JP3773752B2 - Test run control method for hot water heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a test operation control method for a hot water heater used for trial operation control during a trial operation of the hot water heater.
[0002]
[Prior art]
Conventionally, as a hot water heating device, a heat source device provided with a heating circuit provided with a heat exchanger heated by a combustion burner and a circulation pump for circulating water in a hot water storage tank, and each room outside the heat source device What consists of several terminal radiators (for example, a floor heater and a bathroom heater) installed in is generally known. In this configuration, the plurality of terminal radiators are connected in parallel to the heating circuit via a terminal opening / closing valve constituted by a thermal valve and a circulation pipe, and the desired terminal opening / closing valve is opened to operate the heat. The hot water heated by the exchanger is individually circulated and supplied to the corresponding terminal radiator.
[0003]
And about said hot water heating apparatus, after installing a heat source machine and each terminal radiator, and performing piping construction, such as circulation piping, between the heat source machine and each terminal radiator, it is used (normal heating In general, a trial run is performed to determine whether or not the heating operation is normally performed by filling with water before being used for operation. That is, whether each terminal on-off valve normally opens and closes, whether the circulation pipe is normally connected, whether each terminal radiator is supplied with warm water at a predetermined temperature, and heating by the terminal radiator is normal Whether or not to be performed is checked as a test run.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional hot water heater, the operation of the circulation pump in the normal heating operation is extremely inefficient, and there is also a problem of increased noise.
[0005]
That is, in the above hot water heating apparatus, pressure loss (pressure loss) due to pipe resistance occurs when hot water is circulated and supplied to each terminal radiator, and this pressure loss mainly depends on whether the length of each circulation pipe is long or short. There is a difference for each terminal system. In addition, the installation position of each terminal radiator is different for each building in which the hot water heater is installed. Therefore, the length of the circulation pipe and the like are different for each installation target, and thus the pressure loss cannot be grasped uniformly.
[0006]
However, in the above-described conventional hot water heating apparatus, an AC pump using an AC condenser motor as a drive motor is normally used as a circulation pump, and therefore any terminal on-off valve in a plurality of terminal systems is opened. Even if it exists, there exists an inconvenience that the circulation operation of the hot water by a circulation pump is supposed regardless of the pressure loss or the circulation flow rate.
[0007]
For this reason, for example, when only one terminal on / off valve is opened, a circulation flow rate more than necessary is supplied to only one terminal system, and the circulation pump performs pump work more than necessary. Will end up. This is contrary to energy savings and causes noise generation due to an increase in the circulation flow rate.
[0008]
On the other hand, a DC pump capable of changing and adjusting the circulation flow rate is used as the circulation pump, and the operation of the circulation pump is performed so that the pressure difference in the piping between the circulation pump from each circulation radiator to each terminal radiator and the return side becomes constant. Although a method of performing control is also known, general-purpose hot water heating is lacking in durability and reliability in that it is necessary to continuously detect the pressure in both the forward and return pipes with a pressure sensor. It is inconvenient to spread as a device.
[0009]
That is, the DC pump can use a DC motor as a drive motor to vary the circulation flow rate by controlling the rotational speed, but in order to control the operation of the circulation pump as described above, When a pressure sensor is interposed in the pressure sensor, the pressure sensor is exposed to hot water having a relatively high temperature (for example, 80 ° C.) for a long time in a normal heating operation. For this reason, considerably high durability and reliability are required for the pressure sensor, and it is inconvenient to apply the operation control of the circulation pump as described above to a general-purpose hot water heater.
[0010]
The present invention has been made in view of such circumstances, and an object of the present invention is to ensure high reliability and durability by improving the operation efficiency of the circulation pump in normal heating operation and concomitant energy saving. An object of the present invention is to provide a test operation control method for a hot water heater that can be realized.
[0011]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention performs a trial operation to acquire an actual pressure loss characteristic for each terminal system in advance before subjecting to an actually installed hot water heating apparatus to a normal heating operation. Note that it is only necessary to use the acquired actual pressure loss characteristic in the operation control of the circulation pump in FIG.
[0012]
Specifically, the present invention provides at least one heat source device having a heating circuit in which at least a heating unit and a circulation pump are disposed, and connected to the heating circuit by an individual circulation pipe installed outside the heat source device. A hot water heating apparatus configured to circulate and supply hot water heated by the heating unit to the terminal radiator through the circulation pipe by the operation of the circulation pump. The following specific matters are intended for the trial operation control method of the hot water heating apparatus that is executed before the operation.
[0013]
That is, after the hot water heating apparatus is installed using a variable flow rate pump as the circulation pump, the operation of the circulation pump is controlled by the controller that performs trial operation control in a state where the heat source unit and the circulation pipe are filled with water. In this case, control is performed so that the circulation flow rate with respect to the flow rate gradually changes, and parameters relating to the piping resistance of the circulation piping with respect to the circulating flow rate that is sequentially changed are sequentially detected and stored in the controller as pressure loss characteristic data of the circulation piping. To do The main features It is a fixed matter.
[0014]
Here, as the “heating unit”, a combination of a combustion burner and a heat exchanger heated by the combustion heat of the combustion burner, or an electric heater or the like is used. Further, “so that the circulation flow rate gradually changes” may be either a continuous change or a step change.
[0015]
And as said "parameter regarding piping resistance", each circulation flow value changed sequentially and piping pressure value in circulation piping to the circulation flow of each circulation flow value are acquired one by one, and the circulation flow value and The relationship with the piping pressure value may be stored and held as “pressure loss characteristic data”. The “pressure loss characteristic data” may be a state of a collective data group of the circulation flow rate value and the piping pressure value, or preferably, the relationship between the circulation flow value and the pipe pressure value is based on the collective data group. A state converted into a higher-order approximate expression (pressure loss curve) may be used.
[0016]
the above By having the main specific matters After the installation work of the hot water heater and before being used, the actual pressure loss characteristic data of the circulation pipe leading to each terminal radiator is obtained by the trial operation control. That is, pressure loss characteristic data (for example, a pressure loss curve) under actual pipe length conditions and pipe resistance conditions when hot water is circulated and supplied to each terminal radiator in the normal heating operation later is obtained. That is, by controlling the operation of the circulation pump so that the discharge flow rate by the circulation pump gradually changes (for example, increase increase), the circulation flow rate for the circulation pipe gradually changes, and for each gradually changing circulation flow value. At this time, parameters related to the pipe resistance of the circulation pipe at that time are sequentially detected. That is, the relationship between the circulation flow values that are different from each other and the pipe resistance grasped by the above parameters under the circulation flow of each circulation flow value is sequentially acquired, and this relationship is sequentially stored in the controller as pressure loss characteristic data. Retained. As a result, the stored pressure loss characteristic data can be used as reference data for the operation control of the circulation pump during normal heating operation, and the operation amount corresponding to the pressure loss generated in the actual circulation piping is used. Efficiency and energy saving can be achieved by operating the circulation pump. Moreover, in this normal heating operation, it is only necessary to perform operation control of the circulation pump based on the pressure loss characteristic data stored in the controller without requiring detection from a pressure sensor or the like. High durability and reliability can be realized even for a long time operation.
