Models:
RCM 20D/DR
RCM 25D/DR
RCM 30D/DR
RCM / R5CM 40D/DR
RCM / R5CM 50D/DR
RCM / R5CM 62C/CR
RCM_(i)_01
Ceiling Exposed
Split Systems
1. NOMENCLATURE ......................................................................................................... 1
- PRODUCT LINE UP
2. FEATURES .................................................................................................................... 7
3. APPLICATION INFORMATION ...................................................................................... 8
- OPERATING RANGE
- REFRIGERANT CIRCUIT DIAGRAM
- CONTROLLER
- INSTALLATION
4. SOUND DATA .............................................................................................................. 30
- NC CURVES
5. ENGINEERING AND PHYSICAL DATA ....................................................................... 34
- SPECIFICATIONS
6. PERFORMANCE DATA ............................................................................................... 66
- PERFORMANCE TABLES
TABLE OF CONTENTS
7. DIMENSIONAL DATA................................................................................................... 90
8. ELECTRICAL DATA ..................................................................................................... 94
9. WIRING DIAGRAMS.................................................................................................. 102
10. SERVICING AND MAINTENANCE .......................................................................... 123
11. TROUBLESHOOTING ............................................................................................. 125
12. EXPLODED VIEW AND PART LIST ........................................................................ 130
A
INDOOR
Product Specification Variation
AA : Revision
Type of Connection
F : For Flare
Electrical Characteristic
: 220 – 240V/1Ph/50Hz
K : 208 – 230V/1Ph/60Hz
1. NOMENCLATURE
CM 40 D R 5 R
Model Type
R : Heatpump
Omitted if Cooling Only
Series
C : C Series
D : D Series
Capacity
40 : 40,000 Btu/h
Model Name
CM : Ceiling Exposed
Refrigerant
4 : R407C
5 : R410A
Omitted if R22
C A F A -
Brand
R : Acson
1
OUTDOOR
g
A
A
y
A
/ D : D Series
Others
: First issue
Specifications Variation
O : Standard Unit
B : with Contactor
G : Low Ambient Unit
H : High Ambient Unit
Compressor
P : Matsushita Rotary
M : Mitsubishi Rotar
Market Region
C : Export with CE marking
E : Export without marking
U : ETL spec
Electrical
: 220-240V/1Ph/50Hz
I : Gold Fins
L : Long Piping Unit
S : With H/L Pressure Switch
X : Oxygen Unit
T : Toshiba Rotary
LC 20 C R 5 A
Model Type
R : Heatpump
Omitted if Coolin
Series
C : C series
Capacity
20 : 20,000 Btu/h
Model Name
LC : Single Split Condensing Unit
Refrigerant
5 : R410A
Omitted if R22 Model
Brand
: Acson
Only
O A P C A -
2
OUTDOOR
A
A
A
Product Specification Variation
: First issue
Type of Connection
F : For Flare
Electrical Characteristic
: 220 – 240V/1Ph/50Hz
F : 380 – 415V/3Ph/50Hz
K : 208 – 230V/1Ph/60Hz
LC 30 C R 4 A
Model Type
R : Heatpump
Omitted if Cooling Only
Series
B : B Series
C : C Series
Capacity
30 : 30,000 Btu/h
Model Name
LC : Single Split Condensing Unit
Refrigerant
4 : R407C
