General AOH32E, ASH12EMBCW, AOH32ESAM4 Installation Manual

Refrigerant

R407C

MUlTI TYPE AIR CONDITIONER

INSTALLATION INSTRUCTION SHEET

(PART NO. 9370823011)

This air conditioner uses new refrigerant HFC (R407C).

For authorized service personnel only.

WARNING!

CAUTION!

1 For the air conditioner to operate satisfactorily, install 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 Also, do not use an extension cord.

5 Do not turn on the power until all installation work is complete.

6 Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation.

7 There is not extra refrigerant in the outdoor unit for air purging.

8 Use a vacuum pump for R407C exclusively.

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

: Use a clean gauge manifold and charging hose for R407C exclusively.

A 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.

• Be careful not to scratch the 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.

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.

WARNING

STANDARD ACCESSORIES

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

INDOOR UNIT ACCESSORIES

Name and Shape

Wall hook bracket

Wall cap-B

Remote control unit

Battery (penlight)

Remote control unit holder

Cloth tape

Tapping screw (big)

(ø4 x 20)

Tapping screw (small) (ø3 x 12)

Seal A

Q’ty

For indoor unit installation

For through hole connection pipe protection

Use for air conditioner operation

For remote control unit

Use as remote control unit holder

For indoor unit installation

For wall hook bracket installation

For remote contorol unit holder installation

For indoor unit installation

Use

INSTALLATION PROCEDURE

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

2 or 5, cut along the piping groove in the side of the indoor unit with a hacksaw. When connecting the piping in direction 3, cut a notch in the thin wall at the under cover A.

Fig. 3

2 Right

1. INSTALLING THE WALL HOOK BRACKET

Install the wall hook bracket so that it is strong enough to withstand the weight of an adult.

[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

• Check that there is no rattle at the wall hook bracket.

INDOOR UNIT INSTALLATION

(Rear)

4 Left rear

outlet

3 Bottom outlet

1 Rear outlet

CAUTION

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

through the holes near the outer edge of the bracket.

outlet

5 Left

outlet

Fig. 4

Wall hook bracket

Tapping screw (big)

Center notch

Tapped

(Handle of screwdriver)

Hook

Wall hook bracket

String

Counter weight

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 65 mm diameter hole in the wall at the position shown in

(Fig. 5).

(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 leak-

age will occur.

(5) Cut the wall pipe to match the wall thickness, stick it into the

accessory wall cap-B, fasten the cap with vinyl tape, and stick the pipe through the hole. (The connection pipe is supplied in the installation set.) (Fig. 5)

Fig. 5

Lower

10 mm or over

Fasten with vinyl tape

(Wall pipe)

(Inside) (Outside)

Wall cap-B

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

that drain water will flow freely (Fig. 5).

Wall

Center mark

Lower

10 mm or over

5 to 10 mm low

65 mm dia. hole

3. 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.

[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. 6).

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

Fig. 6

Cut off the piping outlet cutting groove with a hacksaw, etc.

Decorative tape

Right piping

Notch the thin part of under cover A.

• Perform “2 INDOOR UNIT 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 and bottom of the wall hook bracket.

Bottom piping

Bind with vinyl tape

Pipe (top)

Rear piping

Indoor unit drain hose (bottom)

Fig. 7

Indoor unit

(Fitting)

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.

Bottom hooks

Wall hook bracket

[For 4 Left rear piping, 5 Left piping]

Interchanging the drain hose

Interchange the drain cap and the drain hose.

Fig. 8

For left outlet piping, cut off the piping outlet cutting groove with a hacksaw.

Drain cap

Under cover A

Indoor unit drain hose

Remove the drain cap by pulling at the projection at the end of the cap with pliers, etc.

Removing the drain hose

CAUTION

After removing the drain hose, do not forget to install the drain cap.

Remove the under cover A and pull off the drain hose.

Fig. 9

Indoor unit

Drain cap

Indoor unit drain hose

Under cover A

See item 2. “INDOOR UNIT WIRING” for a description of how to remove the under cover A.

Drain cap

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

Top hooks

Installing the drain hose

Insert the drain hose into the drain port.

