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English
VRV SYSTEM Inverter Air Conditioners
Installation manual
CONTENTS
1. SAFETY CONSIDERATIONS ........................................... 1
2. BEFORE INSTALLATION .................................................. 3
3. SELECTING INSTALLATION SITE ................................... 3
4. PREPARATIONS BEFORE INSTALLATION AND
INSTALLATION .................................................................. 4
5. REFRIGERANT PIPING WORK ....................................... 5
6. DRAIN PIPING WORK ...................................................... 6
7. INSTALLING THE DUCT ................................................... 6
8. ELECTRIC WIRING WORK .............................................. 6
9. WIRING EXAMPLE ........................................................... 7
10. FIELD SETTING AND TEST RUN .................................. 10
SAFETY CONSIDERATIONS
1.
Read these “SAFETY CONSIDERATIONS for Installation”
carefully before installing air conditioning equipment. After
completing the installation, make sure that the unit operates
properly during the startup operation.
Instruct the customer on how to operate and maintain the unit.
Inform customers that they should store this Installation Manu-
al with the Operation Manual for future reference.
Always use a licensed installer or contractor to install this
product. Improper installation can result in water or refrigerant
leakage, electrical shock, fi re, or explosion.
Meanings of
DANGER
,
WARNING
,
CAUTION
, and
NOTE
Symbols:
DANGER
................ Indicates an imminently hazardous
situation which, if not avoided, will
result in death or serious injury.
WARNING
.............. Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTION
............... Indicates a potentially hazardous
situation which, if not avoided, may
result in minor or moderate injury.
It may also be used to alert against
unsafe practices.
NOTE
...................... Indicates situations that may result in
equipment or property-damage
accidents only.
DANGER
Refrigerant gas is heavier than air and replaces oxygen.
•
A massive leak can lead to oxygen depletion, especially
in basements, and an asphyxiation hazard could occur
leading to serious injury or death.
Do not ground units to water pipes, gas pipes, tele-
•
phone wires, or lightning rods as incomplete grounding
can cause a severe shock hazard resulting in severe
injury or death. Additionally, grounding to gas pipes
could cause a gas leak and potential explosion causing
severe injury or death.
If refrigerant gas leaks during installation, ventilate the
•
area immediately. Refrigerant gas may produce toxic
gas if it comes in contact with fi re. Exposure to this gas
could cause severe injury or death.
After completing the installation work, check that the
•
refrigerant gas does not leak throughout the system.
Do not install unit in an area where fl ammable materials
•
are present due to risk of explosions that can cause
serious injury or death.
Safely dispose all packing and transportation materials
•
in accordance with federal/state/local laws or ordinanc-
es. Packing materials such as nails and other metal or
wood parts, including plastic packing materials used for
transportation may cause injuries or death by suffoca-
tion.
WARNING
Only qualifi ed personnel must carry out the installation
•
work. Installation must be done in accordance with this
installation manual. Improper installation may result in
water leakage, electric shock, or fi re.
When installing the unit in a small room, take measures
•
to keep the refrigerant concentration from exceeding
allowable safety limits. Excessive refrigerant leaks, in
the event of an accident in a closed ambient space, can
lead to oxygen defi ciency.
Use only specifi ed accessories and parts for installation
•
work. Failure to use specifi ed parts may result in water
leakage, electric shocks, fi re, or the unit falling.
Install the air conditioner on a foundation strong
•
enough that it can withstand the weight of the unit. A
foundation of insuffi cient strength may result in the unit
falling and causing injuries.
Take into account strong winds, typhoons, or earth-
•
quakes when installing. Improper installation may result
in the unit falling and causing accidents.
Make sure that a separate power supply circuit is pro-
•
vided for this unit and that all electrical work is carried
out by qualifi ed personnel according to local. state, and
national regulations. An insuffi cient power supply
capacity or improper electrical construction may lead to
electric shocks or fi re.
Make sure that all wiring is secured, that specifi ed wires
•
are used, and that no external forces act on the terminal
connections or wires. Improper connections or installa-
tion may result in fi re.
When wiring, position the wires so that the terminal box
•
lid can be securely fastened. Improper positioning of
the terminal box lid may result in electric shocks, fi re, or
the terminals overheating.
Before touching electrical parts, turn off the unit.
•
It is recommended to install a ground fault circuit inter-
•
rupter if one is not already available. This helps prevent
electrical shocks or fi re.
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