Chimney Size for Bit Boiler

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Robo
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Posts: 11
Joined: Tue. Feb. 09, 2016 8:44 am
Stoker Coal Boiler: Efm520
Hand Fed Coal Boiler: National 200 burning Bit
Hand Fed Coal Stove: Hitzer 50-93, Warm morning 520 Bit
Coal Size/Type: Lehigh rice
Other Heating: Lopi Freedom wood burning insert

Post by Robo » Tue. Feb. 09, 2016 9:04 am

I'm looking for some advice on sizing a chimney.
I'll be installing a National 200 boiler in a detached building to heat a garage and feed hot water back to the hot water heating system in the house. The boiler is about 110k BTU and has 5 grates and a 9" round exhaust. I plan on building a tile-lined masonry chimney inside the building.
It will be approximately 27' tall.

Am I correct in assuming that I need to use the 8"x 13" liner?
The smaller square liner will only take a 6" input and I think reducing from 9" to 6" is too extreme.

Thanks in advance for any advice.
I'm in SW PA just East of Pgh.

 
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McGiever
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Joined: Sun. May. 02, 2010 11:26 pm
Location: Junction of PA-OH-WV
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hand Fed Coal Boiler: BUCKET A DAY water heater
Hand Fed Coal Stove: Warm Morning 414A
Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
Other Heating: Ground Source Heat Pump and some Solar

Post by McGiever » Tue. Feb. 09, 2016 4:32 pm

Welcome *Robo* :D

No,you wouldn't want to choke down any coal appliance, especially a bituminous burner with all it's soot to cling on the inner surface of the chimney.


 
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Berlin
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Joined: Thu. Feb. 09, 2006 1:25 pm
Location: Wyoming County NY

Post by Berlin » Tue. Feb. 09, 2016 10:48 pm

No. You need to use 12/12 liner for that appliance on bit coal - and make it tall.

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