BE1030289B1 - METHOD FOR DETERMINING THE INTERNATIONAL LINKS BETWEEN SHUT-OFF VALVES AND REFRIGERANT LEAK SENSORS FOR AN AIR CONDITIONING SYSTEM - Google Patents

Abstract

The present invention relates to a method for determining the interconnections between shut-off valves and refrigerant leakage sensors for an air conditioning system. The method includes the steps of preparing a floor plan of a multi-room building, mapping indoor units of the air conditioning system and shut-off valves on the floor plan, mapping pipes between the shut-off valves and the indoor units on the floor plan, identifying each room with at least one indoor unit and/or refrigerant carrying pipes, with identification of each refrigerant leakage sensor installed in each room with at least one indoor unit and/or refrigerant carrying pipes. This information is then used to determine correspondence relationships between each refrigerant leak sensor and each space, between each valve and each pipe, and between each pipe and each space through which the pipe passes and/or enters. These three types of correspondence relationships are used to establish a fourth correspondence relationship between each shut-off valve and each refrigerant leakage sensor.

Description

1 BE2022/5124

METHOD FOR DETERMINING THE LINKS

BETWEEN SHUT-OFF VALVES AND REFRIGERANT LEAK SENSORS FOR A

AIR CONDITIONING SYSTEM

FIELD OF INVENTION

The present invention relates to a method for installation support. In particular, the present invention relates to a computer-implemented method for installation support of air conditioning systems.

BACKGROUND

To reduce the burden on the environment, air conditioners have been developed in recent years that use a refrigerant with a low global warming potential [GWP]. Some commonly used low GWP refrigerants are known to be flammable and/or toxic. This makes safety measures against refrigerant leakage indispensable. Especially when the amount of refrigerant used in relation to the volume of space to be conditioned is large, means to prevent and contain refrigerant leaks are even more important.

Systems such as those disclosed by JP6687043, JP2020194353, EP2600073 and

JPWO2020234935 enable the design and/or modeling and representation of air conditioning systems. However, such systems are intended to evaluate and/or size the air conditioning system and do not have features that allow addressing the safety of the system.

EP3764008 discloses an apparatus for assisting in air conditioning design.

The device is configured to inform the user of the need for safety measures such as shut-off valves and/or ventilation. This need for safety measures is determined by the refrigerant charge ratio [In the

English: refrigerant charge ratio, RCR] of the space to be treated and compare this ratio with a predetermined range. The design tool described in EP '008 focuses only on the local inclusion of safety measures. However, according to EN 378 2016

2 BE2022/5124 only indoor air conditioning units, but also pipes are considered potential sources of leakage. Safety measures for dealing with leaks should therefore not only apply to air-conditioned areas, but should also apply to other areas where leaks may occur.

A further limitation of the state of the art relates to the absence of design methods that allow developing control logic for the operation of a safety system.

The present invention aims to find a solution for at least some of the above-mentioned problems and disadvantages. The aim of the invention is to provide a method that eliminates these disadvantages. The present invention is aimed at solving at least one of the above-mentioned disadvantages.

SUMMARY OF THE INVENTION

The present invention and embodiments thereof serve to provide a solution for one or more of the above-mentioned disadvantages. To this end, the present invention relates to a method for determining the mutual connections between shut-off valves and refrigerant leakage sensors for an air conditioning system.

The described method can be carried out inexpensively and easily manually or automatically. This is due to the highly structured way in which correspondence relationships between elements of the system are represented.

The table structure expressing the above correspondence relationships is advantageously conducive to reading and processing by humans and machines.

The present invention relates to a method for determining the mutual connections between shut-off valves and refrigerant leakage sensors for an air conditioning system.

