Acson international AWM10FW User manual

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English
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 yourair conditioner, please read this instruction manual carefully and keep it forfuture reference.
INSTALLATIONMANUAL
WALLMOUNTED CHILLED WATER FAN COIL UNIT
MODEL
COOLING UNIT
Reference Model
WM10FW
WM15FW
WM20FW
WM25FW
Part No.:A08019013031
Model
AWM10FW / MWM010FW / YWM10FW
AWM15FW / MWM015FW / YWM15FW
AWM20FW / MWM020FW / YWM20FW
AWM25FW / MWM025FW / YWM25FW
IM-WMFW-0501

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CONTENTS
Before installing the air conditioner unit, please read the following safety precautions carefully.
SAFETY PRECAUTIONS
!Warning
• 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 hazards due to insulation failure.
• All electrical wiring must not touch the water piping or any moving parts of the fan motors.
• Confirm that the unit has been switched OFF before installing or servicing the unit.
IMPORTANT
DO NOT INSTALL OR USE THEAIR CONDITIONER UNIT IN A LAUNDRY ROOM.
- Outline And Dimensions page i-ii
- Safety Precautions page 2
- Installation Diagram page 3
- Installation Of Indoor Unit page 3
- Electrical Wiring Connection page 4
- Indicator Lights page 5
- Air Conditioner Unit Operation page 6
- Standard Operating Conditions page 6
- Optional : Electrostatic Filter page 7
- Service And Maintenance page 8
- Trouble Shooting page 8
!Caution
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 units panel is closed after service or installation.
Unsecured panels will cause the unit to operate noisily.

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English
INSTALLATION DIAGRAM
Air Intake Grille
Air Discharge Grille
Chiller
Water Piping
Drain Hose
Front Frame
Back Housing
On/Off Switch
Air Filters
Indicator
Lights
Signal
Receiver
Air Discharge Louver
Outdoor Unit
Indoor Unit
INSTALLATION OF THE INDOOR UNIT
Plate Mounting Installation
Maintenance &
Servicing Space
Air Flow
Direction
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 figure. 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.
Higher Than
Eye Level
Hole With Cone Drill
Indoor Side Outdoor Side
Screw Position
In The Wall
Ø 65.0 mm Hole
In The Wall
Mounting Installation Plate
Ensurethat thewall is strongenough to withstandthe 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
4 suitable screws.
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).
Water Drainage
Wrong Wrong WrongCorrect
Drain
End
Dipped
Into
Water
Water
Leaking
Water
Leaking Water
Leaking
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.
1. Hook the unit onto the installation plate.
2. A unit support plate can be used
to hold the unit in a slanted
position (See figure) to ease
piping installation work.
3. Fix the screw underneath
after completing
installation.
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.

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ELECTRICALWIRING CONNECTION
• All wires must be firmly connected.
• All wires must not touch the water piping, or any
moving parts of the fan motor.
• The connecting wires between the indoor unit and the
outdoor unit must be clamped on the wire clamps
as shown in the figure.
• The power supply cord must be equivalent to H05RN-F
(245IEC57) which is the minimum requirement.
Cooling unit
IMPORTANT : The figures shown in the table are for information purpose only. They should be checked and selected
tocomply with the local/national codes of regulations. This is also subject to the type of installa-
tion and conductors used.
Wire Clamp
Interconnection
cable
Power Supply
Cable
WM 10 FW ~ 25 FW
Model 07 / 10 / 15 20 / 25
Voltage range 220V – 240V
1Ph / 50Hz +
Power supply cable size mm21.5 2.5
Number of wire 33
Interconnection Cable size mm21.5 2.5
Number of wire 33
Recommended Fuse A 15 20

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English
Water Piping Connection
The indoor unit is equipped with water outlet and inlet bare connection. There is an air-vent for air purging that is fitted at the
outlet water header.
3 ways solenoid valve is required for cycling off or bypass the chilled water.
Black steel pipe, polyethrene pipe, PVC pipe and copper tube are recommended in field 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 fitting for installation.
Some main fitting 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 solenoid valve, filter, strainer etc.
IR Signal Receiver
When an infrared remote control operating signal has
been transmitted, the signal receiver on the indoor unit
will make a <beep> sound to confirm acceptance of the
signal transmission.
Cooling Unit
The table shows the LED indicator lights for the air condi-
tioner unit under normal operation and fault conditions.
The LED indicator lights are located at the bottom right
side of the air conditioner unit.
Heat Pump Unit
The table shows the LED indicator lights for the air condi-
tioner unit under normal operation and fault conditions.
The LED indicator lights are located at the bottom right
side of the air conditioner unit.
INDICATOR LIGHTS
LED Indicator Lights
IR Receiver
LED Indicator Lights For Cooling Unit
Cool mode
Fan mode
Dry mode
Sleep mode
LED Indicator Lights For Heat Pump Unit
Cooling mode Dry mode
Sleep mode
Heat / Fan mode
(red / green)

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LED Indicator Lights : Normal OperationAnd Fault Conditions For Cooling Unit
Operation / Fault Indication Action
Cool mode –
Heat mode –
Fan mode –
Dry mode –
Room sensor missing –
Pipe sensor missing –
ON or OFFON Blinking
Cool Dry Sleep Heat Fan
Horizontal
Cooling
Dry
AIR CONDITIONER UNIT OPERATION
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 higher than the set
temperature, the air conditioner will operate under
cooling mode until it reaches within the 2°C range of
difference compared to the set temperature before it
converts to dry mode.
• If the room temperature is within the 2°C 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.
Fan Speed And Rated Cooling Capacity
• The rated cooling capacity is provided at the maximum
fan speed.
• The cooling capacity is lower when the unit is operating
at MEDIUM and LOW fan speed.
STANDARD OPERATING CONDITIONS
Cooling Unit
Temperature Ts ºC Th °C
Minimum indoor 19.4 13.9
temperature
Maximum indoor 26.7 19.4
temperature
Minimum outdoor 19.4 13.9
temperature
Maximum outdoor 46 24
temperature Ts: Dry bulb temperature.
Th: Wet bulb temperature.
Horizontal 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.
* Dry mode = Cool mode at low fan

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English
Dual Action ElectrostaticAir Purifying And
Deodorizing Filter MediaAnd Filter Frame
Action 1-
ElectrostaticAir Purifying Filter
Removes microscopic dust, smoke and small invisible
particles to keep the room air clean with pre-charged
electrostatic polypropylene filter.
Action 2-
Deodorizing Filter
Removes unwanted smells and odors in the air and keeps
the room air fresh with activated carbon filter.
OPTIONAL : ELECTROSTATIC FILTER
How To Install
Step 1 B) To insert the dual action filter
Ionizer Filter Bottom
Pull Upwards To Open
Push This Part
Insert Top First
C) To Close The Filter Frame
Electrostatic Air
Purifying Filter
(White Colour)
Deodorizing
(Black Colour)
Place Filter Into
The Filter Frame
Ionizer Filter Top
Press Downward
To Lock
A) To Open The Filter Frame
!Caution
1. The electrostatic air purifying and deodorizing filter
should be replaced once every 6 months or when the
filter changes color to brownish, whichever is sooner.
2. Used dusty filters should be disposed and shouldn't
be reused, even if it has been cleaned and washed.
3. The filter is a consumable part which you can purchase
from your air conditioner dealer.
4. Use the new filter immediately once it has been taken
out from its sealed packing. Do not unpack the new
filter too early before it is actually used as this may
decrease its deodorizing effect.
Slide Out The
Original Filters
Open The
Front Frame
Grille
Insert The Dual Action
Electrostatic And
Deodorizing Filters Into
The Slot
Slide Back The
Original Filter
Step 2

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SERVICE AND MAINTENANCE
Maintenance Procedures
1. Remove any dust adhering to the filter by using a vacuum cleaner or
wash in lukewarm water (below 40°C) with a neutral cleaning detergent.
2. Rinse the filter well and dry before placing it back onto the unit.
3. Do not use gasoline, volatile substances or chemicals to clean the filter.
1. Clean any dirt or dust on the grille or panel by wiping it with a soft
cloth soaked in lukewarm water (below 40°C) and a neutral detergent
solution.
2. Do not use gasoline, volatile substances or chemicals to clean the
indoor unit.
Period
At least once
every 2 weeks.
More frequently if
necessary.
At least once
every 2 weeks.
More frequently if
necessary.
Service Parts
Indoor air filter
Indoor unit
When The Unit Is Not To Be Used ForAn Extended Long Period Of Time
Operate the unit for 2 hours
with the following setting.
Operating mode : cool
Temperature : 30°C
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.
If 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 trouble shooting tips.
TROUBLE SHOOTING
Causes / Action
– Power failure, or the fuse needs to be replaced.
– The power plug is disconnected.
– If the fault persist after all these verifications, please contact the air
conditioner unit installer.
– The air filter is dirty.
– The doors or windows are open.
– The air suction and discharge are clogged.
– The regulated temperature is not high enough.
– Odors may be caused by cigarettes, smoke particles, perfume etc.
which might have adhered onto the coil.
– 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.
– Switch off unit and call dealer.
Fault
1. The air conditioner unit does not operate.
2. The air flow is too low.
3. Discharge air flow has bad odor.
4. Condensation on the front air grille of the indoor unit.
5. Water flowing out from the air conditioner unit.
If the fault persists, please call your local dealer / serviceman.
!Warning
• 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.
! Caution
Do not operate any heating apparatus too close to the air conditioner unit. This may
cause the plastic panel to melt or deform as a result of the excessive heat.