Table Of Contents; Safety Precautions; About The Unit; Precautions For Using R410A Refrigerant - Fujitsu asyg18lfca Installation Manual

INSTALLATION MANUAL
PART NO. 9318739084
INDOOR UNIT (Wall Mounted Type)
Contents
1. SAFETY PRECAUTIONS ............................................................................................ 1
2. ABOUT THE UNIT ....................................................................................................... 1
2.1. Precautions for using R410A refrigerant ............................................................ 1
2.2. Special tools for R410A ...................................................................................... 1
2.3. For authorized service personnel only. .............................................................. 2
2.4. Accessories ........................................................................................................ 2
2.5. Optional parts ......................................................................................................... 2
3. GENERAL .................................................................................................................... 2
3.1. Type of copper pipe and insulation material ....................................................... 2
3.2. Additional materials required for installation ...................................................... 2
4. ELECTRICAL REQUIREMENT ................................................................................... 2
5. SELECTING THE MOUNTING POSITION ................................................................. 3
6. INSTALLATION WORK ............................................................................................... 3
6.1. Installation dimensions ....................................................................................... 3
6.2. Indoor unit piping direction ................................................................................. 3
6.3. Cutting the hole in the wall for the connecting piping ......................................... 3
6.4. Installing the wall hook bracket .......................................................................... 3
6.5. Forming the drain hose and pipe ....................................................................... 4
6.6. Flare connection (Pipe connection) .................................................................... 4
7. ELECTRICAL WIRING ................................................................................................ 5
7.1. Wiring system diagram ....................................................................................... 5
7.2. Indoor unit wiring ................................................................................................ 5
7.3. How to connect wiring to the terminals .............................................................. 5
8. FINISHING................................................................................................................... 6
9. FRONT PANEL REMOVAL AND INSTALLATION ...................................................... 6
9.1. Intake grille removal ........................................................................................... 6
9.2. Intake grille installation ....................................................................................... 6
9.3. Front panel removal ........................................................................................... 6
9.4. Front panel installation ....................................................................................... 6
10. TEST RUN ................................................................................................................... 7
11. REMOTE CONTROLLER INSTALLATION .................................................................. 7
11.1. Remote controller holder installation .................................................................. 7
12. OPTIONAL KIT INSTALLATION (OPTION) ................................................................. 7
12.1. Before install optional remote controller ............................................................. 7
12.2. Remote controller cable modifi cation ................................................................. 7
12.3. External input / output Wire modifi cation ............................................................ 7
12.4. Front panel, control box cover and display case removal .................................. 8
12.5. Connecting cable to control board connector ..................................................... 8
12.6. Front panel, control box cover and display case installation .............................. 8
13. FUNCTION SETTING.................................................................................................. 8
14. CUSTOMER GUIDANCE ............................................................................................ 9
15. ERROR CODES ........................................................................................................ 10

1. SAFETY PRECAUTIONS

•
Be sure to read this Manual thoroughly before installation.
•
The warnings and precautions indicated in this Manual contain important informa-
tion 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 repair-
ing 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 indoor unit in accordance
with this Installation Manual. An improperly installed unit can cause serious accidents
such as water leakage, electric shock, or fi re. If the indoor 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
fi re.
If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant
comes in contact with a fl ame, it produces a toxic gas.
Installation work must be performed in accordance with national wiring standards by
authorized personnel only.
En-1
This mark indicates procedures which, if improperly performed,
might possibly result in personal harm to the user, or damage to
CAUTION
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 qualifi ed personnel with a capacity certifi cate for handling
refrigerant fl uids. 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 3mm for this unit.
The unit must be correctly earthed (grounded) and the supply line must be equipped
with a differential 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
personnel to repairs.
When moving, consult authorized service personnel for disconnection and installation of the unit.

2. ABOUT THE UNIT

2.1. Precautions for using R410A refrigerant

The basic installation work procedures are the same as conventional refrigerant (R22)
models.
However, pay careful attention to the following points:
Since the working pressure is 1.6 times higher than that of conventional refrigerant (R22)
models, some of the piping and installation and service tools are special. (See the table
below.)
Especially, when replacing a conventional refrigerant (R22) model with a new refrigerant
R410A model, always replace the conventional piping and fl are nuts with the R410A
piping and fl are nuts.
Models that use refrigerant R410A have a different charging port thread diameter
to prevent erroneous charging with conventional refrigerant (R22) and for safety.
Therefore, check beforehand. [The charging port thread diameter for R410A is 1/2 inch.]
Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant (R22) models. Also, when storing the piping ,securely seal the opening by
pinching, taping, etc.
When charging the refrigerant, take into account the slight change in the composition of
the gas and liquid phases. And always charge from the liquid phase where refrigerant
composition is stable.
1

2.2. Special tools for R410A

Tool name
Pressure is high and cannot be measured with a conventional
(R22) gauge. To prevent erroneous mixing of other refriger-
ants, the diameter of each port has been changed.
Gauge manifold
It is recommended the gauge with seals-0.1 to 5.3 MPa (-1 to
53 bar) for high pressure.
-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.
1
Charge hose
To increase pressure resistance, the hose material and base
size were changed.
A conventional vacuum pump can be used by installing a
Vacuum pump
vacuum pump adapter.
Gas leakage detector
Special gas leakage detector for HFC refrigerant R410A.
Copper pipes
It is necessary to use seamless copper pipes and it is desirable that the amount of re-
sidual oil is less than 40 mg/10 m. Do not use copper pipes having a collapsed, deformed
or discolored portion (especially on the interior surface). Otherwise, the expansion value
or capillary tube may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is neces-
sary to choose adequate materials.
CONNECTION PIPE REQUIREMENT
Do not use the existing (for R22) piping and fl are nuts.
If the existing materials are used, the pressure inside the refrigerant cycle will rise
and cause failure, injury, etc. (Use the special R410A materials.)
When installing and relocating the air conditioner, do not mix gases other
than the specifi ed refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise
to an abnormally high value and cause failure, injury, etc.
Contents of change
WARNING