Fujitsu ASUH18LPAS Design & Technical Manual
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Fujitsu ASUH18LPAS Design & Technical Manual

Fujitsu ASUH18LPAS Design & Technical Manual

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

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Questions and answers

Peter
February 8, 2025

How many db I the outdoor unit Aouh18Lpas1

0
1 comments:
Mr. Anderson
May 14, 2025

The ASUH18LPAS is an indoor unit. The noise level information provided in the context is for the outdoor unit AOUH18LPAS1, which has a sound pressure level of 50 dB(A) for both cooling and heating.

This answer is automatically generated

0
Michael W Albright
June 6, 2025

ASUH18LPAS which WLAN adapter do i need, part #

0
Michael W Albright
June 6, 2025

ASUH18LPAS how to change custom code

0
Michael W Albright
June 6, 2025

How to change air conditioner custom code?

0

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Summary of Contents for Fujitsu ASUH18LPAS

  • Page 1 AIR CONDITIONER Wall mounted type DESIGN & TECHNICAL MANUAL INDOOR ASUH18LPAS ASUH24LPAS OUTDOOR AOUH18LPAS1 AOUH24LPAS1 DR_AS137EF_02 2022.10.11...
  • Page 2 • 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. ®...

  • Page 3: Table Of Contents

    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.
  • Page 4 CONTENTS (continued) 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.

  • Page 5: Part 1. Indoor Unit

    Part 1. INDOOR UNIT WALL MOUNTED TYPE: ASUH18LPAS ASUH24LPAS...

  • Page 6: Specifications

    1. Specifications Wall mounted Type 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 5.28 7.03 Rated Btu/h 18,000 24,000 Cooling 1.17—5.57 1.17—7.15 Min.—Max. Btu/h 4,000—19,000 4,000—24,400...
  • Page 7 Wall mounted Type 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).

  • Page 8: Dimensions

    2. Dimensions 2-1. Models: ASUH18LPAS and ASUH24LPAS Unit: in (mm) 38-9/16 (980) 9-7/16 (240) 16-7/16 (417) 19 (482) 20-1/16 (510) 3-1/16 16-1/4 (413) 15-3/4 (400) 3-9/16 (77) (90) Outline of indoor unit for pipe inlet for pipe inlet Ø3-1/8 (80) Ø3-1/8 (80)
  • Page 9 Unit: in (mm) 2 (40) or more Wall hook bracket 3 (70) or more 5 (117) or more Outline of the indoor unit 7 (160) or more 60 (1,500) or more - 5 - 2-1. Models: ASUH18LPAS and ASUH24LPAS 2. Dimensions...

  • Page 10: Wiring Diagrams

    3. Wiring diagrams 3-1. Models: ASUH18LPAS and ASUH24LPAS - 6 - 3-1. Models: ASUH18LPAS and ASUH24LPAS 3. Wiring diagrams...

  • Page 11: Capacity Table

    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 Indoor temperature °FDB °FWB °FDB...
  • Page 12 ¢ Model: ASUH24LPAS Indoor temperature °FDB °FWB °FDB kBtu kBtu kBtu kBtu kBtu kBtu 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 17.08 11.70 0.53 18.69 12.80 0.53 20.48 14.03 0.54 21.12 14.46...

  • Page 13: Heating Capacity

    4-2. Heating capacity NOTE: Values mentioned in the table are calculated based on the maximum capacity. ¢ Model: ASUH18LPAS Indoor temperature °FDB °FDB °FWB kBtu kBtu kBtu kBtu kBtu 19.63 2.40 19.11 2.45 18.60 2.50 18.09 2.55 17.57 2.60 20.89 2.08...

  • Page 14: Fan Performance

    5. Fan performance 5-1. Air velocity distributions ¢ Model: ASUH18LPAS Fan speed Operation mode Measuring conditions HIGH Unit: ft/s (m/s) (ft) Top view 7 (2.0) 3 (1.0) 2 (0.5) Horizontal louver: Up Vertical louver: Center (ft) Unit: ft/s (m/s) (ft) 7 (2.0)
  • Page 15 ¢ Model: ASUH24LPAS Fan speed Operation mode Measuring conditions HIGH Unit: ft/s (m/s) (ft) Top view 7 (2.0) 3 (1.0) 2 (0.5) Horizontal louver: Up Vertical louver: Center (ft) (ft) Unit: ft/s (m/s) 7 (2.0) 2 (0.5) 3 (1.0) Top view Horizontal louver: Up Vertical louver: Left &...

  • Page 16: Airflow

    5-2. Airflow ¢ Model: ASUH18LPAS  Cooling Fan speed Airflow HIGH QUIET  Heating Fan speed Airflow HIGH QUIET - 12 - 5-2. Airflow 5. Fan performance...
  • Page 17 ¢ Model: ASUH24LPAS  Cooling Fan speed Airflow 1,090 HIGH QUIET  Heating Fan speed Airflow 1,010 HIGH QUIET - 13 - 5-2. Airflow 5. Fan performance...

  • Page 18: Operation Noise (Sound Pressure)

    6. Operation noise (sound pressure) 6-1. Noise level curve ¢ Model: ASUH18LPAS  Cooling  Heating NC-65 NC-65 NC-60 NC-60 NC-55 NC-55 NC-50 NC-50 HIGH HIGH NC-45 NC-45 NC-40 NC-40 NC-35 NC-35 NC-30 NC-30 NC-25 NC-25 NC-20 QUIET NC-20 QUIET...

  • Page 19: Sound Level Check Point

    6-2. Sound level check point Microphone Microphone 40 in (1 m) 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)

  • Page 20: Safety Devices

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

  • Page 21: External Input And Output

    8. External input and output External input and output PCB Indoor unit PCB CN47 (Ext. out) CN65 (Ext. in/out PCB) CN46 (Ext. in) SW301 SW302 Rotary switch CN314 CN313 CN312 CN311 CN310 CN308 Input External input External output Connector Input select signal Operation/Stop CN46...

  • Page 22: External Input

    8-1. External input With using external input function, some functions on this product can be controlled from an external device. • “Operation/Stop” mode or "Forced stop" mode can be selected with function setting of indoor unit. • A twisted pair cable (22AWG) should be used. Maximum length of cable is 492 ft (150 m). •...
  • Page 23 ¢ External Input and Output PCB The indoor unit Operation/Stop can be set by using the input connector on the PCB. • Input select: Use either one of these types of connectors according to the application. (Both types of connec- tors cannot be used simultaneously.) –...

  • Page 24: External Output

    8-2. External output Use an external output cable with appropriate external dimension, depending on the number of ca- bles to be installed. ¢ Indoor unit • A twisted pair cable (22AWG) should be used. Maximum length of cable is 82 ft (25 m). •...
  • Page 25 ¢ External Input and Output PCB • A twisted pair cable (22AWG) should be used. Maximum length of cable is 82 ft (25 m). • Output voltage: High DC 12 V±2 V, Low 0 V. • Permissible current: 50 mA •...

  • Page 26: Combination Of External Input And Output

    8-3. Combination of external input and output By combining the function setting of the indoor unit and rotary switch setting of the External Input and Output PCB, you can select various combinations of functions. Combination examples of external input and output are as follows: External input Indoor unit External Input and Output PCB...
  • Page 27 External output Indoor unit External Input and Output PCB Function Rotary Mode setting CN47 CN310 CN311 CN312 External heater Indoor unit fan 60-11 Operation/Stop Error status output operation status NOTE: Input of Operation/Stop depends on the setting of function setting 46. 00: Operation/Stop mode 1 (R.C.

  • Page 28: Details Of Function

    8-4. Details of function ¢ Control input function • When function setting is “Operation/Stop” mode 1 – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting Input and Output PCB Off → On Operation External Input and 46-00...
  • Page 29 • When function setting is “Forced stop” mode – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting Input and Output PCB Off → On Forced stop External Input and 46-02 CN313 Output PCB On →...
  • Page 30 • When function setting is “Operation/Stop” mode 2 – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting Input and Output PCB Off → On Operation Stop External Input and 46-03 CN313 (Remote Output PCB On →...
  • Page 31 • Forced thermostat off function Rotary SW on External External input Input signal Command Input and Output PCB Off → On Thermostat off External Input and Output PCB CN313 On → Off Normal operation Input Compressor Room temp. Set temp. ¢...
  • Page 32 • Indoor unit fan operation status Rotary SW on External Output External output Command Input and Output PCB signal Off → On Fan run CN312 On → Off Fan stop Off → On Fan run External Input and Output PCB CN311 On →...
  • Page 33 ¢ External heater output Function setting Indoor unit Wired R. C. Control Primary heater Auxiliary heater Control switching external heaters Sensor activation* No. 61 Auxiliary heater Heat pump 61-00 — External device* control 1 Auxiliary heater Heat pump External device 61-01 —...
  • Page 34 • Inappropriate designing and installation of external heater may cause a fire by emitted heat from the external heater. • Fujitsu General Ltd. is not responsible for inappropriate designing or installation of external heating device.  Auxiliary heater control 1...
  • Page 35  Heat pump prohibition control Perform heating by external heater only. Indoor unit is continuous thermostat off. Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
  • Page 36  Auxiliary heater control by outdoor temperature 1 This control selects heat pump or external heater according to the outdoor temperature. When out- door temperature is high, the heating is performed by using heat pump only. Operation Condition Heater on Heater is on as shown in following diagram of heating temperature.
  • Page 37 • Operation status 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Heat pump Heat pump Combination zone prohibition only zone Outdoor temperature zone * zone Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 38  Auxiliary heater control by outdoor temperature 2 This control selects heat pump or external heater according to the outdoor temperature. Even when outdoor temperature is high, the heating is performed by using both of heat pump and external heater. Operation Condition Heater on...
  • Page 39 • Operation status 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Heat pump Combination zone Outdoor temperature zone * prohibition zone Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 40  Auxiliary heater control by outdoor temperature 3 This control selects heat pump or external heater according to the outdoor temperature. Even when outdoor temperature is high, the heating is performed by using both of heat pump and external heater. Operation Condition Heater on...
  • Page 41 • Operation status Heat pump only zone 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 42  Auxiliary heat pump control • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. • Other than heating mode Heater off •...
  • Page 43  Auxiliary heat pump control by outdoor temperature 1 • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
  • Page 44 • Operation status 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Heat pump Combination zone Outdoor temperature zone * prohibition zone Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 45  Auxiliary heat pump control by outdoor temperature 2 • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
  • Page 46 • Operation status Heat pump prohibition zone 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 47  Auxiliary heat pump control by outdoor temperature 3 • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
  • Page 48 • Operation status Heat pump prohibition zone 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 49 ¢ Heating thermostat on for humidifier Indoor unit Function External output setting Situation Mode Rotary SW Heating Indoor unit fan Heating thermostat on operation thermostat on no. 60 status 60-05 CN47 Example of 60-06 CN312 individual Not used 60-07 CN311 connection 60-08 CN310...

  • Page 50: Group Connection

    9. Group connection NOTE: Group control cannot be used together with Wireless LAN adapter. Installation procedure for group control system: A number of indoor units can be operated at the same time using a single remote controller. NOTE: When different type of indoor units (such as wall mounted type and cassette type, cassette type and duct type, or other combinations) are connected using group control system, some functions may no longer be available.

  • Page 51: Remote Controller

    10. Remote controller 10-1. Wireless remote controller ¢ Overview a MODE button • Switches operation mode (AUTO, COOL, DRY, FAN, and HEAT). • Starts/ends the remote controller custom code (max. 4 types) change. b FAN SPEED button • Press the FAN SPEED button while the air conditioner is operating, to control fan speed.
  • Page 52 To facilitate explanation, the accompanying illustration has been drawn to show all possible indicators; in actual operation, however, the display will only show those indicators appropriate to the current op- eration. - 48 - 10-1. Wireless remote controller 10. Remote controller...
  • Page 53 ¢ Specifications  Controller Unit: in (mm) Top view 1-3/4 (45) 11/16 (17.5) Front view Side view Size (H × W × D) in (mm) 6-3/8 × 1-3/4 × 11/16 (162 × 45 × 17) Weight oz (g) 2.3 (65.5) (without batteries) ...

  • Page 54: Function Settings

    11. Function settings To adjust the functions of this product according to the installation environment, various types of function settings are available. NOTE: Incorrect settings can cause a product malfunction. 11-1. Function settings by using remote controller Some function settings can be changed on the remote controller. After confirming the setting proce- dure and the content of each function setting, select appropriate functions for your installation envi- ronment.
  • Page 55 STEP 2: Selecting the function number and setting value 1. Press the TEMP./SELECT ( ) buttons to select the function Function number number. To switch between the left and right digits, press the MODE button. 2. Press the FAN SPEED button to proceed the setting value. To re- turn the function number selection, press the FAN SPEED button again.
  • Page 56 ¢ Contents of function setting Each function setting listed in this section is adjustable in accordance with the installation environ- ment. NOTE: Setting will not be changed if invalid numbers or setting values are selected.  Function setting list Function no. Functions Filter sign 30/31...
  • Page 57 2) Room temperature control for indoor unit sensor NOTE: Before performing this setting, refer to Function 95. Depending on the installed environment, correction of the room temperature sensor may be re- quired. Select the appropriate control setting according to the installed environment. The temperature of the room temperature sensor is corrected as follows: Corrected temp.
  • Page 58 3) Room temperature control for wired remote controller sensor NOTE: Before performing this setting, refer to Function 95. Depending on the installed environment, correction of the wire remote temperature sensor may be required. Select the appropriate control setting according to the installed environment. To change this setting, set Function 42 to “Both“...
  • Page 59 6) Remote controller custom code (Only for wireless remote controller) The indoor unit custom code can be changed. Select the appropriate custom code. Function number Setting value Setting description Factory setting ♦ 7) External input control "Operation/Stop" mode or "Forced stop" mode can be selected. Function number Setting value Setting description...
  • Page 60 10) Switching functions for external output terminal Functions of the external output terminal can be switched. For details, refer to “External input and output”. Function number Setting value Setting description Factory setting Operation status ♦ 01—04 Cooling thermostat On Heating operation Operation/Stop 07—08 Cooling thermostat On...
  • Page 61 13) Outdoor temperature zone boundary temperature A Setting required if changing of the outdoor temperature setting for heat pump prohibition zone is re- quired when auxiliary heater control by outdoor temperature 1 and 2 are performed on the indoor unit. For details, refer to “External heater output” in Chapter 8-4. "Details of function"...
  • Page 62 16) Heat pump backup setting Enables or disables the heat pump backup instruction from the outdoor unit. This function will be usable provided that the corresponding outdoor unit is connected. Function number Setting value Setting description Factory setting Disable ♦ Enable 17) Emergency heat for external output terminal Enables or disables emergency heat input.

  • Page 63: 11-2.Custom Code Setting For Wireless Remote Controller

    11-2. Custom code setting for wireless remote controller To interconnect the air conditioner and the wireless remote controller, assignment of the custom code for the wireless remote controller is required. NOTE: Air conditioner cannot receive a signal if the air conditioner has not been set for the custom code.

  • Page 64: Accessories

    12. Accessories 12-1. Models: ASUH18LPAS and ASUH24LPAS Part name Exterior Q’ty Part name Exterior Q’ty Operating manual Tapping screw (large) Installation manual Tapping screw (small) Remote controller Battery Remote controller Wall hook bracket holder Cloth tape Ion deodorization filter Filter holder...

  • Page 65: Optional Parts

    13. Optional parts 13-1. Controllers Exterior Part name Model name Summary Easy finger touch operation with LCD panel. Backlit LCD enables easy operation in a dark room. Wire type: Non-polar 2-wire Optional communication kit is necessary for installation. NOTE: When this remote controller is connected, wireless remote controller cannot be Office...

  • Page 66: 13-2.Others

    FGL sales company. For connection between indoor unit Modbus UTY-VMSX with UART interface and a Modbus Converter open network. This converter can control Fujitsu Thermostat UTY-TTRX General products using a third-party Converter thermostat controller. This converter is required when...

  • Page 67: Part 2. Outdoor Unit

    Part 2. OUTDOOR UNIT SINGLE TYPE: AOUH18LPAS1 AOUH24LPAS1...

  • Page 68: Specifications

    1. Specifications Type Inverter heat pump Model name AOUH18LPAS1 AOUH24LPAS1 Power supply 208/230 V ~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V Starting current 11.4 Cooling 1,348 (2,290) 1,560 (2,650) Airflow rate CFM (m Heating 1,348 (2,290) 1,560 (2,650) Type ×...

  • Page 69: Dimensions

    2. Dimensions 2-1. Models: AOUH18LPAS1 and AOUH24LPAS1 Unit: in (mm) 4-M10 hole 22-13/16 (580) 4-5/16 (109) Pitch of bolts for installation Top view 3/4 (19) 31-7/16 (799) 2-11/16 (68) 1/2 (13) 11-7/16 (290) 1-5/16 (33) 1-3/16 (30) Side view Front view Side view Airflow 15-11/16 (399)

  • Page 70: Installation Space

    3. Installation space 3-1. Models: AOUH18LPAS1 and AOUH24LPAS1 ¢ Space requirement Provide sufficient installation space for product safety. CAUTION Keep the space shown in the installation examples. If the installation is not performed accordingly, it could cause a short circuit and result in a lack of operating performance.
  • Page 71  Multiple outdoor unit installation • Provide at least 10 in (250 mm) of space between the outdoor units if multiple units are in- stalled. • When routing the piping from the side of an outdoor unit, provide space for piping. •...
  • Page 72  Outdoor units installation in multi-row Unit: in (mm) Single parallel unit arrangement Multiple parallel unit arrangement 4 (100) or more 8 (200) or more 40 (1,000) 80 (2,000) or more or more 8 (200) or more 16 (400) or more 20 (500) or more 40 (1,000) or more 8 (200) or more...

  • Page 73: Refrigerant Circuit

    4. Refrigerant circuit 4-1. Models: AOUH18LPAS1 and AOUH24LPAS1 Heat exchanger 3-way (INDOOR) valve 2-way Muffler valve Muffler Strainer 4-way valve Expansion valve Accumulator Heat exchanger Strainer (OUTDOOR) Cooling Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature) : Thermistor (Room temperature)

  • Page 74: Wiring Diagrams

    5. Wiring diagrams 5-1. Models: AOUH18LPAS1 and AOUH24LPAS1 - 70 - 5-1. Models: AOUH18LPAS1 and AOUH24LPAS1 5. Wiring diagrams...

  • Page 75: Capacity Compensation Rate For Pipe Length And Height Difference

    6. Capacity compensation rate for pipe length and height difference Height difference H Indoor unit is higher than outdoor unit Indoor unit is lower than outdoor unit Outdoor unit Indoor unit Outdoor unit Indoor unit Connection pipe Connection pipe 6-1. Models: AOUH18LPAS1 and AOUH24LPAS1 NOTE: Values mentioned in the table are calculated based on the maximum capacity.

  • Page 76: Additional Charge Calculation

    7. Additional charge calculation 7-1. Models: AOUH18LPAS1 and AOUH24LPAS1 Refrigerant type R410A lb oz 2 lb 16 oz Refrigerant amount 1,350 ¢ Refrigerant charge 49 or less 66 (Max.) Total pipe length 0.22 oz/ft 15 or less 20 (Max.) (20 g/m) Additional charge - 72 - 7-1.

  • Page 77: Airflow

    8. Airflow 8-1. Model: AOUH18LPAS1  Cooling 2,290 1,348  Heating 2,290 1,348 8-2. Model: AOUH24LPAS1  Cooling 2,650 1,560  Heating 2,650 1,560 - 73 - 8-1. Model: AOUH18LPAS1 8. Airflow...

  • Page 78: Operation Noise (Sound Pressure)

    9. Operation noise (sound pressure) 9-1. Noise level curve ¢ Model: AOUH18LPAS1  Cooling  Heating NC-65 NC-65 NC-60 NC-60 NC-55 NC-55 NC-50 NC-50 NC-45 NC-45 NC-40 NC-40 NC-35 NC-35 NC-30 NC-30 NC-25 NC-25 NC-20 NC-20 NC-15 NC-15 1,000 2,000 4,000 8,000 1,000...

  • Page 79: Sound Level Check Point

    9-2. Sound level check point Rear Microphone Microphone Airflow 40 in (1 m) Side view Rear view NOTE: Detailed shape of the actual outdoor unit might be slightly different from the one illustrated above. - 75 - 9-2. Sound level check point 9.

  • Page 80: Electrical Characteristics

    10. Electrical characteristics Model name AOUH18LPAS1 AOUH24LPAS1 Voltage 208/230~ Power supply Frequency MCA *1 14.7 17.2 Starting current 11.4 MAX. CKT. BKR *3 Power cable Wiring Size spec. *2 Connection Limited cable *4 wiring ft (m) 69 (21) length *1: Minimum Circuit Ampacity (Calculation based on UL60335-2-40) *2: Selected sample based on Japan Electrotechnical Standards and Codes Committee E0005.

  • Page 81: Safety Devices

    11. Safety devices Model Type of Protection form protection AOUH18LPAS1 AOUH24LPAS1 250 V, 20 A Circuit Current fuse (Main PCB) protection 250 V, 5 A 257±18 °F (125±10 °C) Activate Fan motor stop Fan motor Thermal protection program protection 248±18 °F (120±10 °C) Reset Fan motor restart 226 °F (108 °C)

  • Page 82: Accessories

    12. Accessories 12-1. Models: AOUH18LPAS1 and AOUH24LPAS1 Part name Exterior Q’ty Part name Exterior Q’ty Installation manual Cable tie Drain pipe - 78 - 12-1. Models: AOUH18LPAS1 and AOUH24LPAS1 12. Accessories...

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