Post Chimney Fire advise

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.
Status
Not open for further replies.

ColonialCity

Member
Dec 2, 2010
18
Pennsylvania
Had some excitement last night, I guess I'll tell the story, then ask my questions at the end. First some specs: VC Encore 2550 Cat EPA stove. 6" flue 18" horizontal section into 90 deg elbow directly into interior 6" 2100HT Supervent, 30' tall. New stove, and new chimney install this season.

Here's What happened.....
When we left for the evening, I didn't have quite the fire going that I wanted to, as I had left the coal bed get a bit too small before I loaded the stove. I loaded it with 4 decent sized splits, and I looked like it caught off before I engaged the cat and shut the primary air down the whole way. I was a bit concerned that it might just end up smoldering and going out.

When we arrived 3 hours later, I saw from the other side of the room that it appeared that the stove in fact did go out. I asked my wife to open up the cat, and open the primary air to see if it might get going. I went back outside to shovel some snow.

8-10 minutes later I hear my frantic wife yelling fire from the front door! Upon running inside, see flame or glowing from the stovepipe directly behind the stove and the firebox is a fully engulfed inferno. (My good wife had shut the damper before yelling fire) I grabbed by ABC dry chem fire extinguisher, opened the front doors, and hosed the firebox and directly into the flue. (the encore allows direct access to the flue with the bypass open) It appeared that the fire was out, but there was still quite a bit of heat from the firebox.

I engaged the cat again and now have the primary air closed, but with the wood still hot and wanting to flare up, I decided to empty the firebox to get rid of the heat.
I got the wheelbarrow into the house, unloaded the wood from the stove, and got that outside under some snow.

I never did see any flames outside, but I wasn't able to see it when I ran in. I still have access to the chaise where the chimney is installed (I need to do some drywall patching) so I was able to feel the outside wall of the 2100HT double-walled insulated. It was barely warm to the touch, so I wasn't concerned that any damage happened. I think we caught it within 5 minutes of it lighting.

After my nerves calmed down, I was able to go to bed with the thermostat set for natural gas to come on in the AM :-(

Here are my Questions:
1. Why? I inspected the chimney 3 weeks ago, barely a fuzz on the inside. Did it have something to do with the smoldering fire that night? I finally have been able to burn consistently overnight after plugging the EPA holes. Is this causing too much creosote? I think my wood quality is great, some of my splits are too old, some are too green, but most have been burning awesome!

2. How to get back and running again? Did I ruin my cat with the Dry Chem? I'm going to inspect my chimney and stove closely today to look for cracks.

Sorry for the long post.... Stay safe!
 
It doesn't sound like you had a chimney fire per say. Sounds more like an overfire, as opposed to a chimney fire. I do not know what the extinguisher would do to the cat, (I don't have a cat). It certainly wouldn't hurt for a full chimney inspection but, I think the chimney will be ok, especially considering you were able to feel the double wall and it was "barely warm". Let the stove cool and do a full inspection on the stove, and chimney. The other members with cat stoves may be able to address the cat question. If it all seems ok, no major warping, leaking, cracking. I would put a small fire as a test and see if it reacts the same way it has in the past. I would use caution, but I would lay odds you had an overfire as opposed to a chimney fire, and if the stove is ok, you can burn in it.

Shawn
 
Sounds to me like you had a smoldering fire dying for air and once you fed it it took off (ever see the movie Backdraft?).

Impressed that your wife took the time to close the damper. As for your cat, I run a pre-EPA stove without a cat, so as with shawneyboy I will have to defer to others with more expereince.
 
Upon removing the double wall stovepipe and then looking up the chimney, I see that there is a small amount of creosote in the chimney and stovepipe. The cat is broken into many pieces.

Anyone know the best place to get a new Encore 2550 cat?

Also how to clean the DRY chem residue off the enamel of the stove?
Thanks
 
ColonialCity said:
When we arrived 3 hours later, I saw from the other side of the room that it appeared that the stove in fact did go out. I asked my wife to open up the cat, and open the primary air to see if it might get going. I went back outside to shovel some snow.

8-10 minutes later I hear my frantic wife yelling fire from the front door! Upon running inside, see flame or glowing from the stovepipe directly behind the stove and the firebox is a fully engulfed inferno. (My good wife had shut the damper before yelling fire) I grabbed by ABC dry chem fire extinguisher, opened the front doors, and hosed the firebox and directly into the flue. (the encore allows direct access to the flue with the bypass open) It appeared that the fire was out, but there was still quite a bit of heat from the firebox.

