Houston..We Have a Problem. Low Output

A Coal stoker furnace or stove controls most operations including automatically feeding the coal. They are quite similar to any conventional oil and gas units and easily operated for extended periods of time. They commonly use rice coal but may use larger sizes like buckwheat. They can be used as primary heat, supplementary heat or have a dual set up with your existing oil/gas furnace.
Post Reply
User avatar
Ed.A
Member
Posts: 1638
Joined: Thu. Aug. 30, 2007 7:27 pm
Hot Air Coal Stoker Stove: Alaska Channing III/ '94 Stoker II
Coal Size/Type: Rice
Location: Canterbury Ct.

Post Tue. Nov. 12, 2013 8:06 pm

5yr old Channing III. Just fired up 1st time this season. Always cleaned and prepped, greased and ready to go.

Now we all know the factory reostat hopper control is suspect and not necessarily #1 to #5 with everyone's stove being the same. Like I said, this is a 5yr old stove, I know my settings. I cannot get it over 350* deg's @ the box, now there was a time (as recently as last season) that cranked up to #5 my output was close to 600* deg's with no unburned in the pan.

I have unburned in the pan with half the heat.

Caveat:, I've never pulled the grate. I only clear the holes and vacuum the grate to suck out the fines. Is this my issue??

Funny, my 1994 StokerII fired up and hit it's marks in 2hrs...god I love that old beast.

User avatar
blrman07
Member
Posts: 2379
Joined: Mon. Sep. 27, 2010 3:39 pm
Hand Fed Coal Boiler: Bucket a Day
Hand Fed Coal Stove: Vigilant Casting 2310
Coal Size/Type: Pea/Nut/Wood in the VC and anything that will fit in the Bucket a Day. It's not fussy.
Location: Girardville Pa.

Post Tue. Nov. 12, 2013 9:20 pm

Air flow is the suspect in this case. I would verify that the area under the grate is clean and free flowing. Check that and let us know.

Rev. Larry
Rev. Larry
Ashland Pa.

1 John 1:9... If we sin and we confess that sin He is faithful and just and will forgive us and cleanse us from all unrighteousness.

User avatar
Ed.A
Member
Posts: 1638
Joined: Thu. Aug. 30, 2007 7:27 pm
Hot Air Coal Stoker Stove: Alaska Channing III/ '94 Stoker II
Coal Size/Type: Rice
Location: Canterbury Ct.

Post Tue. Nov. 12, 2013 9:26 pm

blrman07 wrote:Air flow is the suspect in this case. I would verify that the area under the grate is clean and free flowing. Check that and let us know.

Rev. Larry
Supposedly in the 50's this weekend.... I will shut it down and check it out


User avatar
Horace
Member
Posts: 496
Joined: Thu. Sep. 18, 2008 12:15 pm
Hot Air Coal Stoker Stove: Harman ST8-VF8 / Frankenstove
Location: Central PA

Post Wed. Nov. 13, 2013 10:24 am

Is your coal source the same this year as in years' past? In other words, is this a new supply of coal that could be different from what you burned last year?

If so, I agree that it could be fines/airflow problem.
The best weapon and tool one can ever possess is patience.

btrowe1
Member
Posts: 175
Joined: Sun. Aug. 24, 2008 11:29 am
Hot Air Coal Stoker Furnace: Alaska stoker 140 Coal
Stove/Furnace Make: alaska stove
Location: South Glens Falls ny

Post Thu. Nov. 14, 2013 8:36 pm

I think you"ll be surprised when you pull the grate and find lots of fines under it. be sure the grate is reset properly. and Most IMPORTANT Rule #1, don't fill the hopper full when relighting to check..
When it's -20 below coal is the way to go.

User avatar
Ed.A
Member
Posts: 1638
Joined: Thu. Aug. 30, 2007 7:27 pm
Hot Air Coal Stoker Stove: Alaska Channing III/ '94 Stoker II
Coal Size/Type: Rice
Location: Canterbury Ct.

Post Sat. Nov. 16, 2013 2:24 pm

Welp it was fines built up alright. Instead of pulling the grate I had a can of compressed air ( computer keyboard cleaner basically) and the needle tip inserted near the base and then progressed up the ramp. Then hooked my shop-vac back up and sucked up any residuals that didn't get sucked out the 1st time.

Turned on the blower and noticeably free flowing air.

Filled the hopper back up, lit it off. It's still very warm here (like 55f*) but on setting #2 the firebox is @ 200f* and it hit that point fast.

By monday we're supposed to be back to normal Nov. temps. I'm feeling more than confident the issue was fixed.

Although my Stoker II was fine I went ahead and did that one too.


Pocono Pete
Member
Posts: 120
Joined: Tue. Nov. 18, 2008 6:58 pm
Hot Air Coal Stoker Stove: Alaska Channing 111
Coal Size/Type: Rice Anthracite
Stove/Furnace Make: Alaska
Stove/Furnace Model: Channing 111
Location: Gouldsboro,PA

Post Sat. Nov. 16, 2013 4:55 pm

Ed, I have a channing III and was having a problem with fines under the grate. If you search on this forum "channing III convection blower" there is a post by ashburnham 55 on Mon. Feb.22,2010, if you read the part about removing the grate he tells a way to clean the fines without removing the grate. You can remove the combustion motor housing and get to the area through a 2"x2" opening. This way worked great for me and I have been doing it this way ever since. The only thing I would add is when you replace the motor housing don't over tighten the bolt.

User avatar
Ed.A
Member
Posts: 1638
Joined: Thu. Aug. 30, 2007 7:27 pm
Hot Air Coal Stoker Stove: Alaska Channing III/ '94 Stoker II
Coal Size/Type: Rice
Location: Canterbury Ct.

Post Sat. Nov. 16, 2013 8:45 pm

Pocono Pete wrote:Ed, I have a channing III and was having a problem with fines under the grate. If you search on this forum "channing III convection blower" there is a post by ashburnham 55 on Mon. Feb.22,2010, if you read the part about removing the grate he tells a way to clean the fines without removing the grate. You can remove the combustion motor housing and get to the area through a 2"x2" opening. This way worked great for me and I have been doing it this way ever since. The only thing I would add is when you replace the motor housing don't over tighten the bolt.
Thanks Pete!

Post Reply

Return to “Stoker Coal Furnaces & Stoves Using Anthracite (Hot Air)”