Hot-water supply heater

Abstract

To provide a hot-water supply heater which can easily perform a heat radiation operation by a heat radiation terminal desired by a user.SOLUTION: A hot-water supply heater 1 which controls a plurality of low-temperature switching valves 39G that is switched between a first state where the supply of a heat medium to a plurality of terminal flow paths 38H is permitted and a second state where the supply is blocked, includes: a control device 70; a remote controller 71 which can operate a heat radiation instruction in a second heat radiation terminal 39Z; a storage part 73 which stores, as a plurality of groups of different combinations, information on whether or not to cause one or the plurality of second heat release terminals 39Z to radiate heat; and a setting part which can set any group among the plurality of groups stored in the storage part 73. The control part 70 controls a plurality of low-temperature switching valves 39G so as to allow the one or the plurality of second heat release terminals 39Z set in the setting part according to an operation of the heat radiation instruction by the remote controller 71 to perform heat radiation.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a water heater and heater.

Background Art

[0002] Patent Document 1 describes a hot water supply device. This hot water supply device includes a plurality of heaters that operate in conjunction with each other in response to an operation of a remote control, and a plurality of connection terminals connected to the heaters via communication cables. The plurality of heaters include a bathroom heater, a living room heater, and a floor heater. Among the plurality of connection terminals connected to the heaters, the connection terminal on the foremost side or the like is used as an interlocking connection terminal, and the heaters connected to the second and subsequent connection terminals are interlocked with the heater connected to the first connection terminal. As a result, since the plurality of heaters connected to the plurality of connection terminals arranged in order operate in conjunction with each other, the operation of the plurality of heating terminals can be performed at once with one remote control. This has the advantage of being easy to use because it is not necessary to operate several remote controls when operating a plurality of heating terminals.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, depending on the situation where the user uses the heater, it is assumed that the user may want to change the combination of heaters to be interlocked among the plurality of heaters. Since the above hot water supply device determines the heaters to be interlocked according to the order of connection to the connection terminals, etc., when it is desired to change the heaters to be interlocked later, it is necessary to perform complicated operations such as removing the heater connected to the connection terminal and connecting the heater to be interlocked to the connection terminal, which is not user-friendly.

[0005] One object of the present disclosure is to provide a water heater that enables a user to easily perform an operation of operating a desired heat dissipation terminal.

Means for Solving the Problems

[0006] A water heater according to one aspect of the present disclosure is configured to supply a heat medium to a plurality of heat dissipation terminals that have a plurality of terminal flow paths through which the heat medium flows and dissipate heat of the heat medium flowing through each of the terminal flow paths, and to control a plurality of switching valves that switch between a first state that permits supply of the heat medium to each of the terminal flow paths and a second state that shuts off the supply, the water heater being a water supply circuit that heats water supplied from the outside to supply hot water, a burner that burns gas, a heat exchanger configured to heat the heat medium by exhaust gas generated by the burner, and a heating circuit that supplies the heat medium heated by the heat exchanger to the terminal flow paths, a control unit that performs control in response to a heat dissipation instruction from a remote control that enables an operation to instruct heat dissipation of the heat dissipation terminal and controls the operation of the plurality of switching valves, a storage unit that stores information on whether or not one or more of the heat dissipation terminals dissipate heat as a plurality of groups with different combinations, and a setting unit that can set any one of the plurality of groups stored in the storage unit. The control unit controls the plurality of switching valves so that one or more of the heat dissipation terminals in the group set by the setting unit dissipate heat in response to the operation of the heat dissipation instruction by the remote control, and is capable of performing an operation of controlling to supply the heat medium to a plurality of the heat dissipation terminals in response to an instruction from one remote control connected to one signal connection unit, and an operation of controlling to supply the heat medium to the heat dissipation terminal corresponding to each remote control in response to each instruction from each remote control connected to each of the plurality of signal connection units. Water heater.

[0007] A water heater according to one aspect of the present disclosure is A water heater and heater that has a plurality of terminal flow paths through which a heat medium flows, supplies the heat medium to a plurality of heat radiating terminals that radiate the heat of the heat medium flowing through each of the terminal flow paths, and controls a plurality of switching valves that switch between a first state that permits supply of the heat medium to each of the terminal flow paths and a second state that shuts off the supply, A hot water supply circuit that heats water supplied from the outside to supply hot water, A burner that burns gas, a heat exchanger configured to heat the heat medium by the exhaust gas generated by the burner, and a heating circuit that supplies the heat medium heated by the heat exchanger to the terminal flow paths, A control unit that controls the operation of the plurality of switching valves, A remote controller capable of performing an operation for a hot water supply instruction in the hot water supply circuit and an operation for a heat radiation instruction in the heat radiating terminal, A storage unit that stores information on whether or not to radiate one or a plurality of the heat radiating terminals as a plurality of groups with different combinations, A setting unit capable of setting any one of the plurality of groups stored in the storage unit, The control unit controls the plurality of switching valves so that one or a plurality of the heat radiating terminals of the group set by the setting unit radiate in response to an operation of the heat radiation instruction by the remote controller, The heat radiating terminal and the control unit are connectable so as to be able to communicate via a communication cable, and the heat medium is supplied to the heat radiating terminal in which the communication cable does not intervene between the control unit and the control unit without the communication cable intervening between any of the heat radiating terminals and the control unit. The heat radiation instruction is enabled by the remote controller. Water heater and heater.

Advantages of the Invention

[0008] The technology according to the present disclosure can realize a water heater and heater that enables a user to easily perform an operation of operating a desired heat radiating terminal.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

MODE FOR CARRYING OUT THE INVENTION

[0010] Each of the following [1] to [6] is an example of a hot water heater included in the present disclosure. [1] A hot water heater that has a plurality of terminal flow paths through which a heat medium flows and supplies the heat medium to a plurality of heat dissipation terminals that dissipate the heat of the heat medium flowing through each of the terminal flow paths, and controls a plurality of switching valves that switch between a first state that permits the supply of the heat medium to each of the terminal flow paths and a second state that shuts off the supply, A hot water supply circuit that heats water supplied from the outside to supply hot water, A burner that burns gas, a heat exchanger configured to heat the heat medium by the exhaust generated by the burner, and a heating circuit that supplies the heat medium heated by the heat exchanger to the terminal flow path, A control unit that performs control according to a heat dissipation instruction from a remote control that enables an operation for instructing heat dissipation of the heat dissipation terminal, and controls the operation of the plurality of switching valves, A storage unit that stores information on whether or not to dissipate heat from one or more of the heat dissipation terminals as a plurality of groups with different combinations; A setting unit that can set any one of the plurality of groups stored in the storage unit; and The control unit controls the plurality of switching valves so that one or more of the heat dissipation terminals of the group set by the setting unit dissipate heat in response to an operation of the heat dissipation instruction by the remote controller. An operation of controlling to supply the heat medium to the plurality of heat dissipation terminals in response to an instruction from one remote controller connected to one signal connection unit, and an operation of controlling to supply the heat medium to the heat dissipation terminal corresponding to each remote controller in response to each instruction from each remote controller connected to each of the plurality of signal connection units are enabled. A water heater.

[0011] The storage unit of the hot water heater in [1] stores information on whether or not to radiate heat from one or more heat radiating terminals as multiple groups of different combinations. The setting unit can set a "group including one heat radiating terminal or a combination of multiple heat radiating terminals" selected from the multiple groups stored in the storage unit. The control unit controls the switching valve so that "one or more heat radiating terminals" of the group set in the setting unit radiate heat in response to a heat radiating instruction operation using the remote control. With this configuration, when a user wants to use heating in the group set in the setting unit, he or she only needs to operate the remote control to issue a heat radiating instruction. When such an operation is performed, the control unit causes the heat radiating terminals (one or more heat radiating terminals) of the group set in the setting unit to radiate heat. Therefore, when a group including one heat radiating terminal is set, the heat radiating terminal can be caused to radiate heat, and when a group including multiple heat radiating terminals is set, all of the heat radiating terminals can be caused to radiate heat collectively. Furthermore, the hot water heater can be set by changing the group set in the setting unit to a different group. In other words, the setting of "one or more heat dissipation terminals to be operated in response to the operation of the heat dissipation instruction" can be changed, so that if it becomes necessary to change "one or more heat dissipation terminals to be operated in response to the operation of the heat dissipation instruction" for some reason, the group set in the setting unit can be changed to a new desired group, and then the user can easily operate the heat dissipation terminals of the new desired group by operating the heat dissipation instruction with the remote control. Furthermore, not only is it possible to control the supply of heat medium to the heat dissipation terminals corresponding to each remote control in response to each instruction from each remote control connected to each of the multiple signal connection parts, but it is also possible to control the supply of heat medium to multiple heat dissipation terminals in response to an instruction from one remote control connected to one signal connection part. With this configuration, it is not necessary to prepare remote controls in the number corresponding to the heat dissipation terminals, but it is possible to operate multiple heat dissipation terminals in conjunction with each other by operating a common remote control, which further improves convenience.

[0012] 〔2〕A hot water heater that supplies a heat medium to a plurality of heat dissipation terminals having a plurality of terminal flow paths through which the heat medium flows and that dissipates the heat of the heat medium flowing through each of the terminal flow paths, and controls a plurality of switching valves that can be switched between a first state that permits the supply of the heat medium to each of the terminal flow paths and a second state that shuts off the supply, a hot water supply circuit that heats water supplied from the outside to supply hot water, a burner that burns gas, a heat exchanger configured to heat the heat medium by the exhaust generated by the burner, and a heating circuit that supplies the heat medium heated by the heat exchanger to the terminal flow paths, a control unit that controls the operation of the plurality of switching valves, a remote controller capable of performing an operation for a hot water supply instruction in the hot water supply circuit and an operation for a heat dissipation instruction in the heat dissipation terminal, a storage unit that stores information on whether or not one or more of the heat dissipation terminals dissipate heat as a plurality of groups with different combinations, a setting unit capable of setting any one of the plurality of groups stored in the storage unit, The control unit controls the plurality of switching valves so that one or more of the heat dissipation terminals in the group set by the setting unit dissipate heat in response to an operation of the heat dissipation instruction by the remote controller, The heat dissipation terminal and the control unit are connectable so as to be able to communicate via a communication cable, and the heat medium is supplied to the heat dissipation terminal in which the communication cable does not intervene between the control unit and the heat dissipation terminal in a state where the communication cable does not intervene between any of the heat dissipation terminals and the control unit, and the heat dissipation instruction is enabled by the remote controller. Hot water heater.

[0013] In the storage unit of the water heater and heater described in [2] above, information on whether to dissipate heat from one or more heat dissipation terminals is stored as a plurality of groups with different combinations. Among the plurality of groups stored in the storage unit, the combination of one or more heat dissipation terminals for which heat dissipation is desired is selected as the group including the heat dissipation terminal to dissipate heat and set in the setting unit. The control unit controls the switching valve so that one or more heat dissipation terminals of the group set in the setting unit dissipate heat in response to an operation of a heat dissipation instruction by a remote controller. Thereby, when it is desired to use heating by the heat dissipation terminal, the user can dissipate heat from one heat dissipation terminal included as the heat dissipation terminal to dissipate heat in the group set in the setting unit by an operation of a heat dissipation instruction by the remote controller, or can dissipate heat by bundling a plurality of heat dissipation terminals. Further, since any one of the plurality of groups can be set to dissipate heat from the heat dissipation terminal in response to an operation of a heat dissipation instruction, by changing and setting the group set by the setting unit to a different group, it is possible to change and dissipate heat the combination of one or more heat dissipation terminals desired by the user. Therefore, the operation of dissipating heat by the heat dissipation terminal desired by the user can be easily performed. Furthermore, the water heater and heater can be instructed to dissipate heat by a remote controller so as to supply a heat medium to the heat dissipation terminal (the heat dissipation terminal without a communication cable intervening between the control unit) in a state where communication via a communication cable is not performed between any heat dissipation terminal and the control unit. Because of such a configuration, the heat dissipation terminal can be operated by an operation from the remote controller without intervening a communication cable between the heat dissipation terminals, and the convenience is further improved.

[0014] 〔3〕 The remote controller includes an up button for setting a higher hot water supply temperature by the hot water supply circuit and a down button for setting a lower hot water supply temperature by the hot water supply circuit. The setting unit can be changed from any one of the groups to a different group by at least one of the up button and the down button. The water heater and heater according to [1] or [2].

[0015] According to the water heater and heater described in [3] above, by using the configuration of an existing remote control, it is possible to change a group of one or more heat dissipation terminals to dissipate heat, so that the manufacturing cost can be reduced. In addition, since it is not necessary to add buttons to the remote control for setting (the change of the group that is generally not frequently performed), the usability of the user can be improved.

[0016] 〔4〕 A water heater and heater body including the water supply circuit, the heating circuit, the control unit, the storage unit, and the setting unit, and the remote control. The water heater and heater body includes a substrate having a switch. The setting unit can be set by operating the switch and the remote control. The water heater and heater according to any one of [1] to [3].

