Connection pipe assembly
Connection cord
Wall pipe
Decorative tape
Vinyl tape
Wall cap
Saddle
Drain hose
Tapping screws
Sealant
M10 bolt, nut
SPLIT TYPE ROOM AIR CONDITIONER
INSTALLATION MANUAL
(PART NO. 9315342973)
ENGLISH
IMPORTANT!
Please Read Before Starting
This air conditioning system meets strict safety and operating stand-
ards. 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 effi ciently.
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 danger, warning, and caution notices given
in this manual.
• Hazel alerting symbols
Electrical
Safety / alert
If Necessary, Get Help
These instructions are all you need for most installation sites and main-
tenance conditions. If you require help for a special problem, contact
our sales/service outlet or your certifi ed dealer for additional instruc-
tions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installa-
tion 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 com-
pleted or reconnected and checked.
• Highly dangerous electrical voltages are used in this system. Care-
fully refer to the wiring diagram and these instructions when wiring.
Improper connections and inadequate grounding can cause
acciden-
tal 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 fi re hazard.
5 cm or over
The basic installation work procedures are the same as conventional refrigerant (R22) models.
However, pay careful attention to the following points:
(1) Since the working pressure is 1.6 times higher than that of conventional refrigerant(R22) mod-
els, some of the piping and installation and service tools are special.(See the table below.)
Especially, when replacing a conventional refrigerant(R22) model with a new refrigerant
R410A model, always replace the conventional piping and fl are nuts with the R410A piping
and fl are nuts.
(2) Models that use refrigerant R410A have a different charging port thread diameter to pre-
vent erroneous charging with conventional refrigerant(R22) and for safety. Therefore, check
beforehand.[The charging port thread diameter for R410A is 1/2 threads per inch.]
(3) Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with
refrigerant(R22) models. Also, when storing the piping ,securely seal the opening by pinch-
ing, taping, etc.
(4) When charging the refrigerant, take into account the slight change in the composition of the
gas and liquid phases, and always charge from the liquid phase side whose composition is
stable.
This air conditioner uses new refrigerant HFC (R410A).
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 fi ns on the air con-
ditioner can cut your fi ngers.
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 fl oors.
...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 ab-
normal vibration.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable air baffl e.
...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.
When Connecting Refrigerant Tubing
• Keep all tubing runs as short as possible.
• Use the fl are method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the fl are 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 nar-
row or wide. Therefore, to avoid confusion the refrigerant tubing for
your particular model is specifi ed as either “small” or “large” rather
than as “liquid” or “gas”.
When Servicing
• Turn the power OFF at the main circuit breaker panel before open-
ing the unit to check or repair electrical parts and wiring.
• Keep your fi ngers and clothing away from any moving parts.
• Clean up the site after you fi nish, 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.
(1) Do not use the existing (for R22) piping and fl are nuts.
• If the existing materials are used, the pressure inside the refrigerant cycle will rise and cause breakage, injury,
etc. (Use the special R410A materials.)
(2) When installing and relocating the air conditioner, do not mix gases other than the specifi ed 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.
WARNING
CAUTION
When installing pipes shorter than 17ft (5m), sound of the outdoor unit will be transferred to the indoor unit, which
will cause large operating sound or some abnormal sound.
Special tools for R410A
Contents of change
Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous
mixing of other refrigerants, the diameter of each port has been changed.
It is recommended the gauge with seals-0.1 to 5.3 MPa (-1 to 53 bar) for high pressure.
-0.1 to 3.8 MPa (-1 to 38 bar) for low pressure.
To increase pressure resistance, the hose material and base size were changed.
A conventional vacuum pump can be used by installing a vacuum pump adapter.
Special gas leakage detector for HFC refrigerant R410A.
Tool name
Gauge manifold
Charge hose
Vacuum pump
Gas leakage detector
Copper pipes
It is necessary to use seamless copper pipes and it is desir-
able that the amount of residual oil is less than 40 mg/10m.
Do not use copper pipes having a collapsed, deformed or
discolored portion (especially on the interior surface). Oth-
erwise, the expansion value or capillary tube may become
blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than
when using R22, it is necessary to choose adequate materials.
Thicknesses of copper pipes used with R410A are as shown in the table. Never use copper pipes thinner than that in
the table even when it is available on the market.
