Page 1
SPLIT TYPE ROOM AIR CONDITIONER
This air conditioner uses new refrigerant HFC (R410A).
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:
INSTALLATION MANUAL
(PART NO. 9315342119) 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 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.
• Observe all local, state, and national electrical codes.
• Pay close attention to all danger, warning, and caution notices given in
this manual.
WARNING:
CAUTION:
• Hazel alerting symbols
This symbol refers to a hazard or 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 and the potential for product
or property damage.
Electrical
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.
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...
...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 floors.
...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.
(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 flare nuts with the R410A piping and flare
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
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 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.
Special tools for R410A
Tool name
Gauge manifold
Charge hose
Vacuum pump
Gas leakage detector
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.
Contents of change
Safety / alert
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
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.
...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 flare method for connecting tubing.
• 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.
NOTE:
Depending on the system type, liquid and gas lines may be either narrow or wide. Therefore, to avoid confusion the refrigerant tubing for your
particular model is specified 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 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 being serviced.
• After installation, explain correct operation to the customer, using the
operating manual.
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
CONNECTION PIPE REQUIREMENT
Nominal
diameter
1/4in
5/8in
Outer
diameter
6.35mm
15.88mm
Thickness
0.8mm
1.0mm
Maximum
length
30m(99ft)
Maximum height
(between indoor and
outdoor)
20m(66ft)
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.
WARNING
(1) Do not use the existing (for R22) piping and flare 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 specified 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.
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.
Page 2
OUTDOOR UNIT
LO
HI
208/230V
208/230V
208/230V
(L)
(N)
OUTDOOR UNIT INSTALLATION
● Set the unit on a strong stand, such as one made of concrete blocks to
minimize shock and vibration.
● Do not set the unit directly on the ground because it will cause trouble.
Connector cover removal
● Remove the tapping screws.
Installing the connector cover
(1) After inserting the two front hooks, then insert the rear hook.
(2) Tighten the tapping screws.
WARNING
(1) Install the unit where it will not be tilted by more
than 5°.
(2) When installing the outdoor unit where it may
exposed to strong wind, fasten it securely.
AIR PURGE
Always use a vacuum pump to purge the air.
Refrigerant for purging the air is not charged in
the outdoor unit at the factory.
Close the high pressure side valve of the gauge manifold fully and
do not operate it during the following work.
Tapping screw
Front hooks
Rear hooks
Connector cover
CAUTION
(1) Refrigerant must not be discharged into atmos-
phere.
(2) After connecting the piping , check the joints for
gas leakage with gas leak detector.
ELECTRICAL WIRING (OUTDOOR UNIT)
1. Remove the screws, then remove the control box cover.
2. Fasten the Inter unit wire harness and power supply to the conduit holder using the lock nut.
3. Connect inter-unit wire harness and power supply to the terminal.
Refer to the wiring diagram
4. Use the screws to install the control box cover.
WARNING
Be sure to comply with local codes while running the wire from the indoor unit to the outdoor
unit (size of wire and wiring method, etc. ).
Every wire must be connected firmly.
No wire should be allowed to touch refrigerant
tubing, the compressor or any moving part.
Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard
may also exist. Therefore, be sure all wiring is
tightly connected.
Connect wires to the matching numbers of terminals.
NOTE:
• Connector trade size for this unit is 1/2” (12.7 mm). The connector
can be bought at a hardware store. Refer to “How to connect wir-
ing to the terminals” for instructions on connecting depending on
the wire type you are using.
• The fuse located in the outdoor unit provides power supply protection and may blow when power is applied if the system has
been incorrectly wired.
Lock nut
1. Check if the piping connections are secure.
2. Check that the stems of 2-way valve and 3-way valve are closed
fully.
3. Connect the gauge manifold charge hose to the charging port
of the 3-way valve (side with the projection for pushing in the
valve core).
4. Open the low pressure side valve of the gauge manifold fully.
5. Operate the vacuum pump and start pump down.
6. Slowly loosen the flare nut of the 3-way valve and check if air
enters, then retighten the flare nut.
(When the flare nut is loosened the operating sound of the
vacuum pump changes and the reading of the compound
pressure gauge goes from minus to zero.)
7. Pump down the system for at least 15 minutes, then check if the
compound pressure gauge reads -0.1 MPa (-76 cmHg, -1 bar).
10. Fully open the valve stems of the 2-way valve and 3-way valve
using a hexagon wrench. (After the valve stem begins to turn,
turn it with a torque of less than 2.14 ft•lbs (30 kgf•cm) until it
stops turning.)
