Valuable lesson: NEVER argue politics online while in the process of reloading your handfired!
I knew I was forgetting something ....
Stove 850° ... pipe 850° ... boiler water TURNED TO STEAM!
Breakdown of events:
Recorded at 8x normal. First, I dove headlong into the steam & fire to close the ash door. Then raced to the indirect boiler to set the DHW temp to 150°, then raced upstairs to turn the T-stat to 80° - you can see this made a difference in the amount of steam and water blasting from the overflow pipe. Off camera I piled coal on the fire to remove the nuclear heat from the coils.
All is well. As you were.