9.ceiling mounted duct type packaged air-conditioner ()mhi.by/docs/fdur-h-1.pdf · 9.ceiling...

267

9. CEILING MOUNTED DUCT TYPEPACKAGED AIR-CONDITIONER

Split system, Air to airheat pump type

FDUR208HEN-SA FDUR308HEN-A258HEN-SA 308HES-A308HEN-SB 408HES-A308HES-SB 508HES-A408HES-SB508HES-SB

( )

267

268

CONTENTS

9.1 GENERAL INFORMATION ........................................................................ 269

9.1.1 Specific features ................................................................................. 269

9.1.2 How to read the model name............................................................. 269

9.2 SELECTION DATA .................................................................................... 270

9.2.1 Specifications ..................................................................................... 270

9.2.2 Range of usage & limitations ............................................................ 280

9.2.3 Exterior dimensions ........................................................................... 281

9.2.4 Exterior appearance ........................................................................... 289

9.2.5 Piping system ..................................................................................... 290

9.2.6 Selection chart .................................................................................... 293

9.2.7 Characteristics of fan ......................................................................... 296

9.2.8 Noise level ........................................................................................... 297

9.3 ELECTRICAL DATA .................................................................................. 299

9.3.1 Electrical wiring .................................................................................. 299

9.4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............. 306

9.5 APPLICATION DATA ................................................................................. 322

9.5.1 Installation of indoor unit .................................................................. 323

9.5.2 Installation of remote controller........................................................ 329

9.5.3 Installation of outdoor unit ................................................................ 330

9.6 MAINTENANCE DATA............................................................................... 340

269

Example: FDUR 30 8 H EN-SB

9.1 GENERAL INFORMATION9.1.1 Specific features(1) Less refrigerant charge amount due to use of double phase refrigerant flow system. The total refrigerant charge amount has been

reduced by more than 50%.

(2) The indoor outdoor interconnection signal wiring has been done away with. The microcomputer chip is installed in the indoor unit.

There is no need for the unit to communicate between the outdoor and indoor units so the unit is more resistant to electromagnetic

noise thus the incidence of microcomputer malfunction has been reduced. The compressor in the outdoor unit has its own self

protection function, that reacts according to abnormal high pressure and excessive high temperature.

(3) There are only five power lines between the outdoor and indoor unit, As no signal wire is used there is no need to separate the

power line from the signal line. One cabtyre cable with 6 wires encased in one sheath is enough for conducting the wiring work

between the outdoor unit and the indoor unit. This contributes to simpler wiring work in the field.

(4) All models have service valves protruding from the outdoor unit for faster flare connection work in the field.

(5) The position of the suction port can be changed.

The suction from the lower inlet is available by replacing the duct connecting section (at the side face) and the lower plate. (They

are changed on site.)

9.1.2 How to read the model name

Applicable power source ... See the specifications

Heat pump type

Series No.

Product capacity

Model name FDUR: Ceiling mounted duct type

FDC: Outdoor unit

270

ItemModel

FDUR208-A FDC208HEN3ANominal cooling capacity(1) W 5000

Nominal heating capacity(1) W 5400

Power source 1 Phase, 220/240V, 50Hz

Cooling input kW 2.09/2.21

Running current (Cooling) A 9.8/9.8

Power factor (Cooling) % 97/94

Heating input kW 1.82/1.87

Running current (Heating) A 8.5/8.2

Power factor (Heating) % 97/95

Inrush current (L.R.A) A 44

Noise level dB(A) Hi: 40 Lo: 36 52

Exterior dimensionsmm 295 × 850 × 650 690 × 880 × 290

Height × Width × Depth

Net weight kg 39 49

Refrigerant equipment– RM5523GNE4 × 1

Compressor type & Q’ty

Motor kW – 1.7

Starting method – Line starting

Heat exchanger Louver fins & inner grooved tubing Slitted fins & bare tubing

Refrigerant control Capillary tube

Refrigerant R22

Quantity kg – 0.98 [Pre-charged up to the piping length of 0m]

Refrigerant oil r – 0.7 (BARREL FREEZE 32SAM)

Defrost control MC controlled de-icer

High pressure control High pressure switch

Air handling equipment

Fan type & Q’tyMultiblade centrifugal fan × 2 Propeller fan × 1

Motor W 90 × 1 55 × 1

Starting method Line starting Line starting

Air flow (Standard) CMM Hi:17 Lo:13.5 56

Available static pressurePa Standard: 50, Max: 85 –

Fresh air intake – –

Air filter, Q’ty Polypropylene net ×1(washable) –

Shock & vibration absorber Rubber sleeve (for fan motor) Rubber mount (for compressor)

Electric heater W – 20 (Crank case heater)

Operation control Wired remote control switch

Operation switch (Optional : RCD-H-E) – (Indoor unit side)

Room temperature control Thermostat by electronics –

Safety equipment Internal thermostat for fan motor. Internal thermostat for fan motor.

Frost protection thermostat. Abnormal discharge temperature protection.

Installation data mmLiquid line: φ6.35 (1/4″) Gas line: φ15.88 (5/8″)

Refrigerant piping size (in)

Connecting method Flare piping

Drain hose (Connectable with VP25) –

Insulation for piping Necessary (both Liquid & Gas lines)

Accessories Mounting kit. Drain hose

Optional parts Suction grille –

Model FDUR208HEN-SA

(2) This packaged air-conditioner is manufactured and tested in conformity with the following standard. ISO-T1 “UNITARY AIR-CONDITIONERS”

(3) The operation data indicate when the air-conditioner is operated at 220/240V 50Hz.

Notes (1) The data are measured at the following conditions.

Item Indoor air temperature Outdoor air temperatureStandards

Operation DB WB DB WB

Cooling 27˚C 19˚C 35˚C 24˚C

Heating 20˚C – 7˚C 6˚CISO-T1, JIS B8616

Op

erat

ion

dat

a(3)

FDUR208HEN-SA

9.2 SELECTION DATA9.2.1 Specifications

271

ItemModel

FDUR258-A FDC258HEN3ANominal cooling capacity(1) W 5700













Net weight kg 40 55

Refrigerant equipment– RM5526GNE4 × 1


Motor kW – 1.9




Refrigerant R22







Motor W 130 × 1 55 × 1


Air flow (Standard) CMM Hi:21 Lo:17 56







Operation switch (Optional : RCD-H-E) – (Indoor unit side)











Model FDUR258HEN-SA

(2) This packaged air-conditioner is manufactured and tested in conformity with the following standard. ISO-T1 “UNITARY AIR-CONDITIONERS”






Heating 20˚C 12˚C 7˚C 6˚CISO-T1, JIS B8616

Op

erat

ion

dat

a(3)

FDUR258HEN-SA

272

Model FDUR308HEN-SB

ItemModel

FDUR308-A FDC308HEN3BNominal cooling capacity(1) W 7100











Exterior dimensionsmm 295 × 850 × 650 845× 880× 340


Net weight kg 40 74

Refrigerant equipment– GT-A5534EN41 × 1


Motor kW – 2.5


Heat exchanger Louver fines & inner grooved tubing Slitted fins & bare tubing


Refrigerant R22







Motor W 230 × 1 55 × 1


Air flow (Standard) CMM Hi: 25 Lo: 20 58



Air filter, Q’ty Polypropylene net × 1 (washable) –


Electric heater W – 33(Crank case heater)


Operation switch (Optional: RCD-H-E) – (Indoor unit side)











(2) This packaged air-conditioner is manufactured and tested in conformity with the following standard.

