All solid -fuel boilers are “omnivorous” and can work on any type of fuel that are listed above. Now gas generator or pyrolysis boilers working on wood, which are loaded into the boiler once a week, have appeared. This operating mode occurs due to fire burning. But this happens this way, a high pile of logs that burn not from below, but from above, falls into the furnace. The fire gradually drops from top to bottom, giving its heat heat exchanger.