Unless otherwise defined, all terms used in disclosing the invention, including technical and scientific terms, have the meanings commonly understood by one of ordinary skill in the art to which this invention belongs. By way of further guidance, are

3 BE2022/5124 term definitions included to better appreciate the teachings of the present invention.

As used herein, the following terms have the following meanings: “A,” “the,” and “it,” as used herein, include both singular and plural referents unless the context clearly indicates otherwise. By way of example, 'a compartment' refers to one or more compartments. 'Include', 'comprising' and 'includes' and 'consisting of' as used here are synonymous with 'containing', 'containing' or 'containing' and are inclusive or open terms that specify the presence of what follows (e.g. a component) and do not exclude the presence of additional, not mentioned components, features, elements, parts, steps, which are well known in the prior art or described therein.

Furthermore, the terms first, second, third and the like are used in the description and in the claims to distinguish similar elements and not necessarily to describe a sequence, either temporal or spatial, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operating in any order other than that described or shown herein.

Quoting numerical ranges by endpoints includes all numbers and fractions included within that range, as well as the quoted endpoints.

While the terms "one or more" or "at least one", such as one or more or at least one member(s) of a group of members, is self-evident, by further explanation the term includes, among other things, a reference to one of the members, or to two or more of the members, such as for example any >3, 24, 25, 26 or >7 etc. of the members, and to all mentioned members.

Unless otherwise defined, all terms used in disclosing the invention, including technical and scientific terms, have the meanings commonly understood by one of ordinary skill in the art to which this invention belongs. As further guidance, definitions for the terms used in the description are included for the teaching

4 BE2022/5124 of the present invention. The terms or definitions used herein are intended solely to assist in the understanding of the invention.

References throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or feature described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, occurrences of the phrases “in one embodiment” or “in an embodiment” at various places throughout this specification do not necessarily all refer to the same embodiment, but may do so. Furthermore, the specific features, structures or characteristics may be combined in any suitable manner, as would be apparent to one skilled in the art based on this disclosure, in one or more embodiments. Furthermore, while some embodiments described herein include some, but not other, features included in other embodiments, combinations of features of different embodiments are intended to be within the scope of the invention, and constitute different embodiments, as would be understood by those skilled in the art . For example, in the following claims, any of the claimed embodiments may be used in any combination.

In a first aspect, the invention provides/concerns a method for determining the interconnections between shut-off valves and refrigerant leakage sensors for an air conditioning system, comprising the steps of: creating a floor plan of a multi-room building; mapping indoor air conditioning system units and shut-off valves on the floor plan; mapping pipes between the shut-off valves and the indoor units on the floor plan; installing refrigerant leakage sensors in every room with at least one indoor unit and/or at least one pipe; determining a first correspondence relationship between each refrigerant leakage sensor and each space; determining a second correspondence relationship between each shutoff valve and each line;

determining a third correspondence relationship between each pipe and each space through which the pipe passes and/or enters; determining a fourth correspondence relationship between each shut-off valve and each refrigerant leakage sensor, wherein the fourth correspondence relationship is determined from the first correspondence relationship, the second correspondence relationship and the third correspondence relationship.

According to the first aspect, since the air conditioning system has a fourth correspondence relationship between each shutoff valve and each refrigerant leakage sensor, the shutoff valve corresponding to the refrigerant leakage sensor that detected the refrigerant leakage can be identified.

Thus, since a shutoff signal is sent to the at least one shutoff valve corresponding to the refrigerant leakage sensor that detects the refrigerant leakage, the refrigerant can be prevented from flowing into the space where the refrigerant leakage occurs. Also, if the plurality of refrigerant leakage sensors have a fourth correspondence relationship with one shut-off valve, a refrigerant leakage detection from one of the refrigerant leakage sensors having the fourth relationship can be captured.

Moreover, no matter how the indoor units, the shut-off valves and the piping between the — shut-off valves and the indoor units are arranged on the floor plan, the fourth relationship can be easily obtained. Because the fourth correspondence relationship is determined from the first correspondence relationship between each refrigerant leakage sensor and each space, the second correspondence relationship between each shut-off valve and each pipe, and the third correspondence relationship between each pipe and each space through which the pipe passes and/or enters, determining the fourth correspondence relationship can be carried out automatically with advantage.

