Fuji Electric 9365388044 Installation Instructions Manual

OUTDOOR UNIT ACCESSORIES

SPLIT TYPE AIR CONDITIONER

INSTALLATION INSTRUCTION
SHEET

(PART NO. 9365388044)

WARNING

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

CAUTION

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).

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 con-

ventional 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

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/10 m. 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
R22, it is necessary to choose adequate materials.
Thicknesses of copper pipes used with R410A are as shown in Table 1. Never
use copper pipes thinner than 0.8 mm (Nominal diameter is 3/8 in.), 1.0 mm
(Nominal diameter is 5/8 in.) even when it is available on the market.

For authorized service personnel only.

WARNING

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

2 Connect the indoor unit and outdoor unit with the air conditioner piping and cords available standards parts. This installa-

tion 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 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

- Continued on back -

Refrigerant

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

2

) 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.

Tool name

Gauge manifold

Charge hose

Vacuum pump

Gas leakage detector

For outdoor unit drain piping
work
[Heat & Cool model
(Reverse cycle) only]

1

1

Drain pipe

Drain cap

Cassette Type

Table 1 Thicknesses of Annealed Copper Pipes

Nominal

diameter (inch)

3/8
5/8

Thickness (mm)

R410A [ref.] R22

0.80 0.80

1.00 1.00

Outer diameter

(mm)

9.52

15.88

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.

Pipe

Pipe

Especially, the installation place is very important for the split type air
conditioner because it is very difficult to move from place to place after the
first installation.
Decide the mounting position together with the customer as follows:
The discharge direction can be selected as shown below.

Fig. 1

CAUTION

Since 2-way outlet as shown below causes performance
problems, do not set it.

(4 directions)

(3 directions)

100 mm (4”) or more

Piping position

(2

directions

)

100 mm (4”) or more

100 mm (4”) or more

(2

directions

)

1,000 mm (39”) or more

INDOOR UNIT

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

withstands against the weight of the indoor unit.

(2) The inlet and outlet ports should not be obstr ucted; the air should be

able to blow all over the room.
(3) Leave the space required to service the air conditioner (Fig. 2).
(4) The ceiling rear height as shown in Fig. 3.
(5) A place from where the air can be distributed evenly throughout the

room by the unit.
(6) A place from where drainage can be extracted outdoors easily.
(7) Install the unit where noise and vibrations are not amplified.

Fig. 2

This mechanism enables the cassette body to move 35 mm down­ward and realizes installation to the space of 200 mm. No special
works and option is needed.

Fig. 3

You can select 2-way setting

Obstruction

Strong and durable ceiling

2,300 mm (91”)

or more

1,000 mm (39”)
or more

1,000 mm (39”)

or more

Floor

(B) Slender setting(A) Standard setting

200 mm (7-7/8”)

or more

235 mm (9-1/4”)

or more

OUTDOOR UNIT

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.

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

light. (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.
(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 conditioner

do not disturb neighbors.
(8) Provide the space shown in Fig. 4 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) Do not set the unit directly on the ground because it will cause trou-

ble.
(10) Set the unit on a strong stand, such as one made of concrete blocks

to minimize shock and vibration.

Fig. 4

Air

30 cm (1’) or over

30 cm (1’)
or over

30 cm (1’)
or over

60 cm (2’) or over

60 cm (2’)
or over

STANDARD PARTS

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

INDOOR UNIT ACCESSORIES

Name and Shape

Coupler heat insulation

Special nut A (large flange)

Special nut B (small flange)

Template

Blower cover insulation

Hook wire

Binder (small)

Remote
controller

Tapping screw
(flush heads)

Remote controller cord

Q’ty

2

4

4

1

2

2

Application

For indoor side pipe joint

For installing indoor unit

For installing indoor unit

For ceiling hole cutting

For discharged air

For installing intake grille.

