General ARHA24L, ARHA24LATN, AOHA24LACL Technical Manual

R410A

1. DUCT

AR A24LATN

INDOOR UNIT

TYPE :

D2D_AR022E/03

2007.10.19

1. FEATURE

MODEL :

DUCT TYPE

AR A24LATN

AR A24L

DUCT TYPE

AR A24L

FEATURES

Energy saving

High energy saving was realized by making the indoor unit and outdoor
unit fan motor and compressor all DC and optimal design of the refriger­ant cycle. Rank A was achieved in European energy rank.

Installation styles

Embedded in Ceiling

Hanging from Ceiling

Slim & compact design

In the case of bottom suction type, as seen from lower rear part.

Control Box united with main unit

One-touch operating and easy-to-install
long-life filter (optional)

In addition to the slim height of 270 mm which is our sales point, further com­pactification is attained by reducing 65 mm from the width with the flanking
control box embedded inside the chassis.

- (01 - 01) -

EASY MAINTENANCE

DUCT TYPE

AR A24L

In the case of rear suction type, as seen from lower rear part.

4

1

1.Control box

DUCT TYPE

AR A24L

2.Fan casing

3.Fan

2

4.Motor

3

Bottom panel: 2 units

The motor and fan maintenance and dismounting can be made easily by removing
the rear panel and lower part of the casing with the main chassis installed.

Quiet mode

Operation at *25dB(A) possible by Quiet Mode.

* See our measurement conditions page (01-14).

Static pressure mode setting

Air flow, noise, etc. can be used under the optimum conditions by selecting
the static pressure mode matched to the installation conditions.

Room temperature adjustment correction

Suitable room temperature control is performed by changing the room tem­perature correction value by simple remote control operation to match the
conditions under which the air conditioner is installed.

Auto restart

The units restart automatically when the current was returned even when
there was a power interruption during operation.

- (01 - 02) -

2. COMBINATION

2-1. OUTDOOR UNIT

DUCT TYPE

AR A24L

MODEL : AO A24LACL

2-2. REMOTE CONTROLLER

2-2-1. WIRED REMOTE CONTROLLER

MODEL : UTB- UD

DUCT TYPE

AR A24L

CAUTION

Remote controller is not supplied with the indoor unit.
Separate purchase is necessary.

- (01 - 03) -

3. SPECIFICATIONS

AR A24LATN

230V 50Hz

198-264V 50Hz

Pipe type Copper

6.35 ( 1 / 4 in.)

15.88 ( 5 / 8 in.)

Type
Model name

mm

Rated

Min-Max

Rated

Min-Max
Rated

Min-Max

Power source

Available voltage range

Capacity

Cooling

Heating

European energy label

kW/kW

Input power

Cooling

kW

Heating
Rated

Min-Max

Current

Cooling

A

Rated

Max

Rated

Max

Heating

Cooling

Heating

Heating

Cooling

Moisture removal

Cooling

Heating

mm

Weight

m3/h

Fan

Dimensions
( H × W × D )

mm

Airflow
rate

Enclosure

Heat exchanger type

Sound pressure level

dB(A)

Remote controller type

Drain pipe
Material

Size

Operation range
Cooling

kg(lb.)

Connection pipe
Size

DUCT TYPE

AR A24L

EER 3.21

COP 3.61

Type × Q'ty Sirocco × 2

Motor output W 115

Recommended static pressure Pa 30 to 150

Dimensions (H × W × D) 294 × 1000 × 39.9

Fin pich 1.40

Rows x Stages 3 × 14

DUCTED MODEL

INVERTER HEATPUMP

Cooling A

Heating A

kW 7.1

BTU/h 24200

kW 0.9 - 8.0

BTU/h 3100 - 27300

kW 8.0

BTU/h 27300

kW 0.9 - 9.1

BTU/h 3100 - 31000

2.21

0.09 - 2.62

2.21

0.09 - 2.77

9.7

11.5

9.7

12.2

l/h (pints/h) 2.5 (4.4)

High 1100

Med 950

Low 800

Quiet 600

High 1100

Med 950

Low 800

Quiet 600

High 31

Med 29

Low 27

Quiet 25

High 31

Med 29

Low 27

Quiet 25

DUCT TYPE

AR A24L

Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27 °CDB / 19 °CWB.and outdoor temperature of 35 °CDB/24 °CWB.
Heating : Indoor temperature of 20 °CDB / 15 °CWB.and outdoor temperature of 7 °CDB/6 °CWB.
Standard static pressure : 30 Pa
Pipe length : 7.5 m, Height difference : 0 m.(Outdoor unit - Indoor unit)
Sound pressure level : Install a 2m duct to the outlet port and a 1m duct to the suction poit and measure.