[0017]
the above Main specific items In the method of “sequentially obtaining each circulation flow value that is sequentially changed and the pipe pressure value in the circulation pipe with respect to the circulation flow of each circulation flow value”, the circulation flow value and the pipe pressure value are, for example, Both may be detected directly using the flow rate detection means and pressure detection means, but either one of the values is directly detected and the other value is calculated from the related parameters as follows, or the relationship between the two values is determined from the related parameters. You may make it index.
[0018]
First, a DC motor is used as a drive motor for the circulation pump, and either the circulating flow value or the piping pressure value is directly detected by the detection means, and the other value is indirectly detected. As the detection, there is a method in which the other value is obtained by calculation from the pump characteristics of the circulation pump stored in advance in the controller based on the voltage applied to the DC motor in the operation control of the circulation pump. . In other words, since the pump rotation speed is changed by changing the applied voltage value and the discharge flow rate is also changed, the circulation flow rate value and the pump characteristics that define the relationship between the rotation speed and the discharge flow rate or the lift (pressure) The other value can be acquired by one value detected directly from the pipe pressure value. In this case, only one of the flow rate detection means and the pressure detection means needs to be installed, and the other can be omitted.
[0019]
Secondly, when one or both of a hot water supply circuit and a bath pouring circuit is used as the heat source device, the circulating flow rate value is detected by one of the hot water supply circuit and the bath pouring circuit. There is a method in which the means is temporarily used and detected only during a test run. For example, a connection pipe that is used only during trial operation may be prepared, and a bypass pipe that passes through the flow rate detection means may be temporarily connected from a part of the heating pipe via a three-way switching valve or the like. In this case, it is not necessary to specially install the flow rate detecting means necessary only during the trial operation for acquiring the pressure loss characteristic data, and the existing flow rate detecting means can be effectively used.
[0020]
Third, as a heat source device, a pair of temperature detection means on the forward side and the return side for detecting the temperature of the forward side hot water and the return side hot water circulated between the heating circuit and the terminal radiator, When a device having a heating amount detecting means for detecting the heating amount is used, the circulating flow rate value is determined by the temperature difference between both the forward and return warm water detected by the pair of temperature detecting means and the heating amount. There is a method of obtaining by calculation from the heating amount detected by the detecting means. That is, it can be obtained because the amount of heating necessary for increasing the unit flow rate of hot water by 1 ° C. is known by tests, etc. In this case, such as the temperature detection means originally provided in the hot water heater As a result of effective use, installation of a new flow rate detection means can be omitted in the same manner as described above.
[0021]
Fourthly, in the case where a heat source device provided with a bath reheating circuit is used, the pipe pressure value is detected temporarily using the pressure detecting means of the bath reheating circuit only during a trial operation. The method to make is mentioned. For example, the pressure detection means may be communicated with a part of the heating circuit so as to be able to switch communication, and the pressure detection means and the heating circuit may be communicated with each other only during a trial operation. In this case, it is not necessary to specially install the pressure detection means required only during the trial operation for acquiring the pressure loss characteristic data, and the existing pressure detection means can be effectively used.
[0022]
Fifth, when a DC motor is used as a motor for driving the circulation pump, and a rotational speed detecting means for detecting the rotational speed of the DC motor and a current value detecting means for detecting a current value flowing through the DC motor are provided. The pump characteristic table that defines the relationship between the pump work of the circulating pump and the pump characteristics defined by the pump flow rate and discharge pressure of the circulating pump is stored in advance in the controller, and the rotational speed detection is performed. The pump work amount of the circulating pump is calculated from the rotation speed detection value by the means and the current detection value by the current value detection means, and the circulation flow value and the piping pressure value are calculated from the pump characteristic table based on the work calculation value. There is a method of acquiring the relationship. In other words, the fluctuation in the rotational speed has a certain relationship with the fluctuation in the discharge flow rate, while the fluctuation in the current value flowing through the DC motor has a certain relation with the fluctuation in the load (pressure) acting on the pump during operation. The relationship between the circulation flow rate value and the piping pressure value during the operation control of the circulation pump can be acquired. In this case, both the pressure detection means and the flow rate detection means for acquiring the pressure loss characteristic data by trial operation can be eliminated.
[0023]
In the case of the fifth method, correction processing for the pump characteristic table stored and set prior to the start of the trial operation control may be performed. That is, as a correction process of the above pump characteristic table, the circulation pump is operated after the circulation piping to all the terminal radiators is closed so that only the hot water circulation in the heating circuit in the heat source machine is operated, and the rotation speed is detected. The rotation speed detection value by the means and the current detection value by the current value detection means are acquired, and the pump characteristic table is corrected so as to match the pump work defined by the rotation speed detection value and the current detection value. That's fine. In this case, variations caused by manufacturing errors of the circulation pump are corrected in advance, and subsequent pressure loss characteristic data can be obtained more accurately. The “correction” may be performed by offsetting the pump characteristic table by a difference from the pump work amount or by multiplying the pump characteristic table by a ratio corresponding to the difference.
[0024]
Also, above Main specific items When a large number of terminal radiators are installed in parallel, the terminal on / off valves are repeatedly opened and closed for each of the terminal systems consisting of the terminal radiator, circulation piping and terminal on / off valves. The pressure loss characteristic data may be stored and retained, but by adding the following specific items, the trial run control time can be greatly shortened even when a large number of terminal radiators are installed. It becomes possible.
[0025]
That is, a terminal radiator, a circulation pipe that individually circulates warm water in each terminal radiator, and a terminal opening / closing valve that is interposed in the circulation pipe and switches the supply of warm water to the terminal radiator For a hot water heating apparatus having two or more terminal systems consisting of combinations, first, the terminal on / off valve of any one terminal system is opened, hot water is circulated through the terminal system, and pressure loss characteristic data in this case is stored and retained. After that, the process of increasing the number of terminal systems that circulate hot water by opening any new terminal on / off valves while keeping the terminal on / off valves up to the previous time, and storing and holding the pressure loss characteristic data in that case is performed on all terminal systems. On the other hand, it may be repeated sequentially until the storage and holding of the pressure loss characteristic data when the hot water is circulated simultaneously is completed. In this case, it is not necessary to repeat the opening / closing operation for each of the terminal opening / closing valves one by one, and it is only necessary to open the next terminal opening / closing valve with the current terminal opening / closing valve open. Since it is not necessary to wait for the closing operation of the terminal opening / closing valve this time before, the trial run time can be shortened. In particular, when the terminal opening / closing valve is constituted by, for example, a thermally operated valve that takes time for both opening and closing operations, significant time reduction can be obtained.
[0026]
Even if all the terminal opening / closing valves are sequentially opened without performing the closing operation individually as described above, the pressure loss characteristic data can be individually acquired for all the terminal systems by performing the following processing. That is, the pressure loss characteristic data stored and held this time and the pressure loss characteristic data stored and held last time are compared and calculated so that the pressure loss characteristic data for the terminal system increased this time is sequentially obtained and stored in the controller. do it. Further, not only individual terminal systems but also pressure loss characteristic data for any combination of two or more terminal systems can be acquired by performing the following processing. That is, based on the mutual comparison of various pressure loss characteristic data for any one terminal system and any two or more terminal systems, pressure loss characteristic data for a combination of any two or more terminal systems is obtained by calculation, and the controller It is sufficient to store the information in the memory.