Omitted if R22
Brand
: Acson
G E F A -
3
PRODUCT LINE UP
)
d
RCM
R5CM
INDOOR UNIT
RCM-D SERIES PRODUCT LINE UP (R22)
Classification
Marking FinHandset
ControlL208A PCB
RCM
ETL
SASO
W/out Marking
Alum. (Corrugated)
Hydrophilic (Corrugated
20D
25D
30D
40D
Cooling ModelHeat Pump Model
50D
62C AFAA
20DR
25DR
30DR
40DR
50DR
62CR
AFBB
AFCA
AFBB
AFCA
AFDA
AFDF
AFDA
AFDF
AFDA
AFDF
AFBB
AFCA
AFBB
AFCA
AFDA
AFDB
AFDA
AFDB
AFDA
AFDB
AFAA
AFAB
NONMENCLATURE
SLM
XX X X X
XXX X X
XX X X X
XXX X X
XXX XXX
XX X XX X
XXX XXX
XX X XX X
XXX XXX
XX X XX X
XXX X
XX X X X
XXX X X
XX X X X
XXX X X
XXX XXX
XX X X XX
XXX XXX
XX X X XX
XXX XXX
XX X X XX
XXX X
XX X X
CE Mark
G7 Handset
INDOOR UNIT
R5CM-D SERIES PRODUCT LINE UP (R410A)
CLASSIFICATION
Cap. Tube
Control
Refrigerant
Convertible
W/out Cap. Tube
R5CM
Cooling Model
Heat Pump Mo
Control
NONMENCLATURE
L2
AFAAX XXX X
40D
AFABXXXXX
AFAAX XXX X
50D
AFABXXXXX
AFAA X X X X X
62C
AFABXXXXX
AFAAX XXX X
40DR
AFABXXXXX
AFAAX XXX X
50DR
AFABXXXXX
AFAA X X X X X
62CR
AFABXXXXX
G8 Handset
Handset
G12 Handset
Marking
SLM
CE Mark
Fin
Refrigerant Control
Aluminium (Slit)
Hydrophilic (Slit)
W/out Cap.Tube
4
OUTDOOR UNIT
MLC
ALC-C SERIES PRODUCT LINE UP
Classification
Contactor
Low Ambient Kit
Safety Devices
Low Pressure Switch
High Pressure Switch
Nantong Press. SW
Ctrl + Fin
Refrigerant
ALC
Nomenclature
ACPOD
18C
ACPID
ACPOD
20C
ACPID
ACPOD
25C
ACPID
ACPOA
28C
ACPIA
AFGE XXXX X X
AFGF X X X X X X X
30C
AFGG XXXXXXX
FFGE X X X X X X X
FFGG X XXXXXXX
AFGE XXXX X X
35C
Cooling Model
18CR
20CR
25CR
28CR
30CR
35CR
Heat Pump Model
40CR
50CR
61CR
AFGG XXXXXXX
AFGE XXXX X X
AFGG XXXXXXX
40C
FFGE X X X X X X X
FFGF XXXXXXXX
FFGG X XXXXXXX
FFGE X X X X X X X
50C
FFGF XXXXXXXX
FFGG X XXXXXXX
FFFE X X X X X X X
60C
FFFF XXXXXXXX
FFFG X X X X X X X X
ACPOD X X X
ACPID X X X X
ACPOD
ACPID
ACPOD
ACPID
ACPOA
ACPIA
AFFBXX XXXXXX
AFFCXXXXXXXXX
AFFDXXX XXXXXX
FFFB XX XX XXXX X
FFFD X X X X X X X X X X
AFFB XX XX XX X
AFFD X X X X X X X X
AFFB
AFFD
FFFB
FFFC
FFFD
FFFB
FFFC
FFFD
FFFB
FFFC
FFFD
TXV
Cap. Tube
XXX
XX XX
XXX
XX XX
XXX
XX XX
XXX
XX XX
XXX
XX XX
XXX
XX XX
XX XXXXXX
XXX XXXXXX
XX XX XXXX X
XXXXXXXXXX
XXX XXXXXXX
XX XX XXXX X
XXXXXXXXXX
XXX XXXXXXX
X XXXXXXX
X X XX XXXX X
X X XX XXXX X
Special
Gold Fin
High Ambient Kit
XXX
Grille
Compressor
Drain Elbow
Phase Sequencer
Copeland Scroll Comp.
Rotary
CE Marking
XX
Marking
ETL
5
OUTDOOR UNIT
A
A
A
A
A
A
M5LC
A5LC-C SERIES PRODUCT LINE UP
Classification
A5LC
ACPOA X X X
ACPIA X X X X
28C
FCPOA X X X X
FCPIA X X X X X
ACCOA X X X X X X X
35C
ACCIAXXX XXX X X
FCCOAXX XXXXX X X
Cooling Model
Heating Model
ACCOB
40C
FCCOB
50C
FCCOB
61C FCCOB X
ACPOA X X X
ACPI
28CR
FCPOA X X X X X
FCPI
ACCOA X X X X X X X
ACCI
35CR
FCCO
FCCG
ACCOB X X X X
40CR
FCCOB X X X X
50CR FCCOB X
61CR FCCG
Contactor
Low Ambient Kit
X
X
X
Safety Devices
Low Pressure Switch
High Pressure Switch
X
X
XX
X
X
X
X
X
Nantong Press. SW
Ctrl + Fin
Refrigerant
Nomenclature
TXV
Cap. Tube
X XXXX X X
X XXXXX X X
X XXX X X X
XX XX
XX X XXX
XXX XXX X X
XX XXXXXXX X
XXX XXX XXX X
X
Special
Gold Fin
High Ambient Kit
Grille
Compressor
Drain Elbow
Phase Sequencer
XXX
XXX X
X
X
Copeland Scroll Comp.
XX
X
XX
X
XX
Marking
Rotary
ETL
CE Marking
6
2. FEATURES
ULTRA SLIM NEW STYLISH DESIGN PROFILE
This unit is contemporary in design and match even the most up to date interior decor. The slim, round
profile and compact design of this unit adds a touch of elegance to every decor. No indoor connection pipe
and hanger bracket are visible.
CEILING AND FLOOR CONVERTIBLE WITH SPACE SAVING INSTALLATION
This unit is designed for ceiling exposed type and floor exposed type with a very economical and space
saving installation. No need renovation to wall or ceiling for ceiling exposed and no foundation work is
required for floor exposed installation. This easy to install and ready to operate unit ensure rapid and low
installation cost.
STRONG AND ROBUST
The unit is built from strong casing material and robust parts to ensure long lasting reliable service. The
drain pan is made from the POLYSTYRENE with a plastic coating on the surface to ensure no leaking and
no condensation occur.
FRIENDLY SERVICEABILITY
The air filter, electrical parts, fan and fan motor assembly can all be inspected and replace from bottom of
the unit by simply removing the newly designed press in, pull out air intake grille. The POLYSTYRENE drain
pan and the heat exchanger coils can remove from the unit easily by remove the bottom panel.
MICROCOMPUTER REMOTE CONTROLLER
The incorporated microprocessor give more accurate control and with the following extra features:
• Fan motor speed can be set at high/medium/low and automatic.
• Timer on/off - the unit can be pre-set to on and off automatically.
• Electronic thermostat - room temperature is precisely controlled resulting in energy saving and increase
comfort.
• Sleep mode automatically increase set temperature since room temperature is lower at night thus
achieving healthy sleep.
WIRELESS REMOTE CONTROLLER
The compact wireless remote controller makes it possible to operate the air conditioner anywhere within the
room.
AUTO OR MANUAL CONTROL ON VERTICAL AIRFLOW DIRECTION
With auto control, the louver will automatically swing up and down to create an excellent air distribution. You
can select your desired horizontal air flow direction by adjusting the vertical grille.
7
3. APPLICATION INFORMATION
OPERATING RANGE
Ensure the operating temperature is in allowable range.
Cooling only
52
46
35
19
Outdoor temp. (°CDB)
-5
Heat pump
18
6
High ambient
unit
Standard
point
The use of your air conditioner
outside the range of working
!
Caution :
temperature and humidity can
result in serious failure
Low ambient kit
15
24
Indoor temp. (°CWB)
Heating Cooling
52
46
35
Standard
point
19
High ambient
unit
.
Standard
point
Outdoor temp. (°CWB)
-9
15 21
27
Indoor temp. (°CDB)
Note :
Standard operating range.
With High ambient unit. (Optional item)
Please refer to local dealer for unit of this specification.
With Low ambient kit. (Optional item)
Please refer to local dealer for unit of this specification.
