JP2014508271A - Hot water appliances - Google Patents

Abstract

  The present invention includes a heating member for heating water and a control unit for controlling the heating member, the control unit including a memory for storing a desired temperature of a space to be warmed, and an input / output unit, The input / output unit is adapted to receive a signal representative of the measured temperature, and the control unit relates to a hot water appliance that controls the heating member based on the desired temperature and the measured temperature.

Description

  The present invention relates to a hot water apparatus.

  A conventional system for central heating (CH) of a building includes a central boiler in which a burner burns gas. Heat generated during combustion is converted to water using a heat exchanger. Boiler pumps send heated water through the building pipe system to the radiator, which transfers the heat of the water, mainly by radiation and convection, to the room in which the radiator is located. Via the return conduit, the cooled water reaches the boiler again, where it is heated.

  The boiler is controlled by a thermostat. The thermostat is placed in one of the rooms to be warmed. The thermostat includes a temperature sensor and an actuating member for setting a desired temperature. The thermostat is essentially a bimetal switch or mercury switch and sends an on / off signal to the boiler. Electronic components that depend on temperature are used today as temperature sensors. Rather than generating an on / off signal, current thermostats can send a modulated signal to the boiler to indicate variable heat demand. Current thermostats are also equipped with a clock, which allows the thermostat to follow a time-dependent program. For traditional reasons, these thermostats still communicate with the boiler via a two-wire connection. This is not a problem that cannot be overcome, but imposes some limitations. For compatibility reasons, the thermostat must have its own power source (generally a battery), and in addition to the heat demand, sending additional information over a two-wire connection incurs overhead.

  US 2010/045470 A1 describes a steam distribution system for warming buildings of different residences. The system is based on a remotely controlled steam valve located in the residential radiator. The operation is based on a temperature measured at the residence and a set temperature that can be optionally entered via a thermostat at the residence. There is a central control system that remotely controls the steam boiler switch on and off in addition to controlling the steam valve. This central control communicates wirelessly with valves and steam boilers via a local network.

  DE 102 29 222 A1 generally describes a central control system, which operates all the technical equipment of the building based on measurements by sensors in order to minimize energy consumption. It is not described how the hot water appliances in this system are controlled.

  Central control of technical equipment in a residence or other building is also described in WO 01/13577 A2. The control uses a network in the building. There are few specific details about heating and hot water supply. However, there is a central thermostat that communicates with the hot water appliance over the network.

  The object of the present invention is to go to the next step in the development of a heating boiler and provide a new functional range.

  This object is achieved by providing a hot water appliance, the hot water appliance comprising a heating member for heating water and a control part for controlling the heating member, wherein the control part is a desired space to be heated. A memory for storing the temperature of the controller and an input / output unit connected to the control unit, the input / output unit adapted to receive a signal representative of the measured temperature, wherein the control unit is adapted to the desired temperature and the measured temperature. The heating member is controlled based on this. The present invention is based on the consideration that in terms of the control unit, ie control engineering, the controller does not belong to the location of the temperature sensor but belongs to the location of the boiler. This has been developed in this manner from the old days. This is because the temperature sensor and controller were a single physical component in a conventional thermostat. The introduction of an electronic temperature sensor, such as a temperature dependent resistor, has resulted in a thermostat with separate components for detecting temperature and for defining control action. Due to the nature of the CH equipment, that is, the concentration of heat, heat is distributed to different indoor places where there is a demand for heat, but it is also logical that the demand for heat is judged on the boiler side. Compared to conventional CH equipment, the controller must be transferred from the thermostat to the CH boiler. Here, conventional thermostats are relegated to the classification of temperature sensors and actuators. The “thermostat” determines the deviation based on the measured temperature and the set temperature and sends it to the boiler. On the boiler side, the control unit determines a control action corresponding to the deviation in order to drive the heating member. (In many cases, the heating element is controlled by controlling the rotational speed of a fan that draws air for the gas to burn in the burner).

  However, beyond the process of simply physically moving the controller (control), a greater range of options is provided. This further step is to determine the deviation of the control (in the boiler). Here, a conventional thermostat is driven by a simple temperature sensor. Advantages will be described based on the following embodiments.

Although it is not strictly necessary to incorporate the control within the housing of the hot water appliance, it is encouraged.
The space to be heated is not necessarily limited to one room. Traditionally, there is only one thermostat in the residence, the temperature is measured only in one room and only one desired temperature can be set. Even in such a case, the CH facility warms more than one room. In most cases, the temperature of the room in which the thermostat is located will be closest to the desired temperature being set, but the same thermostat is used to "control" the temperature of the other rooms. Similarly, the term “space” in the present invention should not be understood as being limited to a single room. A space may include more than one room. In many cases, the space can include only a portion of a room. For example, in the case of a long hallway with high heat loss, the two ends of the hallway are warmed by each radiator with its own control circuit.

  The measured temperature is not necessarily the room temperature. In so-called weather-dependent temperature control, an outdoor thermometer and a feedforward controller are used. The feed-forward controller performs control operations based on outdoor temperatures, known (predicted) effects of interfering (outside temperature) and known (predicted) effects of control action (heating member operation). Determine.

  In a further embodiment, a hot water appliance is provided, the input / output unit is adapted to receive an operation command from at least one actuator connected to the input / output unit, and the control unit is configured to heat the heating member based on the received operation command. Adapted to control. Operation commands by the user based on the device being controlled can thus be generated remotely from the hot water appliance.

  In a further embodiment of the hot water appliance according to the invention, the control unit can be adapted to store the received operating instructions in the memory. Thus, a program of a desired temperature for a predetermined period can be stored.

  In order to prevent the hot water device from being switched off in an unexpected situation where the connection between the input / output unit and the actuating device has been lost, a predetermined desired temperature or a predetermined value for the desired temperature is determined. The stored program is stored in the memory and the controller is adapted to control the heating member based on its preset temperature or a predetermined program when no operating command is received or stored. The control unit has a configurable control algorithm, and the hot water appliance can function independently based on the stored standard settings (default), but the control configuration is changed by the actuator that communicates with the input / output unit can do.

  In certain embodiments, the input / output section includes a two-contact inlet / outlet for two-wire communication with an actuator having an integrated temperature sensor. The input / output unit is adapted to send and receive messages via a two-contact inlet / outlet, which follows a protocol suitable for multiplexing two-way communication with two-wire connections and messages from actuators and temperature sensors. In an alternative specific embodiment, the input / output unit is adapted so that two physically separate unidirectional connections are used. In a further alternative specific embodiment, the input / output is adapted so that two physically separate connections are used for the temperature sensor and the actuator. In another alternative specific embodiment, the input / output unit is adapted to use three physically separate one-way connections, one for inputting a message from the temperature sensor and one for the actuator. One is to input an empty message and one is to output a message from the actuator.

  In a further embodiment, a hot water appliance is provided and the input / output unit further includes a network coupling unit for exchanging data over the network. By incorporating a network coupling unit into the input / output unit, components such as temperature sensors or actuators can be coupled to the control unit via a network connection, such as an existing home LAN or office LAN. The LAN is preferably based on TCP, UDP and IP protocols over Ethernet.

  In a further embodiment, the present invention further comprises a web server for providing a hot water appliance and making a user interface available via a network coupling for operating the hot water appliance. In yet another embodiment, the present invention provides a hot water device, and a user interface made available by a web server is accessible via a network coupling. In yet another embodiment, the present invention provides a hot water apparatus and the user interface is adapted to allow a user to perform at least one of the following actions: enter a desired temperature; for a desired temperature Enter the program; see the measured temperature; see the status information about the hot water appliance; see the maintenance information; see the error message; see the performance data; and adjust the hot water appliance. With the introduced web server, it is possible to navigate to the web server of the hot water appliance by using, for example, a browser of a smartphone. The user is presented with a user interface with which the user can activate or program the hot water appliance or view information. Thus, for example, enter or change a program for temperature fluctuations during a day or week, enter or change the desired temperature for the space, see the temperature measured by a connected temperature sensor, holiday Can read status information or maintenance information that sets or starts the program.

  A trivial aspect that allows operation over a network from conventional equipment is to provide a conventional thermostat (with integrated temperature sensor, operating means and controller) with a web server integrated with a network interface. .

  In a further embodiment according to the present invention, a hot water appliance is provided and the input / output unit includes a wireless communication device. In certain embodiments, the communication device uses any WiFi protocol. The communication device can act as a WiFi access point. Alternatively, the communication device is a WiFi client that connects to an existing WiFi access point. In this configuration, the hot water appliance is part of the LAN with which the WiFi access point is associated, and the temperature sensor and actuator can be connected to the hot water appliance via the existing LAN. In another alternative embodiment, WiFi ad hoc or direct WiFi is used to connect the temperature sensor and actuator.