[0017] If it is possible to change a group of one or more heat dissipation terminals to dissipate heat only by the remote control, there is a concern that an error may occur or an unintended heat dissipation terminal may dissipate heat if the user accidentally performs a group change operation. According to the water heater and heater described in [4] above, in addition to the remote control, since the group can be set by operating the switch on the substrate (which is generally not set by the user), it is possible to suppress problems caused by the user's incorrect operation.

[0018] 〔5〕 The setting unit can set or change the combination of information on whether or not to dissipate heat of the heat dissipation terminals in the group to any combination. The water heater and heater according to any one of [1] to [4].

[0019] The water heater and heater described in [5] above can change the combination of information on whether or not to dissipate heat of the heat dissipation terminals to any combination by the setting unit, so that the usability can be improved.

[0020] 〔6〕 A water heating and heating system including the heat dissipation terminal and the water heater and heater according to any one of [1] to [5].

[0021] <First Embodiment> The following description relates to the water heater and heater 1 according to the first embodiment. 1. Overall Configuration of the Water Heater and Heater 1 FIG. 1 is a schematic circuit diagram of the water heater and heater 1. The water heater and heater 1 mainly includes a hot water supply circuit 2, a heating circuit 3, a bath circuit 4, etc., and is a device capable of performing hot water supply operation, automatic water filling operation, afterburning operation, heating operation, etc.

[0022] The water heater and heater 1 is provided with a housing 1A configured as a metal casing, and inside this housing 1A, a first combustion system unit 5 and a second combustion system unit 6 are configured. The housing 1A is configured as, for example, a metal can body or a metal box body, and is configured to accommodate a hot water supply burner 8A, a heating burner 33A as an example of a burner, a hot water supply side heat exchanger 7, a heating side heat exchanger 32 as an example of a heat exchanger, etc. The first combustion system unit 5 is a combustion system that performs gas combustion and water heating when the hot water supply circuit 2 performs a hot water supply operation. The second combustion system unit 6 is a combustion system that performs gas combustion and water heating during a heating operation or an afterburning operation.

[0023] The hot water supply circuit 2 is a circuit that heats the water supplied from the outside of the water heater and heater 1 by the hot water supply side heat exchanger 7 and supplies hot water. The hot water supply circuit 2 includes the first combustion system unit 5, and specifically includes a plurality of hot water supply burners 8A and a hot water supply side heat exchanger 7. Above the hot water supply burner 8A, an ignition plug 85 and a flame sensor 86 are provided. The ignition plug 85 ignites the combustion gas by generating a spark discharge in response to an input signal from the control device 70, and the flame generated by the combustion is detected by the flame sensor 86. The first combustion system unit 5 is provided with a hot water supply combustion chamber 5A, and a hot water supply side burner unit 8 and a hot water supply side heat exchanger 7 are provided in the hot water supply combustion chamber 5A. The hot water supply side burner unit 8 includes burner blocks 9A, 9B, 9C, and each of the burner blocks 9A, 9B, 9C includes a plurality of hot water supply burners 8A. Each of the plurality of hot water supply burners 8A is configured as a gas burner that burns gas.

[0024] The hot water supply side heat exchanger 7 is a heat exchanger heated by the exhaust gas generated by the hot water supply burner 8A. The hot water supply side heat exchanger 7 includes a first hot water supply side heat exchanger 7A and a second hot water supply side heat exchanger 7B. The first hot water supply side heat exchanger 7A has a plurality of fins 7Z. The first combustion system section 5 is provided with the first hot water supply side heat exchanger 7A above a plurality of hot water supply burners 8A, and the second hot water supply side heat exchanger 7B is provided above the first hot water supply side heat exchanger 7A. A pipeline 7C is connected between the downstream end of the second hot water supply side heat exchanger 7B and the upstream end of the first hot water supply side heat exchanger 7A, and the hot water flowing through the second hot water supply side heat exchanger 7B flows through the pipeline 7C to the first hot water supply side heat exchanger 7A. The hot water supply side heat exchanger 7 heats the water passing through the inside by the exhaust gas (combustion exhaust gas) generated by burning gas with a plurality of hot water supply burners 8A. The first hot water supply side heat exchanger 7A recovers sensible heat from the combustion exhaust gas discharged from the hot water supply side burner unit 8, and the second hot water supply side heat exchanger 7B recovers latent heat from the combustion exhaust gas discharged from the hot water supply side burner unit 8.

[0025] The hot water supply circuit 2 further includes a water supply pipe 11, a water supply control valve 13A, a water flow sensor 14, a hot water outlet pipe 10, a bypass pipe 12, a bypass control valve 13B, a thermistor 15A (hot water supply inner cylinder thermistor), a thermistor 15B (hot water supply and outlet thermistor), etc. The water supply pipe 11 is connected to the inlet of the hot water supply side heat exchanger 7. The water supply pipe 11 is connected to an external pipe, and is configured as a pipeline that introduces tap water from, for example, a water supply and flows this tap water toward the upstream end (inlet) of the hot water supply side heat exchanger 7. The water flow sensor 14 is a sensor that detects the flow rate of the water flowing through the water supply pipe 11. The water supply control valve 13A is a valve for controlling the flow rate of the water flowing through the water supply pipe 11, and is a valve that changes the opening degree of the water supply pipe 11 by control. The hot water outlet pipe 10 is connected to the downstream end (outlet) of the hot water supply side heat exchanger 7. The hot water outlet pipe 10 is a pipeline that flows the hot water heated by the hot water supply side heat exchanger 7. The hot water outlet pipe 10 forms a path for discharging the hot water heated by the hot water supply side heat exchanger 7 outside the appliance.

[0026] A bypass pipe 12 is connected between the water supply pipe 11 and the hot water outlet pipe 10 so as to bypass the hot water side heat exchanger 7. A bypass control valve 13B (bypass control valve) is provided in the bypass pipe 12. The bypass control valve 13B is a valve for controlling the flow rate of water flowing through the bypass pipe 12. Specifically, it is configured as a valve that changes the opening degree of the bypass pipe 12 by control. A thermistor 15A is provided upstream of the connection portion of the bypass pipe 12 in the hot water outlet pipe 10. The thermistor 15A detects the temperature of the hot water discharged from the hot water side heat exchanger 7. Specifically, it detects the hot water temperature near the outlet of the first heat exchanger 7A on the hot water supply side. A thermistor 15B is provided downstream of the connection portion of the bypass pipe 12. The thermistor 15B detects the hot water temperature after mixing of the water from the bypass pipe 12. Specifically, it detects the temperature of the hot water supplied downstream of the confluence point of the bypass pipe 12 in the hot water outlet pipe 10. The temperatures of the hot water detected by these thermistors 15A and 15B are input to a control device 70 described later.

[0027] The hot water supply circuit 2 further includes a gas pipe 16, a main gas solenoid valve 17, a gas proportional valve 18, and a solenoid valve 19. The gas pipe 16 is a pipe through which gas supplied from outside the hot water supply and heating machine 1 through the gas inlet passes, and forms a path for supplying gas to the hot water supply burner 8A. A main gas solenoid valve 17 is provided upstream of the gas pipe 16, and a gas proportional valve 18 is provided downstream of the main gas solenoid valve 17. The downstream side of the gas proportional valve 18 (hot water supply gas proportional valve) in the gas pipe 16 branches, and branch pipes 16A to each of the burner blocks 9A, 9B, 9C and branch pipes 16B to each of the burner blocks 34A, 34B are provided. Solenoid valves 19 are respectively provided in each branch pipe 16A. The solenoid valve 19 (hot water supply switching solenoid valve) switches the branch pipe 16A between an open state (supply possible state) and a closed state (shut-off state), and the supply and shut-off of fuel gas to each of the burner blocks 9A, 9B, 9C are individually switched by each solenoid valve 19. By switching the solenoid valve 19, the combustion range of the hot water supply side burner unit 8 is switched, and each combustion range is associated as a stage number.

[0028] The hot water supply circuit 2 further includes a fan 20. The fan 20 has a rotating body 20B that generates wind by its rotation and a drive source 20A that rotates the rotating body 20B. The fan 20 is provided below the hot water supply combustion chamber 5A. By the operation of the fan 20, combustion air is supplied to each hot water supply burner 8A and the heating burner 33A, and the combustion exhaust gas discharged from the hot water supply side burner unit 8 and the heating side burner unit 33 is discharged from the exhaust port 90. Near the fan 20, a current sensor 75 that detects the drive current of the fan 20 and a rotation speed sensor 76 that detects the rotation speed (rotational speed) of the fan 20 are provided. Signals corresponding to the drive current of the fan 20 detected by the current sensor 75 and signals corresponding to the rotation speed of the fan 20 detected by the rotation speed sensor 76 are output to the control device 70. The hot water supply circuit 2 is also provided with an igniter for ignition, an ignition electrode, a hot water supply frame rod, etc.

[0029] The bath circuit 4 includes a bath circulation path 63 and a bath heat exchanger 50. The bath circulation path 63 forms a flow path configured to circulate the hot water derived from an external bathtub 52 and introduce it into the bathtub 52. The bath heat exchanger 50 is configured as a liquid-liquid heat exchanger that performs heat exchange between the heat medium flowing through the bath heating branch path 51 and the hot water flowing through the bath circulation path 63.

[0030] The bathtub heat exchanger 50 is provided with a pipe 50A that forms part of the bathtub circulation path 63, and is configured such that the bathtub heating branch path 51 is disposed within the pipe 50A. The bathtub circulation path 63 is configured to include the pipe 50A, the bathtub supply pipe 53, and the bathtub return pipe 54. When the bathtub circulation pump 55 is operating, the bathtub circulation path 63 functions as a flow path for drawing out hot water from the bathtub 52 provided outside the hot water supply and heating machine 1, and functions as a flow path for circulating the drawn-out hot water and introducing it into the bathtub 52. The bathtub return pipe 54 is provided with a bathtub circulation pump 55 that causes the hot water within the bathtub return pipe 54 to flow in a predetermined direction, and a water flow switch 57 that detects that hot water at a predetermined flow rate or more is flowing through the bathtub return pipe 54. The bathtub return pipe 54 is provided between the bathtub 52 outside the appliance and the pipe 50A, and forms a flow path for flowing hot water from the bathtub 52 to the pipe 50A when the bathtub circulation pump 55 is operating. The bathtub supply pipe 53 is provided between the pipe 50A and the bathtub 52, and forms a flow path for flowing hot water from the pipe 50A to the bathtub 52 when the bathtub circulation pump 55 is operating. The bathtub supply pipe 53 is provided with a bathtub supply thermistor 64 that detects the temperature of the hot water flowing out from the bathtub heat exchanger 50 into the bathtub 52. The bathtub return pipe 54 is provided with a bathtub return thermistor 65 that detects the temperature of the hot water flowing into the bathtub return pipe 54 from the bathtub 52.

[0031] The drain pipe 59 is connected to the bathtub return pipe 54 in a configuration branched from the hot water outlet pipe 10. The drain pipe 59 communicates with the bathtub return pipe 54. The drain pipe 59 is provided with a hot water supply solenoid valve 60, a drain water volume sensor 61, a plurality of check valves 62, and the like. When the hot water supply solenoid valve 60 provided in the drain pipe 59 is opened during the operation of the hot water supply circuit 2, the hot water heated by the hot water supply circuit 2 is supplied to the bathtub 52 through the drain pipe 59.

[0032] The heating circuit 3 is a circuit that can heat the heat medium by means of the heating-side heat exchanger 32 and supply the heat medium to the heating terminal (heat dissipation terminal) via the heat medium circulation path 48. In the present embodiment, the heat medium is, for example, hot water. Note that a fluid other than hot water may be used as the heat medium. The heating circuit 3 includes a second combustion system unit 6 and a heat medium circulation path 48. The second combustion system unit 6 is provided with a heating combustion chamber 6A, and a heating-side burner unit 33 and a heating-side heat exchanger 32 are provided in the heating combustion chamber 6A. The heating combustion chamber 6A is partitioned from the hot water supply combustion chamber 5A by a partitioning member 80 in the housing 1A, and a temperature sensor 82 for detecting the temperature of the heating combustion chamber 6A is provided on the partitioning member 80.

[0033] The heating-side burner unit 33 includes burner blocks 34A and 34B, and each of the burner blocks 34A and 34B includes a plurality of heating burners 33A. Each of the plurality of heating burners 33A is configured as a gas burner that burns gas. An ignition plug 85 and a flame sensor 86 are provided above the heating burner 33A.

[0034] The heating-side heat exchanger 32 is a heat exchanger heated by the exhaust gas generated by the heating burner 33A. Specifically, it is a device that acts to heat the heat medium passing through its interior by the combustion exhaust gas of the heating burner 33A. The heating-side heat exchanger 32 includes a heating-side first heat exchanger 32A and a heating-side second heat exchanger 32B. The heating-side first heat exchanger 32A has a plurality of fins 32Z. The second combustion system unit 6 has the heating-side first heat exchanger 32A provided above a plurality of heating burners 33A, and the heating-side second heat exchanger 32B provided above the heating-side first heat exchanger 32A. The heating-side heat exchanger 32 heats the heat medium passing through its interior by the exhaust gas (combustion exhaust gas) generated by burning gas with a plurality of heating burners 33A. The heating-side first heat exchanger 32A is supplied with the exhaust gas (combustion exhaust gas) generated by burning gas with the heating burner 33A (gas burner), and functions to heat the heat medium passing through the heating-side first heat exchanger 32A by the heat of this combustion exhaust gas. The heating-side first heat exchanger 32A recovers sensible heat from the combustion exhaust gas discharged from the heating-side burner unit 33. The heating-side second heat exchanger 32B is supplied with the gas after the combustion exhaust gas has passed through the heating-side first heat exchanger 32A, and functions to heat the heat medium passing through the heating-side second heat exchanger 32B by this gas. The heating-side second heat exchanger 32B recovers latent heat from the combustion exhaust gas discharged from the heating-side burner unit 33.

[0035] The heat medium circulation path 48 is a path for circulating the heat medium so as to pass through the heating-side heat exchanger 32, forming the flow path of the heat medium. The heat medium circulation path 48 includes a common forward flow path 38K as a heating forward pipe, a first internal flow path 38A as a heating high-temperature forward pipe, a second internal flow path 38B as a heating low-temperature forward pipe, and a common flow path 38C as a heating return pipe.

[0036] As shown in Fig. 1, when the first heat dissipation terminal 39A as a heating terminal is connected, the heat medium circulation path 48 is configured such that the heat medium circulates through the common flow path 38K, the first internal flow path 38A, the first terminal flow path 38G of the first heat dissipation terminal 39A, and the common flow path 38C. When the second heat dissipation terminal 39Z as a heating terminal is connected as shown in Fig. 1, the heat medium circulation path 48 is configured such that the heat medium circulates through the common flow path 38K, the second internal flow path 38B, the second terminal flow path 38H of the second heat dissipation terminal 39Z, and the common flow path 38C.

[0037] The first internal flow path 38A is connected to the first heat dissipation terminal 39A as a flow path so as to communicate with the first terminal flow path 38G provided outside the hot water heating apparatus 1. The first internal flow path 38A is configured as a flow path branched from the branch portion 38J, and is configured as a flow path for flowing the heat medium from the branch portion 38J to the first heat dissipation terminal 39A. A part of the first internal flow path 38A is provided in the first heat exchanger 32A on the heating side, and the heat medium flowing through the first internal flow path 38A is configured to be heated in the first heat exchanger 32A on the heating side.

[0038] The second internal flow path 38B is connected to the second heat dissipation terminal 39Z as a flow path so as to communicate with the second terminal flow path 38H provided outside the hot water heating apparatus 1. The second internal flow path 38B is configured as a flow path branched from the branch portion 38J, and is configured as a flow path for flowing the heat medium from the branch portion 38J to the second heat dissipation terminal 39Z.

[0039] The heating circuit 3 further includes an expansion tank 36, a heating circulation pump 37, a heating high-temperature thermistor 40, and a heating low-temperature thermistor 41. The common flow path 38C is a flow path through which the heat medium flowing into the inflow portion 35A returns to the expansion tank 36. In the example of FIG. 1, the upstream end of the common flow path 38C is the inflow portion 35A, and the downstream end of the common flow path 38C is connected to the inlet portion 36C of the expansion tank 36. The common flow path 38C is configured as a pipe that introduces the heat medium exiting from the first heat dissipation terminal 39A or the second heat dissipation terminal 39Z into the interior through the inflow portion 35A and causes it to flow through the heating-side heat exchanger 32 (heating-side second heat exchanger 32B). The common flow path 38C is configured to communicate with the first heat dissipation terminal 39A and the second heat dissipation terminal 39Z, and is connected to the first heat dissipation terminal 39A and the second heat dissipation terminal 39Z as a flow path for flowing the heat medium.

[0040] An intermediate pipe 38D and an intermediate pipe 38E are provided between the outlet of the heating-side second heat exchanger 32B and the inlet of the heating-side first heat exchanger 32A. In the paths of the intermediate pipes 38D and 38E, the expansion tank 36 and the heating circulation pump 37 are provided, and the heat medium can flow from the heating-side second heat exchanger 32B to the heating-side first heat exchanger 32A through the intermediate pipe 38D, the expansion tank 36, and the intermediate pipe 38E. The intermediate pipe 38D is a part of the common flow path 38C and is a flow path between the outlet of the heating-side second heat exchanger 32B and the inlet portion 36C of the expansion tank 36. The intermediate pipe 38E is a pipe constituted by a part of the common flow path 38K and the first internal flow path 38A, and is provided between the outlet portion 36B of the expansion tank 36 and the inlet of the heating-side first heat exchanger 32A.

[0041] The common flow path 38K is configured as a flow path that introduces the heat medium flowing out from the outlet portion 36B and flows the heat medium flowing out from the expansion tank 36. A heating circulation pump 37 is provided in the middle of the common flow path 38K. The heating circulation pump 37 causes the heat medium in the common flow path 38K to flow from the expansion tank 36 side to the branch portion 38J side.

[0042] The second internal flow path 38B is provided in a configuration where a plurality of internal branch paths 38F branch off. A low-temperature switching valve 39G (hereinafter also referred to as the switching valve 39G) is provided in each internal branch path 38F as a valve for opening and closing each branch path 39F. In the example of FIG. 1, one internal branch path 38F communicates with the second heat radiation terminal 39Z and is connected to the second heat radiation terminal 39Z outside the appliance. The downstream sides of the first heat radiation terminal 39A and the second heat radiation terminal 39Z communicate with a common flow path 38C. The first heat radiation terminal 39A is, for example, a high-temperature heating terminal such as a heating blower that blows warm air into a bathroom or a dressing room. The second heat radiation terminal 39Z is, for example, a low-temperature heating terminal such as floor heating in a dressing room.

[0043] The heating high-temperature thermistor 40 is provided in the first internal flow path 38A on the outlet side of the heating-side heat exchanger 32, and detects the temperature of the heat medium flowing out from the heating-side heat exchanger 32 (specifically, the heat medium flowing out from the first heat exchanger 32A on the heating side). The temperature detected by the heating high-temperature thermistor 40 corresponds to the temperature of the heat medium flowing into the first heat radiation terminal 39A during the circulation of the heat medium passing through the first heat radiation terminal 39A. The heating low-temperature thermistor 41 is provided in the expansion tank 36. The temperature detected by the heating low-temperature thermistor 41 corresponds to the temperature of the heat medium flowing into the second heat radiation terminal 39Z during the circulation of the heat medium passing through the second heat radiation terminal 39Z.

[0044] The heating circuit 3 includes a plurality of branch pipes 16B and a plurality of heating switching solenoid valves 44. As described above, the branch pipe 16B is provided in a configuration branched from the gas pipe 16 to the heating circuit 3 side. Each heating switching solenoid valve 44 is provided in each branch pipe 16B. The heating switching solenoid valve 44 is configured to switch the branch pipe 16B in which it is provided between an open state (supply possible state) and a closed state (cut-off state). The supply and cut-off of the fuel gas to each of the burner blocks 34A, 34B are individually switched by each heating switching solenoid valve 44. By switching the heating switching solenoid valve 44, the combustion range of the heating-side burner unit 33 is switched, and each combustion range is associated as a number of steps. Note that the heating circuit 3 is also provided with an ignition electrode, a heating frame rod, and the like.

[0045] In the heating circuit 3, hot water heated by the heating-side heat exchanger 32 circulates through the heat medium circulation path 48 due to the operation of the heating circulation pump 37. Specifically, in the heating circuit 3, when the heating circulation pump 37 operates, the hot water flowing through the heat medium circulation path 48 is heated by the combustion exhaust gas discharged from the heating-side burner unit 33 in the heating-side heat exchanger 32, and circulates through the common flow path 38C, the first internal flow path 38A, and the first heat dissipation terminal 39A, and also circulates through the common flow path 38C, the second internal flow path 38B, and the second heat dissipation terminal 39Z. In the example of FIG. 1, hot water is supplied to the first heat dissipation terminal 39A according to the operation of the high-temperature switching valve 39H which is a built-in thermostatic valve. The second heat dissipation terminal 39Z is configured as a low-temperature heating terminal, and hot water is supplied to the second heat dissipation terminal 39Z according to the operation of the low-temperature switching valve 39G which is a thermostatic valve inside the appliance.

[0046] As shown in FIG. 1, a branch path 51 for bath heating is provided in a configuration branched from the first internal flow path 38A. The branch path 51 for bath heating branches from a position on the downstream side of the heating-side heat exchanger 32 in the heat medium circulation path 48 (specifically, on the downstream side of the first heating-side heat exchanger 32A), and forms a flow path for guiding the heat medium flowing through the heat medium circulation path 48 to the bath heat exchanger 50 side. The branch path 51 for bath heating is connected between the first internal flow path 38A and the common flow path 38C so as to communicate with each other. A control valve 58 is provided on the upstream side of the bath heat exchanger 50 in the branch path 51 for bath heating. The control valve 58 is configured to open and close the branch path 51 for bath heating, and is configured to switch between a closed state in which water flow passing through itself in the branch path 51 for bath heating is blocked, and an open state in which water flow passing through itself in the branch path 51 for bath heating is allowed.

[0047] The hot water supply and heating machine 1 further includes a control device 70 which is an example of a control unit, a hot water supply remote controller 71, a bath remote controller 72, and a room temperature thermistor (not shown). The control device 70 is an electronic control device including an information processing device such as a CPU, a memory such as a semiconductor memory device, an interface circuit, etc., and functions as a controller for performing various controls. Various programs, data tables, set values, etc. are stored in the above memory. The control device 70 is configured to be able to acquire signals from each sensor and switch (thermistor, water volume sensor, switch, etc.), and controls a hot water supply circuit 2, a heating circuit 3, a bath circuit 4, etc. The above room temperature thermistor is provided as a temperature detection means for detecting the temperature in the dressing room, for example, in the dressing room. Note that the control device 70 may be configured by a single device (for example, a controller configured as a single unit), or may be configured by a plurality of devices.

[0048] 2. Basic operation of the hot water supply and heating machine 1 (Normal hot water supply operation) When a hot water supply faucet provided outside the device to communicate with the hot water outlet pipe 10 is opened and water flows into the appliance, and the water volume sensor 14 outputs a signal indicating the flow of water, the control device 70 rotates the fan 20 for a predetermined time to discharge the combustion exhaust gas stored in the hot water supply combustion chamber 5A (purging). Then, the control device 70 opens the original gas solenoid valve 17 of the gas pipe 16 and each solenoid valve 19, and opens the gas proportional valve 18 at a predetermined opening degree to control the supply of gas to each hot water supply burner 8A, and operates the igniter to ignite the hot water supply burner 8A. When gas is burned by the hot water supply burner 8A by such control, the water passing through the hot water supply side heat exchanger 7 is heated by the combustion exhaust gas generated by the combustion and the hot water outlet operation is performed so that the water flows to the hot water outlet pipe 10, and the heated hot water is discharged from the above hot water supply faucet.

[0049] During the above hot water discharging operation, the control device 70 monitors the hot water temperature detected by the thermistor 15B provided in the hot water discharge pipe 10, and controls the opening and closing of the solenoid valve 19 and adjusts the opening degree of the gas proportional valve 18 so that the hot water temperature becomes the set temperature indicated by the hot water supply remote controller 71 or the bath remote controller 72. At the same time, the control device continuously changes the air volume by controlling the rotation speed of the fan 20. When the hot water supply tap is closed during the above-mentioned hot water discharging operation and the signal output by the water volume sensor 14 indicates a water flow stop state, the control device 70 closes the original gas solenoid valve 17 and the solenoid valve 19 to extinguish the hot water supply burner 8A, and rotates the fan 20 for a predetermined time to perform post-purge.

[0050] (Automatic hot water filling operation) The control device 70 can perform control to automatically fill the bathtub 52 with hot water. For example, when the hot water filling switch provided on the hot water supply remote controller 71 or the bath remote controller 72 is pressed, the control device 70 sets the hot water temperature to the hot water filling temperature set by the hot water supply remote controller 71 or the bath remote controller 72 as the target temperature (for example, 40 ° C) and starts hot water filling. Specifically, the control device 70 opens the hot water supply solenoid valve 60 in the dropping pipe 59 to put the hot water supply circuit 2 into a water flow state, and burns the hot water supply burner 8A so that the heated hot water flows into the hot water discharge pipe 10. The hot water flowing through the hot water discharge pipe 10 in this way is supplied to the bathtub 52 through the dropping pipe 59 and the bath return pipe 54.

[0051] After the control device 70 starts supplying hot water to the bathtub 52 in this way, the control device 70 monitors whether the water volume (total water volume since the start of automatic hot water filling) detected by the dropping water volume sensor 61 provided in the dropping pipe 59 has reached the set water volume. When it is confirmed that the set water volume has been reached, the control device closes the hot water supply solenoid valve 60 to stop the water flow, extinguishes the hot water supply burner 8A, and ends the hot water filling. After that, the control device 70 operates the bath circulation pump 55 to circulate the hot water in the bathtub 52 in the bath circuit 4. When the control device 70 finishes hot water filling, the control device notifies the hot water supply remote controller 71 or the bath remote controller 72 of the end of hot water filling.

