General ARG36F, ARG36FUAN, ARG36U, ARG36UUAN, ARG45F Installation Manual

...

Refrigerant

Drain hose

Outlet air flow

Arrange the drain hose lower than this portion

Trap

Level meter

AIR

Unit

Air Outlet Grille Air inlet Grille

(Room)

740 mm

1135

1177

270 mm

AIR

477 mm

AIR

ø225 mm

ø235 mm

R410A

Duct Type

SPLIT TYPE AIR CONDITIONER

INSTALLATION INSTRUCTION SHEET

(PART NO. 9374536047)

Indoor unit is an appliance not accessible to the general public.

For authorized service personnel only.

WARNING

CAUTION

This air conditioner uses new refrigerant HFC (R410A).

The basic installation work procedures are the same as conventional refrigerant models. However, pay careful attention to the following points:

Since the working pressure is 1.6 times higher than that of conventional refrigerant models, some of the piping and installation and service tools are special. (See the table below.) Especially, when replacing a conventional refrigerant model with a new refrigerant R410A model, always replace the conventional piping and flare nuts with the R410A piping and flare nuts.

Models that use refrigerant R410A have a different charging port thread diameter to prevent erroneous charging with conventional refrigerant and for safety. Therefore, check beforehand. [The charging port thread diameter for R410A is 1/2 UNF 20 threads per inch.]

Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with refrigerant models. Also, when storing the piping, securely seal the openings by pinching, taping, etc.

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.

When moving, if the compressor stops during pump down, close the valve immediately. (45 type only.)

This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of the user.

This mark indicates procedures which, if improperly performed, might possibly result in personal harm to the user, or damage to property.

ELECTRICAL REQUIREMENT

• Electric wire size and breaker capacity:

Power supply cord (mm

45,000 BTU/h class (3 phase TYPE)

36,000 BTU/h class (3 phase TYPE)

36,000 BTU/h class (1 phase TYPE)

• Always use H07RN-F or equivalent to the connection cord.

• Install all electrical works in accordance to the standard.

• Install the disconnect device with a contact gap of at least 3 mm in all poles nearby the units. (Both indoor unit and outdoor unit)

• Install the circuit breaker nearby the units.

4.0

6.0 4.0 30

)

MIN.MAX.

2.5

Connection cord (mm2)

MAX. MIN.

2.5 1.0

Breaker capacity (A)

SELECTING THE MOUNTING POSITION

Decide the mounting position with the customer as follows:

WARNING

Select installation locations that can properly support the weight of the indoor and outdoor units. Install the units securely so that they do not topple or fall.

CAUTION

Do not install where there is the danger of combustible gas leakage.

Do not install the unit near heat source of heat, steam, or flammable gas.

If children under 10 years old may approach the unit, take preventive measures so that they cannot reach the unit.

INDOOR UNIT

(1) Install the indoor unit on a place having a sufficient strength so that it withstand against

the weight of the indoor unit.

(2)

The inlet and outlet ports should not be obstructed; the air should be able to blow all over the room. (3) Leave the space required to service the air conditioner. (4) Install the unit where the drain pipe can be easily installed. (5)

Providing as much space as possible between the indoor unit and the ceiling will make work much easier. (6)

If installing in a place where its humidity exceeds 80%, use heat insulation to prevent condensation.

300 mm or more

Maintenance hole dimension

It shall be possible to install and remove the control box. It shall be possible to install and remove the control box, fan

units and filter.

150 mm or more

INSTALLATION PROCEDURE

Install the air conditioner as follows:

INDOOR UNIT

INSTALLATION

RECOMMENDED RANGE OF

EXTERNAL STATIC PRESSURE

30Pa~150Pa

WARNING

Install the air conditioner in a location which can withstand a load of at least five times the weight

of the main unit and which will not amplify sound or vibration. If the installation location is not strong enough, the indoor unit may fall and cause injuries.

If the job is done with the panel frame only, there is a risk that the unit will come loose. Please

take care.

CAUTION

For installation, refer to the technical data.

1. INSTALLING THE HANGERS

WARNING

When fastening the hangers, make the bolt positions uniform.

Hanging bolt installation diagram.

(Example)

(Top side)

Slide the unit in the arrow direction and fasten it.

Hanging bolt M10

(Obtained locally)

Bolt Strength 9.81 to 14.71 N·m (100 to 150 kgf·cm)

Special nut A Washer (Obtained locally)

Special nut B

Hanger

WARNING

Fasten the unit securely with special nuts A and B.

