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1. SAFETY PRECAUTIONS
This installation manual describes how to install the outdoor unit only. To install the indoor
unit, refer to the installation manual included with the indoor unit.
IMPORTANT!
Please Read Before Starting
This air conditioning system meets strict safety and operating standards.
As the installer or service person, it is an important part of your job to install or service the
system so it operates safely and efficiently.
For safe installation and trouble-free operation, you must:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electrical codes.
• Pay close attention to all warning, and caution notices given in this manual.
WARNING:
This symbol refers to a hazard or unsafe practice which can result in
severe personal injury or death.
CAUTION:
This symbol refers to a hazard or unsafe practice which can result in
personal injury and the potential for product or property damage.
• Hazard alerting symbols
Electrical
Safety / alert
If Necessary, Get Help
These instructions are all you need for most installation sites and maintenance conditions.
If you require help for a special problem, contact our sales/service outlet or your certified
dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation or maintenance
service, including failure to follow the instructions in this document.
SPECIAL PRECAUTIONS
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY
A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS
SYSTEM.
• Do not supply power to the unit until all wiring and tubing are completed or reconnected
and checked.
• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring
diagram and these instructions when wiring. Improper connections and inadequate
grounding can cause accidental injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and
a possible fire hazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get a partner to
help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin
aluminum fins on the air conditioner can cut your fingers.
When Installing...
...In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary
to construct a strong wood or metal frame to provide added support.
...In a Room
Properly insulate any tubing run inside a room to prevent “sweating” that can cause
dripping and water damage to walls and floors.
...In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the
outdoor unit. This prevents water damage and abnormal vibration.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air
baffle.
...In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised support that is higher than drifting snow. Provide snow
vents.
When Connecting Refrigerant Tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigeration compressor oil (or equivalent) used for the outdoor unit to the matching
surfaces of the flare and union tubes before connecting them, then tighten the nut with a
torque wrench for a leak-free connection.
• Check carefully for leaks before starting the test run.
NOTE:
Depending on the system type, liquid and gas lines may be either narrow or wide.
Therefore, to avoid confusion the refrigerant tubing for your particular model is specified
as either “small” or “large” rather than as “liquid” or “gas”.
When Servicing
•Turn the power OFF at the main circuit breaker panel before opening the unit to check or
repair electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal scraps or bits of
wiring have been left inside the unit being serviced.
• After installation, explain correct operation to the customer, using the operating manual.
•
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.
• After installation, explain correct operation to the customer, using the operating
manual.
WARNING
Never touch electrical components immediately after the power supply has been
turned off. Electrical shock may occur. After turning off the power, always wait 5
minutes or more before touching electrical components.
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 pressure in the refrigeration cycle that leads to breakage and even injury.
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.
When installing and relocating the air conditioner, do not mix gases other than the
specified 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.
When installing this system in high humidity locations, install using ground fault
equipment breakers (often referred to in other countries as an ELCB [earth leakage
current breaker]) to reduce the risk of leaking current which may result in electric
shock or potential fire.
Contents
1. SAFETY PRECAUTIONS
……………………………………………………………… 1
2. ABOUT THE PRODUCT
2. 1. Precautions for using R410A refrigerant
………………………………………… 2
2. 2. Special tools for R410A refrigerant
……………………………………………… 2
2. 3. Accessories ………………………………………………………………………… 2
2. 4. System configuration
……………………………………………………………… 2
3. INSTALLATION WORK
3. 1. Selecting an installation location ………………………………………………… 5
3. 2. Drain installation
…………………………………………………………………… 6
3. 3. Installation dimensions …………………………………………………………… 6
3. 4. Transportation of the unit ………………………………………………………… 7
3. 5. Installation of the unit ……………………………………………………………… 7
4. PIPE INSTALLATION - 1
4. 1. Flare connection (pipe connection)
……………………………………………… 8
5. ELECTRICAL WIRING
5. 1. Electrical requirement ……………………………………………………………… 9
5. 2. Unit wiring …………………………………………………………………………… 9
5. 3. Connection diagrams
……………………………………………………………
10
5. 4. Outdoor unit
………………………………………………………………………
10
6. PIPE INSTALLATION - 2
6. 1. Vacuum …………………………………………………………………………… 12
6. 2. Additional charging ……………………………………………………………… 13
7. POWER
………………………………………………………………………………… 13
8. BASE HEATER FORCED OFF FUNCTION
………………………………………… 13
9. TEST RUN
9. 1.
Outdoor unit LED
………………………………………………………………… 13
9. 2. Confirming the operation of indoor unit
………………………………………… 14
10. PUMP DOWN
…………………………………………………………………………… 14
11. CUSTOMER GUIDANCE
……………………………………………………………… 14
AIR CONDITIONER
INSTALLATION MANUAL
PART No. 9374747153
Outdoor Unit
9374747153_IM.indb 1
2014/12/19 14:57:14