[0027]
Once the acquisition and storage of pressure loss characteristic data for all terminal systems and any combination of two or more terminal systems are completed as described above, all terminal on-off valves are closed simultaneously and simultaneously as follows. Even if it operates, if there is a terminal on / off valve with an abnormal closing operation, it is possible to identify which terminal on / off valve has an abnormal closing operation. That is, after completing the storage and holding of the pressure loss characteristic data for all terminal systems, all the terminal open / close valves of all the terminal systems are closed at the same time, and after a set time has elapsed since the start of the closing operation, Is larger than the circulating flow rate value in the heating circuit in the heat source unit, the non-closed terminal system is determined by comparing the flow rate detection value with various pressure loss characteristic data already stored. Good. Then, it is only necessary to notify or display the determined terminal opening / closing valve of the abnormal closing operation to the operator by notifying means or the like connected to the controller.
[0028]
In addition, after the acquisition and storage of the individual pressure loss characteristic data for all terminal systems is completed, the following processing is performed. It is possible to preliminarily identify the presence of the terminal radiator that will not be able to perform its function and notify the operator, and take measures to correct the imbalance. That is, the notification means is connected to the controller, and the pressure loss characteristic data having a variation more than the set amount than the average value of the total pressure loss characteristic data is extracted from the individual pressure loss characteristic data for all the terminal systems, and extracted. The terminal system corresponding to the pressure loss characteristic data may be notified or displayed by the notification means.
[0029]
【The invention's effect】
As described above, claim 1 To any one of claims 8 According to the test operation control method of the hot water heating apparatus described, before the hot water heating apparatus is installed and used, the actual pressure loss characteristic data about the actual circulation piping leading to each terminal radiator is obtained. It can be obtained in advance. As a result, the pressure loss characteristic data can be used as reference data for the operation control of the circulation pump during normal heating operation, and the circulation pump is operated with an operation amount corresponding to the pressure loss generated in the actual circulation pipe. By operating, efficiency and energy saving can be achieved. Moreover, in this normal heating operation, it is only necessary to perform operation control of the circulation pump based on the pressure loss characteristic data stored in the controller without requiring detection from a pressure sensor or the like. High durability and reliability can be realized even for a long time operation.
[0030]
Claim 1 To claims 2 According to any one of the above, the pressure loss characteristic data can be obtained by installing only one of the flow rate detection means and the pressure detection means, and the installation of the other detection means is unnecessary or is already installed in another circuit. It can be shared with the installed one.
[0031]
Claim 3 Therefore, the acquisition of the pressure loss characteristic data can eliminate the need to install both the flow rate detecting means and the pressure detecting means, and the flow rate can be corrected by performing the correction process of the pump characteristic table before starting the trial operation control. Even without using both the detection means and the pressure detection means, the pressure loss characteristic data can be obtained with higher accuracy.
[0032]
Claim 4 According to this, even when a large number of terminal radiators are installed, the trial run control time can be greatly shortened. That is, it is not necessary to repeat the opening / closing operation for each terminal opening / closing valve one by one, and it is not necessary to wait for the closing operation of the current terminal opening / closing valve before opening the next terminal opening / closing valve, thereby shortening the trial run time. Can do. In particular, in a hot water heater, since the terminal on-off valve is usually constituted by a thermally operated valve that takes time to open and close, a significant reduction in time can be obtained.
[0033]
Claim 5 According to the above, even if the pressure loss characteristic data is stored and retained in a state where the opening operations are sequentially stacked without sequentially performing the closing operation for all the terminal opening / closing valves as described above, the pressure loss characteristic data for all the terminal systems individually. Will be able to get.
[0034]
Claim 6 Accordingly, it is possible to acquire pressure loss characteristic data not only for individual terminal systems but also for a combination of two or more arbitrary terminal systems.
[0035]
Claim 7 According to the present invention, even if all the terminal on / off valves are closed simultaneously and simultaneously, if there is a terminal on / off valve with an abnormal closing operation, it is possible to reliably identify which terminal on / off valve has the abnormal closing operation. It becomes like this.
[0036]
Claim 8 According to the present invention, it is possible to specify in advance the presence of a terminal radiator that will not be able to perform the heating function due to poor circulation when simultaneous heating operation is performed due to the occurrence of imbalance in the pressure loss balance, It becomes possible to notify. As a result, it is possible to perform in advance a countermeasure for the operator to correct the imbalance in the pressure loss balance.
[0037]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0038]
FIG. 1 shows an example of a composite heat source machine to which an embodiment of the present invention is applied. The composite heat source machine 20 has functions of hot water supply, heating, and bathing. In the figure, 21 is a hot water supply circuit, 22 is a heating circuit, 23 is a reheating circuit, and 24 is a controller for controlling the operation of each of these circuits. This combined heat source machine 20 is a type that heats up the hot water of the reheating circuit 23 by exchanging heat between the hot water of the heating circuit 22 and the hot water of the reheating circuit 23 when reheating the bath. belongs to. Hereinafter, each main component 21, 22, 23, 24 of the composite heat source machine 20 will be described.
[0039]
(Hot water supply circuit 21)
The hot water supply circuit 21 includes a hot water supply casing (can) 32 that forms a hot water supply combustion chamber 31, a hot water supply heat exchanger 33 that is disposed above the combustion chamber 31 in the casing 32, and this heat exchange. A hot water supply burner 34 disposed below the heater 33, a hot water supply fuel supply system 35 for supplying fuel gas to the burner 34, a blower fan 36 for supplying combustion air to the burner 34, and the hot water supply The hot water supply water intake pipe 37 and the hot water supply hot water discharge pipe 38 connected to the heat exchanger 33 are provided.
[0040]
The hot water supply fuel supply system 35 includes a hot water supply gas pipe 40 connecting the downstream side of the solenoid valve 39 for opening and closing common to a heating fuel supply system 55 described later and the hot water supply burner 34, and the hot water supply gas pipe. 40, and a hot water proportional solenoid valve 41 for changing and adjusting the amount of fuel gas supplied to the burner 34.
[0041]
Then, water such as tap water supplied to the hot water supply heat exchanger 33 through the water intake pipe 37 is heated by the flame of the hot water supply burner 34 while passing through the hot water supply heat exchanger 33, and the hot water discharge pipe 38. The hot water is supplied to a predetermined hot water supply location such as a curan 44 such as a kitchen or the reheating circuit 23. The hot water supply pipe 37 is provided with a water amount sensor 45 for detecting the flow rate of incoming water to the hot water supply heat exchanger 33 and a water input thermistor 46, and the hot water supply hot water pipe 38 is provided with a hot water thermistor 47. is set up.
[0042]
(Heating circuit 22)
The heating circuit 22 includes a heating casing (can) 52 that forms a heating combustion chamber 51, a heating heat exchanger 53 and a heating burner 54 that constitute a heating unit, and the burner 54 that has the same fuel as described above. A heating fuel supply system 55 that supplies gas, a heating blower fan 56 that supplies combustion air to the burner 54, and a heating circulation passage 57 that passes through the heating heat exchanger 53 are provided. .
[0043]
The heating fuel supply system 55 includes a heating gas pipe 60 connecting the downstream side of the common opening / closing solenoid valve 39 and the heating burner 54, and the heating gas pipe 60 interposed between the heating gas pipe 60 and the burner. And a heating electromagnetic proportional valve 61 that changes and adjusts the amount of fuel gas supplied to 54.