2. LEVELING

Base vertical direction leveling on the unit (right and left).

(Left side)

Base horizontal direction leveling on top of the unit.

0 – 5 mm

Give a slight tilt to the side to which the drain hose is connected. The tilt should be in the range of 0 mm to 5 mm.

Drain hose

3. INSTALLING DRAIN HOSE

Install the drain hose according to the measurements given in the following figure.

240 mm

CAUTION

Install the drain hose in accordance with the instructions in this installation instruction sheet and keep the area warm enough to prevent condensation. Problems with the piping may lead to water leaks.

NOTE: INSTALL THE DRAIN HOSE

• Install the drain hose with downward gradient (1/50 to 1/100) and so there are no rises or traps in the hose.

• Use general hard polyvinyl chloride pipe (VP25) [outside diameter 38 mm] and connect it with adhesive (polyvinyl chloride) so that there is no leakage.

• When the hose is long, install supporters.

• Do not perform air bleeding.

• Always heat insulate the indoor side of the drain hose.

Rise

Supporter

1.5 to 2 m

Air bleeding

• When the unit is shipped from the factory, the drain port is on the left side (control box side).

• When using the drain port on the right side of the unit, reinstall the drain cap to the left side drain port.

Drain port

Drain cap Nylon fastener

• Cut the drain hose insulation at a position approximately 30 mm from the end with cutters, etc.

• Stick the large drain hose insulation at the drain hose installation side.

• Stick the small drain hose insulation at the drain cap side.

450 mm

Cut line

170 mm

Drain hose insulation (large)

unit

Drain hose

Drain hose insulation (small)

Unit

30 mm

Drain cap

420 mm

170 mm

unit

0 mm

Unit

30 mm

170 mm

Drain hose insulation (large)

Drain hos

Drain hose insulation (small)

0 mm

4. INTAKE DUCT CONNECTION

Follow the procedure in the following figure to the ducts.

1015 mm

240 mm

The air inlet duct can be changed by replacing the intake grille and flange.

Special tools for R410A

Tool name

Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous mixing of

Gauge manifold

Charge hose

Vacuum pump

Gas leakage detector

other refrigerants, the diameter of each port has been changed. It is recommended the gauge with seals –0.1 to 5.3 MPa (–76 cmHg to 53 kgf/cm2) for high pressure. –0.1 to 3.8 MPa (–76 cmHg to 38 kgf/cm2) 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.

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 valve or capillary tube may become blocked with contaminants. As an air conditioner using R410A incurs pressure higher than when using conventional refrigerant, 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.

Contents of change

Thicknesses of Annealed Copper Pipes (R410A)

Pipe outside diameter

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

Thickness

0.80 mm

1.00 mm

1.20 mm

STANDARD PARTS

The following installation parts are furnished. Use them as required.

INDOOR UNIT ACCESSORIES

Name and Shape

Hanger

Special nut A (large flange)

Special nut B (small flange)

Coupler heat insulation (large)

Coupler heat insulation (small)

Q’ty Application

For suspending the indoor unit from ceiling

For suspending the indoor

unit from ceiling

For indoor side pipe joint (gas pipe)

For indoor side pipe joint

(liquid pipe)

Name and Shape Q’ty Application

Binder

Remote controller

Tapping screw (flush heads)

Remote controller cord

Drain hose insulation

(large)

(small)

For fixing the drain hose

For fixing the remote controller cord

For installing the remote controller

For connecting the remote controller

Insulates the drain hose and vinyl hose

OUTDOOR UNIT ACCESSORIES

Drain pipe

Drain cap

For outdoor unit drain

piping work [Heat & Cool model

(Reverse cycle) only]

Insulation (seal)

For filling in a gap at the entrance of connection

cords

OPTIONAL PARTS

When connecting the square duct and round duct, use the optional square flange or round flange.

Square flange Round flange

Model name : UTD–SF045T (P/N 9098180007) Model name : UTD–RF204 (P/N 9093160004)

40 mm

ø205 mm

204 mm

1065 mm

ø195 mm

85 mm

Long-life filter Remote sensor

Model name : UTD–LF25NA (P/N 9079892004) Model name : UTD–RS100 (P/N 9072619004)

External control wire set

239 mm

507 mm

Model name : UTD–ECS5A (P/N 9077359004)

CONNECTING PIPE REQUIREMENT

CAUTION

The maximum lengths of this product are shown in the following table. If the units are further apart than this, correct operation cannot be guaranteed.