In a further or different embodiment, the method further includes the step of assigning a unique identifier to each indoor unit, shut-off valve, pipe and refrigerant leakage sensor. Said unique identifier advantageously excludes any error from an automated response of the system to a detected refrigerant leak. In addition, the indoor unit, shut-off valve, pipe and refrigerant leakage sensor each have the unique identifier, making it easier to determine their respective correspondence relationship in the indoor unit, shut-off valve, pipe and refrigerant leakage sensor.

In a further or different embodiment, the method further comprises the step of calculating the number of refrigerant leakage sensors to be installed in each room.

6 BE2022/5124 are installed. If multiple indoor units are installed in a room, preferably the number of refrigerant leakage sensors equal to the number of indoor units installed in the room can be installed in that room. This advantageously makes it possible to increase the chance of early detection of a possible leak in a room. In addition to the time it takes for a coolant to spread and reach other parts of a room, another relevant aspect concerns the concentration of the coolant. This advantageously makes it possible to avoid a significant amount of refrigerant leaking before a detectable concentration develops.

In a further or different embodiment, the number of refrigerant leakage sensors in each space is calculated based on the volume of each space. More preferably, the number of refrigerant leakage sensors in each room is calculated based on the toxicity of the refrigerant. In particular, the more toxic the refrigerant, the more refrigerant leak sensors are installed in a room. This advantageously makes it possible to further reduce the time from the start of a leak to its detection.

In a further or different embodiment, the method further comprises the step of calculating the location of refrigerant leakage sensors to be installed in each room. Preferably, the location of refrigerant leakage sensors in each room is determined based on the density of the refrigerant relative to the air density. In this way, refrigerant leak sensors are placed where the refrigerant will accumulate in the event of a leak. Equally important, in this way the refrigerant leak sensors are placed where the refrigerant concentration will increase more quickly in the event of a leak. This advantageously enables a further significant reduction in the detection time. Based on experiments conducted to test the best location for the refrigerant leakage sensors, each refrigerant leakage sensor is preferably placed under each indoor unit.

Further preferably, each refrigerant leakage sensor can be placed near the floor of the nearest wall of each indoor unit. In this way, the refrigerant leakage sensors are advantageously placed as close as possible to the path of the leaking refrigerant, ensuring the fastest possible refrigerant leakage detection times.

In a further or different embodiment, the step of mapping the indoor units and the shut-off valves is performed manually. In this way

7 BE2022/5124 conveniently creates locations and individual identifiers for each indoor unit and each shut-off valve. This advantageously enables the establishment of clear correspondence relationships between different elements of the air conditioning system.

In a further or different embodiment, the mapping of the pipes between shut-off valves and indoor units is performed manually. In this way, computer errors are advantageously avoided, which also prevents errors in establishing correspondence relationships between shut-off valves and indoor units.

In a further or different embodiment, the shut-off valves are controlled and operated by a central control unit, wherein the central control unit is provided with information about the shut-off valves and sensor connections. Preferably, in the event of a leak, the user is informed of the leak and which sensor(s) have detected the leaking refrigerant, at which point the user can issue a signal that causes all shut-off valves linked to said sensor(s) to close. More preferably, the sensor(s) sends a signal to the controller when detecting leaking coolant, which signal causes the controller to send a second signal to all shut-off valves linked to said sensor(s). In this way, the response time in the event of a leak is significantly shortened.

In a further or different embodiment, the shut-off valves are coupled to the coolant leakage sensors of one or more spaces through which the line of said shut-off valve extends. In this way, each refrigerant leakage sensor is linked to recovery from any possible source of leakage that can be detected by said refrigerant leakage sensor. This advantageously shortens the response time from detection of a leak to repair of that leak.

