Toshiba MMU-AP0121MH, MMU-AP0071MH, MMU-AP0181MH, MMU-AP0091MH, MMU-AP0151MH User Manual

FILE NO. A06-002

SERVICE MANUAL

MMU-AP0071MH MMU-AP0091MH MMU-AP0121MH MMU-AP0151MH MMU-AP0181MH

• This Service Manual describes contents of the Compact 4-Way Air Discharge Cassette indoor unit. For the outdoor unit, refer to the Manual with FILE No. A03-009, A05-004, A05-015.

PRINTED IN JAPAN, Apr., 2006 ToMo

CONTENTS

SAFETY CAUTION ............................................................................................ 3

1. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ........................................ 8

2. WIRING DIAGRAM..................................................................................... 9

3. PARTS RATING........................................................................................ 10

4. REFRIGERATING CYCLE DIAGRAM...................................................... 34

5. CONTROL OUTLINE................................................................................ 35

6. APPLIED CONTROL ................................................................................ 39

7. TROUBLESHOOTING.............................................................................. 44

8. CONFIGURATION OF CONTROL CIRCUIT ............................................ 94

9. DETACHMENTS ....................................................................................... 99

10. P.C. BOARD EXCHANGE PROCEDURES ............................................ 108

11. EXPLODED VIEWS AND PARTS LIST .................................................. 113

SAFETY CAUTION

The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents,

and keep them.

WARNING

Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs.

Check earth wires.

Prohibition of modification.

Use specified parts.

Do not bring a child

close to the equipment.

Insulating measures

No fire

If the earth wire is not correctly connected, contact an electric engineer for rework.

Do not modify the products.

Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury.

For spare parts, use those specified (

If unspecified parts are used, a fire or electric shock may be caused. ∗: For details, refer to the parts list.

Before troubleshooting or repair work, do not bring a third party (a child, etc.) except the repair engineers close to the equipment.

It causes an injury with tools or disassembled parts. Please inform the users so that the third party (a child, etc.) does not approach the equipment.

Connect the cut-off lead cables with crimp contact, etc, put the closed end side upward and then apply a water-cut method, otherwise a leak or production of fire is caused at the users’ side.

When repairing the refrigerating cycle, take the following measures.

1) Be attentive to fire around the cycle. When using a gas stove, etc, be sure to put out fire before work; otherwise the oil mixed with refrigerant gas may catch fire.

2) Do not use a welder in the closed room. When using it without ventilation, carbon monoxide poisoning may be caused.

3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may catch the inflammables.

∗∗

∗).

∗∗

Refrigerant

Check the used refrigerant name and use tools and materials of the parts which match with it.

For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the outdoor unit where is easy to see. To prevent miss-charging, the route of the service port is changed from one of the former R22.

For an air conditioner which uses R410A, never use other refrigerant than R410A. For an air conditioner which uses other refrigerant (R22, etc.), never use R410A.

If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating cycle and an injury due to breakage may be caused.

Do not charge refrigerant additionally.

If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in the refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant over the specified standard amount is charged and an abnormal high pressure is applied to the inside of the refrigerating cycle resulted in cause of breakage or injury. Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute vacuuming, and then newly recharge the specified amount of liquid refrigerant. In this time, never charge the refrigerant over the specified amount.

When recharging the refrigerant in the refrigerating cycle, do not mix the refrig erant or air other than R410A into the specified refrigerant.

If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating cycle resulted in cause of injury due to breakage.

After installation work, check the refrigerant gas does not leak.

If the refrigerant gas leaks in the room, poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.

Never recover the refrigerant into the outdoor unit.

When the equipment is moved or repaired, be sure to recover the refrigerant with recovering device. The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident such as breakage or injury is caused.

Assembly/Cabling

Insulator check

Ventilation

Be attentive to

electric shock

Compulsion

WARNING

After repair work, surely assemble the disassembled parts, and connect and lead the removed cables as before. Perform the work so that the cabinet or panel does not catch the inner cables.

If incorrect assembly or incorrect cable connection was done, a disaster such as a leak or fire is caused at user’s side.

After the work has finished, be sure to use an insulation tester set (500V mugger) to check the resistance is 2MW or more between the charge section and the non-charg e metal section (Earth position).

If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.

When the refrigerant gas leaks during work, execute ventilation.

If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the refrigerant and the closed room full with gas is dangerous because a shortage of oxygen occurs. Be sure to execute ventilation.

When checking the circuit inevitably under condition of the power-ON, use rubber gloves and others not to touch to the charging section.

If touching to the charging section, an electric shock may be caused.

When the refrigerant gas leaks, find up the leaked position and repair it surely.

If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the service valve, otherwise the refrigerant gas may leak into the room. The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.

When installing equipment which includes a large amount of charged refrigerant such as a multi air conditioner in a sub-room, it is necessary that the density does not the limit even if the refrigerant leaks.

If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is caused.

For the installation/moving/reinstallation work, follow to the Installation Manual.

If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric shock or fire is caused.

Check after rerair

Check after reinstallation

Put on gloves

Cooling check

After repair work has finished, check there is no trouble.

If check is not executed, a fire, electric shock or injury may be caused. For a check, turn off the power breaker.

After repair work (installation of front panel and cabinet) has finished, execute a test run to check there is no generation of smoke or abnormal sound.

If check is not executed, a fire or an electric shock is caused. Before test run, install the front panel and cabinet.

Check the following items after reinstallation.

1) The earth wire is correctly connected.

2) The power cord is not caught in the product.

3) There is no inclination or unsteadiness and the installation is stable. If check is not executed, a fire, an electric shock or an injury is caused.

CAUTION

Be sure to put on gloves (

If not putting on gloves, an injury may be caused with the parts, etc. (∗) Heavy gloves such as work gloves

When the power was turned on, start to work after the equipment has been sufficiently cooled.

As temperature of the compressor pipes and others became high due to cooling/heating operation, a burn may be caused.

∗∗

∗) during repair work.

∗∗

• New Refrigerant (R410A)

This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer.

1. Safety Caution Concerned to New Refrigerant

The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed. Therefore, be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner with new refrigerant during installation work or service work. If an incorrect work or incorrect service is performed, there is a possibility to cause a serious accident. Use the tools and materials exclusive to R410A to purpose a safe work.

2. Cautions on Installation/Service

(1) Do not mix the other refrigerant or refrigerating oil.

For the tools e xclusive to R410A, shapes of all the joints including the service port differ from those of the former refrigerant in order to prev ent mixture of them.

(2) As the use pressure of the new refrigerant is high, use material thickness of the pipe and tools which are

specified for R410A.

(3) In the installation time, use clean pipe materials and work with great attention so that water and others do

not mix in because pipes are affected by impurities such as water, oxide scales, oil, etc. Use the clean pipes.

Be sure to brazing with flowing nitrogen gas. (Never use gas other than nitrogen gas.) (4) For the earth protection, use a vacuum pump for air purge. (5) R410A refrigerant is azeotropic mixture type refrigerant. Therefore use liquid type to charge the refrigerant.

(If using gas for charging, composition of the refrigerant changes and then characteristics of the air condi-

tioner change.)

3. Pipe Materials

For the refrigerant pipes, copper pipe and joints are mainly used. It is necessary to select the most appropriate pipes to conform to the standard. Use clean material in which impurities adhere inside of pipe or joint to a minimum.

(1) Copper pipe

The pipe thickness, flare finishing size , flare nut and others differ according to a refrigerant type. When using a long copper pipe for R410A, it is recommended to select “Copper or copper-base pipe without

seam” and one with bonded oil amount 40mg/10m or less . Also do not use crushed, deformed, discolored (especially inside) pipes. (Impurities cause clogging of expansion valves and capillary tubes.)

Use the flare nuts which are attached to the air conditioner unit.

(2) Joint

The flare joint and socket joint are used for joints of the copper pipe.

The joints are rarely used for installation of the air conditioner. However clear impurities when using them.

4. Tools

(1) Required Tools for R410A

Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary , etc.

Accordingly, the tools to be used are classified into the following three types.

1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))

2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)

3) Tools commonly used for R410A and for conventional refrigerant (R22)

The table below shows the tools exclusive for R410A and their interchangeability.

Tools exclusive for R410A (The following tools for R410A are required.)

Tools whose specifications are changed for R410A and their interchangeability

Conventional air

conditioner installation

Whether new equipment can be used with conventional refrigerant

Yes

*(Note 1)

Yes

No.

Used tool

Flare tool Copper pipe gauge for

adjusting projection margin

Torque wrench

Gauge manifold Charge hose

Vacuum pump adapter Electronic balance for

refrigerant charging Refrigerant cylinder Leakage detector Charging cylinder

Usage

Pipe flaring

Flaring by conventional flare tool

Connection of flare nut

Evacuating, refrigerant charge, run check, etc.

Vacuum evacuating

Refrigerant charge Refrigerant charge

Gas leakage check Refrigerant charge

air conditioner installation

Existence of new equipment for R410A

Yes

Yes Yes

Yes

(Note 2)

R410A

Whether conventional equipment can be used

*(Note 1)

Yes

No No No

(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection

margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.

(Note 2) Charging cylinder for R410A is being currently dev eloped.

General tools (Conventional tools can be used.)

In addition to the above exclusive tools, the following equipments which serve also f or R22 are necessary as the general tools.

(1) Vacuum pump

Use vacuum pump by

attaching vacuum pump adapter. (2) Torque wrench (3) Pipe cutter (4) Reamer

(7) Screwdriver (+, –) (8) Spanner or Monkey wrench (9) Hole core drill (10) Hexagon wrench (Opposite side 4mm) (11) Tape measure (12) Metal saw

(5) Pipe bender (6) Lev el vial

Also prepare the following equipments for other installation method and run check. (1) Clamp meter (2) Thermometer

(3) Insulation resistance tester (4) Electroscope

5. Recharge of Refrigerant

When recharge of the refrigerant is required, charge the new refrigerant with the specified amount in the procedure as described below .

Recover the refrigerant and check there is no refrigerant in the equipment.

Connect the charge hose to the packed valve service ports at gas side, liquid side, and balance side of the outdoor unit.

Connect the charge hose to vacuum pump adaptor.

Open the packed valves of the balance pipe fully at liquid and gas sides, and then return the valve at gas side a little to the closed side.

Open fully PMV of the outdoor unit.

• Turn on power of the outdoor unit.

• Short CN30 on I/F P.C. board of the outdoor unit.

•

Turn off power of the outdoor unit within 2 minutes after short-circuiting.

When the pressure has lowered until indication of the compound gauge pointed -0.1MPa (–76cmHg), open fully the handle Low and turn off the power of vacuum pump.

Leave it as it is for 1 to 2 minutes and check the indicator of the compound gauge does not return.

Set the refrigerant cylinder on the electron balance, connect the charge hose to connecting ports of the cylinder and the electron gauge, and then charge the liquid refrigerant from the service port at liquid side. (Shield with the gauge manifold so that refrigerant does not flow to gas side.)

(Charge the refrigerant as below.)

Low-

pressure gauge

High-

Open fully the handle Low of the gauge manifold, and then turn on the power of vacuum pump for vacuuming.

Never charge the refrigerant o ver the specified amount.

Do not charge the additional refrigerant.

Connected to indoor unit

Main pipe

Brazed

Fully tightened

Valve fully closed (gas side)

Connected to other terminal units

Valve fully closed (liquid side)

pressure is applied to the inside of the refrigerating cycle resulted in cause of breakage or injury.

Set the equipment so that liquid refrigerant can be charged.

When using a cylinder with siphon pipe, liquid can be charged without inversing the cylinder.

4mm-hexagonal wrench is required.

[ Cylinder with siphon ] [ Cylinder without siphon ]

Gauge manifold

OUTDOOR unit

Gauge manifold

OUTDOOR unit

Center unit

Service port

Copper pipe

Service port

Ø6.4

Siphon

VLV

Reducing valve

Ø6.4 Copper pipe

Gauge manifold

Nitrogen

gas

cylinder

Refrigerant

cylinder

Electronic

balance

Electronic

balance

Refrigerant

R410A refrigerant is consisted with HFC mixed refrigerant. Therefore if the refrigerant gas is charged, the composition of the charged refrigerant changes and characteristics of the equipment changes.

6. Environment

Use “Vacuum pump method” for an air purge (Discharge of air in the connecting pipe) in installation time.

• Do not discharge flon gas into the air to protect the earth environment.

• Using the vacuum pump method, clear the remained air (Nitrogen, etc.) in the unit. If the air remains, the pressure in the refrigerating cycle becomes abnormally high and an injury and others are caused due to burst.

1. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

200

1000 or more

15 or more

1000 or more

Obustacle

1000 or more

15 or more

Space required for

installation and servicing

149

175

207

Knockout for fresh

145.5

105

air intake Ø100

Bottom face of ceiling

595 to 660 Ceiling open dimension

142 64 368.5

700 Panel external dimension

595 to 660 Ceiling open dimension

525 Hanging bolt pitch

Check port

( 450)

Check port

(o 450)

200

Check port

( 450)

Drain-up standing-up size

Indoor unit

627.5

or less

Stand-up

Bottom face of ceiling

Stand-up

850 or less

Note)

595 to 660 Ceiling open dimension

As ABS is used for the drain discharge port of the main unit, the vinyl chloride paste cannot be used.

Use the flexible hose (Band fix) included in the package.

2.7

• Wired remote controller

120

(RBC-AMT31E)

120

268 27

220.5

Drain discharge port

Hanging bolt M10 or W3/8 local arrange

145.5 134

Bottom face of ceiling

Ceiling panel

200

Ø162 (Pitch)

For branch duct knockout square hole Ø150

4-Ø3.2 hole (For 4mm tapping screw)

Bottom face of ceiling

105235 235

575 Unit external dimension

Electric parts box

320.5

575 Unit external dimension

Ø162

(Pitch)

256

177

525 Hanging bolt pitch

700 Panel external dimension

595 to 660 Ceiling open dimension

Refrigerant pipe (Liquid) Ø6.4

For branch ductt knockout square hole Ø150

Refrigerant pipe (Gas) 0151, 0181MH : Ø12.7 0071 to 0121MH : Ø9.5

214 105

97.5 42 148

139.5

190.5

120

4-Ø3.2 hole (For 4mm tapping screw)

Wiring connection port

9310570

142

158

2. WIRING DIAGRAM

PMV

Indoor unit

earth screw

Power supply

single phase

220-240V, 50Hz

220V, 60Hz

CN333

(WHI)

5 3 1

CN334

(WHI)

5 4

CN68 (BLU)

1 1 3 3

CN304

(GRY)

CN67 (BLK)

RED

1 1

WHI

3 3

Flow selector

unit earth screw

S(N)R(L)

6 4 3 1 2 5 6 4 3 1 2 5

1 2 3 4 5 6 1 2 3 4 5 6

CN82 (BLU)

5 3 1

5 4 3 2 1

RY302

RY303

Fuse

T6.3A

250V

P301

BLK

TC1

1 3 1 2 3

CN100 (BRW)

CN66 (WHI)

2 1

CN44

(BRW)

2 1

CN50 (WHI)

3 4

CN32

(WHI)

T10

(Fan drive) Option

Control P.C. board

CN61 (YEL)

1 3 1 2 3

CN34

(RED)

drive circuit

1 2 1 2 1 2

CN104

(YEL)

Motor

CN71

CN72

Fuse

T3.15A

250V

for Indoor unit

MCC-1402

TA TCJ TC2

CN101

CN102

(BLK)

(RED)

(CHK)

2 1

(DISP)

654321 54321654321

DC20V DC15V DC12V DC 7 V

CN81 (BLK)

Power supply circuit

CN60 (WHI)

CN309

(YEL)

3 11 2 1 2 1 2

CN80

(GRN)

CN73

(RED)

CN70 (WHI)

CN20 (BLU)

CN33 (WHI)

CN41 (BLU)

3 2

1 CN40

(BLU)

3 2

PNL

1 2

EXCT

1 2

Filter

1 5

4 3

GRL 2 1

1 2

2 3

3 4

4 5

BLK BLK

BLU BLU

Outdoor

unit

U2U1

remote controller

Wireed

1 2 3 4 5

LM2

BAU2U1

remote controller

1 2 3

LM1

4 5

WHI BLK

1 2 1 2

CN001

(WHI)

Adapter for

wireless

Symbol

TA TC1 TCJ TC2

LM1, LM2

DP FS

RY302

PMV

Parts name

Fan motor Indoor temp. sensor Temp. sensor Temp. sensor Temp. sensor Louver motor Drain pump motor Float switch Drain control relay Pulse motor valve

Color

indication

RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN: ORANGE BRW: BROWN GRN: GREEN

1. indicates the terminal bolock letter. Letter at inside indicates the terminal number.

2. A dotted line and broken line indicate the wiring at site

3. indicates a control P.C. board.

3. PARTS RATING

3-1. Parts Rating

Model MMU-

Fan motor Motor for horizontal grille Pulse motor Pulse motor valve TA sensor TC1 sensor TC2 sensor TCJ sensor Float switch Drain pump motor

AP0071MH AP0091MH AP0121MH AP0151MH AP0181MH

SWF-230-60-1R

MP24Z3N

EDM-MD12TF-3

EDM-B25YGTF-3 EDM-B40YGTF-3

Lead wire length : 155mm Vinyl tube Ø4 size lead wire length : 1400mm Vinyl tube Ø6 size lead wire length : 1500mm Vinyl tube (Black) Ø6 size lead wire length : 1400mm Vinyl tube (Red)

FS-0218-103

ADP-1409

3-2. Name of Each P art

Earth screw

It is included in the electric parts box.

Clip

The clip is to open/close the air inlet grille.

Air inlet grille

Air in the room is sucked from here.

Air outlet/Air outlet flap

Select air blow direction in cooling or heating operation each.

Air filter

Removes dust and trash. (Air filter is provided in the air grille.)

3-3. Parts Name of Remote Controller

Display section

In the display example, all indicators are displayed for the explanation. In reality only, the selected contents are indicated.

• When turning on the leak breaker at the first time, [SET DATA] flashes on the display part of the remote controller. While this display is flashing, the model is being automatically confirmed. Accordingly, wait for a while after [SET DATA] display has disappeared, and then use the remote controller.

78 9

1 4

3 5

SET

DATA

SETTING

TEST

UNIT No.

R.C. No.

CODE No.

SET DATA display

Displayed during setup of the timer.

Operation mode select display

The selected operation mode is displayed.

CHECK display

Displayed while the protective device works or a trouble occurs.

PRE-HEAT display

Displayed when the heating operation starts. While this indication is displayed, the indoor fan

stops.

Operation ready display

Displayed when cooling or heating operation is impossible because the outdoor temperature goes out of the operable range.

FILTER RESET

SET

TEMP .

DATA

SETTING

TEST

10 11

TEST

TIMER SET

UNIT No.

R.C. No.

SWING/FIXTIME

16 13

CODE No.

ON / OFF

FAN

MODE

VENT

UNITSET CL

Display section

Operation section

Timer time display

Time of the timer is displayed. (When a trouble occurs, the check code is displayed.)

Timer SETIN setup display

When pushing the Timer SET button, the display of the timer is selected in order of [OFF] → [ON]

Filter display

If “FILTER ” is displayed, clean the air filter.

TEST run display

Displayed during a test run.

Flap position display

Displays flap position.

SWING display

Displayed during up/down movement of the flap.

Set up temperature display

The selected set up temp. is displayed.

Remote controller sensor display

Displayed while the sensor of the remote controller is used.

→ [OFF] repeat OFF timer

→ No display.

No function display

Displayed if there is no function even if the button is pushed.

Air volume select display

The selected air volume mode is displayed.

(AUTO) (MED.) (LOW)

Mode select control display

Displayed when pushing “Operation mode select ” button while the operation mode is fixed to heating or cooling by the system manager of the air conditioner.

Central control display

Displayed when using the remote controller together with the central control remote controller, etc. If Remote controller is prohibited at the centralcontrol side,

ON / OFF

the change is not accepted. (The contents available to be set up on the remote controller differ according to the central control mode. For details, refer to Owner’s Manual of the central control remote controller.)

MODE

(HIGH)

flashes when operating

, / buttons and

Operation section

ON / OFF

Push each button to select a desired operation. This remote controller can operate the maximum 8 indoor units.

• The details of the operation needs to be set up once, afterward, the air conditioner can be used by pushing

ON / OFF

button only.

TEMP.

FIL TER

TEST

RESET

5 3

Air volume select button

Selects the desired air volume mode.

Timer set button

TIMER SET button is used when the timer is set up.

Check button

The CHECK button is used for the check operation. During normal operation, do not use this button.

Fan button

FAN button is used when a fan which is sold on the market or etc. is connected.

TIMER SET

ON / OFF

FAN

SWING/FIXTIME

MODE

VENT

9 4

UNITSET CL

When the button is pushed, the operation starts, and it stops by pushing the button again.

When the operation has stopped, the operation lamp and all the displays disappear.

Operation select button

Selects desired operation mode.

Set up temperature button

Adjusts the room temperature. Set the desired set temperature by pushing

button

or .

Filter reset button

Resets (Erases) “FILTER ” display.

Wind direction and Swing

UNIT

: If the multiple indoor units are operated by only one remote controller, select the units when the air direction is adjusted.

SWING/FIX

: Set up the auto swing and angle of the flap.

Operation lamp

Lamp is lit during the operation. Lamp is off when stopped.

Although it flashes when operating the protection device or abnormal time.

OPTION :

Remote controller sensor

Usually the TEMP. sensor of the indoor unit senses the temperature. The temperature on the surrounding of the remote controller can also be sensed. For details, contact the dealer from which you have purchased the air conditioner.

• In case that one remote controller controls the multiple indoor units, the setup operation is unavailable in group control.

3-4. Correct Usage

LOW MED. HIGH

AUTO

When you use the air conditioner for the first time or when you change the SET DATA value, follow the procedure below. From the next time, the operation displayed on the remote controller will start by pushing the

ON / OFF

Preparation

Turn on the main power switch and/or the leakage breaker.

• When the power supply is turned on, a partition line is display ed on the display part of the remote controller. * After the power supply is turned on, the remote controller does not accept an operation for approx. 1 minute,

but it is not a f ailure.

• While using the air conditioner, operate it only with

button only.

switch and the leak breaker.

REQUIREMENT

ON / OFF

button without turning off the main power

TEMP.

ON / OFF

(Dehumidity)

SWING/FIXTIME

MODE

FAN

UNITSET CL

” button.

TIMER SET

FIL TER

TEST

RESET

Push

The operation lamp goes on, and the operation starts.

Select an operation mode with the “MODE

One push of the button, and the display changes in the order shown on the right.

• In HEAT mode, if the room temperature reaches to the set temperature, the outdoor unit stops and the air

flow becomes ULTRA LOW and the air volume decreases.

• In the heating mode, the fan stops so that cool air is not discharged and Heat is displayed.

Select air volume with “FAN

One push of the button, and the display changes in the order shown on the right.

• When air volume is “AUTO ”, air volume differs according to the temperature difference between set temp. and room temp.

ON / OFF

button.

FAN

” button.

MODE

VENT

AUTO

Cooling only model

DRY COOL FAN

Heat-pump model

HEAT DRY COOL FAN

• In DRY mode, “AUTO ” is displayed and the air volume is LOW.

• In heating operation, if the room temperature is not heated sufficiently with VOLUME “LOW ” operation, select “MED. ” or “HIGH ” operation.

Determine the set up temperature by pushing the “TEMP. ” or “TEMP. ” button.

Stop

Push

The operation lamp goes off, and the operation stops.

ON / OFF

button.

3-5. Automatic Operation (Super Heat Recovery Type Only)

When you set the air conditioner in mode or switch over from AUTO operation because of some settings change, it will automatically select either cooling, heating, or fan only operation depending on the indoor temperature.

TEMP.

ON / OFF

FAN

SWING/FIXTIME

UNITSET CL

FIL TER RESET

TIMER SET

TEST

Start

ON / OFF

Push this button to start the air conditioner.

Mode select button (MODE)

Select Auto.

Temperature button

Set the desired temperature.

• In case of cooling, start the operation after approx. 1 minute.

• In case of heating, the operation mode is selected in accordance with the room temperature and operation starts after approximately 3 to 5 minutes.

• When you select the Auto mode, it is unnecessary to set the fan speed. The FAN speed display will show A UTO and the fan speed will be automatically controlled.

• After the heating operation has stopped, FAN operation may continue for approx. 30 seconds.

• When the room temperature reaches the set temperature and the outdoor unit stops, the super low wind is discharged and the air volume decreases e xcessively. During defrost operation, the fan stops so that cool air is not discharged and “HEAT READ Y” is displayed.

• If the Auto mode is uncomfortable, you can select the desired conditions manually.

button

MODE

VENT

NOTE

When restarting the operation after stop

• When restarting the operation immediately after stop, the air conditioner does not oper ate for approx. 3 minutes to protect the machine.

Stop

Push

Push this button again to stop the air conditioner.

ON / OFF

button.

3-6. TIMER Operation

OFF

(OFF timer) (Repeat OFF timer)

No display

(ON timer)

OFF ON

A type of timer operation can be selected from the following three types. OFF timer : The operation stops when the time of timer has reached the set time. Repeat OFF timer : Every time, the operation stops after the set time has passed. ON timer : The operation starts when the time of timer has reached the set time.

Timer operation

TEMP.

TIMER SET

FAN

ON / OFF

MODE

SWING/FIXTIME

FIL TER

TEST

RESET

Push TIMER SET button.

• The timer display (type) changes for every

push of the button.

• SET DATA and timer time displays flash.

Push

For e very push of button, the set time increases in the unit of 0.5 hr (30 minutes). The maximum set time is 72.0 hr. For e very push of button, the set time decreases in the unit of 0.5 hr (30 minutes). The minimum set time is 0.5 hr.

TIME

to select “SET TIME”.

UNITSET CL

VENT

Push SET button.

SETTING

•

display disappears and timer time display goes on.

(When ON timer is activated, timer time, ON timer are displayed and other displays disappear.)

Cancel of timer operation

Push CL button.

• TIMER display disappears.

• When the operation stops after the timer reached the preset time, the Repeat OFF timer resumes the operation by pushing set time.

ON / OFF

NOTICE

button and stops the operation after the time of the timer has reached the

3-7. Adjustment of Wind Direction

• While the air conditioner stops, the horizontal flap (Up/Down air direction adjustment plate) automatically directs upward.

• While the air conditioner is in ready status for heating, the horizontal flap (Up/Down air direction adjustment plate) directs upward. The swinging operation starts after heating ready status has been cleared, but “SWING ” is displayed on the remote controller even if the status is ready to heating.

How to set up the air direction

SWING/FIX

Push

button during operation.

Every pushing the button, the air direction changes.

In Heating operation

Set the horizontal flap (Up/Down air direction adjustment plate) downward. If directing it upward, the hot air may not come to the foot come to the foot.

Initial setup

How to start swinging

SWING/FIX

Push

button. Set direction of the horizontal flap (Up/Down air direction adjustment plate) to the lowest position and then push

SWING/FIX

button again.

• [SWING ] is displayed and the air direction

automatically changes upward/downward. In case when one remote controller controls the multiple indoor units, each indoor unit can be selected and its air direction can be set up.

How to stop swinging

SWING/FIX

Push

button again during swinging of the horizontal flap.

• The horizontal flap can be stopped at the desired

position. After then the air direction can be again set up from the uppermost position by pushing button.

* While the horizontal flap is set downward in cool-

ing/drying operation, it does not stop. If stopping the horizontal flap which directs downward during swinging, it stops after moving to the 3rd position from the top position.

UNIT

• To set up the air direction individually, push

button to display each indoor unit No. in a group control. Then set up the air direction to a displayed indoor unit.

• If there is no display, all the indoor units can be

operated collectively.

• Every pushing

UNIT

button, the display exchanges

as shown in the figure.

SWING/FIX

UNIT

In Cooling / Dry operation

Set the horizontal flap (Up/Down air direction adjustment plate) upward. If directing it downward, the dew may fall on near the air air outlet port or it drips.

TEMP.

TIMER SET

SWING/FIXTIME

FIL TER

TEST

RESET

1, 2, 3 4

In FAN operation

Initial setup

Display when stopping the swing

Fan/Heat operation

ON / OFF

FAN

UNITSET CL

In all modes

Initial setup

MODE

VENT

Series of operation

Cool/Dry operation

Unit No. 1-1No display Unit No. 1-2

Unit No. 1-4 Unit No. 1-3

3-8. Information

Confirmation before operation

• Turn on the power switch 12 hours before starting the operation.

• Make sure whether earth wire is connected.

• Make sure the air filter is connected to the indoor unit.

Heating capacity

• A heat pump system which absorbs heat from outside of the room and then discharges heat into the room is adopted for heating. If the outside temperature falls, the heating capacity decreases.

• When the outside temperature is too low, it is recommended to use this air conditioner together with other heating equipment.

Defrost during heating operation

• In heating operation, if there is frost on the outdoor unit, the operation changes automatically to the defrost operation (Approx. 2 to 10 minutes) to increase the heating efficiency.

• During defrost operation, the fan of the indoor unit stops.

3-minutes protection

Protective device (High pressure s witch)

This device stops automatically an operation when excessive force is applied on the air conditioner.

If the protective device w o rks, the operation stops and the operation lamp flashes.

When the protective device works, the indication and the check code are displayed on the display

section of the remote controller. In the following cases, the protective device may work.

In cooling operation

• The suction port or discharge port of the outdoor unit is closed.

• A strong wind continuously blows to the discharge port of the outdoor unit.

In heating operation

• Dust or waste adheres excessively to air filter of the indoor unit.

• The discharge port of the indoor unit is closed.

If the protective device w o rks, turn off the main power switch, solve the cause, and then start the operation again.

TEST

• When restarting the operation just after the operation has been stopped or the main power switch has turned on, the outdoor unit does not work for approx. 3 minutes in order to protect the air conditioner.

Power failure

• If a power failure occurred during operation, all operations stop.

• When the power is returned after a power failure, the operation lamp notifies the power-ON by flashing operation lamp on the remote controller.

• When restarting the operation, push button again.

ON / OFF

Fan rotation in stopped unit

• In heating operation even in the stopped indoor unit, the fan rotates once for several minutes per approx. an hour when the other indoor unit is operating to protect the air conditioner .

Cooling/Heating operation of Super Modular Multi system air conditioner

• Although each indoor unit can be individually controlled in the Super Modular Multi system air conditioner, the cooling oper ation and the heating operation cannot be simultaneously performed in the multiple indoor units which are connected to an outdoor unit.

• If the cooling operation and the heating operation are simultaneously performed, the indoor unit

which ex ecutes cooling operation stops, and on the operation section lights up. On the other hand, the indoor unit which executes heating oper ation continues running. In a case that the manager of the air conditioner has fixed the operation to cooling or heating, an operation other than that set up is unavailable. If an operation other than that

set up is ex ecuted, on the operation section lights up and the operation stops.

Characteristics of heating operation

• The wind is not out just after starting an operation. The hot wind starts to blow 3 to 5 minutes after (Time differs according to indoor/outdoor temperature.) the indoor heat exchanger has warmed up.

• During operation, the outdoor unit may stop if the outside temperature rises.

3-9. Air Conditioner Operations and Performance

3 minutes protection function

3-minutes protection function prevents the air conditioner from starting for initial 3 minutes after the main powe r switch/circuit breaker is turned on for re-starting the air conditioner.

Power failure

Power failure during operation will stop the unit completely.

• To restart the operation, push the START/STOP button on the remote controller.

• Lightning or a wireless car telephone operating nearby may cause the unit to malfunction. Turn off the main power switch or circuit breaker and then turn them on again. Push the START/STOP button on the remote controller to restart.

Heating characteristics Preheating operation

The air conditioner will not deliver warm air immediately after it is turned on. Warm air will start to flow out after approximately 5 minutes when the indoor heat e xchanger warmed up.

Warm air control (In heating operation)

When the room temperature reaches the set temperature, the f an speed is automatically reduced to prevent to blow cold draft. At this time, the outdoor unit will stop.

Defrosting operation

If the outdoor unit is frosted during the heating operation, defrosting starts automatically (for approximately 2 to 10 minutes) to maintain the heating capacity.

• The fans in both indoor and outdoor units will stop during the defrosting operation.

• During the defrosting operation, the defrosted water will be drained from the bottom plate of the outdoor unit.

Heating capacity

In the heating operation, the heat is absorbed from the outside and brought into the room. This way of heating is called heat pump system. When the outside temperature is too low, it is recommended to use another heating apparatus in combination with the air conditioner .

Attention to snowfall and freeze on the outdoor unit

• In snowy areas, the air inlet and air outlet of the outdoor unit are often covered with snow or frozen up. If snow or freeze on the outdoor unit is left as it is, it may cause machine failure or poor warming.

• In cold areas, pay attention to the drain hose so that it perfectly drains w ater without w ater remaining inside for freeze prevention. If water freezes in the drain hose or inside the outdoor unit, it may cause machine failure or poor warming.

Air conditioner operating conditions

For proper perf ormance, operate the air conditioner under the following temperature conditions:

Cooling operation

Dry operation

Outdoor temperature : –5°C to 43°C Room temperature : 21°C to 32°C (Dry valve temp.), 15°C to 24°C (Wet valve temp.)

CAUTION

Outdoor temperature : 15°C to 43°C (Maximum suction air temp. 46°C) Room temperature : 17°C to 32°C

Room relative humidity – less than 80 %. If the air conditioner operates in excess of this figure, the surface of the air conditioner may cause dewing.

Heating operation

If air conditioner is used outside of the above conditions, safety protection may work.

Outdoor temperature : –15°C to 15°C (Wet valve temp.) Room temperature : 15°C to 28°C (Dry valve temp.)

3-10. When the Following Symptoms are Found

Check the points described below before asking repair servicing.

Symptom

Outdoor unit • White misty cold air

or water is out.

• Sometimes, noise “Pushu !” is heard.

Indoor unit •“Swish” sound is

heard sometimes.

• Slight “Pishi!” sound is heard.

• Discharge air smells.

• The operation lamp flashes

•“STANDBY indication is lit.

Check again.

• Sound or cool air is output from the stand by indoor unit.

• When power of the air conditioner is turned on, “Ticktock” sound is heard.

Cause

• Fan of the outdoor unit stops automatically and performs defrost operation.

• Solenoid valve works when defrost operation starts or finishes.

• When the operation has started, during the operation, or immediately after the operation has stopped, a sound such as water flows may be heard, and the operation sound may become larger for 2 or 3 minutes immediately after the operation has started. They are flowing sound of refrigerant or draining sound of dehumidifier.

• This is sound generated when heat exchanger, etc. expand and contract slightly due to change of temperature.

• Various smell such as one of wall, carpet, clothes, cigarette, or cosmetics adhere to the air conditioner.

• Flashes when power is turned on again after power failure, or when power switch is turned on.

”

• When cooling operation cannot be performed because another indoor unit performs heating operation.

• When the manager of the air conditioner has fixed the operation to COOL or HEAT, and an operation contrary to the setup operation is performed.

• When fan operation stopped to prevent discharge of hot air.

• Since refrigerant is flowed temporarily to prevent stay of oil or refrigerant in the stand by indoor unit, sound of flowing refrigerant, “Kyururu” or “Shaa” may be heard or white steam when other indoor unit operates in HEAT mode, and cold air in COOL mode may be blow-out.

• Sound is generated when the expansion valve operates when power has been turned on.

Operates or stops automatically. Does not operate.

Silent

Air is not cooled or warmed sufficiently.

It is not a failure.

It’s strange.

• Is the timer “ON” or “OFF”?

• Is it a power failure?

• Is the power switch turned off?

• Is the power fuse or breaker blown?

• Has the protective device operated? (The operation lamp goes on.)

• Is the timer “ON”? (The operation lamp goes on.)

• Are COOL and HEAT selected simultaneously? (“STANDBY indication is lit on the display column of the remote controller.)

• Is the suction port or discharge port of the outdoor unit obstructed?

• Are any door or window open?

• Is the air filter clogged with dust?

• Is discharge flap of the indoor unit set at appropriate position?

• Is air selection set to “LOW” “MED.”, and is the operation mode set to “FAN”?

• Is the setup temp. the appropriate temperature?

• Are COOL and HEAT selected simultaneously? (“STANDBY indication is lit on the display column of the remote controller.)

”

When the following symptoms are found, stop the operation immediately , turn off the power switch, and contact the dealer which you have purchased the air conditioner.

• Activation of switch is unstable.

• Fuse or breaker is blown periodically.

• Foreign matters or water entered by mistak e.

• When if activation cause of the protective device has been removed, the operation is not performed.

• Other unusual status occurred.

Accessory parts and Parts to be procured locally

H Accessory parts

Part name

Installation Manual

Heat insulating pipe

Q’ty

Shape

This manual

(Ensure hand over to customer)

For heat insulation of the pipe connecting section

Usage

PRECAUTIONS FOR SAFETY

• Ensure that all Local, National and International regulations are satisfied.

• Important safety information are described in this installation manual. Please ensure this manual is read thoroughly and kept for future reference.

• After the installation work, perform a trial operation to check for any problem. Follow the Owner’s Manual to explain how to use and maintain the unit to the customer.

• Turn off the main power supply switch (or breaker) before any unit maintenance.

• Ask the customer to keep the Installation Manual together with the Owner’s Manual.

Installation pattern

Installation gauge

Pattern fixing screw

Heat insulator

Washer

Hose band

Flexible hose

Heat insulator A

Heat insulator B

——

M5 × 16L

For checking of ceiling opening and the main unit position For positioning of the ceiling position

(To be used with the installation pattern) For attach the installation pattern

For heat insulation of drain connecting section

For hanging unit

For connecting drain pipe

For adjusting core-out of drain pipe

For sealing of wire connecting port

Refrigerant piping

• Piping material used for the conventional refrigerant cannot be used.

• Use copper pipe only with a wall thickness of 0.8 mm or more for Ø6.4, Ø9.5, Ø12.7.

• Flare nut and flare operations are also different from those of the conventional refrigerant. Use the flare nut fitted to the indoor unit of the air conditioner.

CAUTION New Refrigerant Air Conditioner Installation

• THIS AIR CONDITIONER FEATURES A NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DEPLETE OZONE LAYER.

The pressure of R410A is 1.6 times higher than that of former refrigerant R22. The refrigerating oil has also been changed. Therefore be sure that any former refrigerant, refrigerant oil or any other contaminants do not enter the refrigerating cycle of the air conditioner, during either installation or service work. If incorrect tools or operating procedures are used, there is a possibility of a serious accident. Use only tools and materials that have been designed to operate with R410A.

To prevent the risk of charging with an incorrect refrigerant, the dimensions of the charging port connections are different to those used for conventional refrigerant. Therefore only tools designed to operate with R410A can be used.

For connecting pipes, use piping specifically designed for R410A. During installation, ensure pipes are clean and ensure contaminants do not enter in the pipes as the system is

affected by impurities such as water, oxide scales, dirt, oil, etc. Do not use existing pipe work from previous installation as this will cause problems due to pressure resistances and impurities within the pipe.

CAUTION To Disconnect the Appliance from Main Power Supply.

This appliance must be connected to the main power supply by means of a switch with a contact separation of at least 3 mm.

WARNING

• Ask an authorized dealer or qualified installation professional to install/maintain the air conditioner.

Inappropriate installation may result in water leakage, electric shock or fire.

• Turn off the main power supply switch or breaker before attempting any electrical work.

Make sure all power switches are off. Failure to do so may cause an electric shock.

• Connect all of the installation wiring correctly.

If the installation wiring is incorrect electrical parts may be damaged.

• During the transportation and installation of the air conditioning unit, ensure that gaseous matter other than the specified refrigerant does not enter into the refrigeration cycle.

If a refrigerant becomes contaminated with foreign gases, the gas pressure within the refrigerant cycle will become abnormally high and may result in the fracture of pipe work and possible human injury.

• Do not modify this unit by removing any of the safety guards or by overriding any of the safety interlock switches.

• Exposure of the unit to water or other forms of moisture before installation may cause a short-circuit of the electrical parts.

Do not store it in a wet basement or expose to rain or water.

• After unpacking the unit, examine for possible damage.

• Do not install in a place that might increase the vibration of the unit.

• To avoid personal injury (with sharp edges), be careful when handling parts.

• Perform installation work properly according to the Installation Manual.

Inappropriate installation may result in water leakage, electric shock or fire.

• When the air conditioner is installed in a small room, provide appropriate measures to ensure that in the event of a refrigerant leak the rooms does not exceed the critical level.

1000

or more

15 or more

1000 or more

Obstacle

283

or more

283

or more

1000 or more

PRECAUTIONS FOR SAFETY

• Install the air conditioner securely in a location where the base can sustain the weight of the unit adequately.

• Perform the specified installation work to guard against an earthquake.

If the air conditioner is not installed appropriately, accidents may occur due to the unit falling.

• If refrigerant gas has leaked during the installation work, ventilate the room immediately.

If the leaked refrigerant gas comes in contact with fire, noxious gases may be generated.

• After the installation work, confirm that refrigerant gas does not leak.

If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gases may be generated.

• Electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Ensure the power supply to the air conditioner is exclusive to that unit only.

An insufficient power supply capacity or inappropriate installation may cause fire.

• Use only the specified wiring during the unit installation. Ensure that all terminals are securely fixed, so preventing any external forces having a negative effect on the terminals.

• Conform to the regulations of the local electric authority when wiring the power supply.

Inappropriate grounding may cause an electric shock.

• Do not install the air conditioner in a location that may be subjected to a risk of exposure to a combustible gas.

If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.

SELECTION OF INSTALLATION PLACE

WARNING

• The air conditioner must be installed in a location that can support the weight of the unit effectively.

If the unit is not installed on a foundation that can support its weight effectively, the unit may fall down, resulting in possible human injury.

• Where required ensure that the units installation is sufficient enough to withstand against an earthquake.

An insufficient installation could result in the unit falling, causing possible human injury.

• Install the air conditioner at a minimum height of 2.5 m from the floor.

Do not insert your hands or others into the unit while the air conditioner is operating.

CAUTION

Upon approval from the customer, install the air conditioner in a place that satisfies the following conditions.

• A place where the unit can be installed horizontally.

• A place where a sufficient servicing space can be maintained for safety maintenance and unit check.

• A place where the drain water can be exited from the unit, without causing a problem.

Avoid installing in the following places.

• Places exposed to air with a high salt content (seaside area), or places exposed to large quantities of sulfide gas (hot spring). (Should the unit be used in these places, special protective measures are needed.)

• Places exposed to oil, vapor, oil smoke or corrosive gas.

• Places where organic solvent is used nearby.

• Places close to a machine generating high frequency.

• Places where the discharged air blows directly into the window of the neighbouring house. (For outdoor unit)

• Places where the noise from the outdoor unit can be easily transmitted to the neighboring property. (When installing the air conditioner on the boundary with a neighbor, pay due attention to the level of noise.)

• Places with poor ventilation.

Installation space

Ensure there is sufficient space to install the unit and to perform maintenance work as and when required. Keep 15mm or more for clearance between top plate of the indoor unit and the ceiling surface.

Installation space

Ceiling height

Model MMU-AP

0071 to 0121 type 0151 to 0181 type

When the ceiling height exceeds the standard distance of a 4-way air discharge cassette as detailed in the following table. The air-flow may not be sufficient to heat the room. It is therefore necessary to set the unit to high ceiling mode or adjust the direction of the ceiling discharge.

For setup of the high ceiling mode, refer to the details of Applicable controls “To incorporate a filter sold separately” and “In case of installation to high ceiling” within this Manual.

Installable ceiling height list

Indoor unit capacity type

Discharge direction

Standard (At shipment)

High ceiling (2) High ceiling (3)

Installable ceiling height

Up to 2.7 m Up to 3.5 m

0071 to 0121 type 0151 type 0181 type

4-way 3-way 2-way 4-way 3-way 2-way 4-way 3-way 2-way

2.7 ——2.9 ——3.2 —— ———3.2 ——3.4 —— ———3.5 ——3.5 ——

Setup of high ceiling

Setup data

0000 0002 0003

(Unit: m)

REQUIREMENT

• When high ceiling (1) or (3) is used with 4-way blowing, a draft is easily recognized due to drop of discharge temperature.

The air filter cleaning signal duration (Notification of filter cleaning) on the remote controller can be changed according to the condition of installation.

If the room is not heated due to the installation place or construction of the room, the detection temperature of heating can be raised.

For setup method, refer to “Change of lighting term of filter sign” and “Increased heating effect” in the Applicable controls of this Manual.

595 to 660 Ceiling open dimension

Space required for

installation and servicing

200

525 Hanging bolt pitch

595 to 660 Ceiling open dimension

700 Panel external dimension

142 64 368.5

145.5

105

575 Unit external dimension

320.5

595 to 660 Ceiling open dimension

Check port

(o 450)

Bottom face of ceiling

Ceiling panel

Drain discharge port

Hanging bolt M10 or W3/8 local arrange

Wiring connection port

For 150 diameter branch duct knockout square hole

Knockout for 100 diameter fresh air intake

Electric parts box

Ø162

For 150 diameter branch duct knockout square hole

4 screw holes (For 4 mm tapping screw)

Bottom face of ceiling

Refrigerant pipe (Gas) 0151, 0181MH : Ø12.7 0071 to 0121MH : Ø9.5

Refrigerant pipe (Liquid) Ø6.4

268 27

134

145.5

220.5

1000 or more

Obstacle

1000 or more

15 or more

Drain-up standing-up size

Note)

As ABS is used for the drain discharge port of the main unit, the vinyl chloride paste cannot be used.

Use the flexible hose (Band fix) included in the package.

Stand-up

627.5

or less

Ceiling

Indoor unit

Stand-up

850 or less

300 or less

9310570

139.5

190.5

158

214 105

177

207

575 Unit external dimension

105235 235

175

149

525 Hanging bolt pitch

595 to 660 Ceiling open dimension

700 Panel external dimension

256

Ø162

142

120

97.5 42 148

200

Check port

( 450)

Check port

( 450)

120

2.7

120

• Wired remote controller (RBC-AMT31E)

SELECTION OF INSTALLATION PLACE

In case of wireless type

The wireless remote controller can be operated up to a maximum of 8 m from the infra-red receiver.

Therefore ensure that the remote controller will be mounted and used within this stated parameter.

• To prevent malfunction do not mount or operate in a location that is subjected to either a fluorescent lamp or direct sunlight.

• A maximum of 6 indoor units with wireless remote controller can be installed within the same room.

The installation of the air conditioning unit must be positioned in a location that can sufficiently support its weight and give protection against adverse environmental conditions.

Failure to do so may result in unit damage and possible human injury. Any incomplete installation may also cause possible risk of human injury.

• Unpack the package, take out the product and then place it on the floor so that the same surface directs

• Never put the products taken out from the packing box in a

Strictly comply to the following rules to prevent damage of the indoor units and human injury.

• Do not place heavy objects on the indoor unit. (Even when units are still packaged)

• Always carry the unit as packaged from the factory wherever possible.

• To move the indoor unit, hold the hanging brackets (4 positions) only.

• To be carried by two or more persons. Do not strap the unit in positions other than that stated.

8 m or less

INSTALLATION OF INDOOR UNIT

underneath as it is placed in the package.

WARNING

pile, or put other load on them; otherwise there is a possibility to damage electric parts, fan parts, draining mechanism, and etc.

If the both sides are turned over, a deformation of mounting metal of the ceiling panel which is sold separately, etc may be caused. Accordingly the product may be damaged and

OK NO GOOD

the installation becomes impossible in some cases.

REQUIREMENT

If carrying in the indoor unit unpacked by necessity, be sure to use buffering cloth, etc. to prevent damaging the unit.

Do not apply force to other parts (refrigerant pipe, drain pan, foamed parts, or resin parts etc.).

Dimensional view

Hanging bolt (W3/8 or M10)

Nut (W3/8 or M10)

(1) M10 washer supplied, all other material

must be procured locally.

(2) To ensure that the unit is mounted safely, the

hanging bolt must be positioned just below the hanging bracket as shown in the diagram.

(1) M10 flat washer (Accessory)

(2) M10 flat washer (Accessory)

Nut (W3/8 or M10)

Installation gauge 2) 10 to 42 mm

1) 23 to 28 mm

Ceiling panel

Indoor unit

INSTALLATION OF INDOOR UNIT

Ceiling opening and installation of hanging bolts

• Evaluate and determine the piping and wiring requirements inside the ceiling prior to the hanging of the unit.

• After installation place of the indoor unit has been determined, create opening in ceiling and install the hanging bolts.

• For the ceiling opening size and pitch for hanging bolts refer to the dimensional drawing and the supplied installation pattern.

• Once the ceiling void has been created, ensure that the drain pipe, refrigerant pipes, inter-connecting wires and all control wires are in place prior to installing the actual indoor unit.

Please procure the hanging bolts and nuts for installation of the indoor unit at local site.

Hanging bolt

Nut

M10 or W3/8 M10 or W3/8

4 pieces

12 pieces

How to use the supplied installation pattern

The installation pattern is enclosed within the packaging of the air conditioner.

Existing ceiling void

Use the pattern to determine the position and size of the opening and

Indoor unit

location of the hanging bolts.

New ceiling void

Use the pattern to determine the position of the new ceiling opening. Cut off slit section of the main unit of the installation pattern.

Cut off the outside of the pattern according to size of the ceiling opening. (There is a slit on the standard opening size section.)

• Install the indoor unit after installation of the hanging bolts.

• Using the supplied pattern attach it to the indoor unit using the supplied fixing screws (M5 × 16L 4off). (Screw pattern to the ceiling panel hanging brackets of the indoor unit)

• When creating the opening ensure it is as per the outer dimensions of the supplied pattern.

Installation pattern (Attached)

M5 × 16L screws (Attached) These screws are exclusive to the

installation pattern. When installing the ceiling panel, the other exclusive screws attached to the ceiling panel (sold separately) are used.)

Cut off the installation pattern along slit of the main unit.

Treatment of ceiling

The ceiling differs according to the structure of the building. For details, consult your architect. In the process after the ceiling panels have been removed, it is important to reinforce the ceiling construction and

ensure the ceiling remains in a horizontal position. This is to prevent possible vibration of the ceiling panels.

1. Cut and remove the ceiling material.

2. Reinforce the cut surface of the ceiling construction and add support for fixing the end of ceiling panel.

Installation of hanging bolt

Use M10 hanging bolts (4 off, locally procured). When mounting the unit, set the pitch of the hanging bolts according to the size of the unit as detailed on the

dimensional drawing.

New concrete slab

Install the bolts with insert brackets or anchor bolts.

(Blade type

bracket)

(Slide type

bracket)

(Pipe hanging

anchor bolt)

Anchor bolt

Reinforcing steel

Steel flame structure

Use existing angles or install new support angles.

Hanging bolt

Hanging bolt Support angle

Existing concrete slab

Use a hole-in anchors, hole-in plugs, or a hole-in bolts.

Installation of indoor unit

• Attach the nut (M10 or W3/8: Procured locally) and washer (Ø34 mm) to the hanging bolt.

• Put washers at either side of the T-groove on the hanging bracket of the indoor unit in order to hang the unit.

• Using a spirit level, check that all four sides are horizontal. (Horizontal positioned within 5 mm)

• Cut off the installation gauge from the installation pattern.

• Using the installation gauge check and adjust clearance between the indoor unit and the ceiling opening (1) (10 to 42 mm on each side). Ensure that the unit is level to the ceiling and within a distance of (2) 23 mm to 28 mm below. The installation gauge has details of how to use printed on it.

Note) Install the indoor unit so that the end part of opening does not

come into contact with the drain socket piping.

Level vial (Horizontal: within 5 mm)

Indoor unit

Hanging metal

10 to 42

Installation gauge

Before installation of the indoor unit be sure to remove the transportation cushion found between the fan and the bell mouth. Running the unit without removing the cushion may damage the fan motor.

Hanging bolt

23 to 28 mm (1)

mm (2)

Ceiling board

REQUIREMENT

Installation of ceiling panel (Sold separately)

Install the ceiling panel after completion of the installation of the indoor unit, including all piping and wiring.

Install the ceiling panel as per the supplied Installation Manual.

Check the installation dimensions of the indoor unit and the ceiling opening are correct and then install.

REQUIREMENT

Ensure the ceiling panel is mated to the ceiling surface or the indoor unit.

If the panel and unit are not mated together this may result in the formation of dew condensation causing a possible water leak.

Be sure to remove the cushion for transportation between the fan and the bell mouth.

First remove the 4 corner caps from the ceiling panel and fit to the indoor unit.

Installation of remote controller (Sold separately)

For installation of the wired remote controller, follow the Installation Manual supplied with the remote controller.

• Do not expose remote controller to direct sunlight or excessive heat.

• When using a wireless type remote controller check receiver on the indoor unit receives a signal.

• For a wireless type controller ensure that it is used and mounted a minimum distance of 1m apart from any other electrical devices (TV, Stereo, etc). As this may cause interference with the devices.

Rising up

627.5mm or less

Rising up 850mm or less

300mm or less

Indoor unit

Underneath of ceiling

220–240V, 1N ~, 50Hz 220V 1N ~, 60Hz

White

Black

CN34 (RED)

Black

Red

Pull out connector CN34 (Red) from P.C. board.

R(L) S(N)

DRAIN PIPING WORK

CAUTION

• Install the drain piping so that the water drains effectively.

• Apply heat insulation to prevent dew condensation from forming.

Pipe material/Insulator and size

The following materials for piping work and insulation are to be procured locally.

Pipe material

• Incorrectly installed pipe work may result in a water leak.

Insulator

REQUIREMENT

• Ensure insulating of the drain pipes and connecting parts on the indoor units.

• The drain pipe should have a downward slope of at least 1/100 and ensure there are no swells or blockages as this will cause abnormal sounds.

• The maximum traverse length of drain pipe is 20 m. Provide support brackets at intervals of 1.5 to 2 m where necessary to prevent movement.

• Install the combined piping as shown in the illustration.

• Do not create an air purge in the pipework, as the water would leak from this point.

(Collective pipes)

• The hard vinyl-chloride pipe cannot be connected directly to the drain pipe connecting port of the indoor unit. For connection with the drain pipe connecting port, ensure that the supplied flexible hose is fitted.

• Adhesive agent cannot be used for the pipe connecting port (hard socket) on the indoor unit.

Be sure to use the supplied hose band for fixing, otherwise there is a risk of damage or water leakage from the drain pipe connecting port.

As long as possible (10cm)

VP25

VP30 or more

Drain pipe connecting port (Hard socket)

Attached hose band

Soft socket Hard socket

Adhesive agent prohibited

Hard vinyl chloride pipe socket for VP25 Hard vinyl chloride pipe VP25

(Outer diameter Ø32 mm) Foamed polyethylene foam, thickness:

10 mm or more

Heat insulator

1.5m to 2m

1/100 or more downward

Arched shape

Support bracket

GOOD

Tra p

VP25

Downward slope 1/100 or more

VP25 vinyl chloride pipe (Procured locally)

Attached flexible hose

Socket for VP25 (Procured locally)

Connection of drain pipe

• Connect the hard socket (Procured locally) to the hard socket side of the supplied flexible hose which has been installed.

• Connect the drain pipes (Procured locally) in turn to the connected hard sockets.

REQUIREMENT

• Using an adhesive agent for vinyl chloride,

connect the hard vinyl chloride pipes so that water does not leak.

• Allow sufficient time for the adhesive to set and

harden. (Refer to the instructions of the adhesive.)

Drain up

When it is not possible to achieve a natural downward slope on the drain pipe, you can create a vertical lift (Drain up) on the pipe.

• Set the height of the drain pipe within 850 mm from the bottom surface of the ceiling.

• The drain pipe should be piped from the drain pipe connecting port horizontally for a maximum of 300 mm and then piped vertically.

• After piping the vertical lift, ensure the pipe work is set to a downward gradient.

Check the draining

After completion of drain piping, Check water drains away and that no water leaks from

any of the connecting parts. At the same time check for any abnormal sounds from the drain pump.

Ensure drainage is checked during cooling mode.

When the electric work has finished:

• Before installing the ceiling panel, pour water as shown in the following figure, check water drains from the drain pipe connecting port (Transparent) in COOL mode and then check there are no water leaks from the drain pipes.

When the electric work has not finished:

• Pull out the float switch connector (3P: Red) from P.C. board connector (CN34: Red) of the electric parts box. (Ensure the power is turned off.)

• Connect the single-phase 220-240V, 1N, 50Hz (or 220V, 1N, 60Hz) power to the terminal blocks R (L) and S (N). (Never apply 220-240V to (A), (B), (U1) and (U2).)

• Pour water referring to the next page figure. (Amount: 1500 cc to 2000 cc)

• When the power is turned on, the drain pump motor drives automatically. Check water is drained from the drain pipe connecting port (Transparent), and then check there is no water leak from the drain pipes.

• After checking for water leaks on the drain, turn off the power supply, and re-attach the float switch connector to the original position (CN34) on the P.C. board and refit the electric parts box.

Connection of flexible hose

• Insert the soft socket of the supplied flexible hose into the connecting port of the drain pipe.

• Align the supplied hose band to the pipe connecting port end, and tighten.

• Fix the soft socket with the supplied hose

band, tighten at the upper position of the unit.

• The supplied flexible hose can bend up to

a maximum of 45°

REQUIREMENT

Drain pipe connecting port (Transparent)

Indoor unit body

max

45˚

NO GOOD

max

45˚

Align the attached hose band to the end of hose, set the tightening position upward, and then tighten it.

Flexible hose (Accessory)

VP25 vinyl chloride pipe (To be local procure)

Socket for VP25 vinyl chloride pipe (To be local procure)

Riser (Trap)

90˚ Bend

90˚

Obliquity Roughness Warp

NO GOODOK

DRAIN PIPING WORK

REFRIGERANT PIPING

Thermal insulating process

• After checking of the draining, using the supplied thermal insulation fit to the flexible hose leaving no clearance at the connecting port of the indoor unit.

• Fit locally procured thermal insulation to the drain pipe leaving no clearance between the supplied insulation.

Flexible hose

Attached heat insulator

Check panel

Hose band

Heat insulator to be procured locally

Hard vinyl chloride pipe

CAUTION

Ensure water is poured slowly.

To reduce risk of water spreading throughout the unit, resulting in a possible fault.

Air

discharge area

Drain pan

WARNING

• If refrigerant gas leaks during the installation work, ventilate the room immediately.

• If the leaked refrigerant comes in contact with fire, noxious gas may generate.

• After the installation work, confirm that refrigerant does not leak.

• If refrigerant gas leaks into the room and flows near to a source of fire, noxious gas may be generated.

REQUIREMENT

When using long length of refrigerant piping. Provide support brackets at intervals of 2.5 m to 3 m. If the pipes are not fixed abnormal sounds may be generated.

Ensure the supplied R410A flare nuts are used.

Permissible pipe length and permissible height difference

This differs depending on the outdoor units. For details, refer to the Installation Manual supplied with the outdoor unit.

Piping material and dimensions

Piping material

Indoor unit capacity type MMU-

Pipe size (mm)

• Use new and clean pipe, ensuring that the pipes are not contaminated with dust, oil, moisture, etc.

Gas side Liquid side

Pipe flaring

Phosphor deoxidization seamless pipe for air conditioner

AP0071 to AP0121 type AP0151 to AP0181 type

Ø9.5 Ø12.7 Ø6.4 Ø6.4

Insert the leading part of the hose between the heat exchanger and the drain pan, and then bend it downward.

Polyethylene hand pump for pouring water in drain pan

Vessel

Water (1500cc to 2000cc)

Flaring

1. Cut the pipe with a pipe cutter.

2. Place flare nut onto the pipe, and flare the pipe. (Use the flare nut fitted to the unit or one that is R410A compatible)

As the flaring sizes of R410A differ from that used on R22. It is recommended to use a dedicated R410A flaring tool. However a conventional flare tool can be used, by adjustment of the projection of the copper pipe.

• Flaring diam. meter size : A (Unit : mm)

Outer diam. of copper pipe

6.4

9.5

12.7

15.9

In case of flaring for R410A with the conventional

flare tool, make a margin of 0.5 mm longer than that of R22 pipe so that the flare size matches with the specified size.

The copper pipe gauge is useful for adjusting the projection margin size.

- 0.4

R410A

9.1

13.2

16.6

19.7

REFRIGERANT PIPING

ELECTRIC WORK

• Projection margin in flaring : B (Unit : mm)

Rigid (Clutch type)

Outer diam. of

copper pipe

6.4

9.5

12.7

15.9

Imperial (Wing nut type)

Outer diam. of copper pipe

R410A tool used

R410A R22

0 to 0.5 (Same as left) 0 to 0.5 (Same as left) 0 to 0.5 (Same as left) 0 to 0.5 (Same as left)

6.4

9.5

12.7

15.9

Conventional tool used

R410A R22

1.0 to 1.5 0.5 to 1.0

R410A R22

1.5 to 2.0 1.0 to 1.5

2.0 to 2.5 1.5 to 2.0

Connection of refrigerant pipe

Connect all the refrigerant pipes with the flare connection method

• As the unit is sealed to atmospheric pressure.

It is not abnormal that no “Push....” sound will be

heard upon the removal of the flare nut.

• Ensure use of two spanners for the connecting of the pipe work to the indoor unit.

Airtight test/Air purge, etc.

For carrying out airtight test, air purge, gas leak check and addition of refrigerant refer to the Installation Manual supplied with the outdoor unit.

Open fully valves of the outdoor unit

Gas leak check

Using a leak detector or soapy water, check for gas leaks at the connecting pipe work and the caps on the service valves.

REQUIREMENT

Use a leak detector designed specifically for HFC refrigerant (R410A, R134a, etc.).

Heat insulating process

Fit heat insulation to the gas and liquid pipes separately.

During cooling mode, the temperature of the liquid and the gas pipes are reduced. Therefore ensure sufficient insulation is fitted to prevent dew condensation.

• On the gas side ensure that the heat insulation used is heat resistant to a minimum temperature of 120°C

• Using the supplied heat insulation. Insulate the interconnecting parts of the indoor unit, ensuring that there is no exposure of any refrigerant pipe work. As detailed in the illustration below.

REQUIREMENT

Apply the thermal insulation to the pipe connecting section of the indoor unit securely up to the root without exposure of the pipe. (The pipe exposed to the outside causes water leak.)

WARNING

1. Using the specified wires, ensure the wires are connected and securely fixed so that no external force can transmit to the connecting part of the terminals.

Poor connection may cause risk of fire, etc.

2. Ensure connection of earth wire. (Grounding work)

Do not connect the earth wire to a gas pipe, mains water pipe, lightning rod, or the earth wire of a telephone. Incorrect earthing will cause risk of an electric shock.

3. For electrical installation work, strictly follow the Local and national Regulations of each country and the Installation Manual. A designated power supply must be used.

Capacity shortage of the power supply or incomplete installation may cause an electric shock or a fire.

CAUTION

Ensure an earth leakage breaker is installed.

Failure to install, may result in an electric shock.

REQUIREMENT

• For power supply wiring, strictly conform to the Local authorities in each country.

• For wiring of the power supply of the outdoor units, follow to the outdoor unit Installation Manual.

• Never connect 220–240V control wiring to the terminal blocks (U1, U2, A, B) fault will be. (Caused.)

• Arrange the electrical wiring so that they do not come into contact with high-temperature parts of the pipe

work; this is to prevent the risk of insulation melting and causing a possible accident.

• After connecting wires to the terminal block. Secure wiring with cable clamp.

• Store wiring install control wiring and refrigerant piping within the same line.

• Do not turn on power of the indoor unit until vacuuming of the refrigerant pipe has finished.

Work using double spanner

• Refer to the following table for tightening torque.

Connecting pipe

outer dia. (mm)

Ø6.4

Ø9.5

Ø12.7

Ø15.9

Tightening torque

(N•m)

14 to 18

(1.4 to 1.8 kgf•m)

33 to 42

(3.3 to 4.2 kgf•m)

50 to 62

(5.0 to 6.2 kgf•m)

68 to 82

(6.8 to 8.2 kgf•m)

Re-tightening

torque (N•m)

(1.8 kgf•m)

(4.2 kgf•m)

(5.0 kgf•m)

(6.8 kgf•m)

Main unit

Attached heat insulating pipe

Set notching upward.

Pipe side (Required at the site)

P.C. board

Cover of electric parts box

Hooking section

Screw

Screws

Electric parts box

Thermal insulation to cabling connecting port

(L)

(N)

Earth line

Connecting cord

R(L) S(N)

Cord clamp Heat insulator B

Heat insulator A

Indoor/Outdoor crossover cable/ Remote controller terminal block

Power supply terminal block

U1U2A B

Adhered surface

Notched section

ELECTRIC WORK

Power supply specifications

Power supply wiring and communication wiring are to be procured locally. For the power supply specification, follow the table below. Ensure power supply is adequate. An insufficient power

supply could result in unit failure. For specification of the power capacity of the outdoor unit and the power supply wires, refer to the Installation

Manual supplied with the outdoor unit.

Indoor unit power supply (*1)

Communication line

Indoor unit power supply (*1)

• Indoor unit power supply, must have a dedicated supply and be separate to that of the outdoor unit.

• Arrange the power supplies to the indoor and outdoor units, so that a common earth leakage breaker and main switch can be used.

• Power supply cable specification : Cable 3-core 2.5 mm², in conformity with Design 60245 IEC 57.

Indoor/Outdoor inter-unit wiring, Central controller wiring (*2) (*3)

• Use a 2 core non polarity cable.

• To prevent any possible noise issues, use a shielded 2 core wire.

• The total stated length of communication wiring is determined by the interconnecting length of indoor to outdoor cable plus the length of the central control communication cable.

Remote controller wiring (*4)

• For wiring remote controllers, a 2 core polarity cable must be used.

Remote controller wiring, remote controller inter-unit wiring

Total wire length of remote controller wiring and remote controller inter-unit wiring = L + L1 + L2 + … Ln

Total wire length of remote controller inter-unit wiring = L1 + L2 + … Ln

Remote controller wiring

Power supply Power supply switch/Earth leakage breaker or power supply wiring/fuse rating for indoor

units should be selected by the accommodated total current values of the indoor units. Power supply wiring

Indoor/Outdoor inter-unit wiring (*2)

Central control line wiring (*3)

Remote controller wiring (*4)

Indoor unit

Remote

controller

20 m or less Twist wire : 2.5 mm² 50 m or less Twist wire : 3.5 mm² Q’ty 2

Wire size Q’ty 2 Wire size Q’ty 2

Wire size Twist wire : 0.5 to 2.0 mm²

Twist wire: 0.5mm

In case of wired type only In case of wireless type included

Indoor unit

L1 L2 Ln

Remote controller inter-unit wiring

to 2.0 mm2 × 2

Up to 500 m Up to 400 m Up to 200 m

Indoor unit Indoor unit

220–240V, 1N ~ 50Hz

220V, 1N ~ 60Hz

(Up to 1000 m) Twist wire : 1.25 mm² (Up to 2000 m) Twist wire : 2.00 mm²

CAUTION

The remote controller wire (Communication line) and AC220– 240V (Power supply) wires cannot be parallel to contact each other and cannot be stored in the same conduits. If doing so, a trouble may be caused on the control system due to noise, etc.

(Max. 8 units)

Cable connection

REQUIREMENT

• Be sure to locate the cable through the cable connection port of the indoor unit.

• Ensure additional wire length of approximately 100 mm at the indoor unit electric parts box. This is to enable ease of any service work in the future.

• The low-voltage circuit is provided for the remote controller.

• Remove the cover of the electric parts box by removing the mounting screws (3 pcs.) and push the hooking section. (The cover of the electric parts box remains hanged to the hinge.)

• Tighten the screws on the terminal block and secure the cables with cord clamp fitted to the electric parts box. (Do not apply tension to the connecting section of the terminal block.)

• Using the supplied thermal insulation for the sealing of the cable connecting port, seal the cable connecting port. (Otherwise dew condensation may be caused.)

• Mount the cover of the electric parts box ensuring the cables are not pinched. (Mount the cover after the ceiling panel has been wired to the electric box.)

ON / OFF

FAN

TEMP.

SWING/FIXTIME

MODE

VENT

UNITSET CL

FILTER RESET

TEST

TIMER SET

CODE No.

UNIT No.

R.C. No.

3 5

6 6

CODE No.

UNIT No.

R.C. No.

∗

∗∗

∗

∗∗∗∗∗

CODE No.

UNIT No.

SETTING

R.C. No.

ELECTRIC WORK

APPLICABLE CONTROLS

Remote controller wiring

• Strip approximately 14 mm of insulation off of the connecting wires.

• As the remote controller wire has no polarity, there is no problem if connections to indoor unit terminal blocks A and B are reversed.

Wiring diagram

Terminal block for remote controller wiring of indoor unit

A B

Remote controller wire (Field supply)

Terminal block

A B

Remote controller unit

When using the equipment for the first time, the remote controller will not accept any commands for a short period of time.

• Automatic address

• While automatic addressing no operations can be performed on the remote controller.

• Automatic addressing will take a maximum duration of 10 minutes (generally 5 minutes).

• Upon turning on the unit after completion of automatic addressing, a maximum period of 10 minutes (generally 3 minutes) are required prior to the start up operation of the outdoor unit.

All indoor units are shipped from factory as standard. Change if necessary.

NOTIFICATION

To change the setup use the main remote controller (wired remote controller).

Wiring between indoor and outdoor units

Outdoor power supply

Follower outdoor unit

U2U1 A B

Remote

controller

U1U2 U3 U4U5 U6

Indoor unit

Earth

Control wiring between outdoor units

Control wiring between indoor units

Indoor unit

Earth

LN U2U1 A B

Pull box

NOTE

An outdoor unit that is inter-connected to the indoor units automatically becomes the header unit.

Connection of shield wire closed terminal

Indoor unit

LN U2U1 A B

Remote controller

[Group control]

Pull box

Earth

Indoor power supply 220-240V, 1N ~50Hz 220V, 1N ~60Hz

Earth leakage

breaker

Power switch

Outdoor power supply

Earth

Indoor unit

Earth

Pull box

Header outdoor unit

U1U2 U3 U4U5 U6

Control wiring between indoor and outdoor units

U2U1 A B

Remote

controller

Address setup

Set up the addresses as per the Installation Manual supplied with the outdoor unit.

Wiring on the ceiling panel

As per the Installation Manual of the ceiling panel, connect the connector (2P: Red) of the ceiling panel to the connector (5P: White) onto the P.C. board within the electric parts box.

Cord Clamp

5P connector (White)

Wire from ceiling panel

* The setup change for wireless remote controller, sub remote controller or a unit without a controller (Centrally

controlled.) is not possible. In such cases, temporarily install a separate main remote controller.

Applicable control setup

Basic operation procedure for setup change

Change the setup while operation of the equipment is stopped. (Be sure to stop the operation of a set.)

Procedure

2 3

SET

Push the as shown in the figure.

Check that the displayed item code is [10].

• If the item code indicates any characters other than [10], push the button to erase the display and retry the operation from the first step. (For some time after the of the remote controller cannot be accepted.)

(In a group control, the firstly displayed indoor unit No. becomes the center unit.)

Each time the Select the indoor unit that requires a change to the setup. During this time the indoor unit that is selected can be

confirmed as the louver and fan will be operated.

TEMP.

Using

Using the

SET

Push the complete.

• To change the setup of an indoor unit that is not selected, restart operation from Procedure

• To change to a different setup within the selected indoor unit, restart operation from Procedure

Pushing the When the setup is finished, push the

Pushing the normal stopped status.

(For a period of time after the controller will not accept any commands.)

TES

, CL and

TIME

button. During this time, if the display changes from flashing to permanently on, the setup is

TES

buttons simultaneously for 4 seconds or more, after a while, the display part flashes

TES

button has been pushed, the operation

UNIT

button is pushed, the indoor unit No. in the group control is displayed consecutively.

the buttons, select the item code [**].

buttons, select set data [

button clears the set up contents which has been set. In this case, restart from Procedure 2.

button deletes the display and returns the status to the

TES

button has been pushed, the remote

Description

TES

(* The display changes according

****

button. (The setup is configured.)

to the indoor unit model.)

APPLICABLE CONTROLS

In case of installation to high ceiling

When the unit is to be installed at a height that exceeds the standard value, adjustment to the air volume is necessary.

• For the “Setup data” in Procedure

, select from the “Installable ceiling height list”.

Installable ceiling height list

Indoor unit capacity type

Discharge direction

Standard (At shipment)

High ceiling (2) High ceiling (3)

0071 to 0121 type 0151 type 0181 type

4-way 3-way 2-way 4-way 3-way 2-way 4-way 3-way 2-way

2.7 ——2.9 ——3.2 —— ———3.2 ——3.4 —— ———3.5 ——3.5 ——

Setup of high ceiling

Setup data

0000 0002 0003

(Unit: m)

In case of remote controller-less (Group control)

To set the unit to high ceiling operation, there is a method that requires the changing of the short plugs on the indoor P.C. board. The details are shown in the below table.

This method is only to be used where a standard wired remote controller (Group control) is not used. ∗ Upon changing the high ceiling setting

• Select setting by the changing of the short plugs on the indoor P.C. board.

Short plug position

Short

CN112 CN111 CN110

Open

Set

data

0000

0003

Filter sold separately

Standard filter (At shipment)

High ceiling (3)

• Short plug position (CN112, CN111, CN110 from the left)

Change of lighting time of filter sign

Depending on the conditions of the installation, the time period of the filter clean sign can be changed.

Follow to the basic operation procedure

→ 2 → 3 → 4 → 5 → 6 ).

(

• For the item code in Procedure

• For the [Set data] in Procedure

, specify [01].

, select the setup data of filter sign lighting time from the following table.

Setup data

0000 0001 0002 0003 0004

Filter sign lighting time

None 150H 2500H (At shipment from factory) 5000H 10000H

Increased heating effect

If it is not possible to achieve satisfactory heating due to the installation environment or the structure of the room. The detected temperature can be increased. Also use a circulator, etc to circulate hot air near the ceiling.

Follow to the basic operation procedure

→ 2 → 3 → 4 → 5 → 6 ).

(

• For the item code in Procedure

• For the set data in Procedure data of the required temperature shift value from the table below.

Setup data

0000 0001 0002 0003 0004 0005 0006

Detection temp shift value

+1°C +2°C (At shipment from factory) +3°C +4°C +5°C +6°C

, specify [06].

, select the setup

No shift

Group control

In a group control, a remote controller can control up to a maximum of 8 units.

• For cabling procedure and cables of the individual line (Identical refrigerant line) system, refer to “Electric work” in this Manual.

• Wiring between indoor units in a group is performed in the following method.

Connect the indoor units by connecting the remote controller inter-unit cables from the remote controller terminal blocks (A, B) of the indoor unit connected with a remote controller to the remote controller terminal blocks (A, B) of the other indoor unit. (No polarity)

• For address setup, refer to the Installation Manual supplied with the outdoor unit.

Receiver unit

M4 × 25 screw (2 pieces)

Small screw

Spacer

Notch

Nameplate

TEST RUN

Before test operation

• Before turning on the power supply, carry out the following procedures.

1) Using 500V-megger, check there is 1MΩ or more between the

terminal block of the power supply and the earth. If 1MΩ or less is detected, do not run the unit.

2) Check that all the valves of the outdoor unit are fully opened.

• Never push the electromagnetic contactor to carry out a forced test operation. (It is very dangerous because a protective device does not work.)

To protect the compressor at startup. Ensure the power supply is left on for 12 or more hours before operation.

WARNING

How to execute test operation

• To carry out a fan operation in a single indoor unit, firstly turn off the power supply to the unit. Then short CN72 found on the P.C. board. Once completed turn the power to the unit back on and start the unit in FAN only mode. Upon completion of the test do not forget to remove the short circuit on CN72.

• Using the remote controller, check the unit is in normal operation. For the operation procedure, refer to the supplied Owner’s Manual. A forced test operation can be executed in the following procedure under the condition of thermo.-OFF of room temperature. In order to prevent the test operation from running continuously, the operation will cease after a period of 60 minutes. The unit will then return back to its original operation.

NOTE

Do not use a forced operation in cases other than test operation because it applies an excessive load onto the air conditioner.

In case of wired remote controller

Procedure

1, 5

Description

FILTER RESET

TEMP.

TEST

TIMER SET

ON / OFF

2, 4

FAN

MODE

SWING/FIXTIME

VENT

UNITSET CL

In case of wireless remote controller

Procedure

Remove a small screw which fixes the nameplate of the receiver unit. Remove the nameplate of the sensor section by inserting a minus screwdriver, etc into the notch at the bottom

of the plate, and set the Dip switch to [TEST RUN ON].

Execute a test operation with button on the wireless remote controller.

, , and LED flash during test operation.

•

• Under status of [TEST RUN ON], the temperature adjustment from the wireless remote controller is invalid. Do not use this method in the operation other than test operation because the equipment is damaged.

Use either COOL or HEAT operation mode for a test operation.

* The outdoor unit does not operate approx. 3 minutes after power-ON and operation stop.

After the test operation finished, stop the air conditioner from the wireless remote controller, and return Dip switch of the receiver section as before.

(A 60-minutes timer clearing function is attached to the receiver section in order to prevent a continuous test operation.)

Description

TES

Keep the [TEST] is displayed on the display part and the selection of the test mode is

permitted.

Push

Using

• Do not run the air conditioner in a mode other than [COOL] or [HEAT].

• The temperature controlling function will not work during the test operation.

• Fault detection will perform as usual. After the test operation, push the

(Display part is the same as procedure

Push the ([TEST] disappears on the display part and the status returns to normal.)

button pushed down for 4 seconds or more.

ON / OFF

button.

MODE

button, select the operation mode, [COOL] or [HEAT].

ON / OFF

button to stop the operation.

)

TES

button to cancel (release from) the test operation mode.

TEST

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