Might Be a Dumb Question, but Here Goes...

Modern and vintage hand fired coal stove are similar to a wood stove and in some cases can burn either. They need to be regulated and fed by hand usually every 12 to 24 hours depending on your usage. They require no power to operate making them ideal for rural settings with long power outages.
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lsayre
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Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)
Location: N/E Ohio, between Medina and Wadsworth

Post Mon. Nov. 04, 2013 10:23 am

I can't take credit for the pipe smoking analogy. Did you mean Rev. Larry perhaps? :P

But then again, I'm the one who once called you Dave ... :roll:
-Larry

Democracy rests upon the principle that collective wisdom arises from a pool of individual ignorance. A Republic rests squarely upon objective law, and fundamentally upon those laws which restrict the scope and actions of government.

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freetown fred
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Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut
Location: Freetown,NY 13803

Post Mon. Nov. 04, 2013 10:34 am

WHAT??????? dc's name ain't Dave--Well I'll be hoodwinkled :clap: toothy
"A people that values it's privileges above it's principals, soon loses both"--Dwight D Eisenhower

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dcrane
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Hand Fed Coal Stove: Crane 404
Location: Duxbury, MA./Hanson MA./Brockton, MA

Post Mon. Nov. 04, 2013 10:38 am

lsayre wrote:I can't take credit for the pipe smoking analogy. Did you mean Rev. Larry perhaps? :P

But then again, I'm the one who once called you Dave ... :roll:
I been called a lot worst than Dave before toothy so its all good.
That analogy comes from our good friend Larry Trainer (owner of Chubby)
I been waiting years for the prefect circumstance and poster to pull that analogy out my azz to amaze you all with my intellect :clap: (ohhh stop stop...no applause is necessary) :notworthy:
Last edited by dcrane on Mon. Nov. 04, 2013 10:41 am, edited 1 time in total.

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Lightning
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Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Mon. Nov. 04, 2013 10:39 am

Wow. Still pulls a -.05 with it closed. Mine drops right down to a -.01 or -.02 when it's closed. When it drops to a -.05, what was it when it was open? Are you sure it's closing? lol

Muss44
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Post Mon. Nov. 04, 2013 10:45 am

its fully closed inside, thats why I am thinking about plugging up one of the two hole in the damper. Do they make dampers complety filled in?

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lsayre
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Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)
Location: N/E Ohio, between Medina and Wadsworth

Post Mon. Nov. 04, 2013 10:48 am

Muss44 wrote:its fully closed inside, thats why I am thinking about plugging up one of the two hole in the damper. Do they make dampers complety filled in?
Why are you trying to place yourself into danger? What good will that accomplish?
-Larry

Democracy rests upon the principle that collective wisdom arises from a pool of individual ignorance. A Republic rests squarely upon objective law, and fundamentally upon those laws which restrict the scope and actions of government.

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freetown fred
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Post Mon. Nov. 04, 2013 10:52 am

I suspect they make damn near anything. I would NOT go with a solid, those gass's need to go somewhere & UP would be my druthers. .05--as you stated--"on occasion" does not sound real worrisome to me with my HITZER. Just sayin
"A people that values it's privileges above it's principals, soon loses both"--Dwight D Eisenhower

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titleist1
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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
Location: Cecil County, MD

Post Mon. Nov. 04, 2013 11:15 am

what does your manometer read when the manual damper is open?
I drive a VW TDI, heat my home & workshop with two coal stokers and have two vintage JD diesel tractors....
The EPA just loves me!!

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Muss44
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Post Mon. Nov. 04, 2013 12:23 pm

when fully open and after a few minutes it climb to .07-.09.

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Lightning
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Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
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Post Mon. Nov. 04, 2013 12:41 pm

I recently relocated my manual damper. While reinstalling it I noticed that although it's for a 6 inch pipe, It's only about 5.5 inches wide. The spring seems to hold it tight against one side while there is a crescent shaped opening on the other side. If this holds true for yours, maybe you could cover the holes in the butterfly valve like you suggested. Please proceed with caution.

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lsayre
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Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)
Location: N/E Ohio, between Medina and Wadsworth

Post Mon. Nov. 04, 2013 1:16 pm

Today 0.05" of WC with the manual damper (as it came from the factory) fully closed, and perhaps tomorrow 0.005" of WC (or less, or perhaps even internal pressure instead of draft). Without months to years of reliable chimney draft data under a complete range of all possible circumstances, I would not proceed to further restrict the MPD. I ask again why you would desire to achieve less than 0.05" of WC? I proclaim again that there is nothing wrong with 0.05" of WC.
-Larry

Democracy rests upon the principle that collective wisdom arises from a pool of individual ignorance. A Republic rests squarely upon objective law, and fundamentally upon those laws which restrict the scope and actions of government.

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dcrane
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Post Mon. Nov. 04, 2013 1:36 pm

lsayre wrote:Today 0.05" of WC with the manual damper (as it came from the factory) fully closed, and perhaps tomorrow 0.005" of WC (or less, or perhaps even internal pressure instead of draft). Without months to years of reliable chimney draft data under a complete range of all possible circumstances, I would not proceed to further restrict the MPD. I ask again why you would desire to achieve less than 0.05" of WC? I proclaim again that there is nothing wrong with 0.05" of WC.
key words here... " I would not proceed to further restrict the MPD" ... I agree totally with this.

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Lightning
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Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Mon. Nov. 04, 2013 1:54 pm

Yeah, not many like the idea of purposely closing the butterfly valve completely, which is playing it safe. Maybe you could find a manual damper that fits the pipe better. That would be best case. I understand your concern. I like to keep my draft pressure around a -.03

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Carbon12
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Stoker Coal Boiler: Keystoker KA-6
Coal Size/Type: Rice/Anthracite
Other Heating: Heat Pump/Forced Hot Air Oil Furnace
Location: Harrisburg, PA

Post Mon. Nov. 04, 2013 2:00 pm

Draft is,......for lack of a better word,.....good. A little too much draft and you're paying a little extra for safely venting toxic gasses. Not enough draft and your family will be paying a lot extra,.....potentially......
No matter where you go,......there you are.

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Lightning
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Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Mon. Nov. 04, 2013 2:44 pm

Another thing to consider too is that just because your draft is strong, in my opinion that doesn't necessarily mean that it's yanking heat away from your stove. I can see the eyebrows lifting lol.

In a stove that seals well, there won't be leaks that bring in unregulated air that will be used as a vehicle to carry heat up and out of the chimney. In this situation the only air coming in is controlled by you, no matter how strong the negative draft pressure is, at the primary and secondary air controls and is designated for combustion. We get the following equation:
Combustion air going in = combusted coal exhaust going up the chimney + some heat.

In a stove with faulty gaskets around the load door or at other seams around the combustion chamber, a stronger draft will pull more air thru the stove at these places that WILL be used to carry heat out the chimney. In this situation it would be more imperative to have a weaker draft. Here, we get an equation that looks like this:
Combustion air going in + leaking air going in = (combusted coal exhaust going up the chimney + some heat) + (air that did not serve anything productive to combustion + more heat)

So there ya have it, how I see it :lol:
Pardon the run on sentences, results may vary.

Edit: I did some clarification...
Last edited by Lightning on Mon. Nov. 04, 2013 6:30 pm, edited 3 times in total.

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