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In case of using R32, confirm the room space and the amount of refrigerant in advance. Install the optional “R32 refrigerant leakage detection sensor” as needed. (See Section “Check of Density Limit”.) Model No. Indoor Units Rated Capacity Indoor Type Units Type 4-Way S-22MU2E5BN S-28MU2E5BN S-36MU2E5BN S-45MU2E5BN S-56MU2E5BN S-60MU2E5BN Cassette (CZ-KPU3**)* (CZ-KPU3**)*...
• IMPORTANT! Pay close attention to all warning and caution notices given in this manual. Please Read Before Starting This symbol refers to a hazard or unsafe practice which can result in This air conditioner must be installed by the sales dealer WARNING severe personal injury or death.
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• Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans. •...
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WARNING • When performing piping work, do not mix air except for specified refrigerant in refrigeration cycle. It causes capacity down, and risk of explosion and injury due to high tension inside the refrigerant cycle. • If the refrigerant comes in contact with a flame, it produces toxic gases and fires. •...
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When Servicing • Contact the sales dealer or service dealer for a repair. • Ventilate the room by opening windows before servicing if there is a possibility of a refrigerant leakage. • Be sure to turn off the power before servicing. •...
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SERVICING CAUTION • Any qualified person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorizes their competence to handle refrigerants safely in accordance with an industry recognised assessment specification. •...
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Marking to the equipment continues to be visible and legible. Markings and signs • that are illegible shall be corrected. Refrigerating pipe or components are installed in a position where they are • unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being so corroded.
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REMOVAL AND EVACUATION CAUTION • When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, it is important that best practice is followed since flammability is a consideration. The following procedure shall be adhered to: Remove refrigerant.
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Recovery equipment and cylinders conform to the appropriate standards. • d) Pump down refrigerant system, if possible. e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system. f) Make sure that cylinder is situated on the scales before recovery takes place. g) Start the recovery machine and operate in accordance with instructions.
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Check of Density Limit Check the amount of refrigerant in the system and floor space of the room according to the legislation on refrigerant drainage. If there is no applicable legislation, follow the standards described below. The refrigerant (R32), which is used in the air conditioner, is a flammable refrigerant. So the requirements for the maximum refrigerant charge amount [m ] used in the appliance are determined according to installation space of the appliance.
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< Whether or not to use R32 refrigerant leakage detection sensor > • According to the type of diagrams shown in Fig. 2, it is necessary to install R32 refrigerant leakage detection sensor if the installation space is within the range of using R32 refrigerant leakage detection sensor.
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The refrigerant charge amount compared with the floor area of the room is roughly as follows: Fig. 2 4-Way Cassette Type 22 20.0 Type 28 Type 36 U-8LZ2E8, U-10LZ2E8 15.0 Use of R32 refrigerant leakage detection sensor 10.0 U-4LZ2E5, U-5LZ2E5, U-6LZ2E5 U-4LZ2E8, U-5LZ2E8, U-6LZ2E8 Nonuse of R32 refrigerant leakage detection sensor Floor area of the room (m...
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Type 60 20.0 Use of R32 refrigerant leakage detection sensor 15.0 U-8LZ2E8, U-10LZ2E8 10.0 U-4LZ2E5, U-5LZ2E5, U-6LZ2E5 U-4LZ2E8, U-5LZ2E8, U-6LZ2E8 Nonuse of R32 refrigerant leakage detection sensor Floor area of the room (m Type 73 20.0 Type 90 Use of R32 refrigerant leakage detection sensor 15.0 U-8LZ2E8, U-10LZ2E8 10.0...
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4-Way Cassette Use or nonuse of R32 refrigerant leakage Nonuse detection sensor 22~ 160 73, 90 106~ Capacity of indoor unit Refrigerant charge amount (kg) 10.1 10.1 10.1 11.1 11.1 11.1 11.7 12.0 12.1 (12.0) 11.7 12.0 13.1 (12.0) 11.7 12.0 14.1 (12.0) 11.7...
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4-Way Cassette Use or nonuse of R32 refrigerant leakage Nonuse detection sensor 22~ 160 73, 90 106~ Capacity of indoor unit Refrigerant charge amount (kg) 11.3 11.3 11.3 11.3 11.7 12.0 15.9 (12.0) 11.5 11.5 11.5 11.5 11.7 12.0 15.9 (12.0) 11.6 11.6 11.6...
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The refrigerant charge amount compared with the floor area of the room is roughly as follows: Fig. 2 4-Way Cassette (3-way airflow) Type 22 20.0 Type 28 Type 36 U-8LZ2E8, U-10LZ2E8 15.0 Use of R32 refrigerant leakage detection sensor 10.0 U-4LZ2E5, U-5LZ2E5, U-6LZ2E5 U-4LZ2E8, U-5LZ2E8, U-6LZ2E8 Nonuse of R32 refrigerant leakage detection sensor...
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Type 60 20.0 U-8LZ2E8, U-10LZ2E8 15.0 Use of R32 refrigerant leakage detection sensor 10.0 U-4LZ2E5, U-5LZ2E5, U-6LZ2E5 U-4LZ2E8, U-5LZ2E8, U-6LZ2E8 Nonuse of R32 refrigerant leakage detection sensor Floor area of the room (m Type 73 20.0 Type 90 U-8LZ2E8, U-10LZ2E8 15.0 Use of R32 refrigerant leakage detection sensor 10.0...
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4-Way Cassette (3-way airflow) Use or nonuse of R32 refrigerant leakage Nonuse detection sensor 22 ~ 160 73, 90 106~ Capacity of indoor unit Refrigerant charge amount (kg) 10.1 11.1 12.1 (12.0) 13.1 (12.0) 14.1 (12.0) 15.1 (12.0) 15.9 (12.0) 15.9 (12.0) 15.9 (12.0) 15.9 (12.0)
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4-Way Cassette (3-way airflow) Use or nonuse of R32 refrigerant leakage Nonuse detection sensor 22 ~ 160 73, 90 106~ Capacity of indoor unit Refrigerant charge amount (kg) 11.3 11.3 11.3 11.3 11.3 11.3 15.9 (12.0) 11.5 11.5 11.5 11.5 11.5 11.5 15.9 (12.0)
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The refrigerant charge amount compared with the floor area of the room is roughly as follows: Fig. 2 4-Way Cassette (2-way airflow) Type 22 20.0 Type 28 Type 36 U-8LZ2E8, U-10LZ2E8 15.0 Use of R32 refrigerant leakage detection sensor 10.0 U-4LZ2E5, U-5LZ2E5, U-6LZ2E5 U-4LZ2E8, U-5LZ2E8, U-6LZ2E8 Nonuse of R32 refrigerant leakage detection sensor...
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Type 60 20.0 U-8LZ2E8, U-10LZ2E8 15.0 Use of R32 refrigerant leakage detection sensor 10.0 U-4LZ2E5, U-5LZ2E5, U-6LZ2E5 U-4LZ2E8, U-5LZ2E8, U-6LZ2E8 Nonuse of R32 refrigerant leakage detection sensor Floor area of the room (m Type 73 20.0 Type 90 U-8LZ2E8, U-10LZ2E8 15.0 Use of R32 refrigerant leakage detection sensor 10.0...
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4-Way Cassette (2-way airflow) Use or nonuse of R32 refrigerant leakage Nonuse detection sensor 22 ~ 160 73, 90 106~ Capacity of indoor unit Refrigerant charge amount (kg) 10.1 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0 11.0...
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4-Way Cassette (2-way airflow) Use or nonuse of R32 refrigerant leakage Nonuse detection sensor 22 ~ 160 73, 90 106~ Capacity of indoor unit Refrigerant charge amount (kg) 11.3 11.3 11.3 11.3 11.3 11.3 11.3 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.6...
1. GENERAL This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning. The installation of pipe-work shall be kept to a minimum.
