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Fujitsu ARUH18LUAS Design & Technical Manual
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Fujitsu ARUH18LUAS Design & Technical Manual

Fujitsu ARUH18LUAS Design & Technical Manual

Air conditioner, duct type, refrigerant r410a inverter, indoor/outdoor
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AIR CONDITIONER
Duct type
DESIGN & TECHNICAL MANUAL
INDOOR
OUTDOOR
ARUH18LUAS
ARUH24LUAS
ARUH30LUAS
AOUH18LUAS1
ARUH36LUAS
AOUH24LUAS1
AOUH30LUAS1
AOUH36LUAS1
DR_AR085EF_01
2023.03.31

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Summary of Contents for Fujitsu ARUH18LUAS

  • Page 1 AIR CONDITIONER Duct type DESIGN & TECHNICAL MANUAL INDOOR ARUH18LUAS ARUH36LUAS ARUH24LUAS ARUH30LUAS OUTDOOR AOUH18LUAS1 AOUH24LUAS1 AOUH30LUAS1 AOUH36LUAS1 DR_AR085EF_01 2023.03.31...
  • Page 2 Mobile” is a trademark of FUJITSU GENERAL LIMITED. ™ 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 © 2023 Fujitsu General Limited. All rights reserved.

  • Page 3: Table Of Contents

    CONTENTS Part 1. INDOOR UNIT................1 1. Specifications....................2 2. Dimensions....................6 2-1. Models: ARUH18LUAS, ARUH24LUAS, and ARUH30LUAS ..........6 2-2. Model: ARUH36LUAS......................7 2-3. Installation space requirement ..................8 2-4. Maintenance space requirement..................9 3. Wiring diagrams ..................10 3-1. Models: ARUH18LUAS and ARUH24LUAS ..............10 3-2. Models: ARUH30LUAS and ARUH36LUAS ..............11 4.
  • Page 4 CONTENTS (continued) Part 2. OUTDOOR UNIT..............81 1. Specifications....................82 2. Dimensions....................84 2-1. Model: AOUH18LUAS1 ....................84 2-2. Model: AOUH24LUAS1 ....................85 2-3. Models: AOUH30LUAS1 and AOUH36LUAS1 ..............86 3. Installation space ..................87 3-1. Model: AOUH18LUAS1 ....................87 3-2. Models: AOUH24LUAS1, AOUH30LUAS1, and AOUH36LUAS1 .........90 4. Refrigerant circuit ..................94 4-1.
  • Page 5 CONTENTS (continued) 14-1.Model: AOUH18LUAS1 ....................117 14-2.Models: AOUH24LUAS1, AOUH30LUAS1, and AOUH36LUAS1 ......117 15. Optional parts....................118...

  • Page 7: Part 1. Indoor Unit

    Part 1. INDOOR UNIT ARUH18LUAS ARUH24LUAS ARUH30LUAS ARUH36LUAS...

  • Page 8: Specifications

    1. Specifications Duct Type Inverter, Heat pump Model name ARUH18LUAS ARUH24LUAS ARUH30LUAS Power supply intake Outdoor unit Voltage 208/230 System power supply Frequency Available voltage range 187—253 Indoor unit power supply (from outdoor unit) 208/230 5.02 7.03 8.79 Rated Btu/h...
  • Page 9 Duct Type Inverter, Heat pump Model name ARUH18LUAS ARUH24LUAS ARUH30LUAS NOTES: • Specifications are based on the following conditions: – Cooling: Indoor temperature of 80°FDB/67°FWB (26.67°CDB/19.44°CWB), and outdoor temperature of 95°FDB/75°FWB (35°CDB/23.9°CWB). – Heating: Indoor temperature of 70°FDB/60°FWB (21.11°CDB/15.56°CWB), and outdoor temperature of 47°FDB/43°FWB (8.33°CDB/6.11°CWB).
  • Page 10 Duct Type Inverter, Heat pump Model name ARUH36LUAS Power supply intake Outdoor unit Voltage 208/230 System power supply Frequency Available voltage range 187—253 Indoor unit power supply (from outdoor unit) 208/230 10.55 Rated Btu/h 36,000 Cooling 2.81—11.43 Min.—Max. Btu/h 9,600—39,000 11.14 Rated Btu/h...
  • Page 11 Duct Type Inverter, Heat pump Model name ARUH36LUAS NOTES: • Specifications are based on the following conditions: – Cooling: Indoor temperature of 80°FDB/67°FWB (26.67°CDB/19.44°CWB), and outdoor temperature of 95°FDB/75°FWB (35°CDB/23.9°CWB). – Heating: Indoor temperature of 70°FDB/60°FWB (21.11°CDB/15.56°CWB), and outdoor temperature of 47°FDB/43°FWB (8.33°CDB/6.11°CWB). –...

  • Page 12: Dimensions

    2. Dimensions 2-1. Models: ARUH18LUAS, ARUH24LUAS, and ARUH30LUAS Unit: in (mm) Rear view 40-15/16 (1,040) 2-1/16 11-13/16 (53) 35-1/4 (895) (300) P3-15/16 × 8 = 31-1/2 1-7/8 5-7/8 2-15/16 (47) (P100 × 8 = 800) 7-1/2 (150) (75) Ø4-15/16 (190) (Ø125)

  • Page 13: Model: Aruh36Luas

    2-2. Model: ARUH36LUAS Unit: in (mm) Rear view 56-11/16 (1,440) 2-1/16 11-13/16 51 (1,295) (53) (300) P3-15/16 × 12 = 47-1/4 1-7/8 2-15/16 5-7/8 (47) (P100 × 12 = 1,200) 7-1/2 (75) (150) Ø4-15/16 (190) (Ø125) Control pipe Ø3/16 (Ø4) Liquid Drain pipe...

  • Page 14: Installation Space Requirement

    2-3. Installation space requirement Provide sufficient installation space for product safety. NOTE: The detailed component shape depends on the model. ¢ Models: ARUH18LUAS, ARUH24LUAS, ARUH30LUAS, and ARUH36LUAS Unit: in (mm) 1 (20) or more 6 (150) 12 (300) or more...

  • Page 15: Maintenance Space Requirement

    NOTES: • Do not place any wiring or illumination in the maintenance space, as they will impede service. • The detailed component shape depends on the model. ¢ Models: ARUH18LUAS, ARUH24LUAS, ARUH30LUAS, and ARUH36LUAS Unit: in (mm) • Provide a maintenance access for maintenance purposes.

  • Page 16: Wiring Diagrams

    3. Wiring diagrams 3-1. Models: ARUH18LUAS and ARUH24LUAS - 10 - 3-1. Models: ARUH18LUAS and ARUH24LUAS 3. Wiring diagrams...

  • Page 17: Models: Aruh30Luas And Aruh36Luas

    3-2. Models: ARUH30LUAS and ARUH36LUAS - 11 - 3-2. Models: ARUH30LUAS and ARUH36LUAS 3. Wiring diagrams...

  • Page 18: 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: ARUH18LUAS Indoor temperature °FDB °FWB °FDB...
  • Page 19 ¢ Model: ARUH24LUAS Indoor temperature °FDB °FWB °FDB kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h 19.15 14.76 1.66 21.35 14.83 1.68 22.81 16.15 1.69 24.26 17.47 1.71 25.71 17.40 1.73 27.17 18.53 1.74 19.11 14.72 1.65 21.31 14.79 1.67 22.76 16.11 1.69 24.21 17.43...
  • Page 20 ¢ Model: ARUH30LUAS 1,001 Indoor temperature °FDB °FWB °FDB kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h 25.53 20.31 2.02 28.42 20.44 2.01 30.35 22.25 1.97 32.29 24.06 1.95 34.24 23.96 1.97 36.19 25.53 1.99 25.38 20.25 1.90 28.26 20.38 1.91 30.18 22.18 1.95 32.10...
  • Page 21 ¢ Model: ARUH36LUAS 1,207 Indoor temperature °FDB °FWB °FDB kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h 31.45 27.14 1.80 35.06 27.26 1.82 34.96 25.99 2.36 37.19 28.11 2.39 39.40 28.00 2.41 41.65 29.82 2.43 29.18 23.67 2.33 32.54 23.79 2.35 34.76 25.91 2.37 36.98...

  • Page 22: Heating Capacity

    4-2. Heating capacity NOTE: Values mentioned in the table are calculated based on the maximum capacity. ¢ Model: ARUH18LUAS Indoor temperature °FDB °FDB °FWB kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h 15.11 2.07 14.77 2.11 14.40 2.16 14.03 2.20 13.69 2.24 17.63 2.22...
  • Page 23 ¢ Model: ARUH30LUAS 1,001 Indoor temperature °FDB °FDB °FWB kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h 25.21 3.72 24.60 3.80 24.00 3.88 23.43 3.96 22.82 4.03 29.41 3.86 28.71 3.94 28.00 4.02 27.33 4.10 26.63 4.18 31.66 3.82 30.90 3.90 30.15 3.97 29.39 4.05 28.64...

  • Page 24: Fan Performance

    5. Fan performance NOTE: Airflow and capacity/outlet temperature curve data are measured based on the same condi- tions mentioned in "Specifications". 5-1. Fan performance curve ¢ Model: ARUH18LUAS (inWG) (Pa) Fan performance curve_1 1.20 1.12 1.04 0.96 0.88 Hi (SP mode20) 0.80...
  • Page 25  Characteristics of air volume and capacity • Cooling (CFM) 1,177 1,000 1,500 2,000 Airflow • Heating (CFM) 1,177 1,000 1,500 2,000 Airflow - 19 - 5-1. Fan performance curve 5. Fan performance...
  • Page 26 ¢ Model: ARUH24LUAS (inWG) (Pa) Fan performance curve_1 1.20 1.12 1.04 0.96 0.88 Hi (SP mode20) 0.80 0.72 0.64 SP mode20 upper limit 0.56 0.48 0.40 0.32 0.24 Normal SP upper limit Hi (Normal SP) Qu (SP mode20) 0.16 Normal SP 0.80 lower limit Qu (Normal SP)
  • Page 27  Characteristics of air volume and capacity • Cooling (CFM) 1,177 1,472 1,000 1,500 2,000 2,500 Airflow • Heating (CFM) 1,177 1,472 1,000 1,500 2,000 2,500 Airflow - 21 - 5-1. Fan performance curve 5. Fan performance...
  • Page 28 ¢ Model: ARUH30LUAS (inWG) (Pa) Fan performance curve_1 1.20 1.12 1.04 0.96 0.88 Hi (SP mode20) 0.80 0.72 0.64 SP mode20 upper limit 0.56 0.48 SP mode20 0.40 lower limit 0.32 Qu(SP mode20) 0.24 Hi (Normal SP) Normal SP upper limit 0.16 0.80 Normal SP...
  • Page 29  Characteristics of air volume and capacity • Cooling (CFM) 1,177 1,472 1,000 1,500 2,000 2,500 Airflow • Heating (CFM) 1,177 1,472 1,000 1,500 2,000 2,500 Airflow - 23 - 5-1. Fan performance curve 5. Fan performance...
  • Page 30 ¢ Model: ARUH36LUAS Fan performance curve_1 (inWG) (Pa) 1.20 1.12 1.04 0.96 0.88 Hi (SP mode20) 0.80 0.72 SP mode20 0.64 upper limit 0.56 0.48 SP mode20 0.40 lower limit 0.32 Normal SP Hi (Normal SP) upper limit 0.24 Qu(SP mode20) 0.16 Normal SP 0.80...
  • Page 31  Characteristics of air volume and capacity • Cooling (CFM) 1,177 1,472 1,766 1,000 1,500 2,000 2,500 3,000 Airflow • Heating (CFM) 1,177 1,472 1,766 1,000 1,500 2,000 2,500 3,000 Airflow ¢ Automatic airflow adjustment procedures 1. To start the auto setting, use setting value 32 in function number 26. 2.

  • Page 32: Airflow

    5-2. Airflow ¢ Model: ARUH18LUAS  Cooling Fan speed Airflow 1,050 HIGH QUIET  Heating Fan speed Airflow 1,050 HIGH QUIET - 26 - 5-2. Airflow 5. Fan performance...
  • Page 33 ¢ Model: ARUH24LUAS  Cooling Fan speed Airflow 1,360 HIGH 1,080 QUIET  Heating Fan speed Airflow 1,360 HIGH 1,080 QUIET - 27 - 5-2. Airflow 5. Fan performance...
  • Page 34 ¢ Model: ARUH30LUAS  Cooling Fan speed Airflow 1,700 HIGH 1,001 1,360 1,190 1,070 QUIET  Heating Fan speed Airflow 1,700 HIGH 1,001 1,360 1,190 1,070 QUIET - 28 - 5-2. Airflow 5. Fan performance...
  • Page 35 ¢ Model: ARUH36LUAS  Cooling Fan speed Airflow 2,050 HIGH 1,207 1,640 1,330 1,070 QUIET  Heating Fan speed Airflow 1,850 HIGH 1,089 1,640 1,330 1,070 QUIET - 29 - 5-2. Airflow 5. Fan performance...

  • Page 36: Operation Noise (Sound Pressure)

    6. Operation noise (sound pressure) 6-1. Noise level curve ¢ Model: ARUH18LUAS  Cooling  Heating NC-65 NC-65 NC-60 NC-60 NC-55 NC-55 NC-50 NC-50 NC-45 NC-45 HIGH HIGH NC-40 NC-40 NC-35 NC-35 NC-30 NC-30 NC-25 NC-25 NC-20 NC-20 QUIET NC-15...
  • Page 37 ¢ Model: ARUH30LUAS  Cooling  Heating NC-65 NC-65 NC-60 NC-60 NC-55 NC-55 NC-50 NC-50 HIGH NC-45 NC-45 HIGH NC-40 NC-40 NC-35 NC-35 NC-30 NC-30 NC-25 NC-25 QUIET NC-20 NC-20 QUIET NC-15 NC-15 1,000 2,000 4,000 8,000 1,000 2,000 4,000 8,000 Octave band center frequency, Hz Octave band center frequency, Hz...

  • Page 38: Sound Level Check Point

    6-2. Sound level check point 79 in (2 m) 40 in (1 m) Product Measuring duct Measuring duct (Set the static pressure as rating in this area) Microphone Microphone Front view Side view - 32 - 6-2. Sound level check point 6.

  • Page 39: Safety Devices

    7. Safety devices Model Type of protection Protection form ARUH18LUAS ARUH24LUAS Circuit protection Current fuse (PCB*) 250 V, 5 A 239 ±59°F (115 ±15°C) Activate Fan motor stop Thermal protection program Fan motor protection 158°F (70°C) Reset Fan motor restart Current protection Activate 2.13 A...

  • Page 40: External Input And Output

    8. External input and output CN65 (Remote sensor) Rotary switch CN75 CN48 (IR receiver) CN47 (External out) Terminal (External in) Fig. Indoor unit PCB Fig. External Input and Output PCB Connecting point Input/Output Function Input select Input signal Operation/Stop Terminal Input Dry contact Edge...

  • Page 41: External Input

    8-1. External input • “Operation/Stop” mode or "Forced stop" mode can be selected with function setting of indoor unit. • A twisted pair cable (22 AWG) should be used. Maximum length of cable is 492 ft (150 m). • Use an external input and output cable with appropriate external dimension, depending on the number of cables to be installed.

  • Page 42: Input Signal Type

    ¢ Input signal type • Indoor unit Input signal type is only "Edge". Edge • External Input and Output PCB The input signal type can be selected. Signal type (edge or pulse) can be switched by the DIP switch 2 (SW2) on the External Input and Output PCB.

  • Page 43: 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 (22 AWG) should be used. Maximum length of cable is 82 ft (25 m). •...

  • Page 44: Setting Of External Input And Output

    8-3. Setting of external input and output • Indoor unit Input Connection point Function setting number 46 Function Operation/Stop mode 1 (Setting prohibited) Terminal Forced stop mode Operation/Stop mode 2 Output Connection point Function setting number 60 Function Operation/Stop 01—04 Cooling thermostat On Heating thermostat On Operation/Stop...
  • Page 45 • External Input and Output PCB Switch setting Ex IN Ex OUT Rotary switch Edge Operation/Stop Not available Indoor unit fan Operation/Stop Error status operation Pulse Operation Stop status Indoor unit fan Forced External heater Not available Error status operation thermostat off output status...

  • Page 46: Details Of Control Input Function

    8-4. Details of control input function ¢ Operation/Stop mode 1 • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary switch Off → On Operation — Input of indoor unit Terminal On →...
  • Page 47 ¢ Forced stop • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary switch Forced stop Off → On (R.C. disabled) — Input of indoor unit Terminal Normal On → Off (R.C.

  • Page 48: Operation/Stop Mode

    ¢ Operation/Stop mode 2 • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary switch Operation Off → On (R.C. enabled) — Input of indoor unit Terminal Stop On → Off (R.C.

  • Page 49: Forced Thermostat Off

    ¢ Forced thermostat off External Input and Output External input Input signal Command Rotary switch Off → On Thermostat off External Input and 2, B, C, D Ex IN 1 Output PCB On → Off Normal operation Off → On Thermostat off External Input and 4, 7, 8, A...

  • Page 50: Details Of Control Output Function

    8-5. Details of control output function ¢ Operation status External Input and Function Output PCB External output Output signal Status setting Rotary switch Off → On Operation 60-00 — Output of indoor unit CN47 60-06 On → Off Stop Off → On Operation External Input and —...

  • Page 51: Indoor Unit Fan Operation Status

    ¢ Indoor unit fan operation status External Input and Function Output PCB External output Output signal Status setting Rotary switch Off → On Fan run 60-10 — Output of indoor unit CN47 On → Off Fan stop Off → On Fan run External Input and —...

  • Page 52: External Heater Output

    ¢ External heater output External Input and Function Output PCB External output Output signal Control setting Rotary switch Off → On Heater on 60-11 — Output of indoor unit CN47 On → Off Heater off Off → On Heater on External Input and —...

  • Page 53: Operation

    • Design and install external heater appropriately with considering its protection. • 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 heat- ing device. - 47 - 8-5.
  • Page 54  Auxiliary equipment control by room temperature Auxiliary equipment control is switchable by room temperature. Auxiliary equipment switching is per- formed for each room temperature divided to following 3 zones. Zone A Ts +0.9°F (0.5 °C) Ts: Setting temperature Ts -0.9°F (-0.5 °C) Tr: Room temperature Zone B Zone C...

  • Page 55: Auxiliary Heater Control

     Auxiliary heater control 1 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 • Error occurred •...
  • Page 56  Heat pump prohibition control Perform heating by external heater only. Indoor unit is continuous thermostat off. Operation Condition Heater is on as shown in following diagram of heating Heater on temperature. DIP-SW101-3 • Heater is off as shown in following diagram of heating temperature.
  • Page 57  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 is on as shown in following diagram of heating Heater on temperature.
  • Page 58 • 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 zone Outdoor temperature zone* Comp. On/Off 12 V Heater DIP-SW101-3: On DIP-SW101-3: Off *: 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 59  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 60 • 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 prohibition zone Outdoor temperature zone * Comp. On/Off 12 V Heater DIP-SW101-3 On DIP-SW101-3 Off * 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 61  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 62 • 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 DIP-SW101-3 On DIP-SW101-3 Off *: 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 63  Auxiliary heat pump control • External heater output Operation Condition Heater is on as shown in following diagram of heating Heater on temperature. DIP-SW101-3 • Heater is off as shown in following diagram of heating temperature. • Other than heating mode Indoor unit fan •...
  • Page 64  Auxiliary heat pump control by outdoor temperature 1 • External heater output Operation Condition Heater is on as shown in following diagram of heating Heater on temperature. DIP-SW101-3 • Heater is off as shown in following diagram of heating temperature.
  • Page 65 • Outdoor temperature zone Outdoor temp. Combination zone     ( Heat pump + Heater) A + 3.6°F ( 2°C): -0.4°F (-18°C) *A: -4°F (-20°C)   Heater only zone   *: Adjustable by function setting 66 • Operation status 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting)
  • Page 66  Auxiliary heat pump control by outdoor temperature 2 • External heater output Operation Condition Heater is on as shown in following diagram of heating Heater on temperature. DIP-SW101-3 • Heater is off as shown in following diagram of heating temperature.
  • Page 67 • Outdoor temperature zone Outdoor temp. Heater only zone B + 3.6°F (2°C): 46.4°F (8°C) *B: 42.8°F (6°C) Combination zone (Heat pump + Heater) *: Adjustable by function setting 67 • 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)
  • Page 68  Auxiliary heat pump control by outdoor temperature 3 • External heater output Operation Condition Heater is on as shown in following diagram of heating Heater on temperature. DIP-SW101-3 • Heater is off as shown in following diagram of heating temperature.
  • Page 69 • Outdoor temperature zone Outdoor temp. Heater only zone     B + 3.6°F (2°C): 46.4°F (8°C) B: 42.8°F (6°C)*   Combination zone   (Heat pump + Heater) A + 3.6°F (2°C): -0.4°F (-18°C) A: -4°F (-20°C)*   Heater only zone  ...

  • Page 70: Heating Thermostat On For Humidifier

    ¢ 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 Output 3 individual Not used 60-07 Output 2 connection 60-08...

  • Page 71: Group Connection

    9. Group connection NOTE: Group control cannot be used together with WLAN 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 72: Function Settings

    10. 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. 10-1. Function settings on indoor unit (setting by DIP switch) By using some components on the PCB, you can change the function settings.

  • Page 73: 10-2.Function Settings By Using Remote Controller

    10-2. 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. ¢ Setting procedure by using remote controller Remote controller is not attached for this product.

  • Page 74: Static Pressure

    2) Static pressure Select the appropriate static pressure according to the installation conditions. Function number Setting value Setting description Factory setting 0.12 inWG (30 Pa) 0.16 inWG (40 Pa) 0.20 inWG (50 Pa) 0.24 inWG (60 Pa) 0.28 inWG (70 Pa) 0.32 inWG (80 Pa) 0.36 inWG (90 Pa) 0.40 inWG (100 Pa)
  • Page 75 3) Room temperature control for indoor unit sensor 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 76: Auto Restart

    4) Room temperature control for wired remote controller sensor 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“ (01). Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
  • Page 77 7) Cold air prevention This setting is to disable the cold air prevention function during heating operation. When disabled, the fan setting will always follow the setting on the remote controller. (Excluding defrost mode) Function number Setting value Setting description Factory setting Enable ♦...
  • Page 78 11) 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 79 13) Operating temperature switching of external heaters Sets the temperature conditions when the external heater is ON. For details, refer to “External heater output” in "Details of control output function" on page 44. Setting description Setting value of function 61: Function Setting Factory...
  • Page 80 15) Outdoor temperature zone boundary temperature B Setting required if changing of the outdoor temperature setting for heat pump only zone is required when auxiliary heater control by outdoor temperature 1 and 3 is performed on the indoor unit. For details, refer to “External heater output” in "Details of control output function"...
  • Page 81 19) Fan delay time Sets the fan delay time when the heater is turned off. Function number Setting value Setting description Factory setting 1 minute ♦ 50 seconds 40 seconds 30 seconds 20) External heater use in defrosting Enables or disables external heater use in defrosting. NOTE: Inappropriate heater selection may cause cold air in defrosting.

  • Page 82: Accessories

    Operation manual Cable tie (large) Installation manual Cable tie (medium) (indoor unit) Washer Drain hose insulation Coupler heat insulation Drain hose (large) Coupler heat insulation Hose band (small) - 76 - 11-1. Models: ARUH18LUAS, ARUH24LUAS, ARUH30LUAS, and ARUH36LUAS 11. Accessories...

  • Page 83: Optional Parts

    12. Optional parts 12-1. Controllers Exterior Part name Model name Summary Easy finger touch operation with LCD Office Fri 10:00AM Mode Set Temp. Wired Remote panel. Backlit LCD enables easy Cool 80°F Custom Auto Auto Heat 74°F UTY-RNRUZ* Cool 84°F Room Temp.

  • Page 84: 12-2.Others

    12-2. Others Exterior Part name Model name Summary Thermo-sensor for sensing the Remote Sensor UTY-XSZXZ* temperature of arbitrary place in the Unit room. Long-life Filter can be mounted to the Long-life Filter UTD-LFNB indoor unit. (For 18-30 model) Long-life Filter can be mounted to the Long-life Filter UTD-LFNA indoor unit.
  • Page 85 Exterior Part name Model name Summary This converter can control Fujitsu General products using a third-party Thermostat UTY-TTRXZ* thermostat controller. Converter Connecting point: Terminal block (Y1, Y2) on Main PCB This converter is required when connecting single split system to VRF...
  • Page 86 - 80 - 12-2. Others 12. Optional parts...

  • Page 87: Part 2. Outdoor Unit

    Part 2. OUTDOOR UNIT SINGLE TYPE: AOUH18LUAS1 AOUH24LUAS1 AOUH30LUAS1 AOUH36LUAS1...

  • Page 88: Specifications

    1. Specifications Type Inverter, Heat pump Model name AOUH18LUAS1 AOUH24LUAS1 Power supply 208/230 V~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V Starting current 10.3 Cooling 1,395 (2,370) 2,187 (3,715) Airflow rate CFM (m Heating 1,460 (2,480) 2,187 (3,715) Type ×...
  • Page 89 Type Inverter, Heat pump Model name AOUH30LUAS1 AOUH36LUAS1 Power supply 208/230 V~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V Starting current 13.4 16.5 Cooling 2,301 (3,910) 2,502 (4,250) Airflow rate CFM (m Heating 2,219 (3,770) 2,431 (4,130) Type ×...

  • Page 90: Dimensions

    2. Dimensions 2-1. Model: AOUH18LUAS1 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 Hole Hole...

  • Page 91: Model: Aouh24Luas1

    2-2. Model: AOUH24LUAS1 Unit: in (mm) 5-13/16 25-9/16 (650) 5-5/8 (147) (143) 3-way valve (Gas) 3-way valve (Liquid) 1-1/4 (48) Liquid Top view Detail A Detail B 12-5/8 (320) 37 (940) 1-9/16 (40) 9/16 (14) 2-Ф7/8 (22) Cable port 2-Ф7/8 (22) Cable port 2-Ф1/8 (28) Cable port...

  • Page 92: Models: Aouh30Luas1 And Aouh36Luas1

    2-3. Models: AOUH30LUAS1 and AOUH36LUAS1 Unit: in (mm) 5-13/16 5-5/8 (147) 25-9/16 (650) (143) 1-7/8 (48) 1-3/8 (35.7) Top view 37 (940) 1-9/16 12-5/8 (320) 3/16 (40) 3-way valve (Liquid) 3-way valve (Gas) 2-Ф7/8 (22) 2-Ф7/8 (22) Cable port Cable port 2-Ф1/8 (28) Cable port 2-Ф1/8 (28)

  • Page 93: Installation Space

    3. Installation space 3-1. Model: AOUH18LUAS1 ¢ 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 94: Multiple Outdoor Unit Installation

     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 95: Outdoor Units Installation In Multi-Row

     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 96: Models: Aouh24Luas1, Aouh30Luas1, And Aouh36Luas1

    3-2. Models: AOUH24LUAS1, AOUH30LUAS1, and AOUH36LUAS1 ¢ 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 97 • When an obstruction in the upper space: Unit: in (mm) When there are obstacles at the rear When there are obstacles at the rear, sides, and and above. above. Max. 19 Max. 19 (500) (500) 40 (1,000) or more 40 (1,000) or more 20 (500)
  • Page 98  Multiple outdoor unit installation • Provide at least 250 mm of space between the outdoor units if multiple units are installed. • When routing the piping from the side of an outdoor unit, provide space for piping. • No more than 3 units must be installed side by side. When 4 units or more are arranged in a line, provide the space as shown in the following ex- ample “When an obstruction in the upper space:”.

  • Page 99: Outdoor Unit Installation In Multi-Row

     Outdoor unit installation in multi-row Unit: in (mm) Single parallel unit arrangement Multiple parallel unit arrangement 6 (150) or more 20 (500) or more 119 (3,000) or more 138 (3,500) or more 24 (600) or more 24 (600) or more 60 (1,500) or more 60 (1,500) or more 10 (250) or more...

  • Page 100: Refrigerant Circuit

    4. Refrigerant circuit 4-1. Model: AOUH18LUAS1 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 (Heat exchanger middle temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature)

  • Page 101: Model: Aouh24Luas1

    4-2. Model: AOUH24LUAS1 Heat exchanger 3-way 3-way (INDOOR) valve valve Pressure switch 4-way valve Strainer Expansion valve Strainer Heat exchanger (OUTDOOR) : Cooling : Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Heat exchanger middle temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature) : Thermistor (Room temperature)

  • Page 102: Models: Aouh30Luas1 And Aouh36Luas1

    4-3. Models: AOUH30LUAS1 and AOUH36LUAS1 Heat exchanger 3-way 3-way (INDOOR) valve valve Pressure switch 4-way valve Strainer Expansion valve Strainer Heat exchanger (OUTDOOR) : Cooling : Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Heat exchanger middle temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature)

  • Page 103: Wiring Diagrams

    5. Wiring diagrams 5-1. Model: AOUH18LUAS1 - 97 - 5-1. Model: AOUH18LUAS1 5. Wiring diagrams...

  • Page 104: Models: Aouh24Luas1, Aouh30Luas1, And Aouh36Luas1

    5-2. Models: AOUH24LUAS1, AOUH30LUAS1, and AOUH36LUAS1 - 98 - 5-2. Models: AOUH24LUAS1, AOUH30LUAS1, and AOUH36LUAS1 5. Wiring diagrams...

  • Page 105: 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. Model: AOUH18LUAS1 NOTE: Values mentioned in the table are calculated based on the maximum capacity.

  • Page 106: Models: Aouh24Luas1, Aouh30Luas1, And Aouh36Luas1

    6-2. Models: AOUH24LUAS1, AOUH30LUAS1, and AOUH36LUAS1 NOTE: Values mentioned in the table are calculated based on the maximum capacity. Pipe length COOLING — — — — 0.913 0.899 0.881 — — — 0.941 0.929 0.914 0.896 Indoor unit is higher than outdoor —...

  • Page 107: Model: Aouh18Luas1

    7. Additional charge calculation 7-1. Model: AOUH18LUAS1 Refrigerant type R410A lb oz 2 lb 12 oz Refrigerant amount 1,250 ¢ Refrigerant charge 66 or less 98 (Max.) Total pipe length 0.22 oz/ft 20 or less 30 (Max.) (20 g/m) Additional charge 7-2.

  • Page 108: Airflow

    8. Airflow 8-1. Model: AOUH18LUAS1  Cooling 2,370 1,395  Heating 2,480 1,460 8-2. Model: AOUH24LUAS1  Cooling 3,715 1,032 2,187  Heating 3,715 1,032 2,187 8-3. Model: AOUH30LUAS1  Cooling 3,910 1,086 2,301  Heating 3,770 1,047 2,219 - 102 - 8-1.

  • Page 109: Model: Aouh36Luas1

    8-4. Model: AOUH36LUAS1  Cooling 4,250 1,181 2,502  Heating 4,130 1,147 2,431 - 103 - 8-4. Model: AOUH36LUAS1 8. Airflow...

  • Page 110: Operation Noise (Sound Pressure)

    9. Operation noise (sound pressure) 9-1. Noise level curve ¢ AOUH18LUAS1  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 2,000...
  • Page 111 ¢ AOUH30LUAS1  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 2,000 4,000 8,000 Octave band center frequency, Hz Octave band center frequency, Hz ¢...

  • Page 112: 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. - 106 - 9-2. Sound level check point 9.

  • Page 113: Electrical Characteristics

    10. Electrical characteristics Model name AOUH18LUAS1 AOUH24LUAS1 Voltage 208/230 Power supply Frequency 18.1 19.2 MCA * Starting current 10.3 MAX. CKT. BKR* Power cable Wiring Cross-sectional spec.* Connection area cable* Limited wiring ft (m) 102 (31) 167 (51) length Model name AOUH30LUAS1 AOUH36LUAS1 Voltage...

  • Page 114: Safety Devices

    11. Safety devices Model Type of Protection form protection AOUH18LUAS1 AOUH24LUAS1 250 V, 20 A Circuit Current fuse (PCB*) 250 V, 5 A 250 V, 3.15 A protection 250 V, 3.15 A 250 V, 10 A × 2 257 ±18°F 251.6 ±16.2°F (125 ±10°C) (122 ±9°C)

  • Page 115: External Input And Output (For 24-36 Model)

    12. External input and output (for 24-36 model) With using external input and output functions, this product can be operated inter-connectedly with an external device. Connector Input Output Remarks P580 Low noise mode — PA580 Peak cut mode — See external input/output settings for details.

  • Page 116: Peak Cut Mode

    ¢ Peak cut mode By performing following on-site work, operation that suppresses the current value can be enabled: The air conditioner is set to the “Peak cut mode” when closing the contact input of a commercial timer or on/off switch to a connector on the control PCB of the outdoor unit. •...

  • Page 117: 12-2.External Output

    12-2. External output With using external output function, some status signals are transmitted to the control PCB, and the related LED lamp indicates the status of this product. ¢ Error status output Signal on air conditioner error status is generated when a malfunction occurs. •...

  • Page 118: Compressor Status Output

    ¢ Compressor status output Signal on compressor operation status is generated when the compressor is running. • Circuit diagram example • Output voltage (Vcc): DC 12 V Outdoor unit 50 mA or less control PCB Connected unit (Locally purchased) • *: Make the distance from the Example: Connector Example: Fan...

  • Page 119: Function Settings (For 24-36 Model)

    13. Function settings (for 24-36 model) Perform appropriate function setting locally according to the installation environment. NOTE: Incorrect settings can cause a product malfunction. CAUTION • Before setting up the switch buttons, discharge the static electricity from your body. • Never touch the terminals or the patterns on the parts that are mounted on the PCB. 13-1.

  • Page 120: Switch Buttons And The Functions

    ¢ Switch buttons and the functions LED lamps S134 S133 S132 S131 S130 Switch buttons LED lamp Function or operation method Lights on while power on. (1) POWER/MODE Green Blinks to show the local setting on the outdoor unit or the error code. (2) ERROR Blinks during error operation.

  • Page 121: 13-2.Local Setting Procedure

    13-2. Local setting procedure NOTE: Before performing the function setting, be sure to stop the operation of the air conditioner. ¢ Low noise mode Press the MODE switch button (S134) for 3 seconds or more to switch to “Local setting mode”. After confirming the LED lamp of POWER/MODE blinks 9 times, press the ENTER switch but- ton (S132).
  • Page 122 ¢ Peak cut mode Press the MODE switch button (S134) for 3 seconds or more to switch to “Local setting mode”. After confirming the LED lamp of POWER/MODE blinks 9 times, press the ENTER switch but- ton (S132). PUMP POWER LOW NOISE PEAK CUT DOWN...

  • Page 123: Accessories

    14. Accessories 14-1. Model: AOUH18LUAS1 Part name Exterior Part name Exterior Installation manual Cable tie Drain pipe Drain cap 14-2. Models: AOUH24LUAS1, AOUH30LUAS1, and AOUH36LUAS1 Part name Exterior Part name Exterior Installation manual Drain cap Drain pipe - 117 - 14-1.

  • Page 124: Optional Parts

    15. Optional parts Exterior Part name Model name Summary Use to operate the external input and External UTY-XWZXZ3 output functions of outdoor unit. Connect Kit (for 24-36 model) - 118 - 15. Optional parts...

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