Self-assembly hot water mat

A self-assembly hot water mat capable of being assembled with other self-assembly hot water mats, having four sides, and including a path for circulating hot water, the self-assembly hot water mat comprising:

• a plurality of hot water passages formed in the self-assembly hot water mat to provide a plurality of hot water flow paths;
• an inlet formed at each of the four sides, through which hot water flows in;
• and
• an outlet formed at each of the four sides and paired with the inlet, through which hot water flows out,
• wherein a plurality of inlets and a plurality of outlets are connected to the plurality of hot water passages, and hot water flowing in through the inlet at any one of the four sides flows out through the outlet at any one place selected among the four sides via the hot water passage,
• wherein one or more bypass valves are installed at the plurality of hot water passages and are opened/closed to form one or more different hot water flow paths,
• wherein the plurality of hot water passages are hot water flow paths formed in the self-assembly hot water mat,
• wherein the pipes comprise:
• a main pipe extending from the inlet of the first side to the outlet of the second side and forming a largest length among the pipes;
• a first bypass pipe formed to extend from the inlet of the second side to the outlet of the fourth side;
• a second bypass pipe formed to extend from the inlet of the third side to the outlet of the first side;
• a third bypass pine coupled to the main pipe at a point separated from the inlet of the first side at a certain distance and formed to extend from the coupling point to the inlet of the third side;
• a branch pine branched from the first bypass pipe and formed to extend to the outlet of the third side;
• and
• a plurality of connection pipes connecting the pipes.