I found out why it was popping off.... after reading the suggested material, I found out that my expansion tank wasn't working properly.... it was over 30 years old and rusted to death and bent at the fitting. Not that the external appearance matters, but I'm pretty sure either the bladder was bad or somehow the air leaked out. Either way, I didn't want to chance it. On top of that, I had water coming out my automatic air bleeder on top and everything was very corroded. Finally, I had the circulator pushing toward the expansion tank which I found out was a no no. So, I cut everything back apart, installed a new expansion tank, air scoop, and automatic bleeder on top. Fired it all backup and running between 15 and 20 lbs now... that part is working nicely. I'm having problems keeping the fire burning without overheating and dumping heat into my registers.
I've tried the following settings with no luck, it always burns out on me.
1. Feed 4 1/2 out, on 4 min, off 14 min.
2. Feed 3 1/2 out, on 3 min, off 10 min.
(Both these settings, the coal seems to burn all the way back to the point of feed, so I'm thinking maybe I'm starving it of coal, not sure though)
3. Feed 3 out, on 5 min, off 10 min. ( this was overfiring and dumping heat )
It seems very hard to keep it burning, without overheating and dumping heat.
Anyone have suggestions on settings??? Any help would be greatly appreciated.
I also have a low draft (.01 to .02) which I think is because it was 90+ deg and high humidity when he checked it. But when a flame was placed near the baro, it was drawing the flame into the pipe, so it seems like it has some draft. I have a CO dectector 2 feet away from the stove, sitting on the floor with digital readout and has never gone off of zero so it seems safe.
I've thought about plugging burner fan directly into wall outlet and run constant and then just reduce feed down. Any ideas?
Thanks everyone. I think once I can open this baby up this winter, I'm going to love it. The wife already loves the constant temp on the domestic compared to the old oil burner.