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INSTALLATION MANUAL
PART NO. 9374707140-03
MODBUS CONVERTOR for Indoor unit
Contents
1. SAFETY PRECAUTIONS .........................................................................1
2. MAIN UNIT AND ACCESSORIES ............................................................1
3. ELECTRICAL REQUIREMENT ................................................................1
4. MODBUS COMMUNICATION SPECIFICATIONS ...................................2
5. SELECTING AN INSTALLATION LOCATION ..........................................2
5.1. Dimensions ......................................................................................2
6. WIRING .....................................................................................................2
6.1. Wiring method ..................................................................................3
6.2. Unit wiring ........................................................................................3
7. INSTALLING THE MODBUS CONVERTOR ............................................3
7.1. Connecting the transmission cables ................................................4
8. CIRCUIT BOARD SETTING .....................................................................4
9. TURNING ON THE POWER ....................................................................7
10. LED DISPLAY ...........................................................................................7
10.1. Normal code .....................................................................................7
10.2. Error code ........................................................................................7
1. SAFETY PRECAUTIONS
• The "SAFETY PRECAUTIONS" indicated in this manual contain impor-
tant information pertaining to your safety. Be sure to observe them.
• Request the user to keep this manual on hand for future use, such as for
relocating or repairing the unit.
This mark indicates procedures which, if improp-
WARNING
erly performed, might lead to the death or serious
injury of the user.
Perform electrical work by an authorized service personnel in accor-
dance with this manual and the electrical wiring regulations or imple-
mentation regulations of the country. Also do not install this unit by
yourself. Improper electric work will cause electric shock or a fi re.
Perform installation work in accordance with this manual. Request an
authorized service personnel to perform installation work. Do not install
this unit by yourself. Improper installation will cause injury, electric
shock, fi re, etc.
In the event of a malfunction (burning smell, etc.), immediately stop
operation, turn off the electrical breaker, and consult authorized service
personnel.
Use a power source exclusively for this unit. Never share the power
source with other electrical equipment. Doing so will cause fi re and
electric shock.
Do not install the unit in the following areas:
• Do not install the unit near a source of heat, steam, or fl ammable gas.
• Area fi lled with mineral oil or containing a large amount of splashed oil
or steam, such as a kitchen. It will deteriorate plastic parts, causing the
parts to fail or the unit to leak water.
• Area that generates substances that adversely affect the equipment,
such as sulfuric gas, chlorine gas, acid, or alkali. It will cause the cop-
per pipes and brazed joints to corrode, which can cause refrigerant
leakage.
• Area containing equipment that generates electromagnetic interfer-
ence. It will cause the control system to malfunction, preventing the
unit from operating normally.
• Area that can cause combustible gas to leak, contains suspended
carbon fi bers or fl ammable dust, or volatile infl ammables such as paint
thinner or gasoline. If gas leaks and settles around the unit, it can
cause a fi re.
• Do not use the unit for special purposes, such as storing food, raising
animals, growing plants, or preserving precision devices or art objects.
It can degrade the quality of the preserved or stored objects.
• Install the unit in a well-ventilated place avoiding rains and direct sun-
light.
Do not operate this unit when your hands are wet. Touching the unit with
wet hands will cause an electric shock.
If children may approach the unit, take preventive measures so that they
cannot reach the unit.
En-1
This mark indicates procedures which, if improp-
CAUTION
erly performed, might possibly result in personal
harm to the user or damage to property.
Pay abundant care when transporting this unit because it is a precision
device. Improper transportation will cause trouble.
Do not touch the switches with sharp objects. Doing so will cause injury,
trouble, or electric shock.
Do not expose this unit directly to water. Doing so will cause trouble,
electric shock, or heating.
Do not set vessels containing a liquid on this unit. Doing so will cause
heating, fi re, or electric shock.
Dispose of the packing materials safely. Tear and dispose of the plastic
packing bags so that children cannot play with them. There is the danger
of suffocation if children play with the original plastic bags.
Do not insert articles into the slit parts of this unit. Doing so will cause
trouble, heating, or electric shock.
2. MAIN UNIT AND ACCESSORIES
Important: Download the interface specifi cations from the website before
starting installation work.
http://www.fujitsu-general.com/global/support/
The following installation parts are supplied. Use them as required.
Name and Shape
MODBUS convertor
Installation manual
Cable tie
Screw (M4 x 16 mm)
Connector cable
MODBUS connector
3. ELECTRICAL REQUIREMENT
Use
Size
Maximum 1.25 mm
(16AWG) AWG16-26
MODBUS
cable
0.128 mm
Minimum
(26AWG)
MODBUS
is registered trademark of Schneider Electric SA.
* : Use shielded cable in accordance with local rules for MODBUS cable.
Q'ty
Application
Main unit
1
This manual
1
For mounting the
transmission cable.
4
For mounting the MODBUS
Convertor.
3
For connecting to indoor unit
(1.5m)
1
For connecting the cable and
attaching the board connec-
1
tor.
Wire type
Remarks
2
3Wire+
Sheathed PVC
2
cable
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