As for S-60MU2E5BN, S-73MU2E5BN or S-90MU2E5BN, the following accessories are additionally provided. Figure Q’ty Remarks Part Name Gas socket tube A : Different- ø15.88 → ø12.7 diameter-tube Liquid socket tube B : joint ø9.52 → ø6.35 Protection tape for the fan Insulating For gas and liquid tape...
2. SELECTING THE INSTALLATION SITE 2-1. Indoor Unit AVOID: ● areas where leakage of flammable gas may be expected. ● places where large amounts of oil mist exist. ● direct sunlight. ● locations near heat sources which may affect the performance of the unit. ●...
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Installation location of R32 refrigerant leakage detection sensor When installing R32 refrigerant leakage detection sensor away from the indoor unit, place it at 300 mm or less from a floor surface and satisfy the condition either (1) or (2) below. (1) If no obstacles exist in a straight line from R32 refrigerant leakage detection sensor to the indoor unit, wall distance should be within 10 m in horizontal straight line.
3. HOW TO INSTALL THE INDOOR UNIT Note: For DC Fan Tap Change Procedure for 4-Way Cassette, see Section “7-3. Others”. 3-1. Preparation for Suspending This unit uses a drain pump. Use a carpenter’s level to check that the unit is level. 3-2.
3-3. Placing the Unit Inside the Ceiling This unit is equipped with a drain pump. Check with a tape measure or carpenter’s level. Before installing the panel for cassette, complete the work of drain pipe and refrigerant tube installation. (1) When placing the unit inside the ceiling, determine the pitch of the suspension bolts using the supplied full-scale installation diagram.
3-5. Installing the Drain Pipe 3-5-1. Before Performing the Installation of Drain Piping (1) Limitations of Raising the Drain Pipe Connection CAUTION ● The drain pipe can be raised to a maximum height of 850 mm from the bottom of the ceiling. Do not attempt to raise it higher than 850 mm.
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(3) Limitations of Drain Hose Connection CAUTION ● Do not bend the supplied drain hose 90° or more. Bend it less than 45°. Bend angle 90° prohibited Bend angle less than 45° ● Do not make a trap in the middle of the supplied drain hose. Doing so will cause abnormal sound.
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3-5-2. Installing the Drain Pipe CAUTION ● Do not apply force to the drain port when connecting the drain pipe. Install and fix it near the indoor unit as close as possible. ● Do not use adhesive when connecting the drain port pipe and the drain hose. (1) How to Install the Drain Pipe 1) First insert the supplied hose band into the drain port pipe.
3-5-3. Checking the Drainage Be careful since the fan will start when you short the pin on the indoor CAUTION unit control PCB. After wiring (see Section “4. ELECTRICAL WIRING”.) and drain piping are completed, use the following procedure to check that the water will drain smoothly. For this, prepare a bucket and wiping cloth to catch and wipe up spilled water.
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(3) Remove the lid located on the bottom of the indoor unit attaching the electrical component box by unscrewing the Phillips head tapping screws (×2). Tapping screw position (4) Lead the wires from the power supply inlet to the unit. Be sure to lead the wires through the power supply inlet.
4. ELECTRICAL WIRING 4-1. General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram under Section 4-3. WARNING (2) This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD).
4-2. Wire Length and Wire Diameter for Power Supply System Indoor unit (B) Power supply cable Type Time delay fuse or circuit capacity Min. 2.5 mm Max. 130 m * 15 A Control wiring (C) Inter-unit (between outdoor and (E) Remote control wiring for group (D) Remote control wiring indoor units) control wiring control...
4-3. Wiring System Diagrams ex.) Indoor unit Outdoor unit : U-4LZ2E5, U-5LZ2E5, U-6LZ2E5 (No. 1) Power supply Power supply 220-230-240V~ 50Hz 220-230-240V~ 50-60Hz Ground Ground Remote controller ex.) Indoor unit Outdoor unit : U-4LZ2E8, U-5LZ2E8, U-6LZ2E8 (No. 2) Power supply Power supply 220-230-240V~ 50-60Hz 380-400-415V 3N~ 50Hz...
