PIPING STRUCTURE OF HOT WATER SUPPLY DEVICE

PROBLEM TO BE SOLVED: To provide a piping structure of a hot water supply device capable of easily aligning through-holes for a temperature sensor respectively formed on an outer pipe and an inner pipe, even when the piping is composed of the outer pipe and the inner pipe. SOLUTION: As hot water piping 90 is composed of the outer pipe 91 made of metal and the inner pipe 92 made of synthetic resin, scale can be easily separated even when it is attached to the inner pipe 92 made of synthetic resin, and clogging of the piping caused by scale can be effectively prevented. Here, as the through-holes 91b, 92a for mounting a temperature sensor 93 are formed on the outer pipe 91 and the inner pipe 92, and the through-holes 91b, 92a can be positioned by engaging a recessed portion 91c and a projecting portion 92b respectively formed at an outer pipe 91 side and an inner pipe 92 side with each other, the through-holes 91b, 92a for the temperature sensor 93 can be easily aligned, and assembling work of the warm water pipe 90 can be efficiently executed. COPYRIGHT: (C)2009,JPO&INPIT