Some clarification on clearance needed

[fatrabbit]

I just installed a jotul 600 and am unsure of clearance. Is it the distance to combustibles or the distance to shielded surface on the wall that is used. I have an air gap then durock with stone veneer. Current distance is 9" to the stone and 12" to the wall behind. Is this sufficent with no heatshield ?
thanks for any advice.

 

[begreen]

There are several variables that affect clearance. Is this a corner or straight wall installation? Does the stove have a rear heatshield? Is this single-wall, single-wall shielded, or double-wall connector pipe?

 

[fatrabbit]

The stove is paralell to a straight wall. No rear heatshield. Single wall pipe. The entire wall section behind pipe is durock, with 12'' clearnce to combustibles around thimble. If needed I could change to double wall pipe.

 

[begreen]

It sounds like you are correctly installed to the minimum. 12" is the minimum clearance to combustibles with a wall shield, but no stove shield and with single-wall pipe. There's no harm in increasing protection by adding a rear heatshield, or double-wall pipe. Switching to double-wall might have an advantage because it will keep the flue gases hotter. Is this a one or two story installation? Does the stove pipe go straight up inside the house and out the roof? Or does it do a right angle turn and head outdoors to a tee and then up?

 

[fatrabbit]

thanks begreen.
We have a two story 1873 farm house (poorly insulated but were working on it) pipe is at a 45 degree angle for 28 inches and exits thru the wall in to a masonry thimble and chimney with about a 25 ' run. I think I will install the double wall pipe. Do they have a flexible elbow in double wall? If not the angle and distance could make for a tricky install. Stove is burning well so far. Pipe temp stays around 350 or so when I have secondary burn. Speaking of which is the stove top temp or pipe temp more important ?

 

[begreen]

No flex elbows in double-wall, they are fixed angle only. However, there are telescoping sections of double-wall that make the fitting between 45 elbows a lot easier to manage.

I would say the stove top temp is probably more important, though being a stove geek I like having both.