JP5208841B2 - Installation method of ceiling air conditioner - Google Patents

Description

  The present invention relates to a method for constructing a ceiling air conditioner that can attach a plurality of ceiling air conditioners such as a fan coil unit that adjusts an indoor temperature to a building on site in a short period of time.

  A fan coil unit (FCU) provided with a heat exchanger and a blower is known as a device for adjusting the indoor temperature. The fan coil unit is installed, for example, on the back of a ceiling and is not visible from the living area. 2. Description of the Related Art Conventionally, techniques for improving work efficiency and reducing costs when installing an air conditioner such as a fan coil unit on the back of a ceiling are known (see, for example, Patent Documents 1 and 2).

  FIG. 7 shows an example of a conventional state where the fan coil unit is attached to a building. As shown in FIG. 7, the fan coil unit 1 is suspended from a slab 51 on the back of the ceiling via suspension bolts 41, 42 and 44. The pipes 2 and 3 extend in the horizontal direction from the side surface of the fan coil unit 1, and flexible joints 7 and 8 are attached to ends of the pipes 2 and 3. The flexible joints 7 and 8 are connected to air conditioning pipes 30 and 31 suspended from the slab 51 via suspension bolts 46 and 47. An electromagnetic valve 4 and a manual valve 5 are provided in the middle of the pipe 2, and a manual valve 6 is also provided in the middle of the pipe 3. The pipes 2 and 3 are suspended from the slab 51 via suspension bolts 43. Similarly, the flexible joints 7 and 8 are also suspended from the slab 51 via suspension bolts 45. Conventionally, various members such as the solenoid valve 4 and connection pipes attached to the fan coil unit 1 and, in some cases, instruments, are carried into the construction site in a state separated from the fan coil unit 1, and the fan coil is installed behind the ceiling of the building. Various members were attached to the unit 1 and pipes were connected.

Japanese Patent Laid-Open No. 2002-194847 Japanese Patent Laid-Open No. 2004-12001

  However, connecting pipes attached to the fan coil unit 1 and attaching various members as shown in FIG. 7 on the site where there are many work restrictions requires a lot of time and the construction period is long. . In addition, it is often the case that time is taken for the delivery of members such as equipment and construction materials into the local building, and when there are a large amount of members carried in, it is necessary to consult with the building manager in advance. In other words, when bringing parts into the building, it is necessary to discuss with the contractor in advance about the usage time of the crane and the elevator for construction, or to adjust the work process in advance so that the work efficiency is not reduced due to the congestion of workers. There is. Furthermore, work on site may be work at high places, and the length of work on site is problematic in terms of safety.

  Therefore, the present invention has an object to provide a method for constructing a ceiling air conditioner that can significantly reduce the amount of work on site and can attach a plurality of ceiling air conditioners to a building on site in a short period of time. .

  In order to achieve the above object, the invention according to claim 1 is a method for constructing a ceiling air conditioner that can be attached to a building at a construction site, wherein various members attached to the ceiling air conditioner are made of a horizontal frame material. And assembling the ceiling-suspended air conditioner in advance as a unit outside the construction site by fixing pipes to at least the various members fixed to the frame and fixing the frame to a frame having a vertical frame member having a plurality of connecting holes. A work process; a transporting process for transporting the plurality of ceiling air conditioner units to the site; and attaching the plurality of ceiling air conditioner units transported to the site to a predetermined place of the building. And a field work process for connecting a pipe on the side of the suspended air conditioner to an air conditioner pipe laid in the building.

  According to the present invention, the amount of work at the site is greatly reduced by unitizing (integrating) the ceiling-mounted air conditioner and the various members attached thereto using a gantry in the assembly work process. The construction period can be shortened.

  According to a second aspect of the present invention, in the method for installing the ceiling air conditioner according to the first aspect, the unit of the ceiling air conditioner is configured such that the suspension bolt is suspended from the slab of the building with the connection hole. It is characterized in that it is attached to the slab at a predetermined height by being connected to a vertical frame member.

  According to a third aspect of the present invention, in the method for constructing the ceiling air conditioner according to the first or second aspect, the assembly operation is performed on the vehicle by placing a plurality of units of the ceiling air conditioner on a pallet that can be stored in multiple stages. It is transported from the process to the site, and the pallet is lifted from the vehicle on the site to unload the unit of the ceiling air conditioner.

