1 2
3 4
SPLIT TYPE ROOM AIR CONDITIONER
INSTALLATION MANUAL
(PART NO. 9315342935-01)
ENGLISH
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 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.
WARNING:
This symbol refers to a hazard or unsafe practice which
can result in severe personal injury or death.
CAUTION:
This symbol refers to a hazard or unsafe practice which
can result in personal injury and the potential for product
or property damage.
•
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 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
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 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 overheating at con-
nection 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) models,
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 prevent
erroneous charging with conventional refrigerant(R22) and for safety. Therefore, check before-
hand. [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 pinching,
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 conditioner
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 abnor-
mal 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 opening
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 10 ft (3m), 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 desirable
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). Otherwise, 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
1/4in
5/8in
Outer
diameter
6.35mm
15.88mm
Thickness
0.8mm
1.0mm
Maximum height
(between indoor and
outdoor)
20m(66ft)
Maximum
length
30m(99ft)
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.
Lower
Centering marks
Lower
3-1/8”(80 mm)
hole
Wall hook bracket
Fasten with
vinyl tape
(Wall cap)
(Wall pipe)
(Inside)
Wall
(Outside)
3/16” to 3/8”(5 to 10 mm)
3-1/8”(80 mm)
hole
3/8” (10 mm)
or over
INSTALLING THE WALL HOOK BRACKET
(1) Install the wall hook bracket so that it is correctly positioned horizontally
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
Leveling method
Hang weight
from here.
Tapping screw
(size: large; quantity: 8)
Wall hook
bracket
String
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
Bind with vinyl tape
Indoor unit drain hose
(bottom)
Pipe (top)
Rear piping
Bottom
piping
Insulation (Drain hose)
Drain hose
CAUTION
Insert the drain hose and drain cap into the drain port, mak-
ing sure that it comes in contact with the back of the drain
port, and then mount it. If the drain hose is not connected
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.
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 cut-
ter.
(2) Hold the pipe downward so that
cuttings will not enter the pipe
and remove the burrs.
(3) Insert the fl are nut onto the pipe
and fl are the pipe with a fl aring
tool.
Insert the fl are nut (always use the
fl are nut attached to the indoor and
outdoor units respectively) onto the
pipe and perform the fl are process-
ing with a fl are tool.
Use the special R410A fl are tool,
or the conventional (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 be-
come 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 2-way or 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 6.35 mm (1/4”)
ø 15.88 mm (5/8”)
Flash 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
1/4” (6.35 mm) dia.
5/8” (15.88 mm) dia.
Tightening torque
11.8 to 13.3 ft•lbs
(160 to 180 kgf•cm)
46.5 to 55.3 ft•lbs
(630 to 750 kgf•cm)
L dimension
1.4 to 1.7mm
2.2 to 2.4mm
A
Check if [L] is fl ared uniformly
and is not cracked or scratched.
Die
Pipe
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.)
ADDITIONAL CHARGE
Refrigerant suitable for a piping length of 49 ft (15 m) is charged in
the outdoor unit at the factory.
When the piping is longer than 49 ft (15 m), additional charging is necessary.
For the additional amount, see the table below.
Between 49 ft (15 m) and 99 ft (30 m), when using a connection pipe
other than that in the table, charge additional refrigerant with 0.21 oz/
ft (20g/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
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 99 ft (30
m). If the units are further apart than this, correct
operation can not be guaranteed.
Name and Shape Q’ty Name and Shape Q’ty
Wall hook bracket
Remote
control
unit
Battery
Tapping screw (big)
Cloth tape
1
1
2
Remote control
unit holder
1
1
8
2
Tapping screw (small)
Insulation (Drain hose)
1
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 direct
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 directions
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 combus-
tible 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 cannot
reach the unit.
(4) Install the indoor unit on the wall where the height
from the fl oors more than 240 cm.
[INDOOR UNIT]
[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 pip-
ing 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
Remote
control unit
[OUTDOOR UNIT]
4”(10 cm) or over
24”(60 cm) or over
4”(10 cm) or over
12”(30 cm) or over
12”
(30 cm)
or over
Tapping
screw
(small)
Remote
control unit
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
21-1/4”(54 cm)
1
2-1
7/32”(32 cm)
• Do not directly install it on
the ground, otherwise it
will cause failure.
2”(5 cm) or over
CAUTION
(1) When the outdoor temperature is 32
°
F or less, do not use the accessory
drain pipe and drain cap. If the drain pipe and drain cap are used, the
drain water in the pipe may freeze in extremely cold weather. (Reverse
cycle model only)
(2) 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).
• To obtain better operation effi -
ciency, when the outdoor unit
is installed, be sure to open
the front and left side.
Cord clamp
Tab
Screw
Square hole
Insert the tab into the square hole of the
indoor unit and fasten with a screw.
Connection cord
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 terminal
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 terminal
screw using a screwdriver.
A. Solid wire
Str
ip 15/16”
(25 mm)
Insulation
Loop
B. Strand wire
Str
ip 3/8”
(10 mm)
Wire
Screw with spe-
cial washer
Round
terminal
Terminal
board
Terminal block
Wire
Screw with spe-
cial washer
Round
terminal
HOW TO CONNECT WIRING TO THE TERMINALS
Fig. 14
(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" (190mm)
1" (25mm)
1" (25mm)
7" (175mm)
(1:1)
14AWG
EARTH WIRE
CONDUIT HOLDER
CONDUIT CONNECTOR
CAUTION
lock nut
CONDUIT HOLDER
SCREW
CONDUIT
CONNECTOR
Heating Mode
About 5 to 75 °F
88 °F or less
Outdoor temperature
Indoor temperature
Indoor humidity
Cooling/Dry Mode
About 14 to 115 °F
About 64 to 90 °F
About 80% or less
Pipe length
Additional
refrigerant
66 ft (20 m)
3.5 oz (100 g)
83 ft (25 m)
7.0 oz (200 g)
99 ft (30 m)
10.5 oz (300 g)
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.
Small pipe
Large pipe
Outer diameter
Thickness
Outer diameter
Thickness
1/4”(6.35 mm)
0.031496 in
5/8”(15.88 mm)
0.03937 in
(0.8 mm)
(1.0 mm)
CAUTION
MINIMUM CIRCUIT AMPACITY
14 A
MAXIMUM OVERCURRENT PROTECTION 20
A
(TIME DELAY FUSE OR HACR TYPE CIRCUIT BREAKER)
Connection pipe assembly
Connection cord
Wall pipe
Decorative tape
Vinyl tape
Wall cap
Saddle
Drain hose
Tapping screws
Sealant
Name
Q’ty
1
1
1
1
1
1
1
set
1
1
set
1
CAUTION
(1)
In order to align the drain hose and drain cap, be
sure to insert securely and vertically. Incline inser-
tion will cause water leakage.
(2)
When inserting, be sure not to attach any material
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
water frozen.
• Under low temperature environment (when outdoor tempera-
ture 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.
Connection piping
Small piping
Wall hook
bracket
Alignment marks
Large piping
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
Wall hook
bracket
7
Left rear
outlet
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