I bought a bull from a guy who had an outdoor boiler and a slab construction house. The air handler is in the attic of his house, making the boiler "downhill" from the "A" coil. He said that the installer had to bleed a lot of air from the attic mounted "A" coil, and every time the power went off for more than a few minutes, he had to climb up in the attic and bleed it again. I suggested that he add a tee fitting in the attic at the "A" coil and run a line from the tee down into a closet and put a valve there. Maybe it would eliminate having to climb up in the attic. He was excited about the idea, and was gonna try it, but I haven't ever run across him to ask him how it worked.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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