The new FRM from EPA is not available. You could be referring to the ASTM3053 Cordwood method (which is an Alternative Test Method) ATM. EPA revoked the method in June of last year after discovering some real issues.No pricing yet but why would I chose it over the non cat 2b from a cost and performance perspective? ( anyone interested in seeing the 2b efficiency numbers on the new EPA test method? I am).
I get the smaller clearances are a big selling point but I’m not concerned with those.
As we boneheaded folks design wood stoves to meet an ever changing landscape of emissions requirements, we decrease PM, but increase efficiency. A decrease in the heat loss in the stack is a major contributor to performance issues in rear vented stoves.I don’t understand why these boneheaded engineers don’t make these little stove able to be rear vented. They’re ignoring a large demographic of potential customers.
A ceramic cat would not tolerate the shock of normal operations.Saw it in a local shop the other day, nice looking little unit. I tried to slide the cat back and forth and it was jammed 😖! Wouldn’t budge. Metal cat with small cells looks like a poor design to me.
Our combustors are vertical in their integration, not horizontal. We've learned the impact of horizontal designs in the 1980's.I ran the GM60 for two seasons, although the Cat doesn't slide like this new unit, it was situated right under the stack facing vertically. It seems counter intuitive, but I actually had consistently lower stack temps - during all phases of the burn - with the GM60 than I do now with a BK Ashford.
To be honest, unless you got a fire going good and then snuffed out the flame in the GM60, I don't think that cat really ever did anything. It never glowed, stack temps were low, the cat temp never spiked after engaged, etc. My theory is it has something to do with the velocity of the gasses traveling through the cat. I noticed the BK not only positions the Cat horizontal, they also put a little baffle behind the cat - I assume to slow down the flow of gasses through the cat for more complete combustion.
Anyways, point is, I'm not a fan of the positioning of those hearthstone cats. Seemed pretty unproductive to me.
I just made a down payment on a princess 29i.As we boneheaded folks design wood stoves to meet an ever changing landscape of emissions requirements, we decrease PM, but increase efficiency. A decrease in the heat loss in the stack is a major contributor to performance issues in rear vented stoves.
But we try....
BKVP
The boneheads thank you.I just made a down payment on a princess 29i.
He better hope word of that doesn't get to the EPA.I was also surprised when the local dealer told me he has recommended removing the cats to some of his customers due to issues he’s seen.
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