A method of sanitizing pipes, etc. in a hot water supply system includes the steps of normally heating water by driving water from a water storage tank, into a heat exchanger. Typically, a water pump is stopped once the water storage tank receives a particular percentage of hot water. However, when
A method of sanitizing pipes, etc. in a hot water supply system includes the steps of normally heating water by driving water from a water storage tank, into a heat exchanger. Typically, a water pump is stopped once the water storage tank receives a particular percentage of hot water. However, when a sanitation mode is desired, the pump is not stopped, such that the water tank becomes all, or almost all, hot water. The hot water is then delivered to the pump, and from the pump to the heat exchanger. This hot water is thus operable to sanitize pipes and the pump.
대표청구항▼
1. A method of operating a hot water supply system comprising the steps of: (1) providing a hot water supply system including a water storage tank, and a pump for delivering water from said water storage tank to a heat exchanger;(2) operating said pump under normal conditions to draw a cool water fr
1. A method of operating a hot water supply system comprising the steps of: (1) providing a hot water supply system including a water storage tank, and a pump for delivering water from said water storage tank to a heat exchanger;(2) operating said pump under normal conditions to draw a cool water from said water storage tank, and pass it through pipes communicating said water storage tank to said pump and to said heat exchanger, and monitoring an amount of cool water in said water storage tank relative to an amount of hotter water, and normally stopping operation of said pump passing cool water to said heat exchanger when the amount of hotter water relative to cool water reaches a predetermined amount; and(3) operating said system in a sanitation mode at which hotter temperature water is brought through said pipes and said pump, and in said sanitation mode, said pump not stopping operation when the amount of hotter water relative to cool water exceeds the predetermined amount, but continuing to pass water from said water storage tank through said heat exchanger such that a higher temperature water is brought through said pipes and said pump. 2. The method as set forth in claim 1, further comprising the steps of delivering hot water from said heat exchanger into said water storage tank. 3. The method as set forth in claim 2, wherein a switch operates when said pump is operating under step (2) to stop operation of said pump once a predetermined amount of hot water is received in said water storage tank. 4. The method as set forth in claim 3, wherein said switch is overridden in said sanitation mode such that hot water reaches a higher percentage within said water storage tank, and said hot water is delivered into said pipes, to said pump, and to said heat exchanger to sanitize said pipes and said pump. 5. The method as set forth in claim 1, wherein said heat exchanger further receives a hot refrigerant to heat said water. 6. The method as set forth in claim 1, wherein a user of the hot water system normally requests a particular temperature, and when the pump is in sanitation mode, if the particular requested temperature is not above a predetermined minimum sanitation temperature, the requested temperature for the water is set to a predetermined minimum sanitation temperature for step (3). 7. A hot water supply system comprising: a water storage tank;a pump for delivering water from said water storage tank to a heat exchanger;at least one pipe for connecting said water storage tank to said heat exchanger;a control for operating the system in a sanitation mode at which hotter temperature water is brought through said pipes and said pump;and said control monitoring an amount of cool water in said water storage tank relative to an amount of hotter water, and said control normally stopping operation of said pump passing cool water to said heat exchanger when the amount of hotter water relative to cool water reaches a predetermined amount; andin said sanitation mode, said control not stopping operation even when the amount of hotter water relative to cool water exceeds the predetermined amount, but continuing to pass water from said water storage tank through said heat exchanger such that a higher temperature water is brought through said pipes and said pump. 8. The hot water supply system of claim 7, wherein hot water from said heat exchanger is delivered into said water storage tank. 9. The hot water supply system of claim 8, wherein a switch operates to stop operation of said pump once a predetermined amount of hot water is received in said water storage tank. 10. The hot water supply system of claim 9, wherein said switch is overridden in said sanitation mode such that hot water reaches a higher percentage within said water storage tank, and said hot water is delivered into said at least one pipe, to said pump, and to said heat exchanger to sanitize said at least one pipe and said pump. 11. The hot water supply system of claim 7, wherein said heat exchanger further receives a hot refrigerant to heat said water. 12. The hot water supply system of claim 7, wherein a user of the hot water system normally requests a particular temperature, and when the pump is in sanitation mode, if the particular requested temperature is not above a predetermined minimum sanitation temperature, the requested temperature for the water is set to a predetermined minimum sanitation temperature. 13. The hot water supply system of claim 7, wherein said heat exchanger is part of a refrigerant cycle, and said heat exchanger being combined in said refrigerant cycle with an expansion device, a compressor, and a second heat exchanger.
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