11. Firmly tighten the 2-way valve and 3-way valve blank cap and
the charging port cap.
Gauge manifold
-0.1 MPa
(-76 cmHg
-1 bar)
Low pressure
side valve
Charge hose
Pressure gauge
High
pressure
side valve
(closed)
Charge
hose
Vacuum pump
3-way valve
Charging port cap
Compound pressure gauge
2-way valve
Flare nut
Valve stem
Blank cap
Charging port
Indoor unit
Terminal
G
3
2
1
DISCONNECT
SWITCH
(FIELD SUPPLY)
Indoor unit
terminal block
Grounding line
Control line
208/230V
208/230V
208/230V
(Inter Unit)
Power line
Outdoor unit
Terminal
G
5
(N)
4
(L)
3
2
1
POWER SUPPLY
1 phase, 208/230V
Outdoor unit
terminal block
Cord Clamp
Conduit
connector
Power supply
Inter-unit
wire harness
8. At the end of pump down, close the low pressure side gauge of
the gauge manifold fully and stop the vacuum pump.
9. Slowly loosen the valve stem of the 3-way valve. When the
compound pressure gauge reading reaches 0.1-0.2 MPa,
retighten the valve stem and disconnect the charge hose from
the 3-way valve charging port.
(If the stem of the 3-way valve is opened fully before the
charge hose is disconnected, it may be difficult to disconnect
the charge hose.)
Tightening torque
Blank cap (2-way valve) 14.75 to 18.44 ft•lbs (200 to 250 kgf•cm)
Blank cap (3-way valve) 22.12 to 25.81 ft•lbs (300 to 350 kgf•cm)
Charging port cap 7.37 to 8.85 ft•lbs (100 to 120 kgf•cm)
Earth screw
G
12
4
3
12
Disconnect switch
45
3
Power supply line
Earth screw
G
Page 3
GENERAL
This INSTALLATION MANUAL 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.
1.
TYPE OF COPPER PIPE AND INSULATION MATERIAL
Copper tubing for connectin 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:
Small pipe Large pipe
Outer diameter Thickness Outer diameter Thickness
1/4”(6.35 mm)
0.031496 in
(0.8 mm) (1.0 mm)
5/8”(15.88 mm)
Cut each pipe to the appropriate length +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 field wiring.
CAUTION
Check local electrical codes and regulations
before obtaining wire. Also, check any specified
instructions or limitations.
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
Cooling/Dry Mode
Outdoor temperature
Indoor temperature
Indoor humidity
About 14 to 115 °F
About 64 to 90 °F
About 80% or less
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.
Pipe length
Additional
refrigerant
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.
66 ft (20 m)
3.5 oz (100 g)
83 ft (25 m)
9.0 oz (200 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 99 ft (30
m). If the units are further apart than this, correct operation can not be guaranteed.
0.03937 in
Heating Mode
About 5 to 75 °F
88 °F or less
99 ft (30 m)
10.5 oz (300 g)
STANDARD ACCESSORIES
The following installation accessories are supplied. Use them as
required.
Name and Shape Q’ty Name and Shape Q’ty
Wall hook bracket
Remote
control
unit
Cloth tape
1
Tapping screw (big)
1
8
1
Tapping screw (small)
2
Battery
2
Insulation (Drain hose)
1
Remote control
unit holder
Drain pipe
1
(Reverse cycle
model only)
The following items are necessary to install this air conditioner. (The
items are not included with the air conditioner and must be purchased
separately.)
Name
Connection pipe assembly
Connection cord
Wall pipe
Decorative tape
Vinyl tape
Wall cap
Saddle
Drain hose
Tapping screws
Sealant
1
Q’ty
1
1
1
1
1
1
1 set
1
1 set
1
ELECTRICAL REQUIREMENT
Always make the air conditioner power supply a special branch circuit and provide a special switch and receptacle. Do not extend the
power cord.
CAUTION
MINIMUM CIRCUIT AMPACITY 21 A
MAXIMUM OVERCURRENT PROTECTION
(TIME DELAY FUSE OR HACR TYPE CIRCUIT BREAKER)
25 A
SELECTING THE MOUNTING
POSITION
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 figure. Also install the unit where the filter 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 flow.)
(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 figure so that the air flow is not blocked.
Also for efficient 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 floors more than 240 cm.
[Indoor unit piping direction]
The piping can be connected in the 7 directions in the figure. 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.