I engaged the cat again and now have the primary air closed, but with the wood still hot and wanting to flare up, I decided to empty the firebox to get rid of the heat.
I got the wheelbarrow into the house, unloaded the wood from the stove, and got that outside under some snow.

I never did see any flames outside, but I wasn't able to see it when I ran in. I still have access to the chaise where the chimney is installed (I need to do some drywall patching) so I was able to feel the outside wall of the 2100HT double-walled insulated. It was barely warm to the touch, so I wasn't concerned that any damage happened. I think we caught it within 5 minutes of it lighting.

Here are my Questions:
1. Why? I inspected the chimney 3 weeks ago, barely a fuzz on the inside. Did it have something to do with the smoldering fire that night? I finally have been able to burn consistently overnight after plugging the EPA holes. Is this causing too much creosote? I think my wood quality is great, some of my splits are too old, some are too green, but most have been burning awesome!

2. How to get back and running again? Did I ruin my cat with the Dry Chem? I'm going to inspect my chimney and stove closely today to look for cracks.

Sorry for the long post.... Stay safe!

Sounds like an interesting evening for sure. Things like that have a tendency to concentrate your attention. It sounds like both you and the wife did the right things and you can be very thankful for that.

To answer your first question, just read that very carefully. Chimney was okay 3 weeks ago; good. Did it have something to do with the smoldering fire that night? Yes, but not just that night! Plugging those EPA holes is not a good way to go. It sounds like you must completely close the draft and go to bed. Not good at all. Is this causing too much creosote? Probably yes, along with the quality of your wood.

You think your wood quality is great. Why? Some splits are too old.... You'd have to explain that one to me. I've never had splits too old and we regularly burn wood 6 years or more in the stack. Some are too green. Ah ha! Number 1 problem is explained right in your words.

How to get back running. Check the stove and flue for any damage. Look for any warps. Clean chimney. Remove cat and clean with old paint brush and also I'd use something like pipe cleaners to brush up through the honeycomb. I doubt you ruined the cat but you do have to check.


Almost 100% of the time this sort of thing happens it can be traced back to poor fuel that caused most or all of the problem. That is why it is so important to be 2-3 years ahead on your wood supply as then it has the proper time to dry and not only will you not have the creosote problems but you'll also get more heat out of the wood which means you will use much less wood.

Good luck.
 
I think Shawneyboy and Remkil are both right....
Upon further inspection and much thought, I think it was just in over-fire, flames going up the chimney connector and maybe the very bottom of the chimney. There is very little creosote in the chimney and pipe. I wonder if things would have been ok if I would have engaged the cat?

Yes well, I'll chalk it up for experience i guess.... I still need a new cat.... darn thing is broke to smithereens. I guess I call the dealer and see how much they want for one.....

Unless anyone else knows where to get them at a reasonable price?

Dennis, I mean old wood.... maybe 10 years? very dry... the manual says not to burn too dry of wood or mix it with greener wood. Most all the wood I'm burning now is at least 2 years dead.
and the greener wood... I thought I heard moisture the other day, maybe it was the snow that was left on the one piece though....
 
10 year old wood should burn just fine. We've done it and I've seen 20 year old wood burned. You have to be a bit careful with that old of wood to not over heat but it does just fine. Manuals are not necessarily 100% correct! For example, as much good as I think of Woodstock, we are still at odds over dry wood. That's okay. I'll keep burning my really dry wood and smile all winter while we are staying nice and warm, burning less wood and no worry about creosote. In fact, the last chimney cleaning was June 2009. That was after 2 full seasons of burning (we heat only with wood too) to get about a cup of soot and no creosote.

As for wet wood, if it is just from snow or some recent rain, it is only surface moisture and won't affect the burn as that evaporates very fast.

Try contacting Condar for a new cat. They may not sell them direct but could give you some dealer names.
 
My local dealer has the original cat in stock for $169.00. I figure I'm best off staying local so I can get up and running quickly.
Thanks
 
You might try Applied Ceramics website. They have CATs at reasonable prices.
Are you using a stove top thermometer? They're quite useful in knowing relative temps for when to close damper, open it, refuel etc.
Not sure what you mean by "plugging the epa holes", but it sounds like you're trying to operate the stove in a way other than specified in the manual. An "overnight burn" is not the end all be all of stove operation.
 
Me personally, I would have cut the air full back, close everything off and let it level out. You took more risk with moving it in a wheelbarrow than shutting it down and letting it level off.
Only takes an ember or two onto the floor, carpet , wherever outside the stove and poof.
 
Status
Not open for further replies.