Sensing an outfire when circulating between two boilers

Sensing an outfire when circulating between two boilers

PostBy: stoker-man On: Wed Oct 08, 2008 4:09 pm

My buddy and I were brainstorming about how to sense an outfire when the 520 stoker boiler is used to circulate to another boiler. In this particular case, the gas boiler would automatically come on and take over when the stoker had an outfire. The problem was that if the gas boiler was making hot water and circulating through the coal boiler during an outfire, an L6006 wouldn't sense the outfire because the water in the pipes would remain hot at the stoker.

So, we're going to experiment with an L6006C, strapped onto the burner pipe, either inside the base or just outside the base, wherever it could sense a drop in temperature, and not be damaged by excessive heat. In my own case, with a Modine heater, I used an L6006A, with the bulb, and taped the bulb directly to the pipe and insulated around it. I'll report back once we try it.

I wonder if this same set-up wouldn't also work with the AF-150 stoker furnace.
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: Sensing an outfire when circulating between two boilers

PostBy: daluds On: Wed Oct 08, 2008 4:41 pm

Stoker-man,

Do you have the model number for the timer?

Thanks!
daluds
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice
Stove/Furnace Make: EMF
Stove/Furnace Model: DF-520

Re: Sensing an outfire when circulating between two boilers

PostBy: billw On: Wed Oct 08, 2008 4:51 pm

I hope you guys come up with a solution. I'll add it to my system. I hate to have to sift coal out of the ash pan. Yeah, I'm that cheap. Actually I'm trying to find a use for the fines that blow out of the system everyday. I hate throwing something useful away.
billw
 
Stove/Furnace Make: EFM 520
Stove/Furnace Model: GOODBYE OIL COMPANY

Re: Sensing an outfire when circulating between two boilers

PostBy: kevin12973 On: Wed Oct 08, 2008 5:56 pm

bad boy, stoker scot. Use your own name to write dangerous comments.
Last edited by kevin12973 on Thu Oct 09, 2008 7:32 pm, edited 1 time in total.
kevin12973
 
Stove/Furnace Make: EFM
Stove/Furnace Model: 1956 SF-520 hot water

Re: Sensing an outfire when circulating between two boilers

PostBy: stoker-man On: Wed Oct 08, 2008 7:28 pm

What timer?
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