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ORDER NO. MAC0503047C2
Air Conditioner
CS-F14DD3E5 CU-L28DBE5
CS-F18DD3E5 CU-L34DBE5
CONTENTS
Page
1 SERVICE INFORMATION
3
Page
3 SPECIFICATION
6
1.1. Example of trouble at test operation
3
3.1. CS-F14DD3E5 CU-L28DBE5
6
1.2. Caution of test operation
3
3.2. CS-F18DD3E5 CU-L34DBE5
7
1.3. Caution during automatic address setting
3
1.4. Operation Range
3
4.1. CS-F14DD3E5 CS-F18DD3E5
8
4
4.2. CU-L28DBE5
9
4.3. CU-L34DBE5
10
2 FEATURES
2.1. Hide-away type
4
2.2. Outdoor unit
4
2.3. A brand-new control method using the latest in technology
5
8
4 DIMENSIONS
5 REFRIGERATION CYCLE
11
6 BLOCK DIAGRAM
12
6.1. CS-F14DD3E5 CS-F18DD3E5
12
© 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
6.2. CU-L28DBE5
13
6.3. CU-L34DBE5
14
11.1. Outline
66
15
11.2. Tools for installing/servicing refrigerant piping
67
7.1. CS-F14DD3E5 CS-F18DD3E5
15
11.3. Refrigerant piping work
71
7.2. CU-L28DBE5
16
11.4. Installation, transferring, servicing
73
7.3. CU-L34DBE5
17
12 TROUBLE SHOOTING GUIDE
77
7 WIRING DIAGRAM
8 WIRED REMOTE CONTROL OPERATING INSTRUCTIONS
11 INSTALLATION & SERVICING AIR CONDITIONER
66
18
12.1. For standard installation
77
8.1. Name and function of each part
18
12.2. During twin operation
79
8.2. Remote Control - Display
19
12.3. During group control operation
81
8.3. Remote Control - Panel
20
12.4. Address setting for twin system
82
8.4. How to set remote control day and time
21
12.5. Address setting for group control system
83
8.5. How To Select The Timer
21
12.6. Wiring mistake prevention
85
8.6. Daily Timer Setting
22
12.7. Test operation and self diagnosis
86
8.7. Weekly Timer Setting
23
12.8. Emergency operation
89
12.9. Self-diagnosis
90
9 OPERATION CONTROL
25
9.1. Operation mode
25
9.2. Compressor start control
25
13.1. Sound data
92
9.3. Cooling operation
25
13.2. Sound measurement point
94
9.4. Heating mode operation
27
13.3. Discharge and suction pressure
95
9.5. Odour removing operation
29
13.4. Capacity and power consumption
9.6. Energy save operation
30
13.5. Fan performance
109
9.7. Outdoor fan remaining heat removal control
31
13.6. Safety device
111
9.8. Crank case heater control
31
13.7. Operating characteristics
111
9.9. Valve error
31
9.10. Pump down operation
10 INSTALLATION INSTRUCTION
13 TECHNICAL DATA
14 REPLACEMENT PARTS
92
97
112
31
14.1. Indoor unit
112
33
14.2. Outdoor unit
114
10.1. Pipe length
33
10.2. Position of the centre gravity
35
15 ELECTRONIC CIRCUIT DIAGRAM
15.1. Indoor unit
122
10.3. Indoor unit installation
36
15.2. Outdoor unit
126
10.4. Outdoor unit installation
47
15.3. Wired remote control
133
10.5. Wired remote controller installation
58
15.4. Print pattern
134
10.6. Twin systems installation
65
2
122
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
1 SERVICE INFORMATION
Notice of Address setting for NEW Duct / NEW Outdoor Unit.
The new Duct Type / New Outdoor models are possible to have address setting for twin control by automatic when main
power supply is switched on.
(Manual address setting is also possible by using Dip switch on Indoor unit P.C. board.) However, this address setting is only
possible when made proper wiring connection and also Indoor unit should be original virgin unit.
1.1.
Example of trouble at test operation
If found out as following phenomenon at test operation on site, it may have possibility of wrong address setting.
Therefore, please ensure of the address setting.
1. LCD display of wired remote control had not illuminate although the main power supply switch is ‘on’.
2. LCD display had indicated as normal illumination when power supply switch is ‘on’, however outdoor unit cannot be operated.
(But, it is necessary to take 3 to 5 minutes for outdoor unit to start from the timing of remote control ON/OFF switch is ‘on’.)
3. P.C. board had memorized wrong setting information.
a. If main power supply is switched ‘on’ with the wrong connection.
b. When changing the connection or combination of units due to re-installation etc.
• When changing the system from twin control to normal one to one system.
• When making the replacement of units as master and slave etc.
1.2.
Caution of test operation
Do not touch the remote control switch and do not change any wirings for one minute when the main power supply switch is ‘on’.
(Because the unit is having automatic address setting during the first one minute.)
1.3.
Caution during automatic address setting
When main power supply switch is ‘on’, the P.C. board will automatically memorized the connecting system.
Consequently, when initial power supply is ‘on’, there will not be interchangeability of units even of the same type and same
capacity unit. Therefore unable to connect the unit to another system.
1.4.
Operation Range
The applicable voltage range for each unit is given in “the following table”. The working voltage among the three phases must be
balanced within 3% deviation from each voltage at the compressor terminals. The starting voltage must be higher than 85% of the
rated voltage.
