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General Outdoor Furnace Discussion / Johnson forced air to water conversion

« on: September 22, 2012, 09:15:14 PM »

New user here. I converted my Johnson 9000 series forced air add on burner with a water jacket to use as an outdoor burner. Anyone else tried this? Used it last winter, but it was very mild. I have a 4 core 20"x24" heat exchanger, one pump returning water 110' back to the burner and 1" pex line connecting the two. Seemed to work well, but should I have two pumps moving the water at that distance? I have aprox. 40 gals around the burner and then whatever the volume of the PEX and exchanger.