Fujitsu AUXG24KRLB Service manual

AIR CONDITIONER
Cassette type
DESIGN & TECHNICAL MANUAL
INDOOR
AUXG24KRLB
AUXG30KRLB
AUXG36KRLB
AUXG45KRLB
AUXG54KRLB
OUTDOOR
AOYG24KBTB AOYG30KBTB
AOYG36KBTB
AOYG45KBTB
AOYG54KBTB
DR_AU023EF_02
2019.04.26

Notices:
• Product specifications and design are subject to change without notice for future improvement.
• For further details, please check with our authorized dealer.
Trademarks
FGLair™ is trademark of Fujitsu General Limited in the United States, other countries or both.
Google Play™ is trademark of Google Inc.
App Store® is a service mark of Apple Inc., registered in the U.S. and other countries.
Copyright © 2019 Fujitsu General Limited. All rights reserved.

CONTENTS
Part 1. INDOOR UNIT...........................................................................1
1. Specifications................................................................................................2
2. Dimensions....................................................................................................5
2-1. Model: AUXG24KRLB......................................................................................................5
2-2. Models: AUXG30KRLB, AUXG36KRLB, AUXG45KRLB, and AUXG54KRLB.................6
2-3. Installation space requirement .........................................................................................7
3. Wiring diagram ..............................................................................................9
3-1. Models: AUXG24KRLB, AUXG30KRLB, AUXG36KRLB, AUXG45KRLB, and
AUXG54KRLB....................................................................................................................9
4. Capacity table..............................................................................................10
4-1. Cooling capacity.............................................................................................................10
4-2. Heating capacity ............................................................................................................12
5. Fan performance .........................................................................................14
5-1. Air velocity distributions..................................................................................................14
5-2. Airflow ............................................................................................................................24
5-3. Fresh-air characteristics.................................................................................................28
5-4. Duct connection .............................................................................................................29
6. Operation noise (sound pressure).............................................................32
6-1. Noise level curve............................................................................................................32
6-2. Sound level check point .................................................................................................35
7. Safety devices .............................................................................................36
8. External input and output...........................................................................37
8-1. External input.................................................................................................................38
8-2. External output...............................................................................................................39
8-3. Combination of external input and output.......................................................................40
8-4. Details of function ..........................................................................................................42
9. Function settings ........................................................................................48
9-1. Function settings on indoor unit .....................................................................................48
9-2. Function settings by using remote controller..................................................................50
10. Accessories.................................................................................................55
10-1.Models: AUXG24KRLB, AUXG30KRLB, AUXG36KRLB, AUXG45KRLB, and
AUXG54KRLB..................................................................................................................55
11. Optional parts .............................................................................................56
11-1.Controllers ....................................................................................................................56
11-2.Cassette grille ...............................................................................................................57
11-3.Others ...........................................................................................................................58

Part 2. OUTDOOR UNIT.....................................................................61
1. Specifications..............................................................................................62
2. Dimensions..................................................................................................65
2-1. Model: AOYG24KBTB ...................................................................................................65
2-2. Models: AOYG30KBTB and AOYG36KBTB ..................................................................66
2-3. Models: AOYG45KBTB and AOYG54KBTB ..................................................................67
3. Installation space ........................................................................................68
3-1. Model: AOYG24KBTB ...................................................................................................68
3-2. Models: AOYG30KBTB, AOYG36KBTB, AOYG45KBTB, and AOYG54KBTB..............71
4. Refrigerant circuit .......................................................................................74
4-1. Models: AOYG24KBTB and AOYG30KBTB ..................................................................74
4-2. Models: AOYG36KBTB, AOYG45KBTB, and AOYG54KBTB .......................................75
5. Wiring diagrams ..........................................................................................76
5-1. Model: AOYG24KBTB ...................................................................................................76
5-2. Model: AOYG30KBTB ...................................................................................................76
5-3. Model: AOYG36KBTB ...................................................................................................77
5-4. Models: AOYG45KBTB and AOYG54KBTB ..................................................................77
6. Capacity compensation rate for pipe length and height difference........78
6-1. Model: AOYG24KBTB ...................................................................................................78
6-2. Model: AOYG30KBTB ...................................................................................................79
6-3. Model: AOYG36KBTB ...................................................................................................80
6-4. Models: AOYG45KBTB and AOYG54KBTB ..................................................................81
7. Additional charge calculation ....................................................................82
7-1. Model: AOYG24KBTB ...................................................................................................82
7-2. Models: AOYG30KBTB and AOYG36KBTB ..................................................................82
7-3. Models: AOYG45KBTB and AOYG54KBTB ..................................................................82
8. Airflow..........................................................................................................83
8-1. Model: AOYG24KBTB ...................................................................................................83
8-2. Models: AOYG30KBTB and AOYG36KBTB ..................................................................83
8-3. Models: AOYG45KBTB and AOYG54KBTB ..................................................................83
9. Operation noise (sound pressure).............................................................84
9-1. Noise level curve............................................................................................................84
9-2. Sound level check point .................................................................................................87
10. Electrical characteristics............................................................................88
11. Safety devices .............................................................................................89
12. External input and output (30-54 models).................................................91
12-1.External input................................................................................................................91
12-2.External output..............................................................................................................93
13. Function settings (30-54 models) ..............................................................95
13-1.Control PCB and switch buttons location ......................................................................95
CONTENTS (continued)

13-2.Local setting procedure.................................................................................................97
14. Accessories.................................................................................................99
14-1.Model: AOYG24KBTB ..................................................................................................99
14-2.Models: AOYG30KBTB, AOYG36KBTB, AOYG45KBTB, and AOYG54KBTB.............99
15. Optional parts............................................................................................100
CONTENTS (continued)

Part 1. INDOOR UNIT
CASSETTE TYPE:
AUXG24KRLB
AUXG30KRLB
AUXG36KRLB
AUXG45KRLB
AUXG54KRLB

1. Specifications
Type
Cassette
Inverter heat pump
Model name AUXG24KRLB AUXG30KRLB AUXG36KRLB
Power supply 230 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 198—264 V
Capacity
Cooling
Rated kW 6.8 8.5 9.5
Btu/h 23,200 29,000 32,400
Min.—Max. kW 0.90—8.00 2.80—10.00 2.80—11.20
Btu/h 3,100—27,300 9,600—34,100 9,600—38,200
Heating
Rated kW 7.5 10.0 10.8
Btu/h 25,600 34,100 36,850
Min.—Max. kW 0.90—9.10 2.70—11.20 2.70—12.70
Btu/h 3,100—31,000 9,200—38,200 9,200—43,300
Input power
Cooling Rated
kW
1.89 2.44 2.91
Max. 2.94 3.53 4.19
Heating Rated 1.90 2.51 2.45
Max. 2.58 4.17 4.48
Fan
HIGH
W
21 52 87
MED 16 39 52
LOW 13 31 39
QUIET 9 20 23
Current Cooling Rated A 8.3 10.8 12.9
Heating 8.4 11.1 10.9
Power factor Cooling %98.6 98.2 98.0
Heating 98.7 98.2 98.0
EER Cooling kW/kW 3.60 3.49 3.26
COP Heating 3.95 3.98 4.40
Moisture removal L/h (pints/h) 2.7 (4.8) 2.5 (4.4) 3.3 (5.8)
Maximum operating current *1 Cooling A13.6 22.6 22.6
Heating 13.6 22.6 22.6
Fan
Airflow rate
Cooling
HIGH
m3/h
1,150 1,600 1,870
MED 1,050 1,400 1,560
LOW 980 1,270 1,410
QUIET 870 1,150 1,160
Heating
HIGH 1,150 1,600 1,870
MED 1,050 1,400 1,560
LOW 980 1,270 1,410
QUIET 870 1,150 1,160
Type × Q'ty Turbo fan × 1
Motor output W 81
Sound pressure level *2
Cooling
HIGH
dB (A)
35 40 44
MED 33 38 41
LOW 32 36 38
QUIET 29 33 34
Heating
HIGH 35 40 44
MED 33 38 41
LOW 32 36 38
QUIET 29 33 34
Heat exchanger type
Dimensions (H × W × D) mm
Main1: 210 × 2,127 × 13.3
Main2: 210 × 2,061 × 13.3
Main1: 252 × 2,131 × 13.3
Main2: 252 × 2,064 × 13.3
Main3: 252 × 1,999 × 13.3
Fin pitch 1.2 1.3
Rows × Stages 1 × 10 1 × 12 1 × 12
Pipe type Copper tube
Fin type Aluminum
Dimensions
(H × W × D)
Net mm 246 × 840 × 840 288 × 840 × 840
Gross 298 × 960 × 950 340 × 960 × 950
Weight Net kg 24 26 29
Gross 29 32 34
Connection pipe Size Liquid mm (in) Ø 6.35 (Ø 1/4) Ø 9.52 (Ø 3/8) Gas Ø 12.70 (Ø 1/2) Ø 15.88 (Ø 5/8)
Method Flare
Drain hose Material PVC
Size mm Ø 25 (I.D.), Ø 32 (O.D.)
Operation range Cooling °C 18 to 32 %RH 80 or less
Heating °C 16 to 30
Cassette grille
(Option)
Material Polystyrene
Color White
Approximate color of MUNSELL N 9.25/
Dimensions
(H × W × D)
Net mm 53 × 950 × 950
Gross 110 × 1,000 × 1,010
Weight Net kg 6.0
Gross 10.0
Remote control (Option) Wired remote controller, Wireless remote controller, Mobile app*3 (FGLair™)
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 27 °CDB/19 °CWB, and outdoor temperature of 35 °CDB/24 °CWB.
– Heating: Indoor temperature of 20 °CDB/15 °CWB, and outdoor temperature of 7 °CDB/6 °CWB.
– Pipe length: 5 m, Height difference: 0 m. (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: Maximum operating current is the total current of the indoor unit and the outdoor unit.
• *2: Sound pressure level:
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.
• *3: Available on Google Play™ store or on App Store®. Optional WLAN adapter is also required. For details, refer to the setting manual.
- 2 - 1. Specifications
CASSETTE TYPE AUXG24-54KRLB CASSETTE TYPE AUXG24-54KRLB