Outdoor temp. (°CDB)
-5
Low ambient kit
15
24
Indoor temp. (°CWB)
8
REFRIGERANT CIRCUIT DIAGRAM
MODEL: RCM 20D – ALC 18 / 20C
MODEL: RCM 25D – ALC 25C
9
MODEL : RCM 30D – ALC 28C
DDD
D
MODEL : RCM 30D – ALC 30C
RCM 40D – ALC 35 / 40C
RCM 50D – ALC 50C
RCM 62C – ALC 61C
10
MODEL : R5CM 40D – A5LC 35 / 40C
DDD
R5CM 50D – A5LC 50C
R5CM 62C – A5LC 61C
MODEL : RCM 20DR – ALC 18 / 20CR
11
MODEL : RCM 25DR - ALC 25CR
DRDRDR
RCM 30DR - ALC 28CR
MODEL : RCM 30DR - ALC 30CR
RCM 40DR - ALC 40CR
RCM 50DR - ALC 50CR
12
MODEL : R5CM 40DR – R5LC 35 / 40CR
DRDRDR
ALC 61DR
R5CM 50DR – R5LC 50CR
R5CM 62CR – R5LC 61CR
MODEL : RCM 62CR – ALC / A4LC 61CR
13
G8 Remote Controller
1
2
4
6
12
7
9
11
5
3
8
10
1. TRANSMISSION SOURCE
• The source where the signal will be transmitted. • Set the desired off time by pressing the SET button
2. SIGNAL TRANSMISSION INDICATION continuosly.
• Blink to confirm the last setting has been send to • Press the CLR button to cancel the off timer
the unit. setting.
3. ON/OFF BUTTON 9. AUTOMATIC AIR SWING (OPTIONAL)
• Press once to start the air conditioner. • Press the SWING button to activate the automatic
• Press again to stop the unit. air swing function.
4. TEMPERATURE SETTING • To distribute the air to a specific direction, press
• To set the desired room temperature, press the the SWING button and wait until the louver move to
button to increase or decrease the set temperature. the desired direction and press the button once
• The temperature setting range is from 16°C to again.
30°C (Optional setting 18°C to 30°C). 10. SLEEP MODE SETTING
• Press both buttons simultaneously to toggle the • Press the button to activate sleep mode. This
temperature setting between °C and °F. function is available under COOL, HEAT & AUTO
5. OPERATION MODE mode.
• Press the MODE button to select the type of • When it is activated in COOL mode, the set
operating mode. temperature will be increased 0.5°C after 0 mins,
• For cooling only unit, the available modes are : 1°C after 1 hour and 2°C after 2 hours.
COOL, DRY & FAN. • When it is activated in HEAT mode, the set
• For heat pump unit, the available modes are : temperature will be descreased 1 °C after 30 mins,
AUTO, COOL, DRY, FAN & HEAT. 2°C after 1 hour and 3°C after 2 hours.
6. FAN SPEED SELECTION 11. CLOCK TIME SETTING
• Press the button until the desired fan speed is • Press button + or - to increase or decrease the
achieved. clock time.
7. ON TIMER SETTING
• Press the SET button will activate the on timer
function.
• Set the desired on time by pressing the SET button
continuously. If the timer is set to 7.30am, the air
conditioner will turn on at 7.30am sharp.
• Press the CLR button to cancel the on timer
setting.
8. OFF TIMER SETTING
• Press the SET button will activate the off timer
function.
14
8
3
6
T
10
9
2
5
TIMER
TEMP
AUTO
HIGH
SENSOR
ON/OFF
COOL
DRY
FAN
LOW
SWING
MODE
HEATMED
FAN
SLEEP
1
7
4
7
5
FAN ON/OFF
EMP
SWING
TIMER MODE
SLEEP
1
2
6
3
SLM AC-5300 (OPTIONAL)
1. “ON/OFF” SWITCH 6. “SLEEP” MODE
• Press to start the air conditioner unit. • Press button to activate the sleep
• Press again to stop the unit. function can only be activated under
“cool” or heating mode operation.
2. TEMPERATURE SETTING activated under “cool” mode operation, the
• Set the desired room temperature. set temperature will increase 0.5°C after 30
• Press button to increase or decrease the minutes, 1°C after 1 hour and 2°C after 2
set temperature. Setting range are between hours. If it is actiaved under “HEAT” mode
16°C to 30°C (60°F to 80°F). operation, the set temperature will be
descreased 0.5°C after 30 minutes, 1°C
3. OPERATION MODES after 1 hour and 2°C after 2 hours.
• Press the “mode” button for select the type
of operating mode. 7. AIR SWING
- Cooling Only : • Press button to activate the automatic air
COOL, DRY, FAN swing function.
- Heat Pump :
AUTO, COOL, DRY, HEAT, FAN 8. SENSOR
(AUTO mode is represented by both • Infra red sensor to receive signals from
COOL and HEAT LED light on) wireless controller.
