Acson ART 60 B/BR User manual

Rooftop Packaged
Air Conditioners
ART - B - 2009
ART 60 B/BR
ART 90 B/BR
ART 120 B/BR
ART 150 B/BR
ART 180 B/BR
Models:

1. NOMENCLATURE ..........................................................................................................1
- PRODUCT LINE-UP
2. FEATURES .....................................................................................................................4
3. APPLICATION INFORMATION.......................................................................................5
- OPERATING RANGE
- REFRIGERANT CIRCUIT DIAGRAMS
- CONTROLLERS
- INSTALLATION
4. SOUND DATA...............................................................................................................20
5. SELECTION PROCESS...............................................................................................24
- DRIVE PACKAGE
- BLOWER CURVES
6. ENGINEERING & PHYSICAL DATA............................................................................31
- SPECIFICATIONS
7. PERFORMANCE DATA................................................................................................43
- PERFORMANCE TABLE
- POWER TABLE
8. DIMENSIONAL DATA....................................................................................................55
9. ELECTRICAL DATA ......................................................................................................58
10.WIRING DIAGRAMS.....................................................................................................62
11. SERVICING & MAINTENANCE...................................................................................70
12.TROUBLESHOOTING .................................................................................................71
13. EXPLODED VIEW & PARTS LIST ...............................................................................76
TABLE OF CONTENTS

1
60 RRTA
Capacity
Brand
-BAAXF
Product Specification Variation
Type Of Connection
X : Not Applicable
Electrical Characteristic
F : 380-415V/3Ph/50Hz
Model Type
R : Heatpump
Series
B : B series
60 : 60,000 Btu/h
Model Name
RT :Rooftop
A : Acson
1. NOMENCLATURE

2
Product Line-up
ART-B Series
Cooling Only
Netware 3 Seq. Controller PCB Board :U1SB125 Seq. PCB Capillary Tube Gold Fin (NA549) Scroll Compressor Saranet Air Filter
Side Flow Convertible Filter Drier
60B FXAA XXXXXXXXX
90B FXAA XXXXXXXXX
120B FXAA X XXXXXXXX
150B FXAA X XXXXXXXX
180B FXAA X XXXXXXXX
Cooling Nomenclature
Classification
Model
ART
Cooling Only

3
ART-B Series
Heatpump
Netware 3 Seq. Controller PCB Board :U1SB125 Seq. PCB Capillary Tube Gold Fin (NA549) Scroll Compressor Saranet Air Filter Side Flow Convertible Filter Drier
60BR FXAA XXXXXXXXX
90BR FXAA XXXXXXXXX
120BR FXAA X XXXXXXXX
150BR FXAA X XXXXXXXX
180BR FXAA X XXXXXXXX
Classification
Heatpump
ART
Model Cooling Nomenclature

4
Package Unit
Dubbed the “Plug and Play” equivalent in the air-conditioning industry, the single unit conguration allows free
installation. No additional piping work is required as both the indoor and outdoor sides are pre-connected.
Refrigerant is factory pre-charged to ensure clean and efcient operation.
Structure & Construction
Designed to evacuate rainwater and condensed water easily from the unit. The unit cabinet is made of powder
coated sheet metal specially suitable for outdoor use. All parts of the structure are fastened with non corrosive
screws and bolts.
Base Beam
The base beams are xed and provide a rigid foundation for the entire unit. The beam has the forklift slots
and rigging holes for better handling purpose. It is also designed to allow for sitting on a roof curb, which the
dimensions of the roof curb should follow strictly in installation manual.
Flat Top Design
Unit’s at top design allows the unit to be stacked up, resulting in maximum utilization of warehouse and
container space.
Flexible Air Supply
Unit uses belt driven fan such that the required air volume and static can be adjusted on site according to the
requirement, without changing the motor or drives. This exibility allows for wider application. (only applicable
for unit with variable picthes pulley)
Convertible Return And Supply Air
Unit can be easily converted from horizontal to vertical duct conguration by relocating the panels and blower
seating direction.
Scroll Compressor
Unit is equipped with higher efciency and more reliable scroll compressor. The compressor of each model is
mounted on rubber vibration isolators in order to reduce the noise level and vibration transmissions.
Electronic Control
Each unit is supplied with a compact & easy to use microprocessor based control, with special algorithm for
cooling and heating capacity management according to different load and ambient conditions;
• Auto adaptive cooling and heating set point
• Indoor antifreeze protection
• Outdoor defrost
• Compressor overload
• Sequential control and balance loading (only applicable for model with >1 compressor)
• Memory backup & auto random restart
• 7 days programmable timer
Non-Corrosive Sloped Condensate Drain Pan
Saranet Filter As Standard
Slots For 2” Return Air Filters
Even though Saranet lter is provided as standard, but unit is designed with a 2” return air lter rail to cater for
any use of 2” lter.
Higher Energy Efciency Rating
2. FEATURES

