Jotul f3 cb noob with clearance questions.

[ozarkroozer]

hello all. just purchased my new stove and need advice on clearances. This is my first wood stove and want to make sure i get this right to avoid disaster. I'm confused by the jotul manual for the f3 and need some advice. I will be installing with double walled pipe, top vented, in a corner. I was told this model is standard with a rear heat shield. I understood I didnt have to cover the drywall with any non-combustible as long as I was no closer than 18" from the side. The company I bought it from said the side was from the side of the exiting pipe. My question is ... is the "side" defined as the side of the stove itself or the point at which the pipe leaves the top of the stove (the side of the pipe)? The manual is a little vague. I installed the box through the ceiling so when installed my stove pipe side is 21" from the walls in all directions to be sure. now i'm not sure i did the right thing. any help would be appreciated. thanks

 

[begreen]

The way I read the spec for the stove diagonally centered in the corner, with a rear heat shield and double-wall pipe top-vented, the clearance is a minimum of 14" from the rear corners to the wall. But it does not hurt at all to exceed this. If you have 21" that is great.

 

[ozarkroozer]

Thanks for the reassurance. I really started to second guess myself. great forum. Ill post up pics when Im finished.
Thank you.

 

[begreen]

Can you put up a photo of the location as it is now and also a simple sketch showing the clearances from a top view perspective? I'd feel better being sure that nothing was missed.

 

[ozarkroozer]

It will sit in a corner of a room on a hearth pad. the corner walls are sheetrock. The stove is top vented and if you measured from the outside of the pipe to the corner, the left wall and to the right it would be 21" in all directions. I hope this helps.

 

[colin.p]

Like BeGreen says, the rear stove corners have to be 14 inches from combustible surfaces with double wall pipe, 18 inches with single wall. My stove corners sit 14 1/2 inches from the walls and my pipe is 23 inches from the walls. If yours is only 21 inches, you want to make sure the corners are at least 14 inches from ANY combustible surface.

 

[begreen]

Thanks, that's why I wanted to see a picture. I thought you had 21" clear from the corner of the stove. Measuring from the pipe makes a big difference. I think you may be too close and will need to move the stove forward. The stove is 11 3/8" to the centerline and the center of the pipe is 7 1/4" from the back. That puts you right at the edge of too close. (Check my math -> 11.375 - 3 = 8.375. 21" - 8.375" = 12.625') If that is correct that is 12.625" at the middle of the stove. The back corner would be even closer to the wall.

If that is so, don't panic. The stove could be rear-vented to an elbow which would bring it forward by plenty enough to give you plenty clearance. Or two 45's could be put together to make an offset. Otherwise the wall will need to be protected to reduce clearances. I would make a cardboard template of the stove so that you can get measurements exact.

 

[ozarkroozer]

yes thats why i was was wanting to know the definition of "side" of the stove was. When I asked my salesman he looked at the manual and was also unsure. He ended up calling Jotul and they said it was the side of the pipe. I set it up that way. I can rear vent but according to their definition that would be too close. totally confused now.

 

[begreen]

I'm not understanding the salesperson's response either. The double-wall pipe, protected wall clearance is 6" from the side. How could that work if the pipe edge is 8 3/8" from the side? (Well more like 7 7/8" accounting for the double-wall jacket.)

The alcove clearance diagram clearly shows this measurement is from the side of the stove to the nearest combustible surface, not the pipe. I find it hard to believe that Jotul said from the pipe as this installation has been described unless there is horizontal run of pipe that might need greater clearances.

 

[ozarkroozer]

Like BeGreen says, the rear stove corners have to be 14 inches from combustible surfaces with double wall pipe, 18 inches with single wall. My stove corners sit 14 1/2 inches from the walls and my pipe is 23 inches from the walls. If yours is only 21 inches, you want to make sure the corners are at least 14 inches from ANY combustible surface.

It seems for some reason they were thinking "corner" was the corner of the wall and when pushed out 14" from the "corner" that would leave you 18" from both side walls. measured from the pipe. So going on the pipe thing I pushed it out 21" to be safe. I'm taking your advice and maybe a rear vent or protecting the walls with more brick since protected walls can be 6" from the stove. Thanks for the help guys.The guy said he called jotul and said it was from the pipe. I'm a little ticked but it will work out and i'll be fired up in no time.

 

[colin.p]

I see what you mean, it does sound kind of like that. However, I had mine WETT installed and again WETT inspected 3 more times and all said it was 14 inches from the stove corners. However, my insurance inspector still wanted a wall mounted heat shield (most, if not all insurance companies hate wood stoves)

 

[ozarkroozer]

I see what you mean, it does sound kind of like that. However, I had mine WETT installed and again WETT inspected 3 more times and all said it was 14 inches from the stove corners. However, my insurance inspector still wanted a wall mounted heat shield (most, if not all insurance companies hate wood stoves)

I was hoping to keep a clean wall behind the stove but I'm now thinking I may go up with brick to reduce the clearance. While I got you. the manual says the floor protection needs to be a r 1.1. I was going to build up Durock an inch or so and add some reclaimed 3 inch brick on top. the manual doesnt say r 1.1 for wall protection. do you think it's ok to use less durock if i go up the walls?

 

[colin.p]

I have no idea, but, from what I was told, the most common is sheet metal attached an inch out from the wall with an inch from the floor. But I'm sure other's far more familiar with the proper materials will tell you.