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1. (WO2019033195) BACKUP METHODS AND SYSTEMS FOR SPA SYSTEM THERMAL MANAGEMENT
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CLAIMS

What is claimed is:

1. A system for freeze protection of a spa system having a spa tub and a shell supporting the spa tub comprising:

a mains power interface;

a heater coupled to the mains power interface disposed to allow hot air to be blown into a cavity between the shell of spa system and the bottom of the spa tub; and

a temperature control for turning on the heater when the thermostat establishes that the temperature of at least one of the air within the cavity between the shell of spa system and the bottom of the spa tub and the water within the spa system has dropped below a predetermined threshold.

2. The system according to claim 1 , wherein

the temperature control is either:

a thermostat providing a control signal to the forced air heater to turn on the forced air heater when the temperature is below the predetermined threshold; or a thermostat providing mechanical switching to connect the mains power interface to the forced air heater when the temperature is below the predetermined threshold.

3. The system according to claim 1 , further comprising

a battery coupled to the heater to provide power for the heater in the event of a failure of the mains power interface and the temperature turns on the forced air heater.

4. The system according to claim 1, wherein

the mains power interface is either inserted into an opening within the shell or attached to the shell; and

the mains power interface incorporates at least one light to indicate a status of the and at least one of a wired communications interface and a wireless communications interface for transmitting data relating to the status of the forced air heater to a remote user via a global communications network.

5. The system according to claim 1 , wherein

the mains power interface is either inserted into an opening within the shell or attached to the shell;

the mains power interface incorporates at least one light to indicate a status of the and at least one of a wired communications interface and a wireless communications interface for transmitting data relating to the status of the heater to a remote user via a global communications network; and

the mains power interface supports coupling to a first mains power source for powering the heater and a second mains power source for powering a spa pack for the spa system comprising at least a controller, a pump and a water heater.

6. The system according to claim 1, further comprising

a backup electricity system for replacing electricity provided by the mains power interface upon a failure of the mains power interface to provide electrical power.

7. The system according to claim 1 , wherein

the heater is at least one of the following heaters, namely a forced air heater, an electrical element heater, a wound tape electrical heater, a heat lamp, and an infrared heat lamp.

8. A device comprising:

an outer case for mounting the device to a shell of a spa system comprising the shell and a spa tub supported by the shell;

a first mains power interface for coupling to a first mains power source to provide power to a heater coupled to cavity disposed between the shell and the spa tub;

a second mains power interface for coupling to a second mains power source to provide power to a spa pack for the spa system to provide normal operation of the spa system; and

at least one of:

a visual indication means to display to a user at least one a status of the second mains power interface and a status of the forced air heater; and

an interface supporting communications to a communications network for sending messages relating to at least one a status of the second mains power interface

and a status of the forced air heater to a remote user upon an electronic device also connected to the communications network.

9. The device according to claim 8, wherein

the interface communicates to the communications network via a local router; and the communications from the interface to the local router are at least one of by a wired means, a wireless means, and an optical means.

10. The device according to claim 09, wherein

the first mains power interface comprises a first electrical interface on a side of the device exterior to the shell of the spa system and a second electrical interface on another side of the device.

1 1. The device according to claim 8, wherein

the second mains power interface comprises a first electrical interface on a side of the device exterior to the shell of the spa system and a second electrical interface on another side of the device.

12. The device according to claim 8, further comprising

a third mains power interface for coupling to a third mains power source to provide power for the heater in the event of a failure of at least one of the first mains power source and thje second mains power source.

13. A method comprising:

providing a means of heating a cavity disposed between a spa tub of a spa system and a shell of the spa system supporting the spa tub; and

providing a means of powering the means of heating when a monitored temperature of at least one of the air within cavity between the shell of spa system and the bottom of the spa tub and the water within the spa system has dropped below a predetermined threshold temperature.

14. A system for freeze protection of a spa system having a spa tub and a shell supporting the spa tub comprising:

a mains power interface;

a heater coupled to the mains power interface disposed to heat at least one of a predetermined portion of the spa tub and a pipe forming part of a circulatory circuit for the spa system that allows water to flow into and out of the spa tub; and

a thermostat for turning on the heater when the thermostat establishes that the temperature of at least one of water within the circulatory circuit and the pipe forming part of a- circulatory circuit is below a predetermined threshold.

15. A system for freeze protection freeze protection of a spa system having a spa tub and a shell supporting the spa tub comprising:

a mains power interface coupled to a controller;

a heater coupled to the mains power interface and the controller disposed to heat a predetermined portion of the spa system independent of the normal spa fluidic circuit; a temperature sensor disposed at a predetermined position within the spa system;

a drain forming part of the spa system; wherein

the controller when the temperature monitored by the temperature sensor is below a first predetermined threshold enables the heater independent of a state of the normal spa fluidic circuit.

16. The system according to claim 15, wherein

the controller when the temperature monitored by the temperature sensor drops below a second predetermined threshold enables the drain independent of a state of the normal spa fluidic circuit and the heater.

17. The system according to claim 15, wherein

the drain when the temperature drops below a second predetermined threshold automatically opens independent of any state of the other aspect of the system and the spa system.

18. A system for freeze protection freeze protection of a spa system having a spa tub and a shell supporting the spa tub comprising:

a mains power interface coupled to a controller;

a heater coupled to the mains power interface and the controller disposed to heat a predetermined portion of the spa system independent of the normal spa fluidic circuit; a temperature sensor disposed at a predetermined position within the spa system;

the controller when the temperature monitored by the temperature sensor is below a first predetermined threshold enables the heater and disables the normal spa fluidic circuit.