[0044]
The heating circulation channel 57 includes an expansion tank 64 serving as a hot water storage tank interposed in the middle, a heating water inlet pipe 65 extending from the expansion tank 64 to the heating heat exchanger 53, and heat exchange for the heating. A heating hot water discharge pipe 66 extending from the vessel 53 to the expansion tank 64 is provided. The expansion tank 64 is connected to the downstream end of a heating water injection pipe 68 branched from the hot water supply pipe 37 and provided with a water injection valve and a replenishing water solenoid valve. Water supply when the water level in 64 is lowered is performed based on detection signals from the high water level switch 641 (see FIG. 2) and the low water level switch 642 (see FIG. 2). The heating inlet pipe 65 is provided with a heating circulation pump 67 for circulating the hot water in the expansion tank 64 through the heating circulation passage 57 and the like. Are disposed so as to pass through a reheating heat exchanger 81 described later.
[0045]
The heating circulation pump 67 is constituted by a DC pump using a DC (direct current) motor as a driving motor, and the rotation speed of the pump blade (invera) is controlled by changing the applied voltage command value by PWM (Pulse Width Modulation) control. Change control can be performed. The discharge flow rate capacity is changed by the change control of the rotation speed. In addition, a rotation speed detection means for detecting the rotation speed and a current value detection means for detecting a current value flowing under a voltage applied by the applied voltage command are provided, and the detected values are output to the controller 24, respectively. It is supposed to be.
[0046]
An upstream end of the low-temperature heating pipe 69 is branched and connected to an intermediate position of the heating water intake pipe 65, and a plurality of (six in the illustrated example) each constituted by a thermal valve is connected to the downstream end of the low-temperature heating pipe 69. 6P header 72 having terminal open / close valves 721 to 726 (see FIG. 2). And as shown in FIG. 2, the upstream end of the circulation piping 11-14 which goes to several low temperature terminal radiators A1-A4 with respect to each terminal on-off valve 721-726 of the said 6P header 72 is connected separately, and the said low temperature The low-temperature water from the heating pipe 69 is branched in parallel to the terminal radiators A1 to A4. Each of the low-temperature terminal radiators A1 to A4 is composed of a floor heating radiator panel or a radiator tube installed in each room of the building, and is relatively low in temperature (for example, 60 ° C.) during normal heating operation. Of hot water is circulated. In the example of FIG. 2, the four terminal radiators A1 to A4 are individually connected to the four terminal opening / closing valves 721 to 724, and the other two terminal opening / closing valves 725 and 726 are not connected. Shows the case.
[0047]
The upstream end of the high-temperature heating pipe 70 is branchedly connected to the heating outlet pipe 66 at an intermediate position between the heating heat exchanger 53 and the reheating heat exchanger 81, and the downstream side of the high-temperature heating pipe 70. Is provided with a downstream connection end 701. The downstream connection end 701 is connected to the upstream end of the circulation pipe 15 toward one or more (two examples are shown in FIG. 2) high-temperature terminal radiators A5 and A6. . The circulation pipe 15 is branched into two branch circulation pipes 15a and 15b in the middle of the circulation pipe 15 and passes through the high-temperature terminal radiators A5 and A6 via terminal open / close valves 151 and 152 each constituted by a thermal valve. It is like that. The high-temperature terminal radiators A5 and A6 are constituted by, for example, a bathroom dryer, an indoor heater, or the like, and hot water having a relatively high temperature (for example, 80 ° C.) is circulated and supplied during normal heating operation. ing.
[0048]
The upstream end of the heating bypass pipe 75 is branched from the high temperature heating pipe 70 in front of the downstream connection end 701, and the downstream end of the heating bypass pipe 75 is connected to the heating return pipe 71 in front of the expansion tank 64. Connected to join. The downstream ends of the circulation pipes 11 to 14, 15a, and 15b that have passed through the low-temperature and high-temperature terminal radiators A1 to A6 are connected to the upstream connection end 711 of the heating return pipe 71. The downstream end of the heating return pipe 71 is joined and connected to the heating tap pipe 66 at a position before the expansion tank 64.
[0049]
Terminal controllers 241 to 246 are individually arranged in the terminal radiators A1 to A6, and the terminal controllers 241 to 246 communicate with the controller 24 on the heat source unit 20 side by wireless or wired. It is possible. As a result, during the test operation, the terminal controllers 241 to 246 output the statuses of the terminal radiators A1 to A6 to the heat source unit-side controller 24, and the opening / closing operation commands of the terminal switching valves 721 to 724, 151, and 152. Can be output from each of the terminal controllers 241 to 246 or from the heat source unit controller 24.
[0050]
Terminals installed in parallel outside the heat source unit 20 constitute one terminal system 1 with the terminal opening / closing valve 721, the circulation pipe 11 and the terminal radiator A1, and the terminal opening / closing valve 722, the circulation pipe 12 and the terminal. Each terminal on-off valve 723,724,151,152, each circulation piping 13,14,15 and 15a, 15 and 15b, and each terminal radiator A3 are comprised similarly with the radiator A2 and the one terminal system | strain 2. Each terminal system 3-6 is comprised by each combination with -A6.
[0051]
Returning to FIG. 1, the outlet temperature of the outgoing hot water from the heat exchanger 53 is detected in the heating outlet 66 from the heating heat exchanger 53 to the branch to the upstream end of the high-temperature heating pipe 70. A forward thermistor 73 is installed as a forward side temperature detecting means, and a return thermistor 74 for detecting the temperature of the return side hot water is installed in the heating return pipe 71.
[0052]
Further, a bath thermal valve 76 is interposed downstream of the reheating heat exchanger 81 of the heating hot water discharge pipe 66, and the heating hot water valve 76 is closed to close the heating hot water discharge pipe 66. Hot water flows only through the high-temperature heating pipe 70 and flows through the circulation pipe 15 when one or both of the terminal on-off valves 151 and 152 are open, and flows through the heating bypass pipe 75 when both are closed. become.
[0053]
(Turning circuit 23)
The reheating circuit 23 includes the reheating heat exchanger 81, a recirculation circulation passage 82 that passes through the heat exchanger 81, a recirculation circulation pump 83 that circulates hot water through the circulation passage 82, A hot water supply pipe 84 that branches off from the hot water supply hot water supply pipe 38 and pours hot water into the circulation channel 82 is provided.
[0054]
The recirculation circulation channel 82 includes a bath return pipe 85 extending from a bathtub (not shown) to the reheating heat exchanger 81 and a bath return pipe 86 extending from the reheating heat exchanger 81 to the bathtub. Has been. The bath return pipe 85 is provided with the circulation pump 83 and connected to the downstream end of the pouring pipe 84. The pouring pipe 84 is provided with a hot water amount sensor 87 for detecting the flow rate of the pouring pipe 84 and an electromagnetic on-off valve 88. In addition, the bath return pipe 85 is provided with a pressure sensor 89 for detecting the water level in the bathtub.
[0055]
(Controller 24)
The controller 24 controls the operation of each of the heat exchange circuits 21, 22, 23 in response to various operation commands based on the input operation of the user or the test run operator from the remote controller 240 constituting the notification means. And a memory and the like. The controller 24 includes a portion for controlling normal operation such as a hot water supply control means, a bath reheating control means and a heating control means corresponding to the circuits 21, 22, and 23, a storage means, and the circuits 21 and 22 respectively. , 23 and the trial run control means for controlling the trial run of each of the terminal radiators A1 to A6 connected to the heating circuit 22.
[0056]
(Test run control)
On the premise of the above configuration, the pressure sensor 7 (see FIG. 2) as pressure detection means for detecting the pressure in the pipeline with respect to the discharge side pipeline of the circulation pump 67 of the heating circuit 22 is used only for trial operation control. The trial run control in the case of being arranged for this purpose will be described below. In the following description, test operation control for the hot water heating system including the heating circuit 22 and the terminal systems 1 to 6 will be described.
[0057]
This trial operation control is performed after the installation of the heat source device 20, the installation of the terminal radiators A1 to A6 in each room, and the various works and the wiring work of the piping and connection of the circulation pipes 11 to 15 are completed. In this state, all the terminal opening / closing valves 721-726, 151, 152, the thermal valve 76 for bath, etc. are all closed. In addition, a predetermined pump characteristic table for the circulation pump 67 is stored in advance in the storage means of the controller 24.
[0058]
This trial run control is started, for example, by turning on an automatic trial run switch disposed on the remote controller 240. As shown in FIG. 3, after performing the water filling process SUB1, the pump characteristic value correction process SUB2 for the circulation pump 67 is performed. I do. Next, the terminal radiator Aj to be checked, that is, the terminal system is selected (step S1). This selection is done by selecting an arbitrary terminal system one by one from the six terminal systems 1 to 6 and checking the opening of the terminal on / off valve (shown as “thermal valve” in FIG. 3) of the newly selected terminal system. After performing the processing SUB3, the pressure loss check processing SUB4 and the normal operation check processing SUB5 of the newly selected terminal system, the terminal system is selected one by one until all of the six terminal systems 1 to 6 are selected, and each of the above processes SUB3 to SUB5 are repeated (refer to the case of “NO” in step S2). And if each process SUB3-5 about all the terminal systems 1-6 is complete | finished (in step S2, j = jmax = 6; in the case of "YES"), all the terminal opening-and-closing valves 721-opened until then 724, 151, 152 are closed simultaneously and simultaneously (step S3), and the closing check processing SUB6 of all the terminal on-off valves 721-724, 151, 152 and the pressure loss variation checking processing SUB7 of each terminal system 1-6 are performed. To complete the trial run control. Hereafter, each said process is demonstrated in detail. In addition, by the ON operation of the automatic test operation switch, the number of terminal radiators that are currently connected in response to output signals from the installed terminal controllers 241 to 246, which terminal on-off valve is connected, and Whether or not normal communication is possible is confirmed.
[0059]
In the water filling process SUB1, after pouring water into the expansion tank 64 through the heating water injection pipe 68, all of the low temperature terminal opening / closing valves 721 to 724 and the high temperature terminal opening / closing valves 151, 152 are opened. Next, the circulation pump 67 is operated to fill the heat source device 20 side and all of the terminal radiators A1 to A6 outside the heat source device 20, and after the water filling is completed, all the terminal opening / closing valves 721 to 724, 151, 152 is closed to close again.
[0060]
In the pump characteristic value correction processing SUB2, the operation of the circulation pump 67 is continued while all the terminal on-off valves 721 to 724, 151, 152 are closed, so that the water flow is changed in the heating circuit 22 of the heat source unit 20. Only in circulation. That is, the water from the expansion tank 64 is sucked and discharged by the circulation pump 67, and the discharged water passes through the water inlet pipe 65, the heat exchanger 53, the high temperature heating pipe 70, the bypass pipe 75 and the return pipe 71. The internal circulation state is set such that the tank 64 is returned to the tank 64. Since the bypass pipe 75 is incorporated in advance on the heat source unit 20 side, the piping specifications and the flow rate (bypass flow rate) with respect to a predetermined pump output are also known by performing tests and the like in advance.
[0061]
In the above-mentioned internal circulation state, a predetermined applied voltage command value is output to the circulating pump 67 and is operated with a pump work (pump capacity) corresponding to a pump characteristic table (see the one-dot chain line in FIG. 4) that is set in advance. Let Next, in this operating state, the rotational speed detection value of the circulation pump 67 by the rotational speed detection means and the current detection value by the current value detection means are detected, and the pump work defined by these rotational speed detection value and current detection value is detected. The pump characteristic table is corrected to match the quantity. This correction is performed by offsetting the difference or multiplying by a ratio that can eliminate the difference. This correction processing SUB2 may be performed a plurality of times corresponding to the plurality of pump works if the stored pump characteristic table is a plurality of pump work tables corresponding to the plurality of pump works. Thereafter, the corrected pump characteristic table (see the solid line in FIG. 4) is used. By the correction process SUB2 described above, variations caused by manufacturing errors of the circulation pump 67 and the like are corrected in advance.
[0062]
In the terminal opening / closing valve opening check process SUB3 of the newly selected terminal, as shown in FIG. 5, a timer start (step S11) and a constant rotation speed continuous control (step S12) for maintaining the rotation speed of the circulation pump 67 at a constant rotation speed are performed. And an opening operation signal is output to the newly selected terminal opening / closing valve (for example, 721) to start the opening operation (step S13).
[0063]
If the opened terminal opening / closing valve 721 is normal, the opening degree is initially only slightly opened from the fully closed state due to the heating delay as shown in FIG. 6, but when the heating is sufficient, the opening degree suddenly increases. Close to full opening. Due to the rapid increase in the opening degree, the flow rate of the water circulated and supplied from the low temperature heating pipe 69 to the circulation pipe 11 also increases rapidly. As a result, the resistance based on the length of the circulation pipe 11 and the presence of the terminal radiator A1 is newly received, and the pressure detection value in the pressure sensor 7 is suddenly changed, or the circulation pump 67 which is affected by these fluctuations. Is maintained at a constant rotational speed, the applied voltage value is changed, or the current value varies with the change of the applied voltage value.
[0064]
Therefore, any one of a current value, a voltage value, a pressure value, and a flow rate value (for example, a pressure detection value by the pressure sensor 7) is detected and monitored, and the detection value corresponds to a predetermined value corresponding to the sudden increase in the opening degree. Until the determination time by the timer elapses (steps S14 and S15). If the change occurs, it is determined that the opening is normally performed, and the remote control 240 has, for example, a liquid crystal display unit. On the other hand, “open check OK” is displayed (steps S14 and S16). If no change occurs even after a predetermined determination time (for example, 12 minutes), it is determined that there is an abnormality in the opening operation of the terminal on-off valve 721, and a “thermal valve opening error” is given to the liquid crystal display unit. Is displayed (steps S15 and S17), and a closing operation signal is output to the terminal opening / closing valve 721 to make a jump to step S2.
[0065]
With the above-described open check process SUB3, in the prior art, the terminal open / close valve that has been opened is not fully waited until the temperature difference between the heated water return side and the return side becomes stable. Therefore, the time required for the open check can be shortened in that the normal open operation can be determined without waiting for the full open state. In particular, when a plurality or a large number of terminal opening / closing valves are installed, a significant reduction in time can be obtained. As a result, as shown in FIG. 6, the opening operation of the next terminal on / off valve can be started before the current terminal on / off valve is fully opened, and the current terminal on / off valve is fully opened. The next process (for example, the pressure loss check process SUB4) can be started from the position immediately before becoming. As a result, the overall time required for the trial run can be greatly shortened.