4. FAN SPEED SELECTION. 9. LED DISPLAY
• Press the button until the desired fan speed • To display the set temperature (in °C) and
is achieved. timer delay setting (in hours).
5. TIMER. 10. TRANSMISSION SOURCE
• Press the set button to select the switch • To transmit signals to the air conditioner.
timer of the air conditioner unit (the setting
range is between 1 to 10 hours).
15
OPERATING STATE AND FAULT TABLE
WIRELESS REMOTE CONTROLLER - HANDSET
COOLING: LED INDICATOR LIGHT DISPLAY HEATPUMP : LED INDICATOR LIGHT DISPLAY
COOL DRY FAN COOL DRY FAN HEAT
Self Diagnosis Table
COOL DRY FAN HEAT
{
{
Cool M od e
{
Dry Mode
{
Fan Mode
{
◑
Operation / Faulty Indication
Heat Mode
Auto Mode - Cool
◑
◑
◑
{ ON { / z ON or OFF
WIRED REMOTE CONTROL - SLM
COOLING / HEATPUMP MODEL
Error Code at 7 Segment Display Operation / Faulty Indication
{ Auto Mode - Heat
Compressor Overl oad
◑
◑
◑
Gas Leak
Outdoor Coil Sensor Open / Short
◑
◑
◑
Blink E1 Room sensor open / short
Blink E2 Indoor coil sensor open
Blink E3 Outdoor coil sensor open
Blink E4 Compressor overload /
Blink E5 Gas leak
Blink Heat LED Outdoor defrost ( for He atpump only)
Indoor Coil Sensor Open / Short
Room Sensor Open / Short
BLINKING
Indoor Coil Sensor S hort /
Outdoor Coil Sensor Short
16
PHSAE SEQUENCER
The unit with Scroll Compressor can only rotate in one direction. For this reason, a protective device (phase
sequencer) is fitted to prevent incorrect wiring of the electrical phases. When the three phases are not
connected correctly, the phase sequencer operates, and the unit will not start. This devise is located in the
control box of the outdoor unit.
The following table shows the LED indicator light for phase sequencer under normal operation and fault conditions.
LED_P
(Red)
Normal Operation On - - Reverse Phase Blink Blink Blink Blink
S & T Phase Missing Blink - Blink Blink
T Phase Missing Blink - - Blink
S Phase Missing Blink - Blink R Phase Missing - - - Overload Blink - - Sensor Missing Blink On On On
Notes: 1. “-” means LED off.
2. When R phase missing, no LED or buzzer will indicate the error, but relay 71 (Common) and 81 (NO)
will cut off.
3. The unit will check the discharge sensor availability only during power up.
4. All errors can only recover through manually reset.
LED_R
(Yellow)
LED_S
(Yellow)
LED_T
(Yellow)
17
INSTALLATION
! Caution
Sharp edges and coil surfaces are potential injury hazard. Avoid from contact with them.
(1) INSTALLATION OF OUTDOOR UNIT
PRELIMINARY SITE SURVEY
• Electrical supply and installation is to conform to local authority’s (e.g. National Electrical Board) codes and
regulations.
• Voltage supply fluctuation must not exceed ± 10% of rated voltage. Electricity supply lines must be independent of
welding transformer which can cause high supply fluctuations.
• Ensure that the location is convenient for wiring, piping and drainage
STANDARD MOUNTING
Ensure that the overhead supports are strong enough to hold the weight of the unit. Position the hanger rods (wall
mounting bracket for floor standing), and check for its alignment with the unit as shown in Figure A. Also, check that
the hangers are secured and the base of the fan coil unit is leveled in both horizontal directions, taking into account
the gradient for drainage flow as recommended in Figure B.
Model
A
B
C
D
E
F
All Dimension in mm
RCM 20D/DR RCM 25D/DR RCM 30D/DR RCM 40D/DR RCM 50D/DR
1214 1214 1214 1714 1714
666 666 666 666 666
273 273 273 273 273
130 130 130 130 130
1136 1136 1136 1636 1636
39 39 39 39 39
18
RCM-D RCM 62C
Figure B
Please ensure that the following steps are taken :
• Check the gradient for drainage flow as recommended in Figure B.
