Fujitsu General ARXG36KHTAP Service manual

AIR CONDITIONER
Duct type
DESIGN & TECHNICAL MANUAL
INDOOR
ARXG36KHTAP
ARXG45KHTAP
ARXG54KHTAP
OUTDOOR
AOHG36KRTA AOHG45KRTA
AOHG54KRTA
DR_AR040EG_03
2020.11.19

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 © 2020 Fujitsu General Limited. All rights reserved.

CONTENTS
Part 1. INDOOR UNIT...........................................................................1
1. Specifications................................................................................................2
2. Dimensions....................................................................................................4
2-1. Models: ARXG36KHTAP, ARXG45KHTAP, and ARXG54KHTAP ..................................4
2-2. Installation space requirement .........................................................................................5
2-3. Maintenance space requirement......................................................................................6
3. Wiring diagrams ............................................................................................7
3-1. Models: ARXG36KHTAP, ARXG45KHTAP, and ARXG54KHTAP ..................................7
4. Capacity table................................................................................................8
4-1. Cooling capacity...............................................................................................................8
4-2. Heating capacity ..............................................................................................................9
5. Fan performance .........................................................................................10
5-1. Fan performance curve..................................................................................................10
5-2. Airflow ............................................................................................................................14
6. Operation noise (sound pressure).............................................................17
6-1. Noise level curve............................................................................................................17
6-2. Sound level check point .................................................................................................18
7. Safety devices .............................................................................................19
8. External input and output...........................................................................20
8-1. External input.................................................................................................................20
8-2. External output...............................................................................................................22
8-3. Combination of external input and output.......................................................................23
8-4. Details of function ..........................................................................................................25
9. Function settings .......................................................................................31
9-1. Function settings on indoor unit .....................................................................................31
9-2. Function settings by using remote controller..................................................................33
10. Accessories.................................................................................................39
11. Optional parts .............................................................................................40
11-1.Controllers ....................................................................................................................40
11-2.Others ...........................................................................................................................41

Part 2. OUTDOOR UNIT.....................................................................43
1. Specifications..............................................................................................44
2. Dimensions..................................................................................................46
2-1. Models: AOHG36KRTA .................................................................................................46
2-2. Models: AOHG45KRTA and AOHG54KRTA .................................................................47
3. Installation space ........................................................................................48
3-1. Models: AOHG36KRTA, AOHG45KRTA, and AOHG54KRTA ......................................48
4. Refrigerant circuit .......................................................................................51
4-1. Models: AOHG36KRTA, AOHG45KRTA, and AOHG54KRTA ......................................51
5. Wiring diagrams ..........................................................................................52
5-1. Model: AOHG36KRTA ...................................................................................................52
5-2. Models: AOHG45KRTA and AOHG54KRTA .................................................................52
6. Capacity compensation rate for pipe length and height difference........53
6-1. Model: AOHG36KRTA ...................................................................................................53
6-2. Models: AOHG45KRTA and AOHG54KRTA .................................................................54
7. Additional charge calculation ....................................................................55
7-1. Model: AOHG36KRTA ...................................................................................................55
7-2. Models: AOHG45KRTA and AOHG54KRTA .................................................................55
8. Airflow..........................................................................................................56
8-1. Models: AOHG36KRTA .................................................................................................56
8-2. Models: AOHG45KRTA and AOHG54KRTA .................................................................56
9. Operation noise (sound pressure).............................................................57
9-1. Noise level curve............................................................................................................57
9-2. Sound level check point .................................................................................................58
10. Electrical characteristics............................................................................59
11. Safety devices .............................................................................................60
12. External input and output ..........................................................................61
12-1.External input................................................................................................................61
12-2.External output..............................................................................................................63
13. Function settings .......................................................................................65
13-1.Control PCB and switch buttons location ......................................................................65
13-2.Local setting procedure.................................................................................................67
14. Accessories.................................................................................................69
14-1.Models: AOHG36KRTA, AOHG45KRTA, and AOHG54KRTA .....................................69
15. Optional parts..............................................................................................70
CONTENTS (continued)

Part 1. INDOOR UNIT
DUCT TYPE:
ARXG36KHTAP
ARXG45KHTAP
ARXG54KHTAP

1. Specifications
Type
Duct
Inverter heat pump
Model name ARXG36KHTAP ARXG45KHTAP ARXG54KHTAP
Power supply 3N 400 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 342—457 V
Capacity
Cooling
Rated kW 9.5 12.1 13.4
Btu/h 32,400 41,300 45,700
Min.—Max. kW 2.8—11.2 4.0—14.0 4.5—14.5
Btu/h 9,600—38,200 13,600—47,800 15,400—49,500
Heating
Rated kW 10.8 13.5 15.5
Btu/h 36,900 46,100 52,900
Min.—Max. kW 2.7—12.7 4.2—16.2 4.7—16.5
Btu/h 9,200—43,300 14,300—55,300 16,000—56,300
Input power
Cooling Rated
kW
2.86 3.53 4.42
Max. 4.12 4.88 5.23
Heating Rated 2.48 3.37 3.89
Max. 4.53 4.74 4.83
Fan
HIGH
W
150 225 225
MED 90 135 135
LOW 60 90 90
QUIET 45 70 70
Current Cooling Rated A 5.50 6.60 8.00
Heating 4.90 6.40 7.20
Power factor Cooling %75.0 77.2 80.4
Heating 73.9 76.6 78.4
EER Cooling kW/kW 3.32 3.43 3.03
COP Heating 4.35 4.01 3.98
Moisture removal L/h (pints/h) 2.0 (3.5) 2.6 (4.6) 3.7 (6.5)
Maximum operating current *1 Cooling A10.5 14.0
Heating 10.5 14.0
Fan
Airflow rate
Cooling
HIGH
m3/h
2,050 2,550
MED 1,640 2,040
LOW 1,330 1,650
QUIET 1,070 1,430
Heating
HIGH 1,850 2,550
MED 1,640 2,040
LOW 1,330 1,650
QUIET 1,070 1,430
Type × Q'ty Sirocco fan × 3
Motor output W 375
Static pressure range Pa 30 to 200
Sound pressure level *2
Cooling
HIGH
dB (A)
36 39
MED 31 35
LOW 28 31
QUIET 26 29
Heating
HIGH 33 39
MED 31 35
LOW 28 31
QUIET 26 29
Sound power level Cooling dB (A) 64 67
Heating 63 69
Heat exchanger type
Dimensions (H × W × D) mm 420 × 1,158 × 39.9
Fin pitch 1.4
Rows × Stages 3 × 20
Pipe type Copper
Fin type Aluminum
Enclosure Material Steel sheet
Color ―
Dimensions
(H × W × D)
Net mm 300 × 1,400 × 700
Gross 400 × 1,638 × 875
Weight Net kg 46
Gross 56
Connection pipe Size Liquid mm (in) Ø 9.52 (3/8)
Gas Ø 15.88 (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
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.)
– Standard static pressure; 36 type: 47 Pa, 45 and 54 types: 60 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.
• This data is based on EN 14511 standard.
- 2 - 1. Specifications
DUCT TYPE ARXG36-54KHTAP DUCT TYPE ARXG36-54KHTAP

Specifications for Erp Lot10
Model name ARXG36KHTAP
Energy efficiency class Cooling A++
Heating (Average) A+
Pdesign Cooling kW 9.5 (35°C)
Heating (Average) 8.7 (-10°C)
SEER Cooling kWh/kWh 6.10
SCOP Heating (Average) 4.20
Annual energy consumption QCE kWh/a 544
QHE (Average) 2,898
- 3 - 1. Specifications
DUCT TYPE ARXG36-54KHTAP DUCT TYPE ARXG36-54KHTAP

2. Dimensions
2-1. Models: ARXG36KHTAP, ARXG45KHTAP, and
ARXG54KHTAP
Unit: mm
Gas pipe
Drain port
Control box
Liquid pipe
Air
P100 ×12 = 1,200
P100 ×11 = 1,100
Φ4.5
190
80
Rear view
Front view
Top viewSide view (L) Side view (R)
59
100 Φ4
Φ125
140
160
139
1,440
184
31
1,400
1,162
47
53
1,295
60 631
25 700 25
210
145
29
150
75
300
300
280
320
Φ4.5
278 255 150
10 22 75
220
91 57 43
150 217 246
41
66
98
- 4 -
2-1. Models: ARXG36KHTAP, ARXG45KHTAP, and ARXG54KHTAP 2. Dimensions
DUCT TYPE ARXG36-54KHTAP DUCT TYPE ARXG36-54KHTAP

2-2. Installation space requirement
Provide sufficient installation space for product safety.
¢Models: ARXG36KHTAP, ARXG45KHTAP, and ARXG54KHTAP
Floor
300 or more
150 or
more
20 or more
2,500 or more
(When no ceiling)
20 or more
Unit: mm
- 5 -
2-2. Installation space requirement 2. Dimensions
DUCT TYPE ARXG36-54KHTAP DUCT TYPE ARXG36-54KHTAP

2-3. Maintenance space requirement
For future maintenance and service access, provide sufficient maintenance space.
NOTE: Do not place any wiring or illumination in the maintenance space, as they will impede ser-
vice.
¢Models: ARXG36KHTAP, ARXG45KHTAP, and ARXG54KHTAP
• Provide a service access for maintenance purposes.
Bottom view
Unit: mm
AIR
Control box
300 or more
500 or more
500 or more
Service access
• The service access necessary for fan units and filter maintenance.
Unit: mm
AIR
Service access
Fan unit side
300 or more
500 or more
100 or more
100
Bottom view
- 6 -
2-3. Maintenance space requirement 2. Dimensions
DUCT TYPE ARXG36-54KHTAP DUCT TYPE ARXG36-54KHTAP