[0066]
In the pressure loss check process SUB4, as shown in FIG. 7, first, the rotational speed of the circulation pump 67 (indicated as “heating pump” in FIG. 6) is increased from the initial rotational speed (for example, 2000 rpm) to a predetermined rotational speed (for example, 100 rpm). ) Step by step (step S21). For each speed increase step of the rotational speed, the relationship between the pressure value P and the flow rate value Q (PQ relationship) at that time is sequentially acquired and stored in the storage means of the controller 24 (step S22). At this time, the pressure value P is directly detected from the pressure sensor 7, while the flow rate value Q may be obtained by calculating from the control rotation speed and the current detection value at that time. Next, the pressure loss curve for the terminal system (for example, terminal system 1; terminal radiator A1) to be circulated and supplied this time is stored and the calculated pressure loss curve is stored in the storage means (step S23). That is, based on the set of values of P and Q acquired in step S22, a relational expression for both values is obtained by a high-order approximation, and this is obtained as a pressure loss curve (pressure loss characteristic) for the terminal system 1 (A1). Data) in the storage means. Specifically, when the combinations of both values of P and Q acquired in step S22 are plotted in order on the orthogonal coordinates of the pressure P and the external flow rate Q as shown in FIG. 8 (see the black circles in the figure), The pressure loss curve is obtained by an approximate curve that connects in order.
[0067]
When the terminal system 1 (A1) is selected in step S1, SUB3 to 5 are performed for the terminal system 1, and when the process returns to step S1 again through step S2, the next opening operation is performed to The terminal system that circulates and supplies is selected. Here, assuming that the terminal system 6 (A6) is selected as the next time, the pressure loss check processing of the SUB 4 is performed in the same manner as described above in a state where the terminal opening / closing valves 721 and 152 are both opened via the SUB 3. . In this case, as shown in FIG. 9, in addition to the previous pressure loss curve of the terminal system 1 (A1) alone, a combined pressure loss curve of the two terminal systems 1, 6 (A1, A6) is obtained. The pressure loss curve for the combination of the two terminal systems 1, 6 (A1, A6) is stored and held. In this way, pressure loss curves in the case of combining a plurality of terminal systems such as three terminal systems and four terminal systems are sequentially obtained and stored.
[0068]
At that time, a pressure loss curve in the case of a single terminal system newly selected by comparison between the pressure loss curve obtained this time and the pressure loss curve obtained last time is sequentially acquired and stored (step S24). For example, if the combined pressure loss curve of the above two terminal systems 1, 6 (A1, A6) is obtained, the difference between the combined pressure loss curve and the pressure loss curve of the terminal system 1 (A1) alone obtained previously is plotted. By doing so, a pressure loss curve (curve indicated by a dotted line in FIG. 9) in the case of the terminal system 6 (A6) newly selected this time alone is obtained. Thereby, the pressure loss curve in case water is circulated and supplied independently about all the terminal systems 1-6 (A1-A6) will be obtained. In addition, a pressure loss curve in the case of a combination of any two or more terminal systems for which a pressure loss curve has not been acquired by the same method is also obtained, and each of the above pressure loss curves is stored in the storage means It becomes.
[0069]
FIG. 10 shows an example in which six pressure loss curves are obtained for each of the six terminal systems 1 to 6 (A1 to A6) at the time of single use by the process of step S24. In the figure, four curves shown by solid lines are pressure loss curves when the terminal systems 1 to 4 (A1 to A4) are used individually, and two curves shown by dotted lines are terminal systems 5 and 6 (A5 and A6). It is a pressure-loss curve at the time of each individual use.
[0070]
The normal operation check processing SUB5 of the newly selected terminal system determines whether or not the terminal radiator of the terminal system is normally heated by circulating and supplying hot water heated to a predetermined temperature by burning the heating burner 54 to the predetermined temperature. A known method is conventionally used. That is, the terminal controllers 241 to 246 detect whether the terminal radiators A1 to A6 rise to a predetermined temperature and output them to the controller 24, or each of the forward side thermistor 73 and the return side thermistor 74. It may be determined based on the difference between the temperature detection values.
[0071]
Then, in the terminal on / off valve closing check processing SUB6 after the simultaneous closing operation start (step S3) of all the terminal on / off valves 721 to 724, 151 and 152 of all the terminal systems 1 to 6, as shown in FIG. The timer started from the start of the closing operation waits for the elapse of a preset closing operation time (required time to reach the fully closed state if normal) (step S31), and the number of revolutions at that time is similar to the above. It is determined whether or not the actual circulating flow rate value obtained by calculation based on the detected value and the detected current value is greater than the known bypass flow rate value (step S32). If the actual circulating flow value is the bypass flow value, all the circulating water is circulated through the bypass pipe 75, and all the terminal open / close valves 721-724, 151, 152 are fully closed. It is determined that “closed check OK” is displayed on the liquid crystal display unit of the remote controller 240 (step S33).
[0072]
Conversely, if the actual circulating flow value is greater than the bypass flow value, it is determined that an abnormality has occurred in which one of the terminal on / off valves is not fully closed, and is identified (step) S34). That is, the pressure loss curve that matches the combination of the flow value at that time and the pressure value detected by the pressure sensor 7 is calculated from the various pressure loss curves stored and held in the pressure loss check process SUB4. If the calculated pressure loss curve is a pressure loss curve at the time of single use, it is specified that the terminal on / off valve of the terminal system is not fully closed but is still open, and the calculated pressure loss curve has two or more terminal systems. If it is a pressure loss curve at the time of combination use, it will be specified that each terminal on-off valve of two or more terminal systems concerning the combination is not fully closed but is still open.
[0073]
Then, the terminal on-off valve specified above and the fact that these are closed abnormalities (closed errors) are displayed on the liquid crystal display unit of the remote controller 240 to notify the operator (step S35).
[0074]
Finally, in the pressure loss variation check process SUB7 of each terminal system 1-6, as shown in FIG. 12, the maximum pressure loss curve Wmax among the various pressure loss curves stored and held in the storage means in the pressure loss check process SUB4, The minimum pressure loss curve Wmin is extracted (step S41), and it is determined whether the ratio of Wmax to Wmin (degree of variation; Wmax / Wmin) is larger than a limit value α (for example, α = 1.6) (step S41). S42). If the degree of variation is smaller than the limit value α, “pressure loss variation check OK” is displayed on the liquid crystal display unit of the remote controller 240 as being within the allowable limit (step S43).
[0075]
On the other hand, if the degree of variation is larger than the limit value α, the pressure loss curve W (min-1) on the side larger by one than the above Wmin is extracted although it is not shown in the figure, and this W (min-1) It is determined whether or not the variation degree of Wmax (Wmax / W (min-1)) is larger than the limit value α. If the variation degree of W (min-1) is also larger than the limit value α, the pressure loss curve W (min-i) on the larger side is sequentially extracted until the variation degree becomes smaller than the limit value α. And repeat. Further, the pressure loss variation occurs in the liquid crystal display unit, the specific terminal system corresponding to the Wmax and Wmin, and all the NG (No Good) corresponding to the pressure loss curve in which the variation degree is larger than the limit value α. ) The terminal system and the numerical value of the degree of variation occurring in those NG terminal systems are respectively displayed (step S44).
