Panasonic CZ-256ESMC3 Intelligent Controller Installation Instructions

Introduction

Read through these Installation Instructions before proceeding with the installation. Pay particular attention to the "Safety Precautions" on page 2.

Safety Precautions

Please Read Before Starting

Installation must be performed by a sales dealer or qualified installer. Contact a sales/service outlet or certified dealer for assistance with special problems.

[WARNING] This symbol indicates a hazard that can result in severe personal injury or death.

[CAUTION] This symbol indicates a hazard that can result in personal injury or product/property damage.

• Panasonic assumes no responsibility for accidents or damages resulting from non-standard installation methods or unauthorized parts. Malfunctions due to unauthorized installation are not covered by warranty.
• The controller must be installed in accordance with National Wiring Regulations.
• Perform test operation after installation to confirm normal function.
• Read installation instructions for connected devices.
• Provide these instructions to servicing personnel when relocating or repairing the controller.

WARNING: ELECTRICAL SHOCK HAZARD

Only a qualified, experienced electrician should wire this system. High voltages are present. Improper connections or inadequate grounding can cause injury or death. It is strongly recommended to install with an Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD) to prevent shock and fire from equipment breakdown.

The ELCB must be incorporated in fixed wiring according to regulations and be approved for 10 A with a 3 mm contact separation in all poles.

• Provide a dedicated power outlet for this controller.
• Turn off circuit breakers before installation.
• Do not supply power until all wiring is complete and checked.
• Secure power supply wiring with a clamper to prevent tension on the terminal board, which could cause fire.
• Ground the controller to prevent insulation failure hazards.
• Select a rigid, strong installation location suitable for maintenance.
• Do not modify or disassemble the product; this can cause fire, shock, or injury.
• Do not clean the interior; contact an authorized dealer or specialist.
• Do not operate with wet hands.

CAUTION:

• Ground yourself to discharge static electricity before wiring.
• Avoid installing in locations with:
  • Flammable gas
  • Large amounts of oil mist
  • Direct external air entry (risk of condensation)
  • High-frequency emissions
  • Frequent voltage fluctuations
• Do not wash with water.

NOTICE: English text is original; other languages are translations.

Specifications

*¹ The maximum number of connectable units is shown below:

• When using only this unit: 128 indoor units and 60 outdoor units
• When connecting a Communication Adaptor: 256 indoor units and 120 outdoor units

*² The number of indoor units includes the Interface Adaptor.

Supplied Accessories

• Screw (M4×10) <4>
• Washer <4>
• Nut (M4) <4>
• Clamper <4>
• Instructions and License List (DVD), Quick Reference, Installation Instructions

* Wiring are not included (field supplied item).

Dimensions (Part Names)

The controller has dimensions of 240 mm (width) x 280 mm (height) x (20 + 65) mm (depth). Key components visible on the front panel include a LAN terminal, a USB terminal, and a Power indicator that illuminates when power is on. The storage door can be opened by pushing lightly.

A symbol on the controller refers to "Protective earth" [?].

Caution for Network Connection

• Connecting to the Internet allows remote operation and status checking via PC.
• Implement security measures against illegal external access when connecting to the Internet. Consult a network administrator for detailed connection and setup methods.

Installation Precautions

Installation Location

• Avoid locations:
  • Under direct sunlight
  • Near heat sources
  • Where splashed with water or affected by dampness/humidity
  • On uneven surfaces
  • Subject to excessive vibration or physical impacts (risk of screws loosening and controller dropping).
• Install the controller vertically to the floor.
• Ensure the location has suitable temperature and humidity.
• Do not install near equipment generating high-frequency emissions (e.g., medical equipment) as it may cause interference and accidents.
• Install at least 1 meter away from TVs, radios, PCs, etc., to prevent fuzzy images or noise.

General Precautions on Wiring

• Wire diameter regulations vary by locality; refer to LOCAL ELECTRICAL CODES. Ensure compliance with all relevant rules.
• Use field-supplied wiring with at least 1 mm insulation thickness (including sheath).
• Connect all wiring tightly to prevent terminal board loosening from external force, which can cause fire or overheating.
• Use putty (field supplied) to seal wiring holes in the control box.
• Do not run power supply wiring and other wirings through the same conduit. Maintain maximum distance to minimize noise influence.
• Do not bundle power supply wiring and other wiring in the same conduit, as this can cause operational errors due to noise.
• Do not bury wiring in the ground.

Mounting

Design Control Box

For heat dissipation, the control box should have vents (slits) on the upper and lower parts of both left and right sides. The temperature inside the control box must not exceed 40 °C. Ensure these vents are not blocked.

Mounting Position

Diagrams show recommended clearances around the control box for airflow: 100 mm or more above, 100 mm or more below, 150 mm or more to the front, and 50 mm or more to the sides.

How to Mount (Control Box)

The mounting process involves:

1. Removing the panel-fixing screw and panel from the upper side.
2. Installing the controller unit into the control box using the supplied screws (M4×10), nuts (M4), and washers.
3. Reinstalling the panel using the panel-fixing screw (M3×6).

