Fujitsu General ARXG45KHTB User manual

AIR CONDITIONER
Duct type
SERVICE MANUAL
INDOOR
ARXG45KHTB
ARXG54KHTB
OUTDOOR
AOHG45KRTA
AOHG54KRTA
SR_AR040EG_03
2022.04.07

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 © 2022 Fujitsu General Limited. All rights reserved.

CONTENTS
1. GENERAL INFORMATION
2. TECHNICAL DATA AND PARTS LIST
3. TROUBLESHOOTING
4. CONTROL AND FUNCTIONS
5. FILED WORKING

1. GENERAL INFORMATION
2022.01.24
SR_CH01_AR040EG_01

CONTENTS
1. GENERAL INFORMATION
1. Specifications..............................................................................................01-1
1-1. Indoor unit ......................................................................................................................01-1
1-2. Outdoor unit....................................................................................................................01-2
2. Dimensions..................................................................................................01-3
2-1. Indoor unit ......................................................................................................................01-3
2-2. Outdoor unit....................................................................................................................01-5

1. Specifications
1-1. Indoor unit
Type Duct
Inverter heat pump
Model name ARXG45KHTB ARXG54KHTB
Power supply 3N 400 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 342—457 V
Capacity
Cooling
Rated kW 12.1 13.4
Btu/h 41,300 45,700
Min.—Max. kW 4.0—14.0 5.0—14.5
Btu/h 13,600—47,800 17,100—49,400
Heating
Rated kW 13.5 15.5
Btu/h 46,100 52,900
Min.—Max. kW 5.0—16.2 5.5—18.0
Btu/h 17,100—55,300 18,800—61,400
Input power
Cooling Rated
kW
4.16 4.77
Max. 5.22 5.59
Heating Rated 3.61 4.18
Max. 5.07 5.67
Current Cooling Rated A7.6 8.5
Heating Rated 6.8 7.6
Power factor Cooling %79.4 81.7
Heating 77.4 79.5
EER Cooling kW/kW 2.91 2.81
COP Heating 3.74 3.71
Moisture removal L/h (pints/h) 1.5 (2.6) 2.0 (3.5)
Maximum operating current*1Cooling A14
Heating 14
Fan
Airflow rate
Cooling
HIGH
m3/h
3,350
MED 2,850
LOW 2,430
Heating
HIGH 3,350
MED 2,850
LOW 2,430
Type × Q'ty Sirocco fan × 2
Motor output W 490
Static pressure range Pa 100 to 250
Sound pressure level*2
Cooling
HIGH
dB (A)
47
MED 43
LOW 40
Heating
HIGH 47
MED 43
LOW 40
Heat exchanger type
Dimensions (H × W × D) mm 336 × 890 × 53.2
Fin pitch 1.3
Rows × Stages 4 × 16
Pipe type Copper
Fin type Aluminum
Enclosure Material Steel sheet
Color ―
Dimensions
(H × W × D)
Net mm 400 × 1,050 × 500
Gross 460 × 1,230 × 640
Weight Net kg 46
Gross 51
Connection pipe Size Liquid mm (in) Ø9.52 (3/8)
Gas Ø15.88 (5/8)
Method Flare
Operation range Cooling °C 18 to 32
%RH 80 or less
Heating °C 16 to 30
Drain port Material Steel
Size mm Ø23.4 (I.D.), Ø25.4 (O.D.)
Remote control (Option) Wired remote controller, Wireless remote controller, Simple remote controller, IR Receiver
Unit, 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.)
– Standard static pressure: 100 Pa
• 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.
1-1. Indoor unit - (01-1) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

1-2. Outdoor unit
Type Inverter heat pump
Model name AOHG45KRTA AOHG54KRTA
Power supply 3N 400 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 342—457 V
Starting current A 7.6 8.5
Fan
Airflow rate Cooling m3/h 4,450
Heating 4,450
Type × Q'ty Propeller × 1
Motor output W 120
Sound pressure level *1 Cooling dB (A) 57
Heating 57 59
Sound power level Cooling dB (A) 71 73
Heating 71 73
Heat exchanger type
Dimensions
(H × W × D)
mm
Main1: 966 × 905 × 18.20
Main2: 966 × 905 × 18.20
Sub: 966 × 543 × 18.20
Fin pitch
Main1: 1.45
Main2: 1.45
Sub: 1.45
Rows × Stages
Main1: 1 × 46
Main2: 1 × 46
Sub: 1 × 46
Pipe type Copper
Fin Type (Material) Aluminum
Surface treatment Blue fin
Compressor Type DC Twin rotary
Motor output W 2,180
Refrigerant Type (Global warming potential) R32 (675)
Factory charge g 2,700
Refrigerant oil Type RmM68AF
Amount cm3800
Enclosure
Material Steel sheet
Color Beige
Approximate color of Munsell 10YR 7.5/1.0
Dimensions
(H × W × D)
Net mm 998 × 940 × 320
Gross 1,176 × 1,027 × 445
Weight Net kg 67
Gross 77
Connection pipe
Size Liquid mm (in) Ø 9.52 (3/8)
Gas Ø 15.88 (5/8)
Method Flare
Pre-charge length
m
30
Max. length 50
Max. height difference 30
Operation range Cooling °C -15 to 46
Heating -15 to 24
Drain hose Material LDPE
Tip diameter mm Ø 13.0 (I. D.), Ø 16.0 to Ø 16.7 (O. D.)
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: 5.0 m, Height difference: 0 m. (Between outdoor unit and indoor unit.)
• Protective function might work when using it outside the operation range.
• *1: 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.
• This data is based on EN 14511 standard.
1-2. Outdoor unit - (01-2) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2. Dimensions
2-1. Indoor unit
¢Models: ARXG45KHTB and ARXG54KHTB
Unit: mm
Front view
Top view
Side view (L)
Side view (R)
Rear view
P5 ×120 = 600
585
85
P120 ×2 = 240
108
208
356
371
1,080
1,000
862
126
1,050
851
125
295 26
28
155
14
324
400
123
41
500
139
12-Φ3
Drain
port
71
88
2-1. Indoor unit - (01-3) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

¢Installation space requirement
Provide sufficient installation space for product safety.
NOTE: The detailed component shape depends on the model.
Models: ARXG45KHTB and ARXG54KHTB
Installation by which service space is mode on top of the unit (recommended).
350 or
more
450 or more
(Service space)
Service access
Unit: mm
Installation by which service space is carried out from the bottom of the unit.
20 or
more
450 or more
(Service space)
Service access
Unit: mm
2-1. Indoor unit - (01-4) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION