Daikin FWP CT User manual

TECHNICAL MANUAL
FWP CT/CF
EN
24
Brushless 2 pipes systems 4 pipes systems Centrifugal fan Ducted
FEATURES
» Permanent magnet EC motor
» Low electricity consumption
» Easy setup of ventilation section
» Heat exchanger up to 4 rows
» Compact dimensions
» Reversible water connections
» Wide range of available accessories
2-8 kW
Medium static pressure ducted fan coil units with EC motors
UT66002766-02 04/21

OPERATING LIMITS
Thermal carrier uid: water
Water temperature: 5 °C ÷ 90 °C
Air temperature: -20 °C ÷ 40 °C
Control voltage: 230 V
Maximum operating pressure: 16 bar
Limit of room air relative humidity: RH<85% not
condensing
TABLE OF CONTENTS
1 MAIN FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4
1.1 PERFORMANCE AND COMPACTNESS IN
RECESSED CEILING INSTALLATIONS . . . . . . . . . . . p. 4
2 MAIN COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . p. 4
STRUCTURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4
ELECTRIC MOTOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4
AIR FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4
2.1 AIR INTAKE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4
HEAT EXCHANGER . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4
FANS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4
3 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 5
3.1 INSTALLATION REQUIREMENTS. . . . . . . . . . . . . . . . p. 5
3.2 ASSEMBLY OF UNITS . . . . . . . . . . . . . . . . . . . . . . . . . . p. 6
4 AVAILABLE ACCESSORIES . . . . . . . . . . . . . . . . . p. 7
5 RATED TECHNICAL DATA . . . . . . . . . . . . . . . . . . p. 8
6 WEIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 10
7 SOUND POWER LEVELS FOR 2-PIPES
OCTAVE BAND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 10
7 SOUND POWER LEVELS FOR OCTAVE
BAND 4 PIPE SYSTEMS AND 1 ROW . . . . . . p. 11
8 OVERALL DIMENSIONS . . . . . . . . . . . . . . . . . . . p. 12
9 ELECTRICAL CONNECTIONS. . . . . . . . . . . . . . p. 14
10 ELECTRICAL WIRES . . . . . . . . . . . . . . . . . . . . . . . . p. 15
11 ACCESSORIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 17
12 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 19
12.1 CLEANING THE AIR FILTER. . . . . . . . . . . . . . . . . . . . p. 19
12.2 CLEANING THE HEAT EXCHANGER . . . . . . . . . . . p. 19

FWPC
TECHNICAL MANUAL4
1 MAIN FEATURES
PERFORMANCE AND COMPACTNESS IN RECESSED CEILING INSTALLATIONS
The range is completed by FWP-C, which uses inverter EC technology in the electric motors. To the features of FWP-C adds the ben-
ets of brushless technology, including a reduction in electricity consumption and consequent reduction in CO2emissions, increase
in operating exibility thanks to the modulation of air ow and increase in the level of comfort in terms of temperature, humidity
and noise levels.
The range is made up of 8 models with air ows from 300 to 1200 m³/h.
Continuous modulation of the air ow and the use of high-eciency heat exchangers enables operation also with small air-water
temperature dierences.
The heat exchangers can also be optimized in the circuit for centralized applications such as district cooling.
2 MAIN COMPONENTS
STRUCTURE
Built from galvanised steel sheet, heat and sound insulated by means of Class 1 self-extinguishing panels. Reduced height to facilitate
installation in a horizontal position in a false ceiling. The structure incorporates a drip tray and condensate drain outlet.
The main condensate drip tray is situated inside the structure of the unit and is at a positive pressure relative to the drain outlet to
facilitate condensate drainage.
HEAT EXCHANGER
High eciency standard with 3 rows, but also available with 4 rows upon request, heat exchanger made with copper piping and
aluminium ns blocked to pipings by mechanical expansion, provided with brass manifolds and air vent valve.The heat exchanger
usually comes with water connections mounted on the left, but it can be turned by 180°. High-eciency heat exchangers optimized
for district cooling applications are available on request.
FANS
Double suction centrifugal fans made with ABS or aluminium, with statically and dynamically balanced forward-curving blades,
directly coupled to the electric motor.
EC MOTOR
Single-phase asynchronous multi-speed electric motor with permanently connected capacitor and thermal protector, mounted on
vibration-damping supports.
AIR FILTER
Washable air lter, made of acrylic bre, ltration class G3, applied on the air intake; may be pulled out from below.
AIR INTAKE
Air intake from the front or bottom of the unit, according to system requirements.
INSTALLATION EXAMPLE
The bearing structure allows to combine a large range of accessories in suction and air delivery in order to obtain the optimized unit
conguration.

