Fujitsu Inverter Halcyon ASU12R2 User manual

SPLIT TYPE ROOM AIR CONDITIONER
INSTALLATION MANUAL
(P/N 9314252136-02) ENGLISH
MODEL: ASU12R2/AOU12R2
ASU9R2/AOU9R2
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: 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 mainte-
nance 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.
•Connect all wiring tightly. Loose wiring may cause overheating at con-
nection 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 abnor-
mal vibration.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame. Pro-
vide 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.
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 par-
ticular 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.
( )

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 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
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 ex-
pansion value or capillary tube may become blocked with con-
taminants.
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 Table1.Never use copper pipes thinner than 0.8mm even
when it is available on the market.
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.
Table 1 Thicknesses of Annealed Copper Pipes
Thickness (mm)
Nominal
diameter
1/4
3/8
Outer diameter
(mm)
6.35
9.52
R410A
0.80
0.80
[ref.] R22
0.80
0.80
This air conditioner uses new refrigerant HFC (R410A).
Tool name
Gauge manifold
Charge hose
Vacuum pump
Gas leakage detector
CAUTION
When installing pipes shorter than 3m, sound of the outdoor unit will be transferred to the indoor unit, which will
cause large operating sound or some abnormal sound.
(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.
WARNING

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 PIPEAND 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:
Table 3
Small pipe Large pipe
Outer diameter Thickness Outer diameter Thickness
1/4”(6.35 mm) 1/32”(0.8 mm) 3/8”(9.52 mm) 1/32”(0.8 mm)
Name and Shape
Wall hook bracket
Remote
control unit
Battery (penlight)
Cloth tape
Remote control
unit holder
Tapping screw (big)
(ø4 ×20)
Tapping screw (small)
(ø3 ×12)
STANDARD ACCESSORIES
The following installation accessories are supplied. Use them as re-
quired.
INDOOR UNIT ACCESSORIES
Q’ty
1
1
2
1
1
8
2
Use
For indoor unit installation
Use for air conditioner
operation
For remote control unit
For indoor unit installation
Use as remote control unit
holder
For wall hook bracket
installation
For remote control unit
holder installation
Connection pipe assembly
Connection cord (3-conductor)
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
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.)
CAUTION
9000 BTU/h 12000 BTU/h
MINIMUM CIRCUIT AMPACITY 12 A 15 A
MAXIMUM OVERCURRENT PROTECTION
15 A 20 A
(TIME DELAY FUSE OR HACR TYPE CIRCUIT BREAKER)
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.
ADDITIONAL CHARGE
Refrigerant suitable for a piping length of 25 ft (7.5 m) is charged in
the outdoor unit at the factory.
When the piping is longer than 25 ft (7.5 m), additional charging is necessary.
For the additional amount, see the table below.
Pipe length
Additional
refrigerant
25 ft (7.5 m)
None
Table 5
33 ft (10 m)
1.8 oz (50 g)
Between 25 ft (7.5 m) and 49 ft (15 m), when using a connection pipe
other than that in the table, charge additional refrigerant with 0.7 OZ/
3.3 ft (20g/1 m) as the criteria.
49 ft (15 m)
5.3 oz (150 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 15 m. If the
units are further apart than this, correct opera-
tion can not be guaranteed.
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
Table 4
Heating Mode
About 17 to 75 °F
88 °F or less
Outdoor temperature
Indoor temperature
Cooling/Dry Mode
About 32 to 115 °F
About 64 to 90 °F
About 80% or less
About 50% or less
Indoor
Humidity
Outdoor
temperature
68°F or obove
Outdoor
temperature
below 68°F