[0052] (Automatic reheating operation) The control device 70 can perform control to automatically reheat (boil up) the water stored in the bathtub 52. For example, when the reheat switch provided on the hot water supply remote controller 71 or the bath remote controller 72 is pressed, the control device 70 sets the reheat temperature to the target temperature (e.g., 40°C) set on the hot water supply remote controller 71 or the bath remote controller 72 and starts the reheat. Specifically, the control device 70 ignites the heating burner 33A, opens the control valve 58, operates the bath circulation pump 55, and performs reheat by heating with the bath heat exchanger 50 while circulating the hot water in the bathtub 52. After starting such reheat, the control device 70 monitors whether the hot water temperature detected by the bath return thermistor 65 has reached the target temperature, and when it is confirmed that the temperature has reached, the control device 70 extinguishes the heating burner 33A, stops the bath circulation pump 55, and ends the reheat. When the control device 70 ends the reheat, it notifies the hot water supply remote controller 71 or the bath remote controller 72 of the end of the reheat.

[0053] 3. Configuration for supplying a heat medium to the first heat dissipation terminal 39A (high-temperature heating terminal) and the second heat dissipation terminal 39Z (low-temperature heating terminal) The hot water supply and heating machine 1 constitutes a hot water supply system while being connected to the first heat dissipation terminal 39A and the second heat dissipation terminal 39Z, and supplies the heat medium that has been branched in the internal branched flow path to the external first heat dissipation terminal 39A and second heat dissipation terminal 39Z.

[0054] As shown in FIG. 1, the downstream end of the common flow path 38K in the heat medium circulation path 48 is a branch portion 38J. The branch portion 38J is a portion that branches the flow of the heat medium flowing through the common flow path 38K. The upstream side of the branch portion 38J is the common flow path 38K, and the downstream side of the branch portion 38J branches into a first internal flow path 38A and a second internal flow path 38B. The first internal flow path 38A has a reheat branch portion 56 that branches into the bath circuit 4, and on the bath circuit 4 side branched at the reheat branch portion 56, the bath heating branch path 51 passes through the bath heat exchanger 50 and is connected to the common flow path 38C. The lower side (downstream side) of the reheat branch portion 56 has a connection portion 46B that branches into a bypass flow path 46.

[0055] The bypass flow path 46 is provided between the common flow path 38C and the first internal flow path 38A. The bypass flow path 46 is a path through which the heat medium can flow so as to bypass between the common flow path 38C and the first internal flow path 38A.

[0056] The downstream end of the first internal flow path 38A is configured to be connectable to the outside and is a first outflow portion 35B through which the heat medium flows out. The first outflow portion 35B is provided at the downstream end of the first internal flow path 38A and is configured as an outlet for flowing out the heat medium from the first internal flow path 38A toward the first terminal flow path 38G. The downstream end of the second internal flow path 38B is configured to be connectable to the outside and is a second outflow portion 35C through which the heat medium flows out. The second outflow portion 35C is provided at the downstream end of the second internal flow path 38B and is configured as an outlet for flowing out the heat medium from the second internal flow path 38B toward the second terminal flow path 38H. The upstream end of the common flow path 38C is configured to be connectable to the outside and is an inflow portion 35A through which the heat medium flows in. The inflow portion 35A is provided on the downstream side of the first terminal flow path 38G and on the downstream side of the second terminal flow path 38H, and is an inlet through which the heat medium flowing through the first terminal flow path 38G flows in, and is also an inlet through which the heat medium flowing through the second terminal flow path 38H flows in.

[0057] Outside the hot water heater 1, a first heat dissipation terminal 39A and a second heat dissipation terminal 39Z are provided, to which the heat medium is supplied from the hot water heater 1 and which communicate with the heat medium circulation path 48. The first heat dissipation terminal 39A has a first terminal flow path 38G through which the heat medium flows, and dissipates the heat of the heat medium flowing through the first terminal flow path 38G. In the space near the first heat dissipation terminal 39A, the air is heated by the heat of the heat medium flowing through the first terminal flow path 38G being dissipated. The first heat dissipation terminal 39A is configured as a high-temperature heating terminal. The second heat dissipation terminal 39Z has a second terminal flow path 38H through which the heat medium flows, and dissipates the heat of the heat medium flowing through the second terminal flow path 38H. In the space near the second heat dissipation terminal 39Z, the air is heated by the heat of the heat medium flowing through the second terminal flow path 38H being dissipated. The downstream end of the first terminal flow path 38G and the downstream end of the second terminal flow path 38H are configured to be connectable so as to communicate with the inflow portion 35A of the hot water heater 1.

[0058] The supply of the heat medium to the first terminal flow path 38G is switched between a state where the supply of the heat medium is blocked and a state where it is permitted by opening and closing the high-temperature switching valve 39H. When the high-temperature switching valve 39H is open, it is allowed for the heat medium to pass from one side to the other side of the high-temperature switching valve 39H, and it is allowed for the heat medium to flow from within the first internal flow path 38A, through the first terminal flow path 38G, to the downstream side (inflow portion 35A side) of the high-temperature switching valve 39H. When the high-temperature switching valve 39H is closed, the passage of the heat medium through the high-temperature switching valve 39H is blocked, and the heat medium does not flow from within the first internal flow path 38A to the downstream side of the high-temperature switching valve 39H. The supply of the heat medium to the second terminal flow path 38H is switched between a state where the supply of the heat medium is blocked (second state) and a state where the supply of the heat medium is permitted (first state) by opening and closing the low-temperature switching valve 39G. When the low-temperature switching valve 39G is open (first state), it is allowed for the heat medium to pass through the low-temperature switching valve 39G, and it is allowed for the heat medium to flow from within the second internal flow path 38B, through the second terminal flow path 38H, to the downstream side (inflow portion 35A side) of the low-temperature switching valve 39G. When the low-temperature switching valve 39G is closed (second state), the passage of the heat medium through the low-temperature switching valve 39G is blocked, and the heat medium does not flow from within the second internal flow path 38B to the downstream side of the low-temperature switching valve 39G. Both the high-temperature switching valve 39H and the low-temperature switching valve 39G are thermostatic valves. The thermostatic valve, for example, when the power is on, expands the expansion body with the heat of the heating element (Positive Temperature Coefficient) to push the piston and open the valve so that hot and cold water can flow, and when the power is off, the heating element naturally dissipates heat to contract the expansion body and close the valve.

[0059] The heat medium flowing into the inflow portion 35A circulates through the heat medium circulation path 48 in the water heater 1. Specifically, the heat medium flows downstream from the inflow portion 35A through the common flow path 38C, is heated by the heating-side second heat exchanger 32B, then passes through the expansion tank 36, and is further moved downstream by the power of the heating circulation pump 37. Then, the heat medium flowing toward the branch portion 38J is divided at the branch portion 38J into the heat medium flowing toward the first internal flow path 38A and the heat medium flowing toward the second internal flow path 38B. The heat medium flowing through the first internal flow path 38A is heated by the heating-side first heat exchanger 32A on the way.

[0060] The heat medium flowing through the first internal flow path 38A flows out toward the first terminal flow path 38G with the first outflow portion 35B as the outlet. The heat medium flowing through the second internal flow path 38B flows out as the heat medium toward the second terminal flow path 38H with the second outflow portion 35C as the outlet. In the example of FIG. 1, a plurality of first outflow portions 35B are provided, and each end of the plurality of internal branch paths 38F is the respective first outflow portion 35B.

[0061] The high-temperature switching valve 39H that opens and closes the first terminal flow path 38G, the low-temperature switching valve 39G that opens and closes the second internal flow path 38B, and the heating circulation pump 37 are controlled by the control device 70. The control device 70 is electrically connected to each of the high-temperature switching valve 39H, the low-temperature switching valve 39G, and the heating circulation pump 37, and performs opening / closing control of the high-temperature switching valve 39H and the low-temperature switching valve 39G and drive control of the heating circulation pump 37.

[0062] 4. Configuration for Radiating Heat from a Plurality of Second Heat Dissipation Terminals 39Z with a Hot Water Remote Controller 71 (Hot Water and Heating Remote Controller) The hot water and heating machine 1 includes a hot water and heating machine main body 1B, a hot water remote controller 71 which is an example of a remote controller, and a bath remote controller 72. The hot water and heating machine main body 1B includes a hot water supply circuit 2, a heating circuit 3, a control device 70, a storage unit 73, and a wiring connection unit 74.

[0063] Figure 2 is a front view of a hot water supply remote control 71 (hot water supply and heating remote control) installed, for example, on the wall of a building's kitchen. The hot water supply remote control 71 includes an operation switch 91, a bath automatic switch 92, and a floor heating switch 93. When the operation switch 91 is pressed, the operation lamp provided on the operation switch 91 lights up, enabling operations such as starting hot water supply and heating. When the bath automatic switch 92 is pressed, the operation lamp provided on the bath automatic switch 92 lights up, starting the hot water supply for the bath. When the floor heating switch 93 is pressed, the operation lamp provided on the floor heating switch 93 lights up, starting the floor heating. Although details will be described later, when the floor heating switch 93 is pressed, in order to cause one or more second heat dissipation terminals 39Z, which are configured to perform heat dissipation according to the operation of the floor heating switch 93 of this hot water supply remote control 71, to dissipate heat, one or more low-temperature switching valves 39G corresponding to the one or more second heat dissipation terminals 39Z open all at once, and accordingly, heating by the second heat dissipation terminals 39Z starts.

[0064] In addition, the hot water supply remote control 71 includes hot water supply temperature selection switches 95A, 95B, menu buttons 94A, an enter button 94B, a bath reservation button 96A, a floor heating reservation button 96B, an oidaki button 96C, a save button 96D, and a call button 96E. The hot water supply temperature selection switches 95A, 95B are used when adjusting the hot water supply temperature after pressing the operation switch 91. When the up button 95B (▲ button) is pressed, the set temperature increases by 1°C each time, and when the down button 95A (▼ button) is pressed, the set temperature decreases by 1°C each time. The menu button 94A is used to display the menu screen or return to the previous screen. The enter button 94B is used when confirming the selected content. The bath reservation button 96A is used when reserving the hot water supply for the bath. The floor heating reservation button 96B is used when reserving the floor heating. The oidaki button 96C is used when reheating or bringing the bath water to a boil again. The save button 96D is used when restricting the amount of hot water for hot water supply. The call button 96E is used when making a call.

[0065] The remote control display unit 97 displays the hot water supply temperature, the bath temperature, the heat retention time, etc. Further, the remote control display unit 97 displays the A-side and B-side displays that can be used for setting the range (system) of the heating operation described later. For example, the A side can be set to the floor heating on the first floor, and the B side can be set to the floor heating on the second floor. In this case, when using the setting of the A side by operating the hot water supply remote control 71, the display of A and when using the setting of both A and B sides, the display of AB are shown on the remote control display unit 97.

[0066] The setting of the heating operation range (heating operation system setting) is, in more detail, (i) no heating system setting (default setting), (ii) heating system A-side setting, and (iii) heating system AB-side setting. Any of these settings can be selected. The selection of these settings can be performed by operating the hot water supply remote control 71. For example, in the hot water supply remote control 71, when a first predetermined operation defined in advance in the hot water supply remote control 71 is performed, (i) no heating system setting (default setting) is obtained, and when a second predetermined operation defined in advance is performed, (ii) heating system A-side setting is obtained, and when a third predetermined operation defined in advance is performed, (iii) heating system AB-side setting is obtained. In the present embodiment, the heating system has six systems for performing heat radiation of the second heat dissipation terminal 39Z as the floor heating of each of the six rooms, but it is not limited thereto, and it may be five systems or less or seven systems or more.

[0067] (i) When the "no heating system setting" is set in the hot water supply remote control 71, it is set so that none of the low-temperature switching valves 39G can be operated even if the hot water supply remote control 71 is operated.

[0068] (ii) When setting the "Heating System A Surface Setting" on the hot water supply remote control 71, for example, when operating the floor heating start by the hot water supply remote control 71, only the low-temperature switching valve 39G of No. 1 (the first system) operates to open. For the low-temperature switching valves 39G of No. 2 to No. 6 (the second to sixth systems), when they are set in a group that operates in conjunction with the low-temperature switching valve 39G of No. 1 (the first system), the low-temperature switching valve 39G is opened in conjunction with the low-temperature switching valve 39G of No. 1 (the first system) by the operation of starting the floor heating by the hot water supply remote control 71. When they are not set in a group that operates in conjunction with the low-temperature switching valve 39G of No. 1 (the first system), they are controlled to close.

[0069] (iii) When setting the "Heating System AB Surface Setting", when operating the floor heating start by the hot water supply remote control 71, the low-temperature switching valve 39G of No. 1 (the first system) and any one of No. 2 to No. 6 (the second to sixth systems) corresponding to the set group operate to open. For the low-temperature switching valves 39G of No. 3 to No. 6 (the third to sixth systems), when they are set in a group that operates in conjunction with the low-temperature switching valves 39G of No. 1 to No. 5 (the first to fifth systems), the low-temperature switching valves 39G of all the interlocking systems are opened. When they are not set in a group that operates in conjunction with the low-temperature switching valves 39G of No. 1 to No. 5 (the first to fifth systems), they are controlled to close.

[0070] The storage unit 73 stores information on whether to dissipate heat from one or more second heat dissipation terminals 39Z as 10 groups (1 to A) with different combinations. In FIG. 3, for each of "when the system A surface is set" and "when the system B surface is set", symbols corresponding to the heat dissipation modes (such as opening / closing operations by a remote control and interlocking opening / closing operations) of the six second heat dissipation terminals 39Z connected to each of the six low-temperature switching valves 39G are used for assignment. The information divided into 10 groups (1 to A) from 1 to A is stored in the storage unit 73 as the switching valve batch control setting. As shown in FIG. 3, in each group when the system A surface is set, the six low-temperature switching valves 39G are divided into one or more first-type switching valves that are opened when a heat dissipation instruction is received from a remote control connected to the corresponding connector, and one or more second-type switching valves that are associated with any of the first-type switching valves and are opened in conjunction when the first-type switching valve is opened. For the first-type switching valves, it is determined whether they are switching valves that are independently opened / closed or switching valves that are opened / closed in conjunction with any other switching valve. Furthermore, for the second-type switching valves, it is determined which switching valve they are opened / closed in conjunction with.

[0071] For example, in the group "3" (Group 3) when setting the heating system A surface in FIG. 3, the low-temperature switching valve 39G of No. 1 (the first system) is the first type of switching valve that operates in conjunction, and the low-temperature switching valves 39G of No. 2 and No. 3 are the second type of switching valves that operate in conjunction with the low-temperature switching valve 39G of No. 1. Furthermore, all of the low-temperature switching valves 39G of No. 4 to No. 6 are the first type of switching valves that open and close independently according to instructions from the associated remote control. In such an example, when set to Group 3 during the setting of "heating system A surface setting", if an operation to indicate heat dissipation (for example, an operation of pressing the floor heating switch 93) is performed on the remote control (for example, the hot water supply remote control 71) connected to the connector C1 corresponding to the low-temperature switching valve 39G of No. 1, and a heat dissipation instruction corresponding to the above "operation to indicate heat dissipation" is given from this remote control to the control device 70, the control device 70 will perform an opening operation on the low-temperature switching valve 39G that is "associated as performing an opening operation when an operation to indicate heat dissipation is performed on the remote control (hot water supply remote control 71) connected to the connector C1 when set to Group 3" (that is, the low-temperature switching valve 39G of No. 1), and further, the low-temperature switching valves 39G of No. 2 and No. 3 that are associated to operate in conjunction with the low-temperature switching valve 39G of No. 1 (the first system) in Group 3 will also be opened. Note that when a drive stop instruction is given from the remote control connected to the connector C1, the control device 70 will cause the low-temperature switching valve 39G of No. 1 to perform a closing operation, and also cause the low-temperature switching valves 39G of No. 2 and No. 3 that are associated to operate in conjunction with the low-temperature switching valve 39G of No. 1 in Group 3 to perform an opening operation. In this case, the low-temperature switching valves 39G of No. 4 to No. 6 are controlled individually. For example, when an operation to indicate heat dissipation is performed on the remote control (for example, a remote control similar to the hot water supply remote control 71) connected to the connector C4, the control device 70 will perform an opening operation on the low-temperature switching valve 39G that is "associated as performing an opening operation when an operation to indicate heat dissipation is performed on the remote control (hot water supply remote control 71) connected to the connector C4 when set to Group 3" (that is, the low-temperature switching valve 39G of No. 4).

[0072] Alternatively, in the group "6" (Group 3) when setting the heating system A surface in Fig. 3, the low-temperature switching valve 39G of No. 1 (the first system) is the first type of switching valve that operates in conjunction, and the low-temperature switching valves 39G of No. 2 to No. 4 are the second type of switching valves that operate in conjunction with the low-temperature switching valve 39G of No. 1. Further, the low-temperature switching valve 39G of No. 5 is the first type of switching valve that operates in conjunction, and the low-temperature switching valve 39G of No. 6 is the second type of switching valve that operates in conjunction with the low-temperature switching valve 39G of No. 5. In such an example, when it is set to Group 6 during the setting of "heating system A surface setting", if an operation to instruct heat dissipation (for example, an operation of pressing the floor heating switch 93) is performed on the remote control (for example, the hot water supply remote control 71) connected to the connector C1 corresponding to the low-temperature switching valve 39G of No. 1, and a heat dissipation instruction corresponding to the above "operation to instruct heat dissipation" is given from this remote control to the control device 70, the control device 70 will perform the opening operation of the low-temperature switching valve 39G (that is, the low-temperature switching valve 39G of No. 1) "associated as performing an opening operation when an operation to instruct heat dissipation is performed on the remote control (hot water supply remote control 71) connected to the connector C1 during the setting of Group 3", and further, the low-temperature switching valves 39G of No. 2 to No. 4 associated to operate in conjunction with the low-temperature switching valve 39G of No. 1 in Group 6 will also be opened. Alternatively, when it is set to Group 6 during the setting of "heating system A surface setting", if an operation to instruct heat dissipation (for example, an operation of pressing a switch similar to the floor heating switch 93) is performed on the remote control (for example, a remote control similar to the hot water supply remote control 71) connected to the connector C5 corresponding to the low-temperature switching valve 39G of No. 5, and a heat dissipation instruction corresponding to the above "operation to instruct heat dissipation" is given from this remote control to the control device 70, the control device 70 will perform the opening operation of the low-temperature switching valve 39G (that is, the low-temperature switching valve 39G of No. 5) "associated as performing an opening operation when an operation to instruct heat dissipation is performed on the remote control (hot water supply remote control 71) connected to the connector C5 during the setting of Group 6", and further, the low-temperature switching valve 39G of No. 6 associated to operate in conjunction with the low-temperature switching valve 39G of No. 5 in Group 6 will also be opened.

[0073] In the example of FIG. 3, when the floor heating switch 93 is pressed on the hot water supply remote controller 71 during the setting of System A surface, the low-temperature switching valve 39G opens (by the control signal from the control device 70 that has received a signal for starting heating from the hot water supply remote controller 71), which is indicated by a black circle (A surface), and the low-temperature switching valve 39G that opens in conjunction with the black-circle low-temperature switching valve 39G (by the control signal from the control device 70) is indicated by a white circle (A surface).

[0074] Also, when the floor heating switch 93 is pressed on the hot water supply remote controller connected to the corresponding connector during the setting of System B surface, the low-temperature switching valve 39G opens (by the control signal from the control device 70), which is indicated by a black triangle (B surface), and the low-temperature switching valve 39G that opens in conjunction with the black-triangle low-temperature switching valve 39G (by the control signal from the control device 70) is indicated by a white triangle (B surface). Also, for the operation by a heating remote controller (not shown) provided in each room etc. according to each second heat dissipation terminal 39Z, the low-temperature switching valve 39G that opens is indicated by a black square, and the low-temperature switching valve 39G that opens in conjunction with the black-square low-temperature switching valve 39G (by the control signal from the control device 70) is indicated by a white square. What is surrounded by a square outside the black square or white square is a dedicated group, which dissipates heat according to the operation of the heating remote controller. Note that a heating remote controller corresponding to each low-temperature switching valve 39G (for each room) may be provided, but for heating that operates (collectively) by the operation of the hot water supply remote controller 71, the heating remote controller for that system may not be provided. ●... Hot water supply remote controller A surface (connector connectable) 〇... Hot water supply remote controller A surface (interlocking with ●. Connector not connectable) ▲... Hot water supply remote controller B surface (connector connectable) △... Hot water supply remote controller B surface (interlocking with ▲. Connector not connectable) ■... Heating remote controller (connector connectable) □... Heating remote controller (interlocking with ■. Connector not connectable)

[0075] For example, in the case where the system A surface setting is made and the thermal valve collective control setting "3" (group 3) is set, when the floor heating switch 93 is turned on (for example, pressed) by the user in the hot water supply remote control 71 electrically connected to the connector C1, a signal indicating that the floor heating switch 93 is turned on is output from the hot water supply remote control 71 to the control device 70. When the control device 70 receives a signal indicating that the floor heating switch 93 is turned on (the above-mentioned drive signal) from the hot water supply remote control 71 electrically connected to the connector C1, it opens the low temperature switching valves 39G No. 1 to No. 3 indicated by black or white circles in FIG. 3. As a result, the heat medium is supplied to the second heat dissipation terminals 39Z to which the second terminal flow paths 38H are connected to the low temperature switching valves 39G No. 1 to No. 3 in the open state, and floor heating is performed in the first to third systems. For No. 4 to No. 6, when the floor heating of the heating remote control (for each room) corresponding to each second heat dissipation terminal 39Z is turned on, a signal indicating that the floor heating is turned on is output to the control device 70. When the control device 70 receives a signal indicating that the floor heating is turned on, it opens the low-temperature switching valve 39G of the floor heating system that is turned on among No. 4 to No. 6. As a result, the heat medium is supplied to the second heat dissipation terminal 39Z to which the second terminal flow path 38H is connected to the opened low-temperature switching valve 39G, and floor heating is performed for one of the fourth to sixth systems. For example, when a switch similar to the floor heating switch 93 is turned on in a remote control electrically connected to the connector C6, a signal (drive signal) indicating that the floor heating is turned on is given from the remote control to the control device 70 via the connector C6, and when the control device 70 receives this drive signal via the connector C6, it opens the low-temperature switching valve 39G of No. 6 corresponding to the connector C6, and a state is created in which the heat medium is supplied to the second heat dissipation terminal 39Z to which the second terminal flow path 38H is connected to the opened low-temperature switching valve 39G. In addition, when the control device 70 receives a signal indicating that the floor heating switch 93 has been turned on from the hot water remote control 71 electrically connected to the connector C1, the control device 70 links and opens the low temperature switching valves 39G No. 1 to No. 3, even if no communication is performed between the control device 70 and at least any of the multiple second heat dissipation terminals 39Z that receive supply of heat medium via the low temperature switching valves 39G No. 1 to No. 3.

[0076] Also, for example, when the system B surface setting is selected and the thermostatic valve batch control setting "9" is set, when the floor heating switch 93 is turned on by the hot water supply remote controller 71, a signal indicating that the floor heating switch 93 has been turned on is output from the hot water supply remote controller 71 to the control device 70. When the control device 70 receives a signal indicating that the floor heating switch 93 has been turned on from the hot water supply remote controller 71, even if communication is not performed between each second heat dissipation terminal 39Z that receives the supply of the heat medium from the low-temperature switching valves 39G of No. 1 to No. 4 and the control device 70, the low-temperature switching valves 39G of No. 1 and No. 2, which are shown as black circles and white circles in FIG. 3, and the low-temperature switching valves 39G of No. 3 and No. 4, which are shown as black triangles and white triangles, are opened. As a result, the heat medium is supplied to the second heat dissipation terminal 39Z to which the second terminal flow path 38H is connected through the opened low-temperature switching valve 39G, the heat medium is supplied to the second heat dissipation terminal 39Z to which the second terminal flow path 38H is connected through the low-temperature switching valves 39G of No. 1 to No. 4, and floor heating for the first to fourth systems is performed. For No. 5 and No. 6, when the floor heating of the heating remote controller (for each room) corresponding to each second heat dissipation terminal 39Z is turned on, a signal indicating that the floor heating has been turned on is output from the heating remote controller to the control device 70 via the communication cable. When the control device 70 receives a signal indicating that the floor heating has been turned on, it opens the low-temperature switching valve 39G of the system of the floor heating that has been turned on among No. 5 and No. 6. As a result, the heat medium is supplied to the second heat dissipation terminal 39Z to which the second terminal flow path 38H is connected through the opened low-temperature switching valve 39G, and floor heating for either the fifth or sixth system is performed.