5
Cooling
Operating Range
Ensure the operating temperature is in allowable range.
Heating
Caution :
The use of your air conditioner
outside the range of working
temperature and humidity can
result in serious failure.
Outdoor temp. (°CDB)
Outdoor temp. (°CWB)
Indoor temp. (°CDB)
46
43
40
30
20
10
10
10 15 27
20 30
-10
20
18
-6
30
0
10 14 19
20 23 30
19
3. APPLICATION INFORMATION

6
Refrigerant Circuit Diagrams
Model: ART 60/90/120/150/180B
Model: ART 60/90/120/150/180BR
Cooling operation
Cooling operation
Heating operation
Check
Joint
Check
Joint
Check
Joint
Low Pressure
Switch High Pressure
Switch
Low Pressure
Switch
Discharge
Discharge
Check Joint
Compressor
Compressor Accumulator
Accumulator
Capillary Tube
Capillary Tube
Capillary Tube
Heat Exchanger
(outdoor)
Heat Exchanger
(indoor)
Heat Exchanger
(indoor)
Heat Exchanger
(outdoor)
Filter drier
Filter drier
Compensator
Note: 120, 150, 180 consists of 2 circuits in the system
Note: 120, 150, 180 consists of 2 circuits in the system
4 Ways
Valve
(FOR 120/150BR ONLY)

7
Controllers
SLEEP
SWING ON TIMER OFF TIMER
SET TEMP
TIMER ACTIVE DAY HOUR MINUTE
FANMODE
CLOCK
ON/OFF
Netware III (ART 60/90B/BR)
Fan Speed Display
Display the fan speed
setting
(Auto/High/Medium/Low)
Operating Mode
Display
Display the current
mode of operation Sleep Display
Display the
sleep / energy
saving status
Swing Display
Display the air
swing status
°C or °F
Display
Display the
temperature in
°C or °F
On/Off Status
Lamp Display
Set
Temperature
or Room
Temperature
Display
Display the set
or room
temperature
Current Time,
Start/Stop
Time Display
Display the
current time as
well as the start
and stop time
programmed
Key Lock
Display
Display
indicates when
key lock
function is
activated
Error Display

8
SLEEP
SWING ON TIMER OFF TIMER
SET TEMP
TIMER ACTIVE DAY HOUR MINUTE
FAN MODE
CLOCK
ON/OFF
Operating Lamp
On/Off
- Starting operation:
When the unit is
off, press the
ON/OFF button.
The operation LED
lights and the unit
will be turned on.
- Stopping operation:
When the unit is
on, press the
ON/OFF button.
The operation LED
is extinguished
and controls are
turned off.
Set Temperature
- Press this button to
set the tempera-
ture. By pressing up
or down once,
temperature
changes by 1°C (or
1°F)
- The temperature
range is 16°C to
30°F (60°F to 85°F)
- In FAN mode,
temperature cannot
be set.
- Pressing up and
down buttons will
toggle the tempera-
ture unit between
°C and °F
- When set tempera-
ture button is
pressed, the set
temperature will be
displayed for 5
seconds. After that,
room temperature
will be displayed.
Mode
Press MODE button
to select operation
mode from Cool,
Heat, Auto, Dry and
Fan. The display
will show the
selected mode.
Fan
Press Fan button to
select Auto, High,
Medium or Low fan
speed
Sleep
Press SLEEP
button to activate
the sleep or energy
saving mode
Swing
Press SWING button
to activate the air
sweep function
Remarks: Fan speed and swing are not applicable for rooftop model