1.4.1.
Power Supply
Model
CUL28DBE5
L34DBE5
1.4.2.
Unit Main Power
Phase, Volts
Hz
1~220
50
1~230
50
1~240
50
Applicable Voltage
Maximum
Minimum
242
198
253
207
264
216
Indoor and Outdoor Temperature
Model 50Hz ... L28DBE5, L34DBE5
Operating
Hz
Cooling
Heating
50
50
Indoor Temp. (D.B./W.B.) (°C)
Maximum
Minimum
32/23
21/15
27/16/-
3
Outdoor Temp. (D.B./W.B.) (°C)
Maximum
Minimum
43/-15/24/18
-20/-
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
2 FEATURES
2.1.
Hide-away type
2.2.
2.1.1.
Compact design
2.2.1.
• The height has been reduced to 25 cm, the equipment can
be installed in limited spaces.
2.1.2.
Outdoor unit
Flexible installation in smaller
spaces
• Space-saving outdoor unit with the improvement of the
outdoor unit fan makes it possible to install the outdoor unit
into a smaller space where the conventional model cannot
be installed.
Versatile installation
• The indoor unit is designed in order that air will also enter
from below, for easier installation under different conditions.
• Long pipe design with a maximum piping length of 50m.
• Additional charging of refrigerant are not required for 30m
of pipe length.
• Flexible 4-way piping.
• The equipment has two drain outlets on the right and left
side for adoption to the installation conditions in the
building.
2.1.3.
Easy maintenance
• Centralized drain method gather multiple outdoor units’
drain pipes into a single drain pipe to make installation
easier and also improve appearance.
• Equipped with a filter as standard. The filter can be
removed in three directions for easier maintenance.
• Side-by-side continuous installation is possible even for
outdoor units with different capacities.
4
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
2.2.2.
• Operating efficiency is improved and energy consumption is
reduced.
Quiet, efficient design
• A host of silencing technologies achieves super-quiet
operation.
2.2.3.
• The noise-suppressing winglet fan is a result of new
research into vane design theory. The unique curved shape
suppresses the generation of vortexes, thus reduces air
flows noise.
2.3.
2.3.1.
• The unit can set for cooling even when the outdoor
temperature drops to -5°C for regular cooling condition.
• However, cooling operation at -15°C is possible in nonresidential computer rooms, etc., where the temperature is
not less than 21°C and humidity is not more than 45%.
A brand-new control method using the latest in technology
Twin operation
• Simultaneous air conditioning of wide spaces and corners is
possible. Indoor units of same horsepowers and models
can even be used in combination.
• Master unit and slave-units can be set automatically in twin
systems. No address setting is necessary.
• Multiple indoor units can be operated simultaneously with a
single remote control. Note that individual operation is not
possible.
2.3.2.
Low ambient cooling operation
Group control equipment
5
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
3 SPECIFICATION
3.1.
CS-F14DD3E5 CU-L28DBE5
ITEM / MODEL
Cooling Capacity
Heating Capacity
Refrigerant Charge-less
Standard Air Volume for High Speed
External Static Pressure
Outside Dimension (H x W x D)
Net Weight
Piping
Connection
Refrigerant
Gas
Liquid
Drain
Type, Number of Set
Starting Method
Motor
Type
Rated Output
Fan
Type, Number of Set
Motor
Type
Rated Output
Air-heat Exchanger (Row x Stage x FPI)
Refrigerant Control
Refrigerant Oil (Charged)
Refrigerant (Charged) R410A
Running
Control Switch
Adjustment
Room Temperature
Safety Devices
Main Body
kW
BTU/h
kW
BTU/h
m
m3/min
cfm
Pa
mmAq
mm
inch
kg (lbs)
mm (inch)
mm (inch)
mm
Compressor
Noise Level
kW
kW
cm3
kg (oz)
dB (A)
Power level dB
Moisture Removal
EER
COP
L/h (Pt/h)
W/W
W/W
Indoor Unit
CS-F14DD3E5 x 2
Outdoor Unit
CU-L28DBE5
7.1
24,200
8.0
27,300
30
Hi 17 x 2
Hi 48
600 x 2
1695
Hi 50
Hi 5.1
250 x 780 x 650
795 x 900 x 320
9-26/32 x 30-23/32 x 25-18/32
31-5/16 x 35-7/16 x 12-19/32
34 (75)
71 (158)
O.D Ø 12.7 (1/2) Flared Type
O.D Ø 15.88 (5/8) Flared Type
O.D Ø 6.36 (1/4) Flared Type
O.D Ø 9.53 (3/8) Flared Type
Female screw RC1 (PT1)
I.D Ø 20 x 1
Hermetic - 2P (Rotary), 1
DC - INV control
4-pole single phase brushless motor
2.0
Sirocco Fan, 2
Mix flow fan - 1
4-pole single phase induction motor 6-pole single phase induction motor
0.085 x 2
0.07
Louvre-fin type (3 x 12 x 15)
Corrugate-fin type (2 x 36 x 19)
Exp. Valve
FV50S (800)
2.35 (85)
Wired Remote Control
Thermostat
Temperature, current and pressure protection control for compressor,
Internal thermostat for FM, High pressure switch,
Current trans, Crankcase heater
Cooling : Hi 42 Lo 38
Cooling 48, Heating 50
Heating : Hi 42 Lo 38
Cooling : Hi 58 Lo 54
Cooling 64, Heating 66
Heating : Hi 58 Lo 54
4.2
3.21
3.42
1. Cooling capacities are based on indoor temperature of 27°C D.B. (80.6°F D.B.), 19.0°C W.B. (66.2°F W.B.) and outdoor air
temperature of 35°C D.B. (95°F D.B.), 24°C W.B. (75.2°F W.B.)