[0077] FIG. 4 shows the wiring connection part 74 etc. provided in the hot water supply and heating unit main body 1B, and these are mounted on the substrate 77. And the circuit of the substrate 77 is connected to the control device 70 or is configured as a part of the control device 70. The substrate 77 is provided with connectors CN1 to CN6. The connectors CN1 to CN6 are electrically connected to the control device 70 via the circuit of the substrate 77. For example, the connector CN1 is a part that connects the control device 70 and the switching valve 39G of No. 1, and the wiring from the switching valve 39G of No. 1 is connected to the connector CN1. When a signal that becomes a condition for instructing the opening operation of the switching valve 39G of No. 1 is given from the hot water supply remote controller 71 to the control device 70, the control device 70 gives a drive signal for instructing the opening operation to the switching valve 39G of No. 1 via the connector CN1, and the drive signal causes the low-temperature switching valve 39G of No. 1 (first system) to perform an opening operation. Also, when a stop signal that becomes a condition for instructing the closing operation of the switching valve 39G of No. 1 is given from the hot water supply remote controller 71 to the control device 70, the control device 70 gives a stop signal to the switching valve 39G of No. 1 via the connector CN1, and the drive signal causes the low-temperature switching valve 39G of No. 1 (first system) to perform a closing operation. Similarly, the wiring from the switching valve 39G of No. 2 is connected to the connector CN2. When a signal that becomes a condition for instructing the opening operation of the switching valve 39G of No. 2 is given from the hot water supply remote controller 71 or another remote controller to the control device 70, the control device 70 gives a drive signal for instructing the opening operation to the switching valve 39G of No. 2 via the connector CN2, and the drive signal causes the low-temperature switching valve 39G of No. 2 (second system) to perform an opening operation. Similarly, each of the connectors CN3 to CN6 is a part that connects the switching valves 39G of No. 3 to No. 6 and the control device 70, and each of the switching valves 39G of No. 3 to No. 6 (second to sixth systems) opens and closes in response to a drive signal for instructing an opening operation or a stop signal for instructing a closing operation being given from the control device 70 to the switching valves 39G of No. 3 to No. 6 (third to sixth systems). Note that the attachment of the wiring to the connectors CN1 to CN6 (the wiring connected to the switching valves 39G of No. 1 to No. 6) is performed, for example, during the manufacture of the hot water supply and heating unit 1.In the following description, the second heat dissipation terminal 39Z to which the heat medium is supplied via the switching valve 39G No. 1 is referred to as the second heat dissipation terminal 39Z No. 1. The second heat dissipation terminal 39Z to which the heat medium is supplied via the switching valve 39G No. 2 is referred to as the second heat dissipation terminal 39Z No. 2. The second heat dissipation terminal 39Z to which the heat medium is supplied via the switching valve 39G No. 3 is referred to as the second heat dissipation terminal 39Z No. 3. The second heat dissipation terminal 39Z to which the heat medium is supplied via the switching valve 39G No. 4 is referred to as the second heat dissipation terminal 39Z No. 4. The second heat dissipation terminal 39Z to which the heat medium is supplied via the switching valve 39G No. 5 is referred to as the second heat dissipation terminal 39Z No. 5. The second heat dissipation terminal 39Z to which the heat medium is supplied via the switching valve 39G No. 6 is referred to as the second heat dissipation terminal 39Z No. 6.

[0078] Communication cables used for communication with the heat dissipation terminals can be connected to connectors C1 to C10. For example, when connecting the communication cable of the heating remote control of the second heat dissipation terminal 39Z, connectors C1 to C6 are used. Connector C1 is a connector corresponding to the No. 1 switching valve 39G connected to connector CN1, and is a connector for communicating via a communication cable with a remote control (heating remote control) for operating the second heat dissipation terminal 39Z that receives the heat medium via the switching valve 39G. The No. 1 switching valve 39G may open in response to a heat dissipation instruction from the remote control connected to connector C1, or may open in conjunction with the opening operation of other switching valves 39G even when no remote control is connected to connector C1. Connector C2 is a connector corresponding to the No. 2 switching valve 39G connected to connector CN2, and is a connector for communicating via a communication cable with a remote control (heating remote control) for operating the second heat dissipation terminal 39Z that receives the heat medium via the switching valve 39G. The No. 2 switching valve 39G may open in response to a heat dissipation instruction from the remote control connected to connector C2, or may open in conjunction with the opening operation of other switching valves 39G even when no remote control is connected to connector C2. Connector C3 is a connector corresponding to the switching valve 39G connected to connector CN3, and is a connector for communicating via a communication cable with a remote control (heating remote control) for operating the second heat dissipation terminal 39Z that receives the heat medium via the switching valve 39G. The No. 3 switching valve 39G may open in response to a heat dissipation instruction from the remote control connected to connector C3, or may open in conjunction with the opening operation of other switching valves 39G even when no remote control is connected to connector C3. Connector C4 is a connector corresponding to the switching valve 39G connected to connector CN4, and is a connector for communicating via a communication cable with a remote control (heating remote control) for operating the second heat dissipation terminal 39Z that receives the heat medium via the switching valve 39G. The No. 4 switching valve 39G may open in response to a heat dissipation instruction from the remote control connected to connector C4, or may open in conjunction with the opening operation of other switching valves 39G even when no remote control is connected to connector C4.Connector C5 is a connector corresponding to the switching valve 39G connected to connector CN5, and is a connector for communicating via a communication cable with a remote controller (heating remote controller) for operating the second heat dissipation terminal 39Z that receives the heat medium via the switching valve 39G. The switching valve 39G No. 5 may open in response to a heat dissipation instruction from the remote controller connected to connector C5, or may open in conjunction with the opening operation of other switching valves 39G even when no remote controller is connected to connector C5. Connector C6 is a connector corresponding to the switching valve 39G connected to connector CN6, and is a connector for communicating via a communication cable with a remote controller (heating remote controller) for operating the second heat dissipation terminal 39Z that receives the heat medium via the switching valve 39G. The switching valve 39G No. 6 may open in response to a heat dissipation instruction from the remote controller connected to connector C6, or may open in conjunction with the opening operation of other switching valves 39G even when no remote controller is connected to connector C6. Thus, each of the switching valves 39G may open in response to a heat dissipation instruction from the remote controller connected to the corresponding connector, or may open in conjunction with the opening operation of other switching valves 39G even when no remote controller is connected to the corresponding connector. Thus, each of connectors C1 to C6 is not necessarily used and may not be used depending on the setting. Further, when the control device 70 opens and closes the switching valves 39G connected to each of connectors CN1 to CN6, it does not necessarily perform based on a signal via connectors C1 to C6, and may drive and open / close any of the switching valves 39G based on a signal not via connectors C1 to C6. The control device 70 is capable of communicating with each remote controller electrically connected to connectors C1 to C10.

[0079] Which communication cable to connect to any of the connectors C1 to C6 can vary depending on the usage mode. For example, when setting the A side of FIG. 3 to "7" (Group 7), a remote control (e.g., a hot water and heating remote control 71) is connected to connector C1 corresponding to the No. 1 switching valve 39G, and a remote control (e.g., a remote control similar to the hot water and heating remote control 71) is connected to connector C6 corresponding to the No. 6 switching valve 39G, so that it can operate properly. In this case, the control device 70 can communicate with the remote control (e.g., the hot water and heating remote control 71) connected to the communication cable via the communication cable connected to connector C1. When there is an instruction to start driving (an instruction transmitted when a heat dissipation instruction operation is performed on the remote control) from the remote control, the control device 70 opens the corresponding switching valve 39G (the switching valve 39G to be operated by the remote control connected to connector C1) via the communication cable connected to connector CN1. When there is an instruction to stop driving from the remote control, the control device 70 closes the corresponding switching valve 39G. On the other hand, when setting the A side of FIG. 3 to "7", even if the remote control is not connected to connectors C2 to C5 (that is, even if no heat dissipation instruction is given to the control device 70 via connectors C2 to C5 corresponding to the No. 2 to No. 5 switching valves 39G), in response to the above instruction to start driving from the remote control (e.g., the hot water and heating remote control 71) connected to connector C1, the No. 2 to No. 5 switching valves 39G corresponding to connectors C2 to C5 are opened so as to be interlocked with the No. 1 switching valve 39G.

[0080] When setting the A side of FIG. 3 to "7" (Group 7), when a user performs a predetermined heat dissipation instruction operation on the remote control (e.g., a remote control similar to the hot water and heating remote control 71) connected to connector C6, and there is an instruction to start driving from the remote control to the control device 70, the control device 70 supplies the heat medium to the second heat dissipation terminal 39Z by opening the No. 6 switching valve 39G. When there is an instruction to stop driving from the remote control, the No. 6 switching valve 39G is closed.

[0081] In addition, when an instruction to start driving is received from a remote controller (e.g., the hot water supply and heating remote controller 71) electrically connected to the connectors C1 to C6 as described above, the control device 70 drives the heating circuit 3 so that the heat medium is heated by the heating-side heat exchanger 32, and circulates the heated heat medium through the switching valve 39G that has been opened and flows it to the second heat dissipation terminal 39Z. Although only one second heat dissipation terminal 39Z is shown in FIG. 1, the second heat dissipation terminal 39Z can be connected to any of the six internal branch paths 38F.

[0082] The substrate 77 in Fig. 5 has various switches and a 7-segment display unit 78 mounted thereon. The various switches include trial operation switches SW1 to SW5, a mode switch M1 (tactile switch), and setting change buttons M1A and M1B. The mode switch M1 is an example of the switches on the substrate 77. The change of the batch control setting of the switching valves (Fig. 3) is made as follows. For example, when the user performs a predetermined setting change start operation (e.g., an operation of pressing the mode switch M1 a plurality of times (e.g., 3 times)) on the substrate 77, the control device 70 switches its control mode to the setting change mode. When an operation of inputting information for designating a group is performed in this setting change mode, the group at the time of batch control setting of the switching valves is set, and the number of the set group is stored in the storage unit 73. The operation of inputting information for designating a group is not particularly limited. For example, when a pressing operation is performed on the first setting change button M1A or the second setting change button M1B in the setting change mode, the control device 70 causes the 7-segment display unit 78 on the substrate 77 to display a number. Each time the first setting change button M1A or the second setting change button M1B is pressed in the state where the number is displayed in this way, the number displayed on the display unit 78 is switched. When a predetermined confirmation operation is performed in the state where the number is displayed on the 7-segment display unit 78 after such switching, the group corresponding to the number displayed on the 7-segment display unit 78 at the time of the confirmation operation is set, and the number of the set group is stored in the storage unit 73. Note that the method of setting the group is not limited to this example. For example, each time the up button 95B or the down button 95A is pressed on the hot water supply remote control 71 in the above setting change mode, the numbers of a plurality of groups (1 to A) may be switched, and the group information may be displayed on the 7-segment display unit 78. And when a confirmation operation is performed such that the confirmation button 94B is pressed in the state where the number of any group is displayed, it may be set to the group corresponding to the number displayed at the time of the confirmation operation. In any case, when the group number of the batch control setting of the switching valves (Fig. 3) is set, the group number is stored in the storage unit 73.In the present embodiment, the control device 70, the mode switch M1 of the substrate 77, the setting change buttons M1A and M1B, the confirmation button 94B, the upper button 95B and the lower button 95A of the hot water supply remote controller 71 correspond to an example of the setting unit.

[0083] 5. Examples of effects The storage unit 73 of the hot water heater 1 stores information on whether or not to radiate heat from one or more heat radiating terminals as multiple groups of different combinations. The setting unit can select and set "a group including one heat radiating terminal or a combination of multiple heat radiating terminals" from the multiple groups stored in the storage unit. The control unit controls the switching valve so that "one or more heat radiating terminals" of the group set in the setting unit radiate heat in response to a heat radiating instruction operation using the remote control. With this configuration, when a user wants to use heating in the group set in the setting unit, he or she only needs to operate the remote control to issue a heat radiating instruction. When such an operation is performed, the control unit causes the heat radiating terminals (one or more heat radiating terminals) of the group set in the setting unit to radiate heat. Therefore, when a group including one heat radiating terminal is set, the heat radiating terminal can be caused to radiate heat, and when a group including multiple heat radiating terminals is set, all of the heat radiating terminals can be caused to radiate heat collectively. Furthermore, the hot water heater can be set by changing the group set in the setting unit to a different group. In other words, the setting of "one or more heat dissipation terminals to be operated in response to the operation of the heat dissipation instruction" can be changed, so that if it becomes necessary to change "one or more heat dissipation terminals to be operated in response to the operation of the heat dissipation instruction" for some reason, the group set in the setting unit can be changed to a new desired group, and then the user can easily operate the heat dissipation terminals of the new desired group by operating the heat dissipation instruction with the remote control. Furthermore, not only is it possible to control the supply of heat medium to the heat dissipation terminals corresponding to each remote control in response to each instruction from each remote control connected to each of the multiple signal connection parts, but it is also possible to control the supply of heat medium to multiple heat dissipation terminals in response to an instruction from one remote control connected to one signal connection part. With this configuration, it is not necessary to prepare remote controls in the number corresponding to the heat dissipation terminals, but it is possible to operate multiple heat dissipation terminals in conjunction with each other by operating a common remote control, which further improves convenience.

[0084] The hot water supply remote controller 71 is capable of performing an operation for instructing hot water supply in the hot water supply circuit 2 and an operation for instructing heat dissipation in the second heat dissipation terminal 39Z. In the storage unit 73 of the hot water supply and heating apparatus 1, information on whether or not to dissipate heat from one or a plurality of second heat dissipation terminals 39Z is stored as a plurality of groups with different combinations. The setting unit can set any one of the plurality of groups stored in the storage unit 73. Among the plurality of groups stored in the storage unit 73, the combination of one or a plurality of second heat dissipation terminals 39Z that are desired to dissipate heat is selected as the group including the second heat dissipation terminal 39Z to be dissipated and set by the setting unit. The control device 70 controls the low-temperature switching valve 39G so that one or a plurality of second heat dissipation terminals 39Z of the group set by the setting unit dissipate heat in response to an operation of instructing heat dissipation by the hot water supply remote controller 71.

