A heat source system is to be connected to another heat source system. The heat source system includes a heat source device and a control part. The heat source device includes a water regulation valve configured to regulate a flow rate of supply water flowing in the device and is configured to heat the supply water. The control part is connected to the heat source device, and is configured to acquire flow rate information of the supply water supplied to the other heat source system and the heat source device, to close the water regulation valve when a flow rate of the supply water is 0 or more and less than a first set value, and to open the water regulation valve when the flow rate of the supply water is equal to or greater than the first set value.

A water dispensing apparatus includes a hot water module configured to heat supplied water using an induction heating method, a water supply pipe configured to supply water to the hot water module, a flow rate control valve provided on the water supply pipe to control a flow rate of water supplied to the hot water module, a flow rate sensing device provided on the water supply pipe to sense the flow rate of water supplied to the hot water module, and a controller configured to increase an opening speed of the flow rate control valve when the flow rate of supplied water sensed through the flow rate sensing device is equal to or less than a set flow rate.

A tankless water heater, comprising: a flow channel with a cold-water inlet pipe, a heating unit with an heating element configured to heat water flowing through the heating unit and a hot-water outlet pipe, and a control unit configured to control the tankless water heater, wherein the control unit is configured to receive a power limitation signal of an external facility management system and to control a heating output of the heating element depending on the power limitation signal.

Hot water heating system comprising one or more water heaters with at least one water heating mechanism, and a heating-control storage tank generally configured to store heated water in a temperature stratified manner where hotter water tends to be separated from cold water. The heating-control storage tank can receive thermal energy or hot water from the water heater, send thermal energy or water to the water heater as its makeup water, and provide hot water directly to end users. The water heater may or may not be used to provide hot water to end users. The system is electronically controlled using a processor, various sensors, a recirculation pump, and electronically actuated valves. Depending on hot water needs and energy costs, the system controls water heating schedule and amount of hot water stored in the heating-control storage tank by changing system operation modes to minimize energy costs while providing reliable service.

A water heater system includes a water heater having a first water outlet and a second water outlet. The water heater system further includes a flow detection device coupled to the first water outlet to detect a water flow through the first water outlet. The water heater system also includes a flow control valve fluidly coupled to the second water outlet. The flow control valve is configured to control a flow of water through the second water outlet based on whether the water flow through the first water outlet is detected by the flow detection device.

High intensity combustion and low intensity combustion are carried out together, to stabilize flames and to hold down the emission of carbon monoxide. An air-fuel mixture outlet member (back plate) that includes a single or a plurality of outlet(s) (air-fuel mixture outlet(s)) out of which an air-fuel mixture (GA) flows is include, and a metal fiber knitting body (metal knit) that covers the air-fuel mixture outlet member is included. Therefor, the air-fuel mixture, which is made to flow out of the outlet(s), passes through the metal fiber knitting body (metal knit) and is combusted, a flame of low intensity (flame) is generated together with a flame of high intensity (flame) by combustion of the air-fuel mixture, and the flame of low intensity holds the flame of high intensity.

A flow sensor of a domestic appliance has an axle that is substantially perpendicular in the installed state to the flow direction of a fluid channel of the domestic appliance. The bearing component is designed as a single part and has at least two interconnected limbs, each limb having an axle mount for one end of the axle of the flow sensor, wherein the two axle mounts are mutually spaced apart in such a way that they correspond in a relaxed condition of the bearing component to an extension of the axle of the flow sensor. The two limbs are designed to be elastic such that the spacing between the axle mounts can be increased in order to insert the flow sensor between the axle mounts.

An air-conditioning apparatus includes: a heat-source-side device that heats or cools a heat medium; a pump that sucks and transfers the heat medium; use-side heat exchangers; a heat medium circuit; flow rate control devices; indoor-side pressure sensors; a pump inlet-side pressure sensor and/or a pump outlet-side pressure sensor; a flow rate detection device that detects a pump flow rate; and a controller that performs a first operation in which the flow rate control devices are individually opened or closed and data regarding a flow passage resistance at a path related to each of the heat exchangers is obtained, and a second operation in which heat is supplied to indoor air, and calculates calculate flow rates of the heat medium that flows through the heat exchangers in the second operation, from pump flow rates and pressures detected by the pressure sensors in the first and second operations.

Dispensing of hot water having an adjustable temperature by way of a water outlet fitting that can be installed on a sink. This is achieved by a continuous flow heater and a measured value sensor arranged in a water inlet of the water outlet fitting as the hot water heater. The measured value sensor detects a measurement variable with regard to water flowing through the continuous flow heater (10). The water dispensing device has a control unit, which is designed to regulate a flow rate through the continuous flow heater as a function of measured values of the measured value sensor in order to adjust the temperature of the hot water.

A water heater monitoring and notification method includes determining that an intake pressure switch of a combustion system of a water heater or an exhaust pressure switch of the combustion system of the water heater is open and shutting down a blower of the combustion system in response to the intake pressure switch or the exhaust pressure switch being open.