Daikin FWW Series User manual

TECHNICAL MANUAL
Chilled Water Fan Coil Units
FWW, FWKE, FWC, FUD Series
FWW-L FWKE-E
FWC-C FUD-B
TM-FCUW-PHB2
FWC-GFWC-G EC

Table of Contents
Table of Contents
Nomenclature......................................................................................................................1
Product Line-Up.............................................................................................................1
Application Information .....................................................................................................6
Operating Limits ............................................................................................................6
Installation Guide...........................................................................................................8
Sound Data........................................................................................................................21
Sound Pressure Level .................................................................................................21
Sound Power Level .....................................................................................................26
NC Curve.....................................................................................................................31
Selection Process.............................................................................................................52
Fan Performance Curve ..............................................................................................54
Engineering & Physical Data...........................................................................................88
Outlines & Dimensions ..................................................................................................102
Wiring Diagrams .............................................................................................................116
Service & Maintenance ..................................................................................................124
Troubleshooting .............................................................................................................125

Table of Contents
ii

Nomenclature
1
Nomenclature
FWW 02 ABL - K C E
Specication
E: Cooling Only
H: Cooling and Heating
Revision
AA: Revision 1
AB: Revision 2
Market
C: Export with CE Mark
E: Export without CE Mark
Power Supply
A: 220-240V/1Ph/50Hz
F: 380-415V/3Ph/50Hz
K: 208-230V/1Ph/60Hz
Product Series
L: L series (for FWW)
D: D series (for FWE)
E: E series (for FWE)
Size
02: 2 kW*
03: 3 kW*
Fan Coil Unit Type
FWW: Wall Mounted
FWE: Ceiling Convertible / Ceiling Exposed
FWK 06 AAE - K C C
Specication
C: AC Motor Cooling and Heating
D: DC Motor Cooling and Heating
Revision
AA: Revision 1
AB: Revision 2
Market
C: Export with CE Mark
E: Export without CE Mark
Power Supply
A: 220-240V/1Ph/50Hz
F: 380-415V/3Ph/50Hz
K: 208-230V/1Ph/60Hz
Product Series
C: C series (for FWF)
E: E series (for FWK/FWKE)
EH: EH series (for 4 Pipes FWK/FWKE)
Size
06: 6 kW*
08: 8 kW*
Fan Coil Unit Type
FWF: Ceiling Cassette (600x600)
FWK: Ceiling Cassette (900x900)
FWKE: Ceiling Cassette (900x900) DC Motor
Remark:
* : Capacity value under Nomenclature is an indication.
Please refer to Engineering and Physical Data for exact capacity value

Nomenclature
2
FWC 03 C - K C A A A
Water Pipe Connection
A: Right Piping
B: Left Piping
Revision
A: Revision 1
B: Revision 2
Controller
A: With Controller
N: Without Controller
Power Supply
A: 220-240V/1Ph/50Hz
F: 380-415V/3Ph/50Hz
K: 208-230V/1Ph/60Hz
Product Series
C: C series
Size
03: 3 kW*
04: 4 kW*
Fan Coil Unit Type
FWC: Ceiling Concealed
MArket
C: Export with CE Mark
E: Export without CE Mark
FUD 20 B - K C N P A
Water Pipe Connection
P: Right Piping
Q: Left Piping
Air Discharge Direction
A: Horizontal
B: Vertical
Controller
N: Without Controller
Power Supply
A: 220-240V/1Ph/50Hz
F: 380-415V/3Ph/50Hz
K: 208-230V/1Ph/60Hz
Product Series
B: B series
Size
20: 20 kW*
25: 25 kW*
Fan Coil Unit Type
FUD: Ducted Blower
Market
C: Export with CE Mark
E: Export without CE Mark
Remark:
* : Capacity value under Nomenclature is an indication.
Please refer to Engineering and Physical Data for exact capacity value

Nomenclature
3
Remark:
* : Air Flow Rate value under Nomenclature is an indication.
Please refer to Engineering and Physical Data for exact capacity value
Note:
Please consult factory for customised enquiry.
FWC 10 G - K E 5 C X X A X D A
Fan Coil Unit Type
FWC: Ceiling Concealed
Size
10: 1000CFM*
Product Series
G: G series
Power Supply
K: 208-230V/1Ph/60Hz
W: 208-230V/1Ph/50Hz
208-230V/1Ph/60Hz
Market
E: Export w/o Marking
External Static Pressure
3: 30Pa
5: 50Pa
8: 75-80Pa
Coil & Water Pipe Connection
C: Right Piping
D: Left Piping
Return Air Plenum & Filter
Removal
X: Without Return Plenum &
Without Filter Removal
S: Rear Return & Side Filter
Removal
Filter
X: No Filter
H: 1’’ Aluminium Filter
F: 8mm Saranet Filter
A: 8mm Aluminium Filter
Drain Pan Material & Length
A: Galvanised Steel & Standard
Length
B: Galvanised Steel & Extended
100mm
E: Stainless Steel & Standard
Length
F: Stainless Steel & Extended
100mm
Motor/Control Module/Wired
Controller
X: AC/Without Control Module/
Without Wired Controller
Revision
A: Revision 1
B: Revision 2
Insulation Material/Thickness
D: PE (10mm)
G: PE (20mm)
K: NBR (10mm)
R: NBR (20mm)

Nomenclature
4
Product Line-Up
Chilled Water Fan Coil Units
Model
Classication
PCB Handset Control Connection Air Discharge Filter
50WJWXX* UCW_W2.0* W3* W3DC* Without Controller BRC52A BRC51A Auto Air Swing Turbo Quiet 1/2” BSP Female Thread Adaptor 3/4” BSP Female Thread Adaptor 1 1/4” BSP Female Thread Adaptor Horizontal Flow Vertical Flow Convertible Saranet Filter Viledon R29
FWW03L X X X X X X X
FWW04L X X X X X X X
FWW05L X X X X X X X
FWW06L X X X X X X X
FWKE05E(H) X X X X X XX
FWKE08E(H) X X X X X XX
FWKE11E(H) X X X X X XX

Nomenclature
5
Model
Classication
PCB Handset Control Connection Air Return Air Discharge Filter
50WJWXX* UCW_W2.0* W3* W3DC* Without Controller BRC52A BRC51A Auto Air Swing Turbo Quiet 3/4” BSPT Female Thread Adaptor 3/4” BSP Female Thread Adaptor 1” BSPT Female Thread Adaptor 1 1/4” BSP Female Thread Adaptor Horizontal Flow Vertical Flow Convertible Rear Return Bottom Return Convertible Saranet Filter Viledon R29
FWC03C X X X X X X
FWC04C X X X X X X
FWC06C X X X X X X
FWC07C X X X X X X
FWC09C X X X X X X
FWC12C XXX X X X
FWC14C XXX X X X
FWC16C X X X X X X
FWC03G X X X X
FWC04G X X X X
FWC06G X X X X
FWC08G X X X X
FWC10G X X X X
FWC12G X X X X
FWC14G X X X X
FWC16G X X X X
FWC18G X X X X
FWC20G X X X X
FUD20B X X X X X
FUD25B X X X X X
FUD30B X X X X X
* PCB naming
** Standard Model, optional items please refer to Nomenclature.

6
Application Information
Application Information
Model: FWW
Operating Limits:
Thermal carrier : Water
Water temperature : 4°C ~ 10°C (Cooling), 35°C ~ 50°C (Heating)
Maximum water pressure : 16 bar
Air temperature : (as below)
Cooling Mode
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature 19.0 / 66.2 14.0 / 57.2
Maximum indoor
temperature 32.0 / 89.6 23.0 / 73.4
Heating Mode
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature 15.0 / 59.0 -
Maximum indoor
temperature 27.0 / 80.6 -
Ts: Dry bulb temperature. Th: Wet bulb temperature.
Model: FWKE
Operating Limits:
Thermal carrier : Water
Water temperature : 4°C ~ 10°C (Cooling), 35°C ~ 50°C (2 Pipes) (Heating), 35°C ~ 70°C (4 Pipes) (Heating)
Maximum water pressure : 16 bar
Air temperature : (as below)
Cooling Mode
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature 16.0 / 60.8 11.0 / 51.8
Maximum indoor
temperature 32.0 / 89.6 23.0 / 73.4
Heating Mode
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature 16.0 / 60.8 -
Maximum indoor
temperature 30.0 / 86.0 -
Ts: Dry bulb temperature. Th: Wet bulb temperature.
Model: FWC-C
Operating Limits:
Thermal carrier : Water
Water temperature : 4 ~ 10°C (Cooling), 35°C ~ 50°C (Heating)
Maximum water pressure : 16 bar
Air temperature : (as below)
Cooling Mode
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature 19.0 / 66.2 14.0 / 57.2
Maximum indoor
temperature 32.0 / 89.6 23.0 / 73.4
Heating Mode
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature 15.0 / 59.0 -
Maximum indoor
temperature 27.0 / 80.6 -
Ts: Dry bulb temperature. Th: Wet bulb temperature.