2. Heating capacities are based on indoor temperature of 20°C D.B. (68°F D.B.) and outdoor air temperature of 7°C D.B. (44.6°F
D.B.), 6°C W.B. (42.8°F W.B.)
ELECTRICAL DATA (50 Hz)
ITEM / MODEL
Volts
V
Phase
Power Consumption
kW
Running Current
A
Starting Current
Power Factor
A
%
*Power Factor means total figure of
Panasonic
Condition by JIS-B8615
220
230
240
Single
Single
Single
Cool
2.21
2.21
2.21
Heat
2.34
2.34
2.34
Cool
10.5
10.1
9.6
Heat
11.1
10.6
10.2
11.1
10.6
10.2
Cool
96
95
96
Heat
96
96
96
compressor, indoor fan motor and outdoor fan motor.
Power source
AC, 1~220V, 230V, 240V 50Hz
6
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
3.2.
CS-F18DD3E5 CU-L34DBE5
ITEM / MODEL
Cooling Capacity
Heating Capacity
Refrigerant Charge-less
Standard Air Volume for High Speed
External Static Pressure
Outside Dimension (H x W x D)
Net Weight
Piping
Connection
Refrigerant
Gas
Liquid
Drain
Type, Number of Set
Starting Method
Motor
Type
Rated Output
Fan
Type, Number of Set
Motor
Type
Rated Output
Air-heat Exchanger (Row x Stage x FPI)
Refrigerant Control
Refrigerant Oil (Charged)
Refrigerant (Charged) R410A
Running
Control Switch
Adjustment
Room Temperature
Safety Devices
Main Body
kW
BTU/h
kW
BTU/h
m
m3/min
cfm
Pa
mmAq
mm
inch
kg (lbs)
mm (inch)
mm (inch)
mm
Compressor
Noise Level
kW
kW
cm3
kg (oz)
dB (A)
Power level dB
Moisture Removal
EER
COP
L/h
W/W
W/W
Indoor Unit
CS-F18DD3E5 x 2
Outdoor Unit
CU-L34DBE5
10.0
34,100
11.2
38,200
30
Hi 17 x 2
Hi 98
600 x 2
3460
Hi 50
Hi 5.1
250 x 780 x 650
1340 x 900 x 320
9-26/32 x 30-23/32 x 25-19/32
52-7/8 x 35-7/16 x 12-19/32
34 (75)
110 (242)
O.D Ø 12.7 (1/2) Flared Type
O.D Ø 15.88 (5/8) Flared Type
O.D Ø 6.36 (1/4) Flared Type
O.D Ø 9.53 (3/8) Flared Type
Female screw RC1 (PT1)
I.D Ø 20 x 1
Hermetic -2P (Rotary), 1
DC - INV control
4-pole single phase brushless motor
2.6
Sirocco Fan, 2
Mix flow fan - 2
4-pole single phase induction motor 6-pole single phase induction motor
0.185 x 2
0.07 x 2
Louvre-fin type (3 x 12 x 15)
Corrugate-fin type (2 x 51 x 18)
Exp. Valve
FV50S (1200)
3.30 (116)
Wired Remote Control
Thermostat
Temperature, current and pressure protection control for compressor,
Internal thermostat for FM, High pressure switch,
Current trans, Crankcase heater
Cooling : Hi 42 Lo 38
Cooling 52, Heating 54
Heating : Hi 42 Lo 38
Cooling : Hi 58 Lo 54
Cooling 66, Heating 68
Heating : Hi 58 Lo 54
6.0
3.61
3.41
1. Cooling capacities are based on indoor temperature of 27°C D.B. (80.6°F D.B.), 19.0°C W.B. (66.2°F W.B.) and outdoor air
temperature of 35°C D.B. (95°F D.B.), 24°C W.B. (75.2°F W.B.)
2. Heating capacities are based on indoor temperature 20°C D.B. (68°F D.B.) and outdoor air temperature of 7°C D.B. (44.6°F
D.B.), 6°C W.B. (42.8°F W.B.)
ELECTRICAL DATA (50 Hz)
ITEM / MODEL
Volts
V
Phase
Power Consumption
kW
Running Current
A
Starting Current
Power Factor
A
%
*Power Factor means total figure of
Panasonic
Condition by JIS-B8615
220
230
240
Single
Single
Single
Cool
2.77
2.77
2.77
Heat
3.28
3.28
3.28
Cool
13.0
12.6
12.2
Heat
15.4
14.9
14.4
13.0
12.6
12.2
Cool
97
96
95
Heat
97
96
95
compressor, indoor fan motor and outdoor fan motor.
Power source
AC, 1~220V, 230V, 240V 50Hz
7
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
4 DIMENSIONS
4.1.
CS-F14DD3E5 CS-F18DD3E5
8
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
4.2.
CU-L28DBE5
9
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
4.3.
CU-L34DBE5
10
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
5 REFRIGERATION CYCLE
11
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
6 BLOCK DIAGRAM
6.1.
CS-F14DD3E5 CS-F18DD3E5
12
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
6.2.