CONNECTION PIPE REQUIREMENT
Nominal
diameter
3/8in
5/8in
Outer
diameter
9.52mm
15.88mm
Thickness
0.8mm
1.0mm
Maximum height
(between indoor and
outdoor)
Maximum
length
INDOOR UNIT
CUTTING THE HOLE IN THE WALL FOR THE CONNECTING PIPING
(1) Cut a 3-1/8”(80 mm) diameter hole in the wall at the position shown
in the fi gure.
(2) When cutting the wall hole at the inside of the wall hook bracket, cut
the hole to a point of intersection of center marks.
When cutting the wall hole at the outside of the wall hook bracket, cut
the hole at a point of 10mm below.
(3) Cut the hole so that the outside end is lower (3/16” to 3/8” (5 to 10
mm)) than the inside end.
(4) Always align the center of the wall hole. If misaligned, water leakage
will occur.
(5) Cut the wall pipe to match the wall thickness, stick it into the wall cap,
fasten the cap with vinyl tape, and stick the pipe through the hole. (The
connection pipe is supplied in the installation set.)
(6) For left piping and right piping, cut the hole a little lower so that drain
water will fl ow freely.
INSTALLING THE WALL HOOK BRACKET
(1) Install the wall hook bracket so that it is correctly positioned horizon-
tally and vertically. If the wall hook bracket is tiled, water will drip to
the fl oor.
(2) Install the wall hook bracket so that it is strong enough to withstand
the weight of an adult.
●
Fasten the wall hook bracket to the wall with 6 or more screws
through the holes near the outer edge of the bracket.
●
Check that there is no rattle at the wall hook bracket.
WARNING
If the wall pipe is not used, the cord interconnecting
the indoor and outdoor units may touch metal and
cause electric leakage.
Wall hook bracket
Tapping screw
(size: large; quantity: 8)
Wall hook
bracket
Weight
CAUTION
Install the wall hook bracket horizontally and perpen-
dicularly.
FORMING THE DRAIN HOSE AND PIPE
[Rear piping, Right piping, Bottom piping]
●
Install the indoor unit piping in the direction of the wall hole and
bind the drain hose and pipe together with vinyl tape.
●
Install the piping so that the drain hose is at the bottom.
●
Wrap the pipes of the indoor unit that are visible from the outside
with decorative tape.
[For Left rear piping, Left piping]
Interchange the drain cap and the drain hose.
Drain cap
Indoor unit
drain hose
Remove the drain cap by pulling
at the projection at the end of
the cap with pliers, etc.
For left outlet piping, cut off the
piping outlet cutting groove with
a hacksaw.
Right piping
CAUTION
Insert the drain hose and drain cap into the drain port,
making sure that it comes in contact with the back of the
drain port, and then mount it. If the drain hose is not con-
nected properly, leaking will occur.
• Attach the Insulation (Drain hose) to the drain hose.
●
For left piping and left rear piping, align the marks on the wall
hook bracket and shape the connection pipe.
●
Bend the connection piping at the bend radius of 4”(100 mm) or
more and install no more than 1-3/8”(35 mm) from the wall.
●
After passing the indoor piping and drain hose through the wall
hole, hang the indoor unit on the hooks at the top and bottom of
the wall hook bracket.
[Installing the indoor unit]
●
Hang the indoor unit from the hooks at the top of the wall hook
bracket.
●
Insert the spacer, etc. between the indoor unit and the wall hook
bracket and separate the bottom of the indoor unit from the wall.
After hooking the indoor unit to the top hook, hook the fi ttings of the indoor
unit to the two bottom hooks while lowering the unit and pushing it against
the wall.
Top hooks
Indoor unit
(Fitting)
Bottom hooks
Indoor unit
Wall hook bracket
(Spacer)
CONNECTING THE PIPING
CONNECTION
(1) Install the outdoor unit wall cap (supplied with the optional
installation set or procured at the site) to the wall pipe.
(2) Connect the outdoor unit and indoor unit piping.
(3) After matching the center of the fl are surface and tightening
the nut hand tight, tighten the nut to the specifi ed tightening
torque with a torque wrench.
FLARING
(1) Cut the connection pipe to the
necessary length with a pipe
cutter.
(2) Hold the pipe downward so
that cuttings will not enter the
pipe and remove the burrs.
(3) Insert the flare nut onto the
pipe and flare the pipe with a
fl aring tool.
Insert the fl are nut (always use the
flare nut attached to the indoor
and outdoor units respectively)
onto the pipe and perform the fl are
processing with a fl are tool.
Use the special R410A fl are tool,
or the conv-entional (for R22) fl are
tool.
When using the conventional fl are
tool, always use an allowance ad-
justment gauge and secure the A
dimension shown in the table.
BENDING PIPES
(1) When bending the pipe, be careful not to crush it.
(2) To prevent breaking of the pipe, avoid sharp bends.
Bend the pipe with a radius of curvature of 6” (150 mm) or
over.
(3) If the copper pipe is bend the pipe or pulled to often, it will become
stiff.
Do not bend the pipes more than three times at one place.
Tighten with two wrenches.
Torque
wrench
Wrench (fi xed)
Flare nut
Indoor unit pipe
Connection pipe
To prevent gas leakage, coat the fl are
surface with refrigerator oil.
CAUTION
(1) Fasten a fl are nut with a torque wrench as instructed in this manual. If
fastened too tight, the fl are nut may be broken after a long period of
time and cause a leakage of refrigerant.
(2) During installation, make sure that the refrigerant pipe is attached fi rmly
before you run the compressor. Do not operate the compressor under
the condition of refrigerant piping not attached properly with 3-way
valve open. This may cause abnormal pressure in the refrigeration cycle
that leads to breakage and even injury.
A (mm)
Pipe outside diameter
Pipe outside
diameter
ø 9.52 mm (3/8”)
ø 15.88 mm (5/8”)
Flare tool for
R410A, clutch type
0 to 0.5
0 to 0.5
Conventional (R22) fl are tool
Clutch type
1.0 to 1.5
1.0 to 1.5
Wing nut type
1.5 to 2.0
1.5 to 2.0
Flare nut tightening torque and L dimension
Flare nut
3/8” (9.52 mm) dia.
5/8” (15.88 mm) dia.
Tightening torque
21.70 to 30.38 ft•lbs
(300 to 420 kgf•cm)
46.5 to 55.3 ft•lbs
(630 to 750 kgf•cm)
Check if [L] is fl ared uniformly
and is not cracked or scratched.
ELECTRICAL WIRING (INDOOR UNIT)
HOW TO THE INSTALL THE INTER-UNIT WIRE HARNESS
1. Remove the screws, then remove the conduit holder.
2. Fasten the inter-unit wire harness to the conduit holder using the lock nut.
IMPORTANT: Refer to fi gure of inlet-unit wire length about the length of
inter-unit wire harness.
3. Use the screws to install the conduit holder with which Inter-unit wire har-
ness is included.
4. Remove the screws, then remove the cord clamp.
5. Connect inter-unit wire harness to the terminal.
Refer to the wiring diagram.
6. Use the screws to install the cord clamp.
The method of adjusting inter-unit wire harness
To connect inter-unit wire harness to the terminal correctly, please
refer to the fi gure to adjust the length of the part of Inter-unit Wire
harness ahead from conduit holder.
GENERAL
This INSTALLATION MANUAL briefl y 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.
1. TYPE OF COPPER PIPE AND INSULATION MATERIAL
Copper tubing for connection the outdoor unit to the indoor
unit and insulation material is available for purchase locally.
When you purchase them, please specify the following.
A. Deoxidized annealed copper pipe for refrigerant piping as:
STANDARD ACCESSORIES
The following installation accessories are supplied.
Use them as required.
ELECTRICAL REQUIREMENT
Always make the air conditioner power supply a special branch cir-
cuit and provide a special switch and receptacle. Do not extend the
power cord.
The following items are necessary to install this air conditioner. (The
items are not included with the air conditioner and must be purchased
separately.)
Cut each pipe to the appropriate 12” (30 cm)
to16” (40 cm) to dampen vibration between units.
B. Foamed polyethylene insulation for copper pipes as
required to precise length of piping. Wall thickness of the
insulation should not be less than 5/16” (8 mm).
C. Use insulated copper wire for fi eld wiring.
CAUTION
Check local electrical codes and regulations
before obtaining wire. Also, check any specifi ed
instructions or limitations.
ADDITIONAL CHARGE
Refrigerant suitable for a piping length of 66 ft (20 m) is charged in
the outdoor unit at the factory.
When the piping is longer than 66 ft (20 m), additional charging is necessary.
For the additional amount, see the table below.
Between 66 ft (20 m) and 165 ft (50 m), when using a connection
pipe other than that in the table, charge additional refrigerant with
0.43 oz/ ft (40g/1 m) as the criteria.
2. ADDITIONAL MATERIALS REQUIRED FOR INSTALLATION
A. Refrigeration (armored) tape
B. Insulated staples or clamps for connecting wire
(See your local electrical codes.)
C. Putty
D. Refrigeration lubricant
E. Clamps or saddles to secure refrigerant piping
3. OPERATING RANGE
Name and Shape Q’ty Name and Shape Q’ty
Wall hook bracket
Cloth tape
1
1
8
2
1
Name
Q’ty
1
1
1
1
1
1
1
set
1
1
set
1
4
set
SELECTING THE MOUNTING
POSITION
INSTALLATION DIAGRAM OF
INDOOR AND OUTDOOR UNITS
Decide the mounting position with the customer as follows:
1. INDOOR UNIT
(1) Install the indoor unit level on a strong wall which is not subject
to vibration.
(2) The inlet and outlet ports should not be obstructed : the air
should be able to blow all over the room.
(3) Install the unit near an electric outlet or special branch circuit.
(4) Do not install the unit where it will be exposed to direct sunlight.
(5) Install the unit where connection to the outdoor unit is easy.
(6) Install the unit where the drain pipe can be easily installed.
(7) Take servicing, etc. into consideration and leave the spaces
shown in the fi gure. Also install the unit where the fi lter can be
removed.
2. OUTDOOR UNIT
(1) If possible, do not install the unit where it will be exposed to di-
rect sunlight. (If necessary, install a blind that does not interfere
with the air fl ow.)
(2) Do not install the unit where a strong wind blows or where it is very dusty.
(3) Do not install the unit where people pass.
(4) Take your neighbors into consideration so that they are not dis-
turbed by air blowing into their windows or by noise.
(5) Provide the space shown in the fi gure so that the air fl ow is not blocked.
Also for effi cient operation, leave open three of the four direc-
tions front, rear, and both sides.
WARNING
Install at a place that can withstand the weight of
the indoor and outdoor units and install positively so
that the units will not topple or fall.
CAUTION
(1) Do not install where there is the danger of com-
bustible gas leakage.
(2) Do not install near heat sources.
(3) If children under 10 years old may approach the
unit, take preventive measures so that they can-
not reach the unit.
(4) Install the indoor unit on the wall where the
height from the fl oors more than 180 cm.
[INDOOR UNIT]
Remote
controller
[OUTDOOR UNIT]
4”(10 cm) or over
24”(60 cm) or over
4”(10 cm) or over
24”(60 cm) or over
10”
(25 cm)
or over
Tapping
screw(small)
Remote
controller
holder
2”(5 cm) or over
Wall hook bracket
2-1/2”(6 cm)
or over
2”(5 cm)
or over
60”(150 cm)
or over
(Wall cap)
70”(180 cm)
or over
• Do not directly install it on
the ground, otherwise it
will cause failure.
2”(5 cm) or over
• To obtain better operation effi -
ciency, when the outdoor unit
is installed, be sure to open
the front and left side.
Cord clamp
Screw
Square hole
Insert the tab into the square hole of the indoor unit and
fasten with a screw.
Connection cord
1 2
3 4
Cord clamp
Screw
Connection cord
A. For solid core wiring (or F-cable)
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 15/16" (25 mm) to expose the solid wire.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using pliers, bend the solid wire to form a loop suitable for the ter-
minal screw.
(4) Shape the loop wire properly, place it on the terminal board and
tighten securely with the terminal screw using a screwdriver.
B. For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 3/8" (10 mm) to expose the strand wiring.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using a round terminal fastener or pliers, securely clamp a round
terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the ter-
minal screw using a screwdriver.
A. Solid wire
Strip 1
5/1
6" (25 mm)
Insulation
Loop
B. Strand wire
Strip 3/8" (1
0 mm)
Wire
Screw with
special washer
Round terminal
Terminal
board
Terminal block
Wire
Screw with
special washer
Round
terminal
HOW TO CONNECT WIRING TO THE TERMINALS
(1) Match the terminal block numbers and connection
cord colors with those of the outdoor unit.
Erroneous wiring may cause burning of the electric
parts.
(2) Connect the connection cords fi rmly to the terminal
block. Imperfect installation may cause a fi re.
CAUTION
(3) Always fasten the outside covering of the connection
cord with the cord clamp. (If the insulator is chafed,
electric leakage may occur.)