The shorter response time advantageously makes it possible to reduce any further increase in the refrigerant concentration in the space into which the refrigerant is leaking.

In a further or different embodiment, the first correspondence relationships, the second correspondence relationships, the third correspondence relationships and the fourth correspondence relationships are shown in table form. This way, any correspondence relationships are direct and easily readable by a human. The tabular representation is also well suited to be translated into machine language,

8 BE2022/5124 as the data as well as each element, the values and the correspondence with other elements are clearly structured.

In this context, 'tabular form' means any data that is presented in the form of a table.

In a further or different embodiment, the first correspondence relationships, the second correspondence relationships, the third correspondence relationships and the fourth correspondence relationships are stored in a machine readable format. Preferably, said correspondence relationships are introduced by the user using an interface that automatically records said correspondence relationships in a machine-readable format. In this way, the data produced in this way can be easily used or, if necessary, easily converted into data that can be used and interpreted by a controller. This advantageously avoids the need for the user to manually enter the same correspondence data multiple times, thereby speeding up the setup time and ramp-up time of the air conditioning system.

In a further or different embodiment, the fourth correspondence relationships are determined manually. This advantageously allows the use of first, second and third correspondence relationship data that is not in a machine readable format.

In a further or different embodiment, the fourth correspondence relationships are determined automatically. In this way, machine-readable data on the first, second, and third correspondence relationships is used to quickly generate the fourth correspondence relationship data. Advantageously, the generated fourth correspondence relationship data is immediately generated in a machine readable format.

The invention is further described by the following non-limiting examples which further illustrate the invention and are not intended, nor should they be construed, to limit the scope of the invention.

9 BE2022/5124

SHORT DESCRIPTION OF THE DRAWINGS

The following description of the figures of specific embodiments of the invention is exemplary only in nature and is not intended to limit the present teachings, their application or use. In all drawings, corresponding reference numerals indicate similar or similar parts and features.

Figure 1 shows a schematic representation of a building equipped with an air conditioning system.

DETAILED DESCRIPTION OF THE EMBODIMENTS:

With the aim of better illustrating the features of the invention, the following presents, as an example and in no way limiting, other potential applications, and applications of the software for installation support of an air conditioning system. The air conditioning system according to the present embodiment is, for example, an air conditioning system capable of cooling and heating by using CO2 or R466A refrigerant. In the present example, the application of said software is preceded by the steps of: 1. Creating a floor plan of a building with multiple rooms; 2. Mapping indoor air conditioning system units and shut-off valves on the floor plan; 3. Mapping pipes between the shut-off valves and the indoor units on the floor plan; 4. Analyze each room on the floor plan and record and/or mark each room with at least one indoor unit and/or at least one pipe; 5. Installing refrigerant leakage sensors in every room with at least one indoor unit and/or at least one pipe; 6. Assign a unique identifier to each space, shut-off valve, pipe and refrigerant leakage sensor.

Preparing a floor plan is usually accomplished by accessing building information modeling databases. Preferably a two- or three-dimensional representation of the floor plan is made. The resulting view allows the visualization of any room and corridor.

10 BE2022/5124

Then, indoor units and shut-off valves are mapped onto the floor plan prepared in the previous step. Mapping the indoor units and shut-off valves consists of marking the location of each of these elements on the floor plan. Mapping of both indoor units and shut-off valves can be done manually or automatically. Additionally, special software can be provided to assist with this step.

Similar to the previous step of mapping indoor units and shut-off valves, the piping mapping step consists of displaying refrigerant piping on the floor plan so that each indoor unit and shut-off valve are connected. Mapping the pipes can be done manually or automatically. In addition, with the help of special software, the drawing of pipes between the indoor units and the shut-off valves can be done automatically.

After mapping all indoor units, shut-off valves and pipes, the next step is to analyze each room on the floor plan and record and/or mark each room with at least one indoor unit and/or at least one pipe. This step can be performed manually or automatically.

