Stoker Feed Operation After Power Outage

I have a question. I just installed a K-6 boiler and was wondering: When the power goes off and the fire goes out, does the stoker begin to feed the burn shelf when there is no fire going after the power starts again?

Yes.

We could add that, Yes, if there is no outfire aquastat installed. And, that goes for any kind of outfire you may have. If your system has no way of detecting that the fire is no longer lit, the stoker will just push coal because the triple aquastat will be telling it to.

-Don

is there a way to keep this from happening , something to shut the power right off completely when fire goes out ?

The logic exists to use a programmable relay that has a momentary switch that would turn on a separate relay that controls the power to your unit, and it would stay on , so when the power goes out, your boiler does not have any power so it goes out. Now when the power comes back ON. The boiler will only start when some one physically "makes the momentary switch" which then in turn makes the latching relay.
I use to use Potter/brumfield prog relays. $25 to $30, and there are many other functions as well. There are others out there.
And your power relay, many more choices. So you could brew this up yourself. Or maybe something already exists out there that is already put together.
I remember Buderus had a couple connections on one of their controls that did this, or just a momentary to turn on the boiler for a preset ON time interval. Same logic , just hooked to a timer.
Possible search for "programmable boiler controls" not to be confused with "programmable thermostats. "

Just thought of something, many times, where I live we have quick 2, 3, 5, second outages, it is a tree branch hitting a line and the circuit senses this, shuts off power and creates a surge to try to burn the branch off, it does this 3 times and if it can not burn off the branch the breaker at the main transformer trips off.
So to compensate for this, you would have to add on another timer relay, I believe you can get adjustable ones. Also, you would have to have a battery back up within the unit, so while power is out , it can still think while the timer is counting. This is sounding like it does not exist as a store bought item.
But I like the idea, why come back home after an outage, the fire goes out, the power comes back on and now you have a bigger clean up and a relight . Just have to get around that momentary outage.

A normally off relay that turns on the battery when de enegized "loss of power" in series with a normally on timer relay. (Off delay) All this in Parallel with the momentary switch controlled normally ON relay. That's it. should work.

Have an output of the timer relay hold the main relay ON, so in case the power comes back on the main relay is already on and waiting (the unit is running normal again), however, if the timer relay reaches its limit, it turns off and this unit shuts down. Set the timed relay for 10 , 20 , 30 minutes, something less than what your burn pots no power life is.
Also, you could integrate this idea with a battery back up system, so that when the batteries power runs out and your fire goes out, you do not have a pile of un burnt coal to clean up.

alpineboard wrote:The logic exists to use a programmable relay that has a momentary switch that would turn on a separate relay that controls the power to your unit, and it would stay on , so when the power goes out, your boiler does not have any power so it goes out. Now when the power comes back ON. The boiler will only start when some one physically "makes the momentary switch" which then in turn makes the latching relay.
I use to use Potter/brumfield prog relays. $25 to $30, and there are many other functions as well. There are others out there.
And your power relay, many more choices. So you could brew this up yourself. Or maybe something already exists out there that is already put together.
I remember Buderus had a couple connections on one of their controls that did this, or just a momentary to turn on the boiler for a preset ON time interval. Same logic , just hooked to a timer.
Possible search for "programmable boiler controls" not to be confused with "programmable thermostats. "

Just thought of something, many times, where I live we have quick 2, 3, 5, second outages, it is a tree branch hitting a line and the circuit senses this, shuts off power and creates a surge to try to burn the branch off, it does this 3 times and if it can not burn off the branch the breaker at the main transformer trips off.
So to compensate for this, you would have to add on another timer relay, I believe you can get adjustable ones. Also, you would have to have a battery back up within the unit, so while power is out , it can still think while the timer is counting. This is sounding like it does not exist as a store bought item.
But I like the idea, why come back home after an outage, the fire goes out, the power comes back on and now you have a bigger clean up and a relight . Just have to get around that momentary outage.

A normally off relay that turns on the battery when de enegized "loss of power" in series with a normally on timer relay. (Off delay) All this in Parallel with the momentary switch controlled normally ON relay. That's it. should work.

Have an output of the timer relay hold the main relay ON, so in case the power comes back on the main relay is already on and waiting (the unit is running normal again), however, if the timer relay reaches its limit, it turns off and this unit shuts down. Set the timed relay for 10 , 20 , 30 minutes, something less than what your burn pots no power life is.
Also, you could integrate this idea with a battery back up system, so that when the batteries power runs out and your fire goes out, you do not have a pile of un burnt coal to clean up.

This is something that I could possibly get going , for next heating season, my schedule is pretty full for now.