  In yet another embodiment, the present invention provides a hot water appliance and the actuating device can be connected to the control unit via a wireless communication device. The operating device is not limited to a special dedicated operating device, and a mobile phone in which a dedicated application is installed, a mobile phone that contacts a web server incorporated in the hot water appliance via the web browser as described above, and a web browser A personal computer that contacts the web server via is also envisaged.

  The present invention provides a further hot water appliance, wherein the memory is adapted to store a desired temperature of the two or more spaces to be warmed, and the controller is configured to set the desired temperature and the measured temperature of the two or more spaces to be warmed. Based on, adapted to control the heating element. In the present embodiment, the control unit has two or more target temperatures (desired temperatures), one measured temperature, and one measured value. One measured temperature can be the temperature of any space where the desired temperature is sought, but the measured temperature can be a different temperature, for example outdoor temperature in the case of weather-dependent temperature control. Furthermore, there are two or more target temperatures here. If the hot water appliance has a plurality of independent hot water channels and each desired temperature substantially corresponds to an individual hot water channel, it is relative to control each hot water channel separately to achieve a different desired temperature. Easily. Otherwise, the controller must make some compromise, for example by allowing tolerances at the desired temperature, or by using the desired temperature range instead of the desired temperature. Alternatively, weighting can be used to indicate a priority between the desired temperatures. If there is more desired temperature than the measured temperature, the controller has entered the desired temperature, but the actual temperature of the space where the measured temperature is not actually available can be used with some reliability. It needs to be estimated.

  In yet another embodiment, the present invention provides a hot water appliance, wherein the input / output unit is adapted to receive two or more signals each representing a measured temperature, and the control unit is a desired temperature of the space to be warmed. Or adapted to control the heating element based on the desired temperature of the two or more spaces to be warmed as well as the two or more measured temperatures. In a specific embodiment, the temperature signal is provided to the input / output unit via a wired connection. In certain alternative embodiments, the temperature signal is provided wirelessly to the input / output unit. In yet another specific embodiment, the temperature signal is provided via both wired and wireless connections.

  In a further embodiment, a hot water appliance is provided, and the controller determines a deviation between the desired temperature in the space to be warmed or two or more spaces to be warmed and the measured temperature, and controls the heating member. Is given a weight to the deviation. This is particularly encouraged when there are more spaces with corresponding desired temperatures than the number of independent hot water channels. Weighting can give priority to a specific desired temperature. This is because the temperatures actually realized in the space with the corresponding temperatures are not independent of each other.

  In yet another embodiment, the present invention provides a hot water appliance and further comprises a notification member for sending a notification via a communication device. This notification can include, for example, an error message. This notification includes, for example, an email message or an SMS message.

  In one embodiment according to the present invention, a hot water appliance is provided and the apparatus comprises a CH boiler or a combination boiler.

  Further advantages and embodiments are described below with reference to the accompanying drawings.

It is a figure which shows the warm water appliance which has a thermostat according to a prior art. FIG. 2 shows an alternative hot water appliance having a thermostat according to the prior art. It is a figure which shows the warm water appliance according to this invention. It is a figure which shows other embodiment of the hot water appliance according to this invention. It is a figure which shows another embodiment of the warm water appliance according to this invention. FIG. 6 shows an alternative embodiment of a hot water appliance according to the present invention. FIG. 6 shows a further alternative embodiment of a hot water appliance according to the present invention. FIG. 6 shows yet another alternative embodiment of a hot water appliance according to the present invention. It is a figure which shows schematically the control part and heating member of the hot water appliance of FIG. It is a flowchart which shows how a hot water appliance is controlled.

  The hot water appliance 10 (FIG. 1) according to the prior art includes a water supply conduit 22. Water is circulated by the pump 24 in the hot water channel. The water is sent through the heat exchanger 26 and heated by the heat exchanger. The hot water exits the hot water appliance 10 via the water outlet 28. The water in the heat exchanger 26 is heated by the burner 30. Burner 30 includes an air / gas mixture from mixer 32 (eg, a venturi). Air is drawn by the fan 34 through the air supply 36 and is blown into the mixer 32. The gas from the gas supply 38 reaches the mixer 32 via the gas block 39.

  Fan 34 and pump 24 are controlled from an external thermostat 50 located elsewhere. The thermostat 50 is connected to the hot water device 10 via the cable 42. Cable 42 is typically a two-wire connection. The thermostat 50 includes a temperature sensor 52 that generates a signal to the controller 54. The controller 54 is further connected to the control panel 56. A desired temperature can be input via the control panel to set a program. The control panel is generally provided with a display screen on which the measured temperature is indicated. The display screen also generally shows information for facilitating entry of the desired temperature or program.

