Following Up on Last Year's Saga

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Parallax

Minister of Fire
Dec 2, 2013
922
Bellingham, WA
Some may recall my struggles last year with a Blaze King Ashford. We had smoke leaking into the house, smoke constantly emitting from the chimney, inadequate draft, backpuffing, etc.

When the season ended, Chris (aka BKVP) offered to have the stove shipped back and either inspected and fixed or replaced (my choice). My wife and I chose to have the stove inspected and repaired if possible -- for a couple of reasons. First because we didn't want to go through the burn-in process again (though Chris offered to have that done for us before a new stove was shipped back) and also because we hate to waste resources.

When the technicians inspected the stove, they found tons of ash that was like concrete. It was all over everything. In addition, the cat was clogged and some part or parts that normally does not need to be replaced had been eroded away. They removed all the crud, replaced all the bricks, replaced the cat and other damaged components, rehung the door with a new gasket, burned it until they were satisfied it was working and also ran a pressure test to ensure there were no leaks.

The stove was returned and re-installed. This year has been great so far. It's producing long, hot burns with no smoke leakage and, once each burn settles in, nice clean emissions with no visible smoke. Our house is more than warm enough, though we've not hit any real cold weather just yet. But we're also more familiar with the limitations of the stove than we were last year and are prepared to supplement when necessary. We have radiant heat and I've experimented with turning it on in just the upstairs zone. That seems to work efficiently because the heat radiates both upward and downward with little loss. We also have a gas fireplace that can put out quite a bit of heat. Our propane consumption last winter was very low. Our 500 gallon tank was down to 70% at the height of summer, one year after it had most recently been filled. This year, adding in a bit for radiant heat and for the gas fireplace, there should still be more than enough to get us through the year, to the next season when propane prices fall. We paid just over $1 a gallon to refill a couple of months ago.

Looking back, it seems there were a few problems last year. One was the door gasket, which had never been right. That's why we had the leakage. Took forever to figure out it was coming from the door. Second was inadequate draft, which was addressed adequately but not perfectly when the dealer increased the chimney height from 22 to 26 feet. We're in a saddle between hills and, with tall trees on three sides, the draft is still not great. The stove's glass gets dirty and we have to be really careful not to get smoke during reloads. But it's no longer so bad that we can't make manage it. I reload with great care and occasionally run a higher initial burn to get rid of some of the glass soot.

Part of the problem last year was our wood supply. It just hadn't had time to adequately dry. Now it's running at about 14%. Apparently fir dries fast. I'm making a point of getting and staying well ahead. This summer, a friend cut down 16 trees, almost all of which I got. It's maple and alder. Plus we still have about six cords of fir that's not yet been cut up. Our woodshed is full, there's tons more to split and stack, and yet more to cut, split and stack.

Part of the problem last year was user error. I was turning down the stove too soon. Now I'm letting the wood char quite a bit before turning things down. Between that and the dry wood, we're having consistently great burns.

Part of the problem was those pressed logs I turned to when our wood supply proved too wet. Blaze King ran an analysis. I couldn't make heads or tails of it because I'm not a chemist and they provided no written summary of findings. My guess is those fake logs are designed for stoves that run hotter. I believe the company's claims that there were are additives. I just think they weren't designed to smolder. That's probably the source of the crud in the stove, though burning wet wood could not have helped. I've discarded all remaining pressed wood.

As for the corrosion, Chris was wondering if some of my wood I used last season might have been contaminated. Perhaps it was cut driftwood. The first wood I burned last year had been purchased from a neighbor. It was good and dry but it might have had other hidden problems. If there's a simple way of checking for contaminants, I'd love to know.

Alas, thanks to the efforts of Blaze King and our local dealer, we seem to have turned the corner. At some point, I may try hooking up the OAK again. This time, I would get the adapter rather than just shoving the pipe into the back of the stove. In another month or so, if all goes well, I'll see if I can buy the adapter.

Many thanks to Chris and to Blaze King for standing strongly behind their product. It is a fantastic stove. Could not be more pleased with its performance.
 
Thanks for the detailed summary, you folks really ran into just about every problem in the book. I'm glad to hear that the stove is performing well now.

PS: Envious of your propane prices. Still $3+ in the Seattle area. It's below a dollar just north of you in Canada.
 
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Thanks for the detailed summary, you folks really ran into just about every problem in the book. I'm glad to hear that the stove is performing well now.

PS: Envious of your propane prices. Still $3+ in the Seattle area. It's below a dollar just north of you in Canada.

Come on up to the hills bg, lpg has been 1.49 all summer. Retail.
 
Glad to see the Ashford running well. Which pressed logs had you been using?
 
They were homefire logs, a place out of Ferndale (I think). I would drive to the factory to pick them up, big bins of seconds.

We really did run into problems last year and it was so hard sorting out what was what. Three real problems and so many other possibilities that were hard to eliminate. Quite an initiation into wood burning but I'm glad we stuck with it. There were definitely days I questioned my sanity and was ready to chuck the whole adventure.
 
I seriously doubt the Homefires were an issue. They are a premium product made out of just sawdust and similar to Northern Idaho Energy Logs.
 
Come on up to the hills bg, lpg has been 1.49 all summer. Retail.
Good price. Unfortunately that doesn't help for delivery. It's a captive market from Tacoma to Seattle. Fortunately one tankful lasts us about 4 years now that only the cooktop is on it.
 
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I seriously doubt the Homefires were an issue. They are a premium product made out of just sawdust and similar to Northern Idaho Energy Logs.

I'm sure they caused the buildup. Perhaps I was burning them too low, but they would smolder for hours on end without crashing the cat. I'm guessing they produce way more smoke when burned on low heat than the stove is designed to handle. Since the owner had no experience with cat stoves, he didn't warn me. Not his fault and I'm sure it is a good product. Just not for this stove.