Fin type Aluminium

Material Steel

Colour

Net 270 × 1135 × 700

Gross 300 × 1300 × 790

Net 38 ( 84 )

Gross 45 ( 99 )

Liquid

Gas

Method Flare

°C 18 to 32

%RH 80 or less

Heating °C 30 or less

mm Outer diameter: 38.0 / Inner diameter: 36.0

- (01 - 04) -

-

Wired

Steel

4. DIMENSIONS

MODEL : AR A24L

DUCT TYPE

AR A24L

Front view

(Unit : mm)

DUCT TYPE

AR A24L

Side view (L)

Top view

Rear view

Side view (R)

Refrigerant piping flare connection (Gas)
Refrigerant piping flare connection (Liquid)
Drain piping connection
Drain piping connection with cap.
Knock out hole for fresh air.

- (01 - 05) -

MOUNTING POSITION

DUCT TYPE

AR A24L

(Unit : mm)

DUCT TYPE

AR A24L

MAINTENANCE HOLE

It shall be possible to install and remove
the control box.

WHEN USING A SQUARE DUCT

It shall be possible to install and remove
the control box, fan units and filter.

- (01 - 06) -

5. WIRING DIAGRAMS

MODEL : AR A24L

DUCT TYPE

AR A24L

DUCT TYPE

AR A24L

COIL

- (01 - 07) -

6. CAPACITY TABLE

16

18

272932

231921

232518

21

Outdoor temperature

12

15

°CDB

-10

0

5

20

10

15

AFR

18.3

46

25

303540

Indoor temperature

AFR

°CDB

18.3

24

-16

-11

-7

Outdoor temperature

85101510

6

0

-2

151820

7

°CDB

°CWB

-15

3

24

-10

Indoor temperature

-5

161820

22

6-1. COOLING CAPACITY

DUCT TYPE

AR A24L

MODEL : AR A24L

°CDB

°CWB

TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI

5.62 4.62 0.60 6.26 4.65 0.61 6.47 5.05 0.62 6.90 5.07 0.62 7.11 5.48 0.62 7.54 5.45 0.63 7.97 5.81 0.64

5.53 4.58 0.65 6.16 4.60 0.66 6.37 5.00 0.66 6.79 5.02 0.67 7.00 5.42 0.67 7.42 5.40 0.68 7.83 5.75 0.68

5.34 4.49 0.79 5.94 4.51 0.80 6.15 4.91 0.80 6.55 4.92 0.81 6.75 5.32 0.82 7.16 5.29 0.82 7.57 5.64 0.83

5.13 4.38 0.92 5.71 4.40 0.93 5.90 4.79 0.94 6.29 4.80 0.95 6.49 5.19 0.95 6.88 5.17 0.96 7.27 5.50 0.97

5.25 4.44 0.76 5.85 4.47 0.78 6.05 4.86 0.78 6.45 4.87 0.79 6.65 5.26 0.79 7.05 5.24 0.80 7.45 5.58 0.81

6.78 5.21 1.61 7.55 5.24 1.64 7.81 5.70 1.65 8.32 5.72 1.66 8.58 6.18 1.67 9.09 6.15 1.69 9.61 6.55 1.70

6.45 5.04 1.81 7.18 5.07 1.84 7.43 5.51 1.85 7.92 5.53 1.87 8.16 5.97 1.88 8.65 5.95 1.90 9.14 6.34 1.91

6.10 4.87 2.01 6.80 4.90 2.04 7.03 5.32 2.05 7.50 5.34 2.07 7.73 5.77 2.08 8.19 5.74 2.10 8.65 6.12 2.12

6.32 4.98 2.53 7.04 5.01 2.57 7.28 5.45 2.58 7.76 5.46 2.61 8.00 5.90 2.62 8.48 5.88 2.65 8.96 6.26 2.67

5.13 4.38 2.05 5.71 4.41 2.08 5.91 4.79 2.09 6.30 4.80 2.11 6.49 5.19 2.12 6.88 5.17 2.14 7.27 5.51 2.16

3.66 3.68 1.56 4.08 3.70 1.58 4.22 4.02 1.59 4.50 4.03 1.60 4.64 4.36 1.61 4.91 4.34 1.63 5.19 4.62 1.64

AFR : Air flow rate (m3/min) TC : Total capacity (kW) SHC : Sensible Heat capacity (kW) PI : Power Input (kW)

6-2. HEATING CAPACITY

DUCT TYPE

AR A24L

MODEL : AR A24L

TC PI TC PI TC PI TC PI TC PI

6.27 2.75 6.12 2.81 5.97 2.87 5.82 2.93 5.67 2.98

7.10 2.97 6.93 3.04 6.76 3.10 6.60 3.16 6.43 3.22

7.94 3.12 7.75 3.18 7.56 3.25 7.37 3.31 7.18 3.38

8.80 3.05 8.59 3.12 8.38 3.18 8.17 3.25 7.96 3.31

9.72 3.08 9.49 3.14 9.26 3.21 9.03 3.27 8.80 3.34

9.56 2.66 9.33 2.71 9.10 2.77 8.87 2.83 8.65 2.88

9.85 2.66 9.62 2.72 9.38 2.78 9.15 2.83 8.91 2.89

9.03 2.13 8.82 2.17 8.60 2.22 8.39 2.26 8.17 2.31

8.29 1.65 8.09 1.69 7.90 1.72 7.70 1.76 7.50 1.79

8.58 1.65 8.38 1.68 8.17 1.72 7.97 1.75 7.77 1.79

AFR : Air flow rate (m3/min) TC : Total capacity (kW) PI : Power Input (kW)

- (01 - 08) -

7. FAN PERFORMANCE AND CAPACITY

Hi

Med

Low

Quiet

m3/h

- - - - - 1200 1100 1000

m3/h

- - - 980 915 830 - -

m3/h

- - 825 690 - - - -

m3/h

630 525 - - - - - -

Static pressure (Pa)

FAN SPEED

Hi

Med

Quiet

Low

7-1. NORMAL MODE

DUCT TYPE

AR A24L

MODEL : AR A24L

6 11 14 21 25 30 35 40

l/s - - - - - 333 306 278

CFM - - - - - 706 647 589

l/s - - - 272 254 231 - -

CFM - - - 577 539 489 - -

l/s - - 229 192 - - - -

CFM - - 486 406 - - - -

l/s 175 146 - - - - - -

CFM 371 309 - - - - - -

Q-h Characteris tic curve

50

40

DUCT TYPE

AR A24L

30

20

10

0

500 600 700 800 900 1,000 1,100 1,200 1 ,300

AIR FLOW (m3/h)

102.0 15.0

100.0

98.0

96.0

94.0

Cooling capacity(%) STATIC PRESSURE(Pa)Heating capacity(%)

92.0
500 6 00 70 0 800 900 1,000 1,100 1,200 1,300

Air temp

Capacity

COOLING

AIR FLOW (m3/h)

HEATING

102.0 50.0

100.0

98.0

96.0

94.0

92.0
500 6 00 7 00 800 900 1,000 1,100 1,200 1,300

Air temp

Capacity

AIR FLOW (m3/h)

- (01 - 09) -

14.5

14.0

13.5

13.0

12.5

12.0

11.5

11.0

10.5

10.0

49.0

48.0

47.0

46.0

45.0

44.0

43.0

42.0

41.0

40.0

°C)

Air temperature(

°C)

Air temperature(

7-2. HIGH STATIC MODE

Hi

Med

Low

Quiet

m3/h

- - - - - - 1200 1000

m3/h

- - - - 1000 815 - -

m3/h

- - 830 680 - - - -

m3/h

650 540 - - - - - -

Static pressure (Pa)

Quiet

Med

Hi

FAN SPEED

Low

7-2-1. MODE 1

DUCT TYPE

AR A24L

MODEL : AR A24L

20 23 30 35 40 47 55 65

l/s - - - - - - 333 278

CFM - - - - - - 706 589

l/s - - - - 278 226 - -

CFM - - - - 589 480 - -

l/s - - 231 189 - - - -

CFM - - 489 400 - - - -

l/s 181 150 - - - - - -

CFM 383 318 - - - - - -

70

60

Q-h Characteris tic curve

DUCT TYPE

AR A24L

50

40

30

20

10

500 600 700 800 900 1,000 1,100 1,200 1 ,300

AIR FLOW (m3/h)

102.0 15.0

100.0

98.0

96.0

94.0

Cooling capacity(%) STATIC PRESSURE(Pa)Heating capacity(%)

92.0
500 6 00 70 0 800 900 1,000 1,100 1 ,200 1,300

Air temp

Capacity

COOLING

AIR FLOW (m3/h)

HEATING

102.0 50.0

100.0

98.0

96.0

94.0

92.0
500 6 00 7 00 800 900 1,000 1,100 1,200 1,300

Air temp

Capacity

AIR FLOW (m3/h)

- (01 - 10) -

14.5

14.0

13.5

13.0

12.5

12.0

11.5

11.0

10.5

10.0

49.0

48.0

47.0

46.0

45.0

44.0

43.0

42.0

41.0

40.0

°C)

Air temperature(

°C)

Air temperature(

7-2-2. MODE 2

Hi

Med

Low

Quiet

m3/h

- - - - - - 1160 930

m3/h

- - - - 1020 800 - -

m3/h

- - 835 670 - - - -

m3/h

660 530 - - - - - -

Low

Static pressure (Pa)

FAN SPEED

Hi

Med

Quiet

DUCT TYPE

AR A24L

MODEL : AR A24L

110

100

90

80

70

35 37 50 55 68 75 93 100

l/s - - - - - - 322 258

CFM - - - - - - 683 547

l/s - - - - 283 222 - -

CFM - - - - 600 471 - -

l/s - - 232 186 - - - -

CFM - - 491 394 - - - -

l/s 183 147 - - - - - -

CFM 388 312 - - - - - -

Q-h Characteris tic curve

DUCT TYPE

AR A24L

60

50

40

30

500 600 700 800 900 1,00 0 1,100 1 ,200 1,30 0

AIR FLOW (m3/h)

102.0 15.0

100.0

98.0

96.0

94.0

Cooling capacity(%) STATIC PRESSURE(Pa)Heating capacity(%)

92.0
500 6 00 70 0 800 900 1,000 1,100 1 ,200 1,300

Air temp

Capacity

COOLING

AIR FLOW (m3/h)

HEATING

102.0 50.0

100.0

98.0

96.0

94.0

92.0
500 6 00 7 00 800 900 1,000 1,100 1,200 1,300

Air temp

Capacity

AIR FLOW (m3/h)

- (01 - 11) -

14.5

14.0

13.5

13.0

12.5

12.0

11.5

11.0

10.5

10.0

49.0

48.0

47.0

46.0

45.0

44.0

43.0

42.0

41.0

40.0

°C)

Air temperature(

°C)

Air temperature(

7-2-3. MODE 3

Hi

Med

Low

Quiet

m3/h

- - - - - - 1100 880

m3/h

- - - - 1000 810 - -

m3/h

- - 840 680 - - - -

m3/h

660 525 - - - - - -

Med

Hi

FAN SPEED

Low

Static pressure (Pa)

Quiet

DUCT TYPE

AR A24L

MODEL : AR A24L

150

140

130

120

110

100

90

80

70

60

50

500 600 700 800 900 1,00 0 1,100 1 ,200 1,30 0

102.0 15.0

100.0

98.0

96.0

94.0

Cooling capacity(%) STATIC PRESSURE(Pa)Heating capacity(%)

92.0
500 6 00 70 0 800 900 1,000 1,100 1 ,200 1,300

102.0 50.0

100.0

98.0

96.0

94.0

92.0
500 6 00 7 00 800 900 1,000 1,100 1,200 1,300

55 58 85 90 115 122 142 150

l/s - - - - - - 306 244

CFM - - - - - - 647 518

l/s - - - - 278 225 - -

CFM - - - - 589 477 - -

l/s - - 233 189 - - - -

CFM - - 494 400 - - - -

l/s 183 146 - - - - - -

CFM 388 309 - - - - - -

Q-h Characteris tic curve

AIR FLOW (m3/h)

Air temp

Capacity

AIR FLOW (m3/h)

Air temp

Capacity

AIR FLOW (m3/h)

- (01 - 12) -

COOLING

HEATING

14.5

14.0

13.5

13.0

12.5

12.0

11.5

11.0

10.5

10.0

49.0

48.0

47.0

46.0

45.0

44.0

43.0

42.0

41.0

40.0

DUCT TYPE

AR A24L

°C)

Air temperature(

°C)

Air temperature(

8. OPERATION NOISE

8-1. NOISE LEVEL CURVE

DUCT TYPE

AR A24L

COOLING

MODEL : AR A24L

80

70

60

50

40

NC-65

NC-60

NC-55

NC-50

NC-45

NC-40

Condition

Static pressure : 30Pa
Static mode : Normal

DUCT TYPE

AR A24L

30

20

Octave band sound pressure level, dB:(0dB=0.0002µbar)

10

0

63 125 250 5 00 1,000 2,000 4,000 8,000

QUIET

Octave band center frequency,Hz

HIGH

HEATING

MODEL : AR A24L

80

70

60

NC-35

NC-30

NC-25

NC-20

NC-15

NC-65

NC-60

50

40

30

20

Octave band sound pressure level, dB:(0dB=0.0002µbar)

10

0

63 125 250 5 00 1,000 2,000 4,000 8,000

QUIET

Octave band center frequency,Hz

HIGH

NC-55

NC-50

NC-45

NC-40

NC-35

NC-30

NC-25

NC-20

NC-15

- (01 - 13) -

8-2. SOUND LEVEL CHECK POINT

DUCT TYPE

AR A24L

Microphone Microphone

DUCT TYPE

AR A24L

- (01 - 14) -

9. ELECTRIC CHARACTERISTICS

*1)Wiring Spec.
Power Supply

DUCT TYPE

AR A24L

Model Name AR A24L

Voltage V 230

Frequency Hz 50

Max Operating Current A 0.7

Circuit breaker A 0.9

Connection Cable

Limited wiring length m 31

*1) Wiring Spec.
Selected Sample
(Selected based on Japan Electrotechnical Standard and Codes Committee E0005)

mm

DUCT TYPE

AR A24L

2

1.5 - 2.5

- (01 - 15) -

10. SAFETY DEVICES

140±20°C OFF

110±20°C ON

Protection form

DUCT TYPE

AR A24L

Circuit protection Current fuse (PCB) 3.15A 250V

Fan motor protection Thermal protection program

Model

AR A24L

DUCT TYPE

AR A24L

- (01 - 16) -

11. OPTIONAL PARTS

DUCT TYPE

AR A24L

Exterior Summary

Parts name

Model No.

DUCT TYPE

AR A24L

Wired remote

controller

Square flange

Round flange

UTB- UD

UTD-SF045T

UTD-RF204

Unit control is performed by
wired remote controller.

Both the Square flange and
the Round flange can be
selected.

Round flange is also used
when the fresh air duct is
installed.

200mm

507mm

2000mm

Long-life filter

Flexible duct

Remote sensor

UTD-LF25NA

UTD-RD202

UTD-RS100

Long-life filter can be
mounted to the indoor unit.

Connect to Round flange and
used at fan and fresh air ducts.

New amenity space can be
offered by installing the
Remote sensor in the remote
controller.

External

control set

- (01 - 17) -

UTD-ECS5A

Use to connect with various
peripheral devices and air
conditioner PC board.

R410A

OUTDOOR UNIT

2.

SINGLE TYPE :

AO A18LACL

AO A24LACL

D2D_AO004E/03

2007.10.12

1. SPECIFICATIONS

AO A18LACL AO A24LACL

546 × 876 × 18.2
546 × 842 × 18.2

546 × 866 × 18.2
546 × 832 × 18.2
504 × 589 × 18.2

2 × 26
1 × 24

12.70 ( 1/2 in.) 15.88( 5/8 in.)

Cooling

Heating

Dimensions (H × W × D)
Charge

Type

Material

Colour

Motor output

Cooling

Heating

Fin pitch

Type

Model name

Power source

Available voltage range

°C

Operation range

Fan
Airflow

rate

m3/h

dB(A)

mm
mm

Weight

kg(lb.)

Dimensions
( H × W × D)

Net

Gross

Net

Gross

Refrigerant oil

Enclosure

Heat exchanger type

Rows x Stages
Pipe type

Fin type

Type × Q'ty

Motor output

Type

Compressor

Refrigerant

Sound pressure level
Type × Q'ty

Starting current

Cooling

Heating

m

Connection pipe

Size

mm

Liquid

Gas

Method

Max. length

Max. height difference

INVERTER HEATPUMP

230V 50Hz

198-264V 50Hz

Propeller × 1

Copper

Aluminium

Steel sheet

Beige (10YR7.5/1.0NN)

Twin Rotary × 1

1100

R410A

POE

Flare

-10 to 46

-15 to 24

648 × 910 × 380

6.35 ( 1/4 in.)

OUTDOOR UNIT

AO A18-24L

A 7.7 10.0

2000 2470

1910 2470

W 54 65

50 52

50 53

1.30 1.40

2 × 26

OUTDOOR UNIT

AO A18-24L

W

g 1250 1700

578 × 790 × 300 578 × 790 × 315

40 (88) 44 (97)

44 (97) 48 (106)

25(chargeless : 15) 30(chargeless : 15)

15 20

Note :
Specifications are based on the following conditions.
Cooling : Indoor temperature of 27°CDB/19°CWB. and outdoor temperature of 35°CDB/24°CWB.
Heating : Indoor temperature of 20°CDB/15°CWB. and outdoor temperature of 7°CDB/6°CWB.
Pipe length : 7.5 m, Height difference : 0 m. (Outdoor unit - Indoor unit)

- (02 - 01) -

2. DIMENSIONS

MODELS : AO A18L, AO A24L

OUTDOOR UNIT

AO A18-24L

Top view

(Unit : mm)

OUTDOOR UNIT

AO A18-24L

Front view

Bottom view

MOUNTING POSITION

When there are obstacles at the
back or front sides.

Air flow

When there are obstacles at the
back, side(s), and top.

AO A18L AO A24L

Side view

When there are obstacles at the
back, side with the installation of
more than one unit.

600 - 1000

100 or more

600 or more

100 - 300

300 or more

25

(

Ser

0

or

v

mor

i

c

e

s

e

pac

e)

250 or more

250 or more

If the space is larger that is stated, the condition will be the same as that are no obstacles.

- (02 - 02) -

300 or more

3. REFRIGERANT CIRCUIT

OUTDOOR UNIT

AO A18-24L

OUTDOOR UNIT

AO A18-24L

- (02 - 03) -

4. WIRING DIAGRAMS

MODELS : AO A18L, AO A24L

OUTDOOR UNIT

AO A18-24L

OUTDOOR UNIT

AO A18-24L

- (02 - 04) -

5. COEFFICIENT OF COMPENSATION FOR PIPE LENGTH
 AND HEIGHT DIFFERENCE

MODEL : AO A18L

COOLING

5 7.5 10 15 20 25

15 - - -

OUTDOOR UNIT

AO A18-24L

Indoor unit is upper

than outdoor unit.

Height

difference H

(m)

Indoor unit is under

than outdoor unit

HEATING

Indoor unit is upper

than outdoor unit.

Height

difference H

(m)

Indoor unit is under

than outdoor unit

1

2

1

2

10 - -

7.5 -

5

0 1.000 1.000 0.999 0.984 0.982 0.978

-5

-7.5 -

-10 - -

-15 - - -

15 - - -

10 - -

7.5 -

5

0 0.993 1.000 0.982 0.920 0.894 0.867

-5

-7.5 -

-10 - -

-15 - - -

0.992 0.992 0.991 0.976 0.974 0.970

1.000 1.000 0.999 0.984 0.982 0.978

5 7.5 10 15 20 25

0.993 1.000 0.982 0.920 0.894 0.867

0.988 0.995 0.977 0.916 0.889 0.862

0.988 0.987 0.972 0.970 0.966

1.000 0.999 0.984 0.982 0.978

1.000 0.982 0.920 0.894 0.867

0.993 0.975 0.913 0.887 0.860

Pipe length (m)

0.953 0.950 0.947

0.983 0.968 0.966 0.962

0.999 0.984 0.982 0.978

0.984 0.982 0.978

Pipe length (m)

0.920 0.894 0.867

0.982 0.920 0.894 0.867

0.972 0.911 0.885 0.858

0.902 0.876 0.849

OUTDOOR UNIT

AO A18-24L

Indoor unit

H

Outdoor unit

Connection pipe

1

Indoor unit is upper than outdoor unit.

Height difference H

Outdoor unit

Connection pipe

2

Indoor unit is under than outdoor unit.

- (02 - 05) -

H

Indoor unit

MODEL : AO A24L

COOLING

Pipe length (m)

5 7.5 10 15 20 25 30

20

OUTDOOR UNIT

AO A18-24L

1

10

- - - - 0.963 0.961 0.959

- - 0.984 0.981 0.979 0.977 0.975

OUTDOOR UNIT

AO A18-24L

Indoor unit is upper

- 0.988 0.988 0.985 0.983 0.981 0.979

0.992 0.992 0.992 0.989 0.987 0.985 0.983

1.000 1.000 1.000 0.997 0.995 0.993 0.991

1.000 1.000 1.000 0.997 0.995 0.993 0.991

- 1.000 1.000 0.997 0.995 0.993 0.991

- - 1.000 0.997 0.995 0.993 0.991

- - - - 0.995 0.993 0.991

Height

difference H

(m)

than outdoor unit.