Preparations for Wiring

Power Supply Wiring

• Use a dedicated line for the power source.
• Earth the controller.
• Do not connect earth wiring to gas pipes, water pipes, lighting rods, or telephone lines.
• Recommended wiring: Flexible wiring of 2 mm². Use standard European wiring (H05RN-F or H07RN-F) or IEC standard wiring (60245 IEC57, 60245 IEC66).
• Total wire length: 30 m or less.

Inter-Unit Control Wiring

• Type of wiring: Flexible shield wiring of 0.5 to 2 mm².
• No polarity required.
• Total wire length: 1000 m or less.
• Refer to Specifications (P.2) for the number of connectable units and devices.

Communication Adaptor Control Wiring

• Polarity (+/-) is present.
• Up to 7 Communication Adaptors can be connected.
• Refer to the "Installation Instructions" supplied with the Communication Adaptor for wiring type and total length.

External I/O Wiring

• Type of wiring: Flexible wiring of 0.5 to 2 mm².
• Wire length: 20 m or less.
• Use shield wiring if the location is susceptible to noise.

LAN Cable

• Type of wiring: Category 5 or above straight cable.
• Wire length: 100 m or less.

Attention: Ground the shield on both sides of shield wiring to prevent operational errors from noise.

Wiring

Basic Wiring Diagram

The diagram illustrates connections for power supply (100-240 V~ 50-60 Hz), outdoor units, indoor units, and Communication Adaptors. It shows power supply wiring, inter-unit control wiring (no polarity), and Communication Adaptor control wiring (polarity present).

Steps for Wiring:

1. Turn off the circuit breaker before connecting wiring.
2. Attach Ring Pressure Terminal: For power supply and shield wiring, process the wire ends and attach the ring pressure terminal. This involves removing wire coating, covering with tape, and attaching the terminal.
3. Remove the power switch cover.
4. Wiring Connections:
   • Power Supply: Connect power supply wiring and earth wiring to the respective terminal boards. Do not over-tighten screws.
   • Inter-Unit Control: Connect the shield part of shield wiring to terminal No. 0 (FG) on the signal terminal board (TB2). Do not over-tighten. No polarity is required.
   • Communication Adaptor Control: Ensure polarities (+/-) are correct. Refer to the Communication Adaptor's installation instructions.
   • Connecting External Equipment: Refer to "Connecting to External Equipment" (P.5).
5. Secure all wiring with the supplied clamper to prevent tensile force on terminal connections.
6. Connect the LAN cable.
7. After all wiring is complete, turn the circuit breaker on. Before powering on, measure the voltage at the power supply terminal board to ensure it is within the specified range. Incorrect voltage can blow the fuse or damage the unit.

Wiring (continued)

Power Supply and Terminal Boards: The power supply wiring (AC 100-240V) passes through a power-in port. The power supply terminal board (TB1) and earth terminal board are shown. The earth wiring should be longer than the power line (L, N). Clamps secure the wiring.

Signal Terminal Board (TB2) Connection:

• Connect shield wiring for inter-unit control wiring to ground (FG*4) at terminal 0.
• Connect inter-unit control wiring (LINK1/LINK2) to terminals 1, 2, 4, 5.
• Connect Communication Adaptor control wiring (ADAPT +,-,FG*4) to terminals 14, 15, 16.

Important Note: Mistakenly connecting power supply wiring to a non-power supply terminal board will cause malfunction.

Connecting to External Equipment

This section details connections for non-voltage contact "a" type inputs and outputs.

• External I/O wiring length should be 20 meters or less; use a Communication Adaptor or relay for longer distances.
• A DC5 V (approx. 10 mA) voltage is applied for input signal detection; do not apply external voltage to input terminals.
• Output terminals support a maximum of DC30 V and 0.5 A.

Pulse meter input: Accepts non-voltage contact "a" pulse signals. Minimum pulse width is 30 msec or more, or 100 msec or more (selectable). Minimum pulse interval is 1 sec.

External output: Non-voltage contact "a" static type. Includes Common (COM2) and Digital outputs (DO1, DO2).

External input: Non-voltage contact "a" static type. Includes Common (COM3) and Digital inputs (Di1, Di2, Di3). Used for demand control.

Setting and Test Operation

Follow these steps for setup and verification:

1. Turn on all indoor and outdoor units.
2. Turn on the Communication Adaptor (if connected) and perform necessary settings as per its installation instructions.
3. Turn on this unit.
4. Reattach the power switch cover, ensuring no wires are caught.
5. Refer to the "Quick Reference" guide to check:
   • Correct display of clock setting and number of connected units.
6. Set the central address and other necessary parameters (unit name, area, distribution settings).
7. Verify proper operation of indoor units and correct status display.
8. Refer to the "Service Manual", "Test Run Service Manual", or "Technical Data" for:
   • Communication settings with the air conditioner.
   • Confirmation of connection configuration.