• Provide clearance for easy servicing and optimal air flow as shown in Figure C.
• The indoor unit must be installed such that there is no short circuit of the cool discharge air with the
warm return air.
• Do not install the indoor unit where there is direct sunlight shining on the unit. The location should be
suitable for piping and drainage installation. The unit must be a large distance away from the door.
SEMI-ENCLOSED MOUNTING
• In case the unit is to be half recessed into false ceiling, please check the unit is well align.
RCM-D
19
RCM 62C
Figure C
• Provide the installation space as shown in Figure D.
RCM-D RCM 62C
Figure D
20
INSTALLATION - CEILING EXPOSED TYPE
STEP 1
Remove air intake grille, side panel, side close-up and hanger bracket from the unit; see Fig E
Figure E
STEP 2
Position the hanger rods as per Fig B and install the hanger bracket; see Fig F.
.
Figure F
STEP 3
Hanger up the unit and tighten the bolt, after completed the piping and drain pipe; install back the grille and panel Fig.
G.
Figure G
21
INSTALLATION - FLOOR STANDING TYPE
* Floor standing type installation not applicable for MCM 020D/DR, MCM 025D/DR, M5/CM 062C/CR.
STEP 1
Remove air intake grille, side panel, side close-up and side panel from the unit; see Fig E.
STEP 2
Position the floor support (field supply) as per Fig B. install the unit; see Fig I.
STEP 3
Two types of piping and drain pipe connection as Fig J.
PIPING AND DRAIN PIPE INSTALLATION
Figure I
Figure J
22
(2) INSTALLATION OF OUTDOOR UNIT
As condensing temperature rises, evaporating temperature rises and cooling capacity drops. In order to achieve maximum
cooling capacity, the location selected for outdoor unit should fulfill the following requirements :
• Install the condensing (outdoor) unit in a way such that hot air distributed by the outdoor condensing unit cannot be
drawn in again (as in the case of short circuit of hot discharge air). Allow sufficient space for maintenance around the
.
unit
• Ensure that there is no obstruction of air flow into or out of the unit. Remove obstacles which block air intake or
discharge.
• The location must be well ventilated, so that the unit can draw in and distribute plenty of air thus lowering the condensing
temperature.
• A place capable of bearing the weight of the outdoor unit and isolating noise and vibration.
• A place protected from direct sunlight. Otherwise use an awning for protection, if necessary.
• The location must not be susceptible to dust or oil mist.
INSTALLATION CLEARANCE
• Outdoor units must be installed such that there is no short circuit of the hot discharge air or obstruction to smooth air
flow. Select the coolest possible place where intake air should not be hotter than the outside temperature (max. 45°C)
ALL MODELS A B C D
Minimum Distance 300 mm 1000 mm 300 mm 500 mm
CAUTION : If the condensing unit is operated in an atmosphere containing oils(including machine oils),
salt(coastal area), sulphide gas(near hot spring, oil refinery plant), such substances may lead to failure of the
unit.
23
(3) REFRIGERANT PIPING
D/DR
D/DR
D/DR
D/DR
D/DR
D/DR
D/DR
D/DR
D/DR
D/DR
D/DR
15
D/DR
D/DR
MAXIMUM PIPE LENGTH AND MAXIMUM NUMBER OF BENDS
• When the pipe length becomes too long, both the capacity and reliability drop. As the number of bends increases,
system piping resistance to the refrigerant flow increases, thus lowering the cooling capacity, and as the result the
