Fujitsu ARC72LHTA Service-Handbuch

DESIGN & TECHNICAL MANUAL

SINGLE

INDOOR

OUTDOOR

AOA72LALT

AOA90LALT

ARC72LHTA ARC90LHTA

AIR CONDITIONER

Duct type

1. INDOOR UNIT

DTR_AR061E_03

2013.11.08

DUCT TYPE :

ARC72LHTA

ARC90LHTA

DUCT TYPE

ARC72-90LHTA

DUCT TYPE

ARC72-90LHTA

CONTENTS

1. INDOOR UNIT

1. FEATURES ........................................................................................................ 01 - 01

2. WIRED REMOTE CONTROLLER ................................................... 01 - 06

3. SPECIFICATIONS ........................................................................................ 01 - 08

4. DIMENSIONS................................................................................................... 01 - 09

5. WIRING DIAGRAMS.................................................................................. 01 - 12

6. CAPACITY TABLE....................................................................................... 01 - 13

6-1. COOLING CAPACITY ................................................................................ 01 - 13

6-2. HEATING CAPACITY ................................................................................. 01 - 14

7. FAN PERFORMANCE AND CAPACITY..................................... 01 - 15

8. OPERATION NOISE................................................................................... 01 - 19

8-1. NOISE LEVEL CURVE............................................................................... 01 - 19

8-2. SOUND LEVEL CHECK POINT ............................................................... 01 - 20

9. ELECTRIC CHARACTERISTICS..................................................... 01 - 21

10. SAFETY DEVICES....................................................................................... 01 - 22

11. EXTERNAL INPUT & OUTPUT ......................................................... 01 - 23

11-1. EXTERNAL INPUT...................................................................................... 01 - 23

11-2. EXTERNAL OUTPUT ................................................................................. 01 - 24

12. FUNCTION SETTINGS............................................................................. 01 - 29

12-1. INDOOR UNIT.............................................................................................. 01 - 29

12-2. INDOOR UNIT (Setting by remote controller) ..................................... 01 - 31

12-3. WIRED REMOTE CONTROLLER............................................................ 01 - 34

13. OPTIONAL PARTS...................................................................................... 01 - 35

13-1. CONTROLLER ............................................................................................ 01 - 35

13-2. OTHERS ....................................................................................................... 01 - 35

- (01 - 01) -

DUCT TYPE

ARC72-90LHTA

DUCT TYPE

ARC72-90LHTA

FEATURES1.

MODEL



ARC72LHTA / AOA72LALT

ARC90LHTA / AOA90L ALT

FEATURES



Signicantly improved EER/COP

z

Signicantly improved Hi-efciency is realized by the use of a ALL-DC components, inverter

technology, and large heat exchanger.

Energy saving technology

z

OUTDOOR UNIT

INDOOR UNIT

model

Cooling Heating

New

model

EER2.0 3.00.0

CoolingEER

57%increase!

2.03

3.20

2.0 3.00.0 COP

Heating COP

44%increase!

2.36

3.40

(AR¾C90L) (AR¾C90L)

Surface area

1.7times!

New model

Power consumption

has been reduced

by 25% compared to

previous models by

using a compact and

high performance DC

fan motor.

High efciency

operation is

realized by

using a sine

wave DC

inverter control.

Signicantly

greater efciency

is realized by

use of a large

capacity DC twin

rotary compressor

with substantially

increased

refrigerant intake

and compression

efciency.

Heat exchange efciency is signicantly

improved by the introduction of a new

4-face heat exchanger that increases

effective surface area.

In multiple outdoor unit installations, the

unique front intake design improves airow

into the Heat exchanger.

model

ARC72LHTA

ARC90LHTA

The power consumption has

been reduced drastically by the

introduction of DC fan motors.

- (01 - 02) -

DUCT TYPE

ARC72-90LHTA

DUCT TYPE

ARC72-90LHTA

Space saving and compact size

z

Compact size has been achieved by signicantly reducing the width of the outdoor units

compared to previous models.

Static pressure selection

z

5 Static Pressure modes are available.

Improvement and design exibility has allowed multiple fan speeds and static pressure modes.

The air ow rate has been improved to meet the requirements of complex ductwork layout designs.•

→ By introducing a new DC fan motor, the static pressure range selected by the installer can

range between 50 to 250Pa.

A three speed fan (High, Medium and Low) allows accurate airow control.•

A decrease in the power consumption of the indoor unit has been realised by optimizing the •

control of the indoor fan motor rotation frequency.

Low static pressure - High static pressure

Fan motor speed : Low speed - High speed

3900

100

150

200

250

300

4100 4300 4500 4700 4900 5100 5300 5500

Normal (72Pa)

LSP mode (50Pa)

HSP mode 1 (150Pa)

HSP mode 2 (200Pa)

HSP mode 3 (250Pa)

Static pressure (Pa)

Air flow (m3/h)

Max. 250Pa

Rating

(AR¾C90L)

]Efciency of the indoor unit operation has

been improved in both the static pressure and

air ow design.

1,300

930

28%

reduction

Previous model New model

- (01 - 03) -

DUCT TYPE

ARC72-90LHTA

DUCT TYPE

ARC72-90LHTA

Outdoor unit quiet operation

z

Low noise mode (Optional parts: UTY-XWZXZ2)

Introduction of a low outdoor noise operation mode allow the outdoor unit to have two quiet mode

operation settings.

* Performance may drop depending on the outside air temperature condition, etc.

1) Level1 (Rated noise value -3dB)

2) Level2 (Rated noise value -5dB)

Peak cut operation

z

Peak cut mode (Optional parts: UTY-XWZXZ2)

The introduction of a peak power consumption mode control a 4 step outdoor operation control to

cut down energy usage at peak energy usage times.

* Performance drops by reducing the power consumption preferentially.

Level 1 ... Performs operation which suppresses the power consumption to almost 0% by stopping

the compressor.

Level 2 ... Performs operation which suppresses the power consumption to 50% of the rated

power consumption value.

Level 3 ... Performs operation which suppresses the power consumption to 75% of the rated

power consumption value.

Level 4 ... Performs operation which suppresses the power consumption to the rated power

consumption value (100%).

- (01 - 04) -

DUCT TYPE

ARC72-90LHTA

DUCT TYPE

ARC72-90LHTA

Easy service & maintenance

z

Outdoor unit

Indoor unit

Consolidated electrical

components make maintenance

easy

Maintenance of electrical

components, valves, and

compressor parts from

the front is possible.

Movable PCB panel that allows for

easier maintenance work behind

the PCB

Split front panel allows for

maintenance from top or

bottom of the outdoor unit

Easy-to-read 7-segment LED display

which explains operational and

trouble status

Fan unit

Left and Right fan motors can be removed

separately which has made servicing of

the indoor unit easier.

- (01 - 05) -

DUCT TYPE

ARC72-90LHTA

DUCT TYPE

ARC72-90LHTA

Adoption of blue n heat exchanger

z

Corrosion resistant of the heat exchanger has been improved by the introduction of blue n

treatment to the outdoor unit’s heat exchanger.

Improvement of piping length

z

Improvement of low outdoor ambient temperature performance

z

Blue ﬁn heat exchanger

Standard chromate protection

Cobalt Blue protection

Aluminium base material

Hydrophilic coating

Previous model New model

50m 75m

Previous model New model

Cooling 0°C -5°C

Heating -10°C -15°C

- (01 - 06) -

DUCT TYPE

ARC72-90LHTA

DUCT TYPE

ARC72-90LHTA

WIRED REMOTE CONTROLLER2.

FEATURES



Various timer setup (ON / OFF / WEEKLY) are possible.



Equipped with weekly timer as standard function.(2 times Start / Stop



per day for a week)

When setting up a timer, operation mode and a temperature setup



can be changed.

When a failure occurs, the error code is displayed. (Maximum of 16)



Error indication.(A maximum of 16 error histories are memorizable.)



Up to 16 indoor units can be simultaneously controlled.



The room temperature can be controlled by being detected the



temperature accurately with built-in thermo sensor.

Simple function setting

z

Setting of the air conditioner selection function is performed by remote controller.

High performance and compact size

z

Three functions are combined in

one unit.

Built-in timers

z

Wired

remote

controller

Weekly

timer

Setback

timer

+ +

Weekly timer Setback timer

At "Weekly timer" + "Set back timer" setup

Easy-to-understand operation

z

[Variable timer control]

The operation/display sections are zoned

according to time and operation, enabling

variable programming to match application.

Simple installation

z

Components are compatible with standard

switch boxes. Flat back construction allows

equipment to be installed wherever it is

needed.

TH FR SA

6 9

15 18 21

TH FR SA

6 9

15 18 21

TH FR SA

6 9

15 18 21

Possible to set ON/OFF time to operate twice each day

of the week.

Setup screen example

(Set to Wednesday: 8:00 to 20:00.)

Screen

after setup

European

switch box

JIS box

Setup screen example

(Set from Sunday to Saturday: 12:00 to 15:00, 28 °C.)

Possible to set temperature for two time spans and

for each day of the week.

Easy-to-understand time bar display

24°C

036912 15 18 21 Time

28°C

036912 15 18 21 Time

28°C

24°C

036912 15 18 21 Time

24°C 28°C 24°C

Timer

area

Operation

area

- (01 - 07) -

DUCT TYPE

ARC72-90LHTA

DUCT TYPE

ARC72-90LHTA

FUNCTIONS



Display panel

DIMENSION



SPECIFICATION



WIRING SPECIFICATIONS



Use Size Wire type Remarks

Remote controller

cable

0.33mm2

( 22AWG ) Polar 3 core Use sheathed PVC cable.

16 18

19 20

120

Side ViewFront View

SIZE (H x W x D mm) 120 x 120 x 18

WEIGHT ( g ) 160

CABLE LENGTH ( m ) 10

POWER ( V ) 12

1 START/STOP button

Pressed to start and stop operation.

2 SET TEMP. button

Selects the setting temperature.

3 MODE button

Selects the operating mode (AUTO, HEAT, FAN, COOL, DRY).

4 FAN button

Selects the fan speed (AUTO, LOW, MED, HIGH).

5 ECONOMY button

Turns the economy efcient mode on and off.

6 TIMER MODE (CLOCK ADJUST) button

Selects the timer mode (OFF TIMER, ON TIMER, WEEKLY

TIMER). Set the current time.

7 DAY (DAY OFF) button

Temporarily cancels of one day timer.

8 SET BACK button

Pressed to select the set back timer.

9 Set time button

Pressed to set time.

10 TIMER DELETE button

The schedule of a weekly timer is deleted.

11 TIMER SET button

Sets the date, hour, minute and on-off time.

12 Vertical airow direction and swing button

Push for two seconds to change the swing mode.

13 Horizontal airow direction and swing button

Push for two seconds to change the swing mode.

14 FILTER RESET button

15 Operation lamp

Lights during operation and when the timer is on.

16 Timer and clock display

17 Operation mode display

18 Fan speed display

19 Operation lock display

20 Temperature display

21 Function display

Defrost display

Thermo sensor display

Economy display

Vertical swing display

Horizontal swing display

Filter display

Functions will be different due to type of indoor unit.

For details, please see operation manual.

[ Unit : mm ]

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