Daikin FWT02CATNMV1 Installation Manual

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INSTALLATION
MANUAL

IM-WMJW-0312(0)-DAIKIN (DENV)

Part No.: R08019037507

MODELS
FWT02CATNMV1
FWT03CATNMV1
FWT04CATNMV1
FWT05CATNMV1
FWT06CATNMV1

Installation Manual

Chilled Water Fan Coil Units

Installationshandbuch

Kaltwasser-Ventilator Luftkühler

Manuel d’installation

Ventilo-convecteur à eau glacée

Installatiehandboek

Koud Water-Ventilator Luchtkoeler

Manual de instalación

Unidades de serpentín de ventilador de agua fría

Manuale Di Installazione

Unità fan coil ad acqua fredda

Εγχειρίδιο εγκατάστασης

Μονάδες πηνίου του ανεμιστήρα για το παγωμένó νερο

Manual De Instalação

Unidades de bobina de ventilador de água refrigerante

Руководство По Установке

ВентилЯторные доводчики с водЯным охлаждением

Kurulum Kılavuzu

So¤uk su fan bobin üniteleri

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English

Original Instruction

Recommended mounting plate retention spots

(5 spots in all)

Use tape measure as shown.
Position the end of a tape
measure at

Indoor Unit

FRONT VIEW

TOP VIEW

SIDE VIEW

THE MARK

SHOWS PIPING DIRECTION

REAR

RIGHT

LEFT

BOTTOM

FRONT GRILLE FIXED SCREWS
(INSIDE)

LOUVER

SIGNAL RECEIVER

INDOOR UNIT
ON/OFF SWITCH
ROOM TEMPERATURE
THERMISTOR (INSIDE)

NAME PLATE

TERMINAL
BLOCK
WITH EARTH
TERMINAL

Water outlet

INSTALLATION PLATE FWT02/03/04

Water inlet

Through the wall
hole Ø 65mm

All dimensions are in mm

Drain hose position

OUTLINE AND DIMENSIONS

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Through the wall
hole Ø 65mm

Drain hose position

Water inlet

Water outlet

INSTALLATION PLATE FWT05/06

All dimensions are in mm

Dimension

Model

FWT02/03/04

800

288

206

166

184

154

182

267

FWT05/06

1065

310

224

190

173

219

593

Recommended mounting plate retention
spots (7 spots in all)

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English

INSTALLATION MANUAL

This manual provides the procedures of installation to ensure a safe and good standard of operation for the air conditioner unit.
Special adjustment may be necessary to suit local requirements.
Before using your air conditioner, please read this instruction manual carefully and keep it for future reference. This appliance is
intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by lay persons.
This appliance is not intended for use by persons, including children, with reduced physical, sensory or mental capabilities, or
lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.

SAFETY PRECAUTIONS

WARNING

CAUTION

Installation and maintenance should be performed by qualified
persons who are familiar with local code and regulation, and
experienced with this type of appliance.
All field wiring must be installed in accordance with the
national wiring regulation.
Ensure that the rated voltage of the unit corresponds to that
of the name plate before commencing wiring work according
to the wiring diagram.
The unit must be GROUNDED to prevent possible hazard
due to insulation failure.
All electrical wiring must not touch the refrigerant piping, or
any moving parts of the fan motors.
Confirm that the unit has been switched OFF before installing
or servicing the unit.
Disconnect from the main power supply before servicing the
air conditioner unit.
DO NOT pull out the power cord when the power is ON.
This may cause serious electrical shocks which may result
in fire hazards.
Keep the indoor and outdoor units, power cable and
transmission wiring, at least 1m from TVs and radios, to
prevent distorted pictures and static. {Depending on the type
and source of the electrical waves, static may be heard even
when more than 1m away}.

•

Please take note of the following important points when
installing.

Ensure that the drainage piping is connected properly.

If the drainage piping is not connected properly, it
may cause water leakage which will dampen the
furniture.

Ensure that the unit’s panel is closed after service or
installation.

Unsecured panels will cause the unit to operate
noisily.

Sharp edges and coil surfaces are potential locations which
may cause injury hazards.
Avoid from being in contact with these places.
Before turning off the power supply, set the remote
controller’s ON/OFF switch to the “OFF” position to
prevent the nuisance tripping of the unit.

If this is not done,

the unit’s fans will start turning automatically when power
resumes, posing a hazard to service personnel or the user.

