What is the minimum and appropriate distance between the bottom of the furnace or backburner chamber and the bottom of the drum in a fuel-gas steam boiler?
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On the premise of meeting the breathing space requirements, the amount of water between the bottom of the furnace or backfire chamber and the bottom of the boiler drum should not be too small. So, what is the appropriate distance? As shown in the picture (strength calculation passed).
You need to arrange a sewage device down below. At least it's higher than that pipe~