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CAUTION (1) When linking the outdoor units in a network, disconnect the terminal extended from the short plug from all outdoor units except any one of the outdoor units. (When shipping: In shorted condition.) For a system without link (no wiring connection between outdoor units), do not remove the short plug.
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WARNING Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard may also occur. Therefore, ensure that all wiring is tightly connected. When connecting each power wire to the terminal, follow the instructions on “How to connect wiring to the terminal”...
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■ Wiring samples Functional ground screw (External Electronic Expansion Valve Kit and Schedule Timer) Protective ground screw (External Solenoid Valve Kit for 3WAY) R32 refrigerant leakage detection sensor wiring Protective ground screw Remote control wiring Inter-unit control wiring Earth wiring: Make the earth wiring 25 - 30 mm longer than power cable.
5. HOW TO PROCESS TUBING Must ensure mechanical connections be accessible for maintenance purposes. When connecting the tube size ø19.05 with the system using refrigerant R32, be sure to connect by brazing. 5-1. Connecting the Refrigerant Tubing Use of the Flaring Method Many of conventional split system air conditioners employ the flaring method to connect refrigerant tubes that run between indoor and outdoor units.
Cautions During Brazing ● Replace air inside the tube with nitrogen gas to prevent copper oxide film from forming during the brazing process. (Oxygen, carbon dioxide and Freon are not acceptable.) ● Do not allow the tubing to get too hot during brazing. The nitrogen gas inside the tubing may overheat, causing refrigerant system valves to become damaged.
Flare insulator (supplied) Different-diameter-tube joint Insulating tape Insulating tape (supplied) (supplied) Unit side Tube insulator (not supplied) Heat resistant 120°C or above Flare nut Flare union * Illustration shows when using by S-60MU2E5BN, S-73MU2E5BN or S-90MU2E5BN. (Only LZ2 series) Insulation material The material used for insulation must have good insulation characteristics, be easy to use, be age resistant, and must not easily absorb moisture.
5-5. Finishing the Installation Apply putty here After finishing insulating and taping over the tubing, use sealing putty to seal off the hole in the wall to prevent rain and draft from entering. Tubing 6. HOW TO INSTALL THE TIMER REMOTE CONTROLLER OR HIGH-SPEC WIRED REMOTE CONTROLLER (OPTIONAL PART) NOT E...
7. HOW TO INSTALL THE PANEL FOR CASSETTE Accessories Panel for cassette ×1 Screws ×4 4 × 12 7-1. Preparation for Panel for Cassette Installation (1) Checking the unit position 1) Check that the ceiling hole is within this range: 860 mm ×...
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3) With the air intake grille opened, remove the grille hinge from the panel for cassette by sliding it in the direction shown by the arrow 2 . (Reattach the air intake grille after installation of the panel for cassette.) (2) Removing the corner cover Push the latches on the corner cover in the direction of the arrow 1 and remove them by sliding in the direction of the arrow 2 .
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2) Align the panel installation holes and the unit screw holes. 3) Tighten the provided washer head screws at the 4 panel installation locations so that the panel is attached tightly to the unit. Drain tube corner Refrigerant tube corner Marking with DRAIN Panel for cassette Marking with REF.
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(4) Wiring the Panel for Cassette 1) Open the cover of the electrical component box for the indoor unit control PCB. 2) Connect the 22P connector (white) from the panel for cassette to the connector on the indoor unit control PCB in the unit electrical component box. In this case, expose the cutout section of the tube for the wiring protection to the outside from the electrical component box and fix it with the clamper attached to the electrical component box.
Corner cover installation Can be installed rotated 90° position marked with the Electrical component Panasonic Logo at shipment. * Installation possible at any of 4 corners 7-3. Others (1) Checking After Installation 1) Check that there are no gaps between the unit and the panel for cassette, or between the panel for cassette and the ceiling surface.
