Airwell AW-FWDB018-N91 User manual

Service Manual
FWDB Low temperature floor ceiling
R32
English
IMPORTANT NOTE:
Read this manual carefully before installing or operating your new air conditioning unit. Make sure to
save this manual for future reference.
20.AW.FWDB.18-24.SM.EN.10.05

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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Part1. General Information................................................................................................... 1
1Model Names of Indoor/Outdoor Units......................................................................... 2
2External Appearance........................................................................................................3
2Features..............................................................................................................................5
Part2. Indoor Unit................................................................................................................... 6
Floor & Ceiling........................................................................................................................ 6
1 Features............................................................................................................................. 7
2 Specifications.................................................................................................................. 10
3 Dimensions......................................................................................................................12
4 Service Space.................................................................................................................13
5 Wiring Diagrams............................................................................................................. 14
6 Capacity Table.................................................................................................................15
7 Electric Characteristics..................................................................................................18
8 Exploded View................................................................................................................ 19
9 Accessories..................................................................................................................... 21
10 The Specification of Power.........................................................................................22
11 Field Wiring....................................................................................................................23
12 Troubleshooting............................................................................................................ 24
Part 3 Outdoor Units............................................................................................................26
1 Specification.................................................................................................................... 27
2 Dimensions...................................................................................................................... 29
3 Service Space.................................................................................................................29
4 Wiring Diagrams............................................................................................................. 30
5 Electric Characteristics..................................................................................................32
6 Operation Limits..............................................................................................................33
7 Sound Levels...................................................................................................................34
8 Exploded View................................................................................................................ 35
9 Troubleshooting.............................................................................................................. 39
Part 4 Installation..................................................................................................................42
1Precaution on Installation..............................................................................................43
2Vacuum Dry and Leakage Checking...........................................................................44
3 Additional Refrigerant Charge...................................................................................... 46
4 Water Drainage...............................................................................................................47
5Insulation Work............................................................................................................... 50
6Test Operation.................................................................................................................52
Part 5 Controller....................................................................................................................53
1 Wired Controller..............................................................................................................54
CONTENT

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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Part1. General Information
1.Model Names of Indoor/Outdoor Units...................................................... 2
2.External Appearance.................................................................................... 3
3.Features..........................................................................................................5
R32 50Hz Floor ceiling series

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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1. Model Names of Indoor/Outdoor Units
1.1 Indoor Units
Model name Dimension
(W×H×D) (mm)
Net/Gross
weight(kg) Power supply
AW-FWDB018-N91 1050×675×235 26.5/31 220~240V-1Ph-50Hz
AW-FWDB024-N91 1050×675×235 26.5/31 220~240V-1Ph-50Hz
1.2 Outdoor Units
Model name Net/Gross
weight(kg) Power supply
AW-YMDB018-H91 32.5/35 220~240V-1Ph-50Hz
AW-YMDB024-H91 48.7/52.6 220~240V-1Ph-50Hz
Dimension
(W×H×D) (mm)
880×555x345
935×702x382

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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2. External Appearance
2.1 Indoor unit
Floor & Ceiling

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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AW-YMDB018-H91
AW-YMDB024-H91
2.2 Outdoor unit

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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3. Features
4.1 Wide operation range, -15 for cooling and -15 for heating.
4.2Excellent in efficiency, SCOP higher than 4.0, meet the EU’s new energy efficiency
standards.
4.3 High quality coils
The coil is constructed of advanced inner grooved copper tube and aluminum fins.
4.4 Low operation sound level: Well-known stable and quiet running DC fan motor.
4.5 Well-known compressor, GMCC and Mitsubishi.
4.6 Universal design: convenient for market stock and spare parts stock.
4.8 R32 is environment friendly refrigerant.
4.9 CE certification, ROHS certification.

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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Part2. Indoor Unit
Floor & Ceiling
1.Features..........................................................................................................7
2.Specifications.............................................................................................. 10
3.Dimensions.................................................................................................. 12
4.Service Space............................................................................................. 13
5.Wiring Diagrams..........................................................................................14
6.Capacity Table.............................................................................................15
7.Electric Characteristics.............................................................................. 18
8. Exploded View............................................................................................19
9.Accessories..................................................................................................21
10.The Specification of Power..................................................................... 22
11.Field Wiring................................................................................................ 23
12.Troubleshooting........................................................................................ 24

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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1 Features
1. Flexible installation, ceiling suspended and floor standing.
2. Adopting centrifugal fans, higher ESP and longer air flow distance.
3. Two way auto-swing function, built-in two louver step motors, vertical and horizontal air-flow
adjustment.
4. Washable air filter, vertical and horizontal grille for option.