45,000 BTU/h class

36,000 BTU/h class

• Use pipe with water-resistant heat insulation.

Liquid

9.52 mm (3/8 in.)

Diameter

Gas

19.05 mm (3/4 in.)

15.88 mm (5/8 in.)

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 120 °C. (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 20 °C).

Pipe length

MAX. MIN.

50 m 5 m

Maximum height

(between indoor and outdoor)

30 m

300 mm

500 mm

Maintenance hole

Control box

100 mm

300 mm

500 mm

Control box

Maintenance hole

Intake panel

1550 mm

OUTDOOR UNIT

WARNING

Install the unit where it will not be tilted by more than 3˚. However, do not install the unit with it tilted towards the side containing the compressor.

When installing the outdoor unit where it may exposed to strong wind, fasten it securely.

(1) Install the outdoor unit in a location which can withstand the weight of the unit and vibration, and which can install horizontally. (2) Provide the indicated space to ensure good airflow. (3) 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 airflow.) (4) Do not install the unit near a source of heat, steam, or flammable gas. (5) During heating operation, drain water flows from the outdoor unit.

Therefore, install the outdoor unit in a place where the drain water flow will not be obstructed. (Reverse cycle model only) (6) Do not install the unit where strong wind blows or where it is very dusty. (7) Do not install the unit where people pass. (8) Install the outdoor unit in a place where it will be free from being dirty or getting wet by rain as much as possible. (9) Install the unit where connection to the indoor unit is easy.

• When there are obstacles at the back side.

100 mm

or more

• When there are obstacles at the back, side(s), and top.

600 – 1000 mm

100 – 300 mm

250 mm or more

(Service space)

300 mm

or more

* If the space is larger than that is stated, the condition will

be the same as that there are no obstacles.

or more

• When there are obstacles at the back and front sides.

AIR

600 mm

or more

• When there are obstacles at the back side with the installation of more than one unit.

250 mm

or more

100 mm

or more

300 mm

or more

(Left side)

The distance of hanging bolts. (MAX : 550 mm, MIN : 410 mm)

is adjustable according to the place of the

CAUTION

If an intake duct is installed, take care not to damage the temperature sensor (the tempera-

ture sensor is attached to the intake port flange).

Be sure to install the air inlet grille and the air outlet grille for air circulation. The correct tem-

perature cannot be detected.

Grills must be fixed so that man cannot touch indoor unit fan, and cannot be removed by only

hand operation without tool.

Be sure to install the air filter in the air inlet. If the air filter is not installed, the heat exchanger may

be clogged and its performance may decrease.

5. OUTLET DUCT CONNECTION

Duct installation pattern ( CUT PART)

(1) Square duct

(2) Round duct outlet ×4

(This is the factory setting.)

When using as a square duct

(1) Cut the slit seam with a cutter.

(2) Turn up the insulation around the points to be cut according

to the outlet port shape working points so that the insulation does not stick out at the

Cut Cut

Cut

(3) Cut with nippers and remove the sheet metal.

part.

Cut

(Left side)

Liquid pipe

66 mm

Drain pipe ø 38 mm (O.D.)

240 mm

(Right side)

32 mm

(4) Since there is a slit in the insulation, use radio pliers, tweezers,

etc. to stretch the screw hole part used when installing the round flange and square flange when connecting the duct.

Gas pipe

Drain pipe ø 38 mm (O.D.) The drain cap is attached at the factory setting.

32 mm

114 mm

6. FRESH AIR INTAKE

(Processing before use)

(1) When taking in fresh air, cut a slit shaped cabinet in the left side

of the outer case with nippers.

Cut

Square holeCabinet (iron plate)

CAUTION

When removing the cabinet (iron plate), be careful not to damage the indoor unit internal parts

and surrounding area (outer case).

When processing the cabinet (iron plate), be careful not to injure yourself with burrs, etc.

(2) Install the round flange (option parts) to the fresh air intake.

Round duct

(3) Connect the duct to the round flange.

(4) Seal with a band and vinyl tape, etc. so that air does not leak

from the connection.

Duct

CAUTION

Always check that the drain cap is installed to the unused drain port and is fastened with the nylon fastener. If the drain cap is not installed, or is not sufficiently fastened by the nylon fastener, water may drip during the cooling operation.

