dbl. wall stovepipe temp.

[count brewski]

hey y'all, I just got the smallest Regency (F1100) and am running about 5 1/2 feet of dbl. walled stovepipe......as an early Xmas gift my wife gave me a Homesaver magnetic stack thermometer (it was about $15). However it is designed to be used with single wall pipe, so I'm wondering what would the optimum temperature range be as a result of the dbl. wall pipe?Is there a formula (like add/subtract "X" degrees ) to determine it? I've been burning small-to-moderate fires as suggested for the first few days (this is day 4) and the readings are in the 125-150 range.......any info will be greatly appreciated, and since I'm a new-to-the- forum-guy here, I'm now looking forward to reading all these posts as I await a reply.......thanks, CB P.S. to my local natural gas company, I say "bite me" !

 

[elkimmeg]

can you explain 5.5' of double wall pipe then what ? Have you considered placing the thermomenter on the stove surface?

 

[count brewski]

then 3' stainless in attic and 3' outside, stack is straight from stove to chimneycap

 

[elkimmeg]

well how does if run? easy to start the fire, easy to keep it going, does it back puff when opening the door?

 

[count brewski]

everything runs fine, I just want to know the temp. range adjusted for dbl. wall pipe.....

 

[wahoowad]

your dbl wall stovepipe only runs 150?

 

[count brewski]

yes, it only runs 150, that was as per my post running small to moderate fires for the first few days (new stove).....I've since moved the thermometer to the stove top (thanks elki) and am having bigger fires, and the hottest it's been there (on stovetop) is 475.......now, I am going to move the thermometer back to the dbl. wall pipe and have a nice big burn, and I'll let ya know what it's reading in a day or so.......man I love this woodstove, I haven't run my gas furnace in a week now and my house (1250 sq.ft.) is warmer than it's ever been, with only moderate fires......I should have done this years ago, the gas company can KMA......LOL

 

[Jeffsweep]

I have a free-standing Kent woodstove with double-wall Dura-Vent connector pipe. I have both a flue gas thermometer with stem into the inner pipe as well as a surface thermometer. The surface thermometer is much less responsive to temperature change and will usually read slightly less than 50% of the actual internal flue gas temperature. If the stem thermometer is reading 800 degrees, then the surface thermomter will be in the 300-350 degree range, but gets there much slower.

 

[got wood?]

I have a free-standing Kent woodstove with double-wall Dura-Vent connector pipe. I have both a flue gas thermometer with stem into the inner pipe as well as a surface thermometer. The surface thermometer is much less responsive to temperature change and will usually read slightly less than 50% of the actual internal flue gas temperature. If the stem thermometer is reading 800 degrees, then the surface thermomter will be in the 300-350 degree range, but gets there much slower.

Greetings Jeffsweep...could you do me a favor? I've got the same question as Count Brewski...what the relationship is between the flue gas temp and the temp of the outer wall of a double-wall flue (I've got a magnetic thermometer onmy double wall). Do you have a magnetic flue thermometer you could place just under your flue gas probe and see how closely it tracks to the flue gas temp? I think I've read that it's about 200 degrees cooler on a double walled flue, but I'd like some verification if possible.

thanks!

jas

 

[Jeffsweep]

Jas,
I will perform the required check for you. Right now it's 62 degrees here and the stove is out. This house designed with great solar gain so the stove is not needed unless the temperature outside is low 40's or less.
Jeffsweep in Kentucky

 

[rudysmallfry]

Quick question. What's back puffing? Are you talking about having to wait a few seconds to let the fire adjust to the increase in oxygen before adding logs? Is that not supposed to happen?

 

[Todd]

I think back puffing is caused when the fire is starved for air and takes a gulp of air from the chimney? Sometimes if I open my door real quick like, it will do this, and I get smoke out the door temporarily. Crack open your door, count to 10 to let the pressures equalize, and then open door slowly. That should stop back puffing.

 

[got wood?]

Jas,
I will perform the required check for you. Right now it's 62 degrees here and the stove is out. This house designed with great solar gain so the stove is not needed unless the temperature outside is low 40's or less.
Jeffsweep in Kentucky

Thanks Jeffsweep! 62, lucky you! In New England the mid 30s is considered warm this time of year ;-) I'm still trying to figure out a way to stretch my remaining cord of seasoned wood for the rest of this winter!