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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5. Digital tube display standard.
6. High efficiency DC fan motor, low noise and more comfortable.
7. New upper and lower buckle type wheel case, the upper plastic wheel case can be
removed alone, which is convenient adjust the wheel motor.
8. Water pump optional, pumping head is up to 700mm.
9. Adopting waterproof plastic film on water collector, avoiding water leakage.

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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10.Self-diagnostic function and multi protection; Auto-restart function.
11. Standard for wireless controller.

FFWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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2 Specifications
Cooling
Heating
Indoor coil
Tube outside dia. and type
Coil length x height x width
Number of circuits
Indoor air flow(High speed) m3/h
dB(A) 36/42/47 36/42/47
Indoor unit
1050×675×235 1050×675×235
1130×765×330 1130×765×330
26.5/31 26.5/31
AW-FWDB024-N91
220~240/1/50
2.9-7.0-8.0
6.1
A++
433
3.3-7.7-8.5
4.0
A+
2536
75
0.3
7000
6000
75
-
1225/1080/930
E
3
21×13.37
1.4
Hydrophilic
Ф7
inner grooved
680x252x40.11
4
1200
48~52
AW-FWDB018-N91
220~240/1/50
2.0-5.3-5.6
6.1
A++
325
2.2-5.3-5.8
4.0
A+
1800
75
0.3
5300
4000
75
-
1225/1080/930
E
2
21×13.37
1.4
Hydrophilic
Ф7
inner grooved
680x252x26.7
2
1200
48~52
V/Ph/Hz
KW
Model
Indoor power supply
kWh/annum
KW
kWh/annum
W
A
W
W
W
μF
r/min
mm
mm
mm
mm
Body(mm)
Body(mm)
Body(Kg)
Capacity
SEER
Energy efficiency class
Year Consumption
Capacity
SCOP
Energy efficiency class
Year Consumption
Indoor unit power input
Indoor unit current input
Pdesignc
pdesignh(A)
Power output
Capacitor
Speed
Insulation class
Number of rows
Tube pitch(a)x row pitch(b)
Fin spacing
Fin type
Indoor fan motor
power level
pressure level
Dimension(W*H*D)
Packing(W*H*D)
Net/Gross weight
Indoor noise
level

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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Operation temp
°C
16～32
16～32
Ambient temp
cooling
°C
-15～50
-15～50
heating
°C
-15～30
-15～30
Application area
m2
20-35
28-50
Notes:
1. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB; Equivalent ref. Piping: 5m (horizontal)
2. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB; Equivalent ref. Piping: 5m (horizontal)
3. Actual noise level may differ, depending on the room structure, etc, since these noise values are from an
anechoic room.

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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3 Dimensions
AW-FWDB018-N91, AW-FWDB024-N91
AC
B
D
E
F
Model(kBtu/h)A(mm) B(mm) C(mm) D(mm) E(mm) F(mm)
18～24 1050 675 235 933 440 188

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
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4 Service Space

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5 Wiring Diagrams
5.1 AW-FWDB018-N91, AW-FWDB024-N91
N1L1 S
Connect to
YE/GN
CN26
REMO_CTRL
0
F
1
SW1
CN10
CN3
L
N
SW2
BR
BL
1 2 3 4 5 6 7 8
OFF
ON
PUMP
CN2
PUMP
LEFT FAN CN7
RIGHT FAN CN8
S
CN37
CN4
HEATER
OUT POWER
CN11
CN27
CN23
Wire control
Duct display
Controller
Receive and display light board
WATER
SWITCH
CN18
Water-SW
510
5
DC
FAN1
CN19
CN20 SWING2
SWING1
NOTE:Around the ring 5 ring
NOTE:Around the ring 5 ring
the outdoor
Ring user selection
BL
BR
BK
T1T2
T2B
CN17
PT1
PT2
PT3
MODEL
POWER SW1
Reserved
Reserved
0
21
7K
1
26
9K
2
35
12K
3
53
18K
80
27K
6
90 105
36K
4
70
24K
5
30K
78
125 42K
9
140
48K
160
55K
C
180
A
150
52K
B
60K
D E F
Reserved Reserved
HP Reserved 0.8 1.0 1.5 2.0 3.0 3.5 4.0
2.5 4.5 5.0 6.0 6.55.5 Reserved
1.7
47
16K
1
OFF ON
1
OFF ON That DIP to OFF
That DIP to ON
NOTE:
SW2
1 2 3 4 5 6 7 8
OFF ON
FACTORY DEFAULT
Indoor models
Low static pressure duct unit
Indoor models Select bits
12
OFF
ON
OFF
ON
OFF
ON
OFF
ON
1 2 1 2 1 2 Floor&Ceiling Unit
Standard static pressure duct unit
High static pressure duct unit
OFF ON
OFF ON
SW2 NO.4
4
4
Display light board
LED
Digital tube
OFF ON OFF ON
SW2 NO.3
4
4
FAN SPEED CHOICE
High speed
Super High speed
OFF ON OFF
ON
SW2 NO.5
5
5
power-down memory
No power-down memory
power-down memory
Room temp. sensor T1 for
Electric control panel
Wire controller
OFF ON OFF ON
SW2 NO.8
8
8
Reserved
SW2 NO.6
ReservedSW2 NO.7

