Fan coil apparatus including a humidification unit and a humidification unit

1. A humidification unit for a fan coil comprising:

(a) a water mist production member:

(b) an inner container housing the water mist production member, the inner container comprising a water supply for the water mist production member and an inner container water level detector, the inner container water level detector sensing a high water level in the inner container when a water level in the inner container is at a high water level position;

(c) an outer container comprising a reservoir and an outer container water level detector, wherein the outer container is positioned to receive water which leaks from the inner container, the outer container water level detector sensing a high water level in the outer container when a water level in the outer container is at a high water level position;

(d) a water supply conduit connectable to a source of water and in fluid flow communication with the inner container; and,

(e) a shut off valve provided in the water supply conduit, the shut off valve operable between an open position and a closed position,

wherein the shut off valve is in the closed position when the inner container water level detector senses a high water level in the inner container or when the outer container water level detector senses a high water level in the outer container.

2. The fan coil of claim 1 wherein the inner container is positioned to overlie at least a portion of an open interior of the outer container.

3. The fan coil of claim 1 wherein the outer container has an inner chamber and the inner container is at least partially nested in the outer container.

4. The fan coil of claim 1 wherein the inner container water level detector also senses a low water level in the inner container when a water level in the inner container is at a low water level position and the shut off valve is in the closed position when the outer container water level detector senses a high water level in the outer container and when the inner container water level detector senses a low water level in the inner container.

5. The fan coil of claim 1 wherein the outer container water level detector also senses a low water level in the outer container when a water level in the outer container is at a low water level position and the shut off valve is in the closed position when the inner container water level detector senses a high water level in the inner container and when the outer container water level detector senses a low water level in the outer container.

6. The fan coil of claim 1 wherein the shut off valve comprises a solenoid.

7. The fan coil of claim 1 wherein at least one of the water level detectors comprises a float switch.

8. The fan coil of claim 1 wherein the inner container water level detector and the outer container water level detector each comprise a float switch.

9. The fan coil of claim 1 wherein the outer container further comprises a drain.

10. The fan coil of claim 1 wherein the water supply of the inner container comprises a water mist production member chamber and a water reservoir chamber wherein the inner container water level detector is provided in the water mist production member chamber.

11. The fan coil of claim 10 further comprising a separating wall provided between the water mist production member chamber and the water reservoir chamber and the water reservoir chamber is in flow communication with the water mist production member chamber.

12. The fan coil of claim 11 wherein a fluid flow port is provided in a lower portion of the separating wall.

13. The fan coil of claim 12 wherein the fluid flow port is positioned above an upper end of the water mist production member.