Additionally, special software can be provided to assist with this step.

The next step then consists of installing refrigerant leakage sensors in every room with at least one indoor unit and/or at least one pipe. The application of the refrigerant leakage sensors can be done manually or automatically. Additionally, special software can be provided to assist with this step. By using the special software, the step of calculating the number of refrigerant leakage sensors to be installed in each room can also be included. With further preference, the step of calculating the location of the refrigerant leakage sensor to be installed in each room can be included. The number of refrigerant leakage sensors can be calculated based on the volume of each room and the toxicity of the refrigerant. For example, if the volume of the room is large, it is necessary to install several indoor units in one room. Therefore, if the volume of the room is large, it is preferable to install multiple refrigerant leakage sensors. The same number of sensors as the number of indoor units may also be installed. Even if there are many connection points in the pipes that run through the room (connection point

11 BE2022/5124 between two pipes and pipe and indoor unit), it is preferable to install multiple refrigerant leakage sensors. In addition, it is preferable to install more refrigerant leakage sensors as the refrigerant toxicity becomes stronger.

The location of the refrigerant leak sensor can be calculated based on the density of the refrigerant compared to the air density. For example, if the refrigerant density is large, the position of the refrigerant leakage sensor is preferably installed near the horizontal distance from the position directly below the indoor unit. That is, if the density of the refrigerant is large, it is believed that the leaked refrigerant is difficult to disperse in the air and leaks downward at the leakage point. Therefore, it is preferable to install the refrigerant leakage sensor near the horizontal distance from the position directly below the indoor unit.

The final step leading to the preparation of the correspondence relationship tables is to assign a unique identifier to each space, shut-off valve, pipe, and refrigerant leakage sensor. In this way, unique correspondence relationships can be expressed without the risk of interpretation errors. The assignment of a unique identifier can be done manually or automatically. Additionally, special software can be provided to assist with this step.

FIG. 1 shows a schematic representation of a building equipped with an air conditioning system. Fig. 1 shows a diagram of a state in which multiple indoor units, multiple shut-off valves, multiple pipes connected between the indoor units and the shut-off valves, and multiple refrigerant leakage sensors are depicted on the plan 1. The air conditioning system according to the present embodiment includes a compressor unit (not shown), a number of indoor units, a switch box 6 connected between the compressor unit and each indoor unit, a number of refrigerant leakage sensors and a controller 7. The switch box 6 includes a plurality of shut-off valves, a manifold and a controller 7. The controller 7 corresponds to a central control unit in the claims. The controller 7 consists of a computing circuit such as a CPU (central processing unit), a working memory used by the CPU, such as a

RAM (random access memory), a recording medium that stores operating programs and information used by the CPU, such as a ROM (read-only memory), and

12 BE2022/5124 a timer, although they are not displayed. The control box 6 splits the refrigerant flow to and from the compressor unit into several pairs of bi-directional refrigerant connections by means of the manifold. The switch box 6 is connected to an indoor unit via two pipes. The two pipes consist of a liquid pipe through which a liquid coolant flows and a gas pipe through which a gaseous coolant flows. The switch box 6 has several pairs of liquid pipes and gas pipes, which number of pairs is equal to the number of indoor units that can be connected. The shut-off valves consist of an on-off valve such as a solenoid valve. Each shut-off valve is located on each liquid line and each gas line. Each pair of liquid pipes and gas pipes is connected to each indoor unit. When a refrigerant leakage is detected by a refrigerant leakage sensor placed in a room, the CPU receives a refrigerant leakage signal from the refrigerant leakage sensor that detected the refrigerant leakage and sends a shut-off signal to a corresponding shut-off valve. By closing the shut-off valve, the refrigerant circulating in the air conditioning system can no longer flow into the room where the refrigerant leak occurred. The ROM stores information about the correspondence relationships of each space, refrigerant leak sensor, pipe and shut-off valve. When the CPU receives a signal about the coolant leakage from the coolant leakage sensor, the CPU accesses the ROM to read the information. The CPU then sends a shutdown signal to a corresponding shutdown valve.

