Toshiba Carrier Central Remote Controller

1 Safety Precautions

Read these "Safety Precautions" carefully before installation. Observe them without fail. Understand the indications and symbols used in this manual. After installation, perform a trial operation and explain usage and maintenance to the customer. Keep this manual in an accessible place for future reference.

Display Description & Symbol Description

WARNING: Indicates content that is expected to result in death or serious injury in case of incorrect handling. Symbols indicate prohibited actions (?) or required actions (✅).

CAUTION: Indicates content that is expected to result in minor injury or property damage in case of incorrect handling. Symbols indicate required instructions (✅).

*1: Serious injury refers to lasting after-effects such as blindness, burns, electric shock, bone fracture, poisoning, etc., requiring hospitalization or long-term outpatient treatment.

*2: Minor injury refers to injuries, burns, or electric shocks not requiring hospitalization or long-term outpatient treatment.

*3: Damage to property refers to extended damage to houses, goods, livestock, or pets.

WARNING

• Do not modify the unit. Risk of fire or electric shock.
• Always connect to ground. Improper grounding may result in electric shock. Ensure Class D grounding according to engineering standards.
• Electrical work must be performed by a qualified electrician, satisfying all local, national, and international regulations. Inappropriate work may result in electric shock or fire.
• Turn off all main power supply switches before starting any electrical work. Failure to do so may result in electric shock.

CAUTION

• Do not install in locations with combustible gas, high humidity, water, dust, direct sunlight, high temperatures, near televisions/radios (within 1m), exposed to rain/dew, corrosive gases/salinity, or frequent vibrations.
• Use wiring with the correct ampacity to prevent excessive heat or fire.
• Use specified cables, connect them securely, and do not subject terminals to external force to avoid broken cables or excessive heat/fire.
• Always install a circuit breaker on the primary side of the power supply.
• When attaching to metal lath, wire lath, or wooden structures with metal boards, attach to the control panel, not directly to the wall.

2 Specifications

Product Details

Outline Drawing

The outline drawing shows the dimensions of the unit. Key dimensions include:

• Height: 4.72" (120 mm)
• Width: 4.72" (120 mm)
• Depth: 0.78" (20 mm) plus an additional 1.99" (50.6 mm) for embedded components.
• Mounting hole pattern is approximately 3.74" (95 mm) square with four screw holes.

3 Installation

3-1. Power, Signal, and Ground Connections

Connect the power, signal, and ground wires to the specified terminal blocks. Ensure round crimp terminals are used and tightened securely.

Connecting the Power Supply Wire and Ground Wire

1. Remove 3 cover fixing screws and open the cover.
2. Insert cross notches in the rubber bushing to pass the power supply cable.
3. Pass the power supply cable through the rubber bushing and clamp, connecting the power supply wire and ground wire to the specified terminal block.
4. Close the cover and secure with the 3 cover fixing screws.

Connecting the Signal Wires

Connect the TU2C-LINK / TCC-LINK signal wire (Uh / U3U4) to the terminal block. Secure the cable with a clamp and fasten screws to a torque of 1.0 N•m.

Note on TU2C-LINK / TCC-LINK: This connection does not have polarity. Connect the shield of the central control wiring to the ground on the air conditioner side. Leave the shield open (and insulate it); do not connect it to the terminal block.

About Stripping Length

Specific wire stripping lengths are provided for power supply wires (1.18" / 30mm), central control wiring (0.59" / 15mm), and digital I/O cables.

Termination Resistance Setting

For TCC-LINK, leave one termination resistance line ON at the outdoor unit interface board and turn others OFF. For TU2C-LINK, set the termination resistance farthest away on the wiring between this central controller and other units to ON.

Shield Grounding Process

For single-unit systems, open the shielded wire of the central control wiring and perform insulation processing. For multi-unit systems, connect the shield to the closed end and open the shield at the final end for insulation processing. Perform shield grounding on the air conditioner side.

REQUIREMENT

• Install a circuit breaker or all-pole isolating switch (with a contact breaking distance of at least 0.12" (3 mm)) on the primary side of the power supply.
• Fasten terminal block screws with a torque of 0.37 lbf•ft (0.5 N•m).

3-2. How to Install

CAUTION: Do not run communication lines or input/output wiring next to power supply wiring or house them in the same metal pipe, as this may cause failure. Install the controller away from noise sources.

Installing to Control Board (Control Panel) or Wall

The thickness of the board or wall must be between 0.06" and 0.39" (1.6 mm to 10 mm).

1. Prepare installation holes as per the diagram (Panel cut dimensions diagram).
2. Remove one panel fixing screw and open the panel.
3. Attach the lower case using the four included fixing screws.
4. Close the panel and secure it with one panel fixing screw.

Panel Cut Dimensions Diagram: A square hole of approximately 3.74" (95 mm) width and 3.30" (84 mm) height is required, with four screw holes located at the corners.

4 Central Remote Controller Test Run

Follow the procedure below to monitor and operate air conditioners.

1. Turn on all connected equipment

Ensure indoor units, outdoor units, and general purpose equipment control interfaces are powered on.

2. Turn on the power of the Central Remote Controller

• A Central control address must be assigned to indoor units.
• A Central Remote Controller or wired remote control is needed to set the Central control address.
• Set the Central control address after finishing the indoor unit test run.
• For settings via the Central Remote Controller, complete initial communication with all connected units first. Wait at least 10 minutes after powering on the air conditioner before configuring settings.

