Harman SF-250 New Owner Questions

Harman SF-250 New Owner Questions

PostBy: Siphen On: Wed Sep 24, 2008 1:04 pm

Very excited to be the owner of a SF-250 with water coils!

I am wondering if some existing Harman SF-250 owners can give me some tips.

What is the best coal to burn in these units?
I am about to place my first order for coal and am not sure if I should go with anthracite pea or anthracite nut coal.

how deep can I make the burning coal bed in the unit?

I was thinking of hooking the water coil up to a water to air heat transfer that I will install in my existing forced air system. Anyone else done this? Any tips?

Thanks!
Last edited by Siphen on Wed Sep 24, 2008 8:25 pm, edited 1 time in total.
Siphen
 
Hand Fed Coal Stove: Harman SF-250

Re: Harman SF-250 New Owner Questions

PostBy: SemperFi On: Wed Sep 24, 2008 3:21 pm

Great stove, I think you will be very happy. I have never owned one nor used one but just looking at the design and specs. it should heat you and the houses around you as well (that thing is a monster). It looks like a sherman tank with 4 guns pointing out the front ready to shoot old man winter in the butt. :) :) :)
SemperFi
 
Stove/Furnace Make: keystoker
Stove/Furnace Model: H.F. hopper 90k btu

Re: Harman SF-250 New Owner Questions

PostBy: LsFarm On: Wed Sep 24, 2008 4:37 pm

Hello Siphen, welcome to the forum.

Nut coal would be the best size for the SF250. The water coils are best used for heating domestic hot water.. do a site search for coil. Hilkoil, DHW, etc. you will find lots of info.

Do you have your stove installed, barometric damper installed, and ready for coal??

Take care Greg L
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

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Re: Harman SF-250 New Owner Questions

PostBy: Siphen On: Wed Sep 24, 2008 8:25 pm

Oh yea Old Man Winter does not stand a chance this year :)

Stove is not set up yet, picked it up used, it is in great shape but due to basement storage had some rust spots peppered all over. I have taken the stove apart and have completly stripped all the pieces using wire brush attachments for my drill, grinding wheel and angle grinder. All the components are stripped and I am about halfway done with the body. With any luck I hope to have it ready for paint by this weekend.

Once the stove is painted it is on to building the hearth pad, installing heat shields and getting the stove pipe installed. Will surely be installing a barometric damper.

Last weekend I built my coal bin, painted the exterior and water sealed the interior, it is all set and ready for 3 tons of coal.
Siphen
 
Hand Fed Coal Stove: Harman SF-250

Re: Harman SF-250 New Owner Questions

PostBy: Freddy On: Wed Sep 24, 2008 11:23 pm

Sounds like a fun project...not the painting & all... the kicking ol' man winter inthe butt! Yaaa, OK, the painting too. *smile*

Don't forget to pick up some carbon monoxide detectors. Seldom needed, but life savers when they are.

Oh ya...and have windows ready to be opened the very first fire, the paint will stink for half an hour.
Freddy
 
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined

Re: Harman SF-250 New Owner Questions

PostBy: LsFarm On: Thu Sep 25, 2008 2:13 am

Just a hint about the Harman shaker grate system.. if you move the shaker handle too far, the grates open up and dump the fire. I suggest when you get the stove back together, with the door open, move the exterior shaker handle and watch the grates. Take note of the fore and aft limits of the shaker handle giving you enough shake of the grates without opening a wide gap, where the coal fire can fall through..

You may want to make a chalk marke on the side of the stove showing the travel limits for the shaker handle,, at least till you have some experience with it.

You are going to really like the SF stove,, it is a really capable heater.

Greg L

.
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Re: Harman SF-250 New Owner Questions

PostBy: Razzler On: Fri Sep 26, 2008 9:39 am

Siphen wrote:What is the best coal to burn in these units?
I am about to place my first order for coal and am not sure if I should go with anthracite pea or anthracite nut coal.

how deep can I make the burning coal bed in the unit?

I was thinking of hooking the water coil up to a water to air heat transfer that I will install in my existing forced air system. Anyone else done this? Any tips?


Siphen, I burn nut in my sf250 i tryed pea but the nut will give you a hotter fire. Pea will give a longer burn time. I shake and reload every 12 hours and have gone 17 hour with no problem. So theres no need to worry about a long burn time for me, i want to get the most heat for the $$. When you load the stove fill it up right to top of the bricks i even go over the top a little. Your stove will hold around 80 pounds of nut.
The coil for the 250 is like 57" long i don't know what kind of temp you will need to make the heat exchanger work right? What will the hot water do when theres no call for heat? You will have to put a tank in the line to keep the water moving or IT WILL BOILand make steam :blowup: When i had the hilkoil in my stove i could get the water in my oil burnner up to 140* but i couldn't maintain it when there was a call for hot water or heat. ;)
Razzler
 
Hand Fed Coal Stove: Harman SF 250

Re: Harman SF-250 New Owner Questions

PostBy: Cap On: Sun Sep 28, 2008 1:16 pm

Hello Siphen and welcome,
Razzler and I both have the SF250's. It's a fine unit and a great unit to heat domestic hot water. I wrote a few posts in regards to this unit. See:
Harman SF-250 Firebox Reducer
SF-250 hot water coil

I have burned nut & stove coal Both will burn well. Fire away if you have any other questions. Good Luck.
Cap
 
Hand Fed Coal Boiler: Harman SF 250, domestic hot water loop, heat accumulator

Re: Harman SF-250 New Owner Questions

PostBy: Salemcoal On: Sun Sep 28, 2008 5:29 pm

I have an Harman sf 150 I picked up last winter. Anyone burn pea coal in the 150s or 250s? I picked up 4 tons of pea really cheap, I lugged it out of a cellar in 5 gallon buckets.
Salemcoal
 
Stove/Furnace Make: harmonsf150
Stove/Furnace Model: alaskachaning3

Re: Harman SF-250 New Owner Questions

PostBy: LsFarm On: Sun Sep 28, 2008 6:07 pm

Your SF150 should burn pea coal just fine.. the air spaces/passageways through the smaller size coal reduces the amount of combustion air getting through the coal bed, so you will have a slightly lower heat output.. but probably not a big deal. If you think that you may want to have more heat output, buy some nut coal or even stove for the really cold weather.. but I'd recommend nut size.

Forum member Greg White has a SF150, and has burnt some of my Pea coal [for my AA boiler] and he says that he can barely tell the difference from nut.. so I think you will be ok..

That's a lot of work to haul the coal in 5 gallon buckets Huh?? No need to go to the gym that week!!

Greg L
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Re: Harman SF-250 New Owner Questions

PostBy: Salemcoal On: Sun Sep 28, 2008 6:32 pm

Thanks Greg, Friends and family thought i was crazy for hauling coal up cellar stairs, but I got 4 tons for 250 dollars. The way i look at it is I put 750 dolllars in my pocket for a little hard work and it brings me closer to the goal of burning no oil this winter.
Salemcoal
 
Stove/Furnace Make: harmonsf150
Stove/Furnace Model: alaskachaning3

Re: Harman SF-250 New Owner Questions

PostBy: LsFarm On: Sun Sep 28, 2008 10:34 pm

Depending on the size of your house, 4 tons should be enough for most if not all of the winter..

Some hand feed stove owners will use a mix of nut and pea, and some use the pea as a way to slow down the burn rate.. If you have a load of nut burning in the stove, if you cover it with a load of pea size coal, the rate of burn will slow down, and the heat output will drop some..

Greg L
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Visit Hitzer Stoves