Fuji Electric RCG18KRLB User manual

AIR CONDITIONER
Cassette type
SERVICE MANUAL
INDOOR
RCG18KRLB
RCG22KRLB
OUTDOOR
ROG18KATA ROG22KATA
SR_AU012EJ_02
2019.10.01

Notices:
• Product specifications and design are subject to change without notice for future improvement.
• For further details, please check with our authorized dealer.
Trademarks
The following term and logo are trademarks of Fujitsu General Limited in the United States, other countries
or both:
FGLair™
Android and Google Play are trademarks of Google Inc.
App Store is a service mark of Apple Inc., registered in the U.S. and other countries.
IOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under
license.

CONTENTS
1. GENERAL INFORMATION
2. TECHNICAL DATA AND PARTS LIST

1. GENERAL INFORMATION
2019.10.01
SR_CH01_AU012EJ_02

CONTENTS
1. GENERAL INFORMATION
1. Specifications..............................................................................................01-1
1-1. Indoor unit ......................................................................................................................01-1
1-2. Outdoor unit....................................................................................................................01-3
2. Dimensions..................................................................................................01-4
2-1. Indoor unit ......................................................................................................................01-4
2-2. Outdoor unit....................................................................................................................01-7

1. Specifications
1-1. Indoor unit
Type
Cassette
Inverter heat pump
Model name RCG18KRLB RCG22KRLB
Power supply 230 V ~ 50 Hz
Power supply intake Outdoor unit
Available voltage range 198—264 V
Capacity
Cooling
Rated kW 5.2 6.0
Btu/h 17,700 20,500
Min.—Max. kW 0.90—5.40 0.90—6.30
Btu/h 3,100—18,400 3,100—21,400
Heating
Rated kW 6.0 7.0
Btu/h 20,500 23,900
Min.—Max. kW 0.90—6.30 0.90—7.40
Btu/h 3,100—21,400 3,100—25,200
Input power
Cooling Rated
kW
1.60 1.85
Max. 2.33 2.67
Heating Rated 1.66 1.93
Max. 2.33 2.67
Current Cooling Rated A 7.4 8.2
Heating 7.7 8.5
Power factor Cooling %94.0 98.1
Heating 93.7 98.7
EER Cooling kW/kW 3.25 3.24
COP Heating 3.61 3.63
Moisture removal L/h (pints/h) 1.5 (2.6) 2.2 (3.9)
Maximum operating current *1 Cooling A10.1 11.6
Heating 10.1 11.6
Fan
Airflow rate
Cooling
HIGH
m3/h
1,050
MED 960
LOW 900
QUIET 780
Heating
HIGH 1,050
MED 960
LOW 900
QUIET 780
Type × Q'ty Turbo fan × 1
Motor output W 81
Sound pressure level *2
Cooling
HIGH
dB (A)
33
MED 32
LOW 31
QUIET 28
Heating
HIGH 33
MED 32
LOW 31
QUIET 28
Heat exchanger type
Dimensions (H × W × D)
mm
Main 1: 210 × 2,127 × 13.3
Main 2: 210 × 2,061 × 13.3
Fin pitch Main 1: 1.2
Main 2: 1.2
Rows × Stages Main 1: 1 × 10
Main 2: 1 × 10
Pipe type Copper tube
Fin type Aluminum
Dimensions
(H × W × D)
Net mm 246 × 840 × 840
Gross 298 × 960 × 950
Weight Net kg 23
Gross 28
Connection pipe Size Liquid mm (in) Ø 6.35 (Ø 1/4)
Gas Ø 12.70 (Ø 1/2)
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: 5.0 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.
1-1. Indoor unit - (01-1) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

Specifications for ErP Lot10
Model name RCG18KRLB RCG22KRLB
Energy efficiency class Cooling A++
Heating (Average) A+
Pdesign Cooling kW 5.2 (35°C) 6.0 (35°C)
Heating (Average) 3.8 (-10°C) 4.4 (-10°C)
SEER Cooling kWh/kWh 6.20 6.20
SCOP Heating (Average) 4.10 4.10
Annual energy consumption QCE kWh/a 293 338
QHE (Average) 1,297 1,502
Sound power level Cooling HIGH dB (A) 47 49
Heating 47 49
1-1. Indoor unit - (01-2) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