  According to the first aspect of the present invention, it is possible to unitize the ceiling air conditioner in the assembly work process by fixing various members attached to the ceiling air conditioner and connecting pipes by using the gantry. Become. As a result, the amount of work at the site can be greatly reduced, and a plurality of ceiling-mounted air conditioners can be attached in a short period of time. In addition, pipes can be connected to various components in the assembly work process, so the work efficiency can be greatly increased compared to work on-site, where there are many work restrictions, and the overall construction cost of the ceiling air conditioner can be reduced. It can be reduced and safety can be improved.

  Further, since the ceiling air conditioner can be fixed to the horizontal frame material of the gantry, the ceiling air conditioner can be held in a stable posture. Since the vertical frame member has a plurality of connecting holes, the height of the unit of the ceiling air conditioner can be adjusted using the connecting holes.

  According to the invention described in claim 2, since the suspension bolt is connected to the vertical frame member using the connection hole, the connection position of the vertical frame member and the suspension bolt can be adjusted. The ceiling-suspended air conditioner unit can be attached to the slab at a predetermined height. As a result, the height of the pipe on the ceiling air conditioner side can be made to substantially match the height of the air conditioning pipe installed in the building, and the connection work to the air conditioning pipe becomes easy.

  According to the third aspect of the present invention, the units of the plurality of ceiling air conditioners are placed on a container that can be stored in multiple stages, transported from the assembly process to the site by the vehicle, and lifted together with the container from the vehicle at the site. Since the suspension air conditioner unit is unloaded, it is possible to increase the loading efficiency of the ceiling air conditioner unit and to facilitate handling during loading and unloading and to reduce transportation costs. .

It is a front view which shows the attachment state of the fan coil unit by the construction method of the ceiling air-conditioner of this invention. It is a perspective view which shows an example of the mount frame used for the assembly of the fan coil unit of FIG. It is a top view of the building in which the construction method of the ceiling air-conditioner of the present invention is applied. It is a perspective view of the pallet for mounting the fan coil unit of FIG. It is a side view which shows the conveyance condition of the fan coil unit using the pallet of FIG. It is the comparison figure which compared the work content and work time in the construction method of the ceiling air-conditioner of this invention, and the conventional construction method. It is a front view which shows the attachment condition of the fan coil unit by the conventional construction method.

  1 to 6 show an embodiment of the present invention. 1 and 2 show a unit U of a ceiling air conditioner. Here, the unit U of the ceiling air conditioner fixes the fan coil unit 1 as a ceiling air conditioner, various members such as electromagnetic valves and pipes attached thereto, and the fan coil unit 1 and various members. This means that the gantry 10 is integrated. FIG. 3 shows a plan view of one floor of the multi-storey building 50. On this floor, a total of 29 ceiling-mounted air conditioner units U shown in U1 to U29 are attached.

  The base 10 of the unit U of the ceiling air conditioner is composed of long horizontal frame members 11 and 12 and short horizontal frame members 15 to 20 extending in the horizontal direction, and vertical frame members 13 and 14 extending in the vertical direction. Yes. The gantry 10 is manufactured by combining the frame members 11 to 20 described above, and has an outer shape of a substantially rectangular parallelepiped so that the pallet 35 can be easily loaded. The gantry 10 is formed in such a size that the inner lines of the frame members 11 to 20 accommodate the fan coil unit 1, various members, and a part of the piping. Each of the frame members 11 to 20 is made of a steel plate such as a thin steel plate that is bent so that the cross-sectional shape is L-shaped or an equilateral mountain type steel, and a connecting hole C is constant in the longitudinal direction on each side. It is formed at intervals. The connection hole C is formed as an elongated hole extending along the longitudinal direction of the steel material. The frame members 11 to 20 are used by cutting a material having a predetermined length into a necessary length according to the size and type of the ceiling air conditioner.

  The fan coil unit 1 is located immediately below the horizontal frame member 12 and is fixed to the horizontal frame member 12 with bolts and nuts. Specifically, a perforated flange is formed at both ends on the top surface side in the longitudinal direction of the fan coil unit 1. The fan coil unit 1 and the horizontal frame member 12 are fastened to the flange by bolts (not shown) inserted into the connecting holes C of the horizontal frame member 12 and nuts (not shown) screwed into the bolts. As a result, the fan coil unit 1 is fixed in a state of being suspended from the horizontal frame member 12. Thus, by fixing the fan coil unit 1 in a state of being suspended from the horizontal frame member 12 of the gantry 10, the fan coil unit 1 can be held in a stable posture. In this embodiment, the fan coil unit 1 is fixed only to the upper horizontal frame member 12, but may be fixed only to the lower horizontal frame member 11, or two horizontal frame members 11. , 12 may be fixed.

  The horizontal frame members 11 and 12 are the longest frame members constituting the gantry 10, and extend horizontally in the longitudinal direction of the gantry 10. The short horizontal frame members 15 to 20 extend horizontally in a direction orthogonal to the long horizontal frame members 11 and 12. The vertical frame members 13 and 14 extend in the vertical direction. The horizontal frame members 11 are arranged at predetermined intervals in the left-right direction. The horizontal frame member 12 is located above the horizontal frame member 11 and is disposed at a predetermined interval in the left-right direction.

  The vertical frame member 13 is located at the right end of each of the horizontal frame members 11 and 12, and connects the horizontal frame member 11 and the right end of the horizontal frame member 12 in the vertical direction. The vertical frame member 14 is located at the left end of each horizontal frame member 11, 12 and connects the left end portion of the horizontal frame member 11 and the horizontal frame member 12 in the vertical direction. The short horizontal frame member 15 connects the lower end portions of the vertical frame member 13 in the horizontal direction. The horizontal frame member 16 connects the upper end portions of the vertical frame member 13 in the horizontal direction. The horizontal frame member 17 connects the lower end portions of the vertical frame member 14 in the horizontal direction, and the horizontal frame member 18 connects the upper end portions of the frame member 14 in the horizontal direction. Each of the frame members 11 to 20 is fastened (connected) by a bolt 10a inserted into the connection hole C and a nut 10b screwed into the bolt 10a.

  As described above, in this embodiment, the connection positions of the frame members 11 to 20 can be changed by continuously forming the connection holes C in the respective frame members 11 to 20 at equal intervals. ing. In other words, since the frame members 11 to 20 constituting the gantry 10 can be arbitrarily changed in connection position, the shape can be changed according to the size and type of the ceiling air conditioner. It can also be used for air conditioners. In this embodiment, the outer shape of the gantry 10 is a rectangular parallelepiped (rectangular shape) in consideration of the loading on the pallet 35 to be described later. Also good.

  A fan coil unit 1 as a ceiling air conditioner is fixed to the gantry 10. The fan coil unit 1 includes a heat exchanger, a blower, a filter, and the like, and has a function of sending air whose temperature is adjusted into the room of the building 50. From the side surface of the fan coil unit 1, a pipe 2 constituting a return pipe and a pipe 3 constituting an outgoing pipe extend in the horizontal direction. A flexible joint 7 is attached to the end of the pipe 2. Similarly, a flexible joint 8 is attached to the end of the pipe 3. The flexible joints 7 and 8 are pipe joints that can be bent vertically and horizontally, and have a function of facilitating connection of the pipes 2 and 3.

  As shown in FIG. 2, one flexible joint 7 is suspended from the horizontal frame member 18 via a lifting tool 21. Similarly, the other flexible joint 8 is also suspended from the horizontal frame member 18 via a suspension tool 22. A flange 7 a located on one end side of the flexible joint 7 is connected to the flange 2 a of the pipe 2. A flange 8 a located on one end side of the flexible joint 8 is connected to the flange 3 a of the pipe 3. The pipe 2 is suspended from the horizontal frame member 20 via a hanging tool 24. The pipe 3 is suspended from the horizontal frame member 20 via a hanging tool 25. The gantry 10 differs in size and shape depending on the type of fan coil unit 1 (difference in air conditioning capacity, etc.). For example, in order to avoid interference with members, a cutout portion 14a may be formed in the vertical frame member 14. .

  An electromagnetic valve 4 and a manual valve 5 are provided in the middle of the pipe 2 constituting the return pipe. A manual valve 6 is also provided in the middle of the pipe 3 constituting the outgoing pipe. The electromagnetic valve 4 has a function of opening and closing the pipeline by remote control. The manual valves 5 and 8 are operated by an operator such as during inspection, and are normally open. In the pipes 2 and 3, cold water or hot water flows as an internal fluid.

