plumber wrote:Matt and everyone reading this thread , don't think I'm knocking the boiler. The issue is due mostly to my house and the way it's piped. However, the aquastat is killing me! Today I got a little innovative. I installed a 3/4 tee before the boiler drain and piped a 3/4" line to the supply side after the spyrovent. Ran a 006 circ on constant power, now I have a nice boiler bypass at the low point of the boiler, bye bye stratification! It would be sweet if that tapping was at least 1 1/4" there's a lot of water below the return tapping. I also eliminated the aquastat issue by installing a zone control relay. When my cold zone calls, it drops the temp down to 135 ish very briefly. Now that its allowed to circulate it stays there very briefly, less than two minutes. Once the hot water completes the loop its over 160 quickly.
My other issue is completely my fault. I took advantage of the boiler being down and CLEANED it. I'm ashamed of myself. I'm surprised I had fire. The box under the grate was almost completely full of fines. Got to pat more attention to it. I also brushed the tubes, and got quite a bi of ash out. I need more maintenance.
How often should I clean this thing?
I spoke to Axemen Anderson about the boiler design, and they put the return into the middle of the boiler to avoid shocking when you get the cold water returning to the boiler.
I put in a primary this fall, but I screwed up the piping also. I put the zones off the return line, instead of the feed.
Something to plan for next summer...