  Some prior art hot water appliances 10 are provided with dual conduits so that two hot water channels can be realized. The hot water channel 10 of FIG. 2 shows a first water supply 22a through which water is sent by a first pump 24a, after which the water flows to the water discharger 28a via the first heat exchanger 26a. Here, hot water is provided to the first hot water channel. The second hot water channel sends water to the second water supply 22b. The water is sent by the second pump 24b and flows to the second water discharge part 28b via the second heat exchanger 26b. In this way, two separate hot water channels are realized. In other aspects, it may be advantageous to integrate the first heat exchanger 26a and the second heat exchanger 26b into one heat exchanger.

  In both the hot water device 10 of FIG. 1 and the hot water device 10 of FIG. 2, the temperature controller is in the thermostat 50. The controller determines a deviation between the temperature measured by the temperature sensor 52 and the desired temperature input via the control panel 56. Based on this deviation, the presence of heat demand is indicated via the cable 42, and in the case of a modulated signal, it is also shown how much the heat demand is.

  Hot water appliance 100 (FIG. 3) according to the present invention generally corresponds to prior art hot water appliance 10. Water is provided by a water supply 122 and circulated by a pump 124. Water is sent to the drainage part 128 via the heat exchanger 126. The water in the heat exchanger 126 is heated by the burner 130. The burner burns the air / gas mixture. Air is drawn by the fan 134 through the air supply 136 and blown out to the mixer 132. Gas travels from gas supply 138 through gas block 139 to mixer 132 where it is mixed with air. The controller or controller 154 that controls the fan 134 and the pump 124 is not incorporated in the thermostat 50 but is incorporated in the hot water apparatus 100 itself. The controller 154 includes a memory 153 that can store a desired temperature, and an input / output unit 155 (FIG. 9). The housing 150 is connected to the input / output unit 155 of the controller 154 of the hot water appliance 100 via the cable 42. The housing 150 does not have a controller 54 and includes only a temperature sensor 152 that provides a signal representative of temperature. Further, a control panel 156 is disposed on the housing 150. This control panel 156 allows a desired temperature to be input, which is sent to the controller 154 of the hot water appliance 100 via the cable 42 and stored in the memory 153. Other operating instructions, such as switch-on and switch-off times according to a program entered by the control panel 156, can be sent to the controller 154 via the cable 42 where they are stored in the memory 153. Two signal lines are drawn on the cable 42. These are not necessarily two physically separate conductors. Depending on the embodiment, this can also be a data bus, for example.

  In an alternative embodiment (FIG. 4), two temperature sensors 152a and 152b are connected to the controller 154 of the hot water appliance. The first temperature sensor 152a is in the same housing 150a as the control panel 156a, and is connected to the hot water device 100 via the first cable 42a. The second temperature sensor 152b is in the second housing 150b, and is connected to the hot water device 100 via the second cable 42b. In certain embodiments, the first housing 150a with the first temperature sensor 152a is in a room that is to be warmed and the temperature must be regulated. The first temperature sensor measures the temperature of this room. The difference from the desired temperature set via control panel 156a is the deviation that must be removed by control 154. The second housing 150b having the second temperature sensor 152b is disposed outside. The second temperature sensor 152b detects the outside temperature. The controller 154 uses the signal from the first temperature sensor 152a to remove the deviation detected at the indoor temperature by feedback, and the controller 154 uses the signal from the second temperature sensor 152b to feed-forward coupling. To respond positively to outside temperature changes. In another embodiment, the second temperature sensor 152b is disposed indoors, for example, but is disposed in a room different from the temperature sensor 152a. In that case, another control algorithm is likely to be required.

  In another embodiment (FIG. 5), the hot water appliance 100 is adapted to provide hot water to two hot water channels. The hot water appliance 10 includes a first water supply 122a. From the first water supply 122a, water is sent by the first pump 124a to the first drainage 128a via the first heat exchanger 126a. This part forms part of the first hot water channel. From the second water supply 122b, water is sent to the second drainage 128b by the second pump 124b via the second heat exchanger 126b. This part forms part of the second hot water channel. In other aspects, it may be advantageous to integrate the first heat exchanger 126a and the second heat exchanger 126b into a single heat exchanger having two separate water supplies.