(Rear)
5 Left
outlet
2 Right
outlet
3 Bottom outlet
1 Rear
outlet
6 Center
outlet
4 Left bottom
7 Left rear
outlet
outlet
INSTALLATION DIAGRAM OF
INDOOR AND OUTDOOR UNITS
[INDOOR UNIT]
2-1/2”(6 cm)
2”(5 cm) or over
60”(150 cm)
or over
or over
95”(240 cm)
or over
Remote
control unit
[OUTDOOR UNIT]
24”(60 cm) or over
4”(10 cm) or over
12”(30 cm) or over
• Do not directly install it on
the ground, otherwise it
will cause failure.
• To obtain better operation
21-1/4”(54 cm)
efficiency, when the outdoor
unit is installed, be sure to
open the front and left side.
2”(5 cm) or over
(32 cm)
12-9/16”
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 extremety 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 construct a canopy and a pedestal or place the unit on a high stand (local
configured).
Wall hook bracket
2”(5 cm)
or over
(Wall cap)
Remote
control unit
holder
Tapping
screw(small)
4”(10 cm) or over
12”
(30 cm)
or over
Outdoor
unit bottom
Drain hose
Page 4
FINISHING
(1) Insulate between pipes.
● For rear, right, and bottom piping, overlap the connection pipe heat insulation and indoor unit pipe heat insulation and bind them with vinyl tape
so that there is no gap.
● For left and left rear piping, butt the connection pipe heat insulation and
indoor unit pipe heat insulation together and bind them with and vinyl
tape so that there is no gap.
● For left and left rear piping, wrap the area which accommodates the rear
piping housing section with cloth tape.
● For left and left rear piping, bind the connection cord to the top of the
pipe with vinyl tape.
● For left and left rear piping, bundle the piping and drain hose together by
wrapping them with cloth tape over the range within which they fit into
the rear piping housing section.
(2) Temporarily fasten the connection cord along the connection pipe with vinyl
tape. (Wrap to about 1/3 the width of the tape from the bottom of the pipe so
that water does not enter.)
(3) Fasten the connection pipe to the outside wall with saddles, etc.
(4) Fill the gap between the outside wall pipe hole and the pipe with sealer so
that rain water and wind cannot blow in.
(5) Fasten the drain hose to the outside wall, etc.
(Outside wall cap)
Pipe
(Saddle)
(Outdoors)
Wall
(Sealer putty)
Connection pipe
(heat insulation)
Bind the pipes together so
that there is no gap.
Left piping
Check the following:
GOOD
Pipe
Drain hose
For connection from the left rear
Wall pipe
Drain hose
Saddle
Overlap the insulation
Cloth tape
Connection cord
Pipe
Drain hose
BAD
Lifted up
Vinyl tape
Wrap with
cloth tape
Drain hose
Connection cord
Connection pipe
Indoor unit pipe
(heat insullation)
BAD BAD
Wave End in water
FRONT PANEL REMOVAL AND INSTALLATION
THE INTAKE GRILLE REMOVAL
(1) Open the intake grille.
(2) Pull down the knob.
(3) Lift the intake grille upward, until the axle at the top of the
intake grille is removed.
THE INTAKE GRILLE INSTALLATION
(1) The fixing axle of the intake grille is installed on the Panel.
(2) Lay down the intake grille.
Screws (6 position)
THE FRONT PANEL REMOVAL
(1) Remove intake grille (Reference the intake grille removal.)
(2) Remove six screws.
(3) The thumb is hung on the lower part as shown in the figure,
and it pulls to the front, pushing [-] mark , and bottom hooks
(two position) is removed from wall hook bracket.
(4) The front panel is pulled to the front, raising the upper sur-
face, and a front panel is removed.
Top holes (two sides)
THE FRONT PANEL INSTALLATION
(1) Firstly, fit the lower part of the front panel, and insert top and
bottom hooks. (Three top sides)
(2) Six screws is attached.
(3) The intake grille is attached.
Indoor unit
Top hole (center)
CAUTION
Install the front panel and INTAKE GRILLE securely. If installation is imperfect, the front panel or INTAKE GRILLE
may fall off and cause injury.
Push
Intake grille
Mounting shaft
Bearing
Front panel
Front panel
Wall hook bracket
Push
[-] mark
Intake grille
Knob
Front panel
Top hook (center)
Front panel
Top hooks
(two sides)
TEST RUNNING
● Perform test operation and check items 1 and 2 below.
● For the test operation method, refer to the operating manual.