2

Indoor unit is under

than outdoor unit

7.5

5

0

-5

-7.5

-10

-20

Pipe length (m)

HEATING

5 7.5 10 15 20 25 30

20 - - - -

1

10 - -

0.992 0.952 0.927 0.893 0.863

0.927 0.893 0.863

Indoor unit is upper

Height

difference H

(m)

than outdoor unit.

2

7.5 -

5

1.001 1.000 0.992 0.952 0.927 0.893 0.863

0 1.001 1.000 0.992 0.952 0.927 0.893 0.863

-5

0.996 0.995 0.987 0.947 0.922 0.888 0.859

-7.5 -

1.000 0.992 0.952 0.927 0.893 0.863

0.993 0.984 0.945 0.920 0.886 0.857

Indoor unit is under

than outdoor unit

-10 - -

-20 - - - -

0.982 0.943 0.917 0.884 0.855

0.908 0.875 0.846

Indoor unit

H

Outdoor unit

Connection pipe

1

Indoor unit is upper than outdoor unit.

Height difference H

Outdoor unit

Connection pipe

2

Indoor unit is under than outdoor unit.

- (02 - 06) -

H

Indoor unit

6. ADDITIONAL CHARGE CALCULATION

20g/m

1700

R410A

1250

20g/m

R410A

MODEL : AO A18L

Refrigerant type

Refrigerant amount g

OUTDOOR UNIT

AO A18-24L

REFRIGERANT CHARGE

Pipe length m 15 20 25

Additional charge g 0 (Chargeless) +100 +200

OUTDOOR UNIT

AO A18-24L

MODEL : AO A24L

Refrigerant type

Refrigerant amount g

REFRIGERANT CHARGE

Pipe length m 15 20 25 30

Additional charge g 0 (Chargeless) +100 +200 +300

- (02 - 07) -

7. AIR FLOW

m3/h

2000

m3/h

1910

m3/h

2470

m3/h

2470

1050

NUMBER OF
ROTATIONS

(r.p.m)

NUMBER OF
ROTATIONS

(r.p.m)

NUMBER OF
ROTATIONS

(r.p.m)

NUMBER OF
ROTATIONS

(r.p.m)

860

820

1050

Airflow

Airflow

Airflow

Airflow

MODEL : AO A18L

COOLING

OUTDOOR UNIT

AO A18-24L

HEATING

l/s 556

CFM 1177

OUTDOOR UNIT

AO A18-24L

l/s 531

CFM 1124

MODEL : AO A24L

COOLING

l/s 686

CFM 1454

HEATING

l/s 686

CFM 1454

- (02 - 08) -

8. OPERATION NOISE

8-1. NOISE LEVEL CURVE

COOLING

MODEL : AO A18L

80

70

OUTDOOR UNIT

AO A18-24L

60

50

40

30

20

Octave band sound pressure level, dB:(0dB=0.0002µbar)

10

0

63 125 250 5 00 1,000 2,000 4,000 8,000

Octave band center frequency,Hz

NC-65

NC-60

NC-55

NC-50

NC-45

NC-40

NC-35

NC-30

NC-25

NC-20

NC-15

MODEL : AO A24L

80

70

60

50

40

30

20

Octave band sound pressure level, dB:(0dB=0.0002µbar)

10

0

63 125 250 5 00 1,000 2,000 4,000 8,000

Octave band center frequency,Hz

NC-65

NC-60

NC-55

NC-50

NC-45

NC-40

NC-35

NC-30

NC-25

NC-20

NC-15

OUTDOOR UNIT

AO A18-24L

HEATING

MODEL : AO A18L

80

70

60

50

40

30

20

Octave band sound pressure level, dB:(0dB=0.0002µbar)

10

NC-65

NC-60

NC-55

NC-50

NC-45

NC-40

NC-35

NC-30

NC-25

NC-20

NC-15

MODEL : AO A24L

80

70

60

50

40

30

20

Octave band sound pressure level, dB:(0dB=0.0002µbar)

10

NC-65

NC-60

NC-55

NC-50

NC-45

NC-40

NC-35

NC-30

NC-25

NC-20

NC-15

0

63 125 250 5 00 1,000 2,000 4,000 8,000

Octave band center frequency,Hz

- (02 - 09) -

0

63 125 250 5 00 1,000 2,000 4,000 8,000

Octave band center frequency,Hz

8-2. SOUND LEVEL CHECK POINT

OUTDOOR UNIT

AO A18-24L

OUTDOOR UNIT

AO A18-24L

- (02 - 10) -

9. ELECTRIC CHARACTERISTICS

Model Name AO A18L AO A24L

Voltage V

230

Power Supply

Frequency Hz

50

Max Operating Current A 15.0 16.2

OUTDOOR UNIT

AO A18-24L

Starting Current A 7.7 10.0

*1) Wiring Spec.

Main Fuse (Circuit breaker)
Current

Power Cable

A 20 20

mm

2

3.5 - 4.5

OUTDOOR UNIT

AO A18-24L

*2)Limited wiring length m 24 22

*1) Wiring Spec.
Selected Sample
(Selected based on Japan Electrotechnical Standard and Codes Committee E0005)

*2) Limited Wiring length :
This is the wiring length in case voltage descent is less than 2%.
When the wiring length becomes long, please select the wiring of a more larger diameter.

- (02 - 11) -

10. SAFETY DEVICES

AO A18L AO A24L

OFF:100

+15

-10

°C

ON:95

+15

-10

°C

OFF:110

+15

-10

°C

ON:105

+15

-10

°C

15A 250V

3.15A 250V

Compressor protection

Circuit protection

OFF:110°C

ON: After 40 minutes

OFF:110°C

ON: After 7 minutes

Current fuse (NEAR THE TERMINAL)

Current fuse

(MAIN PRINTED CIRCUIT BOARD)

Protection form

20A 250V

5A 250V

Model

OUTDOOR UNIT

AO A18-24L

Fan motor protection Thermal protection program

Thermal protection program
(COMPRESSOR TEMP.)

Thermal protection program
(DISCHARGE TEMP.)

OUTDOOR UNIT

AO A18-24L

- (02 - 12) -

REMOTE CONTROLLER

3. WIRED REMOTE CONTROLLER

UTB - UD

:

D2D_RC001E/02

2007.09.03

REMOTE CONTROLLER UTB- UD

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.

Economy operation are possible.

Easy installation with a slim shape with no bulge in the back.

The room temperature can be controlled by being detected the temperature
accurately with built-in thermo sensor.

Simple function setting

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

High performance and compact size

REMOTE CONTROLLER UTB- UD

Three functions are combined in
one unit.

Wired

remote

controller

Built-in timers

Possible to set ON/OFF time to operate twice each day
of the week.

SUMOTUWETH FR SA

7

3126 9

15 18 21

Setup screen example
(Set to Wednesday: 8:00 to 20:00.)

0 3 6 9 12 15 18 21 Time

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

Easy-to-understand time bar display

SUMOTUWETH FR SA

7

3126 9

15 18 21

24°C

24°C 28°C 24°C

Weekly

timer

Setback

timer

Setback timerWeekly timer

Possible to set temperature for two time spans and
for each day of the week.

SUMOTUWETH FR SA

Screen
after setup

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

0 3 6 9 12 15 18 21 Time

24°C

0 3 6 9 12 15 18 21 Time

28°C

3126 9

15 18 21

28°C

Easy-to-understand operation Simple installation

Components are compatible with standard
switch boxes. Flat back construction allows
equipment to be installed wherever it is
needed.

Timer
area

[

Variable timer control

]

The operation/display sections are zoned accord­ing to time and operation, enabling variable pro­gramming to match application.

Operation
area

European
switch box

- (03 - 01) -

JIS box

REMOTE CONTROLLER UTB- UD

FUNCTIONS

2
6
7
8
9

10

11

Display panel

16

19

20

18

17

15

13

12

14

1

START/STOP button

Pressed to start and stop operation.

2

Set temperature button

Selects the setting temperature.

3

Master control button

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

4

1
3

4

5

Fan control button

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

5

Economy button

Turns the economy efficient 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

Delete button

The schedule of a weekly timer is deleted.

11

Set button

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

12

Vertical airflow direction and swing button

Push for two seconds to change the swing mode.

13

Horizontal airflow direction and swing button

Push for two seconds to change the swing mode.

REMOTE CONTROLLER UTB- UD

DIMENSION

120

Front View

SPECIFICATION

21

[ Unit : mm ]

120

14

Filter button

15

Operation lamp

Lights during operation and when the timer is on.

16

Timer and clock display

17

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

SIZE (H x W x D mm) 120 x 120 x 17

WEIGHT ( g ) 160

CABLE LENGTH ( m )

POWER ( V )

10

12

- (03 - 02) -