(4) Always connect the ground wire.
(5) Do not use the earth screw for an external connector.
Only use for interconnection between two units.
Round
terminal
7
-1/2" (1
90mm)
1" (25mm)
1" (25mm)
7" (1
75mm)
(1:1)
14AWG
EARTH WIRE
CONDUIT HOLDER
CONDUIT CONNECTOR
CAUTION
lock nut
CONDUIT HOLDER
SCREW
CONDUIT
CONNECTOR
CAUTION
(1) In order to align the drain hose and drain cap, be
sure to insert securely and vertically. Incline in-
sertion will cause water leakage.
(2) When inserting, be sure not to attach any materi-
al besides water. If any other material is attached,
it will cause deterioration and water leakage.
(3) After removing drain hose, be sure not to forget
mounting drain cap.
(4) Be sure to fi x the drain hose with tape to the bottom
of piping.
(5) Prevent drain water frozen under low temperature
environment.
When installing indoor unit's drain hose outdoors, necessary
measure for frost protection should be taken to prevent drain wa-
ter frozen.
• Under low temperature environment (when outdoor temperature
under 32 °F), after cooling operation is executed, water in the
drain hose could be frozen.
Once drain water is frozen, the drain hose will be blocked and
water leakage may be resulted for indoor unit.
Pipe length
99 ft (30 m)
14.2 oz (400 g)
131 ft (40 m)
1 lb 12 oz (800 g)
165 ft (50 m)
2 lb 10 oz (1200 g)
CAUTION
(1) When adding refrigerant, add the refrigerant from
the charging port at the completion of work.
(2) The maximum length of the piping is 165 ft (50
m). If the units are further apart than this, correct
operation can not be guaranteed.
Lower
Centering marks
Wall hook bracket
Fasten with
vinyl tape
(Wall cap)
(Wall pipe)
(Inside)
Wall
(Outside)
3/16” to 3/8”(5 to 10 mm)
Wall hook
bracket
Alignment marks
[Indoor unit piping direction]
The piping can be connected in the 7 directions in the fi gure. When
the piping is connected in direction
2
,
3
,
4
or
5
, cut along the
piping groove in the side of the front panel with a hacksaw.
1
Rear
outlet
2
Right
outlet
3
Bottom outlet
4
Left bottom
outlet
5
Left
outlet
(Rear)
6
Center
outlet
7
Left rear
outlet
1
2
1
CAUTION
In the area with heavy snowfall, if the intake and outlet of outdoor unit
is blocked with snow, it is likely to cause of the breakdown. Please con-
struct a canopy and a pedestal or place the unit on a high stand (local
confi gured).
Remote
controller
holder
Battery
Remote
controller
Tapping screw (big)
Tapping screw (small)
Insulation (Drain hose)
MINIMUM CIRCUIT AMPACITY
MAXIMUM OVERCURRENT PROTECTION
(TIME DELAY FUSE OR HACR TYPE CIRCUIT BREAKER)
22 A
30 A
CAUTION
Cooling/Dry Mode
Outdoor temperature
Indoor temperature
Indoor humidity
About 14 to 115 °F
About 64 to 90 °F
About 80% or less
Small pipe
Outer diameter
0.031496 in
(0.8 mm)
(1.0 mm)
0.03937 in
5/8”(15.88 mm)
3/8”(9.52 mm)
Thickness
Thickness
Outer diameter
Large pipe
Insulation (Drain hose)
Drain hose
Bind with vinyl tape
Indoor unit drain hose
(bottom)
Pipe (top)
Rear piping
Bottom
piping
Lower
3-1/8”(80 mm)
hole
3/8” (10 mm)
or over
3-1/8”(80 mm)
hole
Leveling method
String
Die
A
Pipe
Wall hook
bracket
Tab
50m(165ft)
30m(99ft)
This symbol refers to a hazard or unsafe practice
which can result in personal injury and the potential
for product or property damage.
CAUTION:
WARNING:
This symbol refers to a hazard or unsafe practice
which can result in severe personal injury or death.
Additional
refrigerant
Small piping
Connection piping Large piping
L dimension
1.8 to 2.0mm
2.2 to 2.4mm
Hang weight
9315342973_IM_EN.indd 1
9315342973_IM_EN.indd 1
9/14/2010 4:02:34 PM
9/14/2010 4:02:34 PM