NOTE: If Central control address settings are configured before initial communication is complete, addresses may not be set for some units. For TCC-LINK models, connect U3 and U4 terminals in the outdoor unit to relay connectors.

3. Register the indoor units

Access the "Servicing Menu" via the "All" screen (press [Menu] and [Control] simultaneously for 4 seconds). Perform "Obtain Address" under "Address Settings". After checking for errors, proceed with address registration.

4. Assign indoor units to zones 1 to 10

Use "Zone Settings" to assign indoor units to zones. Verify the displayed number of units on the "All" screen matches the registered zone count.

5. Operation confirmation

Check if indoor units can be operated from the Central Remote Controller and if local remote controller operations are reflected.

6. Preparation for delivery

If an inspection code occurs, perform "Delete check history". Refer to the Owner's Manual and Installation Manual for detailed settings.

5 "Servicing Menu" Settings

How to Display the "Servicing Menu" Screen

1. Display the "All" screen.
2. Press the [Menu] and [Control] buttons simultaneously for over 4 seconds to access the "Servicing Menu".
3. Use the navigation buttons ([^], [v]) to select an item and press [Confirm] to enter.

Servicing Menu Items

Register/Check Indoor Unit (Address Settings)

Obtain Address: Registers indoor units. If not changing the Central control address, set it via a local remote controller beforehand. Follow on-screen prompts to confirm and obtain addresses. This process may take several minutes.

Address Display: Shows registered indoor unit addresses.

Address Auto-setting: Automatically sets Central control addresses from 1 upwards, overwriting existing settings.

To Change the Central control address

Follow the steps to select an indoor unit and assign a new Central control address. This process involves selecting the unit, choosing a new address from a list, confirming, and registering the changes.

Address Display

Displays the registered indoor units and their addresses.

Address Auto-setting

Automatically assigns addresses sequentially. IMPORTANT: This overwrites all current Central control addresses.

Change the Zone to which the Indoor Unit Belongs (Zone Settings)

Select "Zone Settings" from the "Servicing Menu". Choose "Central control Address" to view the address list. Select an address, then select a zone number (1-10) to assign the unit to that zone. Up to 64 units can be set per zone.

To Change the Group Zone of Multiple Indoor Units

Select "Central control Address" in "Zone Settings". Select the first address, then select the last address to group units. Assign a zone number to the selected group.

Set the indoor unit as being out of the scope of management

On the "Zone List" screen, select "Del" for the desired unit and confirm to remove it from zone management. This will reset the controlled/monitored unit count.

Changing the Display Method (Display settings)

Daylight-saving

Enable or disable daylight-saving time display.

Temperature Display Conf.

• Temp. Unit: Select between °C or °F.
• Temp. Increments: Select temperature resolution (1°C or 0.5°C).

Unit Order Settings

Set the display order of indoor units on the "Unit" screen, either by Central control Address or Line Address.

Delete the History and Set the Notice Code (Check/Notice Settings)

Delete check history

Select "Delete check history" and confirm to clear all recorded check history.

Notice Settings

Select "ON/OFF Settings" to choose a notice code to display. Press [Confirm] to select/cancel. "Delete Notice history" clears all recorded notice history.

Changing the External Input Function (External Input Settings)

Select "External Input Settings" to configure functions for DI1, DI2, and DI3. Choose an input terminal, select a function (e.g., Void, OFF, ON, Emergency system, Night Operation, Locking, Thermo OFF, Power peak cut), and assign it to a zone. Specific settings are required for "Locking" and "Power peak cut".

External Input Function Table

This table details the functions, their descriptions, and the corresponding contact outputs (Contact A/B) for various inputs like Void, OFF, ON, Emergency System, Night Operation, Locking, Thermo OFF, and Power Peak Cut.

Switch Operation Mode (CRC Mode Change Conf.)

Select "CRC Mode Change Conf." to switch between "Central Control Mode" (unit acts as a Central Remote Controller) and "Local Control Mode" (unit acts as a remote controller). "Key lock" can restrict local remote controller operation.

Change the Indoor Unit Data (DN setting)

IMPORTANT: This setting is for service personnel only and relates to device control.

Change Communication Configuration (Communication Conf.)

Configure communication settings via SW1, SW2, and SW3. Settings include "Indoor unit address acquisition method" and "Central controller ID setting". Follow on-screen prompts to select switches and change values. NOTE: Do not change settings other than (1) and (2).

(1) Indoor unit address acquisition method setting

Options: 0: Line address mode, 1: Central control address mode.

(2) Central controller ID setting

Details on setting Central controller IDs when combining units or using with different system types (TU2C-LINK compatible, non-TU2C-LINK, or replacing controllers). A table lists specific Central controller IDs and their corresponding SW3 settings. IMPORTANT: Avoid duplicate IDs. If using with non-U series devices, select "Old controller".

Check the Connection Status of the Indoor Units (Communication Check)

Connection Confir. List

Displays the connection status of indoor units, showing Central control addresses and operation status. Unconnected addresses will be blank.

Communication Quality

Shows communication quality metrics such as Line address, number of connected units, usage rate (U%), retransmission rate (R%), collision rate (X%), and communication baud rate (bps).

Register Contact Information when an Error Occurs (Register Contact Info)

Select "Register Contact Info" to input a contact telephone number for error reporting. Use the navigation buttons to enter the number.