General AWG18FA, AWG18FBAJ, AOG18FNAK, AWG18FB, AWG18FBBJ Installation Manual

...

Refrigerant

R410A

SPLIT TYPE ROOM AIR CONDITIONER

INSTALLATION INSTRUCTION SHEET

(PART NO. 9372624012)

WARNING

CAUTION

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 UNF 20 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 openings 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

Copper pipes

It is necessary to use seamless copper pipes and it is desirable that the amount of residual oil is less than 40 mg/10m. Do not use copper pipes having a collapsed, deformed or discolored portion (especially on the interior surface). Otherwise, the expansion value or capillary tube may become blocked with contaminants. As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary to choose adequate materials. Thicknesses of copper pipes used with R410A are as shown in Table1. Never use copper pipes thinner than 0.8 mm (Normal diameter is 1/4 in., 3/8 in.),

1.0 mm (Normal diameter is 5/8 in.) even when it is available on the market.

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.

This air conditioner uses new refrigerant HFC (R410A).

Contents of change

Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous mixing of other refrigerants, the diameter of each port has been changed. It is recommended the gauge with seals –0.1 to 5.3 MPa (–76 cmHg to 53 kgf/cm2) for high pressure. –0.1 to 3.8 MPa (–76 cmHg to 38 kgf/cm 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.

) for low pressure.

Table 1 Thicknesses of Annealed Copper Pipes

Thickness (mm)

Nominal

diameter (inch)

1/4 3/8 5/8

Outer diameter

(mm)

6.35

9.52

15.88

R410A [ref.] R22

0.80 0.80

1.00 1.00

INSTALLATION PROCEDURE

INDOOR UNIT INSTALLATION

The piping can be connected in the five directions indicated by 1, 2, 3, 4, and 5 in Fig. 5.

Fig. 5

5 Left

(Rear)

2 Right

piping

3 Bottom piping

1 Rear piping

1. INSTALLING THE WALL HOOK BRACKET

[Removing THE WALL HOOK BRACKET]

Remove the wall hook bracket in the following order.

• Open the screw cover and remove the two screws. (Fig. 6)

• Pull off the front cover to the front. (Fig. 7)

• Remove the tapping screws securing the wall hook bracket. (Fig. 8)

Fig. 6

Screw cover

Tapping screw

Fig. 7

Front cover

Fig. 8

Wall hook bracket

Tapping screw

piping

4 Left rear

piping

[Installation directly to a wall]

Before fastening the wall hook bracket to the wall with the screws, level it by tapping the hook at the center of bracket to the wall with the handle of a screwdriver.

• Fasten the wall hook bracket to the wall with 6 or more screws and anchor bolts through the holes near the outer edge of the bracket.

• Do not install the wall hook bracket at only one place or at an angle. For a concrete wall, embed anchor bolts (10 mm dia.) into the wall at the wall hook bracket holes (11 × 43 mm dia.). Allow the anchor bolts to stick out at least 12 mm from the wall. (Fig. 10) Install the unit to the anchor bolts with nuts through the wall hook bracket. Use 2 bolts for concrete wall and 4 bolts for blister concrete wall.

• Finally tighten the bolts and tapping screws after confirming, using the level indicator, that the clamp is horizontal.

WARNING

(1) Install the wall hook bracket so that it is correctly posi-

tioned horizontally and vertically. If the wall hook bracket is tilted, water will drip to the floor.

(2) As the weight of the indoor unit is 15 to 18 kg (33 to 40

lbs), it should be installed after properly examining the place where it is intended to be installed. If the place is not strong enough, a plank or girder should be used to make the place sufficiently strong so that the wall can support the weight.