7
Application Information
Model: FWC-G (MSP) , FWC-G EC (LSP & MSP)
Operating Limits:
Thermal carrier : Water
Water temperature : 4 ~ 10°C (Cooling)
Maximum water pressure : 16 bar
Air temperature : (as below)
Cooling Mode
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature 19.0 / 66.2 14.0 / 57.2
Maximum indoor
temperature 32.0 / 89.6 23.0 / 73.4
Model: FUD
Operating Limits:
Thermal carrier : Water
Water temperature : 4 ~ 10°C (Cooling), 35°C ~ 70°C (Heating)
Maximum water pressure : 16 bar
Air temperature : (as below)
Cooling Mode
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature 19.0 / 66.2 14.0 / 57.2
Maximum indoor
temperature 32.0 / 89.6 23.0 / 73.4
Heating Mode
Temperature Ts °C/°F Th °C/°F
Minimum indoor
temperature 15.0 / 59.0 -
Maximum indoor
temperature 27.0 / 80.6 -
Ts: Dry bulb temperature. Th: Wet bulb temperature.

8
Application Information
Installation Guide
System Conguration
The standard controller board comes with a VALVE jumper and a HEAT jumper. The system can be
congured as the jumper selection listed below:
HEAT Jumper VALVE Jumper
Heatpump Mode & Valve Application √ √
Heatpump Mode & Valveless Application √X
Cooling Mode & Valve Application X√
Cooling Mode & Valveless Application X X
√ Jumper Remained X Jumper Removed
Caution
Disconnect the power supply to the unit before attempting to connect the wiring
Valve, Heat and Fan Priority Setting
Model: FWW-L
HEAT
VALVE
BLACK
N
CN_FAN
CN_PGRM CN_WIR CN_DSP
VALVE HEAT
VALVE
CN_STP
CN_ID COIL
CN_FAN FB
L
BLACK (LIVE)
RED (FAN CAP)
WHITE (NEUTRAL)
Valve Jumper
Heat Jumper
WHITE
BROWN
BLACK
BLUE BLUE
RED
G/Y
NOTATION
FM : FAN MOTOR
AS : AIR SWING MOTOR
TH1 : INDOOR COIL THERMISTOR
TH2 : ROOM THERMISTOR
-WITH JUMPER FOR HEAT PUMP
-WITHOUT JUMPER FOR COOLING ONLY
-WITH JUMPER FOR VALVE APPLICATION
FIELD WIRING
-WITHOUT JUMPER FOR VALVELESS APPLICATION
2/3 WAY VALVE
LPOWER
SUPPLY
TH2
TH1
DISPLAY BOARD
WIRED
CONTROLLER
(OPTIONAL)
N
E
VALVE N1 N L
AS
FM

9
Application Information
Model: FWKE/FWC-C
HTR
L
Heat Jumper Fan Priority Jumper
N2
LIVE
N1
HI
MED
LOW
CN_TW
CN_PGRM
CN_WIR
ROOM CN_STP C_SENH_SEN
HEAT
VALVE
CN_DSP
SHED
M4
M3
M2
M1
TFULLA_FRZ W_OPEN UNOCP
SLIENT
CVLV
HVLV
WTP
AS
CN_DRY
Valve Jumper
CO_DRAFT
Jumper With Jumper (Default) Without Jumper
Fan Priority Jumper User set speed or lower fan if auto
mode is selected Fan Stop when thermostat cat off
Heat Jumper For Heat pump For Cooling only
Valve Jumper For valve control For valveless control
4 pipes system controller board setting
Model : FWKE-E(H)
Model
1
Model
2
Model
3
Model
4
HTR
L
N2
LIVE
N1
HI
MED
LOW
CN_TW
CN_PGRM
CN_WIR
ROOM CN_STP C_SENH_SEN
HEAT
VALVE
CN_DSP
SHED
M4
M3
M2
M1
TFULLA_FRZ W_OPEN UNOCP
SLIENT
CVLV
HVLV
WTP
AS
CN_DRY
CO_DRAFT

10
Application Information
The standard controller board (W3) comes with a default setting for model selection.
Please select the model accordingly by using jumper.
System Model Function
2 Pipe
System
4 Pipe
System
M1 -
Model 1
M2 -
Model 2
M3 -
Model 3
M4 -
Model 4
Cooling or Heating
Cooling or Heating with Auxiliary Heater
Cooling Only with Boiler
Cooling or Heating with Boiler
FCU
FCU
FCU
FCU
FCU
FCU
FCU
FCU
Mini Chiller (Cooling Only)
Mini Chiller (Cooling Only)
Boiler
Boiler
Mini Chiller (Cooling / Heating)
Mini Chiller (Cooling / Heating)
NOTE :
i) Auto Fan Mode is only applicable in Model 3 only. (Cooling only with Boiler)
ii) Fan mode is not available in valveless control.
iii) Wired handset has an indoor room sensor. Avoid locating the wired handset at isolated places where room
temperature reading will be inaccurate.

11
Application Information
Indoor Installation
Model: FWW-L
The indoor unit must be installed in such a way so as to prevent short circuit of the cool discharged air with
the hot return air. Please follow the installation clearance shown in the gure. Do not place the indoor unit
where there could be direct sunlight shining on it. Also, this location must be suitable for piping and drainage,
and be away from doors or windows.
All dimensions are in mm
min. 50
(Space for
maintenance)
Air flow
(Indoor)
min. 50
(Space for
maintenance)
min. 75 (Space for performance)
Required space
Air Purging
To prevent pump damage, the fan coil unit should not be energized until the coil and all water lines have
been purged of air.
The Air Vent located inside the casing. Removed the casing and connect hose to the air vent while doing
purging.
Ensure there is no water droplets go into the control box during purging process.
The water piping can be routed to the unit in a number of ways (left or right from the back of the unit), by
using the cut-out holes on the casing of the unit (see gure). Bend the pipes carefully to the required position
in order to align it with the holes. For the side and bottom, hold the bottom of the piping and then position it to
the required direction (see gure). The condensation drain hose can be taped to the pipes.
Right-side, right-back or right-bottom piping
Right-back piping
Right-bottom
piping
Right-side piping
Left-back piping
Left-side piping
Left-bottom piping
Left-side, left-back or left-bottom piping
Remove pipe port cover here
for left-bottom piping
Remove pipe port
cover here for
left-side piping
Remove pipe port cover here
for right-bottom piping
Bind coolant pipe
and drain hose
together with
insulating tape.
Remove pipe port cover here
for right-side piping

12
Application Information
Mounting Installation Plate
Ensure that the wall is strong enough to withstand the weight of the unit. Otherwise, it is necessary to
reinforce the wall with plates, beams or pillars.
Use the level gauge for horizontal mounting, and x it with 5 suitable screws for FWW02/03/04L and 7
suitable screws for FWW05/06L.
In case the rear piping draws out, drill a hole 65mm in diameter with a cone drill, slightly lower on the outside
wall (see gure).
Mounting plate
Mounting plate fixing screw
FWW05/06L
Mounting plate
Mounting plate fixing screw
FWW02/03/04L
Mounting plate
Mounting plate
fixing screw
(ALTERNATIVE INSTALLATION PLATE)FWW02/03/04L
Model: FWKE
1. Preliminary Site Survey
Be sure to read this manual before installing the air-conditioner indoor unit.
• Voltage supply uctuation must not exceed +10% of rated voltage. Electricity supply lines must be
independent of welding transformers which can cause high supply uctuation.
• Ensure that the location is convenient for wiring, piping and drainage.
• Do not exert pressure on the resin parts when opening the unit or when moving it after opening.
• Do not move the unit from packaging while moving, until it reaches the installation site. Use safe material
or protection plates when unpacking it or lifting it to avoid damage or scratches to the unit.
eromrom5.0eromrom5.0eromrom5.0
3m or more
3m or more
1m or more
Floor
Obstacle
Beam
• Ensure a location where:
a) Drainage can be done easily.
b) Convenient for wiring and piping.
c) Which have enough space for installation and service work.
d) Where no risk of ammable gas leakage.
e) When free from any obstacles in path of cool air discharge and warm air return and must allow
spreading of air throughout the room (near the center of the room).
f) Must be provided clearance for indoor unit from the wall and obstacles as shown in gure below.
g) The installation place must be strong enough to support a load 4 times the indoor unit weight to avoid
amplifying noise and vibration.
h) The installation place (hanging ceiling surface) must be assuring levelness and the height in the ceiling
is 350mm or more.
i) The indoor unit must be away from heat and steam sources (avoid installing it near an entrance).

13
Application Information
Unit Installation
• Measure and mark the position for the hanging rod. Drill the hole for the angle nut on the ceiling and x the
hanging rod.
• The installation template is extended according to temperature and humidity. Check on dimensions in use.
• The dimensions of the installation template are the same as those of the ceiling opening dimensions.
• Before ceiling laminating work is completed, be sure to t the installation template to the indoor unit.
NOTE
Be sure to discuss the ceiling drilling work with the installers concerned.
FWKE
Unit size 820mm
Piping Direction
Ceiling Opening Site = 890mm
Ceiling Opening Site = 890mm
Hanging Rod Site = 790mm
Unit size 820mm
Unit
Hanging Rod Site = 621mm
Unit Hanging
• Conrm the pitch of the hanging rod.
• Hold the unit and hang it on the hanging rod with the nut and washer.
• Adjust the unit height to 35.0mm between the indoor unit bottom surface and the ceiling surface.
• Conrm with a level gauge that the unit is installed horizontally and tighten the nut and bolt to prevent unit
failing and vibration.
• Open the ceiling board along the outer edge of the paper installation template.
Indoor Unit
Ceiling
Board
35.0 mm
35.0mm
Indoor Unit
Ceiling
Board
Drain Piping Work
• Drain pipe must be in downward gradient for smooth drainage.
• Avoid installing the drain pipe in up and down slope to prevent reversed water ow.
• During the drain pipe connection, be careful not to exert extra force on the drain connector at indoor unit.
• The outside diameter of the drain connection at the exible drain hose is 20mm.
• Be sure to execute heat insulation (polyethylene foam with thickness more than 8.0mm) on the drain
piping to avoid the condensed water dripping inside the room.
Pipe Clamp
Ceiling
700.0mm
or less
Panel
Flexible Hose
Indoor
Unit

14
Application Information
Drain Test
• Connect the main drain pipe to the exible drain.
• Feed water from exible drain hose to check the piping for leakage.
• When the test is completed, connect the exible drain hose to the drain connector on the indoor unit.
Feed Water
Flexible Drain Hose
Main Drain Pipe
NOTE
This Indoor Unit uses a drain pump for condensed water drainage. Install the unit horizontally to prevent
water leakage or condensation around the air outlet.
•
Model: FWC-C
The indoor unit must be installed such that there is no short circuit of the cool discharge. Respect the
installation clearance. Do not put the indoor unit where there is direct sunlight on unit. The location is suitable
for piping and drainage and it must have a large distance between a door and unit.
Ceiling Concealed Mounting
• Use the hanger supplied with the unit.
• Make sure that the ceiling is sufciently strong to withstand the weight.
Insulation material
(eld supply)
Aluminium tape
(eld supply)
Aluminium tape
(eld supply)
Air outlet side
Air inlet side
See
Detail A
Field supply
W
asher for hanger bracket
(attached)
Tighten
Detail A
Provide clearance for servicing ease and optimal air ow as shown in the diagram.
300mm* or more
300mm
or more
10mm
* Can be smaller than 300mm if ceiling is removable.
Floor
2300mm or more
Ceiling

15
Application Information
Ceiling Concealed Drain Piping Work
Unit : mm
Do not leave in water
Bottom of
the unit
or more or more
Drain
trap
S
l
a
n
t
Insulate securely
10mm (0.39")
100 100
• The drain pipe must be installed as shown in the diagram (see diagram above) to avoid damage caused
by leaks and condensation.
• For the best result, keep the piping as short as possible. Slant the piping at an angle to improve the ow.
• Ensure the drain pipe is securely insulated.
• It is necessary to provide a drain trap in the drain outlet to relieve pressure that exists within the unit
compared to the outside atmospheric pressure when the unit is operating. The drain trap is to avoid
possibility of splashes or an odor.
• Keep pipes as straight as possible for easy cleaning and to prevent the accumulation of dirt and debris.
• Conduct a water drainage test after the installation is completed. Make sure that the drainage ow is
smooth.
• In humid environments, use an extra drain pan to cover the entire area of the indoor unit.

16
Application Information
Model: FWC-G (MSP)
The indoor unit must be installed such that there is no short circuit of the cool discharge. Respect the
installation clearance. Do not put the indoor unit where there is direct sunlight on unit. The location is suitable
for piping and drainage and it must have a large distance between a door and unit.
Ceiling Concealed Mounting
• Use the hanger supplied with the unit.
• Make sure that the ceiling is sufciently strong to withstand the weight.
Provide clearance for servicing ease and optimal air ow as shown in the diagram.
Ceiling Concealed Drain Piping Work
• The drain pipe must be installed as shown in the diagram (see diagram above) to avoid damage caused
by leaks and condensation.
• For the best result, keep the piping as short as possible. Slant the piping at an angle to improve the ow.
• Ensure the drain pipe is securely insulated.
• It is necessary to provide a drain trap in the drain outlet to relieve pressure that exists within the unit
compared to the outside atmospheric pressure when the unit is operating. The drain trap is to avoid
possibility of splashes or an odor.
• Keep pipes as straight as possible for easy cleaning and to prevent the accumulation of dirt and debris.
• Conduct a water drainage test after the installation is completed. Make sure that the drainage ow is smooth.
• In humid environments, use an extra drain pan to cover the entire area of the indoor unit.