Acson international AWSS30A User manual

Technical Manual
WATER
COOLED
SINGLE SPLIT
AWSS30A AWSS40A
AWSS50A AWSS60A

1. NOMENCLATURE..........................................................................................................1
- PRODUCT LINE-UP
2. FEATURES ..................................................................................................................11
3 . APPLICATION INFORMATION ................................................................................... 12
- OPERATING RANGE
- REFRIGERANT CIRCUIT DIAGRAMS
- CONTROLLERS
- PRECAUTION AND INSTALLATION
4. SOUND DATA.............................................................................................................. 32
5. SELECTION PROCESS...........................................................................................51
- FAN PERFORMANCE CHART
6. ENGINEERING & PHYSICAL DATA .......................................................................... 59
- GENERAL DATA
- COMPONENTS DATA
- SAFETY DEVICES
7. PERFORMANCE DATA............................................................................................... 86
- PERFORMANCE TABLE
8. OUTLINE AND DIMENSION ....................................................................................... 94
9. ELECTRICAL DATA................................................................................................... 100
10. WIRING DIAGRAMS ................................................................................................. 105
11. SERVICING AND MAINTENANCE ............................................................................117
12. TROUBLESHOOTING ...............................................................................................118
13. EXPLODED VIEW & PART LIST................................................................................119
TABLE OF CONTENTS

1
Outdoor
AAFA
-
Series
A : A Series
Capacity
10 : 10,000 Btu/h
Model Name
WSS : Water Source Single Split
Brand
A : Acson
Electrical Characteristic
F : Flare Connection
Type of Connection
Product Specification Variation
A : 220 – 240V/1Ph/50Hz
F : 380 – 415V/3Ph/50Hz
WSS10A
A
1. NOMENCLATURE

2
Indoor
DCFA
-
Series
C : C Series
Capacity
10 : 10,000 Btu/h
Model Name
CC: Ceiling Concealed
Brand
A : Acson
Electrical Characteristic
F : Flare Connection
Type of Connection
Product Specification Variation
A : 220 – 240V/1Ph/50Hz
CC 10 C
A

3
B BFA
-
Series
A : A Series
C : C Series
Capacity
10 : 10,000 Btu/h
Model Name
CK: Ceiling Cassette
Brand
A : Acson
Electrical Characteristic
F : Flare Connection
Type of Connection
Product Specification Variation
A : 220 – 240V/1Ph/50Hz
CK 10 A
A

4
C EICA
-
Series
G2: G+ Series
Capacity
10 : 10,000 Btu/h
Model Name
WM: Wall Mounted
Brand
A : Acson
Electrical Characteristic
A : 220-240V/1Ph/50Hz
Market Region
I : Negative Ion with wireless controller
N: NTP with wireless controller
X: Oxygen unit
Air Devices Treatment & Control
Grille
C: Grille C
B: Grille B
A: Grille A
Others
E: Fifth Generation
C : Export with CE marking
WM 10 G2
A

5
CM 20 E
A
Series
E : E series
Capacity
20 : 20,000 Btu/h
Model Name
CM : Ceiling Convertible
Brand
A : Acson
Electrical
A : 220-240V/1Ph/50Hz
Market Region
C : Export with CE mark
Controller Specifications
Other Specifications
I : Ionizer Generator
N : Non Thermal Plasma
A : First Issue
-IAGCA
G : Wireless Handset
S : SLM3
N : Netware III

6
Product Line-Up
Outdoor unit
AWSS (R22)
REMARK
W/out Contactor & Relay
With Contactor & Relay
Without Marking CE Mark Cap. Tube TXV
Rotary
Scroll Single Double Isolation
30A AFAA X X X X 2JS438D3BA02
40A FFAA X X XX X ZR45KCTFD522
50A FFAA X X XX X ZR54KSTFD
60A FFAA X X XX X ZR68KCTFD
CLASSIFICATION
Refrigerant Control Base Pan
NOMENCALTURE
Control Marking
AWSS
Cooling Only
Phase Sequencer
Compressor Model
Compressor