Fig. 9

Fig. 10

Fig. 11

UNIT [mm]

65 85

Piping inlet

Wall hook bracket

Tapped

Wall hook bracket

575

470

37-∅ 6hole for tapping screw

Tapping screw (big)

264

12 mm (15/32")

Hook

155

(Handle of screwdriver)

5-∅ 12×18hole for bolt

Bolt

145

434436

WALL

575

292

Anchor bolt

Center notch

2-11×43hole

470

Piping inlet

Hook

Wall hook bracket

String

Counter weight

30 60

145

212 252

270

2. CUTTING THE HOLE IN THE WALL FOR THE CONNECTING PIPING

WARNING

If the wall pipe is not used, the cord interconnecting the indoor and outdoor units may touch metal and cause electric leakage.

(1) Cut a 100 mm diameter hole in the wall at the position shown in Fig.

12.

(2) When cutting the wall hole at the inside of the installation frame, cut

the hole to a point of intersection of center marks. When cutting the wall hole at the outside of the installation frame, cut the hole at least 10 mm below less.

(3) Cut the hole so that the outside end is lower (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.) (Fig. 12).

(6) For 5 left piping and 2 right piping, cut the hole a little lower so that

drain water will flow freely (Fig. 12).

Fig. 12

Center mark

Lower

10 mm or over

Fasten with vinyl tape

Wall cap

(Wall pipe)

(Inside) (Outside)

Wall

5 to 10 mm low

Lower

10 mm or over

100 mm dia. hole

3. ATTACH THE DRAIN HOSE

CAUTION

Insert the drain hose and drain cap into the drain port, making sure that it comes in contact with the back of the drain port, and then mount it. If the drain hose is not connected properly, leaking will occur.

• Attach the Insulation (Drain hose) to the drain hose.

Fig. 13

Insulation (Drain hose)

Drain hose

[For 1 Rear piping, 2 Right piping, 3 Bottom piping]

• Mount the drain hose to the drain port on the right side.

Fig. 14

Left side

Right side

Drain hose

Insert the drain hose until it butts against the drain port.

[For 4 Left rear piping, 5 Left piping]

• Remove the drain cap and mount to the drain port on the right side.

• Mount the drain hose to the drain port on the left side.

Fig. 15

Left side

Right side

Insert the drain cap until it butts against the drain port.

Drain cap

Insert the drain hose until it butts against the drain port.

Drain hose

4. CUT-OUT FOR PIPING ON FRONT COVER

[For 2 Right piping, 3 Bottom piping, 5 Left piping]

• Use a metal shears or other cutting tool to cut along the groove in the thin metal for the piping that will coming out of the front cover.

Fig. 16

For 2 Right piping

For 3 Bottom piping

Front cover (inside)

For 5 Left piping

5. FORMING THE DRAIN HOSE AND PIPE

CAUTION

(1) Do not remove the flare nut from the indoor unit pipe

until immediately before connecting the connection pipe.

(2) To prevent breaking of the pipe, avoid sharp bends.

Bend the pipe with a radius of curvature of 100 mm or over.

(3) If the pipe is bent repeatedly at the same place, it will

break.

[For 1 Rear piping, 2 Right piping, 3 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. 17).

• Install the piping so that the drain hose is at the bottom.

Fig. 17

Decorative tape

pipe (top)

2 Right piping

3 Bottom piping

Bind with vinyl tape

1 Rear piping

Drain hose (bottom)

CAUTION

Do not wrap the tape too tightly on drain hose. If the tape is too tight (as shown in the Figure below) the insulation effect will be lost and the moisture from condensation may accumulate.

Fig. 18 Bad Example

Vinyl Tape Too Tight

• Perform “5 ELECTRICAL WIRING” before performing this piping.

• Wrap the pipes of the indoor unit that are visible from the outside with

decorative tape.

• After passing the indoor piping and drain hose through the wall hole, hang the indoor unit on the hooks at the top of the wall hook bracket.

Fig. 19

Indoor unit

[For 4 Left rear piping, 5 Left piping]

• For 4 Left rear piping and 5 Left piping can be easily installed by removing the pipe bracket.

Removing the pipe bracket:

Remove the two tapping screws holding the pipe bracket (Fig. 20).

Fig. 20

Tapping screw

Pipe bracket

Top hooks

Wall hook bracket

• For 4 Left rear piping and 5 Left piping, preset the end of the pipe to

the dimensions shown in Fig. 21 and form the connection pipe.

