Read through the Installation Instructions before you proceed with the installation.
In particular, you will need to read under the “IMPORTANT!” section at the top of the page.
Nominal Capacity
F616839
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.
● This air conditioner shall be installed in accordance with
National Wiring Regulations.
● Pay close attention to all warning and caution notices
given in this manual.
This symbol refers to a hazard or
WARNING
CAUTION
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
WARNING
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 over-
heating at connection points and a possible fire hazard.
• To prevent possible hazards from insulation failure,
the unit must be grounded.
• This equipment is strongly recommended to be installed
with Earth Leakage Circuit Breaker (ELCB) or Residual
Current Device (RCD). Otherwise, it may cause electrical
shock and fire in case of equipment breakdown or
insulation breakdown.
unsafe practice which can result
in severe personal injury or death.
This symbol refers to a hazard or
unsafe practice which can result
in personal injury or product or
property damage.
When Wiring
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…
Select an installation location which is rigid and strong
enough to support or hold the unit, and select a location for
easy maintenance.
…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.
Keep the fire alarm and the air
CAUTION
…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 platform that is higher
than drifting snow. Provide snow vents.
outlet at least 5 feet (1.5 m) away
from the unit.
When Connecting Refrigerant Tubing
• Pay particular attention to refrigerant leakages.
• Ventilate the room immediately, in the event that is
refrigerant gas leaks during the installation. Be careful not
to allow contact of the refrigerant gas with a flame as this
will cause the generation of toxic gas.
• Keep all tubing runs as short as possible.
• Apply refrigerant lubricant 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.
WARNING
• When performing piping work, do not mix air
except for specified refrigerant (R410A) in
refrigeration cycle. It causes capacity down, and
risk of explosion and injury due to high tension
inside the refrigerant cycle.
• If the refrigerant comes in contact with a flame,
it produces a toxic gas.
• Do not add or replace refrigerant other than
specified type. It may cause product damage,
burst and injury, etc.
2
• Do not leak refrigerant while piping work for an
installation or re-installation, and while repairing
refrigeration parts.
Handle liquid refrigerant carefully as it may cause
frostbite.
When Servicing
• Turn the power OFF at the main power box (mains)
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.
CAUTION
• Do not touch the air inlet or the sharp
aluminum fins of the outdoor unit. You
may get injured.
• Ventilate any enclosed areas when installing or
testing the refrigeration system. Leaked
refrigerant gas, on contact with fire or heat, can
produce dangerously toxic gas.
• Confirm after installation that no refrigerant gas
is leaking. If the gas comes in contact with a
burning stove, gas water heater, electric room
heater or other heat source, it can cause the
generation of toxic gas.
WARNING
• This product must not be modified or
disassembled under any circumstances.
Modified or disassembled unit may cause fire,
electric shock or injury.
• Do not clean inside the indoor and outdoor
units by users. Engage authorized dealer or
specialist for cleaning.
• In case of malfunction of this appliance, do
not repair by yourself. Contact to the sales
dealer or service dealer for a repair.
Check of Density Limit
The room in which the air conditioner is to be
installed requires a design that in the event of
refrigerant gas leaking out, its density will not exceed
a set limit.
The refrigerant (R410A), which is used in the air
conditioner, is safe, without the toxicity or combustibility of
ammonia, and is not restricted by laws imposed to protect
the ozone layer. However, since it contains more than air,
it poses the risk of suffocation if its density should rise
excessively. Suffocation from leakage of refrigerant is
almost non-existent. With the recent increase in the
number of high density buildings, however, the installation
of multi air conditioner systems is on the increase
because of the need for effective use of floor space,
individual control, energy conservation by curtailing heat
and carrying power, etc.
Most importantly, the multi air conditioner system is able
to replenish a large amount of refrigerant compared to
conventional individual air conditioners.
Others
CAUTION
• Do not sit or step on the unit, you may
fall down accidentally.
• Do not touch the air inlet or the sharp
aluminum fins of the outdoor unit.
You may get injured.
• Do not stick any object into the FAN
CASE.
You may be injured and the unit may
be damaged.
If a single unit of the multi air conditioner system is to be
installed in a small room, select a suitable model and
installation procedure so that if the refrigerant
accidentally leaks out, its density does not reach the limit
(and in the event of an emergency, measures can be
made before injury can occur).
ASHRAE and the International Mechanical Code of the
ICC as well as CSA provide guidance and define
safeguards related to the use of refrigerants, all of which
define a Refrigerant Concentration Level (RCL) of
25 pounds (11.3 kg) per 1,000 cubic feet (28.3 m
R410A refrigerant.
For additional guidance and precautions related to
refrigerant safety, please refer to the following documents:
International Mechanical Code 2012 (IMC-2012)
(or more recently revised)
ASHRAE 15
ASHRAE 34
Refer to the Operating Instructions attached to the optional
Timer Remote Controller or optional High-spec Wired
Remote Controller.
4
1. GENERAL
This booklet briefly outlines where and how to install the
air conditioning system. Please read over the entire set of
instructions for the indoor and outdoor units and make sure all
accessory parts listed are with the system before beginning.
Part NameFigure
Full-scale
installation
diagram
Q’ty
For positioning
1
installation
Remarks
1-1. Tools Required for Installation (not supplied)
1. Flathead screwdriver
2. Phillips head screwdriver
3. Knife or wire stripper
4. Tape measure
5. Carpenter’s level
6. Sabre saw or keyhole saw
7. Hacksaw
8. Core bits
9. Hammer
10. Drill
11. Tube cutter
12. Tube flaring tool
13. Torque wrench
14. Adjustable wrench
15. Reamer (for deburring)
1-2. Accessories Supplied with Unit
The accessory parts are supplied inside the indoor unit.
Open the air-intake grille of the indoor unit and take out a
package of accessories.
See the section “3-2. Preparation Before Installation”.
Table 1-1 (
Part NameFigureQ’tyRemarks
Special
washer
Drain insulator
Ceiling
)
For temporarily
4
suspending indoor unit
from ceiling
2For drain hose joint
Wire cover1For control box
Screw
Part Name
Figure
Operating
Instructions
Installation
Instructions
Warranty
card
●
Use 3/8” (M10) for suspension bolts.
●
Field supply for suspension bolts and nuts.
1-3.
Type of Copper Tube and Insulation Material
1For wire cover
Q’ty
Remarks
1
1
1
If you wish to purchase these materials separately from a local
source, you will need:
1. Deoxidized annealed copper tube for refrigerant tubing.
2. Foamed polyethylene insulation for copper tubes as required
to precise length of tubing. Wall thickness of the insulation
should be not less than 5/16” (8 mm).
3. Use insulated copper wire for field wiring. Wire size varies
with the total length of wiring.
Refer to “4. ELECTRICAL WIRING” for details.
CAUTION
Check local electrical codes and regulations before
obtaining wire.
Also, check any specified instructions or
limitations.
Flare insulator
Clamper
Clamper
Drain hose
Hose band
Screw
Part NameFigure
Side cover (R)
Side cover (L)
1For gas tube joint
1For liquid tube joint
4For flare insulator
1For wiring
For main unit + PVC pipe
1
joints
For drain hose
1
connection
2For side cover (L/R)
Q’ty
1
1
Remarks
(Packed in carton box)
For right side
(Packed in carton box)
For left side
1-4. Additional Materials Required for Installation
1. Refrigeration (armored) tape
2. Insulated staples or clamps for connecting wire (See your
local codes.)
3. Putty
4. Refrigeration tubing lubricant
5. Clamps or saddles to secure refrigerant tubing
6. Scale for weighing
5
2. SELECTING THE INSTALLATION SITE
Ceiling
2-1. Indoor Unit
AVOID:
● areas where leakage of flammable gas may be expected.
● places where large amounts of oil mist exist.
● direct sunlight.
● locations near heat sources which may affect the
performance of the unit.
● locations where external air may enter the room directly.
This may cause “condensation” on the air discharge ports,
causing them to spray or drip water.
● locations where the remote controller will be splashed with
water or affected by dampness or humidity.
● installing the remote controller behind curtains or furniture.
● locations where high-frequency emissions are generated.
DO:
● select an appropriate position from which every corner of the
room can be uniformly cooled.
● select a location where the ceiling is strong enough to
support the weight of the unit.
● select a location where tubing and drain pipe have the
shortest run to the outdoor unit.
● allow room for operation and maintenance as well as
unrestricted air flow around the unit.
● install the unit within the maximum elevation difference
above or below the outdoor unit and within a total tubing
length (L) from the outdoor unit as detailed in the Installation
I
nstructions packed with the outdoor unit.
●
allow room for mounting the remote controller about 3.3ft. (1 m)
off the floor, in an area that is not in direct sunlight or in the flow
of cool air from the indoor unit.
Ceiling
Wall
min. 0.83ft. (250mm)
N OT E
The rear of the indoor unit can be installed flush against
the wall.
Air
discharge
min.
1.64ft. (500mm)
min. 0.83ft. (250mm)
Front view
Side view
Air intake
max.
(250mm)
Obstacle
0.83ft.
Fig. 2-1
6
3. HOW TO INSTALL THE INDOOR UNIT
Ceiling Type (Type T2)
■
Unit: inch (mm)
B
C
3-1. Required Minimum Space for Installation and
Service
(1) Dimensions of suspension bolt pitch and unit
12, 18
24
Length
inch35-55/6437-51/649-1/4
mm911960235
inch48-17/6450-13/649-1/4
mm12261275235
Type
(2) Refrigerant tubing • drain hose position
10-33/64
(267)
Left drain position
Closed with rubber stopper
at time of shipment.
ABC
(196)
7-23/32
(39)
1-17/32
3-35/64
(90)
Rear (Figure shows view from front)Left side
Left drain position
bolt pitch)
(Suspension
31/32
(24.5)
2-3/4
(70)
Gas tubing
Liquid tubing
Right drain position
(190)
7-31/64
(265)
10-7/16
A
(Suspension bolt pitch)
3-25/64
(131)
5-5/32
3-35/64
(90)
Right drain position
(196)
7-23/32
(39)
1-17/32
27-11/64 (690)
31/32
(24.5)
Right side
(Liquid tubing •
Gas tubing)
7-23/64
10-33/64 (267)
Air intake
Air discharge
Fig. 3-1
Unit: inch (mm)
Fig. 3-2
(3) Unit opening position (Refrigerant tubing • drain hose • power inlet port • remote control wiring inlet port)
Unit: inch (mm)
Left-side drain hose
outlet port
Top outlet port
2-29/32 (74)
4-3/32 (104)
Right-side drain
hose outlet port
Side cover
Rear outlet port (Figure shows view from front)
Remote control wiring
and inter-unit wiring inlet port
Outside air intake duct
4-23/32
(120)
(105)
4-9/64
(196)
7-23/32
3-35/64
(90)
connection port
(ø3-15/16 (100), cutout)
Left-rear side drain
hose outlet port
(cutout)
4-27/32
(123)
(131)
5-5/32
7-9/32
Cover of tubing hole
Power Supply inlet
2-13/32 (61
4-27/32 (123
4-3/32
(104)
4-31/64
(114)
)
*1 Use a compass saw, jig saw or similar tool and cut along
)
the indented portion of the side cover and make a hole
inside the cover.
*2 When pulling the refrigerant tubing from the upper side,
cut along the indented portion and pass the tubing
through the hole.
N OT E
Be sure to use sealing putty to seal off the opening to
prevent dust.
Fig. 3-3
7
3-2. Preparation Before Installation
(1) Remove the bracket (for suspending the indoor unit).
Loose the M8 or 5/16” suspension bolts.
Then remove the bracket. (Fig. 3-4)
N OT E
Loosen the M8 or 5/16” suspension bolts and expose the
axis of bolts less than 5/16” (8 mm).
Less than 5/16” (8 mm)
M4 or 5/32” screw for
preventing bracket from
taking off
Remove the air-intake grille before suspending the indoor unit. First,
(2)
remove 2 attachment screws fixed with the latches. Open the airintake grille and hold the claws of the hinges on both sides. Then
remove the air-intake grille and suspension lug located on the left
and right side of the indoor unit.
M8 or 5/16” suspension bolts
for suspending the indoor unit
Bracket
Fig. 3-4
(4) Remove the center bracket.
When wiring, remove the center bracket if necessary. When
wiring is completed, reinstall the center bracket in its original
position.
Center bracket
Fig. 3-8
3-3. Suspending the Indoor Unit
N OT E
Since the diagram is made of paper, it may shrink or stretch
slightly because of high temperature or humidity.
For this reason, before drilling the holes maintain the correct
dimensions between the markings.
(1) If the full-scale installation diagram is placed on the ceiling, the
locations of each suspension bolt can be chosen.
Take a pencil and mark the drill holes (Fig. 3-9).
Full-scale installation diagram
Ceiling
Air-intake grille
1
1
2
claws
Air-intake grille
Remove
Remove
(3) Remove the side plate to the tubing side.
Rear & upper side
tubing connection
Right side tubing
connection
Remove
Remove 2 screws.
Slide the side plate in the direction of
the arrow and remove it.
Do not remove the side plate.
Screw
Latch
Slide
Fig. 3-5
Fig. 3-6
Full-scale installation diagram
Wall
Fig. 3-9
(2) If the full-scale installation diagram is bent at right angle to the
ceiling and wall, the locations of the inlet for indoor tubing and
wiring are chosen and the locations of each suspension bolt
can also be chosen.
Take a pencil and mark the drill holes (Fig. 3-10).
Ceiling
Wall
Full-scale installation diagram
Full-scale installation diagram
Fig. 3-10
N OT E
The dimension when the indoor unit is placed tightly
against the wall.
When installing away from the wall, drainage gradient
should be taken into consideration.
(3)
Drill holes at the 4 points indicated on the full-scale diagram.
(4) Depending on the ceiling type:
a) Insert suspension bolts (Fig. 3-11).
or
b) Use existing ceiling supports or construct a suitable
support (Fig. 3-12).
Hole-in-anchor
Hole-in-plug
Concrete
Insert
Ceiling tiles
Ceiling support
Screw
Side plate
Fig. 3-7
Suspension bolt (M10 or 3/8”)
(not supplied)
8
Fig. 3-11Fig. 3-12
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