OUTDOOR UNIT INSTALLATION

1. OUTDOOR UNIT PROCESSING

(1) Outdoor unit to be fastened with bolts at the four places indi-

cated by the arrows without fail.

Drain cap

Bottom side

650 mm

Drain pipe mounting place

(2) Fix securely with bolts on a solid block. (Use 4 sets of com-

mercially available M10 bolt, nut and washer.)

(3) Since the drain water flows out of the outdoor unit during

heating operation, install the drain pipe and connect it to a commercial 16 mm hose. (Reverse cycle model only)

(4) When installing the drain pipe, plug all the holes other than

the drain pipe mounting hole in the bottom of the outdoor unit with putty so there is no water leakage. (Reverse cycle model only)

CAUTION

When the outdoor temperature is 0°C 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)

Drain pipe mounting hole

mounting place

Bolt

Nut

Drain pipe

370 mm

4-ø12 mm hole

Block

Base

For the bottom air intake, follow the procedure of → for installation. (The factory setting is back air intake.)

CAUTION

When air is taken in from the bottom side, the operating sound of the product will easily enter the room. Install the product and intake grilles where the affect of the operating sound is small.

CONNECTING THE PIPE

CAUTION

Do not use mineral oil on flared part. Prevent mineral oil from getting into the system as this would reduce the lifetime of the units.

While welding the pipes, be sure to blow dry nitrogen gas through them.

The maximum lengths of this product are shown in the table. If the units are further apart than this, correct operation cannot be guaranteed.

1. 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 (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 conventional (for R22) flare tool.

Check if [L] is flared uniformly and is not cracked or scratched.

Die

Pipe outside diameter

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

Pipe outside diameter Dimension B (mm)

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

When using conventional flare tools to flare R410A pipes, the dimension A should be approximately 0.5 mm more than indicated in the table (for flaring with R410A flare tools) to achieve the specified flaring. Use a thickness gauge to measure the dimension A.

Width across flats

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

Flare tool for R410A, clutch type

Pipe outside

diameter

Pipe

Dimension A (mm)

0 to 0.5

9.1

13.2

16.6

19.7

24.0

Width across flats

of Flare nut

(Continued to the next page)

-0.4

17 mm

22 mm

26 mm

29 mm

36 mm

9374536047_B2_front 24/11/2005, 9:14 AM1

CONNECTING THE PIPE

Be sure to overlap the insulation.

Coupler heat insulation

Indoor unit side

(Gas and liquid pipes)

No gaps

SUMOTUWETH FR

DAY OFF

DELETE SET

ENERGY

SAVE

THERMO SENSOR

SET BACK

DAY

CLOCK ADJUST

ONOFF

1 2 3 4 5 6

OFF

123

SW2

Indoor unit

1 2 3 1 2 3 1 2 3

1 2 3

ONOFF

1 2 3 4 5 6

1 2 31 2 3

1 2 3

Remote controller wire

Remote controller

Indoor unit

Master unit Slave unit

Insulation (Seal)

Red

White

Power line

Black

Red White Black

Power line

2. 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.

CAUTION

To prevent breaking of the pipe, avoid sharp bends.

Bend the pipe with a radius of curvature of 150 mm or over.

If the pipe is bent repeatedly at the same place, it will break.

3. CONNECTION PIPES

Indoor unit

(1) Detach the caps and plugs from the pipes.

CAUTION

Be sure to apply the pipe against the port on the indoor unit correctly. If the centering is improper,

the flare nut cannot be tightened smoothly. If the flare nut is forced to turn, the threads will be damaged.

Do not remove the flare nut from the indoor unit pipe until immediately before connecting the connection pipe.

(2) Centering the pipe against port on the indoor unit, turn the

flare nut with your hand.

To prevent gas leakage, coat the flare surface with alkylbenzene oil (HAB). Do not use mineral oil.

When the flare nut is tightened properly by your hand, use a torque wrench to finally tighten it.

Holding spanner

Hold the torque wrench at its grip, keeping it in the right angle with the pipe , in order to tighten the flare nut correctly.

Torque wrench

Unit side

90°

CAUTION

Flare nut

6.35 mm (1/4 in.) dia.

9.52 mm (3/8 in.) dia.

12.70 mm (1/2 in.) dia.

15.88 mm (5/8 in.) dia.

19.05 mm (3/4 in.) dia.

