Barometric damper, my initial impression of its potential to save coal

User avatar
McGiever
Member
Posts: 6115
Joined: Sun. May. 02, 2010 11:26 pm
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek
Location: Junction of PA-OH-WV

Post Wed. Dec. 06, 2017 11:20 am

Owning a AA with a baro installed, I have seen on very windy days my flapper cover still clang in and out making a dinging noise.
It's easy to say, "One size does NOT fit all "when it comes to draft effect in any given installation.. ;)

User avatar
hotblast1357
Member
Posts: 3134
Joined: Mon. Mar. 10, 2014 10:06 pm
Stoker Coal Boiler: 1984 Eshland S260 coal gun
Coal Size/Type: Lehigh anthracite pea
Other Heating: oil furnace
Location: Peasleeville NY

Post Wed. Dec. 06, 2017 11:26 am

Absolutely! It is probably the only thing that no one here can say for sure compared to someone else. Almost like coal consumption!

Every install is completely different.

User avatar
Lightning
Member
Posts: 8689
Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Wed. Dec. 06, 2017 11:28 am

I didn't mean to blow up the thread relating it to hand fired stoves. :oops:

It's all Fred's fault :lol:
Last edited by Lightning on Wed. Dec. 06, 2017 11:31 am, edited 2 times in total.


Pacowy
Member
Posts: 2879
Joined: Tue. Sep. 04, 2007 10:14 pm
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite
Location: Dalton, MA

Post Wed. Dec. 06, 2017 11:28 am

hotblast1357 wrote:
Wed. Dec. 06, 2017 11:20 am
Mike even if it this would have been clearly labeled a aa/ahs thread, the people still would of commented that have other types of appliances opening the can of worms!
Probably, but at least I would have made a better effort to stay out of it. :lol:

Mike

User avatar
windyhill4.2
Member
Posts: 5302
Joined: Fri. Nov. 22, 2013 2:17 pm
Stoker Coal Boiler: 1960 EFM520 installed in truck box
Hand Fed Coal Stove: Crane 404 with variable blower
Coal Size/Type: 404-nut, 520 rice ,anthracite for both
Location: Jonestown,Pa.17038

Post Wed. Dec. 06, 2017 11:38 am

Rob R. wrote:
Wed. Dec. 06, 2017 10:54 am
If I cover the baro on my EFM on a day like yesterday (warm and windy) will burn all of the coal in the pot and go out. I imagine the same is true for a Keystoker.
Rob, that is good to know that .....
Makes me feel better about installing a " worthless gadget " :roll:
I never felt like i had wasted my time installing the baro ,as i have seen it quite busy many times doing it's job. :D

User avatar
lsayre
Member
Posts: 12827
Joined: Wed. Nov. 23, 2005 9:17 pm
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW), ComfortMax 75
Location: N/E Ohio, between Medina and Wadsworth

Post Wed. Dec. 06, 2017 11:38 am

For the AHS Coal Gun design, the barometric damper is a safety device as opposed to a fuel saving device. I recall an AHS technician telling me a number of years ago that there was one (and only one) recorded instance wherein a chimney had such powerful draft that it sucked the flapper closed on its own and then pulled sufficient air through the coal bed from below to the extent that it overheated the boiler and then eventually migrated the fire into the hopper. My chimney does not routinely draft anywhere near that well, though it might potentially do so in a sustained period of extremely high wind.

With the tombstone cover always in place (except during start-up) I've never witnessed chimney draft pulling in my flapper. But the fan instantly snaps it closed. The most draft I've ever witnessed on my manometer was about 0.22" when I had my Type-M foiled over, but it only hit that level intermittently in conjunction with occasional high wind gusts. I'd have to assume that there have been multiple times when my chimney pulled somewhat more than 0.22" when I wasn't there to observe it.


User avatar
Rob R.
Site Moderator
Posts: 11665
Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Wed. Dec. 06, 2017 12:05 pm

McGiever wrote:
Wed. Dec. 06, 2017 11:20 am
Owning a AA with a baro installed, I have seen on very windy days my flapper cover still clang in and out making a dinging noise.
It's easy to say, "One size does NOT fit all "when it comes to draft effect in any given installation.. ;)
clanging is one thing, staying closed long enough to make the boiler run hot is another.

I agree that each install is different. I would probably feel better about running an AA with no baro than an AHS, but I still think it is a toss about about mitigating the risk of overheating vs the risk of a baro sticking open.

User avatar
hotblast1357
Member
Posts: 3134
Joined: Mon. Mar. 10, 2014 10:06 pm
Stoker Coal Boiler: 1984 Eshland S260 coal gun
Coal Size/Type: Lehigh anthracite pea
Other Heating: oil furnace
Location: Peasleeville NY

Post Wed. Dec. 06, 2017 12:29 pm

Why rob? The auger vs hopper?

User avatar
Rob R.
Site Moderator
Posts: 11665
Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Wed. Dec. 06, 2017 12:34 pm

Yeah - I am not sure if it would matter in the end, but the AA will surely run out of coal first.

User avatar
hotblast1357
Member
Posts: 3134
Joined: Mon. Mar. 10, 2014 10:06 pm
Stoker Coal Boiler: 1984 Eshland S260 coal gun
Coal Size/Type: Lehigh anthracite pea
Other Heating: oil furnace
Location: Peasleeville NY

Post Wed. Dec. 06, 2017 1:08 pm

Absolutely it would, and as I’m sure u will agree, I just don’t see anyone’s chimney drafting hard enough to keep the site door shut and pull through the fire bed to create an over fire, like u say clanging is one thing, but it won’t stay shut.

I think if there is one manufacturer that doesn’t really need one, it’s the aa and ahs as far as it causing overfiring, to much draft might cause the fire to cool quick, in effect making the fan come on sooner, but idk.

Post Reply

Return to “Coal News & General Coal Discussions”