  Hanging bolts 48 and 49 extending downward are fixed to the slab 51 of the building 50. The horizontal frame member 16 positioned at the right end of the gantry 10 has a connecting bolt C in which the tip of the suspension bolt 48 is inserted, and a nut (not shown) screwed to the tip of the suspension bolt 48 is a horizontal frame member. 16 is engaged. That is, the horizontal frame member 16 is sandwiched from above and below by two nuts that are screwed onto the tip of the suspension bolt 48. Similarly, in the horizontal frame member 18 positioned at the left end of the gantry 10, the tip of the suspension bolt 49 is inserted into the connection hole C, and a nut (not shown) screwed with the tip of the suspension bolt 49 is provided. The horizontal frame member 18 is engaged. Accordingly, the unit U of the ceiling air conditioner is suspended from the slab 51 of the building 50 via the suspension bolts 48 and 49.

  Here, the vertical connecting positions of the horizontal frame members 16 and 18 with respect to the vertical frame members 13 and 14 can be adjusted by a plurality of connecting holes C formed in the vertical frame members 13 and 14, and will be described later. Thus, in a state where the unit U of the ceiling air conditioner is suspended from the slab 51 via the suspension bolts 48, 48, the flexible joints 7, 8 and the air conditioning pipes 30, 31 are vertically aligned so as to substantially coincide with each other. The connection position of the horizontal frame members 16 and 18 with respect to the frame members 13 and 14 is set.

  Thus, in this embodiment, the suspension bolts 48, 49 are connected to the vertical frame members 13, 14 via the horizontal frame members 16, 18, but the suspension bolts 48, 49 are used for connection. It is good also as a structure directly connected to the vertical frame members 13 and 14 using the hole C. Further, the suspension bolts 48 and 49 may be connected to the vertical frame members 13 and 14 via connection fittings or the like instead of the horizontal frame members 16 and 18.

  The flange 7b of one flexible joint 7 of the unit U of the ceiling air conditioner is connected to one air conditioning pipe (main pipe) 30 laid in the building 50. Similarly, the flange 8 b of the other flexible joint 8 of the fan coil unit U is connected to the other air conditioning pipe (main pipe) 31 laid in the building 50. A heat insulating material 32 is provided on the outer periphery of one air conditioning pipe 30, and a heat insulating material 33 is also provided on the outer periphery of the other air conditioning pipe 31. One air conditioning pipe 30 is suspended from the slab 51 of the building 50 via suspension bolts 46. The other air conditioning pipe 31 is also suspended from the slab 51 of the building 50 via suspension bolts 47. The air conditioning pipes 30 and 31 are supplied with hot water or cold water required for indoor temperature adjustment.

  FIG. 4 shows a pallet 35 for carrying units U of a plurality of ceiling air conditioners. The pallet 35 has, for example, a plurality of cross beams 36a, columns 36b, and connecting beams 36c made of steel pipes used to make an assembly scaffold. The mounting pitch of the connecting beams 36c is shorter than the length in the longitudinal direction of the unit U of the ceiling air conditioner, and functions as a part on which the unit U of the ceiling air conditioner is placed. The horizontal beam 36a is connected to the column 36b with a predetermined interval in the vertical direction. The connecting beam 36c has a function of connecting the support column 36b. A caster 37 is attached to the lower end of each column 36b, and the pallet 35 can be easily moved even when a plurality of units U of the ceiling air conditioner are loaded. The unit U of the ceiling air conditioner is loaded on the pallet 35 so that the longitudinal direction is perpendicular to the connecting beam 36c, and is fixed to the pallet 35 by a rubber band (not shown). In this embodiment, for example, six units U of the ceiling air conditioner can be loaded on one pallet 35.

  Next, the assembly procedure of the unit U of the ceiling air conditioner and the construction method on site will be described.

  The assembly work of the unit U of the ceiling air conditioner is performed in the assembly work process of the factory. In the assembly work process, the frame members 11 to 20 are cut into a predetermined length according to the size and type of the fan coil unit 1, and the gantry 10 is assembled using the plurality of frame members 11 to 20. Here, since the frame materials 11 to 20 are cut and used in accordance with the fan coil unit 1 for the manufacture of the gantry 10, the material can be used without waste, and the sheet metal is assembled by welding. Compared to the above, the manufacturing cost of the gantry 10 can be reduced.