CU-L28DBE5
13
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
6.3.
CU-L34DBE5
14
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
7 WIRING DIAGRAM
7.1.
CS-F14DD3E5 CS-F18DD3E5
15
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
7.2.
CU-L28DBE5
16
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
7.3.
CU-L34DBE5
17
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
8 WIRED REMOTE CONTROL OPERATING INSTRUCTIONS
8.1.
Name and function of each part
OFF/ON button
Used to start and stop the operation.
FAN SPEED button
Used to select the fan speed of high (HI), medium (MED), low
(LO) or auto (AUTO).
MODE button
Used to select the operation of AUTO, HEAT, FAN, COOL, or
DRY.
TEMP (UP/DOWN) buttons
Used to select the desired temperature.
AIR SWING (AUTO/MANUAL) buttons
Used to determined the air swing condition, either auto or
manual.
FILTER RESET button
Press to reset the “FILTER RESET” display after washing the
filter.
TEST RUN button*
REMOTE
The OFF/ON button cannot be used.
LOCAL
All wired remote control buttons can be used.
VENTILATION button*
Time/time setting display
ODOUR WASH button
Provides deodorizing function.
ECONOMY operation button
Provides Energy saving function
Check display
CHECK button
Press this button if the check display is flashing.
Fan speed display
Operation mode selection display
TIMER/CLOCK SET buttons
Used to set the timer operation and the current time.
FILTER RESET display
(Appears after the cumulative running time reaches
approximately 2,500 hours of operation.)
Operation indicator
Lights up when the unit in operation.
Temperature setting display (16°C - 31°C)
Airflow direction setting display
NOTES
• Ensure that the correct button is pressed as simultaneous pressing of the multiple buttons will not make the setting correct.
• The illustration above is for explanatory purposes only. The appearance will be different during actual operation.
• Do not operate the remote control with wet hands. Otherwise, electric shock or malfunction may occur.
• Do not press the remote control buttons with sharp object as this may damage the remote control.
• Buttons marked with * are not needed for normal operation. If one of these buttons is pressed by mistake, press the same
button once more to cancel the operation.
• When the power resumed after power failure, the unit will restart automatically with all the previous settings preserved by
the memory function. (Auto restart function)
• Buttons marked with
are not available for operation. If one of these buttons is pressed function will not be available.
18
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
8.2.
Remote Control - Display
19
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
8.3.
Remote Control - Panel
20
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
8.4.
How to set remote control day and time
• The day and time needs to be set when you turn on the power for the first time or after a long time has elapsed since the power
was last turned on.
• The day and time becomes the standard time for all the Timer operations.
• Set the day and time accurately.
• Example : Current Day is Wednesday and Current Time is 8:00.
Note:
• Press “UP button” to increase or “DOWN button” to decrease (interval 1 minute) or hold the button to change the time faster.
• If the “UP or DOWN button” is not pressed for 30 seconds during the day or time setting or if the “SELECT button” is
pressed, the setting at that moment is confirmed and setting will end.
8.5.
How To Select The Timer
• 2 types of Timer mode can be selected on the remote control.
− Daily Timer
− Weekly Timer
• These timers cannot be operated simultaneously.
• Select one of these Timers for your convenience.
How to Change the Display
• Press once to change the display from CLOCK to Timer or vice-versa.
• Press more than 3 seconds to change the display from Daily Timer to Weekly Timer or vice-versa.
21
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
CLOCK Display (To set current Day and Time)
Note:
• The above display is shown if no valid timer setting is made.
• If valid timer setting is made.
− Timer and setting will be displayed.
− If you want to check the current time and day, press “MODE button” once.
(However, after a few seconds, the display will change back to Timer
8.6.
and the setting)
Daily Timer Setting
• Display
• How to Set Daily Timer
− You can set only “ON” or only “OFF” or “ON” and “OFF” in a day.
1. Change Display
Press “MODE button” to change the display to daily timer.
2. ON-Timer, OFF-Timer and select Time
Press “SELECT button”; ON-Timer setting will be displayed.
Press “UP or DOWN button” to select the desired time, (Example: ON 9:00), then press “SET button” to confirm
the selected desired time.
Or press “CANCEL button” if you do not want any setting for ON-Timer.
Then OFF-Timer setting will be displayed.
Press “UP or DOWN button” to select the desired time, (Example: OFF 18:30), then press “SET button” to
confirm the selected desired time.
Or press “CANCEL button” if you do not want any setting for OFF-Timer.
Note:
• The setting timer will be activated everyday.
• Timer nearer to the current time will be activated first.
22
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
Final Display of Daily Timer:
8.7.
Weekly Timer Setting
• Display
• How to Set Weekly Timer
− You can set the Timer for 1 week (Monday to Sunday) with 6 programs per day.
− ON-Timer can be set together with your desired temperature. However, this temperature will be used continuously.
− Cannot set 2 programs with same time setting in a day.
− You also may select Collective - many days with same time setting or Individual
− single/one day setting.
1. Change Display
Press “MODE button” to change the display to weekly timer.
2. Select Day (please refer to next page for example of setting)
You may select Collective or Individual day setting.
• Collective day setting.
Press “SELECT button”: display will show day selection setting.
Press “UP or DOWN button” to select the day. Then press “SET button” to delete triangle mark
(deselect) or add triangle mark (select).
(Triangle mark on top of each day indicates the day to be selected).
Repeat these steps if you want to deselect or select many days.
To confirm the selected days, press the “SELECT button”.
• Individual day setting.
Press “UP or DOWN button” to select the day.
Then press “SELECT button”.
3. Select Time (please refer to next page for example of setting)
For 1st program setting.
Press “UP or DOWN button” to select ON or OFF.
Then press “SET button” to confirm.
Press “UP or DOWN button” again to select the desired time.
(If you want to set them together with your desired temperature, press “TEMP UP/DOWN button” to
select the temperature).
Then press “SET button” to confirm.
Or press “CANCEL button” if you do not want to set any time.
For 2nd ~ 6th program you may refer to the above step.
23
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
For example , if you want to set:
A - Monday to Friday: Same time, 1st program ON 9:00 & 2nd program OFF 16:00.
B - Only Wednesday: Additional 3rd program OFF 12:30 & 4th program ON 13:30.
C - Only Saturday: 1st program ON 10:00 with 20°C & 2nd program OFF 14:00.
D - Sunday: Holiday. No need to set any Timer.
• To set A (Monday to Friday - Collective day setting)
Press “SELECT button”
To select Monday to Friday, deselect Saturday and Sunday by pressing “UP or DOWN button” to Saturday, press
“SET button” (triangle mark on top of Saturday will disappear)
Follow the same step to deselect Sunday.
Ensure triangle mark appears on top of Monday ~ Friday.
− To confirm the selected days, press “SELECT button”.
To set the time, please refer to step 3. Select time at page 23.
− 1st program - select ON and desired time to 9:00.
2nd program - select OFF and desired time to 16:00.
3rd ~ 6th program - press “CANCEL button”.
• To set B (Wednesday - Individual day setting)
− Press “UP or DOWN button” to select WED (Wednesday).
Then press “SELECT button”.
To set the time, please refer to step 3. Select time at page 23.
− 1st program - press “SET button” twice (confirm ON and 9:00)
2nd program - also press “SET button” twice. (Confirm OFF and 16:00)
3rd program - select OFF and desired time to 12:30
4th program - select ON and desired time to 13:30
5th ~6th program - press “CANCEL button”
• To set C (Saturday - Individual day setting)
− Follow the same step as above.
To set the time, please refer to step 3. Select time at page 23.
− 1st program - select ON, desired time to 10:00 and desired temperature to 20°C.
2nd program - select OFF and desired time to 14:00.
3rd ~ 6th program - press “CANCEL button”.
− Final Display for Weekly timer may show as:
(Display is showing, 9:00 ON - Timer on Wednesday will be activated next because it is nearest the current
day/time.)
Note:
• Timer that has setting nearest to current time and day will be activated first.
• To check the setting timer, press “SELECT button”, then “UP or DOWN button” to select day. The display will show each
program for the selected day.
• To reset the setting for all, press “SELECT button”, then ensure all day setting with triangle mark. Then press “CANCEL
button” for all the programs.
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9 OPERATION CONTROL
9.1.
Operation mode
1. Thermostat control
2. Depend on differences between room temperature and setting temperature, Compressor running frequency will be decided and
start operation.
Temperature differences become same as below table, then thermostat is off.
Temperature Differences
Indoor type
Cool mode
Dry mode
Heat mode
Cassette
-1.5
-2.5
3.5
Ceiling
-1.5
-2.5
2.5
Duct D1
-2.0
-3.0
2.5
Duct D2
-2.0
-3.0
2.5
Unit: °C
Duct D3
-2.0
-3.0
2.5
3. Select indoor temperature thermostat
When connected to wired remote controller, either indoor unit thermostat or remote controller thermostat is available, using
remote control setting.
9.2.
Compressor start control
• When the compressor start, compressor frequency will be fixed at lower level for certain time, to follow the below table, due to
avoid the compressor oil discharge.
• Judging from compressor discharge temperature, decide the start condition to select either cool start control, or warm start
control.
Discharge temp. [°C]
Start control
>15°C
Warm start
15°C
Cool start
Warm start : set 1 → *set 5 → normal control
Cool start : set 1 → set 2 → set 3 → set 4 → *set 5 → normal control
• Note
− Frequency at *set 5 = frequency calculated by normal control
− In case of frequency at set n (set 1, set 2 or set 3) excess the frequency at set 5 in cool condition, skip from set n (set 1,
set 2 or set 3) to set 4 and transfer to set 5.
9.3.
9.3.1.
Cooling operation
Cool indoor fan control
• Fan speed manual
Operation start at hi speed, or medium speed, or low speed set by remote control.
• Fan speed auto
When operation start, or shifting to thermostat ON condition from thermostat OFF condition, odour cut operation (refer odour
cut operation page for detail), after thermostat ON condition, indoor fan operate as below control.
When 1st thermostat on condition from operation start, fan speed is hi (same as manual fan speed), after 2nd thermostat on
condition, fan speed change to medium speed (same as manual medium fan speed).
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9.3.2.
Odour cut control
• When cool or dry mode operation start, select odour cut mode or fan auto mode, by remote control, operation start at odour
wash mode when compressor start or shift to thermostat on from thermostat off.
• Odour cut operation is under below condition.
Operation mode
Odour wash setting
Fan setting
Cool or dry mode
Setting
No setting
Odour cut
Odour cut
Odour cut
-
Auto
Manual
• Odour cut operation is to remove the odour generated at indoor heat exchanger to use the drain water come out from indoor
heat exchanger.
