| 主权项 |
1. A method of installing an exhaust tube by inserting an exhaust tube into an exhaust pipe leading from inside of a building to outside thereof, said method comprising the steps of:
preparing said exhaust tube having one end portion and the other end portion, a through hole extending from said one end portion to said other end portion, and a recess provided in an inner circumferential surface of said through hole, said exhaust tube being formed of a flexible tube made of resin; preparing an insertion jig including an outer circumferential surface, a support portion having a projection that projects from said outer circumferential surface toward outside, and a protruding portion that protrudes from said support portion to a side opposite to said exhaust tube in a state where said support portion is introduced into said through hole from a side of said one end portion of said exhaust tube, said protruding portion covering said through hole on the side of said one end portion of said exhaust tube, and said support portion and said protruding portion being integrally formed; introducing said support portion of said insertion jig into said through hole from the side of said one end portion of said exhaust tube, and engaging said projection of said support portion with said recess, to fix said insertion jig to said exhaust tube; and inserting, into said exhaust pipe, an end of said exhaust tube on the side of said one end portion having said insertion jig fixed thereto, and pushing said exhaust tube from inside of said building to outside thereof. |