• Bend the connection piping at a bend radius of at least 100 mm and position it no more than 50 mm from the wall.

Fig. 21

Connection pipe (9.52 mm dia.)

Bend (R100) with a pipe bender

• Piping work can be made easier by laying out, shaping, and temporarily fastening the connection pipe and connection cord as shown in Fig. 22 beforehand.

About 325 mm

Connection pipe (15.88 mm dia.)

About 405 mm

Fig. 22 (Left rear piping)

Indoor unit

Drain hose

Connection cord Pipe

Connect the piping

6. INSTALLING THE INDOOR UNIT

After connecting the piping, fasten the bottom of the indoor unit and the wall hook bracket with the tapping screws.

• If the unit has 4 left rear piping and 5 left piping, use the process

shown in “6 FINISHING” following for securing the indoor unit.

Fig. 23

Indoor unit

Pipe

Wall hook bracket

bracket

Tapping screw

For authorized service personnel only.

WARNING

(1) For the room air conditioner to operate satisfactorily, install it as outlined in this installation instruction sheet.

(2) Connect the indoor unit and outdoor unit with the room air conditioner piping and cords available standards parts. This

installation instruction sheet describes the correct connections using the installation set available from our standard parts.

(3) Installation work must be performed in accordance with national wiring standards by authorized personnel only.

(4) If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in contact with a flame, it

produces a toxic gas.

(5) Do not use an extension cord.

(6) Do not turn on the power until all installation work is complete.

• Be careful not to scratch the room air conditioner when handling it.

• After installation, explain correct operation to the customer, using the operating manual.

• Let the customer keep this installation instruction sheet because it is used when the air conditioner is serviced or moved.

SELECTING THE MOUNTING POSITION

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 combustible gas leakage.

(2) Do not install near heat sources.

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

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) Do not install the unit where it will be exposed to direct sunlight. (4) Install the unit where connection to the outdoor unit is easy. (5) Install the unit where the drain pipe can be easily installed. (6) Take servicing, etc. into consideration and leave the spaces shown in

Fig. 1. Also install the unit where the filter can be removed.

Fig. 1

Right side 50 mm or over

Fig. 2

Left side 50 mm or over

40 mm or over

1500 mm or over

Ceiling protrusion

40 mm or over

1500 to 2500 mm

CAUTION

If there is a section of the ceiling that protrudes, mount in a position that allows for 40 mm or over of space between the unit and the protrusion.

2. OUTDOOR UNIT

(1) If possible, do not install the unit where it will be exposed to direct

sunlight. (If necessary, install a blind that does not interfere with the air 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 disturbed

by air blowing into their windows or by noise. (5) Provide the space shown in Fig. 3 so that the air flow is not blocked.

Also for efficient operation, leave open three of the four directions

front, rear, and both sides.

Fig. 3

30 cm or over

Air

30 cm

or over 60 cm or over

60 cm or over

Fig. 4

INDOOR UNIT

OUTDOOR UNIT

CONNECTION PIPE REQUIREMENT

Table 2

MODEL

Diameter

Maximum length

Maximum Height (between indoor and outdoor)

• Use pipe with water-resistant heat insulation.

18,000 BTU class 24,000 BTU class

Small Large

6.35 mm (1/4 in.) 9.52 mm (3/8 in.)

15.88 mm (5/8 in.) 15.88 mm (5/8 in.)

20 m (66 ft) 20 m (66 ft)

8 m (26 ft) 8 m (26 ft)

ELECTRICAL REQUIREMENT

• Electric wire size and fuse capacity:

Table 3

MODEL

Power supply cord (mm

Connection cord (mm

Fuse capacity (A)

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

• Always make the air conditioner power supply a special branch circuit and provide a special breaker.

• Always use H07RN-F or equivalent as the power supply cord and the connection cord.

)

18,000 BTU class 24,000 BTU class

MAX.

MIN.

MAX.

MIN.