9.3.3.
Cool powerful operation
• When cool or dry mode operation start, temperature differences between room temperature and setting temperature is more
than 5 K, setting temperature shift to 2 K down.
• (But when temperature after shifting is less than 16°C, setting temperature is 16°C = no change)
• Micro computer judge that required indoor load is bigger than calculation base from temperature differences between room
temperature and setting temperature, then increase the compressor frequency compared to normal to cool down indoor side
immediately.
• Those kind of operation complete after 30 minutes when cool mode operation start.
9.3.4.
Freezing prevention control
• During cool or dry mode operation, if indoor evaporator temperature is going down, freezing prevention control is operated.
• Detail of Freezing prevention control is as follows;
Indoor evaporator temperature area is divided into 5 zones, which consist of stop zone, down zone, no change zone, up zone,
and recovery zone. When indoor evaporator temperature is going into each zone, compressor frequency change by following
the below table.
Recovery zone
Up zone
No change zone
Down zone
Stop zone
Release freezing prevention operation
Fan motor speed step up
Operation no change
Reduce the compressor frequency
(check for 3 min, max 3 times)
If continue for 6 min, compressor stop
(for 3 min after stop, compressor can be started due to restart delay control)
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9.3.5.
Dew form prevention control
• During cool or dry operation, if outdoor temperature is less than 30°C, and indoor fan speed is low or auto setting, indoor heat
exchanger temperature become lower, dew form prevention control start to prevention dew form at indoor discharge grill.
• Indoor evaporator temperature area is divided into 4 zones, which consist of, down zone, no change zone, up zone, and
recovery zone.
• When indoor evaporator temperature is going into each zone, change compressor frequency by following the below table.
Recovery zone
No change zone
Down zone
9.3.6.
Release dew form prevention operation
Continue check the indoor heat exchanger temperature
Reduce the compressor frequency
(check for 3 min, max 3 times)
Cooling low temperature protection control
• During cooling, or dry operation, if outdoor temperature is less than -15°C.
− And thermostat on condition continue for 15 min, compressor stop.
− After 3 min waiting (restart delay), if thermostat is on, compressor restart.
9.4.
Heating mode operation
9.4.1.
Heating indoor fan control
Fan speed manual
• Fan speed [Hi] [Me] [Lo] set by remote controller.
• However, when operation start, or during operation, fan speed control is limited to due to prevent a cold draft, for example, when
heating operation start.
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Fan speed auto
• When operation start, or during operation, fan speed control by detecting indoor heat exchanger as follows:
9.4.2.
Hot start control
• When heating operation start, hot start control carry out.
• During hot start operation, [PREHEAT] displayed at the wired remote controller.
• For wireless remote controller, [POWER LED] is blinking at the receiver of indoor unit. Indoor fan stop and louver angle fixed
to upper side in spite of any setting of remote controller. When indoor heat exchanger temperature increase, or 4 minutes past
after operation start, hot start control finish and shift to normal fan control.
9.4.3.
Cold draught prevention control
• This control is to prevent cold draught during heating mode operation.
• The operation will start when the compressor is OFF (thermostat off) during heating operation.
• Initially, the AC indoor fan motor will operate at Lo speed for 2 minutes.
• After this, the AC indoor fan stops for 3 minutes and then operates at Lo speed for 10 seconds. And this operation repeats as
cold draught prevention control is on.
• The cold draught prevention control stops when the compressor is ON (thermostat on).
9.4.4.
Heating powerful operation
• When heating mode operation start, temperature differences between setting temperature and room temperature is more than
5 K, setting temperature increase 2 K and operation start.
(however, setting temperature after shifting is more than 31°C, setting temperature fixed 31°C.)
• Due to this control, micro computer judge indoor heat loss is big and increase compressor frequency compare to normal
condition, then heat up indoor room quickly.
• This control will be finished after 60 min or thermostat is off.
9.4.5.
Defrost control
• During heating operation at outdoor low temperature condition, defrost operation start timely to melt the ice formed on outdoor
heat exchanger.
• When heating operation accumulated time is time up, and both outdoor temperature and outdoor unit heat exchanger
temperature is less than setting temperature for 5 minutes. When defrost temperature is more than setting temperature, defrost
operation finish.
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• During defrost operation, in spite of any change of remote controller, indoor fan stop.
• During defrost operation, [DEFROST] is displayed at wired remote controller, hot start operate after defrost operation finish.
• The defrost temperature (DEF_Th) depends on outdoor ambient temperature.
Outdoor air temp. (°C)
Tout -3°C
-3°C > Tout -10°C
Tout < -10°C
9.4.6.
Maximum defrost time
10min 30sec
10min 30sec
10min 30sec
DEF_Th (°C)
11°C
5 °C
3°C
Heating high temperature protection
• During heating operation, when outdoor temperature is more than 35°C for 15 minutes, compressor stop to protect compressor.
• After 3 minutes (re-start delay control) waiting, if thermostat on condition, outdoor unit re-start.
9.5.
Odour removing operation
• During stop condition, or cooling operation, when pushing the [ODOUR] button for 3 seconds, operation change to the odour
removing operation.
• Operation detail is as follows;
Fan mode operation for 180 seconds, then refrigerant cycle change to heating mode for 720 seconds, to heat up (dry) the
indoor unit. Compressor frequency and indoor fan controlled to maintain the indoor heat exchanger temperature 41°C.
• Indoor fan revolution is fixed at Lo speed.