Tightening torque

16 to 18 N·m (160 to 180 kgf·cm)

30 to 42 N·m (300 to 420 kgf·cm)

49 to 61 N·m (490 to 610 kgf·cm)

63 to 75 N·m (630 to 750 kgf·cm)

90 to 110 N·m (900 to 1100 kgf·cm)

Outdoor unit

Tighten the flare nut of the connection pipe at the outdoor unit valve connector. The tightening method is the same as that as at the indoor side.

3-way valve (liquid)

Flare nut

Connection pipe (liquid)

3-way valve (gas)

Flare nut

Connection pipe (gas)

4. VACUUM

(1) Remove the cap, and connect the gauge manifold and the

vacuum pump to the charging valve by the service hoses.

(2) Vacuum the indoor unit and the connecting pipes until the

pressure gauge indicates –0.1 MPa (–76 cmHg).

(3) When –0.1 MPa (–76 cmHg) is reached, operate the vacuum

pump for at least 60 minutes.

(4) Disconnect the service hoses and fit the cap to the charging

valve to the specified torque.

(5) Remove the blank caps, and fully open the spindles of the 2-

way and 3-way valves with a hexagon wrench [Torque: 6~7 N·m (60 to 70 kgf·cm)].

(6) Tighten the blank caps of the 2-way valve and 3-way valve to

the specified torque.

Tightening torque

6.35 mm (1/4 in.)

Blank

9.52 mm (3/8 in.)

12.70 mm (1/2 in.)

cap

15.88 mm (5/8 in.)

19.05 mm (3/4 in.)

Charging port cap

20 to 25 N·m (200 to 250 kgf·cm)

28 to 32 N·m (280 to 320 kgf·cm)

30 to 35 N·m (300 to 350 kgf·cm)

35 to 40 N·m (350 to 400 kgf·cm)

12.5 to 16 N·m (125 to 160 kgf·cm)

Connecting pipe

Blank cap

Hexagon wrench

Service hose with valve core

Cap

Gauge manifold

Service hose

3-way valve

Charging port

Vacuum pump

Use a 4 mm hexagon wrench.

CAUTION

Do not purge the air refrigerants but use a vacuum pump to vacuum the installation! There is no ex-

tra refrigerant in the outdoor unit for air purging!

Use a vacuum pump and gauge manifold and charging hose for R410A exclusively. Using the same vacuum for different refrigerants may damage the vacuum pump or the unit.

5. ADDITIONAL CHARGE

Refrigerant suitable for a piping length of 20 m is charged in the outdoor unit at the factory. When the piping is longer than 20 m, additional charging is necessary. For the additional amount, see the table below.

Pipe length

Model type

36,000 BTU/h class

45,000 BTU/h class

20 m

(66 ft)

None

30 m

(99 ft)

300g

(10.6 oz)

400g

(14.1 oz)

40 m

(132 ft)

600g

(21.2 oz)

800g

(28.2 oz)

50 m

(164 ft)

900g

(31.8 oz)

1200g

(42.3 oz)

g/m

(oz/ft)

30 g/m

(1.06 oz

/3.3 ft)

40 g/m

(1.41 oz

/3.3 ft)

CAUTION

When moving and installing the air conditioner, do not mix gas other than the specified refrigerant (R410A) inside the refrigerant cycle.

When charging the refrigerant R410A, always use an electronic balance for refrigerant charging (to measure the refrigerant by weight).

When charging the refrigerant, take into account the slight change in the composition of the gas and liquid

Gas

R410A

phases, and always charge from the liquid phase side

Liquid

whose composition is stable.

Add refrigerant from the charging valve after the completion of the work.

The maximum length of piping is 50 m. If the units are further apart than this, correct operation can not be guaranteed.

6. GAS LEAKAGE INSPECTION

CAUTION

After connecting the piping, check the all joints for gas leakage with gas leak detector.

When inspecting gas leakage, always use the vacuum pump for pressure. Do not use nitrogen gas.

7. HEAT INSULATION ON THE PIPE JOINTS (INDOOR SIDE ONLY)

CAUTION

There should be no gaps between the insulation and the product.

POWER

WARNING

[45,000 BTU/h class (3 phase TYPE) ] [36,000 BTU/h class (3 phase TYPE) ]

The rated voltage of this product is 400 V 3N ~ 50 Hz. Before turning on, verify that the voltage is within the 342 V to 457 V range.

[36,000 BTU/h class (1 phase TYPE) ]

The rated voltage of this product is 230 V ~ 50 Hz. Before turning on, verify that the voltage is within the 198 V to 264 V range.

