Stoker Question

Stoker Coal Boilers automatically feed the coal and have controls and pumps just like any conventions boiler. They are intended to be used as a primary heat and often have domestic hot water coils as an added bonus. They can be set up independently or in dual sytem with your existing oil/gas boiler. They can accommodate both hot water base board or steam plumbing.
bejm1
New Member
Posts: 13
Joined: Wed. Dec. 11, 2013 5:34 am
Stoker Coal Boiler: EFM
Hand Fed Coal Stove: Alaska Kodiak
Coal Size/Type: rice and nut

Post Fri. Mar. 14, 2014 8:28 am

Still kind of new to the coal heating. my question is. my main heating supply is I believe the efm ap350 the problem im having right now is there is some smoke coming out of the barrel where the coal goes. I cleaned out the pipes coming out of the stoker going to the chimney, cleaned out the below where the pipe comes out of the stoker and also cleaned out the bottom of the chimney but still have some smoke. what can I do to stop this? ive been told that the fire could be burning to hot and burning into the worm or the coils need to be cleaned. being new to coal heating not sure how I can fix this

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Rob R.
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Posts: 11342
Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Fri. Mar. 14, 2014 8:42 am

Benny, there are a lot of things that can cause this, but you have eliminated some already. First thing to check is that the smoke pipe and chimney are clean, and that the barometric damper is set correctly. If you don't have any way to measure the draft, take a match and hold it up to the hole in the "E" on the fire viewing door. The flame should get sucked into the boiler, if not....you have insufficient draft, and/or too much combustion air.

We need to know how many teeth the feed rate is set at, and what the air setting is. Start with the air setting. At the top of the blower housing on the right side you will see a pointer with some numbers...see what it is set at. To check the feed rate, you need to count how many times the ratchet "clicks" on the downward cycle of the arm. This is done by turning the power off to the stoker, and turning the gearbox input shaft by hand.

Have you verified that the air chamber is free of fines, and that the holes in the grates are clean? The auger pipe that goes into the pot also has some holes at the end that can get clogged..but I wouldn't pull that out unless nothing else seems amiss.

Lastly, can you tell us your location? There might be someone nearby that can give you a hand.

bejm1
New Member
Posts: 13
Joined: Wed. Dec. 11, 2013 5:34 am
Stoker Coal Boiler: EFM
Hand Fed Coal Stove: Alaska Kodiak
Coal Size/Type: rice and nut

Post Fri. Mar. 14, 2014 9:10 am

The smoke pipe and chimney are both cleaned out . not quite sure if the barometric damper is set correctly. the air setting is set at 5 1/2 I did have it at 7 but thought maybe that was too high and that was the problem. the feed is set at 3. as for the air chambers cleaned out I assume you mean to pull the lever next to the motor back and forth a few times if that is correct that is done every time coal is added. my location is near Hazleton,Pa
Rob R. wrote:Benny, there are a lot of things that can cause this, but you have eliminated some already. First thing to check is that the smoke pipe and chimney are clean, and that the barometric damper is set correctly. If you don't have any way to measure the draft, take a match and hold it up to the hole in the "E" on the fire viewing door. The flame should get sucked into the boiler, if not....you have insufficient draft, and/or too much combustion air.

We need to know how many teeth the feed rate is set at, and what the air setting is. Start with the air setting. At the top of the blower housing on the right side you will see a pointer with some numbers...see what it is set at. To check the feed rate, you need to count how many times the ratchet "clicks" on the downward cycle of the arm. This is done by turning the power off to the stoker, and turning the gearbox input shaft by hand.

Have you verified that the air chamber is free of fines, and that the holes in the grates are clean? The auger pipe that goes into the pot also has some holes at the end that can get clogged..but I wouldn't pull that out unless nothing else seems amiss.

Lastly, can you tell us your location? There might be someone nearby that can give you a hand.

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Rob R.
Site Moderator
Posts: 11342
Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Fri. Mar. 14, 2014 9:34 am

Your air setting is far too high for the feed rate. Adjust the feed to 4 clicks and the air to 4 also.

bejm1
New Member
Posts: 13
Joined: Wed. Dec. 11, 2013 5:34 am
Stoker Coal Boiler: EFM
Hand Fed Coal Stove: Alaska Kodiak
Coal Size/Type: rice and nut

Post Fri. Mar. 14, 2014 9:38 am

ok I will try that thank you for your help. I will post back to let you know how it is working
Rob R. wrote:Your air setting is far too high for the feed rate. Adjust the feed to 4 clicks and the air to 4 also.