For fixing the remote
controller cord

For installing the remote
controller

For connecting the remote
controller

1

1

2

1

1

INSTALLATION PROCEDURE

Install the air conditioner as follows:

INDOOR UNIT INSTALLATION

WARNING

● Install the air conditioner in a location which can with­stand a load do 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.

REMOVING THE INTAKE GRILLE

(1)Push the intake grille pushbuttons (two places).
(2)Open the intake grille.

Fig. 5

OPEN

PUSH

(3)Remove the grille hinge wire.

Fig. 6

A

• Pull up while pressing the B section (Fig. 7).

Fig. 7 Part A detail view Fig. 8 Part A section view

B

(4)Remove the intake grille.

REMOVING THE PANEL FRAME

• Pull up the cor ner sections (A) of the panel frame as shown in
Fig. 9 (4 locations).

Fig. 9 Part A detail view

Grille hinge wire

A

A

A

A

B

• Pull up in the direction of the arrow while holding down the C
section of Fig. 10 (4 locations).

Fig. 10 Part B detail view

Panel base

Fig. 11

C

Panel frame

CAUTION

Always remove the panel frame after removing the intake
grille.

1. POSITION THE CEILING HOLE AND HANGING
BOLTS

Fig. 12

940 mm ( 37”)

890 mm ( 35-3/64”)

750 mm (29-17/32”)

750 mm (29-17/32”)

Hanging bolt M10

Fig. 14

(A) Standard setting

Hole-in anchor
Hole-in plug

Concrete Insert

Drain pipe (I.D. 32 mm)

60 mm

(2-3/8”)

305.5 mm (12”)

298.5 mm (11-3/4”)

(2-3/4”)

248.5 mm
(9-25/32”)

70 mm

(3-15/16”)

(5”)

100 mm

235 mm (9-1/4”)

127 mm

(B) Slender setting

Drain pipe (I.D. 32 mm)

60 mm

(2-3/8”)

305.5 mm (12”)

11-3/4” (298.5 mm)

248.5 mm
(9-25/32”)

70 mm

(2-3/4”)

(3-15/16”)

(3-5/8”)

100 mm

92 mm

200 mm (7-7/8”)

3. BODY INSTALLATION

[The ceiling rear height is 235 mm (9-1/4") or more.] [Standard setting]

[The ceiling rear height is 200 mm (7-7/8") or more.] [Slender setting]
(1) Install special nut A, then special nut B onto the hanging bolt (Fig. 15).
(2) Raise the body and mount its hooks onto the hanging bolt between

the special nuts (Fig. 15).
(3) Turn special nut B to adjust the height of the body (Fig. 15).
(4) Leveling

Using a level, or vinyl hose filled with water, fine adjust so that the

body is level.

WARNING

Perform final tightening by tightening the double nut firmly.

Fig. 15

*Must fit tightly against ceiling

without any gap.

Special nut B

Hanging bolt

Special nut A

30 mm or
more

Hook

Ceiling

After installing the body,
tighten the nuts.

Fig. 16

* Allowable space between the unit and the ceiling 5 mm or less

INSTALLING THE PANEL FRAME

Fig. 17

Vinyl hose

* With slender setting, turn the panel frame 90° as shown in the dia-

gram above.

Grille setting method has been changed at the marked posi­tions on the panel frame and panel base.

Fig. 18

(A) Standard setting (B) Slender setting

Fig. 19
(Example)

Panel base

Panel frame

*90° Turn

Mark

Panel frame

No mark

2. HANGING PREPARATIONS

• Firmly fasten the hanging bolts as shown in Fig. 13 or by another method.

• Install the hanging bolts at a place where they would be capable of

holding a weight of at least 50 kgf per bolt.

Fig. 13

2

INSTALLING DRAIN PIPE

CAUTION

Install the drain pipe 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 pipe.

••

••

• Install the drain pipe with downward gradient (1/50 to 1/100) and so

there are no rises or traps in the pipe.

••

••

• Use general hard polyvinyl chloride pipe (VP25) [outside diameter

32 mm (1-1/4”)] and connect it with adhesive (polyvinyl chloride) so
that there is no leakage.

••

••

• When the pipe is long, install supporters.

••

••

• Do not perform air bleeding.

••

••

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

••

••

• When desiring a high drain pipe height, raise it up to 800 mm (31”) or

less from the ceiling within a range of 150 mm (6”) from the body. A
rise dimension over this range will cause leakage.

Fig. 20

Max. 800 mm (31”)

Rise

Trap

Supporter

1.5 to 2.0 m (5 to 6.5 ft)

Air bleeding

150 mm (6”) or less

3

OUTDOOR UNIT INSTALLATION

1. OUTDOOR UNIT PROCESSING

When the outdoor unit will be exposed to strong wind, fasten it with bolts
at the four places indicated by the arrows (Fig. 21).

Fig. 21

Drain pipe

2. OUTDOOR UNIT CONNECTION CORD AND
PIPE CONNECTION PREPARATIONS

(1) Remove outdoor unit terminal cover.

Fig. 22

(2) Connect the piping, connection cord and power supply cord.

CAUTION

If this product is used in an area where the temperature
falls below freezing for long periods of time, do not con­nect the drain pipe. Instead, allow the water to drain into a
drain pan.

Bottom

Drain pipe mounting hole

Drain cap

Air flow

Drain pipe mounting hole

Bottom plate

Terminal cover

CONNECTION PIPE REQUIREMENT

Table 2

Diameter

Large

15.88 mm (5/8”)

Maximum

length

25 m (82 ft)

Maximum Height
(between indoor

and outdoor)

15 m (50 ft)

Small

9.52 mm (3/8”)

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).

ELECTRICAL REQUIREMENT

••

••

• Electric wire size and fuse/breaker capacity:

Table 3

••

••

• 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).

••

••

• Use pipe with water-resistant heat insulation.

Power supply cord (mm2)

Connection cord (mm2)

Fuse/Breaker capacity (A)

MAX.

MIN.

MAX.

MIN.

4.0

3.5

2.5

1.5

30

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. 23

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.

4

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

Die

A

Pipe

Table 4 Pipe outside diameter

Pipe outside

diameter

9.52 mm (3/8 in.)

15.88 mm (5/8 in.)

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

Flare tool for

R410A, clutch type

0 to 0.5
0 to 0.5

L

Extend the pipe
by unwinding it.

Cut line

Pipe

Heat insulating pipe

Cutter

2. BENDING PIPES

The pipes are shaped by your hands. Be careful not to collapse them.

Fig. 24

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.

When bending the pipe, do not bend it as is. The pipe will be collapsed. In
this case, cut the heat insulating pipe with a sharp cutter as shown in Fig.
25, and bend it after exposing the pipe. After bending the pipe as you
want, be sure to put the heat insulating pipe back on the pipe, and secure
it with tape.

Fig. 25

CAUTION

1 To prevent breaking of the pipe, avoid sharp bends.

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

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

break.

3. CONNECTION PIPES

(1) Indoor unit side

Fig. 26

CAUTION

1 Be sure to apply the pipe against the port on the in-

door 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.

2 Do not remove the flare nut from the indoor unit pipe

until immediately before connecting the connection
pipe.

Indoor unit

Small pipe

Large pipe

Holding spanner

Body side

Torque wrench

CAUTION

Hold the torque wrench at its grip, keeping it in the right
angle with the pipe as shown in Fig. 27, in order to tighten
the flare nut correctly.

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

Table 5 Flare nut tightening torque

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

CAUTION

Be sure to connect the large pipe after connecting the small
pipe completely.

(2) Outdoor unit side

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.

Fig. 28

Flare nut

9.52 mm (3/8 in.) dia.

15.88 mm (5/8 in.) dia.

Tightening torque

33 to 42 N·m (330 to 420 kgf·cm)

63 to 77 N·m (630 to 770 kgf·cm)

(Large pipe)

(Small pipe)

Connection pipe

Flare nut

3-Way valve

2-Way valve

When the flare nut is tightened properly by your hand, hold the body
side coupling with a separate spanner, then tighten with a torque wrench
(Fig. 27).

Fig. 27

(Hanging bolt position)

(Grille measurement)

(Hanging bolt position)

(Ceiling opening measurement)

* Appearance of slender setting

603 mm

343 mm

*After removing the screws,

remove terminal cover.

7

GRILLE INSTALLATION

BLOWER COVER INSULATION

Install the blower cover insulation only when the outlet direction is not
specified.
Two blower cover insulations are packed with the indoor unit.
Install the blower cover insulation at the diffuser position shown in Fig. 38.
At this time, use the piping position as the criteria.

Fig. 38

A-A Section view

A

A

INSTALLING THE INTAKE GRILLE

(1)Mount the grille hinge wire to the hook shaft as shown in Fig. 39.

Fig. 39

A

• Latch the grille hinge wire to the hook shaft, and fasten.

Fig. 40 Part A detail view Fig. 41 Part A section view

Grille hinge
wire

(2)Install the hook wire.

• Pass the hook wire through the panel base from the rear side as
shown in Fig. 42, and fasten to the reinforced metal fitting of the
intake grille using a screw.

Fig. 42

Screw

Fig. 43 Section view

2 direction example

(Piping direction)

Blower cover
insulation

Panel
base

Drain
pan

Hook shaft

Hook wire

RFM (grille)

(3)Loosen the screw, put the loop of the hook wire over it, and tighten

the screw again.

CAUTION

Install the intake grille hook wire to the grille assem­bly. If it falls, it may cause injuries.

(4)Bring up the intake grille by pushing it up at an angle as shown in

Figs. 44, 45, and fasten.

Fig. 44

Fig. 45

Hook wire

(1) Remove the control box cover and cover (wire) B and install the con-

nection cord.

Fig. 33

Remote controller cord

Terminal board
(Indoor unit)

Ceiling height

(m)

Normal

High ceiling 1

High ceiling 2

Low ceiling

1

–

–

–

–

2.5 - 3.0

3.0 - 3.5

More than 3.5

Less than 2.5

2

OFF

ON

OFF

ON

3

OFF

OFF

ON

ON

DIP-SW4

Gas

Liquid

5

VACUUM PROCESS

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

Fig. 29

Connecting pipe

Blank cap

Hexagon wrench

3-way valve

Charging port

Cap

Service hose
with valve core

Outdoor unit

CAUTION

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

t

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

Between 7.5 m and 25 m, when using a connection pipe other than that
in the table, charge additional refrigerant with 40 g (1.4 oz)/1 m (3.3 ft)
(Reverse cycle model), 20 g (0.71 oz)/1 m (3.3 ft) (Cooling model) as the
criteria.

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 LEAKAGE INSPECTION

CAUTION

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

Blank cap (2-way valve)

Blank cap (3-way valve)

Charging port cap

Tightening torque

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)

Use a 4 mm
hexagon wrench.

Gauge manifold

Vacuum pump

Service hose

R410A

Cooling

model

7.5 m
(25 ft)

None

None

Pipe length

10 m
(33 ft)

100 g

(3.5 oz)

50 g

(1.8 oz)

15 m
(49 ft)

300 g

(10.6 oz)

150 g

(5.3 oz)

20 m
(66 ft)

500 g

(17.6 oz)

250 g

(8.8 oz)

Additional
refrigerant

Heat & Cool

(Reverse cycle)

25 m
(82 ft)

700 g

(24.7 oz)

350 g

(12.3 oz)

LO

HI

6

8

ELECTRICAL WIRING

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”) of 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”) of 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. 31

A. Solid wire

Strip 25 mm (15/16”)

Insulation

Loop

B. Strand wire

Strip 10 mm (3/8”)

Round
terminal

Wire

Screw with
special washer

Round terminal

Terminal
board

Wire

Screw with
special washer

Round
terminal

HOW TO FIXED CONNECTION CORD AND
POWER CORD AT THE CORD CLAMP

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

Fig. 32

Insulation tube

Insulation tube Cord clamp

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

1. INDOOR UNIT SIDE

WARNING

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

plied to the indoor unit and outdoor unit.

2 Match the terminal board numbers and connection cord

colors with those of the outdoor unit.
Erroneous wiring may cause burning of the electric
parts.

3 Connect the connection cord firmly to the terminal

board. 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.

Body

Be sure to overlap the
insulation

Coupler heat insulation

No gap

Coupler heat insulation

INSTALLING THE COUPLER

HEAT INSULATION

After checking for gas leaks, insulate by wrapping insulation around the
two parts (large and small) of the indoor unit coupling, using the coupler
heat insulation.
After installing the coupler heat insulation, wrap both ends with vinyl tape
so that there is no gap.

Fig. 30

CAUTION

Must fit tightly against body without any gap.

(2) After wiring is complete, clamp the remote controller cord and con-

nection cord with the cord clamp.

(3) Install the control box cover and cover (wire) B.

Fig. 34

Cover (wire) B

Control box cover

Cord clamp

Connection cord
(To the outdoor unit)

Fig. 35

Red

White

Black

Ceiling height setting

Set the DIP switch for the ceiling height according to the table below.

Table 8

CAUTION

1 If the setting for a low ceiling is selected, the capacity

of the air conditioner decreases slightly.

2 Do not set any switches other than those specified in

this sheet. The air conditioner may not operate correctly
if any switches other than those specified are changed.

Remote
controller

Terminal board

OUTDOOR
UNIT

Connection
cord

2. OUTDOOR UNIT SIDE

WARNING

1 Before starting work, check that power is not being

supplied to the indoor unit and outdoor unit.

2 Match the terminal board 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 and the power supply

cord firmly to the terminal board. Imperfect installation
may cause a fire.

4 Always fasten the outside covering of the connection

cord and the power supply cord with cord clamps. (If
the insulator is chafed, electric leakage may occur.)

5 Always connect the ground wire.

(1) Remove the terminal cover of the outdoor unit, and insert the end of

the connection cord and the power supply cord into the terminal board.

(2) Fasten the connection cord and the power supply cord with the cord

clamp, and install the terminal cover.

Fig. 37

Power supply

Remote controller

Black

White

Red

Outdoor unit
side terminal

Indoor unit
side terminal

Power line

Control line

EARTH

NL32

(N)

1

Connection cord

Terminal board

Cord clamp

Power supply cord

Insulation tube

Connection
cord

Power supply
cord

Cord clamp

Insulation tube

L
N
3

1

3

2

(N)

2

(N)

1

3
2
1

EARTH

Terminal
cover

45 mm

45 mm

CAUTION

When routing the ground wires, leave slack as shown in
the illustrations.

9

10

POWER

WARNING

1 The rated voltage of this product is 230 V A.C. 50 Hz.

2 Before turning on 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 receptacle to supply power to the air conditioner.

4 Use a special branch circuit breaker and receptacle

matched to the capacity of the air conditioner.
(Install in accordance with standard.)

5 Perform wiring work in accordance with standards so

that the air conditioner can be operated safely and posi­tively.

6 Install a leakage special branch circuit breaker in ac-

cordance with the related laws and regulations and elec­tric company standards.

CAUTION

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

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

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

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

3 This air conditioner must be connected to a power

source that has an electrical impedance of 0.159 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.

ONONOFF

1
2
3
4
5
6

1. INSTALLING THE REMOTE CONTROLLER

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

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

Fig. 46

Front case
(back side)

Rear case

Connector

Remote
controller wires

Rear case

Connector

Front case

1. Red

2. White

3. Black

Binder

3. SETTING THE DIP SWITCHES

When using a battery (memory backup)

Fig. 49

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.