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 (Fig. 2). 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 you 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 Fig. 2 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.
[Indoor unit piping direction]
The piping can be connected in the 6 directions indicated in (Fig. 6). When
the piping is connected in direction 2, 3, 4or 5, cut along the piping
groove in the side of the front cover with a hacksaw.
Fig. 6
(Rear)
1Rear outlet
2Right outlet
3Bottom outlet 4Left bottom
outlet
5Left
outlet
Fig. 7
[INDOOR UNIT]
[OUTDOOR UNIT]
Fig. 8
2-2/5”(6 cm) or over
Wall hook bracket
2”(5 cm)
or over
3- 3/5”(9 cm)
or over
60”(150 cm) or over (Wall cap)
Remote
control unit
Tapping screw
(small)
Remote
control
unit holder
4”(10 cm)
or over
24”(60 cm)
or over
2”(5 cm)
or over
24”(60 cm)
or over
10”(25 cm)
or over
95” (240 cm)
or over
Connection Cord
14AWG
21-1/4” (54 cm)
12-9/16” (32 cm)
Drain hose
Outdoor unit bottom
[Reverse cycle only]
2”(5 cm)
or over
Mounting Support
(Prepared On-site)
6Left rear
outlet

Indoor unit drain hose (bottom)
Pipe (top)
Bottom
piping
(1) Cut a 3-2/16’’(80 mm) diameter hole in the wall at the position shown
in (Fig.1).
(2) When cutting the wall hole at the inside of the installation
frame, cut the hole within the range of the left and right center
marks 3/8’’(10 mm) below the installation frame.
When cutting the wall hole at the outside of the installation frame,
cut the hole at least 3/8’’(10 mm) below less.
(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 leak-
age 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.)
(Fig.1)
(6) For left piping and right piping, cut the hole a little lower so that
drain water will flow freely. (Fig.1)
Fig. 1
Fasten with
vinyl tape
(Wall cap)
(Wall pipe)
(Inside) Wall (Outside)
Wall hook
bracket
Counter
weight
(1) Install the wall hook bracket so that it is correctly positioned hori-
zontally and vertically. If the wall hook bracket is titled, water will
drip to the floor.
(2) Install the wall hook bracket so that it is strong enough to with-
stand 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.
CAUTION
Install the wall hook bracket horizontally and perpen-
dicularly.
Fig. 2
Wall hook bracket
Tapping screw
Center notch
String
[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. (Fig. 3)
●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.
Fig. 3
Right piping
Bind with vinyl tape
For left outlet piping,
cut off the piping
outlet cutting groove
with a hacksaw.
Indoor unit
drain hose
Remove the drain cap
by pulling at the
projection at the end
of the cap with pliers, etc.
Drain cap
Lower
3-2/16’’(80 mm)
dia. hole
Center mark
3/8’’(10 mm)
or over
3/16’’ to 3/8’’
(5 to 10 mm)
low
3/8’’(10 mm)
or over
Lower
3-2/16’’(80 mm) dia. hole
(A 2-9/16’’(65mm)
diameter hole is
possible for the right-
hand side.)
Hook
Rear piping
2. INSTALLING THE WALL HOOK BRACKET
INDOOR UNIT
1. CUTTING THE HOLE IN THE WALL FOR THE CONNECTING PIPING
3. FORMING THE DRAIN HOSE AND PIPE
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 mate-
rial besides water. If any other material is at-
tached, it will cause deterioration and water leak-
age.
(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 bot-
tom of piping.

4. CONNECTING THE PIPING
●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 a bend radius of 2- 3/4’’(70 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.
CONNECTION
(1) Install the outdoor unit wall cap (supplied with the optional in-
stallation 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. (Tighten the flare nut of the outdoor unit
3-way valve after air purging.)
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 flaring
tool.
Check if [L] is flared uniformly
and is not cracked or scratched.
L dimension
Thin pipe 1/4” (6.35 mm)dia. ...... 1/16” (1.4 to 1.7 mm)
Thick pipe 3/8” (9.52 mm)dia. ...... 5/64” (1.8 to 2.0 mm)
Fig. 5
Tighten with two wrenches.
Torque wrench
Wrench (fixed)
Flare nut
Indoor unit pipe Connection pipe
To prevent gas leakage,
coat the flare surface
with refrigerator oil.
BENDING PIPES
The pipes are shaped by your hands. Be careful not to collapse them.
Do not bend the pipes in an angle more than 90°.
When pipes are repeatedly bent or stretched, the material will harden,
making it difficult to bend or stretch them any more. Do not bend or stretch
the pipes more than three times.
OK NO
Extend the pipe
by unwinding it.
Indoor unit
Wall hook bracket
(Spacer)
CAUTION
(1) Fasten a flare nut with a torque wrench as in-
structed 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 compres-
sor. Do not operate the compressor under the con-
dition 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.
Drain cap
Insert the drain cap and drain hose until it butts
against the drain port.
Indoor unit
drain hose
Fig. 4
Connection pipe
(1/4” (6.35 mm) dia.)
Connection pipe
(3/8’’(9.52 mm) dia.)
Align the marks.
Bend 2-3/4’’(R70)
with a pipe bender
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.
Top hooks
Indoor unit (Fitting) Bottom hooks
Wall hook
bracket
Flare nut
1/4” (6.35 mm)dia.
3/8” (9.52 mm)dia.
Tightening torque
11.57 to 13.02 ft•lbs
(160 to 180 kgf•cm)
21.70 to 30.38 ft•lbs
(300 to 420 kgf•cm)
Table 2 Flare nut tightening torque
Tightening torque standard
(using a 20 cm wrench)
Wrist strength
Arm strength