[0085] Accordingly, when it is desired to use heating by the second heat dissipation terminal 39Z, the user can cause one second heat dissipation terminal 39Z included as the second heat dissipation terminal 39Z to be dissipated or cause a plurality of second heat dissipation terminals 39Z to be dissipated together within the group set by the setting unit by an operation of instructing heat dissipation by the hot water supply remote controller 71. Further, since any one of the plurality of groups can be set to cause the second heat dissipation terminal 39Z to dissipate heat in response to an operation of instructing heat dissipation, by changing and setting the group set by the setting unit to a different group, it is possible to change the combination of one or a plurality of second heat dissipation terminals 39Z desired by the user and cause them to dissipate heat. Therefore, the user can easily perform an operation of dissipating heat by the second heat dissipation terminal 39Z desired by the user.

[0086] The hot water supply remote controller 71 includes an up button 95B for setting a higher hot water supply temperature by the hot water supply circuit 2 and a down button 95A for setting a lower hot water supply temperature by the hot water supply circuit 2, and the setting unit can be changed from any one of the groups to a different group by at least one of the up button 95B and the down button 95A. By doing so, it is possible to change the group of one or more second heat dissipation terminals 39Z to dissipate heat by using the configuration of the existing hot water remote controller 71, so that the manufacturing cost can be reduced. In addition, since it is not necessary to add buttons to the hot water remote controller 71 for setting (the change of the group that is generally not frequently performed), the usability of the user can be improved.

[0087] A hot water and heating machine main body 1B including a hot water circuit 2, a heating circuit 3, a control device 70, a storage unit 73, and a setting unit, and a hot water remote controller 71, wherein the hot water and heating machine main body 1B includes a substrate 77 having a mode switch M1, and the setting unit can be set by operating the mode switch M1 and the hot water remote controller 71. If it is possible to change the group of one or more second heat dissipation terminals 39Z to dissipate heat only by the hot water remote controller 71, there is a concern that an error may occur or an unintended second heat dissipation terminal 39Z may dissipate heat when the user accidentally performs a group change operation. According to the above configuration, in addition to the hot water remote controller 71, the group can be set by operating the mode switch M1 of the substrate 77 (which is generally not set by the user), so that problems due to user's incorrect operation can be suppressed.

[0088] <Second Embodiment> The hot water and heating machine 1 according to the second embodiment is different only in that the "4. Configuration for dissipating heat of a plurality of second heat dissipation terminals 39Z by the hot water remote controller 71 (hot water and heating remote controller)" in the hot water and heating machine 1 of the first embodiment described above is changed to the following "6. Configuration for dissipating heat of the second heat dissipation terminal 39Z by the heating remote controller 71", and the contents of FIGS. 3 and 8 are changed to FIGS. 6 and 7, respectively, and the rest is the same as the first embodiment. For example, since the configuration of FIG. 1 is the same as that of the first embodiment, FIG. 1 will be referred to as appropriate in the following description.

[0089] The hot water heater 1 of the second embodiment includes a hot water heater main body 1B (Fig. 1), a heating remote controller 71 (Fig. 6), and a bath remote controller 72 (Fig. 1). The hot water heater main body 1B includes a hot water supply circuit 2, a heating circuit 3, a control device 70, a storage unit 73, and a wiring connection unit 74. The heating remote controller 71 is an example of a remote controller.

[0090] Fig. 6(A) is a front view of the heating remote controller 71 used in the second embodiment, showing a state where the remote controller display unit 97 is covered by the lid portion 92. Fig. 6(B) is an explanatory diagram exemplifying a state where the lid portion 92 is omitted in the heating remote controller 71, showing the remote controller display unit 97 and the like. As shown in Fig. 6(A), the heating remote controller 71 includes an operation switch 91. When the operation switch 91 is pressed, the operation lamp provided above the operation switch 91 lights up, and floor heating or the like is started. Although it will be described in detail later, when the operation switch 91 is pressed in the heating remote controller 71, the low-temperature switching valves 39G of one or more second heat dissipation terminals 39Z associated with this heating remote controller 71 are opened by the setting unit, and heating by the second heat dissipation terminals 39Z is started.

[0091] Also, as shown in Fig. 6(B), the heating remote controller 71 includes an up button 95A (▲ button) and a down button 95B (▼ button) used for adjusting the heating temperature. When the up button 95A (▲ button) is pressed, the set temperature rises by 1°C each time, and when the down button 95B (▼ button) is pressed, the set temperature drops by 1°C each time. The remote controller display unit 97 also displays the heating temperature, the heating time, and the like.

[0092] In the configuration according to the present embodiment, when a predetermined operation for starting floor heating is performed on the heating remote controller 71, the low-temperature switching valve 39G of No. 1 (the first system) operates to open correspondingly. For the low-temperature switching valves 39G of No. 2 to No. 6 (the second to sixth systems), when they are set in a group that operates in conjunction with the low-temperature switching valve 39G of No. 1 (the first system), all the low-temperature switching valves 39G of the systems that are interlocked with the low-temperature switching valve 39G of No. 1 (the first system) are opened. When they are not set in a group that operates in conjunction with the low-temperature switching valve 39G of No. 1 (the first system), they are controlled to close.

[0093] In the storage unit 73, information on whether to dissipate heat from one or more second heat dissipation terminals 39Z is stored as 10 (plural) groups (1 to A) of different combinations. In FIG. 7, symbols corresponding to the heat dissipation modes (opening / closing operations by the remote controller, interlocking opening / closing operations, etc.) of the six second heat dissipation terminals 39Z connected to each of the six low-temperature switching valves 39G are used for assignment. The information divided into 10 groups (1 to A) from 1 to A is stored in the storage unit 73 as switching valve batch control settings.

[0094] In Fig. 7, the low-temperature switching valve 39G that the control device 70 which has received a heating start signal (heat radiation instruction) from any one of the first heating remote controls opens is designated as "a". And the low-temperature switching valve 39G that opens in conjunction with the low-temperature switching valve 39G of "a" without the corresponding heating remote control connected is designated as "a'". Similarly, the low-temperature switching valve 39G associated with any second heating remote control (a remote control different from the heating remote control 71 having the same configuration as the heating remote control 71), and the low-temperature switching valve 39G that the control device 70 which has received a heating start signal from another heating remote control opens is designated as "b". And the low-temperature switching valve 39G that opens in conjunction with the low-temperature switching valve 39G of "b" without the corresponding heating remote control connected is designated as "b'". Similarly, the low-temperature switching valve 39G associated with any third heating remote control (a remote control different from the heating remote control 71 having the same configuration as the heating remote control 71), and the low-temperature switching valve 39G that the control device 70 which has received a heating start signal from the third heating remote control opens is designated as "c". And the low-temperature switching valve 39G that opens in conjunction with the low-temperature switching valve 39G of "c" without the corresponding heating remote control connected is designated as "c'". Also, the low-temperature switching valve 39G associated with any fourth heating remote control (a remote control different from the heating remote control 71 having the same configuration as the heating remote control 71), and the low-temperature switching valve 39G that the control device 70 which has received a heating start signal from the fourth heating remote control opens is designated as "d". The low-temperature switching valve 39G associated with any fifth heating remote control (a remote control different from the heating remote control 71 having the same configuration as the heating remote control 71), and the low-temperature switching valve 39G that the control device 70 which has received a heating start signal from the fifth heating remote control opens is designated as "e". The low-temperature switching valve 39G associated with any sixth heating remote control (a remote control different from the heating remote control 71 having the same configuration as the heating remote control 71), and the low-temperature switching valve 39G that the control device 70 which has received a heating start signal from the sixth heating remote control opens is designated as "f". In the example of Fig. 7, the low-temperature switching valves 39G designated as a, b, c, d, e, f are the first type of switching valves, and the low-temperature switching valves 39G designated as a', b', c' are the second type of switching valves.

[0095] FIG. 8 shows the wiring connection part 74 provided in the hot water heater body 1B. These are mounted on the substrate 77, and the circuit of the substrate 77 is connected to the control device 70. The substrate 77 includes connectors CN1 to CN6 and communication connectors C1 to C10. The connectors CN1 to CN6 are connected to the control device 70 via the circuit of the substrate 77. For example, the connector CN1 is the part that connects the control device 70 and the switching valve 39G of No. 1, and the wiring from the switching valve 39G of No. 1 is connected to the connector CN1. When a signal that becomes a condition for instructing the opening operation of the switching valve 39G of No. 1 is given from the heating remote controller 71 to the control device 70, the control device 70 gives a drive signal to the switching valve 39G of No. 1 via the connector CN1, and the drive signal causes the low-temperature switching valve 39G of No. 1 (the first system) to perform an opening operation. Also, when a stop signal that becomes a condition for instructing the closing operation of the switching valve 39G of No. 1 is given from the heating remote controller 71 to the control device 70, the control device 70 gives a stop signal to the switching valve 39G of No. 1 via the connector CN1, and the drive signal causes the low-temperature switching valve 39G of No. 1 (the first system) to perform a closing operation. The connectors CN2 to CN6 are the parts that connect the switching valves 39G of No. 2 to No. 6 and the control device 70. When a drive signal for instructing an opening operation or a stop signal for instructing a closing operation is given from the control device 70 to the switching valves 39G of No. 2 to No. 6 (the second to sixth systems), the switching valves 39G of No. 2 to No. 6 (the second to sixth systems) open and close accordingly. The switching valve 39G of No. 2 performs an opening operation or a closing operation according to the signal via the connector CN2, the switching valve 39G of No. 3 performs an opening operation or a closing operation according to the signal via the connector CN3, the switching valve 39G of No. 4 performs an opening operation or a closing operation according to the signal via the connector CN4, the switching valve 39G of No. 5 performs an opening operation or a closing operation according to the signal via the connector CN5, and the switching valve 39G of No. 6 performs an opening operation or a closing operation according to the signal via the connector CN6. Note that the wiring for the connectors CN1 to CN6 (the wiring connected to the switching valves 39G of No. 1 to No. 6) is attached, for example, during the manufacture of the hot water heater 1.

[0096] The communication connectors C1 to C10 correspond to an example of a signal connection part. For example, when connecting the communication lines S1 to S6 for a heating remote control for operating the second heat dissipation terminal 39Z, the communication connectors C1 to C6 are used. The communication connector C1 is a connector corresponding to the No. 1 switching valve 39G (first switching valve) connected to the connector CN1, and is a connector for communicating with a remote control (first remote control) for the second heat dissipation terminal 39Z that receives a heat medium through the switching valve 39G (first switching valve) via the communication line S1. In a representative example, the heating remote control 71 is the first remote control. The communication connector C2 is a connector corresponding to the No. 2 switching valve 39G (second switching valve) connected to the connector CN2, and is a connector for communicating with a heating remote control (second remote control) for the second heat dissipation terminal 39Z that receives a heat medium through the No. 2 switching valve 39G (second switching valve) via the communication line S2. The communication connector C3 is a connector corresponding to the No. 3 switching valve 39G (third switching valve) connected to the connector CN3, and is a connector for communicating with a heating remote control (third remote control) for the second heat dissipation terminal 39Z that receives a heat medium through the No. 3 switching valve 39G (third switching valve) via the communication line S3. The communication connector C4 is a connector corresponding to the No. 4 switching valve 39G (fourth switching valve) connected to the connector CN4, and is a connector for communicating with a heating remote control (fourth remote control) for the second heat dissipation terminal 39Z that receives a heat medium through the No. 4 switching valve 39G (fourth switching valve) via the communication line S4. The communication connector C5 is a connector corresponding to the No. 5 switching valve 39G (fifth switching valve) connected to the connector CN5, and is a connector for communicating with a heating remote control (fifth remote control) for the second heat dissipation terminal 39Z that receives a heat medium through the No. 5 switching valve 39G via the communication line S5. The communication connector C6 is a connector corresponding to the No. 6 switching valve 39G (sixth switching valve) connected to the connector CN6, and is a connector for communicating with a heating remote control (sixth remote control) for the second heat dissipation terminal 39Z that receives a heat medium through the No. 6 switching valve 39G (sixth switching valve) via the communication line S6. However, each of the communication connectors C1 to C6 is not necessarily used, and there may be cases where it is not used depending on the setting.That is, not all of the first to sixth remote controls are necessarily connected. There may be cases where only some of the remote controls are connected, or where none of the remote controls are connected. When the control device 70 opens and closes the switching valve 39G connected to each of the connectors CN1 to CN6, it does not necessarily perform the opening and closing control of the switching valve 39G based on a signal from the remote control corresponding to the switching valve 39G to be opened and closed. There may also be cases where the opening and closing control of the switching valve 39G is performed based on a signal from a remote control that does not correspond to the switching valve 39G to be opened and closed. For example, when controlling the switching valve 39G (second switching valve) of NO2. above, there may be a setting to perform the opening and closing control of the second switching valve based on a signal from the remote control (second remote control) electrically connected to the above-mentioned connector C2 corresponding to the switching valve 39G of NO2., but there may also be a setting to perform the opening and closing control of the second switching valve based on a signal from a remote control other than the above-mentioned second remote control.

