Toshiba TCB-IFDA1GUL - User Manual

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Summary

PRECAUTIONS FOR SAFETY

Selection of installation location

Guidelines for choosing an appropriate installation site to ensure safety and performance.

Installation

Procedures and considerations for physically installing the unit securely and safely.

Refrigerant piping

Safe and correct methods for installing refrigerant piping, including leak checks.

Electrical wiring

Guidelines for safe and compliant electrical wiring practices for the unit.

Test run

Steps to perform a test run to verify the unit's functionality after installation.

Explanations given to user

Information to be provided to the end-user regarding operation and maintenance.

Relocation

Procedures and safety precautions for relocating the air conditioner unit.

New Refrigerant System Installation

OVERVIEW: DX-INTERFACE RA CONTROL TYPE

System Schematic

A diagram illustrating the connection of the Dx-Interface with other system components.

SYSTEM CONFIGURATION

System design pattern

Table detailing connectivity of 3rd party DX-Coils by capacity and system type.

DX-Coil Type Definitions

Normal Coil Type (Large coil, 28, 32 ton)

Specifications and configuration for normal coil types, including large coil sizes.

Split face; Interlaced

Specifications and configuration for split face and interlaced coil types.

DX-Coil Design Guidelines

AHU;DX-Coil Notes & Features

Key notes and features regarding AHU/DX-Coil selection and performance.

SUPPLIED PARTS

TCB-IFDA1 GUL Contents

List of parts included with the TCB-IFDA1GUL Dx-Controller.

RBM-A0121;A0301;A0601;A0961;A1921 GUL Contents

List of parts included with the various VRF Dx-PMV kits.

INSTALLATION

Dx-Controller (TCB-IFDA1 GUL)

Instructions for mounting the Dx-Controller unit in its designated location.

Refrigerant Piping Design

Allowable length;height difference of refrigerant piping

Limits for refrigerant piping length and height difference for system design.

Refrigerant Piping Selection

Dx-Coil connection pipe

Specifications for selecting and connecting refrigerant pipes for the Dx-Coil.

DX Coil Schematic and coil preparation

Schematic and preparation guidelines for the DX Coil and its piping.

DX-PMV Kit Details

NOTES (Cautions when Brazing Dx-PMV kit)

Important cautions and notes to follow during the brazing process for the Dx-PMV kit.

TA SENSOR

Instructions for securing and installing the TA Sensor correctly.

Electrical Work and Wiring

Power supply wire and communication wires specifications

Specifications for power supply and communication wiring for the system.

Dx-Controller power supply

Details on the power supply requirements and connections for the Dx-Controller.

Control and Communication Wiring

VRF Communication Line (U1;U2)

Specifications for the VRF communication line between units.

VRF Remote controller wiring (A;B)

Wiring specifications for connecting the remote controller.

PMV (Pulse motor wiring (6 wire))

Wiring details for the PMV (Pulse Motor Valve) control signals.

Controller to Outdoor Unit Wiring

VRF Address Set Up

Procedure for setting up VRF addresses for system communication.

Electrical Connections (TCB-IFDA1 GUL)

Diagram showing the electrical connection terminals on the Dx-Controller.

Terminal Connections and Functions

Power and Communication Lines

Description of power supply and communication line terminals and their functions.

Digital Inputs and Outputs

Explanation of digital input and output terminals for system control.

Sensor and PMV Connections

Details on connecting temperature sensors and PMV to the controller.

PMV Wiring Configurations

Wiring for Coil Types

Wiring configurations for PMV based on normal or split/interlaced coil types.

Controls and BMS Integration

Dx-Controller Configuration

Settings and configuration options for the Dx-Controller with external controls.

Changing of settings for applicable controls

Step-by-step guide on how to change settings for applicable controls.

Device and Capacity Code Settings

Summary of Inputs and Outputs (Standard)

A summary table of standard inputs and outputs for the system.

Main Indoor PCB Configuration

Configuration details for the main indoor PCB and its output functions.

Test Run Procedure

Preparation

Essential preparation steps before commencing the test run procedure.

Executing a Test Run

Procedures for executing the test run to confirm system operation and identify issues.

Troubleshooting Common Issues

Using Dx-Controller

Troubleshooting common issues related to the Dx-Controller.

Using a Wired Remote Control

Troubleshooting common issues when using the wired remote control.

Common Check Codes

A list and explanation of common error check codes for the system.

Wiring Diagram Overview

DX-Controller RA Wiring Diagram

A detailed wiring diagram for the Dx-Controller RA control type.

Optional Parts and Accessories

Wired Remote Controller Options

Information about available wired remote controller options.

Central Control and BMS Interface

Details on central control and BMS interface compatibility.

The Toshiba Carrier Dx-Interface: Dx-Controller (RA control type), model TCB-IFDA1GUL, is an installation manual for a device designed to connect a third-party DX-Coil to a Toshiba Carrier VRF system (SMMS-e, SHRM-e). This controller supports DX-Coils up to 16 tons and functions as a VRF indoor unit. It is compatible with HFC R410A refrigerant, a new type adopted to prevent ozone layer destruction. The manual emphasizes that this appliance is for commercial use only and should not be accessible to the general public. Installation and maintenance must be performed by qualified personnel to prevent electric shock, fire, or other hazards.