[0076]
In this case, it is possible to easily and surely notify the operator of the occurrence of pressure loss variation and the terminal system in which the pressure loss variation has been known only with the intuition of skilled workers. Countermeasure work can be carried out quickly and easily. As a result, it is possible to reliably avoid the occurrence of a situation where heating cannot be performed in one terminal system when the two terminal systems having the largest and the smallest pressure loss are simultaneously used in normal operation due to the occurrence of large pressure loss variations. become. In addition, as a countermeasure, the adjustment by the ball valve arrange | positioned at each piping, etc. are mentioned, for example.
[0077]
When the above trial operation control is completed, the heating operation control during normal use is performed by the heating control means. In this case, control is started by turning on the heating operation switch of one or more terminal radiators that the user wants to use from among the terminal radiators A1 to A6 using the terminal controllers 241 to 246 or the remote controller 240. The With this control start, the opening operation of the terminal opening / closing valve of the terminal system that has been turned ON, the operation of the circulation pump 67, and the combustion operation of the burner 54 are started. In that case, the pressure loss curve memorize | stored in the memory | storage means is used as a reference | standard of the operation | movement control of the said circulation pump 67. FIG. That is, an applied voltage command to the circulation pump 67 is output from the heating control means so as to obtain a circulation flow rate corresponding to the pressure loss based on the pressure loss curve of the terminal system that has been turned ON, and based on the applied voltage command. The rotational speed control is performed. As a result, hot water having a flow rate that matches the pressure loss characteristics of the terminal system that is heating-operated is circulated and energy saving is achieved with respect to the driving energy of the circulation pump 67 together with reliable heating operation.
[0078]
To give a more specific example, for example, in FIG. 10, a flow rate value with a pressure loss of 5.00 × 9.8 kPa is calculated from six pressure loss curves, and the flow rate value is circulated at the time of circulation supply to the corresponding terminal system. The operation control standard of the pump 67 may be used.
[0079]
<Other embodiments>
In addition, this invention is not limited to the said embodiment, Other various embodiment is included. That is, in the above-described embodiment, the pressure sensor 7 as pressure detecting means is disposed on the discharge side pipe of the circulation pump 67 to directly detect the pressure in the pipe and indirectly obtain the circulation flow rate value. However, conversely, a flow rate sensor as a flow rate detecting means may be provided for trial operation to directly detect the circulating flow rate value and indirectly obtain the pressure value. In this case, as shown in FIG. 13, the flow rate sensor 8 may be provided in the return pipe 71, or the flow rate sensor 8 may be provided in the discharge side (outward side) pipeline of the circulation pump 67.
[0080]
Further, by omitting the provision of the pressure sensor 7 or the flow rate sensor 8 only for the trial operation, the existing sensors in the hot water supply circuit 21 (see FIG. 1) and the reheating circuit 23 are effectively used only for the trial operation. It may be. For example, a bypass pipe that bypasses from the middle of the return pipe 71 so as to pass through the water amount sensor 45 of the hot water supply water pipe 37 is detachably connected between the return pipe 71 and the hot water supply water pipe 37, The sensor 45 is effectively used as a flow rate detection means when acquiring the pressure loss characteristic data. The bypass pipe should be used only during trial operation and removed after the trial operation. By using a bypass pipe similar to the above, the hot water amount sensor 87 of the pouring pipe 84 may be effectively used as a flow rate detecting means when acquiring the pressure loss characteristic data. In addition, a communication pipe that communicates with the high-temperature or low-temperature heating pipe 70 or 69 is connected to the pressure sensor 89 for detecting the water level in the bathtub of the reheating circuit 23, for example, by switching operation of a three-way switching valve. It is used as pressure detecting means for detecting the pipe pressure by communicating with the heating pipes 70 and 69 during the test operation, and used as a water level detecting sensor for detecting the water level in the bathtub by communicating with the bath return pipe 85 during normal operation. May be.
[0081]
Alternatively, neither the pressure detection means nor the flow rate detection means for trial operation is provided in the heating circuit 22, and correction is made by a pump characteristic table or a pump characteristic correction process SUB2 (see FIG. 3) preset in the controller 24. The pressure loss curve may be obtained using the pump characteristic table.
[Brief description of the drawings]
FIG. 1 is an overall schematic diagram showing a composite heat source apparatus to which an embodiment of the present invention is applied.
FIG. 2 is a schematic diagram showing a heat source unit in a heating circuit portion and a terminal radiator outside the heat source unit.
FIG. 3 is an overall flowchart of test operation control.
FIG. 4 is a pressure-flow rate relationship diagram for explaining correction of a pump characteristic table.
FIG. 5 is a flowchart showing a subroutine of terminal opening / closing valve opening check processing;
FIG. 6 is a time-passing flow rate relationship diagram showing the opening characteristics of the terminal on-off valve.
FIG. 7 is a flowchart showing a subroutine of pressure loss check processing.
FIG. 8 is a pressure-flow rate relationship diagram for explaining a method of acquiring a pressure loss curve when one terminal system is used alone.
FIG. 9 is a pressure-flow rate relationship diagram for explaining each pressure loss curve of a single terminal system and two terminal systems, and a method for obtaining a pressure loss curve when using an unknown terminal system alone from these.
FIG. 10 is a pressure (pressure loss) -flow rate relationship diagram illustrating an example of a pressure loss curve when each of the six terminal systems is used alone.
FIG. 11 is a flowchart showing a subroutine of a terminal check valve closing check process;
FIG. 12 is a flowchart showing a subroutine of pressure loss variation check processing;
FIG. 13 is a view corresponding to FIG. 2 showing a heating circuit to which another embodiment is applied.
