1
VRV SYSTEM Inverter Air Conditioners
Installation manual
CONTENTS
1. SAFETY CONSIDERATIONS..........................................1
2. BEFORE INSTALLATION................................................2
3. SELECTING INSTALLATION SITE .................................3
4. PREPARATIONS BEFORE INSTALLATION...................4
5. INDOOR UNIT INSTALLATION.......................................4
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 ........................................7
10. FIELD SETTING ..............................................................9
11. TEST OPERATION........................................................10
1. SAFETY CONSIDERATIONS
Please read these “SAFETY CONSIDERATIONS” carefully
before installing air conditioning equipment and be sure to
install it correctly. After completing the installation, make sure
that the unit operates properly during the start-up operation.
Please instruct the customer on how to operate the unit and
keep it maintained.
Also, inform customers that they should store this installation
manual along with the operation manual for future reference.
This air conditioner comes under the term “appliances not
accessible to the general public”.
Meaning of warning, caution and note symbols.
WARNING
.............Indication a potentially hazardous sit-
uation which, if not avoided, could
result in death or serious injury.
CAUTION
..............Indication a potentially hazardous sit-
uation which, if not avoided, may
result in minor or moderate injury. It
may also be sued to alert against
unsafe practices.
NOTE
....................Indication situation that may result in
equipment or property-damage-only
accidents.
WARNING
• Ask your dealer or an authorized personnel to carry out
installation work. Do not try to install the unit by your-
self.
Improper installation may result in water leakage, electric
shocks or fire.
•
Perform installation work in accordance with this
installation manual.
Improper installation may result in water leakage, electric
shocks or fire.
•
When installing the unit in a small room, take mea-
sures against to keep refrigerant concentration from
exceeding allowable safety limits in the event of refrig-
erant leakage.
Contact the place of purchase for more information. Excessive
refrigerant in a closed ambient can lead to oxygen deficiency.
•
Be sure to use only the specified accessories and
parts for installation work.
Failure to use the specified parts may result in water leakage,
electric shocks, fire or the unit falling.
•
Install the air conditioner on a foundation strong
enough to withstand the weight of the unit.
A foundation of insufficient strength may result in the equip-
ment falling and causing injuries.
•
Carry out the specified installation work after taking
account of strong winds, typhoons or earthquakes.
Improper installation work may result in the equipment 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 an authorized personnel according to local
laws, regulations and this installation manual.
An insufficient power supply capacity or improper electrical
construction may lead to electric shocks or fire.
•
Make sure that all wiring is secured, the specified
wires are used, and no external forces act on the ter-
minal connections or wires.
Improper connections or installation may result in fire.
•
When wiring the power supply and connecting the
remote controller wiring and transmission wiring,
position the wires so that the electric parts box lid can
be securely fastened.
Improper positioning of the electric parts box lid may result in
electric shocks, fire or the terminals overheating.
•
If the refrigerant gas leaks during installation, ventilate
the area immediately.
Toxic gas may be produced if the refrigerant gas comes into
contact with fire.
•
After completing the installation work, check that the
refrigerant gas does not leak.
Toxic gas may be produced if the refrigerant gas leaks into
the room and comes into contact with a source of fire, such
as a fan heater, stove or cooker.
•
Before touching electrical parts, turn off the unit.
•
Ground the air conditioner. Do not connect the ground
wire to gas or water pipes, lightning rod or a telephone
ground wire.
Incomplete grounding may result in electric shocks.
•
Do not touch the switch with wet fingers.
Touching a switch with wet fingers can cause electric shock.
•
Install a leak circuit breaker, as required.
If a leak circuit breaker is not installed, electric shock may
result.
•
Do not install the air conditioner in the following loca-
tions:
(a) where a mineral oil mist or an oil spray or vapor is pro-
duced, for example in a kitchen. Plastic parts may deteriorate
and fall off or result in water leakage.
(b) where corrosive gas, such as sulfurous acid gas, is pro-
duced. Corroding copper pipes or soldered parts may result
in refrigerant leakage.
(c) near machinery emitting electromagnetic waves. Electro-
magnetic waves may disturb the operation of the control sys-
tem and result in a malfunction of the equipment.
(d) where flammable gases may leak, where there are car-
bon fiber or ignitable dust suspensions in the air, or where
volatile liquids such as thinner or gasoline are handled.
Operating the unit in such conditions may result in fire.