7
Indoor Unit
ACC-C Series (R22)
Control
L2 08A SLM3 NETWARE 3 CE Mark W/out Marking ETL Cap. Tube W/out Cap. Tube Air Filter W/out Air Filter Metal Drain Pan EPS Drain Pan
AFBC X X X X X X
AFCD X X X X X X
AFLB X X X X X X X
AFBC X X X X X X
AFCD X X X X X X
AFLB X X X X X X X
AFBC X X X X X X
AFCD X X X X X X
AFLB X X X X X X X
AFBC X X X X X X
AFCD X X X X X X
AFLB X X X X X X X
60C
Cooling Model
CLASSIFICATION
ACC
Built-in Filter Rail
Drain Pan
Low Static Model
FilterHandset
Refrigerant Control
NONMENCLATURE
40C
50C
Marking
30C

8
ACK-A Series Product Line Up (R22)
Control
L2 08A CE Mark ETL
Alum. (Slit)
Hydrophilic (Slit) Cap. Tube W/out Cap. Tube
30A AFBB X X X X X
40A AFBB X X X X X
50A AFBB X X X X X
Cooling
Only
Classification
Marking Refrigerant Control
Fin
Auto Air Swing
NOMENCALTURE
ACK

11
Acson Water Source Single Split (AWSS) system is one of the most efcient and high performance systems that
can move energy in a building from where it is not needed to where it is needed. It is perfect for buildings that
required heating and cooling operation at different zones. With this, different areas or zones can be heated or
cooled at different temperature simultaneously. The heat is rejected and added in a water loop using a cooling
tower and a boiler. The units are easy to install, operate and maintain.
Energy Saving
AWSS is the most efcient system available for heating and cooling. It will be very cost effective for seasonal
operation and can provide greater indoor comfort to the occupants. With the lower power consumption, the
operation and maintenance cost is very much lower than the conventional air-conditioning systems.
Easy Installation and Improve Aesthetics
The unit has a great exibility for installation. With a compact design and a low height prole, it can easily t the
required space layout and allow maximum use of space. The units are concealed from the occupant views as
the units are installed above the ceiling and are sheltered inside the building. The units are painted as well. It will
improve the aesthetics value of a particular building and eliminates the probability of vandalism and injury.
Quiet Operation
AWSS is developed with double isolation panel (Upper and Lower Panel). Such design has promised the
extremely low vibration on the unit itself. Moreover, the heavy gauge cabinet construction together with vibration
isolated hanger brackets also minimizes noise and vibration effectively.
Easy Servicing and Maintenance
The two side removable service panels provide easy access to the compressor as well as the heat
exchanger.
Fluid-to-Refrigerant Coil
The tube-in-tube coaxial heat exchanger applied in AWSS unit is designed for maximum heat transfer at normal
and low water ow rate with minimum pressure drop. The inside refrigerant tube is deeply uted to enhance
heat transfer and minimize fouling. This coaxial heat exchanger is tested perfectly to 1600 psig on the water
side and refrigerant side.
Compressor
AWSS unit is designed around the most advanced compressors in the industry.
The rotary compressor (for sizes 2.37kW to 8.94kW) and scroll compressor (for sizes 11.58kW to 15.77kW)
give a quite and reliable performance over a wide operating temperature range.
Thermal Expansion Valve (TXV)
AWSS unit (for sizes 8.94kW to 15.77kW) is included with a thermal expansion valve for refrigerant metering.
It can precisely control the exact amount of refrigerant ow through the system to deliver rated cooling and
heating capacity.
2. FEATURES

12
Operating Range
Ensure the operating temperature is in allowable range.
Cooling
Water Entering Temp. (°C)
Indoor Temp. (°CWB)
13
30
15 24
45
STD
19
3. APPLICATION INFORMATION

