Installation Manual

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Table Of Contents

9380120001-06 EN_D1.pdf

English

AIR CONDITIONER

BRANCH BOX

INSTALLATION MANUAL

For authorized service personnel only.

PART NO. 9380120001-06

Contents

1. SAFETY PRECAUTIONS ........................................... 2

2. ABOUT THE UNIT ...................................................... 4

2.1. Precautions for using R410A refrigerant .............. 4

2.2. Special tools for R410A ........................................ 4

2.3. Accessories .......................................................... 4

3. SYSTEM CONFIGURATION ...................................... 5

4. INSTALLATION WORK ............................................... 5

4.1. Selecting an installation location .......................... 5

4.2. Installation dimensions ......................................... 6

4.3. Installation of the unit ........................................... 8

5. PIPE INSTALLATION ................................................ 12

5.1. Refrigerant pipe size and allowable piping

length ................................................................. 12

5.2. Selecting the pipe material ................................. 13

5.3. Flare connection (Pipe connection).................... 13

5.4. Installing insulation ............................................. 15

6. ELECTRICAL WIRING ............................................. 16

6.1. Safety precautions for electrical wiring .............. 16

6.2. Selecting the cable and breaker ........................ 17

6.3. Wiring ................................................................. 17

7. TEST RUN AND CHECK LIST.................................. 20

8. MALFUNCTION DIAGNOSTICS ............................. 20

Español Français

9380120001-06 EN.indd 19380120001-06 EN.indd 1 6/16/2558 BE 8:19 PM6/16/2558 BE 8:19 PM

Summary of content (20 pages)