Function Description:

The Dx-Controller (RA control type) facilitates the integration of third-party DX-Coils with Toshiba Carrier VRF systems. It manages the operation of the DX-Coil, allowing it to function as an indoor unit within the VRF network. The system requires an appropriately sized Dx-PMV kit, which must be brazed to the DX-Coil. The controller also supports larger DX-Coil applications by using two Dx-PMV kits with a single Dx-Controller in one DX-Coil, or interlaced/split-faced DX-Coils with multiple Dx-Controllers and Dx-PMV kits. The main PCB is common for both 0-10V type (TCB-IFDA1GUL) and analogue input type (TCB-IFDD1GUL), with the RA control type being the default configuration for this model.

Important Technical Specifications:

Model Name: TCB-IFDA1GUL
Refrigerant: HFC R410A
Power Supply: 208/230VAC, 60Hz, 1ph
Rating Current: 0.2A
Ambient Operating Temperature Range: 22 to 115°F (for commercial use)
Ambient Operating Humidity Range: 10 to 90% (Non-condensing)
Storage Temperature Range: -4 to 140°F
Dimensions (H x W x D): 16" x 12" x 6.8"
Net Weight: 16.0 lbs
Control Pollution Degree: 1
Dx-Coil Capacity: Up to 16 tons (single Dx-Controller)
PMV Wiring: 6-wire, DC12V; maximum wire length 16ft.
VRF Communication Line (U1/U2): 2-core shield wire, AWG16 (up to 3280'10"/1000m) or AWG14 (up to 6561'8"/2000m).
Remote Control Wiring (A/B): 2-core non-polarity wire, AWG20; total wire length up to 1640'5" (500m).
Power Supply Wiring: Up to 164'1" (50m), MCA: 0.4A, MOCP: 15A.
Diversity (Capacity ratio between indoor and outdoor unit): 60% to 110% when Dx-Coil is connected.
Connectable Capacity: Supports various DX-Coil capacities from 1 ton to 32 tons, with specific configurations for normal, split-face, and interlaced coil types.
Coil Internal Volume: Ranges from 34 to 357 inch³ depending on capacity.
Number of Circuits by U-Pipe Diameter: Varies based on capacity and pipe diameter (5/16", 3/8", 1/2").
Distributor Orifice Size (ID inch): Ranges from 0.10 to 0.32.
Design Evaporating Temperature: 44°F
Suction Superheat: 8°F
Evaporator Air Suction Temp: 80°F (DB) / 67°F (WB)
Design Condensing Temperature: 126°F
Sub Cooling: 12°F
Condenser Air Suction Temp: 70°F (DB)
Cooling "Air ON" Temp: 59°F to 75°F (WB)
Heating "Air ON" Temp: 59°F to 83°F (DB)

Usage Features:

Installation Location: Must be installed in a vertical orientation (door front side) with a mounting surface temperature limit of 140°F. Avoid direct sunlight and rain.
Refrigerant Piping: Requires new and clean piping designed for R410A. Existing piping should not be used due to pressure resistance and impurity concerns. Nitrogen gas must be used for airtight tests.
Electrical Wiring: All electrical work must comply with local regulations and the installation manual. Earth wire connection is mandatory. Power supply, earth leakage breaker, and main switch for the Dx-Controller should be connected to the same outdoor unit.
Sensor Installation: Refrigerant temperature sensors (TC1, TC2, TCJ) are inserted into brazed sensor holders and secured with supplied fix plates. The TA sensor (resin) must be located before the DX-Coil after pre-conditioning and secured with a plastic clamp.
Remote Control: A wired remote control is necessary for installation and maintenance, including changing settings and performing test runs. Wireless remote controls, sub-remote controls, or central remote control systems cannot be used for these specific settings.
System Configuration: Supports various DX-Coil configurations, including normal, split-face, and interlaced types, with specific wiring diagrams for each. For large coils (28, 32 tons), two Dx-PMV kits are connected in parallel and controlled by the PMV1 and PMV2 ports of the Dx-Controller in synchronization.
DN Code Setting: Device Type DN Code 10_55 is factory set. The installer must set the Capacity Code (DN Code 11) using the wired remote control.
Digital Inputs/Outputs: Provides various digital inputs (ON/OFF, safety contact, fan error, remote control disabling, demand input) and outputs (fan operation, alarm, thermo-ON, secondary heating/cooling). These are connected via relays (KP2, KP3, KP8, KP9) on the main indoor PCB.
Test Run: A forced test run can be executed via the wired remote control. This mode automatically releases after 60 minutes to prevent excessive load on devices.

Maintenance Features:

Troubleshooting: The Dx-Controller provides check codes (e.g., E01, E09, F01, F02, F03, F10, L09, L30, P10) that appear on the wired remote control display in case of a malfunction. These codes help identify issues such as incorrect remote control address settings, sensor errors (TCJ, TC2, TC1, TA), DX controller capacity code incorrectness, external interlock, or safety contact errors.
Error Display: The unit number of the malfunctioning indoor unit is displayed along with the check code.
Diagnostic Access: The MONITOR or CANCEL buttons on the remote control can be used to display check information.
Safety Checks: Before power-on, an insulation test (500V-Megger) must be performed to ensure resistance of 1MΩ or more between the terminal block of the power supply and earth. The outdoor unit valve must be fully open.
Compressor Protection: After activation, the unit should be left powered ON for 12 hours or more before operation to protect the compressor.
Qualified Service: Any repair or relocation work must be carried out by a qualified installer or service person. Do not attempt to fix the controller if there is a malfunction.