LO HI
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.)
OUTDOOR UNIT
OUTDOOR UNIT INSTALLATION
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.
●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 trou-
ble.
Connector cover removal
●Remove the two mounting screws.
Installing the connector cover
(1) After inserting the three front hooks, then insert the rear hook.
(2) Tighten the two mounting 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 ex-
posed to strong wind, fasten it securely.
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 2.17ft•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.
Fig. 9
Tapping screw
Rear hook
Connector cover
Always use the screws as shown above.
Do not select the top and bottom screws incorrectly.
Fig. 10
Flare nut
3-way valve -0.1 MPa
(-76 cmHg
-1 bar)
High
pressure
side valve
(closed)
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.
2-way valve
Gauge manifold
Compound pressure gauge
Pressure gauge
Table 6
Tightening torque
Blank cap (2-way valve) 14.47 to 18.08 ft•lbs (200 to 250 kgf•cm)
Blank cap (3-way valve) 20.25 to 23.15 ft•lbs (280 to 320 kgf•cm)
Charging port cap 9.04 to 11.57 ft•lbs (125 to 160 kgf•cm)
Low pressure
side valve
Blank cap
Charge
hose
Vacuum pump
Valve stem
Charge hose
Charging port cap
Charging port
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).
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.)

1 2 34
1 2 3L N
GG
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 run-
ning the wire from the indoor unit to the out-
door 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 over-
heat 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 connec-
tor can be bought at a hardware store. Refer to “How to connect
wiring to the terminals”for instructions on connecting depend-
ing on the wire type you are using.
•The fuse located in the outdoor unit provides power supply pro-
tection and may blow when power is applied if the system has
been incorrectly wired. (Cooling model)
G
1
G
3
2
1
2
3
115V
115V
115V
N
L
Indoor unit
Terminal
Grounding line
Control line
(Inter Unit)
Power line
DISCONNECT
SWITCH
(FIELD SUPPLY)
Outdoor unit
Terminal
POWER SUPPLY
Single-phase, 115V
Min20A (12000 BTU)
Min15A (9000 BTU)
Earth acrew
Indoor unit
terminal block
Outdoor unit
terminal block
Disconnect switch Earth acrew
Power supply line
Lock nut
Control box cover
Inter-unit wire harness
Power supply
Inter-unit wire harness
Fig. 11

(1) Match the terminal block numbers and connection
cord colors with those of the outdoor unit.
Erroneous wiring may cause burning of the elec-
tric 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) Securely earth the power cord plug.
(5) Do not use the earth screw for an external connector.
Only use for interconnection between two units.
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 fig. 20 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 wire clamper.
5. Connect inter-unit wire harness to the terminal.
Refer to the wiring diagram.
6. Use the screws to install the wire clamper.
ELECTRICAL WIRING (INDOOR UNIT)
1. Remove the screws, then remove the cord clamp.
2. Connect connection cord to the terminal.
Refer to the wiring diagram
3. Use the screws to install the cord clamp.
Connection cord
Screw
Cord clamp
(There is a
terminal block
inside.)
Connection cord
Screw
Cord clamp
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.
A. Solid wire
Strip 15/16" (25 mm)
Insulation
Loop
B. Strand wire
Strip 3/8" (10 mm)
Round
terminal
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
Fig. 14
Fig. 13
Fig. 12
WASHER
CONDUIT PLATE
CONDUIT CONNECTOR
SCREW

