Carrier 8FJEE Interface Air conditioner Instruction Manual
- May 15, 2024
- Carrier
Table of Contents
Carrier 8FJEE Interface Air conditioner Instruction Manual
Notice : Carrier is committed to continuously improving its products to ensure the highest quality and reliability standards, and to meet local regulations and market requirements. All features and specifications are subject to change without prior notice.
Precautions for safety
The following instructions must be observed
- Carefully read these “Precautions for Safety” before installation, and perform installation work safely.
- These precautions contain important information regarding safety.
- After installation work, carry out an operation trial to confirm that there are no problems, and explain to the customer how to operate and maintain the system. Ask the customer to keep this Installation Manual.
Expressions
1: Serious bodily harm indicates loss of eyesight, injury, burns, electric shock, bone fracture, poisoning, and other injuries which leave aftereffect and require hospitalization or long-term treatment as an outpatient.
2: Bodily injury indicates injury, burns, electric shock, and other injuries which do not require hospitalization or long-term treatment as an outpatient.
*3: Damage to property indicates damage extending to buildings, household effects, domestic livestock, and pets.
Graphic symbols
Warning
Warning
This is a class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate
measures.
Introduction
Overview
The BN interface refers to equipment used for controlling Building Management Systems (Procured locally) and air conditioners “TU2C-LINK Uh Line (hereinafter, referred to as Uh Line) compatible models” through communications via a network to enable central control.
Included Items
Specifications
External View (BN interface equipment)
REQUIREMENT
Power cable is not supplied for the BN Interface. Insert a two core power cord applicable to the standard of the country you use.
Component Names
Installation
REQUIREMENT
Do not install the unit in any of the following places.
- Humid or wet place
- Dusty place
- Place exposed to direct sunlight
- Place where there is a TV set or radio within one meter
- Place exposed to rain (outdoors, under eaves, etc.)
BN Interface Installation and Orientation
Install and orient the interface using the DIN rail to mount the unit or wall
mount or surface mount it as shown below.
Use the supplied mounting bracket to wall mount or surface mount the
interface.
(1) DIN rail mount
Install the interface on DIN rails mounted on a switchboard or elsewhere.
(2) Wall mount
Use screws to attach the supplied DIN rails to a wall and install the
interface on the DIN rail.
Installation Space and Maintenance Space
A side space for connecting through cable inlets and an upper space for
maintenance must be reserved before installation.
The other sides can be adjacent to surrounding objects.
Power and signal line connections
Cables
Use the following cable for signal line connections. (Procured locally)
Ethernet® is a registered trademark of Xerox Co., Ltd.
Cable Connections
Connect the cables to the specified connectors.
Length of stripped Uh Line communication cable
CAUTION
The Uh Line communication cable have no polarity.
- Secure the Uh Line communication cable and power cable to the switchboard etc. using the supplied cable tie to ensure that no excess load is placed on the power cable connection and Uh Line communication cable connection.
Example of System Wiring Connections
Termination resistance setting
• TU2C-LINK / TCC-LINK termination resistance setting …………
Refer to the manual of each model for the termination resistance setting method.
Shield grounding process
• Central control wiring shielded wire …………………………………….When using the
central remote controller with one unit, open the shielded wire of the central
control wiring and perform insulation processing.
When using the central remote controller with multiple units, connect the
shield of the central control wiring to the closed end and open the shield at
the final end of the central remote controller to perform insulation
processing.
Perform the central control wiring shield grounding on the air conditioner
side.
REQUIREMENT
- Be sure to install a circuit breaker or all-pole isolating switch (with a contact breaking distance of at least 3 mm) on the primary side of the power supply.
- Fasten the screws to the terminal block with torque of 0.5 N•m.
Design of Control Wiring
For the communication type, consult the local dealer.
NOTE
The equipment that can be displayed may vary depending on the country or
region.
For details contact our sales personnel.
When the connected outdoor unit is TU2C-LINK protocol
Follow the wiring specifications in the table below even when there is a mix
of TU2C-LINK protocol and TCC LINK protocol in the connected indoor units or
remote controllers.
Wiring specifications
REQUIREMENT
hen wiring the control wiring between indoor and outdoor units (Uv
line)/control wiring between outdoor units (Uc line) and the central control
wiring (Uh line), use the same wire type and diameter for each line.
Using a mixture of different wire types and diameters may cause a
communication error.
System diagram
- The wiring specifications in the system diagram above are the same even when the indoor unit or remote controller are TCC-LINK protocol.
When the connected outdoor units are TCC-LINK protocol
Wiring specifications
REQUIREMENT
When wiring the control wiring between indoor and outdoor units/central
control wiring and the control wiring between outdoor units, use the same wire
type and diameter for each line.
Using a mixture of different wire types and diameters may cause a
communication error.
System diagram
When connecting to a previous model light commercial, air to air heat exchanger, air to water heat pump, or general purpose equipment control interface
Follow the wiring specifications in the table below even when there is a mix of TU2C-LINK protocol and TCC LINK protocol in the connected indoor units or remote controllers.
Wiring specifications
REQUIREMENT
When wiring the control wiring between indoor and outdoor units (Uv line)/control wiring between outdoor units (Uc line) and the central control wiring (Uh line), use the same wire type and diameter for each line. Using a mixture of different wire types and diameters may cause a communication error.
System diagram
Settings
3-1. Switch setting
SW100
Uh Line termination resistance setting switch bit1:use, bit2:not use Refer to
“Termination resistance setting” (P.9)
Shutdown button
Shutdown function / air conditioner search mode function button
Use this button to stop BACnet process and network process of the BN interface
or to start up in the air conditioner search mode. Note that button operation
changes depending on how long it is depressed.
3-2. LED
Factory default settings
Test run
To perform test run of the BN interface, BACnet communication settings and the equipment data of the connected indoor units are required.
5-1. BACnet communication settings
Set the IP address of the BN interface and the device object instance number
of the BACnet communications. These setting can set from Setting File Creation
Software 2. For details, contact your dealer.
5-2. Setting up equipment data in the indoor unit
Obtain the equipment data of the indoor unit that is controlled by the BN
interface from the indoor unit via the Uh Line communication cable.
Preparing to set up equipment data in the indoor unit
-
Central Control address must be set in the indoor unit you want to control.
For information on how to set the address, refer to the installation manual of each indoor unit. -
Turn on all indoor and outdoor units. Set up as follows, waiting 10 minutes after turning on all the units.
Setup work
Step 1. Start the BN interface.
- Turn on the BN interface.
- The status of the LED L1 changes to LEDstatus-1, LEDstatus-2, and then to LEDstatus-4. It takes about 10 minutes for the LED L1 status to change to LEDstatus-4.
Step 2. Start up in the air conditioner search mode.
- Hold down the Shutdown button for 4 seconds or more.
- The status of the LED L1 changes to LEDstatus-7 and then to LEDstatus-8.
- When reading equipment information from the indoor units is successfully completed, the BN interface automatically prepares for BACnet communication.
- The status of the LED L1 changes to LEDstatus-1, LEDstatus-2, and then to LEDstatus-4. It takes about 10 minutes for the LED L1 status to change to LEDstatus-4.
- If an error occurs, then the status of the LED L1 will be LEDstatus-3.
Refer to Section 5-3 to check for the cause of error generation.
When the BN interface is operating normally
- he status of the LED L1 is LEDstatus-4.
LED L1 blinking
5-3. Cause of problem occurring during setup
Turning off the BN interface
Press the shutdown button, then wait 5 minutes before turning it off.
When turning off the BN interface
- Press the Shutdown button 2 times.
- The status of the LED L1 changes to LEDstatus-5 and then to LEDstatus-6.
- Disconnect the power adapter from the BN interface.
CAUTION
As the air conditioner search mode will be engaged if the shutdown button is pressed for 4 seconds or longer, do not hold down the button.
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