• After that, fan mode operation continue for 360 seconds, then odour removing operation finish.
• During odour removing operation, [ODOUR] sign is blinking at LCD display panel of wired remote controller, when pushing the
operation button, or [ODOUR] button, odour removing operation finish and set the odour cut operation.
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9.6.
Energy save operation
• During cooling operation, or heating operation, when pushing the [ECONOMY] button in the wired remote controller, energy
save operation start and [ECO] sign is displayed at LCD display panel of wired remote controller ([ECONOMY] sign is displayed
at LCD display panel of wireless remote controller).
• When energy save operation start and temperature differences is +1K (=indoor suction temperature - setting temperature) for
cooling operation, or -1K for heating operation for 30 minutes, thermostat OFF point shift to 0.5K.
(This means thermostat OFF point shift up +0.5K for cooling, thermostat OFF point shift down -0.5K for heating)
From this control, it is judged that indoor side heat loss is small, then reduce compressor frequency. This means energy save
operation.
• Those kind of operation continue maximum 4 times. If temperature is out of range (thermostat off +1K for cooling, thermostat
off -1K for heating), operation release from energy save control. But energy save control cannot be released by pushing
ON/OFF button of remote controller, but still effective. When pushing [ECONOMY] button once again, energy save control
released.
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9.7.
Outdoor fan remaining heat removal control
• When compressor stop, outdoor fan operate for 1 minute to remove the remaining heat.
9.8.
Crank case heater control
• Crank case heater power is on to prevent the refrigerant solving into compressor oil inside of the compressor shell at cold
condition.
• When below conditions are satisfied, crank case heater power on.
− Compressor stop
− Outdoor temperature
15°C
− Compressor discharge temperature
9.9.
15°C
Valve error
• When install the air conditioner unit and try to start forced operation (cooling mode) after completion the installation, in case of
3 way valve close, valve error displayed at the wired remote controller to protect the compressor.
• This error can be detected to satisfy below condition, when power is on at first time and within 7 minutes from compressor start.
(However, it is judged that power on is the first time until compressor start operating continuously for 7 minutes)
− Indoor heat exchanger temperature when compressor start - 3K < current indoor heat exchanger temperature for 5 minutes
− Indoor suction temperature - 3K < current heat exchanger temperature for 5 minutes.
9.10. Pump down operation
• When pushing the [PUMP DOWN] button on the outdoor PCB for 1 second, pump down operation start. Detail of pump down
operation is shown at below table.
• During pump down operation, push the [PUMP DOWN] button once again for 1 second, pump down operation stop.
• After 600[Sec] past, pump down operation stop.
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10 INSTALLATION INSTRUCTION
10.1. Pipe length
10.1.1. Correction of capacities
Correction of capacities according to the connecting pipe length.
The data of rated capacities (marked on the name plate) are based on 7.5 metres connecting pipe and horizontal
installation.
Model No.
Liquid /
High
HIDE
AWAY
TYPE
R
4
1
0
A
Piping Size / Length & Elevation
Piping size
Piping
Piping
length (A) elevation
(B)
Valve
Gas /
Valve
Max (m)
Max (m)
Low
Piping
elevation
(C)
Max (m)
Piping
Chargeless
Add
Refrigerant
Max (m)
(g/m)
20/2 set
30/2 set
refer note
CS-F14DD3E5
CS-F18DD3E5
(Lo)
6.35
3-ways
12.7
3-ways
50/2 set
30/2 set
Note :
Piping elevation B = outdoor unit installed at top
Piping elevation C = outdoor unit installed at bottom
• Calculation 1
In case of CU-L28, 34DBE5
When pipe length exceed 30m calculated by formula 1, adding refrigerant amount should be calculated by formula 2. If
calculation result is less than 30m, it is not necessary to add refrigerant.
Pipe length = main pipe + (branch pipe La + branch pipe Lb)/2.78...formula 1
Add refrigerant = (main pipe + (branch pipe La + branch pipe Lb)/2.78-30) * 50...formula 2
• Calculation 2
In case of CU-L43, 50DBE8
When pipe length exceed 30m calculated by formula 3, adding refrigerant amount should be calculated by formula 4. If
calculation result is less than 30m, it is not necessary to add refrigerant.
Pipe length = main pipe + branch pipe La + branch pipe Lb...formula 3
Add refrigerant = (main pipe + branch pipe La + branch pipe Lb-30) * 50...formula 4
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10.1.2. Refrigerant additional charge
• The piping length exceeds 30 metres.
APPLICABLE FOR ALL MODELS
Before shipment, this air conditioner is filled with the rated amount of refrigerant subject to 30m piping length. (The rated
amount of refrigerant is indicated on the name plate.) But when the piping length exceeds 30m, additional charge is required
according to the following table.