1-2. Outdoor unit
Type Inverter heat pump
Model name ROG18KATA ROG22KATA
Power supply 230 V ~ 50 Hz
Available voltage range 198—264 V
Starting current A 7.7 8.5
Fan
Airflow rate Cooling m3/h 1,710 2,240
Heating 1,840 2,240
Type × Q'ty Propeller fan × 1
Motor output W 23 49
Sound pressure level *1 Cooling dB (A) 51 52
Heating 52 53
Sound power level Cooling dB (A) 63 64
Heating 64 65
Heat exchanger type
Dimensions
(H × W × D) mm
Main 1: 504 × 881 × 18.19
Main 2: 504 × 851 × 18.19
Main 1: 588 × 881 × 18.19
Main 2: 588 × 851 × 18.19
Fin pitch Main 1: 1.3
Main 1: 1.3
Rows × Stages Main 1: 1 × 24
Main 2: 1 × 24
Main 1: 1 × 28
Main 2: 1 × 28
Pipe type Copper tube
Fin type Type (Material) Aluminum
Surface treatment PC fin
Compressor Type × Q'ty DC rotary × 1 DC twin rotary × 1
Motor output W 900
Refrigerant Type (Global warming potential) R32 (675)
Charge g 900 1,100
Refrigerant oil Type RB68A FW68S
Amount cm3340 350
Enclosure
Material Steel sheet
Color Beige
Approximate color of Munsell 10YR 7.5/1.0
Dimensions
(H × W × D)
Net mm 542 × 799 × 290 632 × 799 × 290
Gross 602 × 940 × 375 692 × 940 × 375
Weight Net kg 33 36
Gross 36 40
Connection pipe
Size Liquid mm (in) Ø 6.35 (Ø 1/4)
Gas Ø 12.70 (Ø 1/2)
Method Flare
Pre-charge length
m
15
Max. length 20 25
Max. height difference 15 20
Operation range Cooling °C -10 to 46
Heating -15 to 24
Drain hose Material PP
Size mm Ø 13.0 (I. D.), Ø 16.0 to Ø 16.8 (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.
1-2. Outdoor unit - (01-3) - 1. Specifications
GENERAL INFORMATION GENERAL INFORMATION

2. Dimensions
2-1. Indoor unit
¢Models: RCG18KRLB and RCG22KRLB
950
View A 342
796
293
200 to 205
10
39
950
950
620
768
420
Hanging bolt position
Hanging bolt position
Indoor unit
Drain hose
View B View C
A
BC
Ceiling
200 to 205
200
342 45
40
140
256
Wire hole
237
40 40
163
Fresh air inlet (cut out)
100
83
100
83
352
109
163
90
4 × Ø3.2
hole
Ø95
80
80
Unit: mm
2-1. Indoor unit - (01-4) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

¢Installation space requirement
Provide sufficient installation space for product safety.
For 4-direction setting:
1,500
or more
1,000 or more
1,800 or more
Obstruction
3,000 or more
Strong and durable ceiling
Floor
Ceiling height
Ceiling mode* “Low” : 2.7 m or less
Ceiling mode “Standard” : up to 3.0 m
Ceiling mode “High” : up to 3.5 m
256 or more
Unit: mm
*: For switching the ceiling mode, refer to “Contents of function setting” on page 1.
For 3-direction setting:
100 or more*
Unit: mm
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.
• The ceiling height cannot be set in the 3-way outlet mode. Therefore, ceiling height setting
change by function setting 20 is prohibited. For details, refer to “Contents of function setting” on
page 1.
2-1. Indoor unit - (01-5) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

Human sensor (Option)
Drain
pipe
Refrigerant
pipe
Human
sensor
Top view
Example of sensitivity range:
When the installation height gets higher, the temperature sensitivity decreases.
3,200
800
8,800
Unit: mm
Equal sensitivity range of temperature Ceiling height 3,200 mm
Detecting position 800 mm from floor surface
CAUTION
Do not place large objects near the human sensor. Also keep heating units outside the sensor’s
detection area.
2-1. Indoor unit - (01-6) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2-2. Outdoor unit
¢ROG18KATA
Unit: mm
580 109
330 353
Pitch of bolts for installation
Pitch of bolts for installation
Top view
4- M1 0 hole
Side viewSide view Front view
799 68 29016
33 30
19
542
20
Airflow
Bottom view Side view (Valve part)
37
399
Drain port Ø42
184
120
180
2-2. Outdoor unit - (01-7) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

¢Model: ROG22KATA
Unit: mm
Side view
Side view Front view
Bottom view Side view (Valve part)
Top view
580
79919 68 16 290
33 30
109
353
632
20
330
Pitch of bolts for installation
Pitch of bolts for installation
4-
M1 0 hole
Airflow
Drain port Ø42
37
120
184
399 180
2-2. Outdoor unit - (01-8) - 2. Dimensions
GENERAL INFORMATION GENERAL INFORMATION