UT66002766-02
All copying, even partial, of this manual is strictly forbidden 5
3 INSTALLATION
WARNING: unit installation and start-up must be entrusted
to competent personnel and performed in a workmanlike
manner, in accordance with current regulations.
WARNING: Install the ducted unit, the line switch (IL) and/or
all remote controls in a position out of the reach of persons
who are in the bathroom or in the shower.
DANGER: The unit may be used by children of at least 8
years of age and by persons with reduced physical, sen-
sory, or mental capabilities, or who lack experience or the
necessary knowledge, provided that they are supervised or
after they have received instructions relating to the safe use
of the unit and understand the inherent dangers. Children
must not play with the unit. Cleaning and maintenance to
be carried out by the user must not be performed by unsu-
pervised children.
IMPORTANT: It is advisable to install any accessories on the
standard unit prior to positioning the latter, making refer-
ence to the technical sheets. The air intake and outlet have
a rectangular cross-section, with pre-cut holes for fastening
the available accessories.
The heat exchanger connections can be switched over to the op-
posite side by carrying out the following steps:
 remove the upper closing panel.
 remove the collecting condensate tray.
 remove the heat exchanger module by taking out the fas-
tening screws (2 per side).
 turn the heat exchanger by 180° (on the vertical axis) and
screw it back into the unit again.
 reassemble the tray and the upper closing panel.
3.1 INSTALLATION REQUIREMENTS
Some rules to follow
 Vent air from the exchanger while the pumps are o. For
this purpose use the air vent valves situated next to the ex-
changer connections.
 All ducts, especially the outlet ducts, must be insulated with
anti-condensation material.
 An inspection panel must be provided in proximity to the
unit to enable maintenance and cleaning operations.
 Install the control panel on the wall; choose an accessible
position from where functions may be easily set and which is
suitable for taking temperature readings, where applicable.
Avoid positions directly exposed to sunlight or direct cur-
rents of hot or cold air and make sure there are no obstacles
which may preclude a correct temperature reading.
WARNING:
In normal operation, particularly with the fan at minimum
speed and ambient air with high relative humidity, conden-
sation may form on the air outlet and on some external parts
of the unit.
To avoid such issues while always remaining within the oper-
ating limits envisaged for the unit, it is necessary to limit the
inlet temperature of the water inside the heat exchanger. In
particular, the dierence between the air dew point (TA,DP)
and the inlet water temperature (TW) must NOT exceed 14
°C, according to the following relationship: TW>TA,DP-14
°C
Example: in the case of ambient air at 25 ° C with 75% rela-
tive humidity, the dew point temperature is about 20 ° C and
therefore the inlet temperature of the water in the battery
must be greater then:
 20-14 = 6 °C in order to avoid condensation on a fancoil
equipped with a valve.
 20-12 = 8 °C If the valve kit accessory can not be installed.
Fan coil with valve
Air temperature dry bulb (°C)
21 23 25 27 29 31 33
Relative
humidity %
40 5555555
50 5555568
60 55557911
70 5 5 6 8 9 11 13
80 5 6 8 10 12 14 16
90 6 8 10 12 14 16 18
Fan coil without valve
Air temperature dry bulb (°C)
21 23 25 27 29 31 33
Relative
humidity %
40 6666666
50 66666810
60 6 6 6 7 9 11 13
70 6 6 8 10 11 13 15
80 6 8 10 12 12 16 18
90 8 10 12 14 14 18 20
In the event the indoor unit is stopped for a prolonged peri-
od, with the fan stopped and circulation of cold water in the
heat exchanger, condensation may also form on the unit’s
exterior. In this case it is advisable to install the 3-way (or
2-way) valve accessory in order to stop the ow of water in
the coil when the fan is stopped.
During wintertime periods of shut down, drain water from the
system, to prevent ice from forming. If anti-freeze solutions are
used, check for their freezing point using the table below.
% Glycol by weight Freezing
temperature (°C)
Capacity
adjustment
Pressure drop
adjustment
0 0 1,00 1,00
10 -4 0,97 1,05
20 -10 0,92 1,10
30 -16 0,87 1,15
40 -24 0,82 1,20

FWPC
TECHNICAL MANUAL6
3.2 TROUBLESHOOTING
If the unit is not working properly, before calling a service engi-
neer carry out the checks indicated in the table below.
If the problem cannot be solved, contact your dealer or the near-
est service centre.
PROBLEM CAUSE SOLUTION
The unit fails to work
No power supply Restore the power supply
The automatic safety cutout has tripped Call a service centre for assistance
The on/off switch is on Start the unit by moving the switch to ON
The unit provides insufficient cooling
or heating
The air filter is dirty or clogged Clean the air filter
An obstacle is obstructing the air intake or outlet Remove the obstacle
Air is trapped inside the heat exchanger Call the installer for assistance
There are open windows and/or doors Close windows and/or doors
The minimum speed has been selected Select medium or maximum speed
The unit“leaks”water The unit has not been installed with the correct inclination Call the installer for assistance
The drainage outlet is clogged Call the installer for assistance
3.2 ASSEMBLY OF UNITS
Mounting the unit
Insert the vibration dampers provided in the 4 slots indicated for
ceiling installation
Fasten the base unit to the ceiling or wall using at least 4 of the
8 slots provided.
 It is recommended to use 8MA threaded bars plus screw an-
chors of adequate capacity to bear the weight of the unit,
and to prepare the positioning of the unit using 3 8MA bolts
(2 in the lower part, 1 in the upper part as shown in g-
ure p.6) and two washers for each bar. Before tightening
the lock nut, adjust the main nut so as to assure that the unit
is properly inclined so as to facilitate condensate drainage
(gure p.6). To obtain the proper inclination, tilt the unit
so that the intake side is slightly lower (approximately 10
mm) than the outlet side. Make the plumbing connections
to the heat exchanger and, where the cooling function is to
be used, to the condensate drainage outlet. Use one of the
two tray drain outlets, which can be seen on the outside of
the unit side panels.
 To connect the unit to the drainage line, use a exible rub-
ber hose and secure it to the pre-selected drain pipe (ø 3/8'')
using a metal clamp (use the drain outlet situated on the
plumbing connection side).