ISO-T1 “UNITARY AIR-CONDITIONERS”







Op

erat

ion

dat

a(3)

FDUR308HEN-SB

273





ItemModel

FDUR308-A FDC308HES3BNominal cooling capacity(1) W 7100Nominal heating capacity(1) W 7800Power source 3 Phase, 380/415V 50Hz










Height × Width × DepthNet weight kg 40 74Refrigerant equipment

– GT-A5534ES41 × 1Compressor type & Q’ty

Motor kW – 2.5Starting method – Line starting



Refrigerant R22Quantity kg – 1.4 [Pre-charged up to the piping length of 5m]

Refrigerant oil r – 1.45 (BARREL FREEZE 32SAM)Defrost control MC controlled de-icer


Air handling equipmentFan type & Q’ty

Multiblade centrifugal fan × 2 Propeller fan × 1

Motor W 230 × 1 55 × 1Starting method Line starting Line starting

Air flow (Standard) CMM Hi: 25 Lo: 20 58Available static pressure

Pa Standard: 50, Max 130 –








Safety equipment Internal thermostat for fan motor. Internal thermostat for fan motor. nternal

thermostat for fan motor. Frost protection thermostat. Abnormal discharge temperature protection.


Refrigerant piping size (in)Connecting method Flare piping





Op

erat

ion

dat

a(3)

Model FDUR308HES-SB





FDUR308HES-SB

274

ItemModel












– GU-A5550ES41 × 1Compressor type & Q’ty










Air flow (Standard) CMM Hi: 34 Lo: 27 70Available static pressure









Safety equipment Internal thermostat for fan motor. Internal thermostat for fan motor. Inter-

nal thermostat for fan motor. Frost protection thermostat. Abnormal discharge temperature protection.







Op

erat

ion

dat

a(3)

Model FDUR408HES-SB









FDUR408HES-SB

275

ItemModel












– GU-A5570ES41 × 1Compressor type & Q’ty










Air flow (Standard) CMM Hi: 42 Lo: 33.5 110Available static pressure









Safety equipment Internal thermostat for fan motor. Internal thermostat for fan motor. Inter-

nal thermostat for fan motor. Frost protection thermostat. Abnormal discharge temperature protection.







Op

erat

ion

dat

a(3)

Model FDUR508HES-SB









FDUR508HES-SB

276

Model FDUR308HEN-A

ItemModel

FDUR308-A FDC306HEN3Nominal cooling capacity(1) W 7100













Net weight kg 40 69

Refrigerant equipment– RC5532ENE1 × 1


Motor kW – 2.24


Heat exchanger Louver fines & inner grooved tubing Slitted fins & bare tubing


Refrigerant R22


Refrigerant oil r – 1.63 (SUNISO 3GS)

Defrost control IC controlled de-icer

High pressure control High pressure regulator valve



Motor W 230 × 1 60 × 1


Air flow (Standard) CMM Hi: 25 Lo: 20 54









Safety equipment Internal thermostat for fan motor.

Frost protection thermostat.
















Op

erat

ion

dat

a(3)

FDUR308HEN-A

Internal protector for compressor.Internal thermostat for fan motor.Internal pressure relief valve for compressor.

277

ItemModel

FDUR308-A FDC306HES3Nominal cooling capacity(1) ISO-T1

W7100/7700

ISO-T3 6000Nominal heating capacity(1) ISO-T1 W 7300/7900Power source 3 Phase, 380-415V 50Hz, 380V 60Hz

Cooling input kW 3.20/3.30/3.8

Running current (Cooling) A 6.6/6.7/7.8

Power factor (Cooling) % 74/69/74

Heating input kW 2.83/2.96/3.33

Running current (Heating) A 6.17/6.33/7.37

Power factor (Heating) % 70/65/69

Cooling input kW 4.05

Running current (Cooling) A 8.3

Power factor (Cooling) % 74





– RC5538ESE1 × 1Compressor type & Q’ty





Refrigerant oil r – 1.63 (SUNISO 3GS)Defrost control IC controlled de-icer





Air flow (Standard) CMM Hi: 25 Lo: 20 54/56Available static pressure

















Op

erat

ion

dat

a(3)

Model FDUR308HES-A

ISO

-T1

ISO

-T3





Cooling 29˚C 19˚C 46˚C 24˚C ISO-T3, SASO



(3) The operation data indicate when the air-conditioner is operated at 380V 50Hz/415V 50Hz/380V 60Hz.


FDUR308HES-A


278

ItemModel


W10200/11300

























Air flow (Standard) CMM Hi: 34 Lo: 27 100/110Available static pressure

















Op

erat

ion

dat

a(3)

Model FDUR408HES-A

ISO

-T1

ISO

-T3










FDUR408HES-A


279

ItemModel


W12500/14000

























Air flow (Standard) CMM Hi: 42 Lo: 33.5 100/110Available static pressure

















Op

erat

ion

dat

a(3)

Model FDUR508HES-A

ISO

-T1

ISO

-T3










FDUR508HES-A


280

Models FDUR208~508 (FDC208~508)

9.2.2 Range of usage & limitations

ModelsFDUR208, 258 (FDC208, 258 model) FDUR308~508 (FDC308~508 model)

Item

Indoor return air temperature(Upper, lower limits)

Outdoor air temperature(Upper, lower limits)

Indoor unit atmosphere (behind ceiling)temperature and humidity

Refrigerant line (one way) length

Vertical height difference betweenoutdoor unit and indoor unit

Power source voltage

Voltage at starting

Frequency of ON-OFF cycle

ON and OFF interval

Dew point temperature: 28˚C or less, relative humidity: 80% or less

Refer to the selection chart

Max. 30m Max. 50m

Max. 10 times/h

Max. 3 minutes

Min. 85% of rating

Rating ± 10%

Max. 20m (Outdoor unit is higher) Max. 30m (Outdoor unit is higher)

Max. 15m (Outdoor unit is lower) Max. 15m (Outdoor unit is lower)

Models FDUR308~508 (FDC306~506)

Indoor return air temperature(Upper, lower limits)

Indoor unit atmosphere (behind ceiling)temperature and humidity

Refrigerant line (one way) length

Vertical height difference betweenoutdoor unit and indoor unit

Power source voltage

Voltage at starting

Frequency of ON-OFF cycle

ON and OFF interval

Dew point temperature: 28˚C or less, relative humidity: 80% or less

Refer to the selection chart

Max. 30m

Max. 10 times/h

Max. 3 minutes

Min. 85% of rating

Rating ± 10%

Max. 15m

Item

ModelsFDUR308~508 (FDC306~506 model)

Outdoor air temperature(Upper, lower limits)

281

600

(Max

.Dra

in u

p)

Air outlet

Ceiling surface

Drain hose(Accessories)

(Local Locality)

Space for installation and service

28

25

100

150

260

71

58

Air inlet duct

Control box (Duct for dimension)

18 25

525 48

0 420

240

80

475

25

295

245

35

70

886 (Suspension bolts pitch)

(Low of suspension lug)

Suspension bolts(M10 × 4pcs)

145

3065

0

45

30 4556

0

18

(Sus

pens

ion

bolts

pitc

h)

850 (Duct for dimension)

Air outlet duct

Liquid pipingø9.52 (3/8”)

Gas pipingø15.88 (5/8”)

Drain (Connectablewith VP25)

Drain (Natural drainage, VP25)

9.2.3 Exterior dimensions(1) Indoor unitModels FDUR208-A, 258-A, 308-A

Unit : mm

850600

1720

100

635

Inspection hole

282

25

100

150

260

77

58

28

Air inlet duct

Control box

(Duct for dimension)

18 25

525 48

0 420

240

80

475

25

350

300

35

70

1406 (Suspension bolts pitch)

(Low of suspension lug)

Suspension bolts(M10 × 4pcs)

173

3065

0

45

30 4556

0

18

(Sus

pens

ion

bolts

pitc

h)

1370 (Duct for dimension)

Air outlet duct

Liquid pipingø9.52 (3/8”)

Gas pipingø19.05 (3/4”)

Drain (Connectablewith VP25)

Drain (Natural drainage, VP25)

1370600

1720

100

635

Inspection hole

600

(Max

.Dra

in u

p)

Air outlet

Ceiling surface

Drain hose(Accessories)

(Local Locality)

Models FDUR408-A, 508-A

Space for installation and service

Unit : mm

283

16

Remote controller mounting dimensions

477

0.3mm2, 3cores (O.D.φ5.6)

LCD display

120

Wall

Wire (Recessed)

Electrical box (Locally Purchased)

89 83.5

17

120

Remote controller outline

For the passage after wiring

120

6046

Standard Within 0.3 mm2 × Within 100 m0.5 mm2 × Within 200 m0.75 mm2 × Within 300 m1.25 mm2 × Within 400 m2 mm2 × Within 600 m

Allowable rang of wire thickness and length

(2) Remote controller

284

(3) Outdoor unitModel FDC208HEN3A

Unit: mm

Unit:mmMinimum allowable space to the obstacles

Mark1 2 3

L1 Open Open 500

L2 300 5 Open

L3 100 150 100

L4 5 5 5

Installationtype

Notes(1) Avoid the location where four sides are entirely

surrounded by walls.(2) Fix the unit by anchor bolts without fail. Restrict the

protrusion length of anchor bolt to 15 mm and under.(3) When strong wind blows against the unit, direct the

discharge port at a right angle to the wind direction.(4) Secure the space of 1 m and over at the top of unit.(5) Make the height of obstruction wall in front of discharge

port lower than the height of unit.

Required space for maintenance and air flow

VIEW A

L3

L1

Air inlet

Air outlet

Airinlet

Maintenancespace

L2

L4

Liquid piping: φ 6.35 (1/4")

(Flare connecting)

Gas piping: φ 15.88 (5/8")

(Flare connecting)

Liquid piping: φ 6.35 (1/4")

(Flare connecting)

Gas piping: φ 15.88 (5/8")

(Flare connecting)

Opening for electric wiring

Terminal block

Holes for anchor bolt

(M10 × 4 pcs.)

Holes for drain

(φ20 × 3 pcs.)

Electric wiring

Opening for pipingand electric wiring


Opening for piping and electric wiring


40 40

40

880

580

335260

55 50 1515 50

40

150150

50 15 50

50

2750

50

103

290

330

40

55

3515

3515

15

70

150

110

110

50

10 195

351

311

195

690

95

A53

285

Models FDC258HEN3A, 308HEN3B, 308HES3B

Required space for maintenance and air flow Minimum allowable space to the obstacles

Unit:mm

Mark1 2 3

L1 Open Open 500

L2 300 5 Open

L3 100 150 100

L4 5 5 5

Installationtype

Notes(1) Avoid the location where four sides are entirely

surrounded by walls.(2) Fix the unit by anchor bolts without fail. Restrict the

protrusion length of anchor bolt to 15 mm and under.(3) When strong wind blows against the unit, direct the

discharge port at a right angle to the wind direction.(4) Secure the space of 1 m and over at the top of unit.(5) Make the height of obstruction wall in front of discharge


Unit: mm

VIEW A

Liquid piping: ø9.52 (3/8")

(Flare connecting)

Gas piping: ø15.88 (5/8")

(Flare connecting)

40 53

95

40

Liquid piping: ø9.52 (3/8")

(Flare connecting)

Gas piping: ø15.88 (5/8")

Terminal block

Opening forelectric wiring Opening for

electric wiring

Holes for anchor bolt(M10 × 4 pcs.)

Holes for drain(ø20 × 3pcs.)

Electric wiring Opening for pipingand electric wiring

Opening for pipingand electric wiringOpening for piping

and electric wiring

(Flare connecting)

845

10

50

380

1515

340

55

1510

3

150

7050

47

3535

110

460 11

0

195

50

195

40

880

310222

40

L2

L3

L4

L1

Airinlet

Air inlet

Air outletMaintenancespace

150 580 150

50 15 15 50

50

50

502750 15

286

Models FDC408HES3B, 508HES3B

Required space for maintenance and air flow Minimum allowable space to the obstacles

Unit:mm

Mark1 2 3

L1 Open Open 500

L2 300 5 Open

L3 150 300 150

L4 5 5 5

Installationtype

Notes(1) Avoid the location where four sides are entirely sur-

rounded by walls.(2) Fix the unit by anchor bolts without fail. Restrict the

protrusion length of anchor bolt to 15 mm and under.(3) When strong wind blows against the unit, direct the dis-

charge port at a right angle to the wind direction.(4) Secure the space of 1 m and over at the top of unit.(5) Make the height of obstruction wall in front of discharge


VIEW A

5011

0

195

555

578

920

10

4650 48

100

165 580 175

351538

015 15

103

5050

50

5011

0

195

5070

50 1550

27

5015

47

29523715

340

35

55

5515

0

40

Gas piping: ø 19.05 (3/4")

(Flare connecting)

Liquid piping: ø 9.52 (3/8")

(Flare connecting)


Holes for drain(ø 20 × 3pcs.)


Opening for pipingand electric wiringOpening for piping

and electric wiring

Electric wiring


Holes for anchor bolt(M10 × 4pcs.)

Gas piping: ø 19.05 (3/4")

(Flare connecting)

Liquid piping: ø 9.52 (3/8")

(Flare connecting)


Terminal block

1250

(10

50)

A

Notes (1) The ( ) valve dimension formodel FDC408HES3B.

L2

L3

L4

L1

Airinlet

Air inlet

Air outletMaintenancespace

287

Mark1 2 3

L1 Open Open 500

L2 300 0 Open

L3 100 150 100

Installationtype

Notes(1) Fix the unit with anchor bolts.(2) Strong wind must not be directed to the air outlet.(3) Free space over the unit must be larger than 1 m.(4) The unit should not be surrounded by obstructions in all

direction.At least one direction around the unit must be free.

Models FDC306HEN3, 306HES3

Minimum allowable space to the obstacles

Unit:mm


Unit: mm

Anchor bolts(M10 × 4 pcs)

580

380

288

Notes(1) Fix the unit with anchor bolts.(2) Strong wind must not be directed to the air outlet.(3) Free space over the unit must be larger than 1 m.(4) The unit should not be surrounded by obstructions in

all direction.At least one direction around the unit must be free.

Minimum allowable space to the obstacles

Models FDC406HES3, 506HES3

Unit:mm

Mark1 2 3

L1 Open Open 500

L2 300 0 Open

L3 150 300 150

Installationtype


Unit: mm580

380

289

(2) Outdoor unitModel FDC208HEN3A

Polar white Polar white

Polar white

Polar white

Models FDC258HEN3A, 308HEN3B, 308HES3B

Models FDC408HES3B, 508HES3B

Polar white

9.2.4 Exterior appearance(1) Indoor unit.........Zinc steel plate

Models FDC306HEN3, 306HES3 Models FDC406HES3, 506HES3

290

9.2.5 Piping systemModels FDUR208HEN-SA, 258HEN-SA

Service valve

(Flare connecting)

Service valve(Flare connecting)

Gas line

Strainer

Thermistor

(ThO-D) Strainer

Capillarytube

Check valve

Capillary tube

Strainer

Strainer

Thermistor

(ThO-R)

Thermistor

(ThO-A)

Thermistor

(ThI-A)

Thermistor

(ThI-R)

Heat exchanger

Heat exchanger

Sub-coolingcoil

Flareconnecting

Liquid line

Capillarytube

Checkjoint

Check joint

4way valve

Cooling cycle

Outdoor unit Heating cycle

High pressure switch (63H2)

(For fan motor control)

Check joint

MufflerSolenoid

valve(SV1)

AccumulatorCompressor

Indoor unit

(ø15.88)

(208:ø6.35)258:ø9.52

Models FDUR308HEN-SB, 308HES-SB, 408HES-SB

Service valve

(Flare connecting)


Gas line

Strainer

Thermistor

(ThO-D)

Capillarytube

Check valve Solenoid valve(SV2)

Capillary tube

Strainer

Strainer

Thermistor

(ThO-R)

Thermistor

(ThO-A)

Thermistor

(ThI-A)

Thermistor

(ThI-R)

Heat exchanger

Heat exchanger

Sub-coolingcoil

Flareconnecting

Liquid line

Capillarytube

Checkjoint

Check joint

4way valve

Cooling cycle

Outdoor unit Heating cycle

High pressure switch (63H2)

(For fan motor control)

Check joint

MufflerSolenoid

valve(SV1)

AccumulatorCompressor

Indoor unit

(ø9.52)

(308:ø15.88)408:ø19.05

Strainer

291

Model FDUR508HES-SB

Thermistor(ThI-R)

Thermistor(ThO-D)

Thermistor(ThO-R)

Solenoidvalve (SV1)

Thermistor(ThO-A)

Thermistor(ThI-A)

Heat exchanger

Heat exchanger

High pressure switch (63H2)(For fan motor control)

Strainer

Strainer Strainer

StrainerCapillarytube

Capillary tube

Capillary tube

Capillarytube

Capillarytube

Liquid line(ø9.52)

Gas line(ø19.05)

Flare connecting



Cooling cycle

Heating cycle

4way valve

Compressor

Accumulator

Check valve

Checkjoint

Check joint

Check jointOil separator

Sub-coolingcoil

Solenoidvalve (SV2)

Indoor unit Outdoor unit

Indoor unit Outdoor unit

Models FDUR308HEN-A, 308HES-ACooling cycleHeating cycle

Thermistor(ThI-A)

Heat exchanger

Liquid line(ø9.52)

Strainer Strainer

Compressor

StrainerStrainer

Thermistor(ThI-R)


Capillary tube

Capillary tube

High Pressureregulator valve

DefrostThermostat

Check joint

Heatexchanger

4way valve



Check joint

Check joint

Gas line(ø15.88)

(23DH)

292

Thermistor(ThI-A)

Heat exchanger

Liquid line(ø9.52)

Strainer Strainer

Compressor

Accumulator

StrainerStrainer

Thermistor(ThI-R)


Capillary tube

Capillary tube

High Pressureregulator valve

DefrostThermostat

Check joint

Heatexchanger

4way valve



Check joint

Check joint

Gas line(ø19.05)

(23DH)

Models FDUR408HES-A, 508HES-ACooling cycleHeating cycleIndoor unit Outdoor unit

Preset point of the protective devices

Parts name Mark

Thermistor(for protection over-loading in heating)

Thermistor(for frost prevention)

Thermistor(for detecting dis-charge pipe temp.)

Thermistor(for detecting heatexchange temp.)

Defrost thermostat

High pressure switch(for controlling FM0)

OFF 68˚C

ON 61˚C

Equippedunit

ThI-R

Tho-D

Tho-R

23DH2

23DH1

63H2

Indoor unit

Outdoor unit

Outdoor unit

Outdoor unit

Outdoor unit

FDUR208~508 (FDC208~508) FDUR308~508 (FDC306~506)

OFF 2.5˚C

ON 10˚C

OFF 135˚C—

ON 90˚C

OFF 70˚C—

ON 60˚C

— OFF 12˚CON -6˚C

OFF 2.50MPa OFF 2.50MPaON 2.06MPa ON 1.86MPa

293

(b) FDC306HEN3

Indoor air W.B. temperature (˚CW.B.)

9.2.6 Selection chartCorrect the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can be

obtained in the following way.

Net capacity = Capacity shown on specification × Correction factors as follows.

(1) Coefficient of cooling and heating capacity in relation to temperatures

(a) FDC208~508

Indoor air W.B. temperature (˚CW.B.) ISO-T1 Standard condition

Ou

tdo

or

air

D.B

.te

mp

erat

ure

(˚C

D.B

.)

Co

olin

g o

per

atio

n

Ind

oo

r ai

r D

.B.

tem

per

atu

re (

˚CD

.B.)

Hea

tin

g o

per

atio

n

Co

effi

cien

t o

f co

olin

g a

nd

hea

tin

gca

pac

ity

in r

elat

ion

to

tem

per

atu

res

ISO-T1 Standard condition

Outdoor air W.B. temperature (˚CW.B.)



Ou

tdo

or

air

D.B

.te

mp

erat

ure

(˚C

D.B

.)

Co

olin

g o

per

atio

n

Ind

oo

r ai

r D

.B.

tem

per

atu

re (

˚CD

.B.)

Hea

tin

g o

per

atio

n

Co

effi

cien

t o

f co

olin

g a

nd

hea

tin

g c

apac

ity

in r

elat

ion

to

tem

per

atu

res


Applicable range

Heating

Cooling

294

Indoor air W.B. temperature (˚CW.B.) ISO-T1 Standard condition

(c) FDC306HES3~506HES3

Item

Air flowHi 0.111 0.053 0.069 0.106 0.050

Lo 0.083 0.037 0.049 0.079 0.034

Model FDUR208 FDUR258 FDUR308 FDUR408 FDUR508

(2) Correction of cooling and heating capacity in relation to air flow rate control (fan speed)Coefficient: 1.00 at High, 0.95 at Low

Table of bypass factor

Ou

tdo

or

air

D.B

.te

mp

erat

ure

(˚C

D.B

.)

Co

olin

g o

per

atio

n

Ind

oo

r ai

r D

.B.

tem

per

atu

re (

˚CD

.B.)

Hea

tin

g o

per

atio

n

Co

effi

cien

t o

f co

olin

g a

nd

hea

tin

g c

apac

ity

in r

elat

ion

to

tem

per

atu

res



Applicable range

Heating

Cooling

295

Equivalent piping length(1) m 7.5 10 15 20 25 30 35 40 45 50 55

Heating 1.0 1.0 1.0 1.0 1.0 0.998 0.998 0.993 0.993 0.988 0.988

FDUR208 1.0 0.998 0.998 0.993 0.988 0.988 0.983

FDUR258 1.0 0.998 0.993 0.988 0.983 0.978 0.973

FDUR308 1.0 0.995 0.985 0.975 0.965 0.955 0.945 0.935 0.925 0.915 0.905(FDC308)FDUR408 1.0 0.998 0.99 0.985 0.975 0.97 0.96 0.955 0.945 0.94 0.93(FDC408)FDUR508 1.0 0.995 0.98 0.97 0.955 0.945 0.93 0.92 0.905 0.895 0.88(FDC508)FDUR308 1.0 0.995 0.985 0.975 0.965 0.955 0.945 (FDC306) /0.98 /0.97 /0.955 /0.945 /0.93FDUR408 1.0 0.998 0.99 0.985 0.975 0.97 0.96 (FDC406) /0.995 /0.985 /0.975 /0.965 /0.955 /0.945FDUR508 1.0 0.995 0.98 0.97 0.955 0.945 0.93 (FDC506) /0.99 /0.975 /0.96 /0.945 /0.93 /0.915

(3) Correction of cooling and heating capacity in relation to one way length of refrigerant piping

It is necessary to correct the cooling and heating capacity in relation to the one way equivalent piping length between the indoor

and outdoor units.

Note (1) Equivalent piping length can be obtained by calculating as follows.

208, 258, 308 series [φ15.88(5/8″)]: Equivalent piping length = Real piping length + (0.10 × Number or bends in piping)

408, 508, series [φ19.05(3/4″)]: Equivalent piping length = Real piping length + (0.15 × Number of bends in piping)

[Equivalent piping length < Limitation length of piping + 5m]

(4) When the outdoor unit is located at a lower height than the indoor unit in cooling operation and when the outdoor unit is located

at a higher height than the indoor unit in heating operation, the following values should be subtracted from the values in the

above table.

50/60Hz

Height difference between the indoor unit andoutdoor unit in the vertical height difference 5m 10m 15m 20m 25m 30m

Adjustment coefficient 0.01 0.02 0.03 0.04 0.05 0.06

Piping length limitations

ItemModel FDUR208, 258 FDUR308~508 FDUR308~508

Max. one way piping length 30m 50m 30m

Max. vertical height differenceOutdoor unit is higher 20m Outdoor unit is higher 30m

15mOutdoor unit is lower 15m Outdoor unit is lower 15m

Note (1) Values in the table indicate the one way piping length between the indoor and outdoor units.

How to obtain the cooling and heating capacity

Example : The net cooling capacity of the model FDUR308HEN-SB with the air flow “High”, the piping length of 15m, the outdoor unit

located 5m lower than the indoor unit, indoor wet-bulb temperature at 19.0 ˚C and outdoor dry-bulb temperature 35 ˚C is

Net cooling capacity = 7100 × 1.00 × (0.985 - 0.01) × 1.0 = 6923 w

Factor by airtemperatures

FDUR308HEN-SB Air flow“High”

Length 15m.Height difference 5 m

(FDC208, 258) (FDC308~508) (FDC306~506)

Cooling

296

9.2.7 Characteristics of fan

Model FDUR408-AModel FDUR308-A

Model FDUR258-AModel FDUR208-A

0

20

40

60

80

100

120

140

160

180

200

20 21 22 23 24 25 26 27 28 29 30Upperlimit

50Standardpressure

Standardair flow

Lowerlimit

Air flow(m3/min)

Stat

ic p

ress

ure

(Pa)

Standard-Upper limit

High speed

-Upper limit

High speed

-Upper limit

High speed-Lower limit



High speed-High

High speed-High

High speed-High

High speed-Low

High speed-Low

Standard-High




Standard-Low

Standard-Low

Standard-Low

Standard-High

High speed-Upper

limitHigh speed

-Upper

limit

High speed-Lower

High speed-Lower

limitlimit

High speed-Low

High speed-Low

High speed-Lower

limit

High speed-High

High speed-High

High speed-Low

Standard-High

Standard-High



Standard-Lower

Standard-Lower

Lowerlimit

0

20

10

40

30

60

70

80

90

100

110

120

13 12 14 15 16 17 18 19Upperlimit

50Standardpressure

Standardair flow

Air flow(m3/min)

Stat

ic p

ress

ure

(Pa)

High speed-Upper

limitHigh speed

-Upper

limit

High speed-Lower

limitHigh speed-Lower

limit

High speed-High

High speed-High

High speed-High

High speed-Low

High speed-Low

Standard-High

Standard-High

Standard-High



Standard-Lower

Standard-Lower

Standard-Lower

Lowerlimit

0

20

10

40

30

60

70

80

90

100

110

120

17 18 19 20 21 22 23Upperlimit

50Standardpressure

Standardair flow

Air flow(m3/min)

Stat

ic p

ress

ure

(Pa)

High speed-Upper l

imit

High speed-Upper l

imit




High speed-High

High speed-High

High speed-HighHigh speed-Low

High speed-Low

High speed-Low

Standard-High

Standard-High

Standard-High



Standard-Lower

Standard-Lower

Standard-Lower

0

20

40

60

80

100

120

140

160

180

200

27 29 31 33 34 35 37 39 41Upperlimit

50Standardpressure

Standardair flow

Lowerlimit

Air flow(m3/min)

Stat

ic p

ress

ure

(Pa)

297

Model FDUR508-A

9.2.8 Noise levelNotes (1) The data are based on the following conditions.

Ambient air temperature:

Indoor unit 27˚C DB, 19˚C WB.

Outdoor unit 35˚C DB.

Indoor unit

Measured based on JIS B 8616

Mike position as below

(2) The data in the chart are measured in an unechonic room.

(3) The noise levels measured in the field are usually higher than the data because of reflection.

(1) Indoor unit

Outdoor unitMeasured based on JIS B 8616Mike position: at highest noise level

in position as below

Distance from front side 1 m

Height 1 m

Model FDUR208-A

Noise level 40 dB (A) at HIGH36 dB (A) at LOW

Model FDUR258-A


Mike (center & low points)

Unit

1.5 m

Model FDUR308-A


Souu

d P

ress

ure

Lev

el (

stan

dard

0.0

002µ

bar)

Mid Octave Band Frequency (Hz)

N30

N40

N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

Souu

d P

ress

ure

Lev

el (

stan

dard

0.0

002µ

bar)


N30

N40

N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

Souu

d P

ress

ure

Lev

el (

stan

dard

0.0

002µ

bar)


N30

N40

N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

0

20

40

60

80

100

120

140

160

180

200

33.5 35.5 37.5 39.5 41.5 43.5 45.5 47.5 49.550Upperlimit

50Standardpressure

42Standardair flow

Lowerlimit

Air flow(m3/min)

Stat

ic p

ress

ure

(Pa)

High speed

-Upper limit

High speed

-Upper limit



High speed-High

High speed-Low

High speed-Low

Standard-Low

Standard-Low

High speed-H

igh

High speed

-Upper limit


High speed-High

High speed-Low

Standard-Low

High speed-H

igh




298

Model FDUR408-A


Model FDUR508-A


Mid octave band frequency (Hz)

N30N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

N40

Soun

d pr

essu

re le

vel

(Sta

ndar

d 0.

0002

µ ba

r) d

B

Model FDC208HEN3A

Noise level 52 dB (A)

Model FDC258HEN3A



N30N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

N40

Soun

d pr

essu

re le

vel

(Sta

ndar

d 0.

0002

µ ba

r) d

B

(2) Outdoor unit

Souu

d p

ress

ure

leve

l (

stan

dard

0.0

002µ

bar)


N30N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

N40

Models FDC308HEN3B, 308HES3B


Model FDC306HEN3


Souu

d p

ress

ure

leve

l (

stan

dard

0.0

002µ

bar)


N30N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

N40

Model FDC306HES3


Model FDC408HES3B


Souu

d p

ress

ure

leve

l (

stan

dard

0.0

002µ

bar)


N30N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

N40

Model FDC506HES3


Souu

d p

ress

ure

leve

l (

stan

dard

0.0

002µ

bar)


N30N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

N40

Souu

d p

ress

ure

leve

l (

stan

dard

0.0

002µ

bar)


N30N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

N40

Model FDC508HES3B


Model FDC406HES3


Souu

d p

ress

ure

leve

l (

stan

dard

0.0

002µ

bar)


N30N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

N40

Souu

d p

ress

ure

leve

l (

stan

dard

0.0

002µ

bar)


N30N20

N50

N60

N70

63 125 250 500 1000 2000 4000 800020

30

40

50

60

70

20

30

40

50

60

70

N40

20

30

40

50

60

70


63 125 250 500 1000 2000 4000 8000

Souu

d P

ress

ure

Lev

el (

stan

dard

0.0

002µ

bar)

20

30

40

50

60

70

N20N30

N40

N50

N60

N70

20

30

40

50

60

70


63 125 250 500 1000 2000 4000 8000

Souu

d P

ress

ure

Lev

el (

stan

dard

0.0

002µ

bar)

20

30

40

50

60

70

N30

N40

N20

N50

N60

N70

299

Models FDUR208HEN-SA, 258HEN-SA

9.3 ELECTRICAL DATA9.3.1 Electrical wiring

Po

wer

so

urc

e1

Ph

ase

220/

240V

50H

z

Co

lor

mar

k

Mar

kC

olo

rB

KB

lack

BL

Blu

eB

RB

row

nG

RG

ray

OR

Ora

nge

PPi

nkR

DR

edW

HW

hite

Mar

kC

olo

rY

Yel

low

BK

/RD

Bla

ck/R

edB

K/W

HB

lack

/Whi

teB

L/W

HB

lue/

Whi

teB

R/W

HB

row

n/W

hite

OR

/WH

Ora

nge/

Whi

teR

D/W

HR

ed/W

hite

Y/G

NY

ello

w/G

reen

Ind

oo

r u

nit

Ou

tdo

or

un

it

TB

RD

/WH

BK

/WH

BK

/RD

BL

/WH

BR

/WH

Y/GN

BK

DR

DR

Tho

-R

63H

2

CnL

LED

-R

LED

-G

(Che

ck)

(Run

)

CnE

Vao(C

heck

er)

CnA

1 TroC

nA2

BK

Tho

-D

BK

Tho

-A

6

14V

27

BL/WH

BK/RD

BR/WH

BL

BL

P

P

BR

BR

BK

BK

2625

2120

1918

1716

1312

2

31

42

Prin

ted

circ

uit b

oard

3

HL

UH

A1

CF

01A

2

28

X05

X02

X01

X03

X04

X06

X07

X01

7

PC

PC

CnR

CnM1

CH

X04

X07

X02

X05

X03

X06

2/N 3 4 5

F(3.15A)

OR/WH

OR/WH

ORORWHBRBLBK

WHWH

RDBL

Y/GN

WHRD

RD

BK

/WH

WH

CT

1

R

S

C

52C

Cc

RD/WH

RD

BK/WH

NTB

SV

152

C20

SFM

O1

(49F

O1)

CM

240V

NR

BKBK

L1

SW1

FMI

(49F

I)

DM

Y / GN

RD

WH

BK

TB 1 2 3

1 2 9X1

X3

X4

X7

X5

X2

WH

RD RD

BK

BL

RD/WH

BL BL

BK

BL/WH

BK/WH

WH

WH

WH

Y / GN

Y / GN

Y / GN

CnF

1C

nF1

CF

I

38

76

5

LH

UH

Y BR/WH

GR GRGR

YBR/WH

GR

CnF

1

CnR

CnI

CnI

CnR

413

X1 X2 X3

X4X7

X5

Val

CnT CnH CnN

CnN

CnH2

ThI–A

ThI–R

BKBK

BKBK

RD RDBK BK

BKRD

BK

BR

CnW 1

CnW

2

CnQ

TrI Test

XR1

XR2

XR3

XR4

XR5

Opt

ion

SW2

SW3

ON ONOFF

OFF1 2

3 4

1 2

3 4

PC FS

X6

4 5

BL

BR

PC

10 14X6

220/240V

12V

CnF

2C

nF2

CnF

2

Prin

ted

circ

uit

boar

d

Thc

CnS

CnS2

BK BKBK

LSBK

CnB

Rem

ote

cont

rolle

r

RD WH BK

RDWH

BK

Y

Y

Z

Z

X

X

TB

Mea

nin

g o

f m

arks

Mar

kP

arts

nam

eM

ark

Par

ts n

ame

CC

Cap

acito

r fo

r C

MT

hI-R

The

rmis

tor

CF

IC

apac

itor

for

FMI

Th

o-A

The

rmis

tor

CF

OC

apac

itor

for

FMO

Th

o-D

The

rmis

tor

CH

Cra

nkca

se h

eate

rT

ho

-RT

herm

isto

rC

MC

ompr

esso

r m

otor

TrI

Tra

nsfo

rmer

(In

door

uni

t)C

nA

~ W

Con

nect

or (

mar

k)Tr

OT

rans

form

er (

Out

door

uni

t)C

T1

Cur

rent

sen

sor

Val

Var

isto

rF

Fuse

Vao

Var

isto

rF

MI

Fan

mot

or (

Indo

or u

nit)

20S

4-w

ay v

alve

sol

enoi

dF

MO

Fan

mot

or (

Out

door

uni

t)49

FI

Inte

rnal

ther

mos

tat f

or F

MI

NR

Surg

e su

ppre

ssor

49F

OIn

tern

al th

erm

osta

t for

FM

oP

CPh

oto

coup

ler

52C

Mag

netic

con

tact

or f

or C

MS

V1

Sole

noid

coi

l (fo

r co

ntro

l)X

1~7

Aux

iliar

y re

lay

SW

1Sw

itch

(Add

ress

set

)X

01~8

Aux

iliar

y re

lay

SW

2, 3

Cha

ngeo

ver

switc

h63

H2

Hig

h pr

essu

re s

witc

h (f

or c

ontr

ol)

TB

Term

inal

blo

ck (

mar

k)v

Term

inal

(F)

DM

Dra

in m

otor

�C

onne

ctor

FS

Floa

t sw

itch

LE

D-G

Indi

catio

n la

mp

(Gre

en)

Th

CT

herm

isto

rL

ED

-RIn

dica

tion

lam

p (R

ed)

Th

I -AT

herm

isto

r

300

Po

wer

so

urc

e1

Ph

ase

220/

240V

50H

z

Model FDUR308HEN-SB

Co

lor

mar

k

Mar

kC

olo

rB

KB

lack

BL

Blu

eB

RB

row

nG

RG

ray

OR

Ora

nge

PPi

nkR

DR

edW

HW

hite

Mar

kC

olo

rY

Yel

low

BK

/RD

Bla

ck/R

edB

K/W

HB

lack

/Whi

teB

L/W

HB

lue/

Whi

teB

R/W

HB

row

n/W

hite

OR

/WH

Ora

nge/

Whi

teR

D/W

HR

ed/W

hite

Y/G

NY

ello

w/G

reen

Mea

nin

g o

f m

arks

Mar

kP

arts

nam

eM

ark

Par

ts n

ame

CC

Cap

acito

r fo

r C

MT

hI-R

The

rmis

tor

CF

IC

apac

itor

for

FMI

Th

o-A

The

rmis

tor

CF

OC

apac

itor

for

FMO

Th

o-D

The

rmis

tor

CH

Cra

nkca

se h

eate

rT

ho

-RT

herm

isto

rC

MC

ompr

esso

r m

otor

TrI

Tra

nsfo

rmer

(In

door

uni

t)C

nA

~ W

Con

nect

or (

mar

k)Tr

OT

rans

form

er (

Out

door

uni

t)C

T1

Cur

rent

sen

sor

Val

Var

isto

rF

Fuse

Vao

Var

isto

rF

MI

Fan

mot

or (

Indo

or u

nit)

20S

4-w

ay v

alve

sol

enoi

dF

MO

Fan

mot

or (

Out

door

uni

t)49

FI

Inte

rnal

ther

mos

tat f

or F

MI

NR

Surg

e su

ppre

ssor

49F

OIn

tern

al th

erm

osta

t for

FM

oP

CPh

oto

coup

ler

52C

Mag

netic

con

tact

or f

or C

MS

V1,

2So

leno

id c

oil (

for

cont

rol)

X1~

7A

uxili

ary

rela

yS

W1

Switc

h (A

ddre

ss s

et)

X01

~8A

uxili

ary

rela

yS

W2,

3C

hang

eove

r sw

itch

63H

2H

igh

pres

sure

sw

itch

(for

con

trol

)D

MD

rain

mot

orv

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1716

1312

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42

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A1

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28

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ase

380/

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5 6

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28

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X08

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28

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Models FDUR408HES-SB, 508HES-SB

Po

wer

so

urc

e3

Ph

ase

380/

415V

50H

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Mea

nin

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arks

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mos

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Model FDUR308HES-A

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RD

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X4

X 7

X 5

X2

WH

RD RD

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BL BL

BK

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BK/WH

WH

WH

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Y / GN

Y / GN

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38

76

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X1 X2 X3

X4X7

X5

Val

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CnN

CnH2

ThI–A

ThI–R

BKBK

BKBK

RD RDBK BK

BKRD

BK

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CnW1

CnW

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CnQ

TrI Test

XR1

XR2

XR3

XR4

XR5

Opt

ion

SW2

SW3

ON ONOFF

OFF1 2

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305

Models FDUR408HES-A, 508HES-A

L1 L 2

CM

FMO

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1)

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6

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A B

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52C

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WH WH WH

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1 2 9X 1

X 3

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X 7

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CnI

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413

X1 X 2 X3

X4X 7

X 5

Val

CnT CnH CnN

CnN

CnH2

ThI–A

ThI–R

BKBK

BKBK

RD RDBK BK

BKRD

BK

BR

CnW1

CnW

2

CnQ

TrI Test

XR1

XR2

XR3

XR4

XR5

Opt

ion

SW2

SW3

ON ONOFF

OFF1 2

3 4

1 2

3 4

PC FS

X6

4 5

BL

BR

PC

10 14

X6

220/240V

12V

CnF

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306

MODE TEMP ON/OFF

AIR FLOW FILTERFAN SPEED

SET

TIMEACL

TIMER

AUTO COOL DRY FAN HEAT FILTER

°CAMPMON AM

PMOFF

FAN HI LO

9.4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER(1) Wireless remote controller

Models FDTN, FDEN, FDKN series

(a) Remote controller

OPERATION MODE indicatorIndicates selected operation mode

Fan speedIndicates the selected fan speed

Timer ON timeIndicates the timer ON time.When the timer mode is “CONT” or “OFF”,the present time is indicated.

FAN SPEED buttonEvery time when the button is pressed, themode is sequentially changed HI →LOW.

Timer mode buttonEvery time when the button is pressed, themode is sequentially changed CONT → ON→ OFF → PROGRAM.

Reset switchUsed to reset the microcomputer when some-thing is wrong on the remote controller dis-play.

• Above figure shows all indications for thepurpose of explanation, but practically onlythe pertinent parts are indicated.

OPERATION MODE select buttonThis button, whenever pressed, changes themode in the following order.

Auto swingIndicates the selection of swing louver.

Air flow direction buttonUsed to start or stop the swing louver.

Signal senderSignals are sent to the air conditionerfrom here.

Filter reset indicator

The FILTER mark is indicated when theFILTER RESET button is pressed.

Temperature indicatorSet temperature is indicated.

Timer OFF timeIndicated the timer OFF time.When the timer mode is “CONT” or“OFF”, there is no indication.

ON/OFF buttonWhen the button is pressed, the air conditioneris started, and when the button is pressed onceagain, it is stopped. (When the air conditioneris stopped, the present time only is indicated.When the air conditioner is operating, detailsof setting are indicated.)

ROOM TEMP. buttonRoom temperature is set within therange of 18-30˚C by operating the ∆ ,

∇ or button.

Filter button

Used to reset (turn off) the filter sign.(Press for more than 1 second.)Press the button only after completingthe filter cleaning.

TIME button

Used to set the present time and the timeroperation time.

Set button

Used to switch from the hour to minute or viceversa when setting the present time or timeroperation time.

Clock switch

Press this before setting the present time.

(b) Indoor unit indicatorsModel FDTN series

Model FDKN series

�

AUTO � COOL � DRYHEAT FAN

Remote controllersignal receiver.

RUN LAMP (GREEN)Light up : Air conditioner is operating.

TIMER/CHECK (YELLOW)Light up : Timer mode operating.

Flashing : When some error occurs.

307

Remote controllersignal receiver

RUN CHECK ON/OFF

Heavy Duty

CHECK LAMP (YELLOW)

When a malfunction occurs,the lamp flashing.

RUN LAMP (GREEN)

Illuminates during operation.

BACK UP SWITCHWhen the remote controller is miss-ing or defective, this switch can startand stop the air conditioner.Use the back up switch when the bat-tery is exhausted, or when the re-mote controller is missing or defec-tive.Usually operate the air conditionerwith remote controller.

(2) Wired remote controllerModels FDT, FDR, FDU, FDUM, FDUR, FDFL seriesFDR, FDU, FDUM , FDUR and FDFL series are not provided with AUTO SWING switch.

Panel shown below will appear if you open the cover. All contents of display on the LCD are indicated simultaneously for the purpose

of explanation.

Pull the knob on the cover to this side to open it downward.

FILTERRESET

CHECK

F A NSPEED

A U T OSWING

TIMER

SET

MODET E M PT I M E

PROGRAM TIMER

ON OFF

P MA M

SET TEMP

E°C Lo

MiHi

FAN

°C

CENTER REMOTE AUTODRYCOOLFAN HEAT

Filter reset switchUse this switch to reset (erase) the filtersign display.(Press the switch after cleaning the air filter.)

Filter signWhen this sign is indicated, clean the filter.

Remote displayThis is displayed when the unit is controlledwith an individual controller during normal operation.(Also displayed when the air conditioner is stopped.)

Inspection switch Use this switch when servicing the unit.

Operation mode displayDisplays the operation mode that hasbeen selected.(Cooling only air-conditioner has the displayof "COOL" ,"DRY" and "FAN" only.)

Fan speed displayDisplays the fan speed that has been set.

Operation/Inspection indicator lampDuring operation: Green lamp flashes.In case of error: Red lamp flashes.

On/Off switchUse this switch to start or stop theair conditioner.First push on the switch starts the unit and second push stops it. (The switch can be operated without opening the cover.)

Fan speed switchUse this switch to set a fan speed.

Mode switchUse this switch to select operationmodes.

Cover

Heatingpreparation display

Timer switchUse this switch when selecting contents of timer operation.

Set switchUse this switch to set a time for the timer.

Temperature/Time setting switchUse this switch to set the roomtemperature or time on the timer.

Auto swing switchUse this switch to operate or stopthe swing louver.

Auto swing displayIndicates the swing louver condition.

Settingtemperature displayDisplays the temperaturethat has been set.

Return air temperature displayDisplays the return air temperature.

Indicated value may be different from actual reading on a thermometer or other instrument but this is notnecessarily an error.

Note

Outdoor No.

Central displayThis is displayed when the unit iscontrolled with the optional central console.

Timer operation displayContents of timer operation are displayed.(Also displayed when the air conditioneris stopped.)

FILTER HOTKEEP

Model FDEN series

308

(3) Control switchModel FDF seriesThe liquid crystal display area indicates the full contents of display for explanation.