PAGE 1
INSTALLATION MANUAL Español For authorized service personnel only. Français English AIR CONDITIONER BRANCH BOX Contents 1. SAFETY PRECAUTIONS ........................................... 2 5. 2. ABOUT THE UNIT ...................................................... 4 3. 4. PIPE INSTALLATION ................................................ 12 5.1. Refrigerant pipe size and allowable piping 2.1. Precautions for using R410A refrigerant .............. 4 length ........................................
PAGE 2
1. SAFETY PRECAUTIONS IMPORTANT! Please Read Before Starting This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. For safe installation and trouble-free operation, you must: ÷ ÷ ÷ ÷ Carefully read this instruction booklet before beginning. Follow each installation or repair step exactly as shown.
PAGE 3
English WARNING Ask a qualified technician to perform the installation. A faulty installation carried out by the customer himself/herself may cause a water leakage, electric shock or fire. Perform the installation properly by following this Installation Manual. Otherwise, a faulty installation may cause water leakage, electric shock or fire. Be sure to always use the parts accessories or the specified parts for installation.
PAGE 4
2. ABOUT THE UNIT 2.1. Precautions for using R410A refrigerant The basic installation work procedures are the same as conventional refrigerant models. However, pay careful attention to the following points: 1 Since the working pressure is 1.6 times higher than that of conventional refrigerant (R22) models, some of the piping and installation and service tools are special. (See the table below.
PAGE 5
SYSTEM CONFIGURATION For the installation method of indoor and outdoor units, refer to the installation manuals that come with them. Indoor unit Branch box (Secondary2) Branch box Primary unit : UTP-PU03A Secondary unit : UTP-PU03B Indoor unit Breaker2 2 to 8 indoor units can be connected. When installing just 1 branch box, be sure to use the primary unit. When installing multiple branch boxes, use both the primary unit and secondary units together. English 3.
PAGE 6
4.2. Installation dimensions ÷ ÷ ÷ ÷ ÷ ÷ The branch box can be installed onto the wall or hanging from the ceiling. The branch box can be installed and set horizontally or vertically. Provide a service hole for maintenance and inspection purposes as shown in the figure below. It is not necessary to provide drainage for the Branch box. The slope of the top side must be within ±5° in all directions of the horizontal plane. Use M8 or M10 (5/16 in. or 3/8 in.) for the bolt size when hanging. 4.2.1.
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4.2.2. Vertical installation ÷ A vertical installation can only be performed when mounting on the wall. (A vertical installation cannot be hung from the ceiling.) ÷ Be sure to install the control box so that the top side faces up. ÷ The positioning of the control box cannot be changed when performing a vertical installation. English Unit: mm (in.
PAGE 8
4.3. Installation of the unit WARNING Perform installation in a location which can properly withstand the weight of the unit. Failure to install in a robust location or a faulty installment may cause the equipment to fail, water leakage, electric shock or fire. During installation, secure the hanger bolt so it does not come off. CAUTION Be sure to provide adequate maintenance space when installing the unit above the ceiling. (Refer to the installation restrictions contained in “4.2 Installation dimensions”.
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(5) Remove the control box as shown in the figure, and then (6) Attach the control box to the main unit as shown in the change the positioning to the opposite side. figure. Control box Control box English To the opposite side The lead wire runs here Remove the control box by lifting up and out through slots Insert and fix the control box using the slots (7) Attach the bottom panel and secure it with the screws (4 pieces).
PAGE 10
4.3.2-A. Fix the unit (When hanging from the ceiling) CAUTION Do not hang from the ceiling when performing a vertical installation. (1) Secure the hangers (accessories) with the screws (2 pieces, Ø 4 x 10, accessories). (4 places) (2) Secure the attachment section with the hanging bolt. (Use M8 or M10 (5/16 or 3/8 in.) for the hanging bolt) (3) Secure the hangers with hexagonal nuts (field supply) and the washers (accessories) as shown in the figure below.
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4.3.2-B. Fix the unit (For wall installation) (1) Secure the hangers (accessories) with the screws (2 pieces, Ø 4 x 10, accessories). (4 places) • Install the unit with its top side facing upwards. (1) Secure the hangers (accessories) with the screws (2 pieces, Ø 4 x 10, accessories). (4 places) • Install the unit with the control box facing upwards.
PAGE 12
5. PIPE INSTALLATION 5.1. Refrigerant pipe size and allowable piping length CAUTION Do not mix with other air/gases except the specified refrigerant for the refrigerant cycle. Ventilate the area if there is a refrigerant leak while performing the installation. Over-tightening when connecting the flare fittings can result in cracking or breaking of the flare nuts, and thus cause a refrigerant leak. For on-site piping insulation, be sure that the insulation covers the entire unit’s pipe connection.
PAGE 13
5.2. Selecting the pipe material It is necessary to use seamless copper pipes and it is desirable that the amount of residual oil is less than 40 mg/10 m (0.004 oz/100 ft). Do not use copper pipes having a collapsed, deformed or discolored portion (especially on the interior surface). Otherwise, the expansion valve or capillary tube may become blocked with contaminants.
PAGE 14
5.3.2. Bending pipes The pipes are shaped by your hands. Be careful not to collapse them. Do not bend the pipes in an angle more than 90°. When pipes are repeatedly bent or stretched, the material will harden, making it difficult to bend or stretch them any more. Do not bend or stretch the pipes more than 3 times. CAUTION To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 100 mm (4 in.) or over. If the pipe is bent repeatedly at the same place, it will break. 5.
PAGE 15
5.4. Installing insulation English CAUTION Install heat insulation around both the gas and liquid pipes. Failure to do so may cause water leaks. Use heat insulation with heat resistance above 120 °C (248 °F). (Reverse cycle model only) In addition, if the humidity level at the installation location of the refrigerant piping is expected to exceed 70%, install heat insulation around the refrigerant piping. If the expected humidity level is 70-80%, use heat insulation that is 15 mm (19/32 in.
PAGE 16
6. ELECTRICAL WIRING 6.1. Safety precautions for electrical wiring Power WARNING The rated voltage of this product is 208/230 V A.C. 60 Hz. Before turning on verify that the voltage is within the 187V to 264V range. Use a dedicated power circuit and breaker matched to the capacity of the total of Branch boxes and Indoor units ratings. (Install in accordance with standard.) Perform wiring work in accordance with standards so that the air conditioner can be operated safely and correctly.
PAGE 17
HOW TO CONNECT WIRING TO THE TERMINALS FOR STAND WIRING. English ) in. (1) Use crimp-type terminals with insulating sleeves as 39 (0. shown in the figure below to connect to the terminal block. m Crimp-type terminal 0m (2) Securely crimp the crimp-type terminals to the wires p1 using an appropriate tool so that the wires do not come Stri loose.
PAGE 18
6.3.2 Wiring method Example) Wiring diagram when 3 branch boxes and 8 indoor units are connected Example 1) Outdoor unit BRANCH BOX w 1 2 3 Select the proper power supply (capacity) and the disconnect switch according to the load (total current value of the units connected units).
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6.3.3. Work procedure Screw Control box cover (1) Remove the control box cover and install all the wiring. (Same for primary and secondary units) Fig. B (Primary unit only) Fig. A Knockout hole (To Branch box (Secondary1)) English (2) When connecting to indoor units B or C, remove the matching knockout holes in Fig. A. When connecting to more than 1 branch box, remove the appropriate knockout holes in Fig. B.
PAGE 20
7. TEST RUN AND CHECK LIST Conduct the check run and test run according to the Installation Manual of the outdoor unit. Check the following items before conducting the check run and test run.