» Ceiling installation unit
1x8MA
2x8MA
» Condensate discharge proper inclination
10

UT66002766-02
All copying, even partial, of this manual is strictly forbidden 7
4 AVAILABLE ACCESSORIES
Electronic microprocessor control panels with display
FWECSAP Circuit board for FWECS control
FWECSAC User interface with display for FWECS controller
FWEC3A FWEC3A electronic controller with display
FWHSKA Humidity sensor for FWEC3A, FWECS
FWTSKA Water sensor for FWEC3A and FWECS controllers
Auxiliary water drip trays, insulating shell, condensate drainage pump
CDRP1A Condensate drainage pump kit
Electrical heating elements
EH Heating element with installation kit, relay box and safety devices
Accessories
EPIMSB6 Power interface for connecting in parallel up to 4 fan coil units to the one controller
EDPD Auxiliary water drip tray
Valves
2-way valves, ON/OFF or MODULATING actuator, 230 V or 24V power supply, hydraulic kit, for
additional heat exchanger
2-way valve, ON/OFF or MODULATING actuator, 230 V or 24V power supply, hydraulic kit, for main heat
exchanger
3-way valves, ON/OFF or MODULATING actuator, 230 V or 24V power supply, hydraulic kit, for
additional heat exchanger
3-way valves, ON/OFF or MODULATING actuator, 230 V or 24V power supply, hydraulic kit, for main
heat exchanger
2-way valves pressure independent, ON/OFF or MODULATING actuator, 230 V or 24V power supply,
hydraulic kit, for main and additional heat exchanger

FWPC
TECHNICAL MANUAL8
5 RATED TECHNICAL DATA
» 2 pipes
FWP-C 04 05 06 08
Speed
min med max min med max min med max min med max
Declared speed 2,5,7 1,5,7 1,6,7 1,4,7
Control voltage (E) V 2,90 8,00 9,00 4,30 7,50 8,40 4,50 7,40 8,30 5,40 8,30 9,90
Rated air flow (E) m³/h 109 246 276 171 275 341 195 360 402 305 532 652
Available static pressure (E) Pa 10 50 63 19 50 77 19 50 63 17 50 75
Power input (E) W 6 25 33 10 24 39 10 26 35 22 51 77
Maximum current absorption A 0,32 0,60 0,84 0,84
Total cooling capacity (1)(E) kW 0,93 1,76 1,95 1,29 1,95 2,34 1,59 2,74 3,04 1,98 3,26 3,79
Sensible cooling capacity (1)(E) kW 0,62 1,25 1,39 0,91 1,39 1,66 1,09 1,91 2,11 1,48 2,48 2,92
FCEER class (E) A
Water flow (2) l/h 161 306 340 222 339 408 274 476 527 343 568 664
Water pressure drop (2)(E) kPa 2563683793811
Heating capacity (3)(E) kW 0,88 1,81 1,99 1,33 1,98 2,35 1,59 2,80 3,10 2,35 3,71 4,31
FCCOP class (E) A
Water flow (3) l/h 153 315 346 231 345 408 276 488 538 408 644 749
Water pressure drop (3)(E) kPa 1452572684911
Standard coil - number of rows 3343
Total sound power level (4) dB(A) 28 49 52 39 50 54 39 50 54 38 52 58
Inlet + radiated sound power level (4)(E) dB(A) 26 47 50 37 48 52 37 48 52 36 50 56
Outlet sound power level (4)(E) dB(A) 25 46 49 36 47 51 36 47 51 35 49 55
Water content - standard coil dm³ 1,20 1,20 2,20 1,60
Cross-section area of power cables (5) mm² 1,00 1,00 1,00 1,00
Power supply cable type N07V-K
Safety fuse F A 1111
Fuses type gG
FWP-C 10 11 15 17
Speed
min med max min med max min med max min med max
Declared speed 1,6,7 1,6,7 5,6,7 5,6,7
Control voltage (E) V 3,40 7,60 8,50 3,40 7,60 8,50 6,80 7,50 8,30 6,80 7,50 8,30
Rated air flow (E) m³/h 333 687 760 333 687 760 1050 1163 1289 1050 1163 1289
Available static pressure (E) Pa 12 50 61 12 50 61 40 50 60 40 50 60
Power input (E) W 11 54 68 11 54 68 105 128 162 105 128 162
Maximum current absorption A 0,91 0,91 3,52 3,52
Total cooling capacity (1)(E) kW 2,29 4,34 4,75 2,51 4,91 5,35 6,28 6,81 7,38 7,04 7,64 8,28
Sensible cooling capacity (1)(E) kW 1,67 3,21 3,51 1,77 3,45 3,76 4,64 5,03 5,46 4,96 5,38 5,84
FCEER class (E) A A C B
Water flow (2) l/h 394 753 828 432 850 930 1094 1190 1295 1225 1332 1448
Water pressure drop (2)(E) kPa 2 7 8 3 10 12 13 16 18 20 23 26
Heating capacity (3)(E) kW 2,54 4,76 5,17 2,63 5,03 5,49 6,68 7,22 7,80 7,18 7,80 8,46
FCCOP class (E) A A B B
Water flow (3) l/h 441 827 898 457 875 955 1162 1256 1356 1248 1355 1471
Water pressure drop (3)(E) kPa 2 7 8 3 9 11 12 14 16 17 19 22
Standard coil - number of rows 3434
Total sound power level (4) dB(A) 38 55 58 38 55 58 61 63 69 61 63 69
Inlet + radiated sound power level (4)(E) dB(A) 36 53 56 36 53 56 59 61 67 59 61 67
Outlet sound power level (4)(E) dB(A) 35 52 55 35 52 55 58 60 66 58 60 66
Water content - standard coil dm³ 2,50 3,30 2,50 3,30
Cross-section area of power cables (5) mm² 1,00 1,00 1,50 1,50
Power supply cable type N07V-K
Safety fuse F A 1122
Fuses type gG
(1) Water temperature 7°C / 12°C, air temperature dry bulb 27°C, wet bulb 19°C (47% relative humidity) according to EN1397:2015
(2) Water temperature 7°C / 12°C, air temperature dry bulb 27°C, wet bulb 19°C (47% relative humidity)
(3) Water temperature 45°C / 40°C, air temperature 20°C
(4) Sound power measured according to standards ISO 3741 and ISO 3742
(5) Sound pressure measured at a distance of 4 m in a free field with a directivity factor of 1
(E) EUROVENT certified data
Power supply 230-1-50 (V-ph-Hz)

UT66002766-02
All copying, even partial, of this manual is strictly forbidden 9
» 4 pipes
FWP-C 04 05 06 08
Speed
min med max min med max min med max min med max
Declared speed 2,5,7 1,5,7 1,6,7 1,4,7
Control voltage (E) V 2,90 7,90 8,90 4,50 7,30 8,90 4,50 7,40 8,30 5,40 8,30 9,90
Rated air flow (E) m³/h 109 243 270 170 272 336 195 357 398 302 524 642
Available static pressure (E) Pa 10 50 63 19 50 77 19 50 63 17 50 75
Power input (E) W 6 25 32 10 23 39 10 26 35 21 50 77
Maximum current absorption A 0,32 0,60 0,84 0,84
Total cooling capacity (1)(E) kW 0,93 1,74 1,91 1,28 1,93 2,31 1,59 2,72 3,01 1,95 3,22 3,75
Sensible cooling capacity (1)(E) kW 0,62 1,24 1,36 0,90 1,38 1,64 1,09 1,89 2,09 1,47 2,44 2,89
FCEER class (E) A
Water flow (2) l/h 161 302 333 221 335 404 274 473 522 339 562 656
Water pressure drop (2)(E) kPa 2563683793811
Heating capacity (3)(E) kW 1,14 1,93 2,06 1,55 2,07 2,32 2,09 3,09 3,29 2,80 3,82 4,24
FCCOP class (E) A
Water flow (3) l/h 100 169 180 136 181 204 183 271 288 245 334 371
Water pressure drop (3)(E) kPa 123233234356
Standard coil - number of rows 28 49 52 39 50 54 39 50 54 38 52 58
Total sound power level (4) dB(A) 3+1 3+1 4+1 3+1
Inlet + radiated sound power level (4)(E) dB(A) 26 47 50 37 48 52 37 48 52 36 50 56
Outlet sound power level (4)(E) dB(A) 25 46 49 36 47 51 36 47 51 35 49 55
Water content - standard coil dm³ 0,47 0,47 0,59 0,59
Cross-section area of power cables (5) mm² 1,00 1,00 1,00 1,00
Power supply cable type N07V-K
Safety fuse F A 1111
Fuses type gG
FWP-C 10 11 15 17
Speed
min med max min med max min med max min med max
Declared speed 1,6,7 1,6,7 5,6,7 5,6,7
Control voltage (E) V 3,40 7,60 8,50 3,40 7,60 8,50 6,80 7,50 8,30 6,80 7,50 8,30
Rated air flow (E) m³/h 333 683 755 333 683 755 1050 1163 1289 1050 1163 1289
Available static pressure (E) Pa 12 50 61 12 50 61 40 50 60 40 50 60
Power input (E) W 11 54 67 11 54 67 105 128 162 105 128 162
Maximum current absorption A 0,91 0,91 3,52 3,52
Total cooling capacity (1)(E) kW 2,29 4,32 4,72 2,51 4,88 5,32 6,28 6,81 7,38 7,04 7,64 8,28
Sensible cooling capacity (1)(E) kW 1,67 3,19 3,48 1,77 3,43 3,74 4,64 5,03 5,46 4,96 5,38 5,84
FCEER class (E) A A C B
Water flow (2) l/h 394 749 822 432 846 925 1094 1190 1295 1225 1332 1448
Water pressure drop (2)(E) kPa 2 7 8 3 10 12 13 16 18 20 23 26
Heating capacity (3)(E) kW 3,40 5,17 5,45 3,40 5,17 5,45 6,42 6,73 7,06 6,42 6,73 7,06
FCCOP class (E) A A C C
Water flow (3) l/h 297 452 477 297 452 477 562 589 618 562 589 618
Water pressure drop (3)(E) kPa 6 13 14 6 13 14 19 21 22 19 21 22
Standard coil - number of rows 38 55 58 38 55 58 61 63 69 61 63 69
Total sound power level (4) dB(A) 3+1 4+1 3+1 4+1
Inlet + radiated sound power level (4)(E) dB(A) 36 53 56 36 53 56 59 61 67 59 61 67
Outlet sound power level (4)(E) dB(A) 35 52 55 35 52 55 58 60 66 58 60 66
Water content - standard coil dm³ 0,97 0,97 0,97 0,97
Cross-section area of power cables (5) mm² 1,00 1,00 1,50 1,50
Power supply cable type N07V-K
Safety fuse F A 1122
Fuses type gG
(1) Water temperature 7°C / 12°C, air temperature dry bulb 27°C, wet bulb 19°C (47% relative humidity) according to EN1397:2015
(2) Water temperature 7°C / 12°C, air temperature dry bulb 27°C, wet bulb 19°C (47% relative humidity)
(3) Water temperature 65°C / 55°C, air temperature 20°C
(4) Sound power measured according to standards ISO 3741 and ISO 3742
(5) Sound pressure measured at a distance of 4 m in a free field with a directivity factor of 1
(E) EUROVENT certified data
Power supply 230-1-50 (V-ph-Hz)

FWPC
TECHNICAL MANUAL10
6 WEIGHTS
7 SOUND POWER LEVELS FOR 2PIPES OCTAVE BAND
Model V
Lw
IN+R 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz Lw OUT 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz
dB(A) dB dB dB dB dB dB dB dB(A) dB dB dB dB dB dB dB
04
max 26 32,6 32,0 22,8 13,6 7,1 7,4 11,5 25 28,7 28,6 25,2 15,0 6,9 2,6 5,8
med 47 48,0 46,1 46,4 42,1 36,4 26,0 18,0 46 48,7 48,5 43,6 41,1 34,8 26,5 16,9
min 50 51,5 48,7 48,6 45,5 40,6 31,2 21,3 49 51,0 51,6 45,7 44,4 38,6 31,2 21,1
05
max 37 43,6 43,0 33,8 24,6 18,1 18,4 22,5 36 39,7 39,6 36,2 26,0 17,9 13,6 16,8
med 46 47,0 45,1 45,4 41,1 35,4 25,0 17,0 45 47,7 47,5 42,6 40,1 33,8 25,5 15,9
min 52 53,5 50,7 50,6 47,5 42,6 33,2 23,3 51 53,0 53,6 47,7 46,4 40,6 33,2 23,1
06
max 37 43,6 43,0 33,8 24,6 18,1 18,4 22,5 36 39,7 39,6 36,2 26,0 17,9 13,6 16,8
med 48 49,0 47,1 47,4 43,1 37,4 27,0 19,0 47 49,7 49,5 44,6 42,1 35,8 27,5 17,9
min 52 53,5 50,7 50,6 47,5 42,6 33,2 23,3 51 53,0 53,6 47,7 46,4 40,6 33,2 23,1
08
max 36 42,6 42,0 32,8 23,6 17,1 17,4 21,5 35 38,7 38,6 35,2 25,0 16,9 12,6 15,8
med 50 51,0 49,1 49,4 45,1 39,4 29,0 21,0 49 51,7 51,5 46,6 44,1 37,8 29,5 19,9
min 56 57,5 54,7 54,6 51,5 46,6 37,2 27,3 55 57,0 57,6 51,7 50,4 44,6 37,2 27,1
10
max 36 42,6 42,0 32,8 23,6 17,1 17,4 21,5 35 38,7 38,6 35,2 25,0 16,9 12,6 15,8
med 53 54,0 52,1 52,4 48,1 42,4 32,0 24,0 52 54,7 54,5 49,6 47,1 40,8 32,5 22,9
min 56 57,5 54,7 54,6 51,5 46,6 37,2 27,3 55 57,0 57,6 51,7 50,4 44,6 37,2 27,1
11
max 36 42,6 42,0 32,8 23,6 17,1 17,4 21,5 35 38,7 38,6 35,2 25,0 16,9 12,6 15,8
med 53 54,0 52,1 52,4 48,1 42,4 32,0 24,0 52 54,7 54,5 49,6 47,1 40,8 32,5 22,9
min 56 57,5 54,7 54,6 51,5 46,6 37,2 27,3 55 57,0 57,6 51,7 50,4 44,6 37,2 27,1
15
max 59 63,2 60,9 57,2 52,8 49,2 43,2 34,5 58 62,1 59,8 56,1 51,7 48,1 42,1 43,4
med 61 65,2 62,9 59,2 54,8 51,2 45,2 36,5 60 64,2 61,9 58,2 53,8 50,2 44,2 35,5
min 67 71,2 68,9 65,2 60,8 57,2 51,2 42,5 66 70,2 67,9 64,2 59,8 56,2 50,2 31,5
17
max 59 63,2 60,9 57,2 52,8 49,2 43,2 34,5 58 62,1 59,8 56,1 51,7 48,1 42,1 43,4
med 61 65,2 62,9 59,2 54,8 51,2 45,2 36,5 60 64,2 61,9 58,2 53,8 50,2 44,2 35,5
min 67 71,2 68,9 65,2 60,8 57,2 51,2 42,5 66 70,2 67,9 64,2 59,8 56,2 50,2 31,5
Data referring to filter G3 units at PU = 0 Pa - For all operating points and work limits not present in the upper table, refer to the factory selection program
LW _out: Octave sound power level - outlet
LW _In + R: Octave sound power level - inlet + radiated
FWP-C 04 05 06 08 10 11 15 17
2 pipes kg 24,4 25,4 33,0 36,0 45,0 45,0 51,0 51,0
4 pipes kg 25,8 26,8 34,6 37,6 47,5 47,5 53,5 53,5

UT66002766-02
All copying, even partial, of this manual is strictly forbidden 11
7 SOUND POWER LEVELS FOR 4PIPES OCTAVE BAND
Model V
Lw
IN+R 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz Lw OUT 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz
dB(A) dB dB dB dB dB dB dB dB(A) dB dB dB dB dB dB dB
04
max 26 32,6 32,0 22,8 13,6 7,1 7,4 11,5 25 28,7 28,6 25,2 15,0 6,9 2,6 5,8
med 47 48,0 46,1 46,4 42,1 36,4 26,0 18,0 46 48,7 48,5 43,6 41,1 34,8 26,5 16,9
min 50 51,5 48,7 48,6 45,5 40,6 31,2 21,3 49 51,0 51,6 45,7 44,4 38,6 31,2 21,1
05
max 37 43,6 43,0 33,8 24,6 18,1 18,4 22,5 36 39,7 39,6 36,2 26,0 17,9 13,6 16,8
med 46 47,0 45,1 45,4 41,1 35,4 25,0 17,0 45 47,7 47,5 42,6 40,1 33,8 25,5 15,9
min 52 53,5 50,7 50,6 47,5 42,6 33,2 23,3 51 53,0 53,6 47,7 46,4 40,6 33,2 23,1
06
max 37 43,6 43,0 33,8 24,6 18,1 18,4 22,5 36 39,7 39,6 36,2 26,0 17,9 13,6 16,8
med 48 49,0 47,1 47,4 43,1 37,4 27,0 19,0 47 49,7 49,5 44,6 42,1 35,8 27,5 17,9
min 52 53,5 50,7 50,6 47,5 42,6 33,2 23,3 51 53,0 53,6 47,7 46,4 40,6 33,2 23,1
08
max 36 42,6 42,0 32,8 23,6 17,1 17,4 21,5 35 38,7 38,6 35,2 25,0 16,9 12,6 15,8
med 50 51,0 49,1 49,4 45,1 39,4 29,0 21,0 49 51,7 51,5 46,6 44,1 37,8 29,5 19,9
min 56 57,5 54,7 54,6 51,5 46,6 37,2 27,3 55 57,0 57,6 51,7 50,4 44,6 37,2 27,1
10
max 36 42,6 42,0 32,8 23,6 17,1 17,4 21,5 35 38,7 38,6 35,2 25,0 16,9 12,6 15,8
med 53 54,0 52,1 52,4 48,1 42,4 32,0 24,0 52 54,7 54,5 49,6 47,1 40,8 32,5 22,9
min 56 57,5 54,7 54,6 51,5 46,6 37,2 27,3 55 57,0 57,6 51,7 50,4 44,6 37,2 27,1
11
max 36 42,6 42,0 32,8 23,6 17,1 17,4 21,5 35 38,7 38,6 35,2 25,0 16,9 12,6 15,8
med 53 54,0 52,1 52,4 48,1 42,4 32,0 24,0 52 54,7 54,5 49,6 47,1 40,8 32,5 22,9
min 56 57,5 54,7 54,6 51,5 46,6 37,2 27,3 55 57,0 57,6 51,7 50,4 44,6 37,2 27,1
15
max 59 63,2 60,9 57,2 52,8 49,2 43,2 34,5 58 62,1 59,8 56,1 51,7 48,1 42,1 43,4
med 61 65,2 62,9 59,2 54,8 51,2 45,2 36,5 60 64,2 61,9 58,2 53,8 50,2 44,2 35,5
min 67 71,2 68,9 65,2 60,8 57,2 51,2 42,5 66 70,2 67,9 64,2 59,8 56,2 50,2 31,5
17
max 59 63,2 60,9 57,2 52,8 49,2 43,2 34,5 58 62,1 59,8 56,1 51,7 48,1 42,1 43,4
med 61 65,2 62,9 59,2 54,8 51,2 45,2 36,5 60 64,2 61,9 58,2 53,8 50,2 44,2 35,5
min 67 71,2 68,9 65,2 60,8 57,2 51,2 42,5 66 70,2 67,9 64,2 59,8 56,2 50,2 31,5
Data referring to filter G3 units at PU = 0 Pa - For all operating points and work limits not present in the upper table, refer to the factory selection program
LW _out: Octave sound power level - outlet
LW _In + R: Octave sound power level - inlet + radiated

FWPC
TECHNICAL MANUAL12
8 OVERALL DIMENSIONS
» FWP-C 04-05-06-08
LEGEND
1 Water connections standard heat exchanger 1/2" female
2 Water connections additional heat exchanger 1/2" female
3 Condensate discharge diameter ø 17
FWP-C 04 05 06 08
A mm 758 758 968 968
C mm 677 677 887 887
D mm 648 648 858 858
E mm 707 707 917 917
300
300 140
100
15
250
15
103 102
26
33
D
C
21 197
605
665
26
A
E42
93
78
187
205
356
441
529
575
330
550
3
2
2
1
IN
IN
OUT
OUT

UT66002766-02
All copying, even partial, of this manual is strictly forbidden 13
» FWP-C 10-11-15-17
LEGEND
1 Standard heat exchanger water connections 3/4”female
2 Water connections additional heat exchanger 1/2" female
3 Condensate discharge diameter ø 17
300
300 140
100
3
2
2
1
21 227 33
15 D 15
C
685
745
120
26
155
26 E
A
385
503
596
618
43
113
220
210
360
630
108
280
IN
IN
OUT
OUT
FWP-C 10 11 15 17
A mm 1178 1178 1178 1178
C mm 1097 1097 1097 1097
D mm 1068 1068 1068 1068
E mm 1127 1127 1127 1127

FWPC
TECHNICAL MANUAL14
9 ELECTRICAL CONNECTIONS
Make the electrical connections with the power supply discon-
nected, in accordance with current safety regulations.
All the wiring must be done by qualied personnel.
For each thermal ventilating unit provide a main circuit
breaker (IL), with opening contacts separated by at least 3
mm and an adequate protection fuse (F).
Electrical intakes are shown on the rating labels on the units.
During installation, strictly abide by the indications on the wir-
ing diagram for the unit-control panel combination.
NOTE: The electric wires (power and control circuits) must be
pulled in through the gland on the side of the electric box
where the plumbing connections are located and then con-
nected to the terminals.
WARNING: COMMON motor wire = WHITE, wrong connec-
tion may cause serious damages to the motor.
10 ELECTRICAL WIRES
» General wiring diagram
Electrical wiring diagram
legend:
LPhase
NNeutral
CN Terminal board connector
FFuse (not supplied)
IL Circuit breaker (not
supplied)
... Wirings made by supplier
M Fan motor

UT66002766-02
All copying, even partial, of this manual is strictly forbidden 15
10 ELECTRICAL WIRES
» FWEC3A wiring diagram with built-in inverter motor
» FWEC3A wiring diagram with separated inverter motor

FWPC
TECHNICAL MANUAL16
» Wiring diagram FWECS
Electrical wiring diagram
legend:
Vo Inverter motor power
supply
LPhase
PE Ground
NNeutral
CN Terminal board connector
FFuse (not supplied)
IL Circuit breaker (not
supplied)
... Wirings made by supplier
WH White = common
BK Black = GND inverter
BU Blue = inverter neutral
motor
VC Cooling mode - solenoid
valve
VH Heating mode - solenoid
valve
DO1 Digital outlet 1
DO2 Digital outlet 2
102 Outlet 0-10V 2
101 Outlet 0-10V 1
COM Common outlet 0-10V
BN Brown = inverter motor
phase
CO12 Common digital outlet
GYNE Yellow/green = ground
(PE)
RD Red = 0-10V signal
RE Electric heater
SW Water sensor
SU Humidity sensor
SA Air sensor
DI1 Digital inlet 1
DI2 Digital inlet 2
CI12 Common digital inlet
A/B/GNDRS485

UT66002766-02
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11 ACCESSORIES
FWEC3A - wall-mounted microprocessor control
having the following main features:
• Room air temperature reading and adjustment
• Room humidity reading and adjustment
• Water temperature reading (water probe as an optional)
• Manual and automatic adjustment of fan speed
• Manualand automatic switching of heatingand cooling mode depending onthe water temperature within theheat exchanger or on theroom temperature, with
a neutral zone that can be selected in the range from 2° to 5°C.
• Clock and hourly timer-programmed operation
• 2 Analogue outputs for controlling modulating devices -10V
• 2 Digital outputs for controlling (On/Off) external devices (novoltage contacts)
• Serial port for Bus connection
The controller is equipped with a large display (3”) to show and set all the functions of the unit. Using the installation kit available, FWEC3A can be mounted on
the unit.
FWECS - wall-mounted microprocessor split controller with display
FWECS controller is a system composed of:
• Circuit board comprising the power circuit, the microprocessor system and the removable screw connectors for the connection of the inlet and outlet devices;
• User interface comprising a graphic display and a keyboard (six keys) provided with clock and sensor to read the ambient temperature.
Main functions:
• Room air temperature reading and adjustment
• Room humidity reading and adjustment
• Water temperature reading (water sensor as an optional)
• Manual/automatic regulation of the fan speed with ON -OFF step and modulating control
• Automatic adjustment of valve opening with ON/OFF and modulating controller
• Manual and automatic switching of heating and cooling mode depending on the water temperature within the heat exchanger or on the room temperature,
with a selectable neutral zone
• Clock and hourly timer-programmed operation
• 3 Analogue outputs for controlling modulating devices -10V
• Economy function and minimum temperature
• 1 Digital outputs for controlling (On/Off) external devices (novoltage contacts)
• Serial port for RS485 connection
• Serial port for OC connection
• 3 digital inputs for ON-OFF, Economy, Operating mode remote setting
Operating mode
The controller is provided with a programmable display that allows you to view and set the hydronic unit functions by means of the specific interface with parameter
description.
FWTSKA - water temperature sensor for microprocessor controls model FWECS, FWEC3A
Directly connected to the microprocessor controllers FWECS and FWEC3A to measure the water temperature through the heat exchanger.
If the temperature registered is lower than 17 °C the unit works in cooling mode and the temperature range of the control panel will be referred to the cooling mode
(19/31 °C); if the temperature registered is higher than 37 °C the unit works in heating mode and the temperature range of the control panel will be referred to the
heating mode (14/26 °C). If the temperature registered is between 17 °C e 37 °C the control panel will disable the unit operation.
FWHSKA - Humidity sensor for FWECS, FWEC3A microprocessor controller
Directly connected to the microprocessor controllers FWECS and FWEC3A , it enables the control of the heating element ventilation (if present, as support in heating
mode) and the automatic cooling/heating changeover according to the water temperature.
3 way motor driven valve with Hydraulic kit ON-OFF
It controls the room temperature by stopping the water flow through the heat exchanger.The kit, available for all models with standard heat exchanger or additional
heat exchanger, comprises the following components:Valve body: 3-way with incorporated by-pass (4 connections), 230V single-phase electro-thermal normally
closed ON/OFF servo control, it acts directly on the valve shutter. Hydraulic plumbing kit made with copper piping and brass connectors.
3-way motor-driven modulating valve complete with hydraulic kit
It controls the room temperature by stopping the water flow through the heat exchanger.The kit, available for all models with standard heat exchanger or additional
heat exchanger, comprises the following components:Valve body: 3-way with incorporated by-pass (4 connections), 24V electro-thermal normally closed modu-
lating servo control. It acts directly on the valve shutter. Hydraulic plumbing kit made with copper piping and brass connectors.
2-way motor-driven ON/OFF valve complete with hydraulic kit
It controls the room temperature by stopping the water flow through the heat exchanger. With 230V electro-thermal actuator. Available for all models, with
standard heat exchanger or additional heat exchanger.
2-way motor-driven modulating valve complete with hydraulic kit
It controls the room temperature by stopping the water flow through the heat exchanger.With 24V electro-thermal actuator. Available for all models, with standard
heat exchanger or additional heat exchanger.

FWPC
TECHNICAL MANUAL18
2-way motor-driven modulating valve pressure independent complete with hydraulic kit
It controls the room temperature by stopping the water flow through the heat exchanger.With 24V electro-thermal actuator. Available for all models, with standard
heat exchanger or additional heat exchanger.
EDPD - Auxiliary trays for collecting condensate
Used for collecting any condensate that might form on the adjusting valves, the hydraulic unions and the holdfasts during the cooling operating mode.
The trays are made of galvanized metal sheet, with condensate discharge pipe (Ø 17 mm) setup for being connected to a flexible rubber tube, like that which has
been envisaged for the condensate discharge trays of the basic unit.They are available for: FWP-C units installed horizontally,.
EH - additional electric heating element
Useful as heating integration to the hot water system, the EH kit is made of an electric heater with safety thermostat (automatic and manual resetting) and power
relay.
The additional heating element should be coupled to the control panel. FWEC3A (the coupling to other controls is not allowed).
CDRP1A - Condensate drainage pump
This device allows to overcome displacements in the condensate drain.The pump can drain water up to 8 l/h and it is completed by a non return valve on the
discharge side.
EPIMSB6 - Power interface for connecting in parallel up to 4 fan coil units to the one controller
The master slave can be installed to control with a single control panel up to 4 fan coils (connected in parallel).This accessory is designed for installation on a DIN
drive, usually placed on electric board, can be matched with all versions.

UT66002766-02
All copying, even partial, of this manual is strictly forbidden 19
12 MAINTENANCE
For safety reasons, before carrying out any maintenance or
cleaning jobs, turn o the unit by moving the fan speed se-
lector to “O” and putting o the main switch (0 position).
DANGER! Due caution must be taken while carrying out
maintenance: some metal parts may cause injuries; wear
protective gloves.
The maintenance requirements of FWP-C ducted units are lim-
ited to periodic cleaning of the air lter and heat exchanger and
checks on the eciency of condensate drainage.
Maintenance may be performed only by specialised
personnel.
Whenever starting up the unit after it has not been used for a
long time, check that there is no air in the heat exchanger.
The motor requires no maintenance since it has self-lubricating
bearings.
12.1 CLEANING THE AIR FILTER
Disconnect the unit from the power supply by setting the main
switch on 0 (OFF).
To clean the air lter proceed as follows:
1. Access the unit via the inspection panel and take out the air
lter as shown in (Air lter ):
2. If the lter is on the inside of the intake grille, remove the lat-
ter and then proceed to carry out the steps described below.
3. Clean the lter with warm water or, in the event of dry dust
build-up, using compressed air.
4. Allow the lter to dry and then t it back in place.
» Air filter
12.2 CLEANING THE HEAT EXCHANGER
It It is advisable to check the condition of the exchanger before
the start of every summer season to make sure that the ns are
not obstructed by dirt.
To access the heat exchanger, remove the outlet panel (whether
of the type with collars or a rectangular ange) and the drip tray.
On reaching the exchanger, clean it with compressed air or
low-pressure steam taking care not to damage the ns.
Before the start of every summer season, check the eciency of
condensate drainage.
Adequate periodic maintenance will ensure save both ener-
gy and cost savings.

FWPC
TECHNICAL MANUAL20
» Standard air intake