Harmon Stoker - Smoke out the back of the coal hopper

Re: Harmon Stoker - Smoke out the back of the coal hopper

PostBy: titleist1 On: Thu Jan 31, 2013 11:12 am

One other thought i had late last night was that if the coal has a lot of fines it may cause burn issues. Although that seems to cause the fire to not burn hot enough, not sure if that would cause exhaust to back up into the hopper.

Do you have moisture on the underside of the hopper lid when you see the smoke at the bottom of the hopper? I am guessing that you do since that is another symptom of exhaust heading out the hopper. I'm not coming up with anything else to check...maybe someone else has better ideas?
titleist1
 
Hot Air Coal Stoker Stove: Harman Mag Stoker (old style) one in basement, one in workshop
Hand Fed Coal Stove: Harman Mark III on standby for long power outages
Coal Size/Type: Rice/Anthracite; Nut/Anthracite

Re: Harmon Stoker - Smoke out the back of the coal hopper

PostBy: coalkirk On: Thu Jan 31, 2013 12:08 pm

Without a manometer you are just guessing at your draft. You mention the baro is open. But without a draft gauge you don't know what effect it is having on your draft reading, other than reducing it. I would suggest you get a manometer or borrow a draft gauge from someone and actually set it properly. An improperly set baro could be robbing more draft than you want. As an experiment, cover it with foil and see if you problem goes away.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

Re: Harmon Stoker - Smoke out the back of the coal hopper

PostBy: llama99 On: Thu Jan 31, 2013 9:05 pm

OK, I looked it over carefully and couldn't see anything I did wrong. Then I talked to local stove stores - none had draft meters - couldn't buy one. So, I checked the barometric and set it between 4&5, closed the flap on the combustion fan a bit and it is doing fine. The folks seemed to think the 58 degree temps and 50 mph wind gusts had a lot to do with it. Guess I'll have to go on-line to get one. Can anyone suggest one? Some are staggeringly expensive.
llama99
 
Hot Air Coal Stoker Stove: Harman Magnum Stoker
Coal Size/Type: rice
Stove/Furnace Make: Harman
Stove/Furnace Model: Magnum Stoker

Visit Lehigh Anthracite

Re: Harmon Stoker - Smoke out the back of the coal hopper

PostBy: LsFarm On: Thu Jan 31, 2013 9:46 pm

Put Dwyer Mark II into a search engine like google,

Ebay has several listed:
http://www.ebay.com/sch/i.html?_trksid= ... &_from=R40

Greg L
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Re: Harmon Stoker - Smoke out the back of the coal hopper

PostBy: llama99 On: Thu Jan 31, 2013 10:38 pm

LsFarm wrote:Put Dwyer Mark II into a search engine like google,

Ebay has several listed:
http://www.ebay.com/sch/i.html?_trksid= ... &_from=R40

Greg L

Thanks Greg - do you use a Dwyer? I looked at them before, but the ones i saw only have plastic lines I wasn't sure how to hook it to the hot stove.
llama99
 
Hot Air Coal Stoker Stove: Harman Magnum Stoker
Coal Size/Type: rice
Stove/Furnace Make: Harman
Stove/Furnace Model: Magnum Stoker

Re: Harmon Stoker - Smoke out the back of the coal hopper

PostBy: coalkirk On: Thu Jan 31, 2013 11:03 pm

Transition to copper tubing before attaching to the vent pipe. There are many threads on installing manometers many with good photos. Do a search. Most of us use that manometer.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

Re: Harmon Stoker - Smoke out the back of the coal hopper

PostBy: titleist1 On: Fri Feb 01, 2013 9:33 am

Grainger sells the Dwyer Mark II's. If you have a store near you it could save $ on shipping.
titleist1
 
Hot Air Coal Stoker Stove: Harman Mag Stoker (old style) one in basement, one in workshop
Hand Fed Coal Stove: Harman Mark III on standby for long power outages
Coal Size/Type: Rice/Anthracite; Nut/Anthracite

Visit Lehigh Anthracite