Water heater mounting structure

1. A water heater mounting structure for mounting a case in which a burning device is housed, to a mounting surface, via a support fitting component that is fixed to the mounting surface in a vertical direction and that has a lock-engaged portion facing upward, comprising:

a lock-engagement fitting component that is mounted to a back surface of the case and includes a fixed portion which is fixed to the back surface, and a lock-engaging portion that is joined to the fixed portion, is lock-engageable with the lock-engaged portion from above the lock-engaged portion, and has a dimension longer than that of the lock-engaged portion in a left-right direction;

wherein the lock-engaging portion is lock-engaged with the lock-engaged portion from above the lock-engaged portion to hang and support the case through the lock-engagement fitting component by the support fitting component; and

wherein the lock-engaging portion has, at a lower end, a turned-back portion that is turned back towards a front side of the lock-engaging portion and that extends substantially in an upward direction from the lower end so as to overlap the lock-engaging portion.

2. The water heater mounting structure according to claim 1 , wherein the lock-engaging portion is disposed over almost an entire length of a width of the back surface of the case in the left-right direction.

3. The water heater mounting structure according to claim 1 , wherein the lock-engaging portion has, at a lower end, a turned-back portion that extends in the left-right direction, and that comes into contact with the support fitting component in a state where the lock-engaging portion is lock-engaged with the lock-engaged portion.

4. The water heater mounting structure according to claim 3 , wherein the turned-back portion has an insertion portion in which a thickness in a front-rear direction is increased upward from a lower end so as to form an acute angle, and the insertion portion has a forward tilting front surface.

5. The water heater mounting structure according to claim 1 , wherein stoppers for preventing the lock-engaged portion from falling from the lock-engaging portion are disposed on both left and right sides of the lock-engaging portion.

6. The water heater mounting structure according to claim 1 , wherein the lock-engaged portion is plate-shaped.

7. The water heater mounting structure according to claim 1 , wherein

a mounting fitting component is fixed to the back surface above the lock-engagement fitting component, and the mounting fitting component has a provisionally attaching hole that is lock-engageable with a screw disposed at the mounting surface, and a fully attaching hole through which a screw is screwed into the mounting surface, and

the case is mountable to the mounting surface through the mounting fitting component in a state where the case is hung and supported by the support fitting component.

8. The water heater mounting structure according to claim 1 , wherein the support fitting component includes a fixed plate portion which is fixed to the mounting surface, a horizontal plate portion that is bent forward from an upper end of the fixed plate portion, and the lock-engaged portion that is bent upward from a front end of the horizontal plate portion.