To enable the creation of clear correspondence relationships, each space, refrigerant leak sensor, pipe and shut-off valve is mapped and given a unique identifier. FIG. 1 shows an example in which several shut-off valves (W,X,Y and Z) are installed in one switch box 6. The floor plan 1 includes six rooms A to F. Of which, room A is equipped with a first indoor unit 2, room B is equipped with a second indoor unit 3 and room E is equipped with a third indoor unit 4 and a fourth indoor unit 5. Refrigerant is distributed via the manifold in the switch box 6, which refrigerant is then distributed via pipe a to first indoor unit 2, B to second indoor unit 3, y to third indoor unit 4 and ö to fourth indoor unit 5. Pipe a is shown crossing spaces C and A, pipe B is shown crossing spaces C and B, pipes y and ö are shown crossing spaces C, D and E.

Refrigerant leakage sensor a is shown assigned to room A, refrigerant leakage sensor b is shown assigned to room B, refrigerant leakage sensors c and d are shown assigned to room C,

13 BE2022/5124 refrigerant leakage sensor e is displayed assigned to room D and refrigerant leakage sensor f and g are displayed assigned to room E.

A controller 7 is shown in connection with switch box 6 for controlling shut-off valves W, X, Y and Z.

A first set of correspondence relationships is shown in Table 1. The first correspondence relationship shows the relationship between each refrigerant leakage sensor and each room. The correspondence between each room A to E and the refrigerant leakage sensors a to g is determined based on the refrigerant leakage sensors present in each room. In this way, any reference to a room, such as in another correspondence table, can be directly and easily converted into a correspondence with the at least one refrigerant leakage sensor present in that room.

Table 1

ALREADY

BL B d

PL f

Eh

FL

A second correspondence relationship is shown in Table 2. The second correspondence relationship shows the relationship between each shutoff valve and each pipe. In this table, each pipe a to ö is shown associated with the shut-off valve W to Z from which it receives coolant. In this way, correspondence relationships established between other elements and a pipe can be immediately and easily converted into correspondence relationships between said elements and the shut-off valves corresponding to the pipe.

Table 2

LM | 8

OKB

Luff | 8

14 BE2022/5124

A third correspondence relationship of each pipe and each space through which the pipe passes and/or enters in the example of Figure 1 is shown in Table 3.

The third correspondence relationship shows the relationship between each pipe and each space through which the pipe passes and/or enters. This correspondence relationship shown in this table is determined by either tracing the path of each pipe and recording the spaces traversed by the pipe, or by checking for pipe segments in each space. The correspondence relationship shown in Table 3 provides the means to link the information from Table 1 to the information from Table 2.

Table 3

A sle

B sle

c

Y D

:

c

D

The fourth and final correspondence relationship concerns the shut-off valves and the refrigerant leakage sensors. This fourth correspondence relationship differs from

Table 3. The first step consists of replacing each pipe on the first column of said Table 3 with the corresponding shut-off valve according to Table 2. The second step consists of replacing the spaces in the second column of

Table 3 by the refrigerant leakage sensors in the rooms according to Table 1. The resulting fourth correspondence relationship is shown in Table 4.

Table 4

15 BE2022/5124

A more economical representation of the information from Table 4 is given in Table 5. Table 5 is organized so that the index column includes each individual refrigerant leakage sensor. This presentation is much more beneficial, especially in the event of a leak, because the activated refrigerant leakage sensors can be immediately found in the table, advantageously avoiding the need to go through all the columns of Table 4 to find and repair each refrigerant leakage sensor. determine which shut-off valves need to be closed.

Table 5

OW

1 8 NE

LE] RME

LE | NE

It is believed that the present invention is not limited to any form of realization as previously described and that some modifications can be added to the presented example without reconsidering the appended claims.