[0097] Which communication lines S1 to S6 are connected to which communication connectors C1 to C6 can vary depending on the usage mode. For example, when set to the group "7" in FIG. 7, at a minimum, each communication line (each communication line connected to each heating remote control) only needs to be connected to communication connectors C1 and C6. In this case, the first remote control corresponding to the switching valve 39G (the first switching valve) of NO.1 is the first heating remote control, and the sixth remote control corresponding to the switching valve 39G (the sixth switching valve) of NO.6 is the second heating remote control. When the first remote control is the heating remote control 71, when an operation is performed to turn on the operation switch 91 in this first remote control (the first heating remote control) to instruct heating, a signal instructing heating is output from this first remote control (heating remote control 71) to the control device 70 via the connector C1. When the control device 70 receives a signal instructing heating from the first remote control (the first heating remote control) in the setting of "7" above, it performs control to open the low-temperature switching valves 39G of No.1 to No.5, which are "a" and "a'" in FIG. 7. As a result, the heat medium is supplied to the second heat dissipation terminal 39Z to which the second terminal flow path 38H is connected to the opened low-temperature switching valves 39G of No.1 to No.5, and floor heating of the first to fifth systems is performed. That is, the low-temperature switching valves 39G of No.1 to No.5 are collectively controlled according to the instruction from the first remote control (the first heating remote control). When the control device 70 receives a signal instructing heating from the sixth remote control (the second heating remote control) corresponding to the switching valve 39G of NO.6, which is "b" in the group "7" in FIG. 7, it opens the low-temperature switching valve 39G (the No.6 low-temperature switching valve 39G corresponding to "b") associated with the sixth remote control (the second heating remote control). Note that when the control device 70 receives an instruction to start driving from a remote control (for example, the heating remote control 71) electrically connected to any of the connectors C1 to C6 and performs an opening operation to open any of the low-temperature switching valves 39G, it drives the heating circuit 3 to heat the heat medium by the heating-side heat exchanger 32, and circulates the heated heat medium through the opened switching valve 39G to the second heat dissipation terminal 39Z.

[0098] The substrate 77 in Fig. 5 has various switches and a 7-segment display unit 78 mounted thereon. The various switches include test operation switches SW1 to SW5, a mode switch M1 (tactile switch), and setting change buttons M1A and M1B. The mode switch M1 is an example of the switches on the substrate 77. Specifically, the substrate 77 in Fig. 5 can have a layout as shown in Fig. 8. In the example of Fig. 8, the illustration of the switches SW1 to SW5 is omitted.

[0099] The change of the switching valve collective control setting (Fig. 3) is made as follows. For example, when the user performs a predetermined setting change start operation (for example, an operation of pressing the mode switch M1 a plurality of times (for example, 3 times)) on the substrate 77, the control device 70 switches its control mode to the setting change mode, and when a predetermined release operation is performed, it switches from the control mode to the normal mode (a mode in which no setting change is made). When an operation of inputting information for designating a group is performed while the control device 70 is in the setting change mode, the control device 70 sets the group at the time of the switching valve collective control setting and stores the number of the set group in the storage unit 73. The "operation of inputting information for designating a group" is not particularly limited. For example, when a pressing operation is performed on the first setting change button M1A or the second setting change button M1B in the setting change mode, the control device 70 causes the 7-segment display unit 78 on the substrate 77 to display a number. In this state where the number is displayed, each time the first setting change button M1A or the second setting change button M1B is pressed, the number displayed on the display unit 78 is switched. When a predetermined confirmation operation is performed in this switched state where a number is displayed on the 7-segment display unit 78, the control device 70 sets it to the group of the number displayed on the 7-segment display unit 78 at the time of the confirmation operation and stores the number of the set group in the storage unit 73. Note that the method of setting the group is not limited to this example, and the number of the group can be input by an input operation and can be confirmed by a confirmation operation. For example, each time the up button 95B or the down button 95A is pressed on the hot water supply remote controller 71 in the above setting change mode, the numbers of a plurality of groups (1 to A) may be switched and the group information may be displayed on the 7-segment display unit 78. And when a confirmation operation is performed such that the confirmation button 94B is pressed in a state where the number of any group is displayed, it may be set to the group of the number displayed at the time of the confirmation operation. In any case, when the group number of the switching valve collective control setting (Fig. 3) is set, the group number is stored in the storage unit 73, and in the setting unit, as if it is set to the group number stored in this way, the control of the low-temperature switching valve 39G corresponding to the group number is performed.In this embodiment, the control device 70, the mode switch M1 of the substrate 77, the setting change buttons M1A and M1B, the confirmation button 94B, the up button 95B and the down button 95A of the hot water supply remote control 71 correspond to an example of the setting unit.

[0100] <Other embodiments> The present invention is not limited to the embodiments described by the above description and drawings. For example, the features of the above-described or hereinafter-described embodiments can be combined in any combination within a non-contradictory range. Also, any feature of the above-described or hereinafter-described embodiments can be omitted if it is not explicitly specified as essential. Furthermore, the above-described embodiments may be modified as follows.

[0101] Although a configuration including the storage unit 73 is provided separately from the control device, it is not limited thereto, and a configuration in which the content of the storage unit 73 of the memory of the control device 70 is incorporated may be used. Although the system A surface setting and the system AB surface setting are enabled, it is not limited thereto, and other system settings may be enabled. Also, a configuration in which no system setting is performed may be used.

[0102] It may be possible to set or change the combination of information on whether to dissipate heat from the heat dissipation terminals in each group to an arbitrary combination by the mode switch M1 of the substrate 77, the up button 95B and the down button 95A of the hot water supply remote control 71, etc. In this case, the mode switch M1 of the substrate 77, the up button 95B and the down button 95A of the hot water supply remote control 71, etc. are an example of the setting unit. Also, it may be possible to increase or decrease the number of groups by the mode switch M1 of the substrate 77, the up button 95B and the down button 95A of the hot water supply remote control 71, etc.

[0103] In the second embodiment, only one type of group setting method was used, but a plurality of types of group setting methods may be prepared. For example, it may be possible to switch between grouping for setting the heating range in one area of a building and grouping for managing the heating ranges in a plurality of areas. For example, in the second embodiment, for simplicity of explanation, when a remote controller with one communication line and one operable heating area is set as one surface is connected, an example of switching the heating range operable by the remote controller was given. However, it may also be applicable to those in which a plurality of communication lines are provided and the operable heating areas are set as a plurality of surfaces. For example, it may be configured such that the heating of surface A and the heating of surface B can be switched by operating a heating remote controller, targeting a structure having surfaces A and B as heating areas. In this case, one or a plurality of partial low-temperature switching valves 39G may be grouped so that they are set as the heating of surface A, and the other one or a plurality of partial low-temperature switching valves 39G are set as the heating of surface B. As a specific example, when the group number is set to 7, the low-temperature switching valves 39G numbered 1 to 5 on the A surface side can be operated simultaneously by an operation on the A surface side, and the low-temperature switching valve numbered 6 can be operated by an operation on the B surface side. Also, when the group number is set to A, the low-temperature switching valves 39G numbered 1 to 3 on the A surface side can be operated simultaneously by an operation on the A surface side, and the low-temperature switching valves 39G numbered 4 to 6 on the B surface side can be operated simultaneously by an operation on the B surface side.

[0104] In the second embodiment, a configuration in which the operation of the heat dissipation instruction at the second heat dissipation terminal 39Z is performed by a heating remote controller was illustrated. However, the present invention is not limited to this, and it may be configured such that an operation of a heat dissipation instruction and the like is performed by a remote controller (such as a hot water supply remote controller) capable of both an operation of a hot water supply instruction in a hot water supply circuit and an operation of a heat dissipation instruction at the heat dissipation terminal 39Z. For example, the heating remote controller 71 in FIG. 6 or other heating remote controllers may be configured as a hot water supply and heating remote controller that can perform not only operations related to heating but also operations related to hot water supply.

[0105] It should be noted that the embodiments disclosed this time should be considered as illustrative in all respects and not restrictive. The scope of the present invention is not limited to the embodiments disclosed this time, and it is intended that all modifications within the scope indicated by the claims or within the scope equivalent to the claims be included.

Explanation of Signs

[0106] 1: Hot water supply and heating machine 1A: Container 1B: Hot water supply and heating machine main body 2: Hot water supply circuit 3: Heating circuit 4: Bath circuit 5A: Hot water supply combustion chamber 6A: Heating combustion chamber 7: Hot water supply side heat exchanger 7Z: Fin 8: Hot water supply side burner unit 8A: Hot water supply burner 9A: Burner block 9B: Burner block 9C: Burner block 10: Hot water outlet pipe 11: Water supply pipe 20: Fan 20A: Driving source 20B: Rotating body 32: Heating side heat exchanger (heat exchanger) 32A: First heating side heat exchanger 32B: Second heating side heat exchanger 33: Heating side burner unit 33A: Heating burner (burner) 34A: Burner block 34B: Burner block 35A: Inflow part 35B: First outflow part 35C: Second outflow part 36: Expansion tank 36C: Inlet part 36B: Outlet part 37: Heating circulation pump 38A: First internal flow path 38B: Second internal flow path 38C: Common return flow path 38K: Common forward flow path 38J: Branch section 39A: First heat dissipation terminal 39Z: Second heat dissipation terminal (heat dissipation terminal) 38G: First terminal flow path 38H: Second terminal flow path (terminal flow path) 39H: High-temperature switching valve 39G: Low-temperature switching valve (switching valve) 46: Bypass flow path 48: Heat medium circulation path 50: Bathtub heat exchanger 56: Supplementary heating branch section 70: Control device (control section) 71: Hot water supply remote controller (remote controller) 73: Memory section 94B: Confirmation button (setting section) 95A: Down button (setting section) 95B: Up button (setting section) M1: Mode switch (setting section) M1A: First setting change button (setting section) M1B: Second setting change button (setting section)

Claims

1. A hot water heater that supplies a heat medium to a plurality of heat dissipation terminals that have a plurality of terminal flow paths through which the heat medium flows and that dissipate the heat of the heat medium flowing through each of the terminal flow paths, and controls a plurality of switching valves that switch between a first state that permits the supply of the heat medium to each of the terminal flow paths and a second state that shuts off the supply, a hot water supply circuit that heats water supplied from the outside and supplies hot water, a burner that burns gas, a heat exchanger configured to heat the heat medium by the exhaust gas generated by the burner, and a heating circuit that supplies the heat medium heated by the heat exchanger to the terminal flow paths, a control unit that performs control according to a heat dissipation instruction from a remote controller that enables an operation to instruct heat dissipation of the heat dissipation terminal and controls the operation of the plurality of switching valves, a storage unit that stores information on whether or not one or more of the heat dissipation terminals dissipate heat as a plurality of groups with different combinations, a setting unit that can set any one of the plurality of groups stored in the storage unit, and is provided with, the control unit controls the plurality of switching valves so that one or more of the heat dissipation terminals in the group set by the setting unit dissipate heat in response to an operation of the heat dissipation instruction by the remote controller, An operation of controlling to supply the heat medium to a plurality of the heat dissipation terminals in response to an instruction from one remote controller connected to one signal connection part, and an operation of controlling to supply the heat medium to the heat dissipation terminal corresponding to each remote controller in response to each instruction from each remote controller connected to each of the plurality of signal connection parts, are enabled Hot water heater.

2. A hot water heater that supplies a heat medium to a plurality of heat dissipation terminals that have a plurality of terminal flow paths through which the heat medium flows and that dissipate the heat of the heat medium flowing through each of the terminal flow paths, and controls a plurality of switching valves that switch between a first state that permits the supply of the heat medium to each of the terminal flow paths and a second state that shuts off the supply, a hot water supply circuit that heats water supplied from the outside and supplies hot water, a burner that burns gas, a heat exchanger configured to heat the heat medium by the exhaust gas generated by the burner, and a heating circuit that supplies the heat medium heated by the heat exchanger to the terminal flow paths, a control unit that controls the operation of the plurality of switching valves, a remote controller that can perform an operation of a hot water supply instruction in the hot water supply circuit and an operation of a heat dissipation instruction in the heat dissipation terminal, A storage unit that stores information on whether or not to dissipate heat from one or more of the heat dissipation terminals as a plurality of groups with different combinations; A setting unit capable of setting any one of the plurality of groups stored in the storage unit; The control unit controls the plurality of switching valves so that one or more of the heat dissipation terminals of the group set by the setting unit dissipate heat in response to an operation of the heat dissipation instruction by the remote control; The heat dissipation terminal and the control unit are connectable so as to be able to communicate via a communication cable, and the heat medium is supplied to the heat dissipation terminal without the communication cable intervening between the control unit and the heat dissipation terminal without the communication cable intervening between any one of the heat dissipation terminals and the control unit. The heat dissipation instruction is enabled by the remote control. A water heater.

3. The remote control includes an up button for setting a higher hot water supply temperature by the hot water supply circuit and a down button for setting a lower hot water supply temperature by the hot water supply circuit; The setting unit can be changed from any one of the groups to a different group by at least one of the up button and the down button. The water heater according to claim 2.

4. A water heater including a water heater body including the hot water supply circuit, the heating circuit, the control unit, the storage unit, and the setting unit, and the remote control; The water heater body includes a substrate having a switch; The setting unit can be set by operating the switch and the remote control. The water heater according to claim 1 or claim 2.

5. The setting unit can set or change the combination of information on whether or not to dissipate heat from the heat dissipation terminals in the group to an arbitrary combination. The water heater according to claim 1 or claim 2.

Images