13
Refrigerant Circuit Diagrams
Model: AWSS 30/40/50/60A

14
Temperature (Seven Segments) Temperature Setting
•Set the desired temperature.
1
•To indicate the ambient temperature set by the
user.
Mode
7
•Press ▲or ▼button to increase or decrease
the set temperature. The setting is between
16°C to 30°C (60°F to 80°F).
Timer Switch Setting
2
•To indicate the selected operating mode: HEAT &
DRY / COOL / FAN (LED green / yellow / red).
Ventilation Speed
•To indicate the selected ventilation speed: LOW /
MED / HIGH
8
•Press the set button to activate the switch timer
of the air conditioner unit (the setting range is
between 1 to 10 hours). The unit will be at ON or
OFF state in function of operating mode.
3
•For U1 -SB125 only have single speed: HIGH. “Sleep” Function
Auto Selection
4
•Automatic selection for speed, whereby the speed
is automatically adjusted according to the room
temperature.
Fan and Ventilation Mode
9
•Press the sleep button to select the sleep
function. This function cannot be selected if the air
conditioner unit is operating under FAN mode only
or dry mode. For SLEEP function operating under
COOL mode, the setting temperature increases to
0.5°C after 30 minutes, 1°C after 1 hour and 2°C
after 2 hours.
5
•Press the fan button to set the desired selection.
“ON/OFF” Switch
Operation Selection Mode •Press once, the air conditioner unit starts.
10
•Press again, the air conditioner unit stops.
•Press the mode button to select the type of
operation mode. 11 IR Receiver
•Cooling unit: COOL, DRY, FAN. Automatic Air Swing (Optional)
•Press the SWING button to activate the
automatic air swing function.
6
•Heat pump unit: AUTO, COOL, DRY, FAN,
HEAT.
12
•To distribute the air to a specific direction, press
the button and wait until the louver move to the
desired direction and press the SWING button
once again.
Controller
SLM
TEMP
SENSOR
AUTO
HIGH
MED
LOW
COOL
DRY
HEAT
FAN
ON/OFF
TIMER
FAN
SLEEPSWING
MODE
11
1
4
7
8
10
5
2
9
3
12
6

15
G18
P1
P2
ON
TIMER
OFF
TIMER
TIMER
CANCEL
SLEEP
MODE
3
4
8
5
6a 6b
7
9
1
2
10
14
15
13
11
12
Operation Guide
1. Transmission Source
• The source where the signal will be transmitted.
2. Signal Transmission Indication
• Blink to confirm that the last setting has been transmitted to the unit.
3. Temperature Setting
• To set the desired room temperature, press the ▲ or ▼ button to increase or decrease the set
temperature.
• The temperature setting range is from 16°C to 30°C (optional setting 20°C to 30°C).
4. Personalize Setting
• Press and hold for 3s, then will blink. Press again to cycle between and .
• Set the desire setting, then leave the handset for 4s without pressing any key and it will save the setting
into the programme.
• Press once to activate the P1 setting, press again to cycle between P1 and P2.
• Press any key to deactivate the personalize setting.
P1 P1 P2

16
5. Automatic Air Swing (optional)
Press the SWING button to activate the automatic air swing function.
To distribute the air to a specific direction, press the SWING button and wait until the louver
move to the desired direction and press the button once again.
6a. Silent Function
Press for quiet operation.
Fan speed turn to minimum speed.
Press again to deactivate the function.
6b. Ionizer Function
Press button to activate the negative ion function, which will refresh the indoor air effectively.
7. Sleep Mode Setting
Press the SLEEP button will activate the sleep mode function. This function is available under
COOL, HEAT and AUTO mode.
When the unit is operating under cooling mode, the set temperature is increased by 0.5°C after
30 minutes, 1°C after an hour, and 2°C after 2 hours.
When the unit is operating under heating mode, the set temperature is decreased by 1°C after 30
minutes, 2°C after an hour, and 3°C after 2 hours.
8. Operating Mode
Press the MODE button to select the type of operating mode.
For cooling only unit, the available modes are: COOL ( ), DRY ( ) and FAN ( ).
9. Fan Speed Selection
Press the button continuously will toggle the fan speed in the following order:
Low Med High Auto
Stop pressing when the desired fan speed appears on the display screen.
10. “ON/OFF” Button
Press one to start the air conditioner unit.
Press again to stop the unit.
11. Timer Cancel
Press the TIMER CANCEL button to cancel the on timer setting.
12. OFF Timer Setting
Press the OFF TIMER button will activate the off timer function.
Set the desired off time by pressing the OFF TIMER button continuously.
13. ON Timer Setting
Press the ON TIMER button will activate the on timer function.
Set the desired on time by pressing the ON TIMER button continuously. If the timer is set to
7.30am, the air conditioner will turn on at 7.30am sharp.
14. Turbo Function
Press for fast cooling.
Fan speed turn to maximum speed.
Press again to deactivate the function.
15. Clock Time Setting
Press and hold to set the clock time.