DIP Switch

Screws

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.
(3) If the remote controller wires run through the room, use a tool to cut

away the thin area on the upper center of the front case.

Fig. 48
(Example)

11

REMOTE CONTROLLER

SETTING

CAUTION

1 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.

2 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.

3 Do not touch the remote controller PC board and PC

board parts directly with your hands.

Temperature sensor

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.

Fig. 47

SUMOTUWETH FR

SA

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.

A

B. Remote controller setting

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

B

C

Indoor unit

(1) When the THERMO SENSOR button is pressed, the lock display

flashes because the function is locked at the factory.

Fig. 50

(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 ap-

pears.

(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.

12

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 simultane-

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

Fig. 53

Unit number (usually 0)

Error code

(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 sec-

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

Fig. 54

Test run display

(3) Press the set temperature buttons simultaneously for 5 sec-

onds or more to stop the self-diagnosis.

Table 9

Ex. Self-diagnosis

Error code Error contents

Communication error
(indoor unit

remote controller)
Communication error
(indoor unit outdoor unit)

Room temperature sensor open

Room temperature sensor short-circuited

Indoor heat exchanger temperature sensor open

Indoor heat exchanger temperature sensor short­circuited
Outdoor heat exchanger temperature sensor open

Outdoor heat exchanger temperature sensor short­circuited
Power source connection error

Float switch operated

Outdoor temperature sensor open

Outdoor temperature sensor short-circuited

Discharge pipe temperature sensor open

Discharge pipe temperature sensor short-circuited

00
01
02

03
04
05
06

07
08
09
0A
0b
0c
0d

Indoor unit No. 0 Indoor unit No. 1 Indoor unit No. 2 Indoor unit No. 3

Remote
controller
wire

Remote
controller

(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.

Indoor unit

Rotary Switch

Remote controller

DIP Switch

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)

Fig. 59

(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

Master unit

1 (Normal)

2 (Dual)ONOFF

OFF

OFF

DIP-SW No. 1 DIP-SW No. 2

Remote controller

DIP Switch

Number of
remote
controllers

Slave unit

1 (Normal)

2 (Dual)–ON–ON

DIP-SW No. 1 DIP-SW No. 2

SW3

Table 11

Table 12

Fig. 60

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.

Table 10

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.

Quick flash continued Quick flash continued

Model abnormal or
EEPROM abnormal

1 quick flash repeated Lighting continued

Power source
connection error

2 quick flash repeated Lighting continued

Discharge tempera­ture sensor error

3 quick flash repeated Lighting continued

Outdoor heat
exchanger tempera­ture sensor error

4 quick flash repeated Lighting continued Outdoor temperature

sensor error

5 quick flash repeated Lighting continued

Communication signal error
6 quick flash repeated Lighting continued Indoor unit error
7 quick flash repeated Lighting continued Discharge temperature

abnormal
8 quick flash repeated Lighting continued

High pressure abnormal

Error display

LED1 LED2 Error contents

Error code Error contents

Outdoor high pressure abnormal

Discharge pipe temperature abnormal

Model abnormal

Indoor fan abnormal

Outdoor signal abnormal

Outdoor EEPROM abnormal

0E
0F
11
12
13

14

0.1 sec.

OFF

ON

0.1 sec.

OFF

ON

0.5 sec.

2 sec.

OFF

ON

OFF

ON

0.5 sec.

2 sec.

OFF

ON

OFF

ON

0.5 sec.

2 sec.

OFF

ON

OFF

ON

1 2 3

1 2 3

1 2 3

ONOFF

1
2
3
4
5
6

ON

1 2 3 1 2 3 1 2 3

1 2 3

1 2 3

ONOFF

1
2
3
4
5
6

NO.

SW state

Detail

OFF ON

1 ✽ Dual remote controller

2 ✽ setting

3

One unit

✽ Multiple unit Group control setting

4

Heat & Cool model

Cooling only model

Model setting

5 Invalidity Validity ✽ Auto changeover setting

6 Invalidity✽ Validity Memory backup setting

NO.

SW state

Detail

OFF ON

1 Invalidity Validity ✽ Auto restart setting

2 ——✽ Temperature correction

3 ——✽ setting for heating

1 ——Remote controller setting

2 — ✽ —

Air flow setting

3 — ✽ —

DIP-Switch 1

● Indoor unit

Table 13

● Remote controller

Table 14

[DIP-SWITCH SETTING]

DIP-Switch 4

DIP-Switch

✽ : Factory setting

OPENING THE DUCT
CONNECTION HOLE

Fig. 62

Distribution duct

Distribution duct

Fresh air

CAUTION

1 When performing hole opening work, be careful not to

damage the drain pan.

2 When connecting the distribution duct, to make the air

flow easily, block the outlet port with the blower cover
insulation as shown by the hatched lines in Fig. 62. For
the blocking direction, refer to Fig. 38.

1. DIMENSION

Screw position and connection hole which are fresh air duct and distribu­tion duct.

Fig. 63

P. D 120

160

4

5°

4

5°

ø100

ø70

113

334.2

P. D 88

97

Unit: mm

12-ø3.3 self tapping screw holes (for 4 mm)

2. DISTRIBUTION DUCT AND FRESH AIR DUCT
HOLE PROCESSING

Use the distribution duct hole and fresh air duct hole by removing the
insulation material as shown below.

Fig. 64

Cut

Cut

Cabinet

• Cut off the part (Cabinet) indicated by the arrow in the Fig. 64 with

nippers, needle nose pliers, etc.

Fig. 65

PART NO. 9365388044

Fig. 51

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.

(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 sen-

sor of the indoor unit or the remote controller.

Fig. 52

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)

Fig. 56

Cabinet

Knife

Insulation
(Inner box)

14

123

O

F

F

SW 4

123

O

F

F

SW 1

Indoor unit PC board

Dip switch
(SW4)

Indoor unit
PC board

Fig. 36

DAY OFF

DELETE SET

ENERGY

SAVE

THERMO
SENSOR

SET BACK

DAY

CLOCK ADJUST

3. AUTO RESTART

• When the air conditioner power was temporarily turned off by a power
failure etc., it restarts automatically after the power recovers.
(Operated by setting before the power failure)

The auto restart function can be
canceled.

(1) DIP switch setting (indoor unit)

Change the DIP switch (SW1-1)
on the indoor unit circuit board
from ON to OFF. The auto restart
function will be canceled.

Indoor unit

OFF

123

OFF

SW1

OFF

123

SW4

DIP Switch

Fig. 61

3. CHECKING DRAINAGE

To check the drain, remove the water cover and fill with 2 to 3rof water as
shown in Fig. 55.
The drain pump operates when operating in the cooling mode.

Fig. 55

Water cover

Drain pipe

Watering pot

13

SPECIAL INSTALLATION

METHODS

CAUTION

1 When setting the rotary switch and DIP switches, do

not touch any other parts on the circuit board directly
with your bare hands.

2 Be sure to turn off the main power.

Indoor unit

Indoor unit

Remote
controller
wire

Fig. 57 Fig. 58

Indoor unit

Master

unit

Slave

unit

• Open the holes and cut the insulation with a knife.
* Be careful not to damage the internal parts.
* Be careful not to cut yourself on the cutout in the metal plate.
* Please remove the insulation (inner box) left over after cutting.

• Connect the distribution duct.
* When mounting the duct, block the gap so that there is no cold air leakage.
*Insulate the duct and cut connection.

CAUTION

The air conditioner cannot take in fresh air by itself. When
connecting a fresh air duct, always use a duct fan.

Remote
controller