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Panasonic S-12MY2U6 Installation Instructions Manual

Vrf system
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INSTALLATION INSTRUCTIONS

– VRF System Air Conditioner –
This air conditioner uses the refrigerant R410A.
Model No.
Indoor Units
Nominal Capacity
Type
Indoor Unit Type
12
18
S-12MY2U6
S-18MY2U6
Y2
4-Way Cassette 60×60
(CZ-18KPY2U)*
(CZ-18KPY2U)*
*Panel (optional parts)
Read through the Installation Instructions before you proceed with the installation.
In particular, you will need to read under the "IMPORTANT!" section at the top of the page.
F616471

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Summary of Contents for Panasonic S-12MY2U6

  • Page 1: Installation Instructions

    – VRF System Air Conditioner – This air conditioner uses the refrigerant R410A. Model No. Indoor Units Nominal Capacity Type Indoor Unit Type S-12MY2U6 S-18MY2U6 4-Way Cassette 60×60 (CZ-18KPY2U)* (CZ-18KPY2U)* *Panel (optional parts) Read through the Installation Instructions before you proceed with the installation.

  • Page 2: Important

    IMPORTANT! When Transporting Please Read Before Starting Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees This air conditioning system meets strict safety and when lifting to reduce strain on your back. Sharp edges or operating standards.

  • Page 3: Check Of Density Limit

    • Do not leak refrigerant while piping work for an installation or re-installation, and while repairing CAUTION refrigeration parts. Handle liquid refrigerant carefully as it may cause • Do not touch the air inlet or the sharp frostbite. aluminum fins of the outdoor unit. You When Servicing may get injured.

  • Page 4: Table Of Contents

    CONTENTS Page Page IMPORTANT! ........2 8.

  • Page 5: General

    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. 1-1.

  • Page 6: Selecting The Installation Site

    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. ●...

  • Page 7: How To Install The Indoor Unit

    3. HOW TO INSTALL THE INDOOR UNIT 3-1. Preparation for Ceiling Suspension This unit uses a drain pump. Use a carpenter’s level to check that the unit is level. 3-2. Ceiling Opening Dimensions and Hanging Bolt Location This air conditioner uses a drain up motor. Horizontally install the unit using a carpenter’s level. The paper model for installation expand or shrink according to temperature and humidity.

  • Page 8: Installing The Drain Pipe

    3-4. Installing the Drain Pipe Hose clip (Accessory) Heat insulator (Local supply) (The thickness must be at least 5/16” (8 mm).) Flexible hose with heat insulator (Accessory) PVC pipe (O.D. ø1-17/64” (ø32mm)) (Local supply) To be glued It may be required to take off this part for checking or servicing the drain up motor. Please do not glue. Make sure that there is no clearance here.

  • Page 9: Electrical Wiring

    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. WARNING (2) This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD).

  • Page 10: Wiring System Diagrams

    4-3. Wiring System Diagrams Indoor unit (No. 1) Outdoor unit INV unit Power supply Ground 208/230V, 60Hz, 1PH Power supply Ground 208/230V, 60Hz, 3PH Ground Remote controller Ground Ground Indoor Inter-outdoor unit control wiring unit (No. 2) Power supply Ground Outdoor unit 208/230V, 60Hz, 1PH INV unit...
  • Page 11 CAUTION (1) When linking the outdoor units in a network, disconnect the terminal extended from the short plug (on the outdoor main control PCB) from all outdoor units except any one of the outdoor units. (When shipping: In shorted condition.) For a system without link (no connection wiring between outdoor units), do not remove the short plug.

  • Page 12: For Stranded Wiring

    Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard may also occur. CAUTION 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” and fasten the wire securely with the fixing screw of the terminal board.

  • Page 13: How To Process Tubing

    5. HOW TO PROCESS TUBING Deburring Before After The liquid tubing side is connected by a flare nut, and the gas tubing side is connected 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.

  • Page 14: Connecting Tubing 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.

  • Page 15: Insulating The Refrigerant Tubing

    5-3. Insulating the Refrigerant Tubing Tubing Insulation Two tubes arranged together ● Thermal insulation must be applied to all units tubing, including Gas tubing Liquid tubing distribution joint (local supply). * For gas tubing, the insulation material must be heat resistant to 248°F (120°C) or above.

  • Page 16: Taping The Tubes

    5-4. Taping the Tubes (1) At this time, the refrigerant tubes (and electrical wiring if local codes permit) should be taped together with armoring tape in 1 bundle. To prevent condensation from overflowing the drain pan, keep the drain hose separate from the refrigerant tubing. (2) Wrap the armoring tape from the bottom of the outdoor unit Clamp to the top of the tubing where it enters the wall.

  • Page 17: Installation Of Decorative Panel

    8. INSTALLATION OF DECORATIVE PANEL Remove the screws with Phillips head screwdriver. When using the wireless remote contoller, follow the step 8-3 “When Using Wireless Remote Controller Instead of Wired Remote Controller” before installing the decorative panel. 8-1. Before Installing the Decorative Panel (1) Remove the air-intake grille and air filter from the decorative panel.

  • Page 18: When Using Wireless Remote Controller Instead Of Wired Remote Controller

    (3) Fit the decorative panel and ceiling wall together, making sure that there is no gap between the two. Readjust indoor unit height, if there is a gap between ceiling wall and decorative panel. Good example Bad example Air conditioner unit Cool air leakage Air conditioner unit (no good)

  • Page 19: Appendix

    10. APPENDIX ■ Care and Cleaning Switch off the power supply before CAUTION cleaning. CLEANING INSTRUCTIONS ● Do not use benzene, thinner or scouring powder. Air Filter Installation ● Use only soap ( pH7) or neutral household detergent. ● Do not use water hotter than 104°F (40°C). Insert the air filter NOT E to the tabs of the...
  • Page 20 ■ Troubleshooting If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or a service center. Indoor unit ● Symptom Cause Sound like streaming water during Sound of refrigerant liquid flowing inside unit ●...
  • Page 21 Check Before Requiring Services ● Symptom Cause Remedy Press ON/OFF operation button on remote controller Power failure or after power failure again. Air conditioner does not run at Switch on power if breaker is turned off. ● all although power is turned on. Operation button is turned off.
  • Page 22 – NOTE –...
  • Page 23 – NOTE –...
  • Page 24 F616471 Printed in Malaysia DC0414-10814...

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S-18my2u6

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