Fujitsu ASUH18LPAS Service manual

AIR CONDITIONER
Wall mounted type
DESIGN & TECHNICAL MANUAL
INDOOR
ASUH18LPAS
ASUH24LPAS
OUTDOOR
AOUH18LPAS1
AOUH24LPAS1
DR_AS137EF_02
2022.10.11

Notices:
• Product specifications and design are subject to change without notice for future improvement.
• For further details, please check with our authorized dealer.
Trademarks
FGLair™ is trademark of Fujitsu General Limited in the United States, other countries or both.
Google Play™ is trademark of Google LLC.
App Store® is a service mark of Apple Inc., registered in the U.S. and other countries.
Copyright © 2021, 2022 Fujitsu General Limited. All rights reserved.

CONTENTS
Part 1. INDOOR UNIT...........................................................................1
1. Specifications................................................................................................2
2. Dimensions....................................................................................................4
2-1. Models: ASUH18LPAS and ASUH24LPAS ....................................................................4
3. Wiring diagrams ............................................................................................6
3-1. Models: ASUH18LPAS and ASUH24LPAS .....................................................................6
4. Capacity table................................................................................................7
4-1. Cooling capacity...............................................................................................................7
4-2. Heating capacity ..............................................................................................................9
5. Fan performance .........................................................................................10
5-1. Air velocity distributions..................................................................................................10
5-2. Airflow ............................................................................................................................12
6. Operation noise (sound pressure).............................................................14
6-1. Noise level curve............................................................................................................14
6-2. Sound level check point .................................................................................................15
7. Safety devices .............................................................................................16
8. External input and output...........................................................................17
8-1. External input.................................................................................................................18
8-2. External output...............................................................................................................20
8-3. Combination of external input and output.......................................................................22
8-4. Details of function ..........................................................................................................24
9. Group connection .......................................................................................46
10. Remote controller .......................................................................................47
10-1.Wireless remote controller ............................................................................................47
11. Function settings .......................................................................................50
11-1.Function settings by using remote controller.................................................................50
11-2.Custom code setting for wireless remote controller.......................................................59
12. Accessories.................................................................................................60
12-1.Models: ASUH18LPAS and ASUH24LPAS ..................................................................60
13. Optional parts .............................................................................................61
13-1.Controllers ....................................................................................................................61
13-2.Others ...........................................................................................................................62

Part 2. OUTDOOR UNIT.....................................................................63
1. Specifications..............................................................................................64
2. Dimensions..................................................................................................65
2-1. Models: AOUH18LPAS1 and AOUH24LPAS1 ..............................................................65
3. Installation space ........................................................................................66
3-1. Models: AOUH18LPAS1 and AOUH24LPAS1 ..............................................................66
4. Refrigerant circuit .......................................................................................69
4-1. Models: AOUH18LPAS1 and AOUH24LPAS1 ..............................................................69
5. Wiring diagrams ..........................................................................................70
5-1. Models: AOUH18LPAS1 and AOUH24LPAS1 ..............................................................70
6. Capacity compensation rate for pipe length and height difference........71
6-1. Models: AOUH18LPAS1 and AOUH24LPAS1 ..............................................................71
7. Additional charge calculation ....................................................................72
7-1. Models: AOUH18LPAS1 and AOUH24LPAS1 ..............................................................72
8. Airflow..........................................................................................................73
8-1. Model: AOUH18LPAS1..................................................................................................73
8-2. Model: AOUH24LPAS1..................................................................................................73
9. Operation noise (sound pressure).............................................................74
9-1. Noise level curve............................................................................................................74
9-2. Sound level check point .................................................................................................75
10. Electrical characteristics............................................................................76
11. Safety devices .............................................................................................77
12. Accessories.................................................................................................78
12-1.Models: AOUH18LPAS1 and AOUH24LPAS1 .............................................................78
CONTENTS (continued)