TIMERSET MODE

AUTO SWINGFAN SPEEDCHECKFILTERRESET

PROGRAMTIMER

ON OFF

PMAM

SET TEMP

E°C LO

HIFAN

°C

Outdoor No.

CENTER REMOTE FILTER AUTO DRY COOL FAN HOT KEEP

Remote displayThis display is indicated when the unit is controlledby the normal individual operation control.(The indication remains intact while the air-condi-tioner is stopped, too.

Filter signWhen this display is indicated, clean the air filter.

Center display¡ This display is indicated when the unit is

controlled by the center console that issold separately.

¡ Indicator lamp lights when the switchoperation is fixed.

Timer operation displayThis display indicates the content oftimer operation.(The indication remains intact whilethe air-conditioner is stopped, too.)

The swing louver controlIt is displayed as shown duringswing louver control.

Operation mode displayThe selected operation mode isindicated.

Prepararion of heating(HOT KEEP) display

FAN SPEED displayThe fan speed set is displayed.

Setting temperature displayThis display indicates the settingtemperature.

Mode switchThis switch makes selection of theoperation mode.

ON/OFF switchThis switch performs run/stop of theair-conditioner. Press switch onceto “run” and press it again to “stop”.

Operation/check indication lampDuring normal operation: Green lamp is lit.When an error occurred: Red lamp flickers.

Auto swing switchActivates and stops the swing louver.

FAN SPEED switchThe fan speed is switched.

Temperature setting/time setting switchThis switch is used to set the room tempera-ture and the timer time.

Check switchThis switch is used for service.

Filter reset switchThis switch resets (erases)the filter sign display.(Press this switch after thecleaning of filter has been fin-ished.)

Timer switchThis switch is used to select thecontent of timer operation.

Setting switchThis switch is used to set thetimer time.

Return air temperature displayThe temperature of return air is indicated.NOTEThe indicated temperature value may bedifferent from the indication of thermometer,etc. but this is not abnormal.

309

Note(1) :ON × :OFF / × :According to control other than temperature control.

ThermostatON

Cooling Fan Heating Dry

Control part

Compressor × × × ×4-way valve × × × × × × ×Outdoor fan × × × × ×Indoor fan / ×

Louver motor / ×Condensate motor × (2min. ON) × (2min. ON) × (2min. ON) × (2min. ON)

ThermostatOFF

HOT STARTDefrostThermostatON

ThermostatOFF

ThermostatON

ThermostatOFF

3) Control parts operation during cooling and heating

Function

–

Temperature difference between thermostat set temp.

and return air temp. (Detected by ThI-A)

1) Room temperature control (Differential of thermostat)

Temperature difference between thermostat set

temp. and return air temp. (Detected by ThI-A)

Heating operation

OFF (52C)

+1-1Set temp.by thermostat

Cooling operation

OFF (52C)

+1-1Set temp.by thermostat

ON (52C)

(3) Outline of microcomputer control function

(a) Operation control function by the indoor controller

2) Automatic operation (Only heat pump type)

If the Auto mode is selected on the remote control device, the selection of cooling or heating can be made automatically

depending on the room temperature (and the temperature of indoor heat exchanger). (When the switching between the

cooling and the heating is made within 3 minutes, the compressor will not operate for 3 minutes.) This will make much

easier the switching of cooling/heating at the change of season and can be adapted to the unmanned operation at bank

cash dispenser.

Notes (1) During the automatic switching of cooling/heating theroom temperature is controlled based on the settingof room temperature.

(2) If the temperature of indoor heat exchanger rises be-yond 63˚C during the heating operation, it is switchedautomatically to the cooling operation. For an hourafter this switching, the heating operation is suspendedregardless of the temperature as shown at left.

Heating operation

Cooling operation

Setting room temp.

Room temp. (detected at ThI-A) [deg]

Ready forheating

Suspended heating operation

Indoor heat exchanger temperature (˚C)

310

Notes (1) Operation block A B : Normal cooling operation for 16 minutes after operation is started.

Operation stops by thermostat when the set temperature is reached.

After 16 minutes, normal thermal drying operation starts.

Operation block C D : Operation as above is performed for 8 minutes.

After 8 minutes, normal thermal drying operation starts.

(2) In normal operation, the temperature is checked at 8 minute intervals after normal thermal drying

operation is started, to determine which operation block is to the selected.

Operation block A thermal drying is carried out if the thermostat set temperature is constant.

4) Dehumidifying operation (“THERMAL DRY”)

The compressor, the indoor fan motor and the outdoor fan motor

are operated intermittently under thermistor (ThI-A) control ac-

cording to the appropriate operation block, to provide cooling op-

eration for the dehumidifying.

Operation block

D C B A

Set temp. by thermostatPattern of operation

Operat ionblock

Thermal drying starting(for 8 or 16 minutes after operation started)

A(16 minutes)

• Cooling operation (Thermostat ON)• Indoor fan operating with the setting air flow.• When the thermostat is turned off, the indoor fan operates

for 30 seconds with the Lo operation in the wind blowingmode and then stops.

(8 minutes)Continuous cooling operation (FMI:Lo)

B

(8 minutes)

CM, FM0

FMI

C

(8 minutes)

CM, FM0

FMI

(8 minutes)

CM, FM0

FMI

D (8 minutes) All stoppage

5) Hot spurt (Only heat pump type)

In the hot spurt mode, the control is conducted at the level +2 higher than the setting temperature at the start of heating operation.

The hot spurt is canceled either after the initial thermostat OFF, when the indoor heat exchanger temperature reaches 61˚C or 60

minutes after the start of the mode.

Room temperature (deg)

CM, FMO: ON FMI : ON

Normal thermal dry operation(after completion of thermal drying)

Low -2 +3 High

311

6) FM control with the heating thermostat turned off (For cold draft prevention) (Only heat pump type)

In order to prevent a cold draft while the heating thermostat is turned off, the indoor blower is controlled in response to the

temperature of the indoor heat exchanger as illustrated below. It should be noted that if SW3-4 on the indoor PCB is turned off, the

indoor blower will stop so far as the temperature of the indoor heat exchanger is lower than 40˚C. It will be turned to the Lo

operation 5 minutes later.

7) Hot start (Cold draft prevention during heating) (Only heat pump type)

1) If the indoor heat exchanger temperature is lower than 30˚C when the heating operation has started, the following indoor

blower control is performed.

(1) In case of the thermostat off condition: Lo operation

(2) In case of the thermostat on condition : Stop

(3) If the indoor heat exchanger temperature exceeds 30˚C or 7 minutes after the beginning of hot start, the hot start

terminates and it returns to the setting airflow of the blower.

2) If the indoor heat exchanger temperature is lower than 30˚C when the unit is heating under the thermo-ON condition, the

indoor fan operates in the Lo mode. As the temperature rises higher than 30 ˚C or 7 minutes after the beginning of hot start,

the hot start terminates and it returns to the setting air flow.

8) Indoor fan control during defrost operation (Only heat pump type)

1) The indoor fan operation is changed from the setting airflow to the Lo operation 40 seconds before the start of defrost

operation (when the defrost thermostat is turned ON) and stops if the indoor heat exchanger temperature drops below 20˚C.

2) After the stop as described in 1)-above, the control will be conducted as illustrated below depending on the indoor heat

exchanger temperature.

3) If the indoor heat exchanger temperature rises beyond 30˚C of 7 minutes after the end of defrosting, the indoor fan control

related to the defrosting is completed.

Note (1) After the thermostat is reset, it returns to the hot startcontrol.

Indoor heat exchanger temperature(˚C)

(Setting air flow)

40 45

Lo

20 30

Lo

Stop

Indoor heat exchanger temperature (˚C)

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