[Explanation of symbols]
A1 to A6 terminal radiator
1-6 Terminal system
7 Pressure sensor (pressure detection means)
8 Flow rate sensor (flow rate detection means)
11-15, 15a, 15b Circulation piping
20 heat source machine
21 Hot water supply circuit
22 Heating circuit
23 Chasing circuit (bath chasing circuit)
24 controller
45 Water quantity sensor (Flow detection means for hot water supply circuit)
53 Heat exchanger for heating (heating unit)
54 Heating burner (heating unit)
67 Circulation pump for heating (circulation pump whose drive motor is a DC motor)
73 Outward side thermistor (outward side temperature detection means)
74 Return side thermistor (return side temperature detection means)
84 Pouring pipe (bath pouring circuit)
87 Hot water sensor (Flow detection means for bath pouring circuit)
89 Pressure sensor (Pressure detection means for bath chase circuit)
151,152 Terminal open / close valve
240 Remote control (notification means)
721-724 Terminal open / close valve

Claims (8)

A heat source device having at least a heating circuit in which a heating unit and a circulation pump are disposed, and at least one terminal radiator installed outside the heat source device and connected to the heating circuit by an individual circulation pipe, Hot water heating that is performed before normal operation is performed for a hot water heating apparatus configured such that hot water heated by a heating unit is circulated and supplied through the circulation pipe to the terminal radiator by the operation of the circulation pump. In the test run control method of the device,
As a heat source machine, you have use those one or both of the hot water supply circuit and a bath pouring circuit is attached,
After the hot water heating apparatus is installed using a variable flow rate pump as the circulation pump, the controller of the trial operation control is performed to circulate the operation of the circulation pump with respect to the circulation pipe in a state where the heat source device and the circulation pipe are filled with water. The flow rate is controlled so as to gradually change, and at that time, the parameter relating to the piping resistance of the circulation pipe with respect to the circulation flow that is sequentially changed is sequentially detected and stored in the controller as pressure loss characteristic data of the circulation pipe. West,
As the parameter for the pipe resistance, sequentially obtain each circulation flow value that is sequentially changed and the pipe pressure value in the circulation pipe with respect to the circulation flow of each circulation flow value, and calculate the circulation flow value and the pipe pressure value. Store and hold the relationship as pressure loss characteristic data,
The circulation flow rate value, to detect using only temporarily during commissioning flow rate detecting means one having the hot water supply circuit and a bath pouring circuit
A test run control method for a hot water heater characterized by the above . A heat source device having at least a heating circuit in which a heating unit and a circulation pump are disposed, and at least one terminal radiator installed outside the heat source device and connected to the heating circuit by an individual circulation pipe, Hot water heating that is performed before normal operation is performed for a hot water heating apparatus configured such that hot water heated by a heating unit is circulated and supplied through the circulation pipe to the terminal radiator by the operation of the circulation pump. In the test run control method of the device,
As a heat source machine, you have use those bath reheating circuit is attached,
After installing the hot water heating apparatus using a variable flow rate pump as the circulation pump,
In a state where the heat source unit and the circulation pipe are filled with water, the controller that performs trial operation control controls the operation of the circulation pump so that the circulation flow rate to the circulation pipe is gradually changed. The parameters relating to the piping resistance of the circulating piping are sequentially detected and stored in the controller as pressure loss characteristic data of the circulating piping,
As the parameter for the pipe resistance, sequentially obtain each circulation flow value that is sequentially changed and the pipe pressure value in the circulation pipe with respect to the circulation flow of each circulation flow value, and calculate the circulation flow value and the pipe pressure value. Store and hold the relationship as pressure loss characteristic data,
The piping pressure value, to detect using only temporarily during commissioning the pressure detecting means with the above bath reheating circuit
A test run control method for a hot water heater characterized by the above . A heat source device having at least a heating circuit in which a heating unit and a circulation pump are disposed, and at least one terminal radiator installed outside the heat source device and connected to the heating circuit by an individual circulation pipe, Hot water heating that is performed before normal operation is performed for a hot water heating apparatus configured such that hot water heated by a heating unit is circulated and supplied through the circulation pipe to the terminal radiator by the operation of the circulation pump. In the test run control method of the device,
After placing the hot-water heating system with a flow rate-variable pump as the circulating pump, while water filling in the heat source apparatus and the circulation pipe, for the circulation pipe the operation of the circulation pump by the controller performing the test operation control Control is performed so that the circulation flow rate changes gradually, and at this time, the parameters relating to the piping resistance of the circulation piping with respect to the circulation flow that is sequentially changed are sequentially detected and stored in the controller as pressure loss characteristic data of the circulation piping. And
As the parameter for the pipe resistance, sequentially obtain each circulation flow value that is sequentially changed and the pipe pressure value in the circulation pipe with respect to the circulation flow of each circulation flow value, and calculate the circulation flow value and the pipe pressure value. Store and hold the relationship as pressure loss characteristic data,
A DC motor is used as a motor for driving the circulation pump, and a rotation speed detection means for detecting the rotation speed of the DC motor and a current value detection means for detecting a current value flowing through the DC motor are provided. A pump characteristic table that defines the relationship between the pump work amount and the pump characteristic defined by the pump flow rate and discharge pressure of the circulating pump is stored in advance in the controller, and the rotational speed is detected by the rotational speed detecting means. The pump work amount of the circulating pump is calculated from the value and the current detection value by the current value detecting means, and the relationship between the circulating flow value and the piping pressure value is obtained from the pump characteristic table based on the calculated work amount. And
Prior to the start of trial operation control, correction processing of the pump characteristic table stored and set is performed, and as correction processing of the pump characteristic table, the circulation pipes to all the terminal radiators are closed, thereby heating the heat source machine. After the circuit is switched to only hot water circulation, the circulation pump is operated, and the rotation speed detection value by the rotation speed detection means and the current detection value by the current value detection means are obtained, and by these rotation speed detection value and current detection value, to correct the pump characteristic table to match the pumping work amount defined
A test run control method for a hot water heater characterized by the above . A heat source device having at least a heating circuit in which a heating unit and a circulation pump are disposed, and at least one terminal radiator installed outside the heat source device and connected to the heating circuit by an individual circulation pipe, Hot water heating that is performed before normal operation is performed for a hot water heating apparatus configured such that hot water heated by a heating unit is circulated and supplied through the circulation pipe to the terminal radiator by the operation of the circulation pump. In the test run control method of the device,
A combination of a terminal radiator, a circulation pipe that circulates hot water individually in each terminal radiator, and a terminal opening / closing valve that is interposed in the circulation pipe and switches the supply of warm water to the terminal radiator. the become terminal system attached to the hot-water heating apparatus having two or more,
After the hot water heating apparatus is installed using a variable flow rate pump as the circulation pump, the controller of the trial operation control is performed to circulate the operation of the circulation pump with respect to the circulation pipe in a state where the heat source device and the circulation pipe are filled with water. The flow rate is controlled so as to gradually change, and at that time, the parameter relating to the piping resistance of the circulation pipe with respect to the circulation flow that is sequentially changed is sequentially detected and stored in the controller as pressure loss characteristic data of the circulation pipe. In that case,
Also not a, the relative terminal system by circulating hot water stored and held the pressure loss characteristic data in this case by opening the terminal off valve any one of the terminal systems,
After that, the process of increasing the number of terminal systems that circulate hot water by opening any new terminal on / off valves while keeping the terminal on / off valves up to the previous time, and storing and holding the pressure loss characteristic data in that case is performed on all terminal systems. to repeat successively until the memory holding the pressure loss characteristic data when circulating the hot water at the same time against the complete
A test run control method for a hot water heater characterized by the above . A test operation control method for a hot water heater according to claim 4 ,
By sequentially comparing the pressure loss characteristic data stored and held this time with the pressure loss characteristic data stored and held last time, the pressure loss characteristic data for the terminal system increased this time is sequentially obtained and stored in the controller. A test run control method for a hot water heater. A test operation control method for a hot water heater according to claim 5 ,
Based on the comparison of various pressure loss characteristic data for any one terminal system and any two or more terminal systems, pressure loss characteristic data for any combination of two or more terminal systems is obtained by calculation and stored in the controller A test run control method for a hot water heating apparatus that is held. A test operation control method for a hot water heater according to claim 6 ,
After completing the memory retention of the pressure loss characteristics data for all terminal systems, all the terminal open / close valves of all the terminal systems are closed simultaneously,
When the detected flow rate value of the circulating flow rate is greater than the circulating flow rate value of the heating circuit in the heat source machine after a set time has elapsed since the start of the closing operation, the detected flow rate is compared with various pressure loss characteristic data already stored and held. A trial operation control method for a hot water heating apparatus, in which a non-closed terminal system is indexed by the above. A test operation control method for a hot water heater according to claim 5 ,
Connect the notification means to the controller,
Extract pressure loss characteristic data with variation from individual pressure loss characteristic data for all terminal systems,
A test operation control method for a hot water heater, wherein a terminal system corresponding to the extracted pressure loss characteristic data is notified by the notification means.

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