Prepare matching sliding joints and special connection tools, and then close the circuit at the sub-water collector; cut off the leakage point of the floor heating pipe, and use a clean towel or paper towel to clean the inner wall of the wound at both ends of the floor heating pipe; Put the collar of the joint into the pipe, and then expand the nozzle of the floor heating pipe with the hydraulic expander in place; put the joint into the expanded nozzle, and then tighten the collar to the root of the interface with the hydraulic The remaining joints are connected in the same way; the other loops are closed in the sub-water collector, the switch of this loop is turned on, and after the heating water is injected, it is pressed to 8 kg and observed for 24 hours. If there is no leakage from the joints, it is qualified.