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 insula-
tion 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 a saddle, 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.
Fig. 16
Pipe
(Saddle)
(Outside wall cap)
(Sealer putty)
(Outdoors)
Fig. 15
Connection pipe
(heat insulation)
Bind the pipes together
to that there is no gap.
Overlap the insulation
Indoor unit pipe
(heat insulation)
Vinyl tape
Pipe
Drain hose Cloth tape
Wrap with cloth tape
Wall
Check the following: View from indoors
Left piping
Connection cord
Pipe Drain hose
GOOD
Lifted up
Saddle
Wave End in water
BAD
Drain hose
BAD BAD
For connection from the left rear
Connection cord
Drain hose
Wall pipe
Connection pipe
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.
THE FRONT PANEL REMOVAL
(1) Remove intake grille (Reference the intake grille removal.)
(2) Remove four 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 posi-
tion) is removed from wall hook bracket.
(4) The front panel bottom is pulled to the front, and bottom hooks is
removed indoor unit.
(5) The front panel is pulled to the front, raising the upper surface,
and a front panel is removed.
THE FRONT PANEL INSTALLATION
(1) Firstly, fit the lower part of the front panel, and insert top and bot-
tom hooks. (Three top sides, six bottom sides)
(2) Four screws is attached.
(3) The intake grille is attached.
Fig. 4
Top holes (two sides)
Top hole (center)
Top hook (center)
Front panel
Top hooks
(two sides)
Indoor unit
Wall hook bracket
Front panel
Push
[-] mark
Push
Front panel
Bearing
Mounting shaft
Intake grille
Intake grille
Knob
Front panel
Screws
(4 position)
Bottom hole
(six position)
Front panel
Indoor unit
Bottom hooks
(six position)

CUSTOMER GUIDANCE
WARNING
(1) The rated voltage of this product is 115 V AC 60
Hz.
(2) Before turning on the power, check if the voltage
is within the 115 V ±10 %.
(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.
CAUTION
(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 ca-
pacity.
(2) When the voltage is low and the air conditioner is
difficult to start, contact the power company the
voltage raised.
Explain the following to the customer in accordance with the operat-
ing 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.
POWER
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, (use a melallic object to short the two metal
contacts under the battery compartment lid and send the "TEST RUN" sig-
nal from the remote control unit.)
●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 OP-
ERATION indicator lamp and TIMER indicator lamp will simultaneously flash
slowly.) Short the two metal
contacts under the battery
comoartmert lid.
REMOTE CONTROL UNIT INSTALLATION
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?
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?
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 con-
trol unit, check that it operates positively.
• Install the remote control unit holder to a wall, pillar,
etc. with the tapping screw (Fig.19).
Remote control unit
holder fixing
Remote control
unit holder
Tapping
screw
(small)
Remote control
unit mounting
Remote
control unit
2 Push
1 Set
Fig. 19
Fig. 18

The method of adjusting inter-unit wire harness
To connect inter-unit wire harness to the terminal correctly, please
refer to fig. 20 to adjust the length of the part of Inter-unit Wire har-
ness ahead from conduit holder.
5-1/2" (140mm) 15/16" (25mm)
15/16" (25mm)
4-3/16" (105mm)
(1:1)
14AWG
EARTH WIRE
CONDUIT PLATE
CONDUIT CONNECTOR
Fig. 20

PUMP DOWN OPERATION
To avoid discharging refrigerant into the atmosphere at the time of relocation or disposal, recover refrigerant by doing the cooling operation
according to the following procedure.
(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.
When using the remote control unit
Press the TEST RUN button after starting the cooling operation by the remote control unit (Refer to TEST RUNNING).
The operation indicator lamp and timer indicator lamp will begin to flash simultaneously during test run.
(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/cm2).
(5) Stop the operation.
• Press the START/STOP button of the remote control unit to stop the operation.
CAUTION
During the pump-down operation, make sure that the compressor is turned off before you remove the refrig-
erant 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.