Admittedly this is guesswork on my part. If you have another theory, I'd love to hear it. The buildup of ash that was like concrete began when I started using those pressed logs. I didn't know it was causing problems throughout the stove. Was able to empty the ash a couple of times. Had to break it out. When they took the stove back to Blaze King, it was so bad they had trouble getting it out and they wound up replacing all the brinks (in addition to the cat and whatever else).
 
Hard to say what the cause was. I don't recall Highbeam having a problem with the NIELs he burned in the BK. I definitely didn't notice that issue when I burned Homefires in the Castine. Quite the opposite, they produced little ash.
 
This is just another instance where Blaze King went above and beyond. I've seen it several times personally. That's why there will always be a BK heating my house!
Having dealt with them first hand, all I can say is AMEN! Chris was great. It's great to work with a company totally committed to customer satisfaction. From my interaction with another manufacturer (Lopi) when I was researching stoves, I know such policies are not universal.
 
Hard to say. I don't recall Highbeam having a problem with the NIELs he burned in the BK. I definitely didn't notice that issue when I burned Homefires in the Castine. Quite the opposite, they produced little ash.
Then it must have something to do with my setup or the way I was burning them. But if there was no cat crash, how was I to know they weren't burning hot enough? Perhaps it would have worked better if my stove had better draft.
 
It might have been the wood and not the pressed logs. With some wood and especially some wood bark like fir I will get quite a large clinker formed when I clean out the stove. That is a hard mineral deposit formed by fused silicas from the wood. Search on clinker here for some examples. There are several posts on the topic like this one:
https://www.hearth.com/talk/threads/scale-like-build-up-on-floor-of-stove.136036
 
It might have been the wood and not the pressed logs. With some wood and especially some wood bark like fir I will get quite a large clinker formed when I clean out the stove. That is a hard mineral deposit formed by fused silicas from the wood. Search on clinker here for some examples. There are several posts on the topic like this one:
https://www.hearth.com/talk/threads/scale-like-build-up-on-floor-of-stove.136036
Chris said this was far beyond anything he had ever seen before. If it was just the burning of fir, I doubt he would have been so flummoxed. In addition, as said above, this kind of ash (if one can call it that) didn't exist in the stove until I began burning the pressed logs and then built up as I used them. It also poisoned the cat as this is when I began to get continuous smoke from the chimney all the way through burns, a phenomenon that got worse over time. When I was burning fir, none of this happened. The fir was too wet and it was hard to get it to burn well. But it would eventually dry out and burn, leaving ordinary ash behind. I'm sure it left deposits in the chimney too. When I cleaned the stove pipe, I got quite a bit of soot. But again, nothing grossly abnormal.

I've no idea what caused corrosion inside the stove. Chris guesses I had some contaminated wood. That's possible, as the stuff I'd bought from a neighbor was of unknown origin. He acquired that wood when he bought the house. It was used with an old fashioned smoke dragon. But, again, the heavy ash didn't correlate at all with the burning of that wood. That was the first stuff I burned. It was nice and dry. When I turned to my fir supply, that's when I ran into problems that were obvious, which in turn led me to Homefire.
 
Glad to hear it worked out for you. Its definitely a plus having a stove MFR top-level guy monitoring these forums. One would think that more MFRs would have that thought process and be involved. I also understand that they expect us sales people to do the interaction with customers with issues, sometimes it works out, sometimes not so good. Cudos to Chris and BK. Again, that is one attractive stove you got there. Stay warm.
 
Ash can form what look like volcanic rock if its got a lot of silica in it. Commercial pellets boilers that run grass based pellets need to be specially designed for this as a conventional stove will clinker up after a bag or two.

Its great that you had the patience, dealer and manufacturers support to work it out. I expect other folks don't and that's where others get great deals on used stoves.
 
Thanks guys. Hey, peakbagger, where does the silica come from? I've noticed lots of crystaline particles in douglas fir logs. I assume this is just dried sap.
 
They were homefire logs, a place out of Ferndale (I think). I would drive to the factory to pick them up, big bins of seconds.

I've seen those bins advertised on craigslist. Quite a drive for me so I didn't get a load. Sounds like a good thing that I didn't.

Hard to say what the cause was. I don't recall Highbeam having a problem with the NIELs he burned in the BK. I definitely didn't notice that issue when I burned Homefires in the Castine. Quite the opposite, they produced little ash.

I did not have problems but I only burned like 30? of them. I didn't like them, they smoked, but I had a previously established bed of ash in the stove so any klinkers caused by the pressed logs would have been suspended in the ash. I ended up wasting the NIELs in the non-cat stove where they could burn with enough air to be smoke free. Wood burns much better in the BK.
 
Note sure on Doug Fir but grass crops are loaded with it. Its basically just dirt, the organics burn off but what remains is "ash". Ash has different fusion temperatures depending on what it is made of and what sort of combustion is going on.
 
Read the previous threads on clinkers. There are lots of them. We get several inquiries every winter by new burners discovering them in the ashes. The amount will vary with the wood and the locale. We get a lot of silica showing up in fir and soft maple. Fir bark by far produces the most for us.
 
Then it must have something to do with my setup or the way I was burning them. But if there was no cat crash, how was I to know they weren't burning hot enough? Perhaps it would have worked better if my stove had better draft.


Ok, now what's a "cat crash"
 
[Hearth.com] Following Up on Last Year's Saga
 
Yes, that's a cat crash. And it's also a cat crash, Steve, when you get your fire going nice and hot (in the cat range), engage the cat, throttle down and then the stove crashes. You come back to a cold firebox with a bunch of charred wood and you're like, "What happened?"
 
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