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(3) Selecting DC Fan Motor Tap (4-Way Cassette) Check the optional parts accordingly in the following table. Table for DC Fan Motor Tap Settings Remote controller setting Setting No. Contents & optional parts name data Item code 5d Air-flow blocking kit (for 3-way airflow)* 0001 Air-flow blocking kit (when a duct is connected.)* High-ceiling setting 1*...
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<Procedure of CZ-RTC5B> Stop the system before performing these steps. 20:30 (THU) 1 Keep pressing the buttons simultaneously for 4 or more seconds. The “Maintenance func” screen appears on the START LCD display. Maintenance func 20:30 (THU) 1. Outdoor unit error data 2.
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<Procedure of CZ-RTC4> Stop the system before performing these steps. ° 1 Press and hold the buttons ° simultaneously for 4 seconds or longer. 2 If group control is in effect, press the button to set. At this time, the fan at the indoor unit begins and select the address (unit No.) of the indoor unit operating.
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<Procedure of CZ-RTC6 series> Stop the system before performing these steps. 1 Keep pressing the buttons simultaneously for 4 or more seconds. The “Maintenance func” screen appears on the LCD display. Maintenance func XX / XX ECONAVI nanoeX RC. setting mode Black 2 Press the button to see each menu.
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(4) Setting the Flap Separately 1) The 4-air outlet flap can be adjusted separately during operation. When not adjusted separately, all flaps operate in the same manner. Air outlet flap (adjustment for up-down airflow direction) <Procedure of CZ-RTC5B> Refer to Section “Flap Setting for Each Air Outlet” in the Operating Instructions attached to the optional High-spec Wired Remote Controller.
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<Procedure of CZ-RTC6 series> Stop the system before performing these steps. 1 Keep pressing the buttons simultaneously for 4 or more seconds. The “Maintenance func” screen appears on the LCD display. Maintenance func XX / XX ECONAVI nanoeX Black RC. setting mode 2 Press the button to see each menu.
5 Select one of the Setting Data “YYYY” by pressing the Detailed settings button. Unit no. Code no. 0000XX * Setting data “YYYY” Flap position Set data YYYY 0001 Setting data Flap position during operation Confrm 0000 Without separate setting 0001 Swing 0002...
9. PRECAUTIONS ON TEST RUN ● Request that the customer be present when the test run is performed. At this time, explain the operation manual and have the customer perform the actual steps. ● Check that the 220 – 240 VAC power is not connected to the inter-unit control wiring connector terminal.
10. CHECKLIST AFTER INSTALLATION WORK □ Work List Content Check Possibility of Failure & Checkpoint Are the indoor units installed following the □ There is a possibility of light injure or loss of Installation content of Section “2. SELECTING THE property.
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11. APPENDIX ■ Care and Cleaning WARNING ● For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning. ● Do not pour water on the indoor unit to clean it. This will damage the internal components and cause an electric shock hazard.
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NOTE The frequency with which the filter should be cleaned depends on the environment in which the unit is used. Clean the filter frequently for best performance in the area of dusty or oil spots regardless of filter status. <How to clean the filter> 1.
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Care: After a prolonged idle period Check the indoor and outdoor unit air intakes and outlets for blockage; if there is a blockage, remove it. Care: Before a prolonged idle period ● Operate the fan for half a day to dry out the inside. ●...
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Symptom Cause Poor cooling or heating performance The indoor unit is initially designed to control the indoor temperature detected by the built-in room sensor inside the indoor unit. Due to indoor unit installation position, however, the built-in sensor may occasionally sense temperature improperly; for example, temperature difference between the ceiling and floor, lighting apparatus, electric fan, windows or waist-high partition walls, etc.
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■ Tips for Energy Saving Avoid ● Do not block the air intake and outlet of the unit. If either is obstructed, the unit will not work well, and may be damaged. ● Do not let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls and ceiling of the room are warmed by the sun, it will take longer to cool the room.
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