  Next, processing such as cutting and threading of the pipes constituting the pipes 2 and 3 is performed, and then the pipes 2 and 3 are attached to the fan coil unit 1. When the installation of the pipes 2 and 3 is completed, various accompanying members such as the fan coil unit 1 and the electromagnetic valve 4 are fixed to the mount 10. Then, the flexible joints 7 and 8 are connected to the ends of the pipes 2 and 3, and the flexible joints 7 and 8 are suspended from the gantry 10 by the dip suspension bands 21 and 22. Thereafter, the drain pipe 9 is attached to the fan coil unit 1, and the drain pipe 9 is suspended from the gantry 10. Thereby, the unit U of the ceiling air conditioner in which the gantry 10, the fan coil unit 1, and various members are integrated is completed.

  Next, a pressure test of the unit U of the ceiling air conditioner is performed. The pressure test is performed by attaching test flanges (not shown) to the flanges 7b and 8b of the flexible joints 7 and 8 and supplying compressed air from the outside to the pipes 2 and 3 of the unit U of the ceiling air conditioner. When the pressure test is completed, the test flange is removed from the flexible joints 7 and 8. Then, the rust prevention coating of the unit U of the ceiling air conditioner is performed. Then, the end of the unit U of the ceiling air conditioner is cured for transportation to the site.

  When the end curing is completed, the unit U of the ceiling air conditioner is loaded on the pallet 35 in FIG. 4 and the unit U of the ceiling air conditioner is rubberized so that the unit U of the ceiling air conditioner does not fall from the pallet 35. It fixes to the pallet 35 with a band (not shown). The insulation work for the unit U of the ceiling air conditioner is performed in a state where the unit U of the ceiling air conditioner is placed on the pallet 35. When the heat insulation work of the unit U of the ceiling air conditioner is completed, the pallet 35 is lifted by the lifting tool 39, and the pallet 35 is placed on the loading platform 38a of the vehicle 38. On the vehicle 38, for example, 29 units U of the ceiling air conditioner arranged in the building 50 of FIG.

  The vehicle 38 loaded with the unit U of the ceiling air conditioner departs from the factory where the assembly work process is performed toward the building 50 on site. When the vehicle 38 arrives at the destination building 50, which is the destination, as shown in FIG. 5, the pallet 35 is lifted by the lifting tool 39, and the pallet 35 is lowered to the floor of the building 50 where the unit U of the ceiling air conditioner is installed. . Here, the pallet 35 is lowered to the installation floor of the unit U of the ceiling air conditioner. However, the pallet 35 may be suspended from the loading stage (an overhanging portion) of the building 50 as necessary. Since the pallet 35 has the caster 37, the pallet 35 can be moved with little effort, and the carrying-in operation | work of the unit U of a ceiling air conditioner becomes easy.

  If there is no loading stage in the building 50, or if there is a loading stage, but the loading opening is too narrow to carry the pallet 35 on which the unit U of the ceiling air conditioner is loaded, the following method is used. It is possible to deal with it. That is, a space for carrying the pallet 35 is secured without completing a part of the outer wall of the building 50, and the pallet 35 is carried from this portion. In addition, in the case of ALC (lightweight cellular concrete) construction, in order to secure the carry-in route for the pallet 35, the ALC wall is left without attaching one or two rooms, and the opening for one or two rooms is left. Then, the pallet 35 is carried to a predetermined location. And after removing the unit U of a ceiling air conditioner from the pallet 35 and carrying out the pallet 35 from the same opening, you may make it attach an ALC wall. Even when there are many partitions due to movement of the pallet 35 in the building 50, a carry-in route for the pallet 35 is secured in advance by the same method as described above, and then the carry-in route is closed.

  The ceiling-mounted air conditioner is a ceiling concealment type fan coil unit 1 disposed behind the ceiling of the building 50, and the building 50 has a structure employing the ceiling concealment type fan coil unit 1. The installation position of the unit U of the ceiling air conditioner carried in is already determined. Therefore, the ceiling-suspended air conditioner unit U can be quickly set at a predetermined location in the building 50, and the ceiling-suspended air conditioner unit U can be suspended from the slab 51 in a short time via the suspension bolts 48 and 49. Is possible.