font compressor may become defective. Always choose the shortest path and follow the recommendation
as tabulated below:
Model
Maximum Length, m 15 15 15 45
Maximum Elevation, m 8 8 8 25
Maximum No. of Bends 10 10 10 10
Model
Maximum Length, m 45 45 35
Maximum Elevation, m 25 25 20
Maximum No. of Bends 10 10 10
Indoor 20D/DR 25D/DR 30D/DR
Outdoor 18 / 20C/CR 25C/CR 28C/CR 30C/CR
Indoor 40D/DR 50D/DR 62C/CR
Outdoor 35 / 40C/CR 50C/CR 61C/CR
PIPING SIZES (FLARE CONNECTION TYPE)
Piping sizes are as follows:
R22
Model ALC 18/20C/CR ALC 25C/CR ALC 28C/CR ALC 30C/CR
Liquid (mm/in) 6.35 / 1/4 9.52 / 3/8 9.52 / 3/8 9.52 / 3/8
Suction (mm/in) 15.88 / 5/8 15.88 / 5/8 15.88 / 5/8 15.88 / 5/8
Model ALC 35C/CR ALC 40C/CR ALC 50C/CR ALC 61C/CR
Liquid (mm/in) 9.52 / 3/8 9.52 / 3/8 9.52 / 3/8 12.70 / 1/2
Suction (mm/in) 19.05 / 3/4 19.05 / 3/4 19.05 / 3/4 19.05 / 3/4
R410A
Model A5LC 20C/CR A5LC 25C/CR A5LC 28C/CR A5LC 35C/CR
Liquid (mm/in) 6.35 / 1/4 6.35 / 1/4 9.52 / 3/8 9.52 / 3/8
Suction (mm/in) 12.70 / 1/2 15.88 / 5/8 15.88 / 5/8 15.88 / 5/8
Model A5LC 40C/CR A5LC 50C/CR A5LC 61C/CR
Liquid (mm/in) 9.52 / 3/8 9.52 / 3/8 9.52 / 3/8
Suction (mm/in) 15.88 / 5/8 15.88 / 5/8 19.05 / 3/4
PIPING CONNECTION TO THE UNITS
• Align the center of the piping and tighten the flare nut sufficiently with fingers.
• Finally tighten the flare nut with torque wrench unit the wrench clicks.
• When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on
the wrench.
Pipe Size (mm/in) Torque (Nm)
6.35 (1/4) 18
9.52 (3/8) 42
12.70 (1/2) 55
15.88 (5/8) 65
19.05 (3/4) 78
24
4) WIRING
ELECTRICAL CONNECTIONS
• Wiring regulations on wire diameters differ from country to country. Please refer to your LOCAL ELECTRICAL
CODES for field wiring rules. Be sure that installations comply with the rules and regulations.
GENERAL PRECAUTIONS
• Ensure that the rated voltage of the unit corresponds to the name plate before carrying out proper wiring
according to the wiring diagram.
• Provide a power outlet to be used exclusively for each unit. A power supply disconnects and a circuit
breaker for over-current protection should be provided in the exclusive line.
• The unit must be GROUNDED to prevent possible hazards due to insulation failures.
• All wiring must be firmly connected.
• All wiring must not touch the hot refrigerant piping, compressor or any moving parts of fan motors.
(5) VACUUMING AND CHARGING
The pre-charged outdoor unit does not need any vacuuming or charging. However once it is connected, the
connecting pipe line and the indoor unit need to be vacuumed before releasing the R22/R407C/R410A from the
outdoor unit.
1. Open the service port core cap.
2. Connect pressure gauge to the service port.
3. Connect the line to vacuum pump. Open the charging manifold valve and turn the pump on. Vacuum to -0.1
MPa (-760mmHg) or lower. (Evacuation time varies by the pump but averagely in 1 hour).
Note : R407C - Fix filter dryer
R22 - Nil
R410A - Nil
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(6) ADDITIONAL CHARGE
030D/DR
035D/DR
040D/DR
050D/DR
061D/DR
035D/DR
040D/DR
050D/DR
061D/DR
• The refrigerant charge has already charged into the outdoor unit. For the piping length of 7.6m, additional
refrigerant charge after vacuuming is not necessary.
• When the piping length is more than 7.6m, please use the table below (unit in gram).
