Keystoker 90 Flue temp

I'm new at this coal burning and loving every moment of it. But my Question is, What should the flue temp. be on average For a 90,000 btu Keystoker? I'm averaging about 35 Lbs. of coal per day and my flue temp is 125*-130* .Just wondering if that is good or bad. While I'm here I would also like to thank everyone for all the info here, this is an outstanding site.
Thanks,
Gene

Sounds good to me. #s and temps.

I was running a LeisureLine Hyfire 1 in my shop for about two weeks. With both burners running, about 130,000 BTUs the stack temp was 125-135*.
With only the small burner burning near an idle, the stack temp was 65*.

Greg L.

You guy's are talking external temp right? Because my internal tenps are a lot higher than that.

I am not sure external tems are a good indicator, because when I hit my pipe with a lazer, my temps vary greatly from the top of my pipe to the bottom on horizonal runs and vary a lot, front to back on my short vertical stack.

I bought some small grill thermometers that go to 700 degres,put one in the stack just above the stove, below the heat reclaimer and another about two feet above it. Sort of helps me see if the reclaimer is actually doing any thing. The hotter I burn the stove the wider the variation is between the two thermometers.

BK

Yes my readings are on the black flue pipe with a laser thermometer. I haven't poked holes in the pipes yet. Too lazy and it's too much fun playing with the laser thermometer.

Greg.

Mine is internal, I run a 12" Wiess probe style thermometer at the elbow to the chimney breech. It stays about 100-150* on a natural draft. When the combustion blower runs it can go way up. The outside of the pipe and even an inch or so in will not see the temps that you get at the middle. Depending on conditions, there could be a significant difference between the two

Thanks guys, this is all new to me I'm used to burning that liquid gold but not as much any more. I just wish someone could have introduced me to coal years ago.

Thanks again,
Gene

FINALLY! We got the Keystoker stove moved to the new house (many of you knew we were moving into an old victorian!) 3 of us mananged to get it down the basement on a dolley....got it set in place. REMOVED the power vent, since now we have a 30'? chimney in the center of the house.

Yesterday, went down and bought a bunch of black pipe and a couple of elbows, pull an existing old floor furnance pipe (small not used anyway) out of the chimney, hooked the pipe to the stove, screwed and siliconed the joints, let it dry for an hour. Then, went down and bought a few pieces of 8" duct work and hook it into the existing large floor furnance grate into the living room.

Filled it up and started a fire, went out...had to go get some charcoal, broke them up and it started no problem! It got real hot and was almost pushing the hot coals off the grate, had to adjust feed and such, but I don't think the exhaust pipe has gone over 100-120 degrees (if that) on the outside, I have the cheapo magnetic thermo, but I can actually put my hand on it for quite a while....seem to working. Just have to fine tune! May have to get a bigger one? It's a big house.

Pics to follow.

Are we measuring Flue Temp on the Inside or outside of the pipe.?

I put a probe into my flue pipe and and it is a bit warm (230-270 Deg.) without a baro damper, I know I will be putting one on very soon, just picked it up to day. I want to get it back down below 200. I open the ash door and the temp drop up the exhaust quite a bit. Will let you know once baro is installed and calibrated.

See attached.

Top is actual flue temperature with teh stove ranking full throttle (500 degrees on the sides).

Bottom is Plenum temp to the living room.

WNY: I put a magnetic thermometer on my flue pipe just see what the temps are ranging at. The last couple of days its been in the single digits at night here and the flue temp gets up to 145*. The past couple of weeks of burning coal has been awsom, but this is all new to me. I never even burned wood. I just want to make sure I'm not doing any thing wrong. So far Reading the posts here have been a great assett.

Thank You All,
Gene

I took the magnetic one off the side of the stove and the outside of my pipe was around 100-120 or so, I am putting a baro damper on maybe tonight and want to see if I can adjust a bit to cool it down. It does get quite warm to the touch and with the close clearance above the pipe and I don't want to overfire and burn the house down !!! nfire:

I know the stove has an overtemp (200 deg.) limit switch tied into the blower unit, so if the stove gets too hot or the blower stops, shuts down the stoker.

I am also putting an inline 8" duct fan in my plenum to move more air into the living room.

I actually cut my own plenum into the top of the stove.

Details to follow....back to tinkering...

ALSO, I am getting more "Clinkers" now, is that running TOO hot or a feed problem or both?

I am seeing some big chunks (The whole width of the burn plate and 4-5" long and 1" thick, kinda the size of a small loaf of bread) are forming and falling into the pan, I have never seen that before when I had the power vent hooked up.

Is that small 'loaf of bread' burnt coal or still burning when if falls off??

Greg L

WNY
You might want to put a piece of sheet metal between your stove pipe and the wood. Those vic houses don't have the high ceilings in the basements, but they sure are nice.

Don’t forget to unpack your stuff

Not sure if the clinker is burning or not, I have never seen it happen, just when I empty the ash pan.

Coalkid
YES, I have metal around the ceiling where the pipe goes thru into the chimney, no problem there and around the post behind the stove too.

Safety First!!
As you seen I have a CO detector and Fire Extinguisher handy too!

Thanks!