Table Of Contents; Safety Precautions; About This Product; Precautions For Using The R410A Refrigerant - Fujitsu AIRSTAGE ARXK007GLFH Installation Manual

INSTALLATION MANUAL
PART No. 9381858132
VRF system indoor unit (Duct type)
Contents
1. SAFETY PRECAUTIONS ............................................................................................. 1
2. ABOUT THIS PRODUCT.............................................................................................. 1
2.1. Precautions for using the R410A refrigerant ...................................................... 1
2.2. Special tool for R410A ....................................................................................... 1
2.3. Accessories ....................................................................................................... 2
2.4. Optional parts .................................................................................................... 2
3. INSTALLATION WORK ................................................................................................ 2
3.1. Selecting an installation location ....................................................................... 2
3.2. Installation dimensions ...................................................................................... 3
3.3. Installing the unit ................................................................................................ 3
4. PIPE INSTALLATION ................................................................................................... 5
4.1. Selecting the pipe material ................................................................................ 5
4.2. Pipe requirement ............................................................................................... 5
4.3. Flare connection (pipe connection) ................................................................... 5
4.4. Installing heat insulation .................................................................................... 6
5. INSTALLING DRAIN PIPES ......................................................................................... 6
5.1. ARXK***GLGH model ........................................................................................ 6
5.2. ARXK***GLFH model ........................................................................................ 7
5.3. Install the drain pipe .......................................................................................... 7
6. ELECTRICAL WIRING ................................................................................................. 8
6.1. Electrical requirement ........................................................................................ 8
6.2. Wiring method ................................................................................................... 9
6.3. Unit wiring .......................................................................................................... 9
6.4. Connection of wiring .......................................................................................... 9
6.5. Optional parts wiring ........................................................................................ 10
6.6. External input and external output (optional parts) .......................................... 11
6.7. Remote sensor (optional parts) ....................................................................... 12
6.8. IR receiver unit (optional parts) ....................................................................... 12
6.9. Auto louver grille (optional parts) ..................................................................... 12
7. FIELD SETTING ......................................................................................................... 12
7.1. Setting the address .......................................................................................... 12
7.2. Custom code setting ........................................................................................ 13
7.3. Static pressure mode ....................................................................................... 13
7.4. Switching of airfl ow direction louver function ................................................... 13
7.5. Switching of drainage function ......................................................................... 13
7.6. Function setting ............................................................................................... 13
8. TEST RUN .................................................................................................................. 14
8.1. Test run using the outdoor unit (PCB).............................................................. 14
8.2. Test run using the remote controller ................................................................ 14
9. CHECK LIST .............................................................................................................. 14
10. ERROR CODES ....................................................................................................... 14

1. SAFETY PRECAUTIONS

• Be sure to read this manual thoroughly before installation.
• The warnings and precautions indicated in this manual contain important information
pertaining to your safety. Be sure to observe them.
• Hand this manual, together with the operating manual to the customer.
Request the customer to keep them on hand for future use, such as for relocating or
repairing the unit.
This mark indicates procedures which, if improperly performed,
WARNING
might lead to the death or serious injury of the user.
Request your dealer or a professional installer to install the unit in accordance with this
manual. An improperly installed unit can cause serious accidents such as water leak-
age, electric shock, or fire. If the unit is installed in disregard of the instructions in the
installation manual, it will void the manufacturer's warranty.
Do not turn ON the power until all work has been completed.
Turning ON the power before the work is completed can cause serious accidents such
as electric shock or fire.
If refrigerant leaks while work is being carried out, ventilate the area.
If the refrigerant comes in contact with a flame, it produces a toxic gas.
Installation work must be performed in accordance with national wiring standards by
authorized personnel only.
Except for EMERGENCY, never turn off main as well as sub breaker of the indoor units
during operation. It will cause compressor failure as well as water leakage.
First, stop the indoor unit by operating the control unit, converter or external input device
and then cut the breaker.
Make sure to operate through the control unit, converter or external input device.
When the breaker is designed, locate it at a place where the users cannot start and stop
in the daily work.
En-1
This mark indicates procedures which, if improperly performed,
CAUTION might possibly result in personal harm to the user, or damage to
property.
Read carefully all security information before use or install the air conditioner.
Do not attempt to install the air conditioner or a part of the air conditioner by yourself.
This unit must be installed by qualified personnel with a capacity certificate for handling
refrigerant fluids. Refer to regulation and laws in use on installation place.
The installation must be carried out in compliance with regulations in force in the place of
installation and the installation instructions of the manufacturer.
This unit is part of a set constituting an air conditioner. It must not be installed alone or
with non-authorized by the manufacturer.
Always use a separate power supply line protected by a circuit breaker operating on all
wires with a distance between contact of 3 mm for this unit.
The unit must be correctly grounded and the supply line must be equipped with a dif-
ferential breaker in order to protect the persons.
The units are not explosion proof and therefore should not be installed in explosive
atmosphere.
Never touch electrical components immediately after the power supply has been turned
off. Electric shock may occur. After turning off the power, always wait 5 minutes before
touching electrical components.
This unit contains no user-serviceable parts. Always consult authorized service person-
nel to repairs.
When moving, consult authorized service personnel for disconnection and installation of
the unit.

2. ABOUT THIS PRODUCT

2.1. Precautions for using the R410A refrigerant

Do not introduce any substance other than the prescribed refrigerant into the refrigera-
tion cycle.
If air enters the refrigeration cycle, the pressure in the refrigeration cycle will become
abnormally high and cause the piping to rupture.
If there is a refrigerant leakage, make sure that it does not exceed the concentration
limit.
If a refrigerant leakage exceeds the concentration limit, it can lead to accidents such as
oxygen starvation.
Do not touch refrigerant that has leaked from the refrigerant pipe connections or other
area. Touching the refrigerant directly can cause frostbite.
If a refrigerant leakage occurs during operation, immediately vacate the premises and
thoroughly ventilate the area.
If the refrigerant comes in contact with a flame, it produces a toxic gas.

2.2. Special tool for R410A

To install a unit that uses the R410A refrigerant, use dedicated tools and piping materi-
als that have been manufactured specifically for R410A use.
Because the pressure of the R410A refrigerant is approximately 1.6 times higher than
the R22, failure to use dedicated piping material or improper installation can cause
rupture or injury.
Furthermore, it can cause serious accidents such as water leakage, electric shock, or
fire.
Tool name
Pressure is huge and cannot be measured with a conven-
tional gauge. To prevent erroneous mixing of other refriger-
ants, the diameter of each port has been changed.
Gauge manifold
It is recommended to use a gauge manifold with a high
pressure display range -0.1 to 5.3 MPa and a low pressure
display range -0.1 to 3.8 MPa.
To increase pressure resistance, the hose material and base
Charging hose
size were changed.
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
• A conventional vacuum pump can be used by installing a
Vacuum pump vacuum pump adapter.
• Be sure that the pump oil does not back flow into the
system. Use one capable for vacuum suction of -100.7kPa
(5 Ton, -755mmHg).
Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.
WARNING
WARNING
Contents of change for R22 tool