  When the suspension of the unit U of the ceiling air conditioner is finished, the flange 7b of the flexible joint 7 is connected to one air conditioning pipe 30 laid in the building 50. Similarly, the flange 8 b of the flexible joint 8 is connected to the other air conditioning pipe 31 laid in the building 50. As shown in FIG. 3, a total of 29 ceiling-mounted air conditioner units U shown in U1 to U29 are arranged on a specific floor, so that the same connection is made to the units U of 29 ceiling-mounted air conditioners. Do work. Here, the work at the site is only the work of suspending the unit U of the ceiling air conditioner to the slab 51 and the work of connecting the flexible joints 7 and 8 to the air conditioning pipes 30 and 31. Even when the units U of the suspended air conditioner are arranged at the same time, the work can be completed in a short period of time.

  Further, the unit U of the ceiling air conditioner has the slab 51 by fastening the horizontal frame members 16 and 18 and the suspension bolts 48 and 49 connected to predetermined positions of the vertical frame members 14 and 15 having a plurality of connection holes C. Therefore, the height of the flexible joints 7 and 8 on the fan coil unit 1 side can be substantially matched with the height of the air-conditioning pipes 30 and 31 installed in the building 50. The connection work to the air conditioning pipes 30 and 31 becomes easy.

  FIG. 6 shows a comparison of working time between the conventional method and the unit method according to the present invention. Here, when comparing the working time at the site, it was about 310 minutes per unit in the conventional method, but it was 32 minutes per unit in the unit method, which is a time reduction of 278 minutes. This makes it possible to attach 29 units in one day, while the conventional method required 7 days to install 29 units. Moreover, in the unit construction method of the present invention, even if the work time in the factory and the field is totaled, the work time per unit can be shortened by 14 minutes compared with the conventional construction method, so that the construction cost can be reduced.

  In this way, various members such as the electromagnetic valve 4 and the manual valves 5 and 6 attached to the fan coil unit 1 are fixed to the gantry 10 at the factory, and the ceiling air conditioner is unitized in advance by connecting the various members by piping. As a result, the amount of work at the site with many work restrictions can be significantly reduced, and the construction period at the site can be greatly shortened. Further, the assembly work process of the factory is easier to work than the ceiling of the building 50 at the site, so that the efficiency of the assembly work can be improved and the safety can be improved.

  The embodiment of the present invention has been described in detail above, but the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like without departing from the gist of the present invention, It is included in this invention. For example, although the case where it applied to the fan coil unit 1 as a ceiling air conditioner was demonstrated, a ceiling air conditioner is not limited to the fan coil unit 1, The individual air conditioner etc. which flow water, such as a water heat source heat pump, etc. It may be. Moreover, although the pallet 35 for carrying the unit U of a ceiling air conditioner was comprised from the steel pipe for scaffold assembly, you may make it comprise from members other than this.

1 Fan coil unit (ceiling air conditioner)
2 Piping 3 Piping 4 Solenoid valve (various members)
5 Manual valve (various parts)
6 Manual valve (various components)
7 Flexible joint (piping)
8 Flexible joints (piping)
DESCRIPTION OF SYMBOLS 10 Mounting frame 11-20 Frame material 30 Air-conditioning piping 31 Air-conditioning piping 35 Pallet 50 Building 51 Slab C Connection hole U Unit of ceiling air conditioner

Claims (3)

A method of installing a ceiling air conditioner that can be installed in a building at a construction site,
Various members attached to the ceiling air conditioner are fixed to a frame including a horizontal frame member and a vertical frame member having a plurality of connecting holes, and pipes are connected to at least the various members fixed to the frame. An assembly work process for unitizing the ceiling air conditioner in advance outside the construction site;
A transporting process for transporting a plurality of the suspended air conditioner units to the site;
A field work process of attaching the units of the plurality of ceiling air conditioners transported to the site to a predetermined location of the building, and connecting a pipe on the ceiling air conditioner side to an air conditioning pipe laid in the building; ,
A method for constructing a ceiling air conditioner, characterized by comprising:   The unit of the ceiling air conditioner is attached to the slab at a predetermined height by connecting a suspension bolt suspended from the slab of the building to the vertical frame member using the connection hole. The construction method of the ceiling air conditioner according to claim 1.   A plurality of units of the ceiling air conditioner are placed on a pallet that can be stored in multiple stages and transported from the assembly operation process to the site by a vehicle, and the unit of the ceiling air conditioner is lifted together with the pallet from the vehicle at the site. 3. The method for constructing a ceiling air conditioner according to claim 1 or 2, wherein unloading is performed.

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