Made a fix but having more issues!

Made a fix but having more issues!

PostBy: goohoo On: Sun Feb 07, 2010 8:33 am

Running an EFM 350 here...

Noticed last week I was getting ALOT of unburned coal in my ash pan. After various tests, I determined that the feed pipe had a pretty large hole in it right where it enters the housing and coal was just pouring out of it and dropping down into the pan. Gave it somewhat of a temp fix with some sheet metal and figured I was set. Well, new problems have arisen and these call for concern. :(

I've noticed lately a decently strong odor of sulfur coming from the coal bin lately (worm feeds directly into bin - no hopper here). Some days it's strong, others it's nonexistant. This morning, I checked on things and noticed there was a bit of smoke coming off of the end of the worm in addition to a small amount of moisture that had built up around the end of it. I cleared away the moisture and raked some dry coal over. It's been a few hours and I just went to take a look.. no smoke and no smell, but not sure if this will last. I also just recently checked my vent pipe (very simple run directly into chimney) and there wasn't much buildup, but I cleaned it out regardless. I'm getting a nice draft and I have a barometric damper installed.. things have been working well basically up until now. My main concern is the smoke coming from the worm. What could be the problem here?
goohoo
 
Stove/Furnace Make: EFM
Stove/Furnace Model: 350

Re: Made a fix but having more issues!

PostBy: wlape3 On: Sun Feb 07, 2010 9:14 am

You are getting some feedback from your burner. The design of the EFM is very similar to mine and I suspect your vent holes are plugged. If you go to the EFM website you can download their manual which shows the vent holes. In my unit there are seven of them. Not sure how many you might have. These are there to let the feed tube breathe as the moisture vaporizes from the conducted heat of the burner.

I plan on cleaning mine out later on today. It's the first time for me and I'll pass on what I discover.
wlape3
 
Stove/Furnace Make: Alaska
Stove/Furnace Model: 140 auger, forced hot air

Re: Made a fix but having more issues!

PostBy: stoker-man On: Sun Feb 07, 2010 11:48 am

A few reasons for your problem:

Too short of a worm. That's why the full length worms are recommended.

Not enough coal on top of the worm. You should have at least 12" of coal over the worm if you have good draft. Otherwise more. The holes in the end of the pipe must be on top. If you're not sure, check it.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Made a fix but having more issues!

PostBy: coal berner On: Thu Feb 25, 2010 11:48 pm

wlape3 wrote:You are getting some feedback from your burner. The design of the EFM is very similar to mine and I suspect your vent holes are plugged. If you go to the EFM website you can download their manual which shows the vent holes. In my unit there are seven of them. Not sure how many you might have. These are there to let the feed tube breathe as the moisture vaporizes from the conducted heat of the burner.

I plan on cleaning mine out later on today. It's the first time for me and I'll pass on what I discover.

the design of the efm is very similar to mine it should be being it was a efm design that Alaska is using
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520