Always use a special branch circuit and install a special receptacle to supply power to the air conditioner.

Use a special branch circuit breaker and receptacle matched to the capacity of the air conditioner. (Install in accordance with standard.)

Perform wiring work in accordance with standards so that the air conditioner can be operated safely and positively.

Install a leakage special branch circuit breaker in accordance with the related laws and regulations and electric company standards.

CAUTION

The power source capacity must be the sum of the air conditioner current and the current of other elec-

trical appliances. When the current contracted pacity is insufficient, change the contracted capacity.

When the voltage is low and the air conditioner is difficult to start, contact the power company the voltage raised.

This air conditioner must be connected to a power source that has an electrical impedance of 0.11 Ω or less or has a supply current of 100 A or greater. If the power supply does not meet the specifications, contact the power company.

ELECTRICAL WIRING

WARNING

Before starting work, check that power is not being supplied to the indoor unit and outdoor unit.

Match the terminal board numbers and connection cord colors with those of the outdoor unit. Erroneous wiring may cause burning of the electric parts.

Connect the connection cords firmly to the terminal board. Imperfect installation may cause a fire.

Always fasten the outside covering of the connection cord with the cord clamp. (If the insulator is chafed, electric leakage may occur.)

Always connect the ground wire.

ca-

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 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 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 B. Strand wire

Loop

Strip 25 mm

Wire

Insulation

Screw with special washer

Round terminal

Terminal board

Terminal block

Strip 10 mm

Wire

Round terminal

Screw with special washer

Round terminal

CAUTION

Do not bundle the remote controller cord, or wire the remote controller cord in parallel, with the indoor unit connection wire (to the outdoor unit) and the power supply cord. It may cause erroneous operation.

1. CONNECTION DIAGRAMS

[45,000 BTU/h class (3 phase TYPE) ] [36,000 BTU/h class (3 phase TYPE) ]

Remote controller

Indoor unit side terminal

[36,000 BTU/h class (1 phase TYPE) ]

Remote controller

Indoor unit side terminal

Power supply

Outdoor unit side terminal

Power supply

Outdoor unit side terminal

EARTH

(L1) (L2) (L3)

EARTH

2. CONNECTION CORD PREPARATION

Keep the earth wire longer than the other wires.

30 mm

Earth wire

40 mm or more

Power supply cord or connection cord

3. INDOOR UNIT

CAUTION

Use care not to mistake the power supply cord and connection wires when installing.

Install so that the wires for the remote controller will not come in contact with other connection wires.

If there is a risk of entering insects and small animals into the hole for cords, fill in the gap

with putty.

(1)

Remove the control box cover and install each connection wire.

Control box cover

Screw

(2) After wiring is complete, secure the remote controller cord

and connection cord with the cord clamps.

Connection cord (to outdoor unit)

Cord clamp

40 mm or more

Cord clamp

Remote controller cord

Remote controller

Connection cord

31 2

(3) Install control box cover.

Adjust the position of the screws for control box cover according to the installation.

Outdoor unit

4. OUTDOOR UNIT

CAUTION

When connecting the power supply cord, make sure that the phase of the power supply matches with the phase of the terminal board. If the phases do not match, the compressor will rotate in reverse and will not be able to compress.

(1) Service cover removal

• Remove the two mounting screws.

• Remove the service cover by pushing downwards.

Hook (3 places)

Direction of the service cover removal

Service cover

(2) Valve cover removal.

• Remove the one mounting screw.

• Remove the valve cover by sliding upward.

Hook (4 places)

(3)

Connect the power supply cord and the connection cord to terminal.

(4)

Fasten the power supply cord and connection cord with cord clamp.

[45,000 BTU/h class (3 phase TYPE) ] [36,000 BTU/h class (3 phase TYPE) ]

Power supply cord

EARTH

[36,000 BTU/h class (1 phase TYPE) ]

Power supply cord

EARTH

Connection cord (indoor unit and outdoor unit connection cord)

Indoor unit

Connection cord (indoor unit and outdoor unit connection cord)

Indoor unit

Valve cover

Control box

Terminal

Cord clamp

Connection cord

Control box

Terminal

Cord clamp

Connection cord

(5) Power supply cord and connection cord should be fixed with cable

clip as shown in the figure. Fill in a gap at the entrance of the cords with insulation (seal).