Do not install the units at or near doorway.
Do not operate any heating apparatus too close to the
air conditioner unit or use in room where mineral oil, oil
vapour or oil steam exist, this may cause plastic part to
melt or deform as a result of excessive heat or chemical
reaction.
When the unit is used in kitchen, keep flour away from
going into suction of the unit.
This unit is not suitable for factory used where cutting oil
mist or iron powder exist or voltage fluctuates greatly.
Do not install the units at area like hot spring or oil refinery
plant where sulphide gas exists.
Ensure the color of wires of the outdoor unit and the
terminal markings are same to the indoors respectively.
IMPORTANT : DO NOT INSTALL OR USE THE AIR
CONDITIONER UNIT IN A LAUNDRY ROOM.
Don't use joined and twisted wires for incoming power
supply.
The equipment is not intended for use in a potentially
explosive atmosphere.

•

•
•

•

NOTICE

Disposal requirement

Your air conditioning product is marked with this symbol. This means that electrical and electronic products shall not be
mixed with unsorted household waste.
Do not try to dismantle the system yourself: the dismantling of the air conditioning system, treatment of the refrigerant, of
oil and of other parts must be done by a qualified installer in accordance with relevant local and national legislation.
Air conditioners must be treated at a specialized treatment facility for re-use, recycling and recovery. By ensuring this product
is disposed of correctly, you will help to prevent potential negative consequences for the environment and human health.
Please contact the installer or local authority for more information.
Batteries must be removed from the remote controller and disposed of separately in accordance with relevant local and
national legislation.

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INSTALLATION DIAGRAM

INSULATION THROUGH OUT CHILLED WATER PIPING

CORK TAPE FULLY INSULATED

INSTALLATION OF THE INDOOR UNIT

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.

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.

min. 50
(Space for
maintenance)

Air

(Indoor)

min. 50
(Space for
maintenance)

min. 30

(Space for

performance)

Required space

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

CAUTION

Do not install the unit at altitude over 2000m.

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.

CAUTION

Ensure there is no water droplets go into the control box

during purging process.

All dimensions are in mm

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English

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 fix it with
5 suitable screws for FWT02/03/04 and 7 suitable screws for
FWT05/06.
In case the rear piping draws out, drill a hole 65mm in
diameter with a cone drill, slightly lower on the outside wall
(see figure).

Inside

Caulking

Outside

Wall embedded pipe
(Field supply)

Wall hole cover
(Field supply)

Wall embedded pipe
(Field supply)

Ø 65

Hole with cone drill

Mounting plate

xing screw

FWT02/03/04

Mount The Unit Onto The Installation Plate

Hook the indoor unit onto the upper portion of the installation
plate (Engage the two hooks at the rear top of the indoor unit
with the upper edge of the installation plate). Ensure that the
hooks are properly seated on the installation plate by moving
it to the left and right.

How To Attach The Indoor Unit

Hook the claws of the bottom frame to the mounting plate.

How To Remove The Indoor Unit

Push up the marked area (at the lower part of the front grille)
to release the claws.

Mounting plate

Clip

Mark (rear side)

Bottom frame

Front grille

Mounting plate

Mounting plate
fixing screw

FWT05/06

Recommended Mounting Plate Retention Spots And
Dimensions

Mounting plate

Interconnecting
wires

Hang indoor unit’s hook here.

Wire guide

When stripping the
ends of interconnecting
wires in advance, bind
right ends of wires with
insulating tape.

Drain hose

position

Recommended mounting
plate retention spots
(5 spots in all)

Use tape measure as shown.
Position the end of a tape
measure at

Water outlet

Water inlet

166

184

181.7

55.5

54.5

153.8

263

51.9

800

45.9

42.2

288

42.2

45.9

All dimensions are in mm

FWT02/03/04

Through the

wall hole

Ø 65mm

Water Drainage Piping

The indoor drain pipe must be in a downward gradient for
smooth drainage. Avoid situations that are likely to cause
water to leak.

End dipped
into water

Water

leaking

Water

leaking

Water

leaking

Wrong

Drain

Water Drainage

Water
Retention

Correct

Recommended mounting plate
retention spots (7 spots in all)

190

173

310

Water outlet

Water inlet

580

1065

219

FWT05/06

All dimensions are in mm

Drain hose

position

Through the
wall hole
Ø 65mm

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VALVE N1

3 way valve
Relay (220-240V, 10A)

Chiller

Water Piping Connection

The indoor unit is equipped with water outlet and inlet threaded connection. There is an air-vent for air purging that is

tted at

the outlet water header.
3 ways valve is required for cycling off or bypass the chilled water.
Black steel pipe, polyuthrene pipe, PVC pipe and copper tube are recommended in

eld installation.

All types of piping and connection must be insulated by polyurethane (ARMAFLEX type or equivalent) to avoid condensation.
Do not use contaminated or damaged pipe and

tting for installation.

Some main

tting components are needed in the system to enhance the capacity and ease of service, such as gate valve, balancing

valve, 2 ways or 3 ways valve,

lter, strainer, etc.

Gate Valve

Three Way Valve

Gate Valve

Two Way Valve

Gate Valve

Chiller

Gate Valve

Good Controlling

Bad Controlling

Gate Valve

FCU

Worst Controlling

Gate Valve

ELECTRICAL WIRING CONNECTION

Model

FWT02/03/04/05/06

Voltage range**

220V – 240V/1Ph/50Hz +

Power supply cable size*

Number of conductors

1.5

Recommended time delay fuse

All wires must be

rmly connected.

All wires must not touch the water piping, or any moving
parts of the fan motor.
The connecting wires to the indoor unit must be clamped
on the wire clamps as shown in the

gure.

The power supply cord must be equivalent to H07RN-F
which is the minimum requirement, and to be used in
protective tube.

•
•

•

Wire Clamp

Interconnection

Cable

IMPORTANT :

These values are for information only, they should be checked and selected to comply with the local and/or
national codes and regulations. They are also subjected to the type of installation and size of conductors.

** The appropriate voltage range should be checked with data label on the unit.

There must be an all pole disconnection in the supply mains with a contact separation of at least 3mm.

Power Supply Cable

FWT02/03/04/05/06

FCU3

3wv

FCU2

3wv

FCU1

3wv

N
T
S
R

x1x2x3

3WV

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English

IR Signal Receiver

When an infrared remote control operating signal has been
transmitted, the signal receiver on the indoor unit will respond
as below to con

rm acceptance of the signal transmission.

LED Indicator Lights for Cooling Unit/Heat Pump Unit

IR Receiver

Cooling Unit/Heat Pump Unit

The table shows the LED indicator lights for the air conditioner
unit under normal operation and fault conditions.
The LED indicator lights are located at the right bottom of
the air conditioner unit.

ON/OFF

Cool/Heat
Timer
Sleep

ON/OFF switch

IR Receiver

INDICATOR LIGHTS

ON to OFF

1 Long Beep

OFF to ON
Pump down/Cool force on

2 Short Beep

Others

1 Short Beep

LED Indicator Lights: Normal Operation And Fault Conditions For Cooling/Heat Pump Unit

COOL/HEAT

(GREEN/RED)

Normal Operation/Fault Indication

Action

Error Code

Green

Cool mode

Red

Heat mode

Timer on

Sleep mode on

Fan mode on

Dry mode on

1 time

Room air sensor contact
Loose/Short

Call your dealer

Blink E1

2 times

Indoor coil sensor open/short

Call your dealer

Blink E2

3 times

Pipe water temperature poor

Blink E4

1 time

Pipe water temperature bad

Blink E5

6 times

Hardware error (tact switch pin short)

Call your dealer

Blink E8

4 times

No feedback from indoor fan

Call your dealer

Blink E9

ON or OFF

Blinking

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Dry Mode

When the air humidity is high, the unit can operate in dry
mode. Press <MODE> button and choose <DRY>.
If the room temperature is 2°C/3.6°F higher than the
set temperature, the air conditioner will operate under
cooling mode until it reaches within the 2°C/3.6°F range
of difference compared to the set temperature before it
converts to dry mode.
If the room temperature is within the 2°C/3.6°F range of
difference compared to the set temperature, it will directly
operate under dry mode.
The unit will operate at LOW speed under dry mode.

Heat Mode (for heat pump unit only)

When the unit at cold draft setting, the indoor fan will
start to operate only after the coil reaches the desired
temperature.
For fan mode setting, indoor fan will continuous running
once unit ON.
When the set temperature is achieved, the indoor fan will
operate until the coil cannot provide anymore additional
heat.

Air Flow Control

For more effective air circulation, you can manually adjust
the air discharge grille to the left or right.
During cool mode operation and dry mode operation, do
not direct the air discharge louver downwards for too long.
If operating continues in this way, condensation may occur
on the louver, thus resulting in drippings.

Fan Speed And Rated Cooling Capacity

The rated cooling capacity is provided at the HIGH fan
speed.
The cooling capacity is lower when the unit is operating at
MEDIUM and LOW fan speed.

•

Notes On Flaps And Louvers Angles

When “

SWING button

” is selected, the

aps swinging

range depends on the operation mode. (See the

gure.)

ATTENTION

Always use a remote controller to adjust the

aps angle.

If you attempt to move it forcibly with hand when it is
swinging, the mechanism may be broken.
Be careful when adjusting the louvers. Inside the air outlet,
a fan is rotating at a high speed.

•

In COOL, DRY and FAN mode

When stop operation

Upper limit 55

Lower limit 75

AIR CONDITIONER UNIT OPERATION

In HEAT mode

When stop operation

Upper limit 70

Lower limit 110

OPERATING RANGE

Operating Limits:

Thermal carrier : Water
Water temperature : 4-10°C Cooling; 35-50°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

Ts: Dry bulb temperature. Th: Wet bulb temperature.

Temperature

Ts °C/°F

Th °C/°F

Minimum indoor
temperature

15.0 / 59.0

Maximum indoor

temperature

27.0 / 80.6

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English

1. Open the front panel.

• Hold the panel at the recesses on the main unit

(2 recesses on right and left sides) and lift it until it
stops.

3. Clean or replace each

lter.

• When shaking off remaining water, do not wring the

lter.

4. Set the air

lter as they were and close the front

panel.

• Insert claws of the

lters into slots of the front panel.

Close the front panel slowly and push the panel at the
3 points. (1 on each side and 1 in the middle.)

• The

air

lter have a symmetrical form in the horizontal

direction.

2. Pull out the air

lters.

• Push a little upwards the tab at the center of each air

lter, then pull it down.

Recess on
main unit

AIR FILTER

SERVICE AND MAINTENANCE

Service Parts

Maintenance Procedures

Indoor air

lter

Remove any dust adhering to the

lter by using a vacuum cleaner or wash in lukewarm

water (below 40°C/104°F) with a neutral cleaning detergent.
Rinse the

lter well and dry before placing it back onto the unit.

Do not use gasoline, volatile substances or chemicals to clean the

lter.

2.
3.

Indoor unit

Clean any dirt or dust on the grille or panel by wiping it with a soft cloth soaked in
lukewarm water (below 40°C/104°F) and a neutral detergent solution.
Do not use gasoline, volatile substances or chemicals to clean the indoor unit.

FRONT

Rotating

shaft

Recess on

main unit

CAUTION

•  Don’t touch the metal parts of the indoor unit. It may cause an injury.
•  When removing or attaching the front panel, support the panel securely with hand to prevent it from falling.
•  For cleansing, do not use hot water above 40°C, benzine, gasoline, thinner, nor other volatile oils, polishing

compound, scrubbing brushes, nor other hand stuff.

• After cleaning, make sure that the front panel is securely

xed.

1. Open the front panel.

• Hold the panel at the recesses on the main unit (2 recesses

on right and left sides) and lift it until it stops.

2. Remove the front panel.

• While lifting the front panel further, slide it to the right

and pull it to the front side. The left rotating shaft is
detached. Slide the right rotating shaft to the left and
pull it to the front side to remove it.

3. Attach the front panel.

• Align the right and left rotating shafts of the front panel

with the grooves and push them all the way in.

• Gently close the front panel. (Push both ends and the

center on the front panel.)

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When The Unit Is Not To Be Used For An Extended Long Period Of Time

For any enquiries on spare part please contact your authorized dealer. When any malfunction of the air conditioner
unit is noted, immediately switch off the power supply to the unit. Check the following fault conditions and causes for
some simple troubleshooting tips.

If the fault persists, please call your local dealer / serviceman.

TROUBLESHOOTING

Fault

Causes / Action

The air conditioner unit does not operate.

Power failure, or the fuse needs to be replaced.
The power plug is disconnected.
It is possible that your delay timer has been set
incorrectly.
If the fault persist after all these veri

cations, please

contact the air conditioner unit installer.

–
–
–

–

The air

ow is too low.

The air

lter is dirty.

The doors or windows are open.
The air suction and discharge are clogged.
The regulated temperature is not high enough.

–
–
–
–

Discharge air

ow has bad odour.

Odours may be caused by cigarettes, smoke particles,
perfume etc. which might have adhered onto the coil.

–

Condensation on the front air grille of the indoor unit.

This is caused by air humidity after an extended long period
of operation.
The set temperature is too low, increase the temperature
setting and operate the unit at high fan speed.

–

Water

owing out from the air conditioner unit.

Switch off unit and call dealer.

–

Operate the unit for 2 hours with
the following setting.

Operating mode : cool
Temperature : 30°C/86°F

Remove the power plug.
If you are using an
independent electric
circuit for your unit, cut
off the circuit.
Remove the batteries in
the remote control.

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