9
SLEEP
SWING ON TIMEROFF TIMER
SET TEMP
TIMER ACTIVE DAY HOUR MINUTE
FAN MODE
CLOCK
ON/OFF
Clock
– Press button once to set the clock mode.
– Press button again to disable the clock mode.
– When the clock mode is activated, the time and date can be
set or changed by pressing the DAY, HOUR & MINUTE button.
Timer Active
– Press Button until “TIMER ACTIVE” appears to activate the timer.
– The symbol will indicate Event 1, Event 2 and/or Event 3 timers
are active.
– To clear the timer setting, press and hold TIMER ACTIVE button
for 2 to 3 second until the word “TIMER ACTIVE” is no longer
display.
– To resume the timer setting after the timer has been deactivated.
press and hold TIMER ACTIVE button again for 2 to 3 seconds
until the word “TIMER ACTIVE” is displayed.
– This feature protects
the controls from being
tempered with by
children or authorized
persons.
– To activate, press
MINUTE button three
times consecutively,
“KEY LOCK” symbol will
appear on the LCD
display.
– During this time,
ON/OFF button and FAN
button can be used.
– To cancel this feature,
press the MINUTE
button again three tims
consecutively.
Timer Active Display
Key Lock
When the control is in
set clock or set timer
mode, pressing the
MINUTE button will
change the set minute.
Minute
When the control is in
set clock or set timer
mode, pressing the
HOUR button will
change the set hour.
Hour
When the control is in
set clock or set timer
mode, pressing the DAY
button will change the
set hour.
Day
Current Time Display

10
Sequential Controller (Model: ART 120/150/180B/BR)
Sequential Controller Functions
1) Sequential Controller LCD Display
A : Time display
B : Error indication
C : Compressor running display
(up to 4 compressors)
D : Key lock display
E : Heat display
(up to 2 heaters)
F : Energy saving mode display
G : Compressor defrost
cycle display
(up to 4 compressors)
H : Operation mode display
I : Temperature set display
2) Operating Guide
a. “ON/OFF” Switch
• Press once to start the air conditioning unit.
• Press again to stop the unit.
• The operation lamp next to the key lights up and goes off respectively when the unit is running or
not running.
• Caution : In the case when the ON/OFF key is pressed immediately after the operation is stopped,
the unit will not restart until 3 minutes later to protect the compressor.
b. Selecting Operating Mode
• Press the MODE key to select the type of operating mode. Consecutive press of the key switches
the operation over “COOL”, “HEAT”, “AUTO” and “FAN”
c. SAVE Mode
• Press the SAVE key to select the energy saving function. This option is only available for “COOL”,
“HEAT” and “AUTO” modes.
d. Auxiliary Electric Heater
• If the “HEAT” mode provides insufficient heating to a room even at the highest temperature setting
(30°C), press the HEATER key to activate the auxiliary electric heater. For models with two heaters,
consecutive press of the key allows the selection of one or both heaters active.

11
e. Temperature Setting
• To set the desired room temperature, press or to increase or decrease the set
temperature in the range of 16°C to 30°C.
• Press both and simultaneously to toggle between °C and °F setting.
f. Time Setting
Real time clock
• Press the CLOCK key once to activate set clock mode.
• Press again to disable set clock mode.
• Under set clock mode, the time of the present day can be set by pressing the respective MINUTE,
HOUR and DAY key.
7 days timer
• Press the ON TIMER key to activate autoON timer mode. Under this mode, press the respective
MINUTE, HOUR and DAY key to select the time of the week when the air-conditioning unit is to
automatically start running. Press ON TIMER key again to save the setting.
• Press the OFF TIMER key to activate autoOFF timer mode. Under this mode, press the respective
MINUTE, HOUR and DAY key to select the time of the week when the air-conditioning unit is to
automatically stop running. Press the ON TIMER key again to save the setting.
• Then to activate the 7 days timer, press and hold the TIMER ACTIVE key until the word “TIMER
ACTIVE” appears on the LCD screen. Repeat the same step to disable the 7 days timer.
g. Other Function
Key Lock
• Press the MINUTE key 3 times consecutively to activate the key lock. A “KEY LOCK” symbol will appear
on the LCD screen. At this point, only the ON/OFF key is valid.
• To disable the key lock, again press the MINUTE key 3 times consecutively.
Test Run
• Press the TEST RUN key 2 times consecutively to test run the unit.
3) Error Code
When the system is on and an error occurs, the ON/OFF LED on the LCD panel will blink and an error
code is shown. When the system is off and there is a thermistor error, the ON/OFF LED is off but the error
code is still displayed. Each error code represents different message as below
Error Faulty Indication Error Faulty Indication
Code Code
E01 Require manual reset (possible causes) E20 Indoor coil sensor 1 open
E02 Compressor 1 high temperature (overload) E21 Indoor coil sensor 2 open
E03 Compressor 2 high temperature (overload) E24 Outdoor coil sensor 1 short
E06 Compressor 1 high pressure trip / contact open E25 Outdoor coil sensor 2 short
E07 Compressor 2 high pressure trip / contact open E28 Outdoor coil sensor 1 open
E10 Compressor 1 trip / low refrigerant / outdoor abnormal E29 Outdoor coil sensor 2 open
E11 Compressor 2 trip / low refrigerant / outdoor abnormal E32 Compressor 1 de-ice