[45,000 BTU/h class ] [36,000 BTU/h class (Reverse cycle model) ]

Power supply cord and connection cord

Cable clip (2 places)

[36,000 BTU/h class (Cooling model) ]

Power supply cord and connection cord

Compressor

Cable clip

CAUTION

Do not make power supply cord and connection cord come in contact with valve (Gas).

Power supply cord and connection cord

Gap

Valve (Gas)

(6) Put the service cover and valve cover back after completion

of the work.

REMOTE CONTROLLER SETTING

CAUTION

In order to detect the room temperature correctly when using the temperature sensor of the remote controller, do not install the remote controller in a place where it will be exposed to direct sunlight or directly below the air outlet of the indoor unit.

When installing the remote controller and cord near a source of electromagnetic waves, separate the remote controller from the source of the electromagnetic waves and use shielded cord.

Do not touch the remote controller PC board and PC board parts directly with your hands.

Temperature sensor

1. INSTALLING THE REMOTE CONTROLLER

(1) Open the operation panel on the front of the remote controller,

remove the two screws indicated in the following figure, and then remove the front case of the remote controller.

Screws

When installing the remote controller, remove the connector from the front case. The wires may break if the connector is not removed and the front case hangs down. When installing the front case, connect the connector to the front case.

(2) Install the rear case to the wall, etc. with the two tapping screws.

Refer to the following information to install the remote controller wires.

Front case

Connector

Install the remote controller wires so as not to be direct touched with your hand.

Front case (back side)

Rear case

Connector

Remote controller wires

Rear case

2. ROUTING THE REMOTE CONTROLLER WIRES

(1) Install the remote controller wires to the terminals on the top of

the rear case as shown in the following figure.

(2) Fasten the wires with the binder.

(Example)

1. Red

Binder

2. White

3. Black

3. SETTING THE DIP SWITCHES

When using a battery (memory backup)

OFF

1 2 3 4 5 6

DIP Switch

Change the DIP switch setting to use batteries. (The DIP switch is not set to use batteries at the factory.) Change DIP switch No. 6 from OFF to ON. If batteries are not used, all of the settings stored in memory will be deleted if there is a power failure.

4. SETTING THE ROOM TEMPERATURE DETECTION LOCATION

The detection location of the room temperature can be selected from the following three examples. Choose the detection location that is best for the installation location.

A. Indoor unit setting (factory setting)

The room temperature is detected by the indoor unit temperature sensor.

(1)

When the THERMO SENSOR button is pressed, the lock display flashes because the function is locked at the factory.

B. Remote controller setting

The room temperature is detected by the remote controller temperature sensor.

Indoor unit

(1) Press the THERMO SENSOR button for 5 seconds or more to

unlock the function. The thermo sensor display flashes and then disappears when the function is unlocked.

(2) Press the THERMO SENSOR button.

The thermo sensor display appears.

(3) Press the THERMO SENSOR button again for 5 seconds or

more to lock the function. The thermo sensor display flashes and then remains on when the function is locked.

(4) Make sure that the function is locked.

C. Indoor unit/remote controller setting (room temperature sensor selection)

The temperature sensor of the indoor unit or the remote controller can be used to detect the room temperature.

Indoor unit

(1) Press the THERMO SENSOR button for 5 seconds or more to

unlock the function. The thermo sensor display flashes and then disappears when the function is unlocked.

(2) Press the THERMO SENSOR button to select the temperature

sensor of the indoor unit or the remote controller.

NOTES

If the function to change the temperature sensor is used as shown in examples A and B (other than example C), be sure to lock the detection location. If the function is locked, the lock display will flash when the THERMO SENSOR button is pressed.

TEST RUN

CAUTION

Supply power to the crankcase heater for at least 12 hours before the start of operation in winter.

(1) Stop the air conditioner operation. (2) Press the master control button and the fan control button si-

multaneously for 2 seconds or more to start the test run.

Test run display

(3) Press the start/stop button to stop the test run.

[SELF-DIAGNOSIS]

When the error indication “E:EE” is displayed, follow the following items to perform the self-diagnosis. “E:EE” indicates an error has occurred.

1. REMOTE CONTROLLER DISPLAY

(1) Stop the air conditioner operation. (2) Press the set temperature buttons simultaneously for 5

seconds or more to start the self-diagnosis. Refer to the following tables for the description of each error code.

Unit number (usually 0)

EX. Self-diagnosis

(3) Press the set temperature buttons simultaneously for 5

seconds or more to stop the self-diagnosis.

Error code

00 01 02

04 05

06 07

Communication error (indoor unit

Room temperature sensor open

Room temperature sensor short-circuited

Indoor heat exchanger temperature sensor open

Indoor heat exchanger temperature sensor short-circuited

Outdoor heat exchanger temperature sensor open

Outdoor heat exchanger temperature sensor short-circuited

Power source connection error

Error contents

remote controller)

outdoor unit)

Error code

08 09

Float switch operated

Outdoor temperature sensor open

Outdoor temperature sensor short-circuited

Error code Error contents

0c 0d

Discharge pipe temperature sensor or compressor temperature sensor open

Discharge pipe temperature sensor or compressor temperature sensor short-circuited

Outdoor high pressure abnormal

Discharge pipe temperature or compressor temperature abnormal

Model abnormal

11 12

Indoor fan abnormal

Outdoor signal abnormal

Outdoor EEPROM abnormal

2. OUTDOOR UNIT LEDS

Heat & Cool model (reverse cycle) only

When a malfunction occurs in the outdoor unit, the LEDs on the circuit board light to indicate the error. Refer to the following table for the description of each error according to the LEDs.

LED1 LED2 Error contents

flash

1flash

2 flash

3 flash

4 flash

5 flash

6 flash

7 flash

8 flash

9 flash

10 flash

Dislighting

When the fault is cleared, the LED lamp goes off. However, for discharge pipe temperature abnormal and high pressure abnormal, the LED lamp lights continuously for 24 hours, as long as the power is not turned off.

flash

Lighting

Model abnormal or EEPROM abnormal

Power source connection error

Discharge temp. sensor error

Heat exchanger temp. sensor error

Outdoor temp. sensor error

Communication signal error

Indoor unit error

Discharge temp. abnormal

High pressure abnormal

Compressor temp. abnormal

Compressor temp. sensor error

No error. Protect operation

LED layout

LED2

LED1

SPECIAL INSTALLATION METHODS

CAUTION

When setting the rotary switch and DIP switches, do not touch any other parts on the circuit board directly with your bare hands.

Be sure to turn off the main power.

1. GROUP CONTROL SYSTEM

A number of indoor units can be operated at the same time using a single remote controller.

(1) Wiring method (indoor unit to remote controller)

Indoor unit

No. 0

Remote controller wire

(2) Rotary switch setting (indoor unit)

Set the unit number of each indoor unit using the rotary switch on the indoor unit circuit board. The rotary switch is normally set to 0.

(3) DIP switch setting (remote controller)

Change DIP switch No. 3 on the remote controller from OFF to ON.

2. DUAL REMOTE CONTROLLERS (OPTIONAL)

Two separate remote controllers can be used to operate the indoor units.

(1) Wiring method (indoor unit to remote controller)

Indoor unit

No. 1

Remote controller

Indoor unit

SW3

Rotary Switch

Indoor unit

No. 2

Indoor unit

No. 3

Remote controller

DIP Switch

(2) DIP switch setting (remote controller)

Set the remote controller DIP switch Nos. 1 and 2 according to the following table.

Number of remote controllers

1 (Normal)

2 (Dual)

Number of remote controllers

1 (Normal)

2 (Dual)

Master unit

DIP-SW

No. 1

OFF

DIP-SW

No. 1

–

Slave unit

DIP-SW

No. 2

OFF

DIP-SW

No. 2

–

Remote

controller

DIP Switch

3. CANCELING AUTO RESTART

The auto restart function can be canceled.

(1) DIP switch setting (indoor unit)

Change the DIP switch (SW2-3) on the indoor unit circuit board from OFF to ON. The auto restart function will be canceled.

Indoor unit

DIP Switch

[DIP-SWITCH SETTING]

• Indoor unit

NO.

SW2

Switch

1 – ✽ – Remote sensor setting

DIP-

2 Edge ✽ Pulse Control input setting

3 Validity ✽ Invalidity Auto restart setting

• Remote controller

NO.

1 ✽

2 ✽

3 One unit ✽ Multiple unit

DIP-

Switch

5 Invalidity Validity ✽

6 Invalidity ✽ Validity

SW state

OFF ON

SW state

OFF ON

Heat &Cool model

(Reverse cycle model)

Cooling only model

Detail

Dual remote controller setting

Group control setting

Model setting

Auto changeover setting

Memory backup setting

✽: Factory setting

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