Harman Mark 3 stove, Good stove or not?

Harman Mark 3 stove, Good stove or not?

PostBy: BillyR1970 On: Sun Oct 26, 2008 3:26 pm

Just bought one, What do you guys think about these stoves? Any tip or advice would be great.

Thanks.
BillyR1970
 
Stove/Furnace Make: Harman Mark 3

Re: Harman Mark 3 stove, Good stove or not?

PostBy: SuperBeetle On: Sun Oct 26, 2008 3:40 pm

I have a harman Mark II that I heat 2000 sq. ft. with. I have been using it since 1993 and have had no problems with it. The Mark III is the "large" version. It is an excellent stove and will last you for many years to come.
Best advice I have for you is to search the forum and I'm sure you will find any anwsers that you are looking for.

Good luck :)
SuperBeetle
 
Hand Fed Coal Stove: Harman Mark II
Coal Size/Type: Pea, Nut, & Stove Anthracite

Re: Harman Mark 3 stove, Good stove or not?

PostBy: LsFarm On: Sun Oct 26, 2008 5:13 pm

Hello BillyR. welcome to the forum.. Your Mark III is a popular and good stove The Harman handfed stoves are well made, and do a very good job burning anthracite coal.

The Mark series and SF series from Harman have two minor issues.. the first is the shaker grates,, they can easily be moved too far by the shaker handle, opening the gap between the grates wide enough for the entire load of fire and coal to drop into the ash pan.. The technique to prevent this to look through the loading door at a clean firebox, move the shaker handle back and forth and watch the grates.. use chalk or some other marker to mark the side of the stove just how far you can move the shaker handle without opening the grates too far. After you are used to the stove the mark can be rubbed off the stove..

The other minor issue is look at the front of the front grate. You can see that when the back of the grate has a large gap to the next grate, the front of the grate is against the front of the stove and the gap is much narrower.. What happens is when the stove is burning, and the operator shakes down the ash, the coal in the center portion of the firebox gets plenty of shaking action, and the air passageways to feed oxygen to the fire are restored.. But the front of the firebox tends to accumulate ash over the front grate, and this clogs the air passageways resulting in a dark, non burning section of coal.. The technique to fix this is to take one of those annoying political signs from the road side, and using the heavy metal wire frame from the sign, make a poker with a 90* 'L' bent on the end, the 'L' should be about 3" long.. buy going through the ashpan door, you use this poker to feel for the gaps in the front grate, and poke up from the bottom, a shower of ash will fall down opening the air passagways to the coal at the front of the firebox..

With the two techniques above,, a barometric damper [recommended by Harman, and most of the forum members] and a good chimney you are ready to enjoy a great hand-fed stove..

Hope this helps..
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 Mark 3 stove, Good stove or not?

PostBy: Devil505 On: Sun Oct 26, 2008 5:27 pm

LsFarm wrote:The Mark series and SF series from Harman have two minor issues.. the first is the shaker grates,, they can easily be moved too far by the shaker handle, opening the gap between the grates wide enough for the entire load of fire and coal to drop into the ash pan.. The technique to prevent this to look through the loading door at a clean firebox, move the shaker handle back and forth and watch the grates.. use chalk or some other marker to mark the side of the stove just how far you can move the shaker handle without opening the grates too far. After you are used to the stove the mark can be rubbed off the stove..


You can also try a "STOP" block which is easy to install & remove to prevent full shaker arm travel in many Harman stoves. "Stops" For Harman Shaker Mechanisms?
Devil505
 
Stove/Furnace Make: Harman
Stove/Furnace Model: TLC-2000

Re: Harman Mark 3 stove, Good stove or not?

PostBy: SMITTY On: Sun Oct 26, 2008 6:56 pm

My Mark III sailed through the air from my tailgate to the back of my cab @ 30 mph without a scratch (just 1 broken firebrick). :lol: Bashed my bed in pretty good though... :(

It's a tough stove! :up:

Throws out some killer heat too. I upgraded from a Mark I -- should have bought the Mk III in the first place.

I have all kinds of posts on here relating to getting the stove down my stairs, to installing hot water coils:

http://nepacrossroads.com/about5614.html
http://nepacrossroads.com/about5816.html
http://nepacrossroads.com/about6469.html

I'm sure there's more, but I've got a toothache & a migrane -- Time to self-medicate! ;) :shots: :cheers:
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler

Re: Harman Mark 3 stove, Good stove or not?

PostBy: BillyR1970 On: Sun Oct 26, 2008 8:13 pm

What size coal can i run in the Mark 3? (or can i run any size) Does it matter and will it make a difference in performance. (Burn time, heat, ash. etc.)

Thank you. Billy
BillyR1970
 
Stove/Furnace Make: Harman Mark 3

Re: Harman Mark 3 stove, Good stove or not?

PostBy: hugg On: Sun Oct 26, 2008 9:20 pm

You can burn nut or pea size coal. You will get more heat from the nut coal but the pea will burn longer. You will still get long burns from the nut. Go with the nut. good luck...... hugg
hugg
 
Stove/Furnace Make: Harman / Gibraltar
Stove/Furnace Model: Magnum / CFS

Re: Harman Mark 3 stove, Good stove or not?

PostBy: bugize On: Mon Oct 27, 2008 5:08 am

:shock:
i have had a mark3 for three seasons...it will crank out some serious btu's . i have mine in the basement of a ranch and i heat the whole house,nothing to see 75-80 degrees in the dead of winter.
i work 12 hour swings shifts and when i fill the stove then leave for work it's 15 hrs before i get back home,and the stove is still belting the heat out....same temp in the house as when i leave,i have only burnt nut in mine.
i have been around wood stoves all my life,some factory made some homemade,this stove is a tank...very well built,solid and heavy.
Like gregg said...dont move the shaker handle too far or it will cause you to say words that kids and women shouldnt hear. :lol:
bugize
 
Stove/Furnace Make: Harman
Stove/Furnace Model: Mark3

Re: Harman Mark 3 stove, Good stove or not?

PostBy: joespond On: Mon Oct 27, 2008 2:03 pm

Also, Obama signs work the best for making the poker, and you can throw the sign in the fire when your done.
joespond
 
Stove/Furnace Make: Harman
Stove/Furnace Model: Mark II

Re: Harman Mark 3 stove, Good stove or not?

PostBy: BillyR1970 On: Mon Oct 27, 2008 9:48 pm

Very funny....I could get my neighbors Obama sign. To bad i ran it over with my truck FULL OF COAL...... :D :lol:
BillyR1970
 
Stove/Furnace Make: Harman Mark 3

Re: Harman Mark 3 stove, Good stove or not?

PostBy: captcaper On: Tue Nov 04, 2008 6:46 pm

I just started using my MKIII and notice there is lot's of coal that missed the ash pan when shaken. Some of it got stuck behind the shaker pivot points and jammed up. Nice stove other than that.
I made a poker from round stock from HomeDepot. .. Don't want to use my OB sign. :)
captcaper
 
Stove/Furnace Make: Harman Super Magnum
Stove/Furnace Model: Super Magnum Stoker

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