HOT WATER SERVICE MONITORING

摘要

Some embodiments of a system (100) configured to provide water service to one or more water use fixtures (102) include a cold water supply (104), a water heater (106), a mixing valve (108), and one or more water use fixtures (102). The water heater includes a tank (116) containing a supply of water, a first temperature sensor (120) configured to output a first temperature signal (124) indicative of a water temperature of the water in the tank, a heating device (118) configured to heat the water in the tank, and a water heater controller (122) configured to control the water heater based on the first temperature signal and an operating temperature setting (126). The mixing valve is configured to receive a hot water flow (128) from the tank of the water heater and a cold water flow (113) from the cold water supply, and output a mixed water flow (134), which is a combination of the hot water flow and the cold water flow. The one or more water use fixtures are configured to receive the mixed water flow. In some embodiments, the system includes a second temperature sensor (146 or 150) configured to output a second temperature signal (148 or 152) indicative of a water flow temperature of the mixed water flow or the hot water flow, and a system controller configured to deactivate the water heater when the second temperature signal indicates that the water flow temperature exceeds a discharge temperature range. [0046] Other embodiments are directed to a method of controlling water service to one or more water use fixtures (102) by a water system (100) comprising a water heater (106) configured to output a hot water flow (128) from a tank (116), and a mixing valve (108) configured to output a mixed water flow (134), which is a combination of the hot water flow and a cold water flow (113). In some embodiments of the method, a first temperature signal indicative of a temperature of the mixed water flow or the hot water flow is generated (160) using a first temperature sensor (146 or 150). The temperature indicated by the first temperature signal is determined (162) to exceed a discharge temperature range (144) using a system controller (140). A heating device (118) of the water heater is deactivated (164) using the system controller. The temperature of the hot water flow is reduced responsive to deactivating the heating device.