2. TECHNICAL DATA AND PARTS LIST
2019.10.01
SR_CH02_AU012EJ_02

CONTENTS
2. TECHNICAL DATA AND PARTS LIST
1. Precautions..................................................................................................02-1
2. Indoor unit parts list....................................................................................02-2
2-1. Models: RCG18KRLB and RCG22KRLB .......................................................................02-2
3. Outdoor unit parts list.................................................................................02-6
3-1. Model: ROG18KATA ......................................................................................................02-6
3-2. Model: ROG22KATA ....................................................................................................02-10
4. Accessories ...............................................................................................02-14
4-1. Indoor unit ....................................................................................................................02-14
4-2. Outdoor unit..................................................................................................................02-14
5. Optional parts ...........................................................................................02-15
5-1. Indoor unit ....................................................................................................................02-15
6. Refrigerant system diagrams...................................................................02-19
6-1. Model: ROG18KATA ....................................................................................................02-19
6-2. Model: ROG22KATA ....................................................................................................02-20
7. Wiring diagrams ........................................................................................02-21
7-1. Indoor unit ....................................................................................................................02-21
7-2. Outdoor unit..................................................................................................................02-22
8. PC board diagrams ...................................................................................02-24
8-1. Models: RCG18KRLB and RCG22KRLB .....................................................................02-24
8-2. Model: ROG18KATA ....................................................................................................02-25
8-3. Model: ROG22KATA ....................................................................................................02-26

1. Precautions
When you start servicing, pay attention to the following points. For detailed precautions, refer to the
installation manual of the products.
CAUTION
• Service personnel
– Any person who is involved with working on or breaking into a refrigerant circuit should hold a
current valid certificate from an industry-accredited assessment authority, which authorizes
their competence to handle refrigerants safely in accordance with an industry recognized as-
sessment specification.
– Servicing shall only be performed as recommended by the equipment manufacturer. Mainte-
nance and repair requiring the assistance of other skilled personnel shall be carried out under
the supervision of the person competent in the use of flammable refrigerants.
– Servicing shall be performed only as recommended by the manufacturer.
• Work
– Prior to beginning work on systems containing flammable refrigerants, safety checks are nec-
essary to ensure that the risk of ignition is minimized. When repairing the refrigerant system,
refer to the precautions written in the installation manual of the products before you start ser-
vicing.
– Work shall be undertaken under a controlled procedure so as to minimize the risk of a
flammable gas or vapor being present while the work is being performed.
– All maintenance staff and others working in the local area shall be instructed on the nature of
work being carried out.
– Work in confined spaces shall be avoided.
– The area around the workspace shall be sectioned off.
– Ensure that the conditions within the area have been made safe by control of flammable ma-
terial.
• Checking for presence of refrigerant
– The area shall be checked with an appropriate refrigerant detector prior to and during work, to
ensure the technician is aware of potentially flammable atmospheres.
– Ensure that the leak detection equipment being used is suitable for use with flammable refrig-
erants, i.e. non-sparking, adequately sealed or intrinsically safe.
• Service parts information and design are subject to change without notice for product improve-
ment.
• For the latest information of the service parts, refer to our Service Portal.
https://fujitsu-general.force.com/portal/
• Precise figure of the service parts listed in this manual may differ from the actual service parts.
- (02-1) - 1. Precautions
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

2. Indoor unit parts list
2-1. Models: RCG18KRLB and RCG22KRLB
Hook A
Hook B
Wire cover
Hook A
Box shield
5 Main PCB (AUXG18KRLB) 9710995835
5 Main PCB (AUXG22KRLB) 9710995712
1 Cable guide
2 Room thermistor Holder
9381376001
9381348008
Ref. Description Part number
3 Room thermistor
4 Pipe Thermistor
9900822002
9900942014
6 Power PCB
7 PCB (Non-polar 2-wire)
9710022005
10 Main PCB holder 9381350001
11 Power PCB Holder 9381349005
9710019005
8 Remote terminal 5P
9 Power Terminal 3P
9900896003
9900720032
2
6
7
5
11
10
1
8
9
3
4
2-1. Models: RCG18KRLB and RCG22KRLB - (02-2) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

21 Bellmouth
22 Turbo fan assy
24 Nut
25 Brushless motor
9381484003
9381303007
9356998009
23 Turbo Fan Washer 9378394018
28 Drain pan sub assy 9381789009
9603443009
27 Motor Wire Holder
26 Special Nut
9381351008
9378388017
Ref. Description Part number
24
23
21
25
22
26 27
28
2-1. Models: RCG18KRLB and RCG22KRLB - (02-3) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST

31 Drain Cap 9375502010
33 Vane L
34 Vane R
39 Float Switch Sub Assy
38 Hose Band
36 Drain Port Sub Assy
9381745012
9381744008
32 Panel Hook 9375671013
37 Drain Hose 9379665001
35 Drain Pump Sub Assy 9381793006
9381794003
9379757010
9381788002
Ref. Description Part number
35
36 31
39
34
32
33
37
38
2-1. Models: RCG18KRLB and RCG22KRLB - (02-4) - 2. Indoor unit parts list
TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST