Table of Contents
Advertisement
INSTALLATION MANUAL
PART NO. 9366247067-02
VRF system RB unit
Contents
1. SAFETY PRECAUTIONS..........................................................................................1
2. ABOUT THIS PRODUCT .........................................................................................1
2.1. Precautions for using R410A refrigerant .........................................................1
2.2. Special tools for R410A...................................................................................1
2.3. Accessories.....................................................................................................2
2.4. Optional parts..................................................................................................2
3. CONNECTION SPECIFICATIONS............................................................................2
4. PIPING SPECIFICATIONS........................................................................................2
5. INSTALLATION WORK .............................................................................................2
5.1. Selecting an installation location .....................................................................2
5.2. Installation dimensions....................................................................................3
5.3. Hanger bolt installation ...................................................................................4
5.4. Hanging metal fi xtures ....................................................................................4
5.5. Installation of the unit ......................................................................................4
6. PIPE INSTALLATION ................................................................................................5
6.1. Pipe selection..................................................................................................5
6.2. Selecting the pipe material..............................................................................6
6.3. Pipe connection ..............................................................................................6
6.4. Installing heat insulation..................................................................................6
7. ELECTRICAL WIRING ..............................................................................................7
7.1. Safety precautions for electrical wiring ...........................................................7
7.2. Electrical requirement .....................................................................................7
7.3. Wiring ..............................................................................................................7
8. FIELD SETTING ......................................................................................................10
8.1. PC board layout ............................................................................................10
8.2. Address setting .............................................................................................11
8.3. Function setting.............................................................................................11
9. EXTERNAL INPUT ..................................................................................................11
9.1. Input select....................................................................................................11
9.2. Cooling/heating priority function....................................................................12
10. MERGING 2 OR 4 BRANCHES ..............................................................................12
10.1. Connection specifi cations .............................................................................12
10.2. Pipe installation (pipe selection) ...................................................................12
10.3. Electrical wiring .............................................................................................13
10.4. Field setting ..................................................................................................14
11. TEST RUN ...............................................................................................................14
11.1. Test run using Outdoor unit (PC board) ........................................................14
11.2. Test run using Remote Controller .................................................................14
12. CHECK LIST ...........................................................................................................14
13. INDICATOR LAMP STATUS ....................................................................................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 per-
WARNING
formed, might lead to the death or serious injury of the user.
Never touch electrical components immediately after the power supply has been
turned off. Electrical shock may occur. After turning off the power, always wait 10
minutes or more before touching electrical components.
Request your dealer or a professional installer to install this 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 this 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.
During installation, make sure that the refrigerant pipe is attached fi rmly 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 pressure in the
refrigeration cycle that leads to breakage and even injury.
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 breakage, injury, etc.
Be sure to always use the parts accessories or the specifi ed parts for installation.
Failure to use the specifi ed parts may cause the equipment to fail, water leakage,
electric shock or fi re.
Install the equipment in a location that is out of reach of children.
Be sure to check that there are no refrigerant leaks after installation is completed.
If there is refrigerant gas leak indoors and comes into contact with an open fl ame
from such sources as a fan heater, bunsen burner, or stove, it can generate toxic
fumes.
Do not turn OFF the breaker (or the disconnect switch) connected to the RB unit dur-
ing operations except in an emergency. Doing so may cause a compressor malfunc-
tion. When turning OFF the RB unit power, fi rst stop refrigerant system operations,
and then turn OFF the breaker (or disconnect switch) connected to the RB unit.
En-1
This product is not intended to be used by people (including children) with physical,
sensory or mental disability, or persons lacking experience or knowledge unless they
have been given by the through a person responsible for their safety, supervision or
instruction concerning the use of the device.
This mark indicates procedures which, if improperly per-
CAUTION
formed, 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 qualifi ed personnel with a capacity certifi cate for han-
dling 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 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.
Do not turn on the power until all installation work is complete.
This unit contains no user-serviceable parts. Always consult authorized service per-
sonnel to repairs.
When moving, consult authorized service personnel for disconnection and installation
of the unit.
Children should be monitored to ensure they do not play with the device.
It is not necessary to provide drainage for this unit.
This equipment is for indoor use only.
2. ABOUT THIS PRODUCT
2.1. Precautions for using R410A refrigerant
Do not introduce any substance other than the prescribed refrigerant into the
refrigeration 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 fl ame, it produces a toxic gas.
2.2. Special tools for R410A
To install a unit that uses the R410A refrigerant, use dedicated tools and piping
materials that have been manufactured specifi cally 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 fi re.
Tool name
Pressure is huge and cannot be measured with a conventional
(R22) gauge. To prevent erroneous mixing of other refrigerants,
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 (R22) vacuum pump can be used by installing a
vacuum pump adapter. Be sure that the pump oil does not back
Vacuum pump
flow into the system. Use one capable for vacuum suction of
-100.7 kPa (5 Torr, -755 mmHg).
Gas leakage
Special gas leakage detector for HFC refrigerant R410A.
detector
WARNING
WARNING
Contents of change
Advertisement
Table of Contents
