Embodiments of the invention provide a pool heater including a housing, a first tankless heater, a second tankless heater, and a controller. The controller is configured to activate only the first tankless heater when a first condition is met, activate only the second tankless heater when a second c
Embodiments of the invention provide a pool heater including a housing, a first tankless heater, a second tankless heater, and a controller. The controller is configured to activate only the first tankless heater when a first condition is met, activate only the second tankless heater when a second condition is met, and activate the first and the second tankless heaters simultaneously when a third condition is met.
대표청구항▼
1. A heater, comprising: a housing; a first tankless heater;a second tankless heater; anda controller configured to activate only the first tankless heater when a first condition is met, activate only the second tankless heater when a second condition is met, and activate the first and the second ta
1. A heater, comprising: a housing; a first tankless heater;a second tankless heater; anda controller configured to activate only the first tankless heater when a first condition is met, activate only the second tankless heater when a second condition is met, and activate the first and the second tankless heaters simultaneously when a third condition is met. 2. The heater of claim 1, wherein the first tankless heater is mounted to the housing and the second tankless heater is mounted within the housing. 3. The heater of claim 1, wherein both the first tankless heater and the second tankless heater are mounted within the housing. 4. The heater of claim 1, wherein the first tankless heater is an electric heat pump and the second tankless heater is a gas fired heat exchanger. 5. The heater of claim 1, wherein the controller monitors a temperature of an environment surrounding the heater. 6. The heater of claim 1, wherein the controller monitors a temperature of water entering an inlet of the heater. 7. The heater of claim 6, wherein the first condition is met when the temperature is less than a first temperature, the second condition is met when the temperature is less than a second temperature, and the third condition is met when the temperature is less than a third temperature. 8. The heater of claim 7, wherein each of the first, second, and third temperatures is different. 9. The heater of claim 1, further including first and second valves that provide at least a minimum flow of water to the first and second tankless heaters, respectively. 10. The heater of claim 9, wherein the first and second valves are spring-loaded check valves. 11. The heater of claim 9, wherein the first and second valves are three-way valves. 12. The heater of claim 1, further including a single inlet entering the housing and in communication with both the first and second tankless heaters and a single outlet exiting the housing and in communication with both the first and second tankless heaters. 13. A method of heating water for an aquatic system utilizing a heater system comprising a first tankless heater and a second tankless heater, the method comprising the steps of: determining a first temperature of water entering the heater system; and if the first temperature is less than a first predetermined temperature, operating both the first and second tankless heaters to increase the first temperature; orif the first temperature is less than a second predetermined temperature and greater than the first predetermined temperature, operating only the first tankless heater to increase the first temperature. 14. The method of claim 13, further including the step of: deactivating both the first and second tankless heaters if the first temperature is not less than either the first or second predetermined temperatures. 15. The method of claim 13, further including the step of: entering a bypass mode in which water bypasses both the first and second tankless heaters if the first temperature is not less than either the first or second predetermined temperatures. 16. The method of claim 13, further including the steps of: if the first temperature is less than the first predetermined temperature and both the first and second tankless heaters are operating, determining a second temperature of water heated by the first and second tankless heaters;continuing operation of the first and second tankless heaters if the second temperatures is less than the second predetermined temperature; andrepeating the determining and operating steps until the second temperature is not less than the second predetermined temperature. 17. The method of claim 13, further comprising the steps of: if the first temperature is less than the second predetermined temperature and only the first tankless heater is operating, determining a third temperature of water heated by the first tankless heater;comparing the third temperature to a third predetermined temperature, which is less than the second predetermined temperature, and if the third temperature is less than the third predetermined temperature, determining whether a time the first tankless heater has been operated is greater than a first predetermined time period, andif the time is greater than or equal to the first predetermined time period, simultaneously operating both the first and second tankless heaters, orif the time is less than the first predetermined time period, continuing operation of only the first tankless heater if the third temperature is less than the second predetermined temperature. 18. The method of claim 17, wherein after the comparing step: if the third temperature is not less than the third predetermined temperature and the third temperature is less than the second predetermined temperature, undertaking the steps of: continuing operation of only the first tankless heater; andrepeating the determining and comparing steps until the third temperature is not less than the second or third predetermined temperatures. 19. The method of claim 18, further including the step of: entering a bypass mode in which water bypasses both the first and second tankless heaters if the third temperature is not less than the second or third predetermined temperatures. 20. The method of claim 17, wherein the first and third predetermined temperatures are less than the second predetermined temperature.
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