  In the present embodiment, the two temperature sensors 152a and 152b are connected to the hot water appliance as in the conventional example. The first temperature sensor 152b is received in the first space that is heated using the first hot water channel. The second temperature sensor 152b is received in the second space that is heated using the second hot water channel. The controller 154 has two separate control circuits. The first control circuit uses the temperature measured by the first temperature sensor 152a and compares it with the first desired temperature set for the first space. Based on the deviation, the control circuit controls the pump 124a (and fan 134) in the first hot water channel. The second control circuit uses the temperature measured by the second temperature sensor 152b. This temperature is compared with a second desired temperature set for the second space. Second pump 124b (and of course fan 134) in the second hot water channel is controlled based on the measured temperature and the desired temperature.

  In a further embodiment (FIG. 6), the communication between the second temperature sensor 152b and the hot water appliance 100 takes place wirelessly, for example via a direct WiFi connection. The second housing 150b is provided with a WiFi network transmitter / receiver 158b for this purpose. The hot water appliance 100 is provided with a WiFi network transmitter / receiver 168. There is no need to pull a separate cable here.

  In yet another embodiment (FIG. 7), a control panel 156a is provided in the first housing 150a. The control panel is connected to a WiFi network transmitter / receiver that is similarly arranged in the first housing 150a. Via the WiFi network transmitter / receiver, the control panel communicates with the WiFi network transmitter / receiver 168 of the hot water appliance 100. The message sent from the control panel 156a to the hot water appliance 100 mainly includes information on which key has been pressed. The message in the opposite direction mainly includes information shown on the screen accompanying the control panel 156a. In one embodiment, the control panel 156a is part of a dedicated actuator (wireless remote control). In an alternative embodiment, the housing 150a is a mobile phone housing that allows a dedicated application to run to communicate with the hot water appliance 100 via a direct WiFi connection.

  In yet another embodiment (FIG. 8), the hot water apparatus 100 is provided with a web server 169. This web server has a (wireless or wired) connection to the home network 210, for example via a network card. The mobile phone or tablet computer 150a (having a keyboard and screen 156a) is provided with a WiFi network chip and communicates wirelessly with the home network 210. The address of the web server 169 can be accessed by a mobile phone or the internet browser of the tablet 150a. The web server provides a user interface for operating the hot water appliance 100 to the user of the mobile phone or tablet 150a. The user sees the status information of the hot water device 100, eg, changes the desired temperature, changes the program, sees the measured temperature (by the temperature sensor 152b), sees temperature fluctuations during the day (eg, The heating time per day) and error messages can be seen. If the home network 210 allows connection from the Internet, a technician can check the web server 169 via the Internet using his / her personal computer to correct a malfunction or perform an online combustion check. .

  In yet another embodiment (FIG. 9), the web server with the user interface is an external server, and the control unit 154 communicates with the web server via the Internet 210. The controller 154 only needs an IP address so that it can be accessed via the Internet. The functions introduced in the hot water appliance 100 are here limited to the actual control of the pump 124 and the fan 134. By providing a user interface on the external web server, the operation can be changed in a simple manner without being performed for that purpose in the hot water appliance 100. Thus, the user interface can be improved and added as new technical options become available. The controller 154 of the hot water appliance 100 requires minimal hardware and software that can perform the most basic functions, even if the connection to the outside world is lost, and is always re-started whenever the user interface is changed. Can be configured.

  In the present embodiment, the control unit 154 has two operation modes. In the first mode, the control is based on an operation command input via the user interface and sent to the input / output unit 155 via the Internet. In the second mode, the control is stored in the memory 153. This is based on the desired temperature. This can be a predetermined program for one temperature, or temperature at a defined time during a day. The first mode is a normal operation mode, while the second mode is an exception mode. In the latter mode, the operation of the hot water device 100 continues in an unexpected situation where the operating device 154 has not received any operation command, for example, when the network to which the input / output unit 155 is connected fails. There is only to ensure that. In either mode, the actual measured temperature obtained from the temperature sensor 152 is a reference. In order to be able to realize both modes of operation, the actual control part 157 of the control unit 154 contains two operation programs, which are schematically shown below: incoming via the input / output unit 155 A wide range of regular operating programs 162 that are executed based on operating instructions to be executed, and a more limited emergency program 161 that is executed based on information stored in the memory 153.

  FIG. 10 schematically shows how the controller 154 switches between the two operating modes. When a control cycle is started at block 201, a check is made at block 202 as to whether the input / output unit 155 receives a signal that may include an operation command.

