The burning fire is upwards, which is consistent with the plate-changing boiler. Why is it called casing? Because the heating carrier is the tube casing method, whether it is the use of floor heating or domestic water, the heating part is at the top of the furnace, and the continuous continuous heating of the tube, the life of the casing Will have a certain impact. Therefore, casing boilers are the lowest-end products in three types of boilers.
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