List of numbered items: 1 floor plan 2 first indoor unit 3 second indoor unit 4 third indoor unit 5 fourth indoor unit 6 switching unit 7 controller

Claims (15)

CONCLUSIONS 1. Method for determining the interconnections between shut-off valves (W-Z-) and refrigerant leakage sensors (a-g) for an air conditioning system, comprising the steps of: creating a floor plan (1) of a multi-room building (A-F) ; mapping indoor units (2-5) of the air conditioning system and shut-off valves (W-Z) on the floor plan (1); mapping pipes (a, B, y, ©) between the shut-off valves (W-Z) and the indoor units (2-5) on the plan (1); installing refrigerant leakage sensors (a-g) in each room (A-F) with at least one indoor unit (2-5) and/or at least one pipe (a, B, y, ©); determining a first correspondence relationship between each refrigerant leakage sensor (a-g) and each space (A-F); determining a second correspondence relationship between each shutoff valve (W-Z) and each line (a, B, y, ©); determining a third correspondence relationship between each pipe (a, B, Y, ò) and each space (A-F) through which the pipe (a, B, y, à) passes and/or enters; determining a fourth correspondence relationship between each shut-off valve (W-Z) and each refrigerant leakage sensor (a-9), the fourth correspondence relationship being determined from the first correspondence relationship, the second correspondence relationship and the third correspondence relationship. Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to claim 1, characterized in that the method further comprises the step of assigning a unique identifier to each room (A-F ), shut-off valve (W-Z), pipe (a, B, y, ©) and refrigerant leakage sensor (a-g). Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to claim 1 or 2, characterized in that the method further comprises the step of calculating the number of refrigerant leakage sensors (a-g) to be installed in each room (A-F). Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to claim 3, characterized in that the number of refrigerant leakage sensors (a-g) in each room (A-F) is calculated based on the volume of each room (A-F). Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to any one of claims 1 to 4, characterized in that the number of refrigerant leakage sensors (a-g) in each room (A-F) ) is calculated based on the toxicity of the coolant. Method for determining the mutual couplings between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to any one of claims 1 to 5, characterized in that the method further comprises the step of calculating the location of refrigerant leak sensors (a-g) to be installed in each room (A-F). Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to claim 6, characterized in that the location of refrigerant leakage sensors (a-g) in each room (A-F) is determined on the basis of the density of the coolant compared to the air density. Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to any one of claims 1 to 7, characterized in that the step of mapping the indoor units ( 2-5) and the shut-off valves (W-Z) is carried out manually. Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to any one of claims 1 to 8, characterized in that the mapping of the pipes (a, B , y, ©) between shut-off valves (W-Z) and indoor units (2-5) is performed manually. Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to any one of claims 1 to 9, characterized in that the shut-off valves (W-Z) are controlled and operated by a central control unit (7), wherein the central control unit (7) is provided with the information about the shut-off valves (W-Z) and refrigerant leakage sensor connections (a-g). Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to any one of claims 1 to 10, characterized in that the shut-off valves (W-Z) are coupled to the refrigerant leakage sensors ( a-g) of one or more spaces (A-F) through which the line (a, B, y, 5) of said shut-off valve (W-Z) extends. Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to any one of claims 1 to 11, characterized in that the first correspondence relations, the second correspondence relations, the third correspondence relations and the fourth correspondence relationships are tabulated. Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to any one of claims 1 to 12, characterized in that the first correspondence relations, the second correspondence relations, the third correspondence relations and the fourth correspondence relationships are stored in a machine-readable format. Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to any one of claims 1 to 13, characterized in that the fourth correspondence relationships are determined manually. Method for determining the mutual connections between shut-off valves (W-Z) and refrigerant leakage sensors (a-g) for an air conditioning system according to any one of claims 1 to 14, characterized in that the fourth correspondence relationships are determined automatically.