I am adding a picture of my just started up AA 260. I posted some comments and questions on my startup in Karen's forum and realize that they didn't belong there. Thanks to LS Farm, my 260 is now firing beautifully after I encountered the same kind of firing issues he did on his installation and shared the experience with the board and then patiently with me again when I reported my problems. THANKS LS !. ]My run from this boiler and storage tank is around 225 feet with 190 underground and I am able to transfer enough heat to keep my 2400 square foot home heated down to about 5 degrees F using a small F-5 Taco. With a higher rate pump I now know I can get enough heat transferred this distance to heat the home under any condition. I like the thermal storage operationally as it takes out the swings or at least averages them out well so that the AA just sits there and fires about every 40 minutes or so for around 5 to 10 minutes to keep the thermal tank at 185 degrees F. I intend on adding a pex loop onto the AA domestic water coil side with antifreeze to heat a 1200 sq foot partial auto storage and maintenance shop which is directly adjacent to the AA. The building the AA is in was designed by me and built just for this installation. I have a sloped coal bin on back side that can hold 6 tons of pea and feet the AA auger. The flange on top of the tank is for a solar booster loop addition that I have planned to attempt a heat up of the tank in the summer to the point that all my domestic hot water can be from solar and the tank with its natural loop will keep the AA warm thereby preventing condensation and corrosion. That's the plan.
Right now the not completely insulated 750 gallon tank heats the 600 sq ft boiler room to 70 degrees or so such that I have an entrance door into the 1200 square foot insulated maintenance shop that is fairly well warmed without the loop. Bottom line is that this 260 is going to esily heat about 4200 square feet of building space once everything is hooked up.
One more point. The loop from the 260 to the tank is natural circulation without a pump. I really like how it operates. The piping is 2 inch, but I believe 1 1/2, maybe 1 1/4 would have worked. I received the 2 inch pipe with the used AA so the only effort was installation.
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