1
English
VRV SYSTEM Inverter Air Conditioners
Installation manual
CONTENTS
1. SAFETY CONSIDERATIONS ..........................................1
2. BEFORE INSTALLATION.................................................3
3. SELECTING INSTALLATION SITE ..................................4
4. PREPARATIONS BEFORE INSTALLATION ....................4
5. INDOOR UNIT INSTALLATION........................................5
6. REFRIGERANT PIPING WORK ......................................5
7. DRAIN PIPING WORK.....................................................6
8. ELECTRIC WIRING WORK.............................................7
9. WIRING EXAMPLE AND HOW TO SET
THE REMOTE CONTROLLER ........................................8
10. FIELD SETTING ............................................................10
11. TEST OPERATION ........................................................10
1.
SAFETY CONSIDERATIONS
Read these “SAFETY CONSIDERATIONS for Installation” care-
fully before installing air conditioning equipment. After complet-
ing 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 Manual
with the Operation Manual for future reference.
Always use a licensed installer or contractor to install this prod-
uct. Improper installation can result in water or refrigerant leak-
age, electrical shock, fire, 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 situ-
ation which, if not avoided, could result
in death or serious injury.
CAUTION
................Indicates a potentially hazardous situ-
ation 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 acci-
dents 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, telephone
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 fire. Exposure to this gas
could cause severe injury or death.
•
After completing the installation work, check that the re-
frigerant gas does not leak throughout the system.
•
Do not install unit in an area where flammable materials
are present due to risk of explosions that can cause se-
rious injury or death.
•
Safely dispose all packing and transportation materials
in accordance with federal/state/local laws or ordi-
nances. Packing materials such as nails and other metal
or wood parts, including plastic packing materials used
for transportation may cause injuries or death by suffo-
cation.
WARNING
•
Only qualified 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 fire.
•
When installing the unit in a small room, take measures
to keep the refrigerant concentration from exceeding al-
lowable safety limits. Excessive refrigerant leaks, in the
event of an accident in a closed ambient space, can lead
to oxygen deficiency.
•
Use only specified accessories and parts for installation
work. Failure to use specified parts may result in water
leakage, electric shocks, fire, 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 insufficient 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 provid-
ed for this unit and that all electrical work is carried out
by qualified personnel according to local state, and na-
tional regulations. An insufficient power supply capacity
or improper electrical construction may lead to electric
shocks or fire.
•
Make sure that all wiring is secured, that specified wires
are used, and that no external forces act on the terminal
connections or wires. Improper connections or installa-
tion may result in fire.
•
When wiring, position the wires so that the electrical
components box lid can be securely fastened. Improper
positioning of the electrical components box lid may re-
sult in electric shocks, fire, or the terminals overheating.
•
Before touching electrical parts, turn off the unit.
•
Be sure to install a ground fault circuit interrupter if one
is not already available. This helps prevent electrical
shocks or fire.
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