What is the usual stack temperature of your efm stoker?

What is the usual stack temperature of your efm stoker?

PostBy: stoker-man On: Tue Jun 10, 2008 11:18 am

Stoking and resting?
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: What is the usual stack temperature of your efm stoker?

PostBy: e.alleg On: Tue Jun 10, 2008 6:46 pm

Stoking mine gets hot enough to touch for 2-3 seconds without getting burned, probably 250 degrees. Idling you can leave your hand on it, maybe 120 degrees or less. These are all taken after the barometric damper. In the summertime the pipe is cold all the time, the stoker doesn't run enough t0o warm the pipe.
e.alleg
 
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Re: What is the usual stack temperature of your efm stoker?

PostBy: stoker-man On: Tue Jun 10, 2008 7:49 pm

Thanks, any more replies?
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: What is the usual stack temperature of your efm stoker?

PostBy: Rob R. On: Wed Oct 26, 2011 6:42 pm

I know this is a very old post, but I finally got around to installing a probe-type thermometer in my EFM's flue pipe. With the thermometer installed about three feet from the flue outlet, and just before the baro, I observed 105 degrees F with the boiler resting (25 minutes since last timer cycle). After 20 minutes of stoking I observed 275 degrees F. After 30-45 minutes of stoking it was up to 315 degrees, and seemed to plateau there. All readings were taken with the boiler water at approximately 150 degrees. The heat exchanger was cleaned about 3 weeks ago, and the stoker is running 4 teeth, 4.25 air...burning rice.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy