Fujitsu AOU48RGLX Design & Technical Manual
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Fujitsu AOU48RGLX Design & Technical Manual

Fujitsu AOU48RGLX Design & Technical Manual

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AIR CONDITIONER
Cassette type
DESIGN & TECHNICAL MANUAL
INDOOR
OUTDOOR
AUU18RGLX
AUU24RGLX
AUU30RGLX
AUU36RGLX
AUU42RGLX
AUU48RGLX
AOU18RGLX
AOU24RGLX
AOU30RGLX
AOU36RGLX
AOU42RGLX
AOU48RGLX
DR_AU016EF_03
2020.05.29

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  • Page 1 AIR CONDITIONER Cassette type DESIGN & TECHNICAL MANUAL INDOOR AUU18RGLX AUU24RGLX AUU30RGLX AUU36RGLX AUU42RGLX AUU48RGLX OUTDOOR AOU18RGLX AOU42RGLX AOU24RGLX AOU48RGLX AOU30RGLX AOU36RGLX DR_AU016EF_03 2020.05.29...
  • Page 2 Notices: • Product specifications and design are subject to change without notice for future improvement. • For further details, please check with our authorized dealer. Copyright © 2018, 2020 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: AUU18RGLX and AUU24RGLX.................6 2-2. Models: AUU30RGLX, AUU36RGLX, AUU42RGLX, and AUU48RGLX ......7 2-3. Installation space requirement ..................8 3. Wiring diagram ....................10 3-1. Models: AUU18RGLX, AUU24RGLX, AUU30RGLX, AUU36RGLX, AUU42RGLX, and AUU48RGLX ........................10 4.
  • Page 4 Part 2. OUTDOOR UNIT..............81 1. Specifications....................82 2. Dimensions....................84 2-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX.......84 2-2. Models: AOU42RGLX and AOU48RGLX ..............85 3. Installation space ..................86 3-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX.......86 3-2. Models: AOU42RGLX and AOU48RGLX ..............90 4. Refrigerant circuit ..................93 4-1.
  • Page 5 CONTENTS (continued) 14. Accessories ....................119 14-1.Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX....119 14-2.Models: AOU42RGLX and AOU48RGLX ..............119 15. Optional parts....................120...

  • Page 7: Part 1. Indoor Unit

    Part 1. INDOOR UNIT CASSETTE TYPE: AUU18RGLX AUU24RGLX AUU30RGLX AUU36RGLX AUU42RGLX AUU48RGLX...

  • Page 8: Specifications

    1. Specifications Cassette Type Inverter heat pump Model name AUU18RGLX AUU24RGLX 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 1.58—6.30 1.58—8.50 Min.—Max. Btu/h 5,400—21,500 5,400—29,000 6.15 7.91...
  • Page 9 Cassette Type Inverter heat pump Model name AUU18RGLX AUU24RGLX 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). –...
  • Page 10 Cassette Type Inverter heat pump Model name AUU30RGLX AUU36RGLX AUU42RGLX AUU48RGLX Power supply 208/230 V ~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V 8.79 10.55 12.31 14.07 Rated Btu/h 30,000 36,000 42,000 48,000 Cooling 2.81—10.26 2.81—11.43 5.01—13.19 5.01—14.65...
  • Page 11 Cassette Type Inverter heat pump Model name AUU30RGLX AUU36RGLX AUU42RGLX AUU48RGLX 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). –...

  • Page 12: Dimensions

    2. Dimensions 2-1. Models: AUU18RGLX and AUU24RGLX Unit: in (mm) 31-5/16 (796) Hanging bolt position 37-3/8 (950) 13-7/16 (342) Drain hose View A 13-7/16 (342) 11-9/16 1-3/4 (293) (45) 1-9/16 (40) 5-8/16 Ceiling Wire hole (140) 3-15/16 (100) 3-15/16 (100) 9-5/16 (237) Fresh air inlet (cut out)

  • Page 13: Models: Auu30Rglx, Auu36Rglx, Auu42Rglx, And Auu48Rglx

    2-2. Models: AUU30RGLX, AUU36RGLX, AUU42RGLX, and AUU48RGLX 31-5/16 (796) Hanging bolt position 37-3/8 (950) 13-7/16 (342) Drain hose View A 13-7/16 (342) 11-9/16 1-3/4 1-9/16 (40) (293) (45) 5-8/16 (140) Ceiling Wire hole 9-5/16 3-15/16 (100) 3-15/16 (100) (237) 3-1/4 (83) 3-1/4 (83) Fresh air inlet (cut out) 1-9/16...

  • Page 14: Installation Space Requirement

    2-3. Installation space requirement Provide sufficient installation space for product safety. For 4-direction setting: • Models: AUU18RGLX and AUU24RGLX Unit: in (mm) Strong and durable ceiling 11 (256) or more 60 (1,500) 119 (3,000) or more or more Ceiling height Ceiling mode* “Low”...
  • Page 15 For 3-direction setting: Unit: in (mm) 4 (100) or more* NOTES: • To set “3-direction”, optional Air outlet shutter plate (UTR-YDZK) must be installed, and the “out- let-direction” need to be switched to “3-way” by remote controller. *: When installing the indoor unit, be careful about the maintenance space. •...

  • Page 16: Wiring Diagram

    3. Wiring diagram 3-1. Models: AUU18RGLX, AUU24RGLX, AUU30RGLX, AUU36RGLX, AUU42RGLX, and AUU48RGLX - 10 - 3-1. Models: AUU18RGLX, AUU24RGLX, AUU30RGLX, AUU36RGLX, AUU42RGLX, and 3. Wiring diagram AUU48RGLX...

  • Page 17: Capacity Table

    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.
  • Page 18 ¢ Model: AUU24RGLX Indoor temperature °FDB °FWB °FDB kBtu kBtu kBtu kBtu kBtu kBtu 20.45 15.81 0.33 22.78 15.89 0.33 24.32 17.31 0.33 25.87 18.72 0.34 27.42 18.66 0.34 28.98 19.86 0.34 19.99 15.64 0.58 22.26 15.72 0.59 23.78 17.12 0.60 25.29 18.52...
  • Page 19 ¢ Model: AUU30RGLX Indoor temperature °FDB °FWB °FDB kBtu kBtu kBtu kBtu kBtu kBtu 26.62 21.14 0.43 29.66 21.27 0.43 31.69 23.17 0.43 33.71 25.06 0.42 35.74 24.97 0.42 37.74 26.57 0.43 26.01 20.87 0.89 28.98 21.00 0.90 30.96 22.87 0.90 32.94 24.74...
  • Page 20 ¢ Model: AUU36RGLX 1,118 Indoor temperature °FDB °FWB °FDB kBtu kBtu kBtu kBtu kBtu kBtu 30.68 25.32 0.59 34.16 25.46 0.60 36.48 27.73 0.60 38.80 29.99 0.61 41.13 29.89 0.61 43.46 31.81 0.62 29.99 25.05 1.11 33.40 25.19 1.13 35.66 27.43 1.14 37.93...
  • Page 21 ¢ Model: AUU42RGLX 1,177 Indoor temperature °FDB °FWB °FDB kBtu kBtu kBtu kBtu kBtu kBtu 32.16 25.58 1.12 35.82 25.72 1.13 38.26 28.02 1.15 40.70 30.28 1.15 43.15 30.18 1.17 45.61 32.14 1.18 31.86 25.49 1.19 35.49 25.62 1.21 37.91 27.91 1.22 40.32...
  • Page 22 ¢ Model: AUU48RGLX 1,236 Indoor temperature °FDB °FWB °FDB kBtu kBtu kBtu kBtu kBtu kBtu 35.71 28.50 1.77 39.81 28.66 1.80 42.52 31.23 1.82 45.23 33.77 1.83 47.94 33.64 1.85 50.65 35.85 1.87 35.58 28.40 1.80 39.66 28.56 1.84 42.36 31.12 1.85 45.06...

  • Page 23: Heating Capacity

    4-2. Heating capacity NOTE: Values mentioned in the table are calculated based on the maximum capacity. ¢ Model: AUU18RGLX Indoor temperature °FDB °FDB °FWB kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h 16.54 2.19 16.15 2.24 15.75 2.28 15.37 2.33 14.98 2.37 19.06 2.21 18.61 2.25...
  • Page 24 ¢ Model: AUU30RGLX Indoor temperature °FDB °FDB °FWB kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h 25.20 3.15 24.60 3.22 23.99 3.28 23.42 3.35 22.81 3.41 29.04 3.18 28.34 3.24 27.65 3.31 26.99 3.37 26.29 3.44 30.61 3.19 29.88 3.25 29.15 3.32 28.41 3.38 27.68 3.45...
  • Page 25 ¢ Model: AUU42RGLX 1,177 Indoor temperature °FDB °FDB °FWB kBtu/h kBtu/h kBtu/h kBtu/h kBtu/h 34.89 4.21 34.05 4.29 33.23 4.39 32.39 4.47 31.58 4.56 37.81 4.21 36.90 4.30 36.01 4.39 35.10 4.47 34.22 4.57 42.37 4.21 41.37 4.30 40.36 4.38 39.35 4.47 38.34...

  • Page 26: Fan Performance

    5. Fan performance 5-1. Air velocity distributions ¢ Model: AUU18RGLX (4-way air outlet) Fan speed Operation mode Measuring conditions HIGH (ft) 7 (2) Unit: ft/s (m/s) 2 (0.5) 7 (2) 7 (2) 2 (0.5) 2 (0.5) 3 (1) 3 (1) (0.25) Top view Vertical airflow direction louver: position 1...
  • Page 27 ¢ Model: AUU24RGLX (4-way air outlet) Fan speed Operation mode Measuring conditions HIGH (ft) 7 (2) Unit: ft/s (m/s) 2 (0.5) 7 (2) 7 (2) (0.25) 2 (0.5) 2 (0.5) 3 (1) 3 (1) Top view Vertical airflow direction louver: position 1 (0.25) 7 (2) 2 (0.5)
  • Page 28 ¢ Model: AUU30RGLX (4-way air outlet) Fan speed Operation mode Measuring conditions HIGH (ft) 7 (2) Unit: ft/s (m/s) (0.5) 7 (2) 7 (2) 2 (0.5) 2 (0.5) 3 (1) 3 (1) (0.25) Top view Vertical airflow direction louver: position 1 (0.25) 7 (2) 2 (0.5)
  • Page 29 ¢ Model: AUU36RGLX (4-way air outlet) Fan speed Operation mode Measuring conditions HIGH (ft) Unit: ft/s (m/s) (0.5) 7 (2) 7 (2) 7 (2) 3 (1) (0.25) 2 (0.5) 3 (1) 2 (0.5) (0.25) Top view Vertical airflow direction louver: position 1 7 (2) 2 (0.5) (ft)
  • Page 30 ¢ Model: AUU42RGLX (4-way air outlet) Fan speed Operation mode Measuring conditions HIGH Unit: ft/s (m/s) 7 (2) (ft) (0.5) 7 (2) 7 (2) (0.25) 2 (0.5) 3 (1) 2 (0.5) 3 (1) (0.25) Top view Vertical airflow direction louver: position 1 7 (2) (0.5) (ft)
  • Page 31 ¢ Model: AUU48RGLX (4-way air outlet) Fan speed Operation mode Measuring conditions HIGH Unit: ft/s (m/s) (ft) 7 (2) (0.5) 7 (2) 7 (2) (0.25) (0.25) 2 (0.5) 3 (1) 3 (1) 2 (0.5) Top view Vertical airflow direction louver: position 1 7 (2) (0.5) (ft)
  • Page 32 ¢ Model: AUU18RGLX (3-way air outlet) Fan speed Operation mode Measuring conditions HIGH Unit: ft/s (m/s) 7 (2) (ft) (0.5) 7 (2) 7 (2) (0.25) 2 (0.5) 3 (1) 3 (1) 2 (0.5) (0.25) Top view Vertical airflow direction louver: position 1 (ft) (ft) Unit: ft/s (m/s)
  • Page 33 ¢ Model: AUU24RGLX (3-way air outlet) Fan speed Operation mode Measuring conditions HIGH 7 (2) Unit: ft/s (m/s) (ft) (0.5) 7 (2) 7 (2) (0.25) 2 (0.5) 3 (1) 3 (1) 2 (0.5) (0.25) Top view Vertical airflow direction louver: position 1 (ft) (ft) Unit: ft/s (m/s)
  • Page 34 ¢ Model: AUU30RGLX (3-way air outlet) Fan speed Operation mode Measuring conditions HIGH 7 (2) (ft) Unit: ft/s (m/s) (0.5) Top view (0.25) 2 (0.5) 3 (1) 7 (2) 7 (2) 3 (1) 2 (0.5) (0.25) Vertical airflow direction louver: position 1 (ft) (ft) Unit: ft/s (m/s)
  • Page 35 ¢ Model: AUU36RGLX (3-way air outlet) Fan speed Operation mode Measuring conditions HIGH 7 (2) Unit: ft/s (m/s) (ft) (0.5) (0.25) (0.25) Top view 2 (0.5) 3 (1) 7 (2) 7 (2) 3 (1) 2 (0.5) Vertical airflow direction louver: position 1 (ft) (ft) Unit: ft/s (m/s)
  • Page 36 ¢ Model: AUU42RGLX (3-way air outlet) Fan speed Operation mode Measuring conditions HIGH (ft) 7 (2) Unit: ft/s (m/s) (0.5) (0.25) (0.25) 2 (0.5) 3 (1) 3 (1) Top view 7 (2) 2 (0.5) 7 (2) Vertical airflow direction louver: position 1 (ft) (ft) Unit: ft/s (m/s)
  • Page 37 ¢ Model: AUU48RGLX (3-way air outlet) Fan speed Operation mode Measuring conditions HIGH Unit: ft/s (m/s) (ft) 7 (2) (0.5) (0.25) (0.25) 2 (0.5) 2 (0.5) 3 (1) 3 (1) 7 (2) Top view 7 (2) Vertical airflow direction louver: position 1 (ft) (ft) Unit: ft/s (m/s)

  • Page 38: Airflow

    5-2. Airflow ¢ Model: AUU18RGLX (4-way outlet)  Cooling/Heating Fan speed Airflow 1,050 HIGH QUIET ¢ Model: AUU24RGLX (4-way outlet)  Cooling/Heating Fan speed Airflow 1,150 HIGH 1,050 QUIET - 32 - 5-2. Airflow 5. Fan performance...
  • Page 39 ¢ Model: AUU30RGLX (4-way outlet)  Cooling/Heating Fan speed Airflow 1,600 HIGH 1,400 1,270 1,150 QUIET ¢ Model: AUU36RGLX (4-way outlet)  Cooling/Heating Fan speed Airflow 1,900 HIGH 1,118 1,590 1,420 1,180 QUIET ¢ Model: AUU42RGLX (4-way outlet)  Cooling/Heating Fan speed Airflow 2,000...
  • Page 40 ¢ Model: AUU48RGLX (4-way outlet)  Cooling/Heating Fan speed Airflow 2,100 HIGH 1,236 1,780 1,048 1,600 1,320 QUIET - 34 - 5-2. Airflow 5. Fan performance...
  • Page 41 ¢ Model: AUU18RGLX (3-way outlet)  Cooling/Heating Fan speed Airflow HIGH QUIET ¢ Model: AUU24RGLX (3-way outlet)  Cooling/Heating Fan speed Airflow 1,000 HIGH QUIET ¢ Model: AUU30RGLX (3-way outlet)  Cooling/Heating Fan speed Airflow 1,390 HIGH 1,220 1,100 1,000 QUIET - 35 - 5-2.
  • Page 42 ¢ Model: AUU36RGLX (3-way outlet)  Cooling/Heating Fan speed Airflow 1,660 HIGH 1,390 1,240 1,030 QUIET ¢ Model: AUU42RGLX (3-way outlet)  Cooling/Heating Fan speed Airflow 1,740 HIGH 1,024 1,440 1,270 1,130 QUIET ¢ Model: AUU48RGLX (3-way outlet)  Cooling/Heating Fan speed Airflow 1,830...
  • Page 43 - 37 - 5-2. Airflow 5. Fan performance...

  • Page 44: Fresh-Air Characteristics

    5-3. Fresh-air characteristics ¢ Airflow volume: static pressure of fresh-air intake characteristics 0.48 (120) 0.40 (100) Duct 0.32 (80) Inside diameter: ø 3-3/4 in (95 mm) 0.24 (60) Duct fan 0.16 (40) Static pressure required 0.08 (20) to take in fresh-air (10) (20) (30)

  • Page 45: Duct Connection

    5-4. Duct connection ¢ Outlet air Duct (inside size: 13-3/4 × 3-15/16 in [350 × 100 mm])  Model: AUU18RGLX 0.40 (100) 0.32 (80) 0.24 (60) L= 3ft 3-3/8in (1m) L= 16ft 4-27/32in 0.16 (40) Fan Speed (5 m) Quiet 1-way L= 32ft 9-11/16in Fan Speed Fan Speed...
  • Page 46  Model: AUU36RGLX 0.40 (100) 0.32 (80) Fan Speed High 1-way 0.24 (60) L= 3ft 3-3/8in (1m) Fan Speed High 2-way L= 16ft 4-27/32in 0.16 (40) (5 m) Fan Speed L= 32ft 9-11/16in Quiet 1-way (10m) 0.08 (20) Fan Speed Quiet 2-way (71) (141)
  • Page 47 ¢ Precautions on air-outlet duct connection • Connect the air-outlet duct to maximum 2 directions among the 4-duct connecting directions. CAUTION Do not connect ducts at 3 or more directions. • When installing air-outlet duct in 2 directions, connect the ducts in a straight line. Air-outlet duct Close Close...

  • Page 48: Operation Noise (Sound Pressure)

    6. Operation noise (sound pressure) 6-1. Noise level curve ¢ Model: AUU18RGLX  Cooling  Heating NC-65 NC-65 NC-60 NC-60 NC-55 NC-55 NC-50 NC-50 NC-45 NC-45 High NC-40 NC-40 High NC-35 NC-35 NC-30 NC-30 Quiet NC-25 NC-25 Quiet NC-20 NC-20 NC-15 NC-15 1,000...
  • Page 49 ¢ Model: AUU30RGLX  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 Quiet Quiet 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 50 ¢ Model: AUU42RGLX  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 Quiet NC-25 NC-25 Quiet 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 51: Sound Level Check Point

    6-2. Sound level check point Microphone 60 in (1.5 m) Microphone - 45 - 6-2. Sound level check point 6. Operation noise (sound pressure)

  • Page 52: Safety Devices

    7. Safety devices Model Type of protection Protection form AUU18-48RGLX Current fuse Circuit protection 250 V, 3.15 A (PCB*) 257 ± 18 °F (125 ± 10 °C) Activate Fan motor stop Fan motor Thermal protection protection program 248 ± 18 °F (120 ± 10 °C) Reset Fan motor restart *: Printed Circuit Board...

  • Page 53: External Input And Output

    8. External input and output Rotary switch CN65 CN47 (Ext.in/out PCB) (Ext.out) Terminal (Ext.in) Fig. Indoor unit PCB Fig. External input and output PCB External Input connect kit External input External output Connector Input select signal (Optional parts) Operation/Stop Terminal Dry contact Edge Operation status...

  • Page 54: 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 (22AWG) should be used. Maximum length of cable is 492 ft (150 m). • The wire connection should be separate from the power cable line. ¢...

  • Page 55: 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 56: 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 External input Function...
  • Page 57 External output External input Function and output Indoor unit Mode External input and output PCB setting PCB (Rotary Output CN47 Output 1 Output 2 Output 3 Indoor unit fan 60-00 Operation/Stop Operation/Stop Error status operation status Indoor unit fan External heater 60-00 Operation/Stop Error status...
  • Page 58 ¢ 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 59: 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 Rotary SW of Function External input and External input Input signal Command setting / output PCB Off → On Operation Input of indoor unit Terminal...
  • Page 60  When function setting is "Forced stop" mode • In the case of "Edge" input Rotary SW of Function External input and External input Input signal Command setting / output PCB Off → On Forced stop Input of indoor unit Terminal On →...
  • Page 61  When function setting is "Operation/Stop" mode 2 • In the case of "Edge" input Rotary SW of Function External input and External input Input signal Command setting / output PCB Off → On Operation Input of indoor unit Terminal Stop (R.C.
  • Page 62 ¢ Forced thermostat off function Function Rotary SW of External External input Input signal Command setting / input and output PCB 60-00 / 2 60-02 / 4 60-05 / 7 Off → On Thermostat off 60-06 / 8 External input and output Input 1 60-08 / A 60-09 / B...
  • Page 63 ¢ Error status Function Rotary SW of External External output Output signal Command setting / input and output PCB Low → High Error 60-09 / B Output of indoor unit CN47 High → Low Normal 60-00 / 2 Off → On Error 60-01 / 3 60-02 / 4...
  • Page 64 ¢ Indoor unit fan operation status Function Rotary SW of External External output Output signal Command setting / input and output PCB Low → High Fan run 60-10 / C Output of indoor unit CN47 High → Low Fan stop 60-00 / 2 Off →...
  • Page 65 Return air • 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. - 59 - 8-4.
  • Page 66  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 67  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 68  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 69 • 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 70  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 71 • 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 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 72 ¢ 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 Output3 individual Not used 60-07 Output2 connection 60-08 Output1...