Part 1. INDOOR UNIT
WALL MOUNTED TYPE:
ASUH18LPAS
ASUH24LPAS

1. Specifications
Type
Wall mounted
Inverter heat pump
Model name ASUH18LPAS ASUH24LPAS
Power supply 208/230 V ~60 Hz
Power supply intake Outdoor unit
Available voltage range 187—253 V
Capacity
Cooling
Rated kW 5.28 7.03
Btu/h 18,000 24,000
Min.—Max. kW 1.17—5.57 1.17—7.15
Btu/h 4,000—19,000 4,000—24,400
Heating
Rated kW 5.28 7.03
Btu/h 18,000 24,000
Min.—Max. kW 0.82—7.03 0.85—8.50
Btu/h 2,800—24,000 2,900—29,000
Heating (17°F)*1
Rated kW 3.28 4.51
Btu/h 11,200 15,400
Max. kW 4.40 5.57
Btu/h 15,000 19,000
Heating (5°F)*2
Rated kW 5.3 5.71
Btu/h 18,100 19,500
Max. kW 5.55 5.71
Btu/h 18,600 19,500
Input power
Cooling Rated
kW
1.50 2.60
Min.—Max. 0.15—1.90 0.15—3.20
Heating Rated 1.33 2.07
Min.—Max. 0.15—2.10 0.15—3.10
Heating (17°F)*1Rated 1.12 1.58
Max. 1.70 2.20
Heating (5°F)*2Rated 2.47 2.85
Max. 2.50 2.85
Current Cooling Rated A 6.7 11.4
Heating 5.9 9.1
EER2 Cooling kW/kW 3.52 2.7
Btu/hW 12.0 9.2
COP2 Heating kW/kW 3.96 3.4
Btu/hW 13.5 11.6
SEER2 Cooling Btu/hW 20.0 19.0
HSPF2 Heating Btu/hW 10.5 9.8
Power factor Cooling %97.3 99.2
Heating 98.0 98.9
Moisture removal pints/h (L/h) 4.0 (1.9) 6.3 (3.0)
Maximum operating current*3Cooling A9.9 14.4
Heating 11.9 13.9
Fan
Airflow rate
Cooling
HIGH
CFM (m3/h)
530 (900) 642 (1,090)
MED 471 (800) 471 (800)
LOW 377 (640) 377 (640)
QUIET 241 (410) 306 (520)
Heating
HIGH 506 (860) 594 (1,010)
MED 406 (690) 506 (860)
LOW 330 (560) 377 (640)
QUIET 247 (420) 306 (520)
Type × Qty Crossflow fan × 1
Motor output W 59
Sound pressure level*4
Cooling
HIGH
dB (A)
44 49
MED 42
LOW 37
QUIET 26 31
Heating
HIGH 43 47
MED 39 43
LOW 34 37
QUIET 28 32
Heat exchanger type
Dimensions (H × W × D) in (mm)
Main1: 8-1/4 × 31-5/16 × 1-1/16 (210 × 796 × 26.6)
Main2: 4-15/16 × 31-5/16 × 1-1/16 (126 × 796 × 26.6)
Sub1: 3-5/16 × 31-5/16 × 1/2 (84 × 796 × 13.3)
Fin pitch FPI
Man1: 21
Main2: 21
Sub1: 18
Rows × Stages
Main1: 2 × 10
Main2: 2 × 6
Sub1: 1 × 4
Pipe type Copper
Fin type Aluminum
Enclosure
Material Polystyrene
Color White
Approximate color of Munsell N 9.25/
Dimensions
(H × W × D)
Net in (mm) 11 × 38-9/16 × 9-7/16 (280 × 980 × 240)
Gross 12-11/16 × 42-7/16 × 13-5/8 (322 × 1,078 × 346)
Weight Net lb (kg) 29 (13)
Gross 37 (17)
Connection pipe Size Liquid in (mm) Ø1/4 (Ø6.35)
Gas Ø1/2 (Ø12.7)
Method Flare
Drain hose Material PP+HDPE
Tip diameter in (mm) Ø17/32 (Ø13.8) (I.D.), Ø5/8 to 21/32 (Ø15.8 to 16.7) (O.D.)
Operation range Cooling °F (°C) 64 to 90 (18 to 32)
%RH 80 or less
Heating °F (°C) 86 or less (30 or less)
Remote controller type Wireless (Wired, Mobile app*5 [FGLair™] [option])
- 2 - 1. Specifications
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

Type
Wall mounted
Inverter heat pump
Model name ASUH18LPAS ASUH24LPAS
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 80°FDB (26.67°CDB)/67°FWB (19.44°CWB), and outdoor temperature of 95°FDB (35°CDB)/75°FWB (23.9°CWB).
– Heating: Indoor temperature of 70°FDB (21.11°CDB)/59°FWB (15.56°CWB), and outdoor temperature of 47°FDB (8.33°CDB)/43°FWB (6.11°CWB).
– *1: Heating (17°F): Indoor temperature of 70°FDB (21.11°CDB) /60°FWB (15.56°CWB), and outdoor temperature of 17°FDB (-8.33°CDB)/15°FWB (-9.44°CWB).
– *2: Heating (5°F): Indoor temperature of 70°FDB (21.11°CDB)/60°FWB (15.56°CWB), and outdoor temperature of 5°FDB (-15.0°CDB)/4°FWB (-15.56°CWB).
– Test conditions are based on AHRI 210/240 2023.
– Pipe length: 25 ft (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *3: Maximum current is maximum value when operated within the operation range.
• *4: Sound pressure level:
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.
• *5: Available on Google Play™ store or on App Store®. Optional WLAN Adapter is also required. For details, refer to the setting manual.
M condition
Model name ASUH18LPAS ASUH24LPAS
Capacity
Cooling
Rated kW 5.28 7.03
Btu/h 18,000 24,000
Min.—Max. kW 1.17—5.57 1.17—7.15
Btu/h 4,000—19,000 4,000—24,400
Heating
Rated kW 5.28 7.03
Btu/h 18,000 24,000
Min.—Max. kW 0.82—7.03 0.85—8.50
Btu/h 2,800—24,000 2,900—29,000
Heating (17°F)*
Rated kW 3.28 4.51
Btu/h 11,200 15,400
Max. kW 4.40 5.57
Btu/h 15,000 19,000
Input power
Cooling Rated
kW
1.50 2.60
Min.—Max. 0.15—1.90 0.15—3.20
Heating Rated 1.33 2.07
Min.—Max. 0.15—2.10 0.15—3.10
Heating (17°F)* Rated 1.12 1.58
Max. 1.70 2.20
Current Cooling Rated A 6.7 11.4
Heating 5.9 9.1
EER Cooling kW/kW 3.52 2.70
Btu/hW 12.0 9.2
COP Heating kW/kW 3.96 3.40
Btu/hW 13.5 11.6
SEER Cooling Btu/hW 20.0 19.0
HSPF Heating Btu/hW 11.0
Power factor Cooling %97.3 99.2
Heating 98.0 98.9
NOTES:
Specifications are based on the following conditions:
• Cooling: Indoor temperature of 80°FDB (26.67°CDB)/67°FWB (19.44°CWB), and outdoor temperature of 95°FDB (35°CDB)/75°FWB (23.9°CWB).
• Heating: Indoor temperature of 70°FDB (21.11°CDB)/59°FWB (15.56°CWB), and outdoor temperature of 47°FDB (8.33°CDB)/43°FWB (6.11°CWB).
• *: Heating (17°F): Indoor temperature of 70°FDB (21.11°CDB)/60°FWB (15.56°CWB), and outdoor temperature of 17°FDB (-8.33°CDB)/15°FWB (-9.44°CWB).
• Test conditions are based on AHRI 210/240 2017.
• Pipe length: 25 ft (7.5 m), Height difference: 0 ft (0 m). (Between outdoor unit and indoor unit.)
- 3 - 1. Specifications
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

2. Dimensions
2-1. Models: ASUH18LPAS and ASUH24LPAS
Unit: in (mm)
38-9/16 (980) 9-7/16 (240)
11 (280)
for pipe inlet
Ø3-1/8 (80)
1-15/16 (50) 1-15/16 (50)
2-3/8 (60) 16-15/16 (430)
2-1/16 (52)
Outline of indoor unit
for pipe inlet
Ø3-1/8 (80)
2-13/16
(72)
16-7/16 (418)
3-9/16
(91)
15-3/4 (400) 3-9/16
(90)
16-1/4 (413)3-1/16
(77)
16-7/16 (417)
19 (482)
20-1/16 (510)
- 4 -
2-1. Models: ASUH18LPAS and ASUH24LPAS 2. Dimensions
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

¢Installation space requirement
Provide sufficient installation space for product safety.
Unit: in (mm)
60 (1,500) or more
71 (1,800) or more
2 (50) or more
2 (40) or more
5 (117) or more
3 (71) or more
3 (70) or more
7 (160) or more
Wall hook bracket
Outline of the indoor unit
- 5 -
2-1. Models: ASUH18LPAS and ASUH24LPAS 2. Dimensions
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

3. Wiring diagrams
3-1. Models: ASUH18LPAS and ASUH24LPAS
- 6 -
3-1. Models: ASUH18LPAS and ASUH24LPAS 3. Wiring diagrams
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

4. Capacity table
Capacity tables show each of following values calculated based on the outdoor temperature and the
indoor temperature, under given Airflow Rate (AFR):
For cooling capacity: Total Capacity (TC), Sensible Heat Capacity (SHC), and Input Power (IP)
For heating capacity: Total Capacity (TC) and Input Power (IP)
4-1. Cooling capacity
¢Model: ASUH18LPAS
AFR CFM 530
Indoor temperature
°FDB 64 70 75 80 85 90
°FWB 54 60 63 67 71 73
Outdoor temperature
°FDB TC SHC IP TC SHC IP TC SHC IP TC SHC IP TC SHC IP TC SHC IP
kBtu kW kBtu kW kBtu kW kBtu kW kBtu kW kBtu kW
14 13.54 9.85 0.39 14.82 10.78 0.40 16.24 11.82 0.41 16.74 12.18 0.41 17.84 12.98 0.41 19.02 13.84 0.42
23 13.34 9.68 0.42 14.60 10.60 0.43 16.00 11.61 0.44 16.49 11.97 0.44 17.57 12.76 0.44 18.73 13.60 0.45
32 13.14 9.51 0.45 14.38 10.41 0.46 15.75 11.41 0.47 16.24 11.76 0.47 17.31 12.53 0.47 18.45 13.36 0.48
41 12.94 9.34 0.45 14.15 10.22 0.46 15.51 11.20 0.47 15.99 11.55 0.47 17.04 12.31 0.47 18.16 13.12 0.48
50 12.66 9.11 0.46 13.85 9.97 0.47 15.18 10.92 0.48 15.65 11.26 0.48 16.68 12.00 0.48 17.78 12.79 0.49
59 12.46 8.94 0.49 13.63 9.78 0.49 14.94 10.72 0.50 15.40 11.05 0.51 16.41 11.77 0.52 17.49 12.55 0.52
67 14.35 10.54 0.81 15.70 11.53 0.81 17.21 12.64 0.83 17.74 13.03 0.84 18.90 13.88 0.85 20.15 14.80 0.86
77 14.42 10.64 1.02 15.78 11.64 1.03 17.29 12.76 1.05 16.85 12.28 0.94 19.00 14.02 1.07 20.25 14.94 1.08
87 14.49 10.74 1.23 15.86 11.75 1.24 17.38 12.88 1.27 19.07 14.20 1.36 19.09 14.15 1.29 20.35 15.08 1.31
95 14.56 10.84 1.44 15.93 11.86 1.46 17.46 13.00 1.49 18.00 13.40 1.50 19.18 14.28 1.52 20.45 15.22 1.53
104 13.19 9.55 1.42 14.43 10.45 1.44 15.81 11.45 1.47 16.30 11.80 1.48 17.37 12.57 1.49 18.52 13.41 1.51
115 12.30 8.66 1.39 13.46 9.47 1.41 14.75 10.38 1.44 15.20 10.70 1.45 16.20 11.40 1.46 17.27 12.16 1.48
AFR m3/h 900
Indoor temperature
°CDB 17.8 21.1 23.9 26.7 29.4 32.2
°CWB 12.2 15.6 17.2 19.4 21.7 22.8
Outdoor temperature
°CDB TC SHC IP TC SHC IP TC SHC IP TC SHC IP TC SHC IP TC SHC IP
kW kW kW kW kW kW
-10.0 3.97 2.89 0.39 4.34 3.16 0.40 4.76 3.46 0.41 4.91 3.57 0.41 5.23 3.80 0.41 5.57 4.06 0.42
-5.0 3.91 2.84 0.42 4.28 3.11 0.43 4.69 3.40 0.44 4.83 3.51 0.44 5.15 3.74 0.44 5.49 3.99 0.45
0.0 3.85 2.79 0.45 4.21 3.05 0.46 4.62 3.34 0.47 4.76 3.45 0.47 5.07 3.67 0.47 5.41 3.92 0.48
5.0 3.79 2.74 0.45 4.15 3.00 0.46 4.55 3.28 0.47 4.69 3.39 0.47 4.99 3.61 0.47 5.32 3.85 0.48
10.0 3.71 2.67 0.46 4.06 2.92 0.47 4.45 3.20 0.48 4.59 3.30 0.48 4.89 3.52 0.48 5.21 3.75 0.49
15.0 3.65 2.62 0.49 4.00 2.87 0.49 4.38 3.14 0.50 4.51 3.24 0.51 4.81 3.45 0.52 5.13 3.68 0.52
19.4 4.21 3.09 0.81 4.60 3.38 0.81 5.04 3.70 0.83 5.20 3.82 0.84 5.54 4.07 0.85 5.91 4.34 0.86
25.0 4.23 3.12 1.02 4.62 3.41 1.03 5.07 3.74 1.05 4.94 3.60 0.94 5.57 4.11 1.07 5.94 4.38 1.08
30.6 4.25 3.15 1.23 4.65 3.44 1.24 5.09 3.77 1.27 5.59 4.16 1.36 5.59 4.15 1.29 5.96 4.42 1.31
35.0 4.27 3.18 1.44 4.67 3.48 1.46 5.12 3.81 1.49 5.28 3.93 1.50 5.62 4.18 1.52 5.99 4.46 1.53
40.0 3.86 2.80 1.42 4.23 3.06 1.44 4.63 3.35 1.47 4.78 3.46 1.48 5.09 3.69 1.49 5.43 3.93 1.51
46.1 3.60 2.54 1.39 3.94 2.78 1.41 4.32 3.04 1.44 4.45 3.14 1.45 4.75 3.34 1.46 5.06 3.56 1.48
- 7 -
4-1. Cooling capacity 4. Capacity table
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

¢Model: ASUH24LPAS
AFR CFM 642
Indoor temperature
°FDB 64 70 75 80 85 90
°FWB 54 60 63 67 71 73
Outdoor temperature
°FDB TC SHC IP TC SHC IP TC SHC IP TC SHC IP TC SHC IP TC SHC IP
kBtu kW kBtu kW kBtu kW kBtu kW kBtu kW kBtu kW
14 17.34 11.91 0.50 18.98 13.03 0.50 20.80 14.28 0.51 21.44 14.72 0.52 22.85 15.69 0.53 24.36 16.72 0.53
23 17.08 11.70 0.53 18.69 12.80 0.53 20.48 14.03 0.54 21.12 14.46 0.55 22.50 15.41 0.56 23.99 16.43 0.56
32 16.82 11.49 0.56 18.40 12.57 0.56 20.17 13.78 0.57 20.79 14.20 0.58 22.15 15.13 0.59 23.62 16.13 0.59
41 16.56 11.28 0.57 18.12 12.34 0.57 19.86 13.52 0.58 20.47 13.94 0.59 21.81 14.85 0.60 23.25 15.84 0.60
50 16.30 11.07 0.58 17.84 12.11 0.58 19.55 13.27 0.59 20.15 13.68 0.60 21.47 14.58 0.61 22.89 15.54 0.61
59 16.24 11.01 0.62 17.77 12.05 0.63 19.47 13.20 0.64 20.07 13.61 0.65 21.39 14.50 0.66 22.80 15.46 0.66
67 18.39 12.76 1.00 20.12 13.96 1.01 22.05 15.30 1.03 22.73 15.77 1.04 24.22 16.80 1.05 25.82 17.92 1.06
77 18.73 13.09 1.50 20.50 14.32 1.51 22.46 15.70 1.54 21.68 14.92 1.17 24.67 17.24 1.58 26.30 18.38 1.59
87 19.07 13.42 2.00 20.87 14.69 2.02 22.87 16.09 2.06 25.40 18.00 2.36 25.12 17.68 2.10 26.78 18.85 2.12
95 19.42 13.75 2.50 21.24 15.05 2.52 23.28 16.49 2.57 24.00 17.00 2.60 25.57 18.12 2.63 27.26 19.31 2.65
104 17.47 12.05 2.46 19.12 13.19 2.48 20.95 14.45 2.53 21.60 14.90 2.56 23.02 15.88 2.59 24.54 16.93 2.61
115 16.42 11.00 2.41 17.97 12.04 2.43 19.69 13.19 2.48 20.30 13.60 2.51 21.63 14.49 2.54 23.06 15.45 2.56
AFR m3/h 1,090
Indoor temperature
°CDB 17.8 21.1 23.9 26.7 29.4 32.2
°CWB 12.2 15.6 17.2 19.4 21.7 22.8
Outdoor temperature
°CDB TC SHC IP TC SHC IP TC SHC IP TC SHC IP TC SHC IP TC SHC IP
kW kW kW kW kW kW
-10.0 5.08 3.49 0.50 5.56 3.82 0.50 6.10 4.19 0.51 6.28 4.31 0.52 6.70 4.60 0.53 7.14 4.90 0.53
-5.0 5.01 3.43 0.53 5.48 3.75 0.53 6.00 4.11 0.54 6.19 4.24 0.55 6.59 4.52 0.56 7.03 4.81 0.56
0.0 4.93 3.37 0.56 5.39 3.68 0.56 5.91 4.04 0.57 6.09 4.16 0.58 6.49 4.43 0.59 6.92 4.73 0.59
5.0 4.85 3.31 0.57 5.31 3.62 0.57 5.82 3.96 0.58 6.00 4.09 0.59 6.39 4.35 0.60 6.82 4.64 0.60
10.0 4.78 3.24 0.58 5.23 3.55 0.58 5.73 3.89 0.59 5.91 4.01 0.60 6.29 4.27 0.61 6.71 4.55 0.61
15.0 4.76 3.23 0.62 5.21 3.53 0.63 5.71 3.87 0.64 5.88 3.99 0.65 6.27 4.25 0.66 6.68 4.53 0.66
19.4 5.39 3.74 1.00 5.90 4.09 1.01 6.46 4.48 1.03 6.66 4.62 1.04 7.10 4.93 1.05 7.57 5.25 1.06
25.0 5.49 3.84 1.50 6.01 4.20 1.51 6.58 4.60 1.54 6.35 4.37 1.17 7.23 5.05 1.58 7.71 5.39 1.59
30.6 5.59 3.93 2.00 6.12 4.30 2.02 6.70 4.72 2.06 7.44 5.28 2.36 7.36 5.18 2.10 7.85 5.52 2.12
35.0 5.69 4.03 2.50 6.23 4.41 2.52 6.82 4.83 2.57 7.03 4.98 2.60 7.50 5.31 2.63 7.99 5.66 2.65
40.0 5.12 3.53 2.46 5.60 3.87 2.48 6.14 4.24 2.53 6.33 4.37 2.56 6.75 4.65 2.59 7.19 4.96 2.61
46.1 4.81 3.22 2.41 5.27 3.53 2.43 5.77 3.87 2.48 5.95 3.99 2.51 6.34 4.25 2.54 6.76 4.53 2.56
- 8 -
4-1. Cooling capacity 4. Capacity table
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

4-2. Heating capacity
NOTE: Values mentioned in the table are calculated based on the maximum capacity.
¢Model: ASUH18LPAS
AFR CFM 506
Indoor temperature
°FDB 60 65 70 72 75
Outdoor temperature
°FDB °FWB TC IP TC IP TC IP TC IP TC IP
kBtu kW kBtu kW kBtu kW kBtu kW kBtu kW
5 3 19.63 2.40 19.11 2.45 18.60 2.50 18.09 2.55 17.57 2.60
14 12 20.89 2.08 20.35 2.12 19.80 2.17 19.25 2.21 18.71 2.25
23 19 21.78 2.01 21.21 2.05 20.64 2.09 20.07 2.13 19.50 2.17
32 28 21.91 1.91 21.33 1.95 20.76 1.99 20.19 2.03 19.61 2.07
41 37 24.06 1.96 23.43 2.00 22.80 2.04 22.17 2.08 21.54 2.12
47 43 25.33 2.02 24.66 2.06 24.00 2.10 23.34 2.14 22.67 2.18
50 47 27.98 2.04 27.25 2.09 26.52 2.13 24.77 2.17 24.77 2.21
59 50 29.00 2.05 28.24 2.09 27.48 2.14 24.77 2.18 24.77 2.22
68 59 25.99 1.68 25.31 1.71 24.63 1.75 23.95 1.78 23.27 1.82
75 64 26.14 1.53 25.45 1.56 24.77 1.59 24.09 1.62 23.40 1.65
AFR m3/h 860
Indoor temperature
°CDB 15.6 18.3 21.1 22.2 23.9
Outdoor temperature
°CDB °CWB TC IP TC IP TC IP TC IP TC IP
kW kW kW kW kW
-15.0 -16.1 5.75 2.40 5.60 2.45 5.45 2.50 5.30 2.55 5.15 2.60
-10.0 -11.1 6.12 2.08 5.96 2.12 5.80 2.17 5.64 2.21 5.48 2.25
-5.0 -7.2 6.38 2.01 6.22 2.05 6.05 2.09 5.88 2.13 5.72 2.17
0.0 -2.2 6.42 1.91 6.25 1.95 6.08 1.99 5.92 2.03 5.75 2.07
5.0 2.8 7.05 1.96 6.87 2.00 6.68 2.04 6.50 2.08 6.31 2.12
8.3 6.1 7.42 2.02 7.23 2.06 7.03 2.10 6.84 2.14 6.65 2.18
10.0 8.3 8.20 2.04 7.99 2.09 7.77 2.13 7.26 2.17 7.26 2.21
15.0 10.0 8.50 2.05 8.28 2.09 8.05 2.14 7.26 2.18 7.26 2.22
20.0 15.0 7.62 1.68 7.42 1.71 7.22 1.75 7.02 1.78 6.82 1.82
24.0 18.0 7.66 1.53 7.46 1.56 7.26 1.59 7.06 1.62 6.86 1.65
¢Model: ASUH24LPAS
AFR CFM 594
Indoor temperature
°FDB 60 65 70 72 75
Outdoor temperature
°FDB °FWB TC IP TC IP TC IP TC IP TC IP
kBtu kW kBtu kW kBtu kW kBtu kW kBtu kW
5 3 20.58 2.74 20.04 2.79 19.50 2.85 18.96 2.90 18.42 2.96
14 12 25.27 3.07 24.61 3.13 23.95 3.20 23.29 3.26 22.63 3.32
23 19 26.30 2.97 25.61 3.03 24.92 3.09 24.23 3.15 23.54 3.21
32 28 26.52 2.81 25.82 2.87 25.13 2.93 24.44 2.99 23.74 3.04
41 37 29.02 2.88 28.26 2.94 27.50 3.00 26.74 3.06 25.98 3.11
47 43 30.60 2.98 29.80 3.03 29.00 3.10 28.20 3.16 27.40 3.22
50 47 33.78 3.02 32.89 3.08 32.01 3.15 29.92 3.21 29.92 3.27
59 50 35.14 3.03 34.22 3.09 33.30 3.16 29.92 3.22 29.92 3.28
68 59 31.39 2.27 30.57 2.31 29.75 2.36 28.93 2.41 28.11 2.45
75 64 31.57 2.05 30.75 2.09 29.92 2.14 29.09 2.18 28.27 2.22
AFR m3/h 1,010
Indoor temperature
°CDB 15.6 18.3 21.1 22.2 23.9
Outdoor temperature
°CDB °CWB TC IP TC IP TC IP TC IP TC IP
kW kW kW kW kW
-15.0 -16.1 6.03 2.74 5.87 2.79 5.72 2.85 5.56 2.90 5.40 2.96
-10.0 -11.1 7.41 3.07 7.21 3.13 7.02 3.20 6.83 3.26 6.63 3.32
-5.0 -7.2 7.71 2.97 7.51 3.03 7.30 3.09 7.10 3.15 6.90 3.21
0.0 -2.2 7.77 2.81 7.57 2.87 7.37 2.93 7.16 2.99 6.96 3.04
5.0 2.8 8.51 2.88 8.28 2.94 8.06 3.00 7.84 3.06 7.61 3.11
8.3 6.1 8.97 2.98 8.73 3.03 8.50 3.10 8.26 3.16 8.03 3.22
10.0 8.3 9.90 3.02 9.64 3.08 9.38 3.15 8.77 3.21 8.77 3.27
15.0 10.0 10.30 3.03 10.03 3.09 9.76 3.16 8.77 3.22 8.77 3.28
20.0 15.0 9.20 2.27 8.96 2.31 8.72 2.36 8.48 2.41 8.24 2.45
24.0 18.0 9.25 2.05 9.01 2.09 8.77 2.14 8.53 2.18 8.28 2.22
- 9 -
4-2. Heating capacity 4. Capacity table
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

