Joined: Wed Jan 04, 2012 4:34 pm
Stove/Furnace Make: undecided
dfridleyjr wrote:Hello all ....I am new to the forum and I am in the process of the first time lighting of my AA220 right now. At 120F and working through the idle firing process at the moment. This is my first boiler of any sorts. So I will only be able to provide limited information and only specific to this model.
dfridleyjr wrote:Thanks greatly for the input. Right now the Low Limit is set at 150 and the HL at 180. I have not seen the boiler get over 152F on the aquastat but the Tridicator only shows about 100F.
Other than that my settings are about as you described.... I just opened the idle time to 7 as you suggested from an original setting of 6. What I am observing and wondering if it is correct is: on the end of the grate the "ash" (which has a lot of chunks in it so I have a hard time calling it ash ) is about 1 inch thick. Is the feed rate too high and not completely burning the coal or is this normal? The ash at full burn is about 1/2 inch away from the end of the grate, which is where I start to see the red hot coals and the blue flame start. Does this all sound right?
Although I am new to coal I am an ex-Naval Submariner Machinist Mate/LDO and used a reactor to generate the power/heat. I understand the heat cycle, I just need to get some better understanding on the different components in this system and the overall steady state to steady state theory. The manual from LL explains it pretty well but now that I am applying theory to practice and see real results, it opens the breadth of questions a little bit.
Thanks much Flyer.
dfridleyjr wrote:Everything is going quite well. Couple of questions:
1. When the coal is fed to the grates I am getting coal dropping to the floor of the burn area next to the ash pan (I moved the ash pan over so I am not dropping it into the pan anymore) and not onto the grates. After about 2 days now there is a gallon of coal I will need to scoop out. Is this normal or do I have something misaligned on the feeder/grate area?
2. I am using almost 2 bags of coal per day and feel (probably more hopeful) that this is more than it should be. However if I back off the feed screws the boiler will continue to burn and run the cycle completely but it is now about 1 to 1.5 inches from the end of the grate where the red coals start. I think this is too far?
Thanks in advance for your feedback.
dfridleyjr wrote:2. I am using almost 2 bags of coal per day and feel (probably more hopeful) that this is more than it should be. However if I back off the feed screws the boiler will continue to burn and run the cycle completely but it is now about 1 to 1.5 inches from the end of the grate where the red coals start. I think this is too far?