Fig. 10

Indoor unit drain hose

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

Drain port

Indoor unit drain hose

• For left piping and left rear piping, align the marks on the wall hook bracket and shape the connection pipe.

• Bend the connection piping at a bend radius of 100 mm or over and install no more than 35 mm from the wall.

Fig. 11

Connection pipe (6.35mm (1/4”) dia.)

Align the marks.

Bend (R100) with a pipe bender

• When extending the drain hose at the indoor unit, install the drain insulation.

Connection pipe

Fig. 12

Drain insulation

Indoor unit drain

Vinyl tape

Drain hose

• Place the indoor unit drain hose behind the piping.

hose

[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.

Fig. 13

Indoor unit

Spacer

SELECTING THE MOUNTING POSITION

WARNING

1 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.

2 Install the outdoor unit where it will not be tilted by more than 5°.

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

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 re-

moved.

Fig. 1

6 cm or over

Left side 5 cm or over

150 cm or over

150 to 200 cm

Right side 5 cm or over

2. OUTDOOR UNIT

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

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

(2) Install the outdoor unit in a place where it will be free from being

dirty or getting wet by rain as much as possible. (3) Install the unit when connection to the indoor unit is easy. (4) 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) (5) Do not place animals and plants in the path of the warm air. (6) Take the air conditioner weight into account and select a place

where noise and vibration are small. (7) Select a place so that the warm air and noise from the air condi-

tioner do not disturb neighbors. (8) 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

directions front, rear, and both sides. (9) Install the unit near the special branch circuit.

Fig. 2

30 cm

or over

1 cm or over

10 cm or over

60 cm

or over

OUTDOOR UNIT ACCESSORIES

Name and Shape

Tapping screw

Binder

Putty

Hexagon wrench

Cable mark

A1-A

A1-A A2-A B1-A

A1-B A2-B B1-B

A2-A B1-A B2-A B2-A B2-B B2-B

A1-B A2-B B1-B

Q’ty

• For cabinet A and cabinet D mounting (1)

• Spare (1)

For power cord and connection cords binding

For sealing

For opening the refrigerant valve on the outdoor unit

Stick on both ends of connection cord (to prevent incorrect wiring)

Use

This installation instruction sheet refers to following installation parts.

Name Q’ty

Connection pipe assembly 4 Connection cord (3-conductor + Earth) 4 Wall pipe 4 Decorative tape 4 Vinyl tape 4 Wall cap 4 Saddle 4 sets Drain hose 4 Tapping screws 4 sets Sealant 4 Power supply cord 1

ELECTRICAL REQUIREMENT

••

• Electric wire size and fuse capacity:

••

Table 1

Power supply cord (mm2)

Connection cord (mm2)

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

• Install the disconnect device with a contact gap of at least 3 mm

nearby the units. (Both indoor unit and outdoor unit.)

AIways make the air conditioner power supply a special branch circuit and provide a special switch and receptacle. Do not extend the power cord.

MAX

MIN

MAX

MIN

5.0

3.5

1.0

INDOOR UNIT WIRING

WARNING

1 Before starting work, check that power is not being

supplied to the outdoor unit.

2 Match the terminal block numbers and connection cord

colors with those of 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.

(1) Remove the front panel. (Remove the front panel in accordance

with “C FRONT PANEL REMOVAL” of these instructions.)

(2) Remove the under cover A.

Removing the under cover A

Fig. 14

Right bottom of indoor unit

Pull

Cord clamp (There is a terminal block inside.)

Under cover A

(3) Remove the cord clamp. (4) Bend the end of the connection cord as shown in the figure. (5) Connect the end of the connection cord fully into the terminal

block.

Fig. 15

Earth screw

Connection cord (Equivalent to H07RN-F 1.0 mm

3.5 mm

)

100 m

12 mm

18 m

Be sure that the cord is not applied inside the hatched lines.

35 mm

6) Fasten the connection cord with a cord clamp.

Fig. 16

Fasten the connection cord with the position shown in the figure as reference.

Terminal block

Reference

Sheath

Fig. 17

Fasten the outside covering of the connection cord with cord clamp.

Connection cord

Insert the tab into the square hole of the indoor unit and fasten with a screw.

(Tab)

Cord clamp

Installing the under cover A

• Fit the hooks of the under cover A to the indoor unit.

Fig. 18

Indoor unit

(Hook)

Indoor unit terminal block

Screw

Wall hook bracket

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.

OUTDOOR UNIT PROCESSING

When the outdoor unit will be exposed to strong wind, fasten it with bolts at the places indicated by the arrows (Fig. 19).

Fig. 19

Bottom

15-3/4” (400 mm)

25-19/32” (650 mm)

4-ø12 hole (Anchor bolt M10)

60 cm or over

Under cover A(Hook)

• After installing the bottom hook install the side hooks by pressing the bottom right end of under cover A from the bottom.

- Continuted on back -

CONNECTING THE PIPING

CAUTION

The maximum lengths of this product are shown in Table 1. If the units are further apart than this, correct operation can not be guaranteed.

1. LIMITATION OF REFRIGERANT PIPING LENGTH

Table 2

Total max length (A1+A2)

Total max length (B1+B2)

Max length for each indoor unit (A1 or A2 or B1 or B2)

Max height difference (H)

Fig. 20

OUTDOOR UNIT

30 m (98 ft)

25 m (82 ft)

10 m (33 ft)

INDOOR UNIT

2. FLARING

(1) Cut the connection pipe to the necessary length with a pipe cut-

ter.

(2) Hold the pipe downward so that cuttings will not enter the pipe

and remove the burrs.

(3) Insert the flare nut onto the pipe and flare the pipe with a flaring

tool.

Fig. 21

Check if [L] is flared uniformly and is not cracked or scratched. L dimension Thin pipe (6.35 mm dia.) 1.4 to 1.7 mm

Thick pipe (9.52 mm dia.) 1.8 to 2.0 mm Thick pipe (12.7 mm dia.) 1.9 to 2.2 mm

3. BENDING

(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

curvarture of 100 mm or more.

(3) If the copper pipe is bent or pulled to often, it will become stiff. Do

not bend the pipe more than three times at one place.

4. CONNECTION

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

stallation 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. (Tighten the flare nut of the outdoor unit 3-

way valve after air purging.)

Fig. 22

Tighten with two wrenches.

Wrench (fixed)

Torque wrench

Indoor unit pipe

Flare nut

Connection pipe

Fig. 23

OUTDOOR UNIT

Connection pipe

Flare nut

Torque wrench

Fig. 24

To prevent gas leakage, coat the flare surface with refrigerator oil.

Table 3 Flare nut tightening torque

Flare nut

6.35 mm

(1/4”) dia.

9.52 mm

(3/8”) dia.

12.7 mm

(1/2”) dia.

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

Tightening torque

15.7 to 17.6 N·m

(160 to 180 kgf·cm)

29.4 to 34.3 N·m

(300 to 350 kgf·cm)

49.0 to 53.9 N·m

(500 to 550 kgf·cm)

Tightening torque standard

(using a 20 cm wrench)

Wirst strength

Arm strength

OUTDOOR UNIT WIRING

WARNING

1 Before starting work, check that power is not being

supplied to the outdoor unit.

2 Match the terminal block numbers and connection cord

colors with those of the indoor unit side. 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 cord clamps. (If the insulator is clamped, electric leakage may occur.)

5 Always connect the ground wire.

CAUTION

Use H07RN-F or equivalent as the connection cord (1.5

to 2.0 mm2) and power cord (3.5 mm2 to 5.0 mm2).

(1) Remove the outdoor unit cabinet A and cabinet D.

Fig. 26

* Use the accessory screws at these points only

* After removing the screws, remove

cabinet A by pushing it down

Cabinet A mounting direction

Cabinet D

(2) Process the end of the connection cords to the dimensions shown

in (Fig. 28) and bend the end of each cord as shown in (Fig. 27).

Fig. 27

(3) Connect the end of the power cord and connection cord fully

(4) Fasten the sheath with a cord clamp. (5) Fasten the power cord and connection cord with cable clips and

Stripped length

12 to 13 mm

into the terminal block.

binders as shown in (Fig. 28).

Fig. 28

[Reverse cycle model]

Terminal block

B1UN B2UNA1UN A2UN

Cord clamp

Binder

(Insulator)

(Sheath)

Power cord

20 mm

Connection cord

20 mm

(Insulator)

(Sheath)

Fig. 29

Indoor and outdoor wire connection

OUTDOOR UNIT INDOOR UNIT

1 2

Power cord

220-240V 50 Hz · 1ø

EARTH

(6) Pass the connection cord and power cord through the hole of

L N

POWER

the 3-way valve bracket and run them to the outside of the cabinet.

1 2

Connection cord

1 2 3

Fig. 30

±10

Outdoor unit

• 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, press the test run button at the back of the remote control unit while the room air conditioner is running. (With the transmit section of the remote control unit facing the body, press the TEST RUN button with the tip of a ball point pen.)

Fig. 38

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. To end test operation, press the remote control unit START/STOP button.

• Error

The OPERATION, TIMER and SWING lamps operate as follows (Table 5 and 6) according to the error contents.

INDOOR UNIT

Indoor unit circuit board error Indoor unit room temperature sensor wire error Indoor unit piping sensor wire error

Indoor unit fan error

Connection cord

Connection pipe

: Fast flashing : Slow flashing — :Off

OUTDOOR UNIT

Hole (3-way valve bracket)

Power cord and connection cord (indoor unit and outdoor unit connection wire)

THERMISTOR DISCHARGE PIPE abnormal

• Above PCB:UNIT A, below PCB:UNIT B.

TEST RUNNING

Remote control unit (rear)

TIME ADJUST button

Table 5

Error contents

Table 6

Error contents

TEST RUN button

Error display

OPERATION

(RED)

2 times

3 times 6 times

LED D18 blinking display

0.1 sec ON/0.1 sec OFF

TIMER SWING

(GREEN)

Error display (PCB)

(ORANGE)

—

— —

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?

(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.

Explain the following to the customer in accordance with the operating manual: (1) Starting and stopping method, operation switching, temperature

adjustment, timer, air flow switching, and other remote control

unit operations. (2) Air filter removal and cleaning, and how to use the air louvers. (3) Give the operating and installation instruction sheets to the customer.

CUSTOMER GUIDANCE

VACUUM PROCESS AND

ADDITIONAL CHARGE

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 R407C 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 pres-

sure gauge indicates -76 cmHg.

(3) When -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 port

(Tightening torque : 8.8 to 11.8 N·m (90 to 120 kgf·cm)).

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

3-way valves with a hexagon wrench (Torque: 4.9 to 6.9 N·m (50 to 70 kgf·cm)).

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

specified torque:

2-way valves torque: 19.6 to 24.5 N·m (200 to 250 kgf·cm) 3-way valves (9.52 dia.) torque: 19.6 to 24.5 N·m (200 to 250 kgf·cm) 3-way valves (12.7 dia.) torque: 31.4 to 37.2 N·m (320 to 380 kgf·cm)

Fig. 25

Connecting pipe

OUTDOOR UNIT

Service hose with valve core

Cap

OUTDOOR UNIT

2-way valve

3-way valve

Gauge manifold

3-way valve

Blank cap

Charging port

Connection pipe

2. ADDITIONAL CHARGE

Refrigerant suitable for a piping length of 20 m (A1+A2 or B1+B2) is charged in the outdoor unit at the factory. When the piping is longer than 20 m (A1+A2 or B1+B2), additional charging is necessary. For the additional amount, see the table below.

Table 4

Total pipe length A1+A2 or B1+B2

Additional refrigerant

(R407C)

1 When moving and installing the air conditioner, do not

mix gas other than the specified refrigerant R407C inside the refrigerant cycle.

2 When charging the refrigerant R407C, 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 The maximum length of the piping is 30 m (A1+A2 or

B1+B2). If the units are further apart than this, correct operation can not be guaranteed.

66 ft

(20 m)

None

CAUTION

82 ft

(25 m)

3.5 oz

(100 g)

98 ft

(30 m)

7.1 oz (200 g)

Gas

Liquid

oz/ft

( g/m)

0.71 oz/3.3 ft (20 g/m)

R407C

6 9 10

GAS LEAKAGE INSPECTION

CAUTION

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

(1) Insulate between pipes.