Pacowy
Member
Posts: 2731
Joined: Tue. Sep. 04, 2007 10:14 pm
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite
Location: Dalton, MA

Post Fri. Mar. 14, 2014 9:42 am

4 and 4 is a good place to start. The key with the feed and air settings is to make sure that after running continuously for 45 minutes or more, the ring of ash around the outside of the burn pot is about 1-2" wide. If it is more than that, you should add feed and/or reduce air. If it is less than that, you should add air and/or reduce feed.

Mike

bejm1
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Posts: 13
Joined: Wed. Dec. 11, 2013 5:34 am
Stoker Coal Boiler: EFM
Hand Fed Coal Stove: Alaska Kodiak
Coal Size/Type: rice and nut

Post Fri. Mar. 14, 2014 9:59 am

Ok thank you for all this information.
Pacowy wrote:4 and 4 is a good place to start. The key with the feed and air settings is to make sure that after running continuously for 45 minutes or more, the ring of ash around the outside of the burn pot is about 1-2" wide. If it is more than that, you should add feed and/or reduce air. If it is less than that, you should add air and/or reduce feed.

Mike

Pacowy
Member
Posts: 2731
Joined: Tue. Sep. 04, 2007 10:14 pm
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite
Location: Dalton, MA

Post Fri. Mar. 14, 2014 10:43 am

You're welcome. Please let us know if this gets the smoke issue under control.

Mike

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bejm1
New Member
Posts: 13
Joined: Wed. Dec. 11, 2013 5:34 am
Stoker Coal Boiler: EFM
Hand Fed Coal Stove: Alaska Kodiak
Coal Size/Type: rice and nut

Post Fri. Mar. 14, 2014 11:05 am

Ill give it a day with the settings and see what the outcome is and post the results
Pacowy wrote:You're welcome. Please let us know if this gets the smoke issue under control.

Mike

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Rob R.
Site Moderator
Posts: 11342
Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Fri. Mar. 14, 2014 11:15 am

Is your coal oiled?

bejm1
New Member
Posts: 13
Joined: Wed. Dec. 11, 2013 5:34 am
Stoker Coal Boiler: EFM
Hand Fed Coal Stove: Alaska Kodiak
Coal Size/Type: rice and nut

Post Fri. Mar. 14, 2014 11:29 am

Not that im aware of
Rob R. wrote:Is your coal oiled?

bejm1
New Member
Posts: 13
Joined: Wed. Dec. 11, 2013 5:34 am
Stoker Coal Boiler: EFM
Hand Fed Coal Stove: Alaska Kodiak
Coal Size/Type: rice and nut

Post Fri. Mar. 14, 2014 6:04 pm

So far so good the changing of the air and feed settings seems to have fix the problem. I will monitor it and let you all know if there's any changes thanks for all the help. One question I do have I was told it could be the worm wearing out that may be causing this problem also is it possible

quote="bejm1"]Not that im aware of
Rob R. wrote:Is your coal oiled?
[/quote]

bejm1
New Member
Posts: 13
Joined: Wed. Dec. 11, 2013 5:34 am
Stoker Coal Boiler: EFM
Hand Fed Coal Stove: Alaska Kodiak
Coal Size/Type: rice and nut

Post Sat. Mar. 15, 2014 7:43 pm

well I just went down and checked on it and it started smoking again
bejm1 wrote:So far so good the changing of the air and feed settings seems to have fix the problem. I will monitor it and let you all know if there's any changes thanks for all the help. One question I do have I was told it could be the worm wearing out that may be causing this problem also is it possible

quote="bejm1"]Not that im aware of
Rob R. wrote:Is your coal oiled?
[/quote]

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Rick 386
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Posts: 2474
Joined: Mon. Jan. 28, 2008 4:26 pm
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work
Location: Royersford, Pa
Contact:

Post Sat. Mar. 15, 2014 8:32 pm

bejm1 wrote:well I just went down and checked on it and it started smoking again
I know Rob asked in his first post...... do you have a manometer to check your draft ??

I sure hope you have enough CO monitors.........

With the warmer temps today, it might be that you now have a lower draft in the chimney. Try cutting back a little more on the feed and air. The boiler may run a little longer to get back up to temp, but that is a small trade off to prevent the smoke coming out.

Make the adjustment and get back to us. If you don't have adequate CO Monitors, I suggest shutting down until you get some.

Rick
Master of "Trial and Error."

Pacowy
Member
Posts: 2731
Joined: Tue. Sep. 04, 2007 10:14 pm
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite
Location: Dalton, MA

Post Sat. Mar. 15, 2014 9:35 pm

x2 on the CO monitors.

Ironically, I think sometimes cutting feed and air rates during warmer weather can make draft problems worse by cooling the flue. With the current feed and air settings how wide is the ash ring after a long run?

Two additional questions: How wet is the coal? And what is the source of make-up air for the boiler?

Mike

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