12
Error Faulty Indication Error Faulty Indication
Code Code
E14 Room sensor short E33 Compressor 2 de-ice
E15 Room sensor open
E16 Indoor coil sensor 1 short
E17 Indoor coil sensor 2 short
4) Installation Of LCD Remote Controller
a) Accessories
The following accessories are included. If any part is missing, contact your dealer immediately.
1 Remote controller
2 Wooden screw 4.1 x 16 (2 pieces)
3 Instruction manual
b) Step-by-step guide
i) First, open up the casing of the LCD remote controller into its top and bottom case using a screw
driver. To do this, insert the screwdriver into the lower slot and slide it in the outward direction.
ii) Fix the bottom case onto the wall with the 2 wooden screws provided. Then, insert the 4 connecting
wires (from the main board) through the slot on the lower right.
iii) Connect one end in each of the 4 wires to the terminal block behind the top case as shown below.
The wire that goes into the “GND” terminal at the top case must be connected at the other end to the
“GND” terminal at the main board. The same goes for the “+5V”, “B” and “A” connection.
iv) Fasten back the top and bottom case into place. Hook the two upper claws into their respective slots
and snap the lower part shut.
5) Auto Random Restart
When power is resumed, the unit will automatically restart and operate at the previous setting as before
power failure occurred. (Remove jumper at JH/JP1 to cancel the auto random restart function. Please
diagram for the location of JH/JP1 Jumper).
Lower slot
for opening LCD
casing
Connection behind
top case LCD Remote
(Bottom case)
Connection
wires
LCD Remote
(Top case)
2 x Wooden
screw
Connection at
main board
GND
+5V
B
A
GND
+5V
B
A

13
Unit
Roof deck
Seal with tar
Roof curb
Installation
1) Location for Installation
Install the unit in a manner that prevents short cycling of condenser air back into the unit (as in the case of
short circuit of discharge air). Allow sufcient space for maintenance around the unit.
When two or more units are installed in a location, they must be positioned such that one unit will not be
taking the discharge air from another unit.
Ensure that there is no obstruction of air ow into or out of the unit. Remove obstacles which block air intake
or air dischage.
The location must be well ventilated.
A place capable of bearing the weight of the outdoor unit and isolating noise and vibration.
A location that has adequate drainage.
A place where the unit will not be buried in snow.
A place where the air discharge and operating sound level will not annoy the neighbors.
The location must not be suceptible to dust or oil mist.
The location where it is not accessible by general public.
Keep the unit, power cable and transmission wiring, at least 1m away from TVs and radios, to prevent
distorted pictures and static. (Depending on the type and the source of the electrical waves, static may be
heard even when more than 1m away)
2) Unit Support
(For down throw unit only)
1. The gure shows the use of the roof curb
for mounting these units.
2. The curb should be sealed and xed to the
roof by weather stripping. A suggested
means of sealing the unit and roof curb as
shown in the right.
3. Recommended roof curb dimension is
shown below.
SECTION VIEW
Return Duct
Supply Duct
Models 60B
A 1545 1875 1980
B970 1505 2060
C 265 520 490
D 288 564 740
E 635 890 660
F 334 535 670
1980
2060
490
740
660
670
Dimensions in mm
140
25
43 E 25
25
25
A
B
F D
43
C
90B 120/150B 180B