5. Fan performance
5-1. Air velocity distributions
¢Model: ASUH18LPAS
Measuring conditions Fan speed Operation mode
HIGH FAN
Top view
Horizontal louver: Up
Vertical louver: Center
2
1
0
1
2
(m)
7
3
0
3
7
(ft)
(m)
0 1 2 3 4 5 6 7 8
(ft)
0 3 7 10 13 16 20 23 26
Unit: ft/s (m/s)
7 (2.0) 3 (1.0) 2 (0.5)
Top view
Horizontal louver: Up
Vertical louver: Left & Right
Unit: ft/s (m/s)
3 (1.0)
3 (1.0)
2 (0.5)
2 (0.5)
7 (2.0)
7 (2.0)
(ft)
0 3 7 10 13 16 20 23 26
(m)
0 1 2 3 4 5 6 7 8 9
30
10
7
3
0
3
7
10
(ft) 3
2
1
0
1
2
3
(m)
Side view
Horizontal louver: Up
Vertical louver: Center
Unit: ft/s (m/s)
7 (2.0)
2 (0.5)3 (1.0)
(m)
0 1 2 3 4 5 6 7 8
(ft)
0 3 7 10 13 16 20 23 26
9
30
3
2
1
0
(m)
10
7
3
0
(ft)
Side view
Horizontal louver: Down
Vertical louver: Center
Unit: ft/s (m/s)
(m)
0 1 2 3 4 5 6 7 8
(ft)
0 3 7 10 13 16 20 23 26
9
30
3
2
1
0
(m)
10
7
3
0
(ft)
7 (2.0)
2 (0.5)3 (1.0)
- 10 -
5-1. Air velocity distributions 5. Fan performance
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

¢Model: ASUH24LPAS
Measuring conditions Fan speed Operation mode
HIGH FAN
Top view
Horizontal louver: Up
Vertical louver: Center
7 (2.0) 3 (1.0) 2 (0.5)
(m)
0 1 2 3 4 5 6 7 8
(ft)
0 3 7 10 13 16 20 23 26
2
1
0
1
2
(m)
7
3
0
3
7
(ft) Unit: ft/s (m/s)
Top view
Horizontal louver: Up
Vertical louver: Left & Right
3 (1.0)
3 (1.0)
2 (0.5)
2 (0.5)
7 (2.0)
7 (2.0)
(ft)
0 3 7 10 13 16 20 23 26
(m)
0 1 2 3 4 5 6 7 8 9
30
10
7
3
0
3
7
10
(ft) 3
2
1
0
1
2
3
(m) Unit: ft/s (m/s)
Side view
Horizontal louver: Up
Vertical louver: Center
2 (0.5)3 (1.0)
7 (2.0)
(m)
0 1 2 3 4 5 6 7 8
(ft)
0 3 7 10 13 16 20 23 26
9
30
3
2
1
0
(m)
10
7
3
0
(ft) Unit: ft/s (m/s)
Side view
Horizontal louver: Down
Vertical louver: Center
(m)
0 1 2 3 4 5 6 7 8
(ft)
0 3 7 10 13 16 20 23 26
9
30
3
2
1
0
(m)
10
7
3
0
(ft) Unit: ft/s (m/s)
2 (0.5)
3 (1.0)
7 (2.0)
- 11 -
5-1. Air velocity distributions 5. Fan performance
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

5-2. Airflow
¢Model: ASUH18LPAS
Cooling
Fan speed Airflow
HIGH
m3/h 900
l/s 250
CFM 530
MED
m3/h 800
l/s 222
CFM 471
LOW
m3/h 640
l/s 178
CFM 377
QUIET
m3/h 410
l/s 114
CFM 241
Heating
Fan speed Airflow
HIGH
m3/h 860
l/s 239
CFM 506
MED
m3/h 690
l/s 192
CFM 406
LOW
m3/h 560
l/s 156
CFM 330
QUIET
m3/h 420
l/s 117
CFM 247
- 12 -
5-2. Airflow 5. Fan performance
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

¢Model: ASUH24LPAS
Cooling
Fan speed Airflow
HIGH
m3/h 1,090
l/s 303
CFM 642
MED
m3/h 800
l/s 222
CFM 471
LOW
m3/h 640
l/s 178
CFM 377
QUIET
m3/h 520
l/s 144
CFM 306
Heating
Fan speed Airflow
HIGH
m3/h 1,010
l/s 281
CFM 594
MED
m3/h 860
l/s 239
CFM 506
LOW
m3/h 640
l/s 178
CFM 377
QUIET
m3/h 520
l/s 144
CFM 306
- 13 -
5-2. Airflow 5. Fan performance
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

6. Operation noise (sound pressure)
6-1. Noise level curve
¢Model: ASUH18LPAS
Cooling
Octave band sound pressure level, dB: (0 dB=0.0002 µbar)
Octave band center frequency, Hz
80
70
60
50
40
30
20
10
0
63 125 250 500 1,000 2,000 4,000 8,000
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
HIGH
QUIET
Heating
Octave band sound pressure level, dB: (0 dB=0.0002 µbar)
Octave band center frequency, Hz
80
70
60
50
40
30
20
10
0
63 125 250 500 1,000 2,000 4,000 8,000
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
HIGH
QUIET
¢Model: ASUH24LPAS
Cooling
Octave band sound pressure level, dB: (0 dB=0.0002 µbar)
Octave band center frequency, Hz
80
70
60
50
40
30
20
10
0
63 125 250 500 1,000 2,000 4,000 8,000
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
HIGH
QUIET
Heating
Octave band sound pressure level, dB: (0 dB=0.0002 µbar)
Octave band center frequency, Hz
80
70
60
50
40
30
20
10
0
63 125 250 500 1,000 2,000 4,000 8,000
NC-65
NC-60
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
NC-15
HIGH
QUIET
- 14 -
6-1. Noise level curve 6. Operation noise (sound pressure)
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

6-2. Sound level check point
32 in (0.8 m)
40 in (1 m)
Microphone Microphone
NOTE: Detailed shape of the actual indoor unit might be slightly different from the one illustrated
above.
- 15 -
6-2. Sound level check point 6. Operation noise (sound pressure)
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED ASUH18-24LPAS

7. Safety devices
Type of
protection Protection form Model
ASUH18LPAS ASUH24LPAS
Circuit
protection Current fuse (PCB*) 250 V, 3.15 A
Fan motor
protection
Thermal
protector
program
Activate 257±18 °F (125±10 °C)
Fan motor stop
Reset 212±18 °F (100±10 °C)
Fan motor restart
*PCB: Printed Circuit Board
- 16 - 7. Safety devices
WALL MOUNTED ASUH18-24LPAS WALL MOUNTED
ASUH18-24LPAS