In this case, these instructions are read at block 203 and the desired temperature value T _gew is _derived from the information. The measured temperature T is later read in block 205. This measured temperature is compared to the desired temperature T _{gew at} block 206. If it is determined from this comparison that the desired temperature has been reached, the controller need not perform further control operations and the program returns to block 202 to check for an input signal. Conversely, if a control action is required due to the temperature comparison at block 206, control signals for pump 124 and fan 134 are generated at block 207. The program then returns to block 202.

If it is determined at block 202 that the input / output unit 155 is not receiving (or has not received) an operational command, it is switched to an emergency program. The desired value of temperature T _gew stored in memory 153 is then read at block 204. The program then continues reading the measured temperature at block 205. All subsequent programming steps are the same as the steps in which the input signal is detected.

  In this way, optimal use of the potential of the Internet and other external sources to make a wide range of options available without requiring extensive facilities for advanced user-friendly operation in hot water appliances Can do. Furthermore, the operational reliability of the hot water apparatus in such a manner can always be ensured even if the communication means fails.

  The described embodiments and the embodiments shown in the drawings are only exemplary embodiments illustrating the present invention. The present invention is not limited to these embodiments. It will be apparent to those skilled in the art that many changes and modifications to the embodiments described above are possible within the scope of the present invention. Instead of storing the desired temperature in the memory of the control unit, a table with other control parameters, for example switch on / off times, can also be stored. In this case, the input / output unit receives a time signal instead of a temperature signal. Furthermore, new embodiments may be formed by easily combining features of different embodiments without departing from the invention. Accordingly, the illustrated embodiment does not limit the scope of the rights. The scope of rights is defined only by the claims.

Claims (16)

A hot water appliance,
A heating member for heating water;
A control unit for controlling the heating member, the control unit includes a memory for storing a desired temperature of a space to be warmed, and an input / output unit connected to the control unit,
The hot water appliance, wherein the input / output unit is adapted to receive a signal representative of a measured temperature, and wherein the control unit controls the heating member based on a desired temperature and the measured temperature.   The input / output unit is adapted to receive an operation command from at least one actuator connected to the input / output unit, and the control unit is adapted to control the heating member based on the received operation command. The hot water apparatus according to claim 1.   The hot water appliance of claim 2, wherein the controller is adapted to store received operational instructions in a memory.   A preset desired temperature or a preset program for the desired temperature is stored in the memory, and the control unit receives the preset temperature or the preset when no operation command is received or stored. The hot water apparatus according to claim 2 or 3, adapted to control the heating element based on a programmed program.   The hot-water apparatus according to any one of claims 1 to 4, wherein the input / output unit further includes a network coupling unit for exchanging data via a network.   6. The hot water appliance of claim 5, further comprising a web server for making a user interface available through the network coupling for the purpose of operating the hot water appliance.   The hot water appliance according to claim 6, wherein the user interface made available by the web server is accessible via the network coupling unit. The user interface is adapted to allow a user to perform at least one of the following actions:
-Enter the desired temperature,
-Enter the program for the desired temperature,
-See the measured temperature,
-See status information related to the hot water appliance,
-View maintenance information,
-See error messages,
The hot water appliance according to claim 6 or 7, wherein: the performance data is viewed; and the hot water appliance is adjusted.   The hot water apparatus according to claim 1, wherein the input / output unit includes a wireless communication device.   The hot water apparatus according to claim 9, wherein the operating device is connectable to the control unit via the wireless communication device. The memory is adapted to store desired temperatures of two or more spaces to be warmed;
The hot water appliance according to any one of claims 1 to 10, wherein the controller is adapted to control the heating member based on a desired temperature and a measured temperature of the two or more spaces to be warmed. The input / output unit is adapted to receive two or more signals each representing a measured temperature;
The controller is adapted to control the heating member based on a desired temperature of the space to be warmed or a desired temperature of the two or more spaces to be warmed and the two or more measured temperatures; The hot water apparatus according to any one of claims 1 to 11.   The control unit determines a deviation between a measured temperature and a desired temperature of a space to be warmed or two or more spaces to be warmed, and gives a weight to the deviation in order to control the heating member. To the hot water apparatus according to any one of 12 to 12.   The hot water apparatus according to claim 9, further comprising a notification member for sending a notification via the wireless communication device.   The hot water appliance according to any one of claims 1 to 14, further comprising a housing in which the heating member, the control unit, and the input / output unit are accommodated.   The hot water apparatus according to any one of claims 1 to 15, wherein the device includes a CH boiler or a combination boiler.

Images