No. The test is done a fireplace referenced in the standard.
So if you test in one fireplace how can you apply that to others which are built completely differently? Yes I know they use different standards for different aspects of testing. I was just asking if there were other approved standards similar to ul 127 or ul 1777. I had never heard of any and was just curious.
At those temps arnt there problems with condensation and creosote buildup? Or are you doing it late in the burn?
I wish I could post pictures of safety tests! Stress is putting it mildly! We actually have to open the door incrementally until we hit peak temperatures. We toss in brands every 8 minutes. Brands are 1 x 1's stapled to look like waffles. We replicate worst case scenario. We run with cat in place, without it in place and also covered (simulate plugged cat).
You can do it anytime during the burn, just so long as the bypass is closed. I have done it on very high burn rates. But most often dealers demonstrate this on medium fires, because they try to keep glass clean as possible. As for chimney fires in demo pipes, never heard of one.
This is almost always impossible without major demolition. Not too many people are ok with you destroying drywall, siding, and stone during an inspection. It would be better to just say it’s not approved in my opinion.
Many dealers do suggest to owners they need to upgrade their fireplace. This entails, as you noted, a complete remodel.
Well no I doubt there are many chimney fires in demo pipes. But if you are running 200 to 250 internal temp right above the stove there is no way you can be maintaining temps above the condensation point at the top of the chimney. That means creosote buildup. So if people burn their stoves like the demo they will have problems
I don't believe there are any higher incidents of chimney fires in stoves based upon technology. As a whole, stoves today are vastly better. Industry experts are getting better at educating and sweeps (you) are the front line to informing people of the need to make changes to their burning habits/fuel when you inspect their chimneys.
Yeah I never said there were more incidents of chimney fire based upon tech. Just that you can't routinely run a wood stove with exhaust temps at 200 to 250 right above the stove unless it is at the tail end of the fire. If you do this you will have big problems with creosote buildup.
Operating temps and stack length go hand in hand to be certain as it would apply to accumulation.
The stack length in this case should be a minimum of 15-16' with a certain amount of that stack exposed to cold outdoor temps. That guarantees creosote condensation, at least in the exposed portion of the stack . Last season folks running 200-250º stack temps on their BKs reported having messy chimneys and recommended to go no lower than 300º.
It’s hard enough to sell a $6K job to someone that’s trying to “save” money. Increase that to $10K + and it’s just not going to happen 99% of the time.
Even dry wood is going to be around 15-20% water. To keep creosote accumulation down, stack temps need to stay up until this moisture and volatiles are boiled off.
www.hearth.com