● The outdoor unit, may not operate, depending on the room temperature. In this case, press the test run button on the remote control unit
while the air conditioner is running, (Point the transmitter section of the remote control unit toward the air conditioner and press the test run
button with the tip of a ball-point pen, etc.)
● To end test operation, press the remote control unit START/STOP button.
(When the air conditioner is run by pressing the test run button, the OPERATION indicator lamp and TIMER indicator lamp will simultaneously flash slowly.)
1. INDOOR UNIT
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do the air flow-direction louver operate normally?
(4) Is the drain normal?
Transmitter section
2. OUTDOOR UNIT
(1) Is there any abnormal noise and vibration during operation?
(2) Will noise, wind, or drain water from the unit disturb the neighbors?
(3) Is there any gas leakage?
Test run button
POWER
WARNING
(1) The rated voltage of this product is 208/230 V AC
60 Hz.
(2) Before turning on the power, check if the voltage
is within the 208 V -10 % to 230 V +10% range.
(3) Always use a special branch circuit and install a
special receptacle to supply power to the room
air conditioner.
(4) Use a circuit breaker and receptacle matched to
the capacity of the air conditioner.
(5) Do not extend the power cord.
(6) Perform wiring work in accordance with stand-
ards so that the air conditioner can be operated
safely and positively.
(7) Install a leakage circuit breaker in accordance with
the related laws and regulations and electric com-
pany standards.
(1) The power source capacity must be the sum of
the air conditioner current and the current of other
electrical appliances. When the current contracted
capacity is insufficient, change the contracted capacity.
(2) When the voltage is low and the air conditioner is
difficult to start, contact the power company the
voltage raised.
CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature
adjustment, timer, air flow switching, and other remote control unit
operations.
(2) Air filter removal and cleaning, and how to use the air louvers.
(3) Give the operating and installation manuals to the customer.
CAUTION
REMOTE CONTROL UNIT INSTALLATION
CAUTION
(1) Check that the indoor unit correctly receives the
signal from the remote control unit, then install
the remote control unit holder.
(2) Select the remote control unit holder selection
site by paying careful attention to the following:
Avoid places in direct sunlight.
Select a place that will not be affected by the heat
from a stove, etc.
1. REMOTE CONTROL UNIT HOLDER INSTALLATION
• Install the remote control unit with a distance of 23
ft(7 m) between the remote control unit and the photocell as the criteria. However, when installing the remote control unit, check that it operates positively.
• Install the remote control unit holder to a wall, pillar,
etc. with the tapping screw.
Remote control unit
holder fixing
Remote control
unit holder
Tapping
screw
(small)
Remote control
unit mounting
1 Set
2 Push
Remote
control unit
Page 5
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 figure.
(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 flow 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
floor.
(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.
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.
CAUTION
(1) In order to align the drain hose and drain cap, be
sure to insert securely and vertically. Incline insertion 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 fix the drain hose with tape to the bottom
of piping.
(5) Prevent drain water frozen under low tempera-
ture 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 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.
Fasten with
vinyl tape
(Wall cap)
Install the wall hook bracket horizontally and perpendicularly.
Right piping
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 connected
properly, leaking will occur.
• Attach the Insulation (Drain hose) to the drain hose.
Wall hook bracket
Lower
3-1/8”(80 mm)
hole
(Wall pipe)
(Inside) Wall (Outside)
Wall hook bracket
Tapping screw
(size: large; quantity: 8)
Bottom
piping
Indoor unit
drain hose
Wall hook
bracket
CAUTION
Bind with vinyl tape
Pipe (top)
Rear piping
Indoor unit drain hose
(bottom)
Drain cap
CAUTION
CAUTION
Drain hose
Centering marks
Lower
3/8” (10 mm)
3-1/8”(80 mm)
hole
3/16” to 3/8”(5 to 10 mm)
Leveling method
Hang weight
from here.
Weight
For left outlet piping, cut off the
piping outlet cutting groove
with a hacksaw.
Remove the drain cap by pulling
at the projection at the end of
the cap with pliers, etc.
Insulation (Drain hose)
or over
String
● 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
(Spacer)
Wall hook bracket
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 flare surface and tightening
the nut hand tight, tighten the nut to the specified 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 flare nut onto the pipe
and flare the pipe with a flaring
tool.
Insert the flare nut (always use the
flare nut attached to the indoor and
outdoor units respectively) onto the
pipe and perform the flare processing with a flare tool.
Use the special R410A flare tool,
or the conv-entional (for R22) flare
tool.
When using the conventional flare
tool, always use an allowance adjustment 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.
Check if [L] is flared uniformly
and is not cracked or scratched.
Die
A
Pipe
Alignment marks
Wall hook
bracket
Small piping
Connection piping
Indoor unit
After hooking the indoor unit to the top hook, hook the fittings of the indoor
unit to the two bottom hooks while lowering the unit and pushing it against
the wall.
Tighten with two wrenches.
Torque
wrench
Indoor unit pipe
Connection pipe
Large piping
Top hooks
(Fitting) Bottom hooks
Wrench (fixed)
Flare nut
To prevent gas leakage, coat the flare
surface with refrigerator oil.
Wall hook
bracket
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
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
A (mm)
Conventional (R22) flare 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
CAUTION
(1) Fasten a flare nut with a torque wrench as instructed in this manual. If
fastened too tight, the flare 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 firmly
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.
Page 6
PUMP DOWN OPERATION (FORCED COOLING OPERATION)
To avoid discharging refrigerant into the atmosphere at the time of relocation or disposal, recover refrigerant by doing the cooling operation
or forced cooling operation according to the following procedure. (When the cooling operation cannot start in winter, and so on, start the
forced cooling operation.)
(1) Do the air purging of the charge hose by connecting the charging hose of gauge manifold to the charging port of 3 way valve and opening the
low-pressure valve slightly.
(2) Close the valve stem of 2 way valve completely.
(3) Start the cooling operation or following forced cooling operation.
When using the remote control unit
Press the TEST RUN button after starting the cooling operation by the remote control unit.
The operation indicator lamp and timer indicator lamp will begin to flash simultaneously during test run.
When using the MANUAL AUTO button of the indoor unit (The remote control unit is lost, and so on.)
Keep on pressing the MANUAL AUTO button of the indoor unit for more than 10 seconds.
(The forced cooling operation cannot start if the MANUAL AUTO button is not kept on pressing for more than 10 seconds.)
(4) Close the valve stem of 3 way valve when the reading on the compound pressure gage becomes 0.05~0 MPa (0.5~0 kg/cm
(5) Stop the operation.
• Press the START/STOP button of the remote control unit to stop the operation.
• Press the MANUAL AUTO button when stopping the operation from indoor unit side.
(It is not necessary to press on keeping for more than 10 seconds.)
CAUTION
During the pump-down operation, make sure that the compressor is turned off before you remove the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2 way or 3 way valve open. This may cause abnormal
pressure in the refrigeration cycle that leads to breakage and even injury.
2
).
CAUTION
Install heat insulation around both the gas and liquid pipes. Failure to do so may cause water leaks.
Use heat insulation with heat resistance above 248 °F. (Reverse cycle model only)
In addition, if the humidity level at the installation location of the refrigerant piping is expected to exceed 70%, install heat insulation around the refrigerant piping. If the expected humidity level is 70-80%, use heat insulation that is 15 mm or thicker and if the
expected humidity exceeds 80%, use heat insulation that is 20 mm or thicker.
If heat insulation is used that is not as thick as specified, condensation may form on the surface of the insulation.
In addition, use heat insulation with heat conductivity of 0.045 W/(m·K) or less (at 68 °F).
Page 7
ELECTRICAL WIRING (INDOOR UNIT)
12 34
7-1/2" (190mm) 1" (25mm)
1" (25mm)
7" (175mm)
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 figure 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 harness 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.
Connection cord
lock nut
CONDUIT HOLDER
SCREW
CONDUIT
CONNECTOR
The method of adjusting inter-unit wire harness
To connect inter-unit wire harness to the terminal correctly, please
refer to the figure to adjust the length of the part of Inter-unit Wire
harness ahead from conduit holder.
14AWG
(1:1)
EARTH WIRE
Cord clamp
Screw
Connection cord
HOW TO CONNECT WIRING TO THE TERMINALS
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 termi-
nal 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 termi-
nal screw using a screwdriver.
Cord clamp
Fig. 14
A. Solid wire
Insulation
Strip 15/16" (25 mm)
Wire
Ta b
Screw
Insert the tab into the square hole of the
indoor unit and fasten with a screw.
Loop
Screw with
special washer
Round
terminal
Terminal
board
Wire
Terminal block
Square hole
B. Strand wire
Strip 3/8" (10 mm)
Screw with
special washer
Round
terminal
Round
terminal
CONDUIT HOLDER
(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 firmly to the terminal
block. Imperfect installation may cause a fire.
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.
CONDUIT CONNECTOR
Page 8
Loading...