INSTANTANEOUS WATER HEATER

摘要

PURPOSE:To provide an instantaneous water heater of a structure in which a drain port of a hot water storage tank is mounted at a bottom plate via a drain tube to self-erect the tank. CONSTITUTION:A drain port 19 having a feed water port 18 disposed at an upper part and a threaded part at a lower part is disposed on a central axis of a hot water storage tank 17. A drain tube 21 having a threaded part to be connected to the port 19 at an upper part, a flat part and a threaded hole at a bottom and having a pipe for mounting a drain plug mounted in a horizontal direction is clamped at a bottom plate with a screw 29 through a disclike heat insulator 28 made of a flame retardant material at the bottom of the tube 21. With the structure, the port 19 and the tube 21 at the central axis of the tank 17 are mounted at the bottom plate thereby providing an instantaneous water heater in which the tank 17 is self-erected and welding man-hour and assembling properties are improved.