  • Page 73: Function Settings

    9. 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. 9-1. Function settings on indoor unit By using some components on the PCB, you can change the function settings. ¢...
  • Page 74 ¢ DIP switch setting • SW100: Remote controller address setting NOTE: Because this setting is normally done automatically when 2-core wired remote con- troller is installed, setting is unnecessary. Multiple indoor units can be operated by using one wired remote controller. Set the unit number of each indoor unit.

  • Page 75: Contents Of Function Setting

    9-2. 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 Ceiling height...
  • Page 76 3) Outlet directions Select the appropriate number of outlet directions according to the installation conditions. Function number Setting value Setting description Factory setting 4-way ♦ 3-way 4) Vertical airflow direction range control To prevent draft, change the setting to "Upward" (01). Note that the airflow in certain usage conditions may leave the ceiling dirty.
  • Page 77 5) 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 78 6) 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 79 9) 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 ♦ 10) External input control "Operation/Stop" mode or "Forced stop" mode can be selected. Function number Setting value Setting description...
  • Page 80 13) 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 81 16) 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” on page 2. Function number Setting value Setting description...

  • Page 82: Accessories

    10. Accessories Part name Exterior Q’ty Part name Exterior Q’ty Installation manual Insulation Operating manual Drain hose Template (Carton top) Hose band Drain hose heat Washer insulation Coupler heat insulation Cable tie (Large) (Large) Coupler heat insulation Cable tie (Small) (Small) - 76 - 10.

  • Page 83: Optional Parts

    11. Optional parts 11-1. 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: 11-2.Cassette Grille

    11-2. Cassette grille Exterior Part name Model name Summary This cassette grille to blow airflow in Cassette grille UTG-GCGF 360º direction by unique seamless airflow louver design. This cassette grille to blow airflow in 360º direction by unique seamless Cassette grille UTG-LCGVCB airflow louver design.
  • Page 85 Wireless LAN UTY-TFSXZ2 smartphones and tablets. adapter For connection indoor unit with UART interface. This converter can control Fujitsu Thermostat UTY-TTRX General products using a third-party converter thermostat controller. NOTE: Combined use of following optional parts and Wireless LAN adapter (UTY-TFSXZ2) is not allowed.
  • Page 86 - 80 - 11-3. Others 11. Optional parts...

  • Page 87: Part 2. Outdoor Unit

    Part 2. OUTDOOR UNIT SINGLE TYPE: AOU18RGLX AOU24RGLX AOU30RGLX AOU36RGLX AOU42RGLX AOU48RGLX...

  • Page 88: Specifications

    1. Specifications Type Inverter heat pump Model name AOU18RGLX AOU24RGLX AOU30RGLX AOU36RGLX Power supply 208/230 V ~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V Starting current 11.5 16.1 Cooling 1,177 (2,000) 2,119 (3,600) 2,119 (3,600) 2,237 (3,800) Airflow rate CFM (m...
  • Page 89 Type Inverter heat pump Inverter heat pump Model name AOU42RGLX AOU48RGLX Power supply 208/230 V ~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V Starting current 16.8 20.9 Cooling 3,973 (6,750) 4,061 (6,900) Airflow rate CFM (m...

  • Page 90: Dimensions

    2. Dimensions 2-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX Unit: in (mm) Top view 1-1/4 3(77) 35-7/16 (900) 13 (330) (12) (31) 15-3/4 (400) Front view Side view 25-5/8 (650) Airflow 5-3/4 (147) 6-3/4 (170) Bottom view - 84 - 2-1.

  • Page 91: Models: Aou42Rglx And Aou48Rglx

    2-2. Models: AOU42RGLX and AOU48RGLX 5-3/16 4-11/16 Unit: in (mm) (132) 25-9/16 (650) (119) 1-3/4 (45) 2-5/8 (66) Top view 35-7/16 (900) 1-1/4 13 (330) (31) (12) Terminal blocks 3-way valve (Liquid) 3-way valve ( Gas ) Ø28 (Ø1-1/8) x 2...

  • Page 92: Installation Space

    3. Installation space 3-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX ¢ Space requirement Provide sufficient installation space for product safety.  Single outdoor unit installation • When the upper space is open: Unit: in (mm) When there are obstacles at the rear only. When there are obstacles at the rear and sides.
  • Page 93 • When there is 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 24 (600) or more...
  • Page 94  Multiple outdoor unit installation • When the upper space is open: Unit: in (mm) When there are obstacles at the rear only. When there are obstacles at the front only. 60 (1,500) or more 10 (250) 12 (300) or more or more When there are obstacles at the front and rear.
  • Page 95  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 79 (2,000) or more 119 (3,000) or more 24 (600) or more 24 (600) or more 60 (1,500) or more 40 (1,000) or more 10 (250) or more...

  • Page 96: Models: Aou42Rglx And Aou48Rglx

    3-2. Models: AOU42RGLX and AOU48RGLX ¢ Space requirement Provide sufficient installation space for product safety.  Single outdoor unit installation • When the upper space is open: Unit: in (mm) When there are obstacles at the rear only. When there are obstacles at the rear and sides.
  • Page 97 • When there is an obstruction in the upper space: Unit: in (mm) When there are obstacles at the rear and above. Max. 11 (300) 60 (1,500) or more 20 (500) or more - 91 - 3-2. Models: AOU42RGLX and AOU48RGLX 3. Installation space...
  • Page 98 Construct a canopy and a pedestal, or place the unit on a high stand that is locally installed. - 92 - 3-2. Models: AOU42RGLX and AOU48RGLX 3. Installation space...

  • Page 99: Refrigerant Circuit

    4. Refrigerant circuit 4-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX Heat exchanger 3-Way ( INDOOR ) valve Muffler 2-Way valve Pressure switch 4-Way valve Strainer Expansion valve Heat exchanger Strainer Pressure ( OUTDOOR ) check valve : Cooling : Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Outdoor temperature)

  • Page 100: Models: Aou42Rglx And Aou48Rglx

    4-2. Models: AOU42RGLX and AOU48RGLX INNER PRESSURE STRAINER MUFFULER SENSOR STRAINER STRAINER FUSIBLE PLUG OUTER SERVICE PORT : Thermistor (Compressor temperature) : Thermistor (Room temperature) : Thermistor (Discharge temperature) : Thermistor (Heat exchanger temperature) : Thermistor (Heat exchanger Med temperature)

  • Page 101: Wiring Diagrams

    5. Wiring diagrams 5-1. Model: AOU18RGLX - 95 - 5-1. Model: AOU18RGLX 5. Wiring diagrams...

  • Page 102: Models: Aou24Rglx, Aou30Rglx, And Aou36Rglx

    5-2. Models: AOU24RGLX, AOU30RGLX, and AOU36RGLX - 96 - 5-2. Models: AOU24RGLX, AOU30RGLX, and AOU36RGLX 5. Wiring diagrams...

  • Page 103: Models: Aou42Rglx And Aou48Rglx

    5-3. Models: AOU42RGLX and AOU48RGLX - 97 - 5-3. Models: AOU42RGLX and AOU48RGLX 5. Wiring diagrams...

  • Page 104: 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: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX NOTE: Values mentioned in the table are calculated based on the maximum capacity.

  • Page 105: Models: Aou42Rglx And Aou48Rglx

    6-2. Models: AOU42RGLX and AOU48RGLX NOTE: Values mentioned in the table are calculated based on the maximum capacity. Pipe length COOLING — — — — 0.879 0.847 0.814 0.782 0.743 — — — 0.927 0.894 0.861 0.828 0.795 0.755 Indoor unit is higher —...

  • Page 106: Additional Charge Calculation

    Total pipe length 0.43 oz/ft 20 or less 50 (Max.) 14.1 28.2 42.3 (40 g/m) Additional charge 1,200 7-3. Models: AOU42RGLX and AOU48RGLX Refrigerant type R410A lb oz 7 lb 10.1oz Refrigerant amount 3,450 ¢ Refrigerant charge 98 or less 246 (Max.)

  • Page 107: Airflow

    8. Airflow 8-1. Model: AOU18RGLX  Cooling 2,000 1,177  Heating 2,530 1,489 8-2. Model: AOU24RGLX  Cooling 3,600 1,000 2,119  Heating 3,600 1,000 2,119 8-3. Model: AOU30RGLX  Cooling 3,600 1,000 2,119  Heating 3,600 1,000 2,119 - 101 - 8-1.

  • Page 108: Model: Aou36Rglx

    2,237  Heating 3,800 1,056 2,237 8-5. Model: AOU42RGLX  Cooling 6,750 1,875 3,973  Heating 6,200 1,722 3,649 8-6. Model: AOU48RGLX  Cooling 6,900 1,917 4,061  Heating 6,950 1.931 4,091 - 102 - 8-4. Model: AOU36RGLX 8. Airflow...

  • Page 109: Operation Noise (Sound Pressure)

    9. Operation noise (sound pressure) 9-1. Noise level curve ¢ Model: AOU18RGLX  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 110 ¢ Model: AOU30RGLX  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 111 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 ¢ Model: AOU48RGLX  Cooling  Heating NC-65 NC-65 NC-60 NC-60 NC-55 NC-55 NC-50 NC-50 NC-45 NC-45 NC-40...

  • Page 112: Sound Level Check Point

    9-2. Sound level check point Rear Microphone Microphone Airflow 40 in (1 m) Side view Rear view 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.

  • Page 113: Electrical Characteristics

    Size 20—16 spec. * Connection Limited cable * wiring ft (m) 167 (51) length Model name Item Unit AOU42RGLX AOU48RGLX Voltage 208/230~ Power supply Frequency MCA *1 25.2 28.3 Starting current 16.8 20.9 MAX. CKT. BKR * Power cable 14—10...

  • Page 114: Safety Devices

    11. Safety devices Model Type of protection Protection form AOU18RGLX Current fuse (Filter PCB) 250 V, 5 A × 2 Circuit protection Current fuse (Main PCB) 250 V, 3.15 A × 2 °F (150 °C) Activate Fan motor stop Fan motor Thermal protection protection °F (120...
  • Page 115 Model Type of protection Protection form AOU42RGLX AOU48RGLX 250 V, 30 A Current fuse (Filter PCB) 250 V, 10 A × 2 Circuit protection 250 V, 5 A Current fuse (Main PCB) 250 V, 3.15 A 252±16°F (122±9 °C) Activate...

  • Page 116: External Input And Output (For 42/48 Model)

    12. External input and output (for 42/48 model) With using external input and output functions, this product can be operated inter-connectedly with an external device. Connector Input Output Remarks CN10 Low noise mode — CN11 Peak cut mode — See external input/output settings for details.
  • Page 117 ¢ 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 118: 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 119 ¢ Compressor status output Signal on compressor operation status is generated when the compressor is running. • Circuit diagram example • 1: Power supply Outdoor unit Voltage (Vcc): DC 24 V or less control PCB Connected unit • 2: Load Connector DC 500 mA or less Power...

  • Page 120: Function Settings (For 42/48 Model)

    13. Function settings (for 42/48 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 121 ¢ Switch buttons and the functions LED lamps Switch buttons LED lamp Function or operation method Lights on while power on. (1) POWER/MODE Green Local setting in outdoor unit or error code is displayed with blink. (2) ERROR Blinks during error operation. (3) PUMP DOWN (L1) Orange Lights on during pump down operation.

  • Page 122: 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 LED lamps Switch buttons Press the MODE switch button (SW1) 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 (SW3).
  • Page 123 Press the ENTER switch button (SW3) and fix it. PEAK CUT (L4) (L5) (L6) MODE 1: Low MODE 2: Lower To return to “Operating status display (Normal operation)”, press the EXIT switch button (SW4). In case of missing how many times you pressed the SELECT and ENTER switch buttons: 1.
  • Page 124 Press the ENTER switch button (SW3). LOW NOISE (L2) (L3) PEAK CUT MODE Sign “ ”: Lights on Press the SELECT switch button (SW2), and adjust the LED lamps as shown below. PEAK CUT (L4) (L5) (L6) Blink 0 % of rated input ratio 50 % of rated input ratio Blink 75 % of rated input ratio...
  • Page 125 14-1. Models: AOU18RGLX, AOU24RGLX, AOU30RGLX, and AOU36RGLX Part name Exterior Q’ty Part name Exterior Q’ty Installation manual Drain cap Drain pipe 14-2. Models: AOU42RGLX and AOU48RGLX Part name Exterior Q’ty Part name Exterior Q’ty Installation manual Drain cap Drain pipe Conduit plate - 119 - 14-1.
  • Page 126 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 42/48 model - 120 - 15. Optional parts...

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