3.5 4.0

2.5 3.5

2.5 2.5

1.5 1.5 20 30

STANDARD ACCESSORIES

The following installation accessories are supplied. Use them as required.

INDOOR UNIT ACCESSORIES

Name and Shape

Wall hook bracket

Remote control unit

Battery (penlight)

Remote control unit holder

Drain hose

Insulation (Drain hose)

Tapping screw (big)

(ø4 × 20)

Tapping screw (small) (ø3 × 12)

OUTDOOR UNIT ACCESSORIES

Drain pipe

Drain cap

Q’ty

For indoor unit installation

Use for air conditioner operation

For remote control unit

Use as remote control unit holder

For indoor unit installation

For drain hose installation

For wall hook bracket installation

For remote control unit holder installation

For outdoor unit drain piping

work [Heat & Cool model (Reverse cycle) only]

Use

OUTDOOR UNIT INSTALLATION

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.

• 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.

• Since the drain water flows out of the outdoor unit during heating op-

eration, install the drain pipe sold separately and connect it to an commercial 16 mm hose. (Heat & Cool model (Reverse cycle) only)

CAUTION

Installation in cold regions. Do not use the accessory drain pipe. (If the drain pipe is used, the drain water in the pipe may freeze in extremely cold weather.)

Fig. 24

Bottom

Drain cap

Drain pipe mounting hole

Outdoor unit connection cord and pipe connection preparations:

Remove outdoor unit terminal cover.

Fig. 25

Air flow

603 mm

Bottom plate

Drain pipe

* After removing the screws,

remove terminal cover.

Terminal cover

343 mm

CONNECTING THE PIPING

WARNING

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.)

CAUTION

(1) 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.

(2) While welding the pipes, be sure to blow dry nitrogen

gas through them.

(3) The maximum lengths of this product are shown in ta-

ble 2. If the units are further apart than this, correct operation can not 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. When using the conventional flare tool, always use an allowance adjustment gauge and secure the A dimension shown in table 4.

Fig. 26

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

Die

Pipe

Table 4 Pipe outside diameter

Pipe outside

diameter

6.35 mm (1/4 in.)

9.52 mm (3/8 in.)

15.88 mm (5/8 in.)

Flare tool for

R410A, clutch type

0 to 0.5 0 to 0.5 0 to 0.5

A (mm)

Conventional (R22) flare tool

Clutch type Wing nut type

1.0 to 1.5 1.5 to 2.0

1.0 to 1.5 2.0 to 2.5

2. BENDING PIPES

(1) When bending the pipe, be careful not to crush it. (2) To prevent crushing of the pipe, do not bend the pipe at a radius cur-

vature of 100 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.

3. CONNECTION

(1) Install the outdoor unit wall cap (supplied with the optional installation

set or procured at the site) to the wall hole 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.

Fig. 27

Torque wrench

Indoor unit pipe

Tighten with two wrenches.

Wrench (fixed)

Flare nut

Connection pipe

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

Table 5 Flare nut tightening torque

Flare nut

6.35 mm (1/4 in.) dia.

9.52 mm (3/8 in.) dia.

15.88 mm (5/8 in.) dia.

Do not remove the cap from the connection pipe before connecting the pipe.

VACUUM PROCESS

Tightening torque

14 to 18 N · m (140 to 180 kgf · cm)

33 to 42 N · m (330 to 420 kgf · cm)

63 to 77 N · m (630 to 770 kgf · cm)

CAUTION

(1) Do not purge the air with refrigerants but use a vacuum

pump to vacuum the installation! There is no extra refrigerant in the outdoor unit for air purging!

(2) Use a vacuum pump for R410A exclusively. Using the

same vacuum pump for different refrigerants may damage the vacuum pump or the unit.

1. 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 15 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 to 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.

Table 6

Tightening torque

Blank cap (2-way valve)

Blank cap (3-way valve)

Charging port cap

Fig. 28-1

Outdoor unit

Service hose with valve core

Cap

20 to 25 N · m (200 to 250 kgf · cm)

30 to 35 N · m (300 to 350 kgf · cm)

10 to 12 N · m (100 to 120 kgf · cm)

Connecting pipe

Blank cap

Hexagon wrench

Use a 4 mm hexagon wrench.

