This one makes me laugh so hard I fell on the floor! Yes, I've had it happen when my AA's were brand new, because no one ever told me to save some ash (from where?) to cover the ashing plate 3" deep......... and the baro BLASTED off like the space shuttle! (yes, three screws in each joint helps...and is code also.) It added more drama due to the fly ash enjoying it's time for fun also. It gets your attention, and scares the hell out of you and everyone nearby. THIS IS NOT a good time to demo the boiler for friends and family....let it run a few days, get used to it, and make a decision how many alpha males are going to be in your home. If you say 'ONE', that would be the correct answer. You need to learn the tricks of the trade and respect the beast at all times.
Just yesterday I heard about a used AHS130 being fired for the first time..... and the neighbors heard a BOOM.....yup, same one we are talking about. The owner was told by a 'friend' that this could occur at shutdown if it was stoking hard. Anyway, the neighbor walked up to the boiler, grabbed the observation door knob and slide it sideways, peering inside.......do you know what happened yet?.....BOOM! He had sunglasses on fortunately, but he went backwards on his butt.
Be careful...especially when its a new toy. I know Dewey has used the Keystoker Koker for some time,
and I have never heard of a puff from any of their products.
What is the story with the Koker now?