• For rear, right, and bottom piping, overlap the connection pipe heat insulation and indoor unit pipe heat insulation and bind them with vinyl tape so that there is no gap.

• For left and left rear piping, butt the connection pipe heat insulation and indoor unit pipe heat insulation together and bind them with and vinyl tape so that there is no gap.

Fig. 31

Connection pipe (heat insulation)

• For left and left rear piping, wrap the area which accommodates the rear piping housing section with cloth tape.

Indoor unit pipe (heat insulation)

FINISHING

Vinyl tape

Seal A

Butt connection pipe (heat insulation) against the indoor unit pipe (heat insulation) and wrap with seal A so that there is no gap.

Seal A

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. 35

(For connection from the left rear)

(View from indoors)

Wall pipe

Connection pipe

Drain hose

(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. 36

Saddle

Connection cord

Outside wall cap

Sealer putty

1 The rated voltage of this product is 220-240 V A.C. 50 Hz.

2 Before turning on the verify that the voltage is within

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

4 Use a circuit breaker and receptacle matched to the

5 Do not extend the power cord.

6 Perform wiring work in accordance with standards so

7 Install a leakage circuit breaker in accordance with the

Fig. 32

RECHARGING THE

Connection pipe

Cloth tape

Indoor unit pipe

Pipe

Wrap with cloth tape.

Wall

(Outdoors)

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

REFRIGERANT

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

Fig. 37

Check the following:

GOOD BAD BAD

Drain hose

Saddle

Lifted up

Wave

2 When the voltage is low and the air conditioner is diffi-

BAD

End in water

(1) Vacuum the outdoor unit, indoor unit and the connecting pipes until

the pressure gauge indicates -76 cmHg.

(2) After the vacuuming is finished, charge with the amount of refrig-

erant written on the rating plate.

• 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 charging the refrigerant R407C, always use an electronic balance for refrigerant charging (to measure the refrigerant by weight).

Gas

R407CR407C

Liquid

• For left and left rear piping, bind the connection cord to the top of the pipe with vinyl tape.

Fig. 33

Connection cord

Pipe

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.

Fig. 34

POWER

WARNING

the 198 V to 264 V range.

cial receptacle to supply power to the room air conditioner.

capacity of the room air conditioner. (Fuse rating: 30 A) When connecting the power supply to the outdoor unit, always install a circuit breaker between the outdoor unit and the power supply. Use the circuit breaker has an isolation distance of at least 3 mm between the contacts of each pole.

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

related laws and regulations and electric company standards.

CAUTION

air conditioner current and the current of other electrical appliances. When the current contracted capacity is insufficient, change the contracted capacity.

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

••

• breaker

••

FRONT PANEL REMOVAL

CAUTION

Install the front panel and intake grille securely. If installation is imperfect, the front panel or intake grille may fall off and cause injury.

1. INTAKE GRILLE REMOVAL

(1) Open the intake grille. (2) Open the intake grille and lift the intake grille upward until the

hook at the top of the intake grille is unhooked.

Fig. 39

(Hook)

Intake grille

Open (Hook)

Lift

2. FRONT PANEL REMOVAL

(1) Remove the two tapping screws. (2) Remove the front panel by lifting the bottom of the front panel

upward.

Fig. 40

Front panel

Lift

Tapping screw

3. FRONT PANEL INSTALLATION

(1) Hook the top hole of the front panel to the hook of the base. (2) Fasten the front panel with the screw.

Fig. 41

(Top hook)

(Top hole)

REMOTE CONTROL UNIT

HOLDER 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.

Install the remote control unit holder to a wall or pillar with the tapping screws.

Fig. 42

Remote control unit mounting

Remote control unit holder

Tapping screw (small)

Remote control unit holder fixing

1 Set

2 Push

Remote control unit

Service hose

Vacuum pump

Pipe

Drain hose

Wrap with cloth tape

Cloth tape

Pipe

Connection cord

Left piping

Front panel

Drain hose

Be sure that the top hole of the front panel is hooked securely to the hook of the base.

PART NO. 9370823014