Specifications for ErP Lot10
Model name AUXG24KRLB AUXG30KRLB AUXG36KRLB
Energy efficiency class Cooling A++
Heating (Average) A+
Pdesign Cooling kW 6.8 (35°C) 8.5 (35°C) 9.5 (35°C)
Heating (Average) 6.0 (-10°C) 8.0 (-10°C) 8.7 (-10°C)
SEER Cooling kWh/kWh 6.60 6.70 6.55
SCOP Heating (Average) 4.20 4.30 4.30
Annual energy consump-
tion
QCE kWh/a 360 444 507
QHE (Average) 1,999 2,601 2,828
Sound power level Cooling HIGH dB (A) 49 54 58
Heating 49 54 58
- 3 - 1. Specifications
CASSETTE TYPE AUXG24-54KRLB CASSETTE TYPE AUXG24-54KRLB

Type
Cassette
Inverter heat pump
Model name AUXG45KRLB AUXG54KRLB
Power supply 230 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 198—264 V
Capacity
Cooling
Rated kW 12.1 13.4
Btu/h 41,300 45,700
Min.—Max. kW 4.00—14.00 4.50—14.50
Btu/h 13,600—47,800 15,400—49,500
Heating
Rated kW 13.5 15.5
Btu/h 46,000 52,900
Min.—Max. kW 4.20—16.20 4.70—16.50
Btu/h 14,300—55,300 16,000—56,300
Input power
Cooling Rated
kW
3.61 4.41
Max. 5.00 5.23
Heating Rated 3.21 4.16
Max. 4.69 4.77
Fan
HIGH
W
106 129
MED 60 95
LOW 45 55
QUIET 30 34
Current Cooling Rated A 16.0 19.5
Heating 14.2 18.4
Power factor Cooling %98.2 98.3
Heating 98.3 98.4
EER Cooling kW/kW 3.35 3.04
COP Heating 4.20 3.73
Moisture removal L/h (pints/h) 4.5 (7.9) 5.0 (8.8)
Maximum operating current *1 Cooling A28.5 28.5
Heating 28.5 28.5
Fan
Airflow rate
Cooling
HIGH
m3/h
2,000 2,100
MED 1,650 1,780
LOW 1,460 1,600
QUIET 1,300 1,320
Heating
HIGH 2,000 2,100
MED 1,650 1,780
LOW 1,460 1,600
QUIET 1,300 1,320
Type × Q'ty Turbo fan × 1
Motor output W 81
Sound pressure level *2
Cooling
HIGH
dB (A)
46 47
MED 42 43
LOW 39 40
QUIET 35 36
Heating
HIGH 46 47
MED 42 43
LOW 39 40
QUIET 35 36
Heat exchanger type
Dimensions (H × W × D) mm
Main1: 252 × 2,131 × 13.3
Main2: 252 × 2,064 × 13.3
Main3: 252 × 1,999 × 13.3
Fin pitch 1.3
Rows × Stages 1× 12
Pipe type Copper tube
Fin type Aluminum
Dimensions
(H × W × D)
Net mm 288 × 840 × 840
Gross 340 × 960 × 950
Weight Net kg 29
Gross 34
Connection pipe Size Liquid mm (in) Ø 9.52 (Ø 3/8) Gas Ø 15.88 (Ø 5/8)
Method Flare
Drain hose Material PVC(VP25)
Size mm Ø 25 (I.D.), Ø 32 (O.D.)
Operation range Cooling °C 18 to 32 %RH 80 or less
Heating °C 16 to 30
Cassette grille
(Option)
Material Polystyrene
Color White
Approximate color of MUNSELL N 9.25/
Dimensions
(H × W × D)
Net mm 53 × 950 × 950
Gross 110 × 1,000 × 1,010
Weight Net kg 6.0
Gross 10.0
Remote control (Option) Wired remote controller, Wireless remote controller, Mobile app*3 (FGLair™)
NOTES:
• Specifications are based on the following conditions:
– Cooling: Indoor temperature of 27 °CDB/19 °CWB, and outdoor temperature of 35 °CDB/24 °CWB.
– Heating: Indoor temperature of 20 °CDB/15 °CWB, and outdoor temperature of 7 °CDB/6 °CWB.
– Pipe length: 5 m, Height difference: 0 m. (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: Maximum operating current is the total current of the indoor unit and the outdoor unit.
• *2: Sound pressure level:
– Measured values in manufacturer’s anechoic chamber.
– Because of the surrounding sound environment, the sound levels measured in actual installation conditions might be higher than the specified values here.
• *3: Available on Google Play™ store or on App Store®. Optional WLAN adapter is also required. For details, refer to the setting manual.
- 4 - 1. Specifications
CASSETTE TYPE AUXG24-54KRLB CASSETTE TYPE AUXG24-54KRLB