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INSTALLATION MANUAL
PART NO. 9378945142
VRF system outdoor unit
CONTENTS
1.
SAFETY PRECAUTIONS ........................................................................................ 1
2.
ABOUT THE UNIT ................................................................................................... 2
2. 1.
Precautions for using the R410A refrigerant ................................................. 2
2. 2.
Special tools for R410A ................................................................................. 2
2. 3.
Accessories .................................................................................................. 2
2. 4.
Combinations ................................................................................................ 2
2. 5.
Optional parts................................................................................................ 3
3.
INSTALLATION WORK ............................................................................................ 3
3. 1.
Selecting an installation location ................................................................... 3
3. 2.
Drain processing ........................................................................................... 3
3. 3.
Installation dimensions .................................................................................. 3
3. 4.
Transportation the outdoor unit ..................................................................... 5
3. 5.
Installation the unit ........................................................................................ 6
4.
SYSTEM CONFIGURATION ................................................................................... 6
4. 1.
System configuration .................................................................................... 6
4. 2.
Pipe selection................................................................................................ 7
4. 3.
Protection of pipes ........................................................................................ 8
5.
PIPE INSTALLATION ............................................................................................... 8
5. 1.
Brazing .......................................................................................................... 8
5. 2.
Indoor unit pipe connections ......................................................................... 8
5. 3.
Piping method ............................................................................................... 8
5. 4.
Multiple connections ..................................................................................... 9
6.
ELECTRICAL WIRING ........................................................................................... 11
6. 1.
The precautions of electrical wiring ............................................................. 11
6. 2.
Wiring method ............................................................................................. 11
6. 3.
Knockout hole ............................................................................................. 11
6. 4.
Selecting power supply cable and breaker ................................................. 12
6. 5.
Transmission line ........................................................................................ 12
6. 6.
Wiring procedure......................................................................................... 13
6. 7.
External input and external output .............................................................. 14
7.
FIELD SETTING .................................................................................................... 15
7. 1.
Field setting switches .................................................................................. 15
7. 2.
DIP switch setting ....................................................................................... 15
7. 3.
Rotary switch setting ................................................................................... 16
7. 4.
Push button setting ..................................................................................... 17
7. 5.
Signal amplifier address setting .................................................................. 19
7. 6.
Indoor unit address setting .......................................................................... 19
7. 7.
(Measure with breaker OFF) ....................................................................... 20
8.
PIPE INSTALLATION II .......................................................................................... 20
8. 1.
Sealing test ................................................................................................. 20
8. 2.
Vacuum process ......................................................................................... 20
8. 3.
Additional charging ..................................................................................... 21
8. 4.
Installing insulation ...................................................................................... 22
9.
TEST RUN ............................................................................................................. 22
9. 1.
Pre-test run check items ............................................................................. 22
9. 2.
Test operation method ................................................................................ 22
9. 3.
Checklist ..................................................................................................... 23
10. LED Status ............................................................................................................. 23
10. 1. Normal operation mode .............................................................................. 23
10. 2. Error codes ................................................................................................. 23
11. INFORMATION ...................................................................................................... 24
1. SAFETY PRECAUTIONS
• Be sure to read this Installation manual thoroughly before installation.
• The warnings and precautions indicated in this Installation manual contain impor-
tant information pertaining to your safety. Be sure to observe them.
• After installing the unit, perform a test run to make sure the unit operates normally.
Then, explain to the customer how to operate and maintain the unit.
• Please pass this Installation manual together with the Operating manual to the cus-
tomer.
Please ask the customer to keep the Operating manual and Installation manual at
hand for future reference during the moving or repair of the main unit.
This mark indicates procedures which, if improperly
WARNING
performed, might lead to the death or serious injury of the
user.
For installation purposes, be sure to use the parts supplied by the manufacturer or
other prescribed parts.
Using non-specified parts will cause serious accidents such as falling unit, refriger-
ant leakage, water leakage, electric shock, and fire.
En-1
To install a unit that uses the R410A refrigerant, use dedicated tools and piping
materials 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.
It will also cause serious accidents such as refrigerant leakage, water leakage,
electric shock, and fire.
Do not use this equipment with air or any other unspecified refrigerant in the refrig-
erant lines.
Excess pressure can cause a rupture.
Be sure to install the unit as prescribed, so that it can withstand earthquakes and
typhoons or other strong winds.
Improper installation can cause the unit to topple or fall, or other accidents.
Ensure that the outdoor unit is securely installed at a place that can withstand the
weight of the unit.
Improper installation will cause injuries caused by falling unit.
If there is a refrigerant leakage, make sure that it does not exceed the concentra-
tion limit.
If a refrigerant leakage exceeds the concentration limit, it can lead to accidents
such as oxygen starvation.
If a refrigerant leakage occurs during operation, immediately vacate the premises
and thoroughly ventilate the area.
If the refrigerant is exposed to fire, it will create a hazardous gas.
Electrical work must be performed in accordance with this Installation manual by a
person certified under the national or regional regulations. Be sure to use a dedi-
cated circuit for the unit.
An insufficient power supply circuit or improperly performed electrical work can
cause serious accidents such as electric shock or fire.
For wiring, use the prescribed type of cables, connect them securely, making sure
that there are no external forces of the cables applied to the terminal connections.
Improperly connected or secured cables can cause serious accidents such as
overheating the terminals, electric shock, or fire.
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.
After the installation, make sure there is no refrigerant leakage.
If the refrigerant leaks into the room and becomes exposed to a source of fire such
as a fan heater, stove, or burner, it will create a hazardous gas.
Use a wall hole pipe. Otherwise, it may cause a short circuit.
Do not place the outdoor unit near the handrail of the balcony.
Children may climb onto the outdoor unit, lean over the handrail and fall over.
Use only a specified power cable. Poor connection, poor insulation, and exceeding the
allowable current will lead to electric shock and fire.
Attach the connecting cables securely to the terminal. Or secure it firmly with a "wir-
ing suppressor".
Loose connection will lead to malfunction, electric shock, and fire.
Install a breaker to cut off all AC main current at the same time.
If you do not install a breaker, it may cause electric shock and fire.
During installation, make sure that the refrigerant pipe is attached firmly before you
run the compressor.
Do not operate the compressor under the condition of refrigerant piping not
attached properly with 2-way or 3-way valve open. This may cause abnormal pres-
sure in the refrigeration cycle that leads to rupture and even injury.
During the pump-down operation, make sure that the compressor is turned off
before you remove the refrigerant piping. Do not remove the connection pipe while
the compressor is in operation with 2-way or 3-way valve open. This may cause
abnormal pressure in the refrigeration cycle that leads to breakage and even injury.
If there is a possibility of touching the fan during maintenance, make sure to turn
OFF the power before implementing the maintenance. Even if operations are
suspended, the fan of outdoor unit sometimes rotates, so if the fan rotates suddenly
while in contact with you may cause serious injury.
This mark indicates procedures which, if improperly
CAUTION
performed, might possibly result in personal harm to the
user, or damage to property.
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.
This unit contains no user-serviceable parts. Always consult authorized service
personnel to repairs.
When moving, consult authorized service personnel for disconnection and installa-
tion of the unit.
• Obtain the distribution network operator's agreement about the power capacity
of the power supply system, specification of the cable and the harmonic current,
and etc. when you connect the outdoor unit with the power supply.
• This unit must be connected to a power supply with impedance of 0.33 ohm and
below. If the power supply does not satisfy this requirement, please consult the
power supplier.
• This product is intended for professional use.
Be sure to use a dedicated power circuit.
Never use a power supply shared by another appliance.
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