3-way valve

Charging port

Fig. 28-2

CAUTION

Use a clean gauge manifold and charging hose for R410A exclusively.

Gauge manifold

Service hose

Vacuum pump

2. ADDITIONAL CHARGE

Refrigerant suitable for a piping length of 7.5 m is charged in the outdoor unit at the factory. When the piping is longer than 7.5 m, additional charging is necessary. For the additional amount, see the table below.

Table 7

Additional refrigerant

Cooling

model

Heat &

Cool

model

(Reverse

cycle)

Pipe length

18,000 BTU/h

class

24,000 BTU/h

class

18,000 BTU/h

class

24,000 BTU/h

class

7.5 m

(25 ft)

None

10 m

(33 ft)

50 g

(1.8 oz)

50 g

(1.8 oz)

100 g

(3.5 oz)

15 m

(49 ft)

150 g

(5.3 oz)

150 g

(5.3 oz)

300 g

(10.6 oz)

20 m

(66 ft)

250 g

(8.9 oz)

250 g

(8.9 oz)

500 g

(17.7 oz)

g/m

(oz/ft)

20 g/m

(0.71 oz/3.3 ft)

20 g/m

(0.71 oz/3.3 ft)

40 g/m

(1.41 oz/3.3 ft)

CAUTION

(1) When moving and installing the air conditioner, do not

mix gas other than the specified refrigerant (R410A) inside the refrigerant cycle.

(2) When charging the refrigerant R410A, always use an

electronic balance for refrigerant charging (to measure the refrigerant by weight).

(3) 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.

(4) Add refrigerant from the charging valve after the com-

pletion of the work.

(5) If the units are further apart than the maximum pipe

length, correct operation can not be guaranteed.

Gas

R410A

Liquid

3. GAS LEAKAGE INSPECTION

CAUTION

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

- Continued on back -

ELECTRICAL WIRING

WARNING

(1) Before starting work, check that power is not being sup-

plied to indoor unit and the outdoor unit.

(2) Match the terminal block numbers and connection cord

colors of the indoor unit and the outdoor unit. Erroneous wiring may cause burning of the electric parts.

(3) Connect the connection cords firmly to the terminal

block. Imperfect installation may cause a fire.

(4) Always fasten the outside covering of the connection

cord with the cord clamp. (If the insulator is chafed, electric leakage may occur.)

(5) Always connect the ground wire.

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 (15/16") 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 (3/8") to expose the strand wiring.

(2) Using a screwdriver, remove the terminal screw(s) on the terminal

board.

(3) Using a round terminal fastener or pliers, securely clamp a round

terminal to each stripped wire end.

(4) Position the round terminal wire, and replace and tighten the ter-

minal screw using a screwdriver.

Fig. 29

A. Solid wire

Insulation

Strip 25 mm (15/16")

Wire

Loop

Screw with special washer

Round terminal

Terminal board

Wire

Terminal block

B. Strand wire

Strip 10 mm (3/8")

Screw with special washer

Round terminal

1. CONNECTION DIAGRAM

Fig. 30

[Heat & Cool model (Reverse cycle)]

Connection cord

2(N)

1(L)

Indoor unit side terminal block

To power supply and ground

Power supply cord

2(N)

1(L)

Outdoor unit side terminal block

[Cooling model]

Connection cord

(N)

(L)

Indoor unit side terminal block

To power supply and ground

Power supply cord

(N)

(L)

Outdoor unit side terminal block

2. INDOOR UNIT SIDE

(1) Remove the service cover (Fig. 31). (2) Remove the cord clamp. (3) Connect the end of the connection cord fully into the terminal block. (4) Fasten the connection cord with a cord clamp. (5) Install the service cover with the screw.

Fig. 31

Service cover

Tapping screw

Mount to position high on the wall:

Use the table below to set the wall mounting position.

