Mark III Newbie

Mark III newbie

PostBy: msband On: Mon Oct 29, 2007 11:27 am

The house I just bought came with a Harman Mark III. It's missing a fire brick and looks like the asbestos wadding is missing around the glass. other than that it looks to be in good shape.

I've never owned or used a coal stove. Any advice would certainly be helpful.


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PostBy: coaledsweat On: Mon Oct 29, 2007 11:46 am

Firebrick is available at almost any brickyard for about a buck apiece. Most stoves use what are called "splits" that are 1/2 as thick as a normal firebrick, about an 1 1/4" thick.
The gasket is a rope made from a fiberglass like material and is available at most stove shops in a variety of sizes.
Last edited by coaledsweat on Mon Oct 29, 2007 3:01 pm, edited 1 time in total.
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

PostBy: ktm rider On: Mon Oct 29, 2007 2:24 pm

Yep, coaledsweat pretty much answered that one. You can get the gasket at the local Lowe's also. If I were you I would fire that baby up and enjoy it.
ktm rider
Stove/Furnace Make: AHS Multifuel
Stove/Furnace Model: CO 55 with oil backup

PostBy: msband On: Tue Oct 30, 2007 8:50 am


The manual says I can burn pea, nut or stove coal. Any preferences on that?

Thanks for your help.

PostBy: Richard S. On: Tue Oct 30, 2007 9:00 am

Each will provide the equal amount of BTU's per ton but the the nut will burn faster, thepea will allow you to control it easier but takes alittle longer to get it ripping.

Stove is huge and not necessary, generally cost more too.
Richard S.
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

PostBy: CoalHeat On: Tue Oct 30, 2007 8:09 pm


I have a Mark I, same design as yours only a lower heat output.

Just remember, the window has gasket material on the sides only, to allow secondary air to enter the stove, a sort of "air-wash" that helps keep the glass clean.

I use pea coal in my stove. The nut will work also, I did not have good results with stove size coal.
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Baseburners & Antiques: Sears Signal Oak 15 & Andes Kitchen Range
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

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