R22
Model 10m 12m 15m 25m 35m 45m
18C/CR 38 / 54 69 / 98 116 / 166 - - 20C/CR 37 / 38 69 / 69 115 / 116 - - 25C/CR 95 / 132 173 / 243 292 / 408 - - 28C/CR 94 / 133 173 / 244 291 / 411 - - 30C/CR 133 / 133 243 / 243 409 / 409 962 / 961 1515 / 1514 2068 / 2067
35C/CR 130 / 136 238 / 248 400 / 418 940 / 983 1481 / 1547 2021 / 2112
40C/CR 134 / 136 245 / 248 412 / 418 968 / 983 1525 / 1547 2081 / 2112
50C/CR 130 / 134 238 / 245 400 / 412 942 / 968 1483 / 1525 2024 / 2081
61C/CR 245 / 243 450 / 446 756 / 751 1778 / 1765 2799 / 2780 -
R410A
Model 10m 12m 15m 25m 35m 45m
35C/CR 63 / 100 116 / 182 195 / 307 457 / 721 720 / 1136 983 / 1551
40C/CR 61 / 97 112 / 178 189 / 299 445 / 703 700 / 1107 956 / 1511
50C/CR 50 / 87 92 / 159 155 / 267 363 / 628 572 / 989 781 / 1350
61C/CR 94 / 163 173 / 298 290 / 502 682 / 1179 1075 / 1857 -
The additional refrigerant charge amount recommended is a guideline for longer piping application. The actual
charge required may be different from the guideline due to different application and variation in site conditions.
Diagram shows typical charging method.
Note : R407C - Fix filter dryer
R22 - Nil
R410A - Nil
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SPECIAL PRECAUTIONS WHEN DEALING WITH REFRIGERANT R410A UNIT
1) WHAT IS NEW REFRIGERANT R410A?
R410A is a new HFC refrigerant which does not damage the ozone layer. The working pressure of this new
refrigerant is 1.6 times higher than conventional refrigerant (R22), thus proper installation / servicing is
essential.
2) COMPONENTS
Mixture of composition by weight : R32(50%) and R125(50%)
3) CHARACTERISTIC
• R410A liquid and vapor components have different compositions when the fluid evaporates or
condenses. Hence, when leak occurs and only vapor leaks out, the composition of the refrigerant
mixture left in the system will change and subsequently affect the system performance. DO NOT add
new refrigerant to leaked system. It is recommended that the system be evacuated thoroughly before
recharging with R410A.
• When refrigerant R410A is used, the composition will differ depending on whether it is in gaseous or
liquid phase.
Hence when charging R410A, ensure that only liquid is being withdrawn from the cylinder or can. This
is to make certain that only original composition of R410A is being charged into the system.
• POE oil is used as lubricant for R410A compressor, which is different from the mineral oil used for R22
compressor.
Extra precaution must be taken to avoid exposing the R410A system to moist air.
4) CHECK LIST BEFORE INSTALLATION / SERVICING
• Tubing
Refrigerant R410A is more easily affected by dust or moisture compared with R22, make sure to
temporarily cover the ends of the tubing prior to installation
• Compressor oil
No additional charge of compressor oil is permitted.
• Refrigerant
No other refrigerant other that R410A
• Tools (size of service port is different from R22 system)
Tools specifically for R410A only (must not be used for R22 or other refrigerant)
i) Gauge manifold and charging hose
ii) Gas leak detector
iii) Refrigerant cylinder/charging cylinder
iv) Vacuum pump c/w adapter
v) Flare tools
vi) Refrigerant recovery machine
5) HANDLING AND INSTALLATION GUIDELINES
Like R22 systems, the handling and installation of R410A system are closely similar. All precautionary
measures; such as ensuring no moisture, no dirt or chips in the system, clean brazing using nitrogen, and
thorough leak check and vacuuming are equally important requirements. However, due to its hydroscopic
POE oil, additional precautions must be taken to ensure optimum and trouble-free system operation.
a) During installation or servicing, avoid prolong exposure of the internal part of the refrigerant system to
moist air. Residual POE oil in the piping and components can absorb moisture from the air.
b) Ensure that the compressor is not expose to open air for more than the recommended time specified by
its manufacturer (typically less than 10 minutes). Removed the seal-plugs only when the compressor is
about to be brazed.
c) The system should be thoroughly vacuumed to 1.0 Pa ( 700mmHg) or lower. This vacuuming level is
more stringent than R22 system so as to ensure no incompressible gas and moisture in the system.
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d) When charging R410A, ensure that only liquid is being withdrawn from the cylinder or can. This is to
ensure that only the original composition of R410A is being delivered into the system. The liquid
composition can be different from the vapor composition.
Dip-pipe Invert cylinder
without dip-pipe
Liquid
withdrawal
e) Normally, the R410A cylinder or can is being equipped with a dip-pipe for liquid withdrawal. However, if
the dip-pipe is not available, invert the cylinder or can so as to withdraw liquid from the valve at the
bottom.
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