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6. Capacity Table
Cooling
6.1 AW-FWDB018-N91
MODEL AW-FWDB018-N91
COOLING OUTDOOR TEMPERATURE DRY
Indoor Conditions 21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 49ºC
21ºC D
15ºC W
Total capacity kW 5.09 5.06 5.03 4.99 4.95 4.91 4.88
Input kW. 1.42 1.43 1.45 1.46 1.51 1.56 1.61
24ºC D
17ºC W
Total capacity kW 5.25 5.22 5.18 5.15 5.10 5.06 5.03
Input kW. 1.44 1.45 1.46 1.48 1.54 1.58 1.63
27ºC D
19ºC W
Total capacity kW 5.41 5.38 5.34 5.30 5.26 5.22 5.18
Input kW. 1.45 1.46 1.48 1.50 1.55 1.61 1.65
29ºC D
21ºC W
Total capacity kW 5.48 5.44 5.40 5.36 5.32 5.28 5.24
Input kW. 1.47 1.49 1.51 1.53 1.57 1.63 1.67
32ºC D
23ºC W
Total capacity kW 5.58 5.55 5.51 5.47 5.42 5.38 5.34
Input kW. 1.48 1.49 1.51 1.53 1.58 1.64 1.69

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6.2 AW-FWDB024-N91

FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
MODEL AW-FWDB018-N91
HEATING OUTDOOR CONDITIONS
Indoor Conditions 24ºC D
18ºC W
15ºC D
14ºC W
7ºC D
6ºC W
3ºC D
2ºC W
-5ºC D
-6ºC W
-7ºC D
-8ºC W
-14ºC D
-15ºC W
15ºC
Capacity kW 6.05 6 5.98 5.81 5.55 5.47 4.86
Input kW. 1.50 1.36 1.33 1.31 1.28 1.27 1.21
18ºC
Capacity kW 5.99 5.96 5.94 5.77 5.52 5.43 4.9
Input kW. 1.53 1.39 1.35 1.33 1.30 1.29 1.23
20ºC
Capacity kW 5.96 5.92 5.9 5.73 5.48 5.4 4.86
Input kW. 1.55 1.41 1.38 1.36 1.33 1.32 1.26
22ºC
Capacity kW 5.93 5.88 5.86 5.69 5.44 5.36 4.83
Input kW. 1.58 1.44 1.40 1.38 1.35 1.34 1.28
27ºC
Capacity kW 5.8 5.84 5.82 5.65 5.4 5.32 4.79
Input kW. 1.61 1.46 1.42 1.40 1.38 1.37 1.30
MODEL AW-FWDB024-N91
HEATING OUTDOOR CONDITIONS
Indoor Conditions 24ºC D
18ºC W
15ºC D
14ºC W
7ºC D
6ºC W
3ºC D
2ºC W
-5ºC D
-6ºC W
-7ºC D
-8ºC W
-14ºC D
-15ºC W
15ºC
Capacity kW 7.95 7.83 7.81 7.58 7.25 7.14 6.43
Input kW. 1.95 1.85 1.80 1.78 1.74 1.73 1.64
18ºC
Capacity kW 7.9 7.78 7.75 7.53 7.2 7.09 6.39
Input kW. 1.98 1.89 1.83 1.80 1.77 1.76 1.67
20ºC
Capacity kW 7.86 7.73 7.7 7.47 7.15 7.04 6.35
Input kW. 2.04 1.92 1.86 1.84 1.80 1.78 1.70
22ºC
Capacity kW 7.82 7.67 7.65 7.42 7.1 6.99 6.3
Input kW. 2.08 1.95 1.90 1.87 1.83 1.82 1.73
27ºC
Capacity kW 7.73 7.62 7.59 7.37 7.05 6.94 6.26
Input kW. 2.12 1.99 1.94 1.91 1.87 1.85 1.77
Heating
6.3 AW-FWDB018-N91
6.4 AW-FWDB024-N91
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FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
7 Electric Characteristics
Model Indoor Units Indoor Fan Motor
Hz Voltage Min. Max. kW
AW-FWDB018-N91 50 220-240V 198 254 0.075
AW-FWDB024-N91 50 220-240V 198 254 0.075
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