17
OPERATING STATE AND FAULT TABLE
CEILING CONCEALED FAN COIL UNIT
WIRED REMOTE CONTROL
Error Code at 7 Segment Display Operation / Faulty Indication
r open or shortosnesmooR1EknilB
r openosnesliocroodnI2EknilB
r openosnesliocroodtuO3EknilB
d/ Indoorr coil sensor short/
Outdoor Coil sensor short
aolrevorosserpmoC4EknilB
kaelsaG5EknilB
Water pump fault6EknilB
)ylnopmuptaeHrof(tsorfedroodtuODELtaeHknilB
Ceiling Cassette Fan Coil unit
Wireless Remote Control
Cooling Only Model
LED Indicator Light Display
POWER TIMER SLEEP
POWER TIMER SLEEP HEAT
Cooling Only Model (L208 PCB)
Operation / Faulty Indication
Cool Mode
Timer On
Sleep Mode On
Heat Mode
Auto Mode - Cool
Auto Mode - Heat
1 Time Compressor Overload
2 Times Pump Fault
3 Times Gas Leak
1 Time trohsroneporosnesmooR
2 Times Indoor coil sensor open or short
3 Times Outdoor coil sensor open or short
ON / ON or OFF BLINKING

18
WIRED REMOTE CONTROL
Cooling Model
WATER PUMP
The water pump will on if compressor is on during cooling cycle. The pump will remain on for at least 5
minutes after the compressor is off.
During mode change from cooling to non-cooling mode, the pump will on for minimum 5 minutes. During
defrost cycle, the pump will on and will on for another 5 minutes once the defrost cycle is terminated.
WATER LEVEL SWITCH
This normally close switch is to detect faults in water pump system. It will confirm for 30 seconds for switch
open and 60 seconds for switch close.
Once switch is confirmed open, it will force compressor to cut off. If the switch is closed within 5 minutes, the
compressor is allowed to cut in. If the switch does not close for more than 5 minutes, the system will warn
user regarding the fault, the compressor is not allowed to cut in. If the switch is confirmed opened twice
within 30 minutes, the system assumes there are faults.
Error Code at 7 Segment Display Operation / Faulty Indication
r open or shortosnesmooR1EknilB
r openosnesliocroodnI2EknilB
r openosnesliocroodtuO3EknilB
d/ Indoorr coil sensor short/
Outdoor Coil sensor short
aolrevorosserpmoC4EknilB
kaelsaG5EknilB
Water pump fault6EknilB
)ylnopmuptaeHrof(tsorfedroodtuODELtaeHknilB

19
Location
Both the units are not designed for outdoor installation. Install these units at the INDOOR area that provide
easy piping connections and enough space for service or repair works. The area or ceiling must be able
to withstand the unit weight and is isolated from noise and vibration. Ensure the area is free from water
leakage. Follow the recommended installation clearance as shown below:
Mounting
Both the units will be mounted on the ceiling by the support of four threaded rod. Use only the supplied
hanging bracket. Ensure that the support is strong enough and properly anchored to withstand the weight of
the unit.Use isolator rubber for better noise and vibration control. Do not locate the drainage system at any
point above the drain connection. Make sure water drainage is good and no leakage before.
Installation
Installation for outdoor unit AWSS
Unit: mm
800
500
800
1200

20
Water Loop Piping
The piping connected to the units has to be rmly secured and properly sealed. It is recommended that
exible hoses be used to connect water piping to the unit. It will reduce or eliminate noise transmission (if
any) to the main water piping. Do not over tighten the connections. It will cause water leaking or damage the
adaptors thread. Shut off valves at supply (water inlet) and water return (water outlet) are required as it will
be used for any future service or maintenance work without affecting water ow to other units. The strainer
will lter out the dirt or other foreign material. A balancing valve will be used to balance the system. The
piping system should be cleaned and ushed prior to operation. Make sure all shut off valves is in the open
position before operating the unit. To ensure a proper water ow, the differential water temperature between
inlet and outlet should be 5°C (41°F) to 8°C (46.4°F).
Electrical Connections
Wiring regulations differ from country to country. All eld wiring must comply with your LOCAL ELECTRICAL
CODES. All safety precautions need to strictly adhere.
General Precautions
• Ensure the rated voltage and phase of the unit corresponds to the unit name plate before carrying
out wiring.
• Provide a power outlet to be used exclusively for each unit. A power supply disconnect and circuit
breaker for over current protection should be provided in the exclusive line.
• The unit must be GROUNDED to prevent hazards due to insulation failures.
• All wiring must be rmly connected.
• All wiring must not touch on the hot refrigerant piping, compressor or any moving parts.