Smoke From Furnace Door When I Add Coal

 
larryfoster
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Post by larryfoster » Mon. Dec. 15, 2014 8:15 pm

Thanks for sharing

 
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Lightning
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Post by Lightning » Mon. Dec. 15, 2014 8:25 pm

I wouldn't dismiss the idea of pulling the liner at some point.

If it were me, I would keep the chimney cap so rain wouldn't fall into it but I would go after the wire mesh with wire cutters and hack it out. The mesh will clog quite fast if left in place. Now is the time to make changes while it's possible to get on the roof. Snow will be back soon.

 
larryfoster
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Post by larryfoster » Mon. Dec. 15, 2014 8:51 pm

Thanks, Lightning.

Now that you mention it, I think I'd modify the cap.

I am very reluctant to pull the liner.
I do hate to go against the advice I'm asking for here.

If I would have had this professionally installed, no one would have done it without installing the liner
I'm sure it's partly a CYA thing.

I will be burning more wood in the future along with the coal.
I just didn't have it ready for this year.

I believe I read that burning wood would necessitate a liner for safety

 
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coaledsweat
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Post by coaledsweat » Mon. Dec. 15, 2014 9:48 pm

Pull the liner or you'll be doing this again soon.


 
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windyhill4.2
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Post by windyhill4.2 » Mon. Dec. 15, 2014 9:55 pm

Wouldn't the liner be beneficial for wood & bit burning ? Just asking .

 
larryfoster
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Post by larryfoster » Mon. Dec. 15, 2014 10:07 pm

Way up in this thread, it was advised to pull the liner if I were burning only coal, windyhill.

 
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windyhill4.2
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Post by windyhill4.2 » Tue. Dec. 16, 2014 6:38 am

I thought bit coal & wood both need the liner,anthracite would not.

 
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Lightning
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Post by Lightning » Tue. Dec. 16, 2014 8:25 am

The liner just reduces the amount of room for soot to accumulate, therefore it will build up and choke sooner.


 
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windyhill4.2
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Post by windyhill4.2 » Tue. Dec. 16, 2014 8:45 am

Thanks Lightning, That makes sense.

 
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Berlin
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Post by Berlin » Thu. Dec. 18, 2014 6:56 pm

Lightning wrote:The liner just reduces the amount of room for soot to accumulate, therefore it will build up and choke sooner.
It does that and then some. It increases the area of the flue at all times allowing a greater volume of air at a given draft which prevents smoke out the loading door. The larger area encourages soot to fall off the walls before it builds up; this is because in a smaller tube the material (soot) has a greater tendency to cling to itself and stay put rather than fall off. It also eliminates the chance of an eventual detioration and collapse of the liner itself.

 
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Post by locpicker » Fri. Nov. 30, 2018 8:02 am

You know I was getting all ready to get on here and complain about our stove and last night it almost ran us all out of the house on thermal runaway.

When I first installed it I knew the draft was wear but we had to use it anyway so we had a low stack temperature and water making sludge and then I was using treated coal that had a little bit of oil added to make it burn better.

What this combination did for us was to completely stop up the stove pipe and even the hole that the stovepipe attaches to at the back of the stove so that smoke was backing up and coming out the door. You would not even believe that it would be possible for smoke to pass through all this mess but it did.

I also added this special chimney cap that turns with the wind direction and also increases the draft - well worth the money and found at famco.com .

Well. I just changed the stove piping and let my mom build the fire and left the draft fan off because I did not know what it would do and also did not check the draft. We did levae the feed door draft wide open though and I woke up later and smoke was all in the house.

I hurriedly went down to see what was going on the furnace was in thermal runaway so I completely closed the feed door draft all the way and the temperature immediately started going down. The temperature on the fan control was maxed out for a while so it had to be over a 300 degree air temperature. It was so hot that the outer liner on the flex duct had melted on the bottom.

This was all because I had added the thing from famco and raise the draft from .01 to .03 and we actually had a decent draft now.

Needless to say we are in a warm house now.

The old furnace we had was a 1950's Williamson that literally fell apart and it is now looking like this is going to do twice as good and use less fuel.

BTW I went to college to learn how to do this stuff so if I have had training and it done this to us you need to be even more careful if you do not have a lot of experience. We have used coal here ever since the oil crisis way back when and are very familiar with how things work.

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