Fig. 32

Indoor unit circuit board

Fig. 33

Ceiling

Mounting height

1.5 m – 2.0 m

2.0 m – 2.5 m

Jumper wire (JM1)

Connect (primary setting)

Disconnect

[Heat & Cool model (Reverse cycle)]

Fig. 34

1(L) 2(N) 3 4 65

Earth screw

Cord clamp

Connection cord

JM1 JM2 JM3 JM4 JM5 JM6

Indoor unit

Terminal block

[Cooling model]

Fig. 35

Terminal block

1(L) 2(N) 3

Earth screw

Cord clamp

Connection cord

3. OUTDOOR UNIT SIDE

CAUTION

Use VW-1, 12 mm diameter, 0.5 to 1.0 mm thick, connection PVC tube as the insulation tube.

(1) Process the end of the connection cords to the dimensions shown in

Fig. 37.

(2) Connect the end of the connection cord fully into the terminal block

and fasten with the screws. (3) Fasten the sheath with a cord clamp. (Fig. 36) (4) Install the terminal cover. (Fig. 38)

Fig. 36

After passing the connection cord through the insulation tube, fasten it with the cord clamp.

Fig. 37

[Heat & Cool model (Reverse cycle)]

NL1

(L)2(N)

Terminal block

Power supply cord

3456

Cord clamp

Insulation tube

Connection cord

[Cooling model]

NL1

(L)2(N)

Terminal block

Power supply cord

Fig. 38

Insulation tube

Connection cord

Terminal cover

Cord clamp

Control box

FINISHING

1. CONNECTION PIPE, CORD AND DRAIN HOSE

(1) Insulate between pipes.

• For 1 Rear, 2 Right, and 3 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 4 Left rear and 5 Left piping, butt the connection pipe heat

insulation and indoor unit pipe heat insulation together and bind them with vinyl tape so that there is no gap.

Fig. 39

Connection pipe (heat insulation)

Bind the pipes together so that there is no gap.

• For 4 Left rear and 5 Left piping, wrap the area which accommodates

the rear piping housing section with cloth tape.

Fig. 40

Connection pipe

Cloth tape

• For 4 Left rear and 5 Left piping, bind the connection cord to the top

of the pipe with vinyl tape.

Fig. 41

Connection cord

Check that:

• The top and bottom hooks are hooked firmly and the indoor unit does not move to the front and rear or left and right.

• The indoor unit is accurately positioned horizontally and vertically.

• When connected from the left rear, the drain hose is at the bottom

left of the wall pipe.

Fig. 42

(For connection from the left rear)

Connection cord

Drain hose

Overlap the insulation.

Indoor unit pipe (heat insulation)

Vinyl tape

Indoor unit pipe

Wrap with cloth tape.

Pipe

Vinyl tape

(View from indoors)

Wall pipe

Connection pipe

(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.

Fig. 43

Outside wall cap

Saddle

Sealer putty

Pipe

Wall

(5) Fasten the drain hose to the outside wall, etc.

(Outdoors)

Fig. 44

Check the following:

GOOD

Drain hose

Saddle

Lifted up

BAD

BAD BAD

Wave

End in water

2. INSTALLING FRONT COVER

• Carefully attach the front cover to the diffuser on the front of the body of the indoor unit.

• Secure the lower section of the front cover with tapping screws in two locations and close the screw cover.

• Push in the following hooks from the outside: front hook, 3 locations; side hook, 2 locations; under hook, 1 location.

• The last step is to push in the hook above the blower outlet.

Fig. 45

Tapping screw

Screw cover (2 places)

Diffuser

Service cover

GOOD

Fron t cover

Side hook

BAD

Fig. 46

Front hook PUSH (3 places)

Side hook PUSH

Under hook PUSH

POWER

WARNING

(1) The rated voltage of this product is 230 V A.C.

50 Hz.

(2) Before turning on the verify that the voltage is within

the 198 V to 264 V range.

(3) Always use a special branch circuit and install a spe-

cial breaker to supply power to the room air conditioner.

(4) Use a circuit breaker matched to the capacity of the

room air conditioner. (Install in accordance with standard)

(5) The circuit breaker is installed in the permanent wir-

ing. Always use a circuit that can trip all the poles of the wiring and has an isolation distance of at least 3 mm between the contacts of each pole.

(6) Perform wiring work in accordance with standards so

that the room air conditioner can be operated safely and positively.

(7) Install a leakage circuit breaker in accordance with the

related laws and regulations and electric company standards.

CAUTION

(1) The power source capacity must be the sum of the room

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 diffi-

cult to start, contact the power company the voltage raised.

Side hook PUSH

• Perform test operation and check items 1 and 2 below.

• For the operation method, refer to the operating manual.

• The outdoor unit may not run, depending on the room temperature.

In this case, the ‘TEST RUN’ signal is received during air conditioner operation (use a metallic object to short the two metal contacts under the battery compartment lid and send the ‘TEST RUN’ signal from the remote control unit).

TEST RUNNING

Fig. 47

Short the two metal contacts under the battery compartment lid.

Operation can be checked by lighting and flashing of the display section OPERATION and TIMER lamps. Perform judgement in accordance with the following.

• Test running

When the air conditioner is run by pressing the remote control unit test run button, the OPERATION and TIMER lamps flash slowly at the same time.

• Error

The OPERATION, TIMER and SWING lamps operate as follows (Table 8) according to the error contents.

REMOTE CONTROL UNIT

INSTALLATION

CAUTION

(1) Check that the indoor unit correctly receives the sig-

nal 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 7 m between the re-

mote 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 tap-

ping screw (Fig. 48).

Fig. 48

Remote control unit mounting

Remote control unit holder

Remote control unit holder fixing

1 Set

2 Push

• Remote control unit settings

(1) Press the START/STOP button and display only the clock.

Fig. 50

(2) Press the MASTER CONTROL button continuously for more than five

seconds to display the current signal code.

Fig. 51

(3) Change the signal code with the button ( ).

Fig. 52

Explain the following to the customer in accordance with the operating manual:

(1) Starting and stopping method, operation switching, temperature ad-

justment, timer, air flow switching, and other remote control unit op-

erations. (2) Air filter removal and cleaning, and how to use the air louvers. (3) Give the operating manual and installation instruction sheet to the

customer. (4) If the signal code is changed, explain to the customer how it changed

(the system returns to signal code A when the batteries in the remote

control unit are replaced).

CUSTOMER GUIDANCE

Table 8

: Fast flashing : Slow flashing

— : Off

(RED)

2 times

3 times 3 times 6 times

Error display

TIMER SWING

(YELLOW)

(ORANGE)

Error contents

Indoor unit circuit board error Indoor unit room temperature sensor wire opened Indoor unit room temperature sensor wire short circuited Indoor unit piping sensor wire opened Indoor unit piping sensor short circuited

Indoor unit fan error

OPERATION

CHECK ITEMS

(1) INDOOR UNIT

(1) Is operation of each button on the remote control unit normal? (2) Does each lamp light normally? (3) Do not air flow direction louvers operate normally? (4) Is the drain normal? (5) Is there any abnormal noise and vibration during operation?

Tapping screw (small)

2. SWITCHING REMOTE CONTROL UNIT SIGNAL

—

CODES

• Air conditioner settings

Fig. 49

Indoor unit circuit board

Remote control unit

JM1 JM2 JM3 JM4 JM5 JM6

(4) Press the MASTER CONTROL button again to return to the clock dis-

play and change the signal code.

• Confirm the setting of the remote control unit signal code and the printed circuit board settings. If these are not confirmed, the remote control unit cannot be used to operate for the air conditioner.

Table 9

Jumper wire

JM2

Connect

Disconnect

JM3

Connect

Disconnect

Connect

Disconnect

Remote control unit

signal code

A (Primary setting)

(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?

• Do not operate the air conditioner in the test running state for a long time.

• For the operation method, refer to the operating manual and perform operation check.

PART NO. 9372624012