below.
 
Good to hear. How warm did the stone surround get?
 
Stone veneer above the rear of the stove got upt to 170F at it's peak. I might design a small heat shield just below the stone to help protect it from the heat once I fire it up full blast. I did notice that the stove top thermometers read about 400F, while the center cookplate area was up to 520F. Jotul says to put the temp gauges off to the side of that cookplate though. Any thoughts on this???
 
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