HARMAN MARK 3 air adjustment?

HARMAN MARK 3 air adjustment?

PostBy: BillyR1970 On: Mon Oct 27, 2008 9:41 pm

I have my Mark 3 fired and running perfectly. ( LOVE IT ) It is full of nut coal.My question is how many turns to set the air control knob. It is currently open 1 and a half turns and my stove pipe gauge reads 175. Will this change as the coal burns over night, and if so will it go up or down. (Dont want to have any surprizes like way to HOT) How many turns do you guys have your Harman Mark 3 set at? 1,2,3. ect.

VERY FRIENDLY FORUM AND HELPFUL..:)

Billy
BillyR1970
 
Stove/Furnace Make: Harman Mark 3

Re: HARMAN MARK 3 air adjustment?

PostBy: LsFarm On: Mon Oct 27, 2008 9:52 pm

Hi Billy, there is no set answer, your spinner knob is allowing air into the stove, but every chimney draws differently.. I know some people who run their Harman stoves with only 1/2 to 3/4 turn open, and others run it near 2 full turns open.. the size of the coal, the draft of the chimney all have an effect..

One thing to remember, coal is very slow to react.. If your stove has been steady at one temperature for an hour then it probably will stay close to that through the night.. as long as the weather doesn't change..

Do you have a barometric damper installed?? A barometric damper will stabilize your maximum draft from your chimney, If you don't have one you should get one and set it with a manometer.. There are several threads about the dampers and manometers.

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

Re: HARMAN MARK 3 air adjustment?

PostBy: Devil505 On: Mon Oct 27, 2008 10:12 pm

Some good advice from Greg there Billy..Too many variables to make things that easy! :lol:
Experience with your particular set up is the only thing that will really work. We all had to learn by trial & error but at least it seems that you have the basics down (starting & running your stove) & the fine tuning will come with time.
Last edited by Devil505 on Mon Oct 27, 2008 10:18 pm, edited 1 time in total.
Devil505
 
Stove/Furnace Make: Harman
Stove/Furnace Model: TLC-2000

Visit Hitzer Stoves

Re: HARMAN MARK 3 air adjustment?

PostBy: BillyR1970 On: Mon Oct 27, 2008 10:13 pm

Thanks for the answer Greg. Does anyone know what the ideal temps are for this stove? I don`t know what is to low (dont want my fire to go out) :)

Billy
BillyR1970
 
Stove/Furnace Make: Harman Mark 3

Re: HARMAN MARK 3 air adjustment?

PostBy: BillyR1970 On: Mon Oct 27, 2008 10:19 pm

Thanks Devil, i probably have an advantage just starting out with this coal stove, i shoe horses and have used a coal stove for work for years but never one to heat my house. Very fun as i have always enjoyed working in a coal stove. (soft coal though)

Billy
BillyR1970
 
Stove/Furnace Make: Harman Mark 3

Re: HARMAN MARK 3 air adjustment?

PostBy: BeerMonley On: Mon Oct 27, 2008 10:22 pm

i have a question to add. about the baro draft. my local harman place said i dont need one due to the legth of my chimney. is this true?
BeerMonley
 
Stove/Furnace Make: Lesiure Line
Stove/Furnace Model: Pocono

Re: HARMAN MARK 3 air adjustment?

PostBy: Devil505 On: Mon Oct 27, 2008 10:24 pm

BillyR1970 wrote:Does anyone know what the ideal temps are for this stove? I don`t know what is to low (dont want my fire to go out) :)


Again.....Too many variables! :lol: :lol:
Seriously, on warm days you can probably get your stove down to maybe 120* or so but so much depends on your chimney's draft, coal, way your stove is packed, etc......
The lower your stove temp is the harder it is to keep going. You'll find it gets easier as the weather gets colder due to better draft.
Devil505
 
Stove/Furnace Make: Harman
Stove/Furnace Model: TLC-2000

Re: HARMAN MARK 3 air adjustment?

PostBy: LsFarm On: Mon Oct 27, 2008 10:37 pm

Hello beermonley,, read some of the many threads about barometric dampers in the forums.. they are a very important item to stablilize the draft in a chimney..

Regardless of chimney height, weather, temperature, wind and barometric pressure affect how a chimney draws.. without a stable draft, adjusting the air to the fire is trying to hit a moving object. The draft can and will change with changing outdoor conditions, and unless you are there to adjust the draft, the fire can go out, or be fed too much air and cause an overfire of your stove..

With a barometric damper, the draft is stable, and the fire burns stable.

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