14
Spreader bar
Chain
Lifting Beam
Lifting Holes for shackle
(4 corners)
3) Duct Construction
- These unis are equipped with supply and return air openings. Duct connection to the unit should be
made with duct anges and secured directly to the air openings with exible duct connectors to avoid
normal noise transmission.
- To prevent air leakage, all duct seams should be sealed.
- Ducts in unconditioned s[aces, must be insulated.
- Ducts exposed to the outside must be weather proofed.
- Ducts that entering building through the roof, the entering should be sealed with weather stripping to
prevent rain, sand, dust etc. from entering the building.
- Correct size of lter must be install at the return air duct.
- Return air lter is supplied with the unit.
4) Unit Lifting
Holes at 4 corners of the unit base are used for
unit lifting purpose.
The spreader bar shall be slightly wider than
the unit width.
The insulation should be added at 4 corners of
the chain to prevent the damage of the panel
when lifting.
Note: Unit shown in diagram is MRT090B. Other models
will follow the same method in lifting.
5) Drain Piping
- A 1 FPT condensate drain tting is provided.
The drain pipe can be led out at the front
side.
- The drain pipe must be provided with a trap
on the outside of the unit and also installed
at an incline for proper drainage, as shown in
the right.
- To prevent condensate formation and
leakage, provide the drain pipe with
insulation to safeguard against sweating.
- Upon completion of the piping work, check
that there is no leakage and that the water
drains off properly.
The drain piping should have a drain trap.
A >2B (approximate 50mm)
B ~ I.S.P
=
~
Drain piping
Drain trap
The drain pipe
should extend
below this level.
Note: I.S.P. = Internal Static Pressure
Drain trap for condensate
B
A

15
ART 60/90B/BR
500
500
1000
AIR FILTER
SERVICE
MOTOR /
BLOWER
SERVICE CONDENSER
INLET
CONDENSER
OUTLET
CONDENSER INLET
CONTROL BOX /
COMPRESSOR
SERVICE
1000
1000
( MINIMUM CLEARANCE )
( MINIMUM CLEARANCE )
( MINIMUM CLEARANCE )
6) Space Required Around Unit
(unit ; mm)
All space value ; minimum clearance
Note : Unit shown is ART 60/90B, other models will follow the same clearance.

16
ART 120/150B/BR
1000
MOTOR/
BLOWER
SERVICE CONDENSER
INLET
CONDENSER
INLET
CONDENSER
OUTLET
AIR FILTER
SERVICE
CONTROL BOX / COMPRESSOR SERVICE
1000
500
500
1000
2000
(unit ; mm)
All space value ; minimum clearance

17
Step 1 Step 2
Step 4 Step 3
Remove the side panel Remove the Pulley Belt Remove screws at both sides
Cover the horizontal supply opening
with the blower support that detached
from the blower
Install back the pulley belt. Adjust the belt tension.
Lastly, install back the side panel
Note:
For down flow conversion, belt length will need to
be changed.
For unit with standard pulley, belt length = 900 mm
Shaft to shaft Distance for downflow, C-C = 320 mm
Lastly, install back the side panel
Turn the blower to face
bottom. Screw at both sides
Install back the
pulley belt.
Adjust the belt
tension
by moving
the motor base
Cover the horizontal
return opening with
the cover and srew tightly
Unscrew the vertical
return cover from the
base panel
Remove the side panel
at return side
7) Unit conversion
In the case of converting to down ow unit, change according to the following steps.
ART 60B/BR

18
ART 90B/BR
Step 1 Step 2
Step 4 Step 3
Remove the side panel Remove the Pulley Belt
Remove screws at both sides
Cover the horizontal supply opening
with the blower support that detached
from the blower
Lastly, install back the side panel Install back the pulley belt. Adjust the belt tension.
Lastly, install back the side panel
Note:
For down flow conversion, belt length will need to
be changed.
For unit with standard pulley, belt length = 1120 mm
Shaft to shaft Distance for downflow, C-C = 400 mm
Turn the blower to face
bottom. Screw at both sides
Install back the
pulley belt.
Adjust the belt
tension
by moving
the motor base
Cover the horizontal
return opening with
the cover and srew tightly
Unscrew the vertical
return cover from the
base panel
Remove the side panel
at return side
The two side plates are srewed
on the blower support as shown