Modern and vintage hand fired coal stove are similar to a wood stove and in some cases can burn either. They need to be regulated and fed by hand usually every 12 to 24 hours depending on your usage. They require no power to operate making them ideal for rural settings with long power outages.
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Posts: 2
Joined: Sun. Nov. 23, 2008 7:11 pm
Stove/Furnace Make: Harman SF 250

Post Sun. Nov. 23, 2008 7:27 pm

I just bought an SF-250 to heat my home. I was wondering if anyone who uses that stove have ever used an extension
pipe(s) on any of the air pipes on the front to direct the air flow. I was thinking of using an exhaut from a mototcycle or something to redirect the airflow into different areas of the house. Has anyone ever done anything similar to that? Thank you.

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Posts: 7385
Joined: Sun. Nov. 20, 2005 8:02 pm
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland
Location: Michigan

Post Sun. Nov. 23, 2008 7:32 pm

There isn't enough air coming out of the individual heat exchanger pipes to be worthwhile to duct to another room.. But Harman makes a plenum that sits on the top of the stove and combines the air from all the heat exchanger pipes into a single duct which can be used to place the heat where you want it, within reason.

Greg L

Welcome to the forum.
Burning Pea/Buckwheat through an antique stoker [semi retired SSboiler],
Running an Axeman-Anderson 260M boiler burning Pea, About 150-250#per day
Farming, Fixing, Fabricating and Flying: 'spare time' what's that?

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Posts: 434
Joined: Wed. Dec. 19, 2007 7:56 pm
Stoker Coal Boiler: EFM DF520
Coal Size/Type: rice
Location: Northampton Pa.

Post Sun. Nov. 23, 2008 9:41 pm

brack, I bought the heat collector and it works good it was $80 . ;)

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Posts: 1581
Joined: Fri. Dec. 02, 2005 10:36 pm
Hand Fed Coal Stove: Harman SF 250, domestic hot water loop, heat accumulator
Coal Size/Type: Nut and Stove
Other Heating: Heat Pumps
Location: Lehigh Twp, PA

Post Mon. Nov. 24, 2008 7:05 pm

Brack wrote:I just bought an SF-250 to heat my home. I was wondering if anyone who uses that stove have ever used an extension
pipe(s) on any of the air pipes on the front to direct the air flow..
I tried it was one night when I had a piece of 2 1/8" od tubing laying around. Basically for shet's and grins. Worked good moving heat but not too practical. I have an accumulator just like Razz's. Works great. This is the best hand fired stove on the market in my opinion. You can do a lot with this unit. Go back a few years to the following links.

fire box reducers ---http://nepacrossroads.com/about638.html

water coils ---http://nepacrossroads.com/about822.html
Last edited by Cap on Thu. Sep. 28, 2017 8:15 pm, edited 4 times in total.
Reason: fixed link
Lehigh Twp.
Northampton Co., PA

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Posts: 772
Joined: Tue. Nov. 25, 2008 11:45 am
Hand Fed Coal Stove: Estate Heatrola, Jotul 507
Location: Mid Coast, Maine

Post Tue. Nov. 25, 2008 8:58 pm

The exhaust temp and the heat collector, / plenum /TEMP on my stove @ 18", run about the same.

The temp now is { low fire } 180 Stack and 165F plenum.

The heat collector helps move the hi temp from the stove location.

Glenwood "Modern Oak #116"
Fuller & Warren "Art Stewart #14" Baseburner
Jotul "507"
Gibraltar "CFS" brass doors

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