automatic feed

I just hooked up my marmon magnum stoker stove last night and it was some job.I purchased it from a dealer at a wholesale price so i had to put it together. the directions were just plain awful. anyway my question is whats the proper setting for the feed control? i played with it for a couple of hours and still i am not sure. as of last night the coal was burning great, maybe a little too high of a flame but the owners manual says nothing about flame.it does show a black & white picture which does nothing for me. i do beleive i have it set on a med feed. any help would be great. thanks j

You should have 3/4"-1" or so of ash on the end of the burn plate when really burning. That is about good for any stoker stove. If you are pushing hot coals off the end, The adjustment should be backed out 1/2 turn (counter-clockwise) at a time on the adjustment settings.

If you have a black box control system, you may have to reduce the MAX feed down a few numbers. Only do a small change at a time and wait at least an hour to see what has changed.

Don't rush it. Coal takes time to adjust.

Every house/heating is different, what works for one person, may/may not work for another. Every setup is a bit different.
A lot of fine tuning and experimenting sometimes helps (and reading alot on here too!).

Don't worry about the flames, many stoves it will hit the top of it when really cranking.

What type of chimney or Direct Vent (DV) option do you have? do you have a Baro Damper? etc....maybe some details of your setup.

The Harman control box is set up for a Tstat which needs a properly set max fire rate and idle mode to work properly. As WNY stated the key word is patience, any changes need time to stabilize.

First thing to do is plug the combustion fan into the outlet feeding the stove so it runs all the time. Then make sure the draft is right both in the flue and in the stove. You should have -.04 to -.06 W.C in the flue and -.02 to -.04 WC in the stove (there is a small bolt under the main door to check the stove pressure). Adjust the baromettric damper to acheive the proper flue draft and then adjust the plate on the combustion fan to achieve the proper stove draft. These settings are an important first step IMO.

If you set up the stroke adjustment to provide a full fire with no burning coals falling off the grate while shorting across the Tstat terminals this will ensure you will never have too big a fire. Next you can disconnect the short from the Tstat and set the idle for minimum by playing with the timer settings. Typically you will end up with 1 or 2 minutes on and 12 to 15 minutes off. Make sure non of the timers are set to zero. You can also select the amount of time the convection blower stays on after the stoker motor stops. 5 minutes is a good all around setting. Once the idle is verified you can reconnect the Tstat and you should be ready for any conditions.

Make sure you empty the small tray under the stoker mechanism every time you add coal or remove ashes. The fines will build up and go everywhere if not. Also the lever under the grates needs to be opened every couple of weeks to remove the fines from under the grates. A good vacuum will make sure you keep the stove and doors free from ash and can clean up the ash and coal that will always be around the stove.

Enjoy the savings and the even heat that coal has to offer, and welcome!

"remove the fines"

What are "fines"

They are very fine coal particals, almost dust, that collect in the little metal tray that slides into the side of the stoker assembly. I dump mine in with the ash.

fines are what you get when you violate EPA regulations with your stove... JK