Example :
CS-F24DD3E5
In case of 31m long pipe (one-way), the amount of refrigerant to be replenished is: (31 - 30) x 50 = 50g
Model Name
CU-L24DBE5
CU-L28DBE5
CU-L34DBE5
CU-L43DBE5
CU-L50DBE8
Liquid piping
(dia.mm)
9.52
9.52
9.52
9.52
9.52
Standard piping specification
Gas piping
Gas charge(dia.mm)
less length (m)
15.88
30
15.88
30
15.88
30
15.88
30
15.88
30
Additional gas
volume (g/m)
50
50
50
50
50
10.2. Position of the centre gravity
MODEL NAME
CU-L24DBE5
CU-L28DBE5
CU-L34DBE5
CU-L43DBE5
CU-L50DBE8
OUTSIDE DIMENSIONS
WIDTH (mm)
DEPTH (mm)
HEIGHT (mm)
900
320
795
900
320
795
900
320
1340
900
320
1340
900
320
1340
35
NET WEIGHT
kg
71
71
110
110
105
CENTRE OF GRAVITY
X (mm)
Y (mm)
Z (mm)
560
150
320
560
150
320
560
150
510
560
150
510
560
150
510
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
10.3. Indoor unit installation
DUCT TYPE AIR CONDITIONERS INSTALLATION INSTRUCTIONS
Precautions in terms of safety
Carry out installation work with reliability after thorough reading of this “Precautions in terms of safety”.
Warnings and
Cautions . Those that have much chances for
• Precautions shown here are differentiated between
leading to significant result such as fatality or serious injury if wrong installation would have been carried out are listed compiling
Warnings .
them especially into the column of
However, even in the case of items which are listed in the column of
to significant result depending on the situations.
Cautions , such items also have a chance for leading
In either case, important descriptions regarding the safety are listed, then observe them without fail.
• As to indications with illustration
This mark means “Caution” or “Warning”.
This mark means “Earth”.
• After installation work has been completed, do not only make sure that the unit is free from any abnormal condition through the
execution of trial run but also explain how to use and how to perform maintenance of this unit to the customer according to the
instruction manual.
In addition, request the customer to keep this manual for installation work together with the instruction manual.
Warnings
If installing inside a small room, measures should be taken to
prevent refrigerant levels from building up to critical
concentrations in the event of a refrigerant leak occurring.
Please discuss with the place of purchase for advice on what
measures may be necessary to prevent critical concentrations
being exceeded. If the refrigerant leaks and reaches critical
concentration levels, there is the danger that death from
suffocation may result.
As to installation, request the distributor or vendor to perform it.
Securely attach the protective covers for the outdoor unit
Imperfection in installation caused by that having been carried
connection cables and power cord so that they do not lift up
out by the customer himself may lead to water leakage, electric
after installation. If the covers are not properly attached and
shock, fire, etc.
installed, the terminal connections may overheat, and fire or
electric shock may result.
Carry out the installation work with reliability according to this
Switch off all supplies before accessing any electrical part.
manual for installation work.
Imperfection in installation leads to water leakage, electric
shock, fire, etc.
Carry out the installation work with reliability on the place that
If refrigerant gas escapes during installation, ventilate the
can bear the weight of this unit sufficiently. Insufficient strength
affected area. If the refrigerant gas comes into contact with
leads to injury due to falling of the unit.
sparks or naked flames, it will cause toxic gases to be
generated.
Carry out predetermined installation work in preparation for
Once installation work is completed, check that there are no
strong wind such as typhoon, earthquake.
refrigerant gas in the room that can come into contact with
Imperfection in installation work may lead to accidents arisen
sparks or flames from a fan heater, stove or kitchen range,
from overturn, etc.
which will cause toxic gases to be generated.
The unit must be installed in accordance with applicable national
When performing piping work do not mix air except for specified
and local regulations.
refrigerant (R410A) in refrigeration cycle. It causes capacity
Any electrical work should only be carried out by qualified
down, and risk of explosion and injury due to high tension inside
technician and use exclusive circuits without fail.
the refrigerant cycle.
Presence of insufficient capacity in power circuit or imperfection
in execution leads to electric shock, fire, etc.
The appliance must be installed by technician, who takes into
account the requirements given by ISO5149 or eventual
equivalent requirements.
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CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
Warnings
Wiring shall be connected securely using specified cables and
fix them securely so that external force of the cables may not
transfer to the terminal connection section.
Imperfect connection and fixing leads to fire, etc.
Cautions
Carry out Earthing work.
Do not connect the Earth return to the gas pipe,
water line pipe, lightning rod and telephone lines.
Imperfection in Earth return may lead to electric
shock.
Do not install the unit at the place where the possibility of
inflammable gas leakage exists. If such gas leakage should arise
and the gas builds up around the unit, such situation may lead to
ignition.
Drain piping should be made to ensure secure drainage
according to the manual for installation work and carry out the
thermal insulation to prevent the occurrence of condensation.
Imperfection in piping work leads to water leakage and may
cause the house and property, etc. to become wet
Position the indoor unit, outdoor unit, power cords and
indoor/outdoor unit connection cables in a way so that they are
at least 1 meter away from televisions and radios.
This is to avoid problem such as interference with picture and/or
sound. (However, note that depending on the electromagnetic
wave conditions, interference may still occur even if the
separation distance is more than 1 meter.)
Mounting of the earth leakage circuit breaker is required.
Omission in mounting of the earth leakage circuit breaker may
lead to electric shock.
10.3.1. Accessories packed in the indoor unit container
NO.
1
2
3
4
5
6
7
8
Parts name
Thermal insulator for refrigerant pipe
Hose clip for thermal insulator
M10 Flange washer
M10 Flat washer
Thermal insulator for drainage hole
Duct flange R
Duct flange L
Screws
Q’ty
2
5
4
4
1
1
1
4
• (6) and (7) should be installed when the duct will be
installed at the return hole.
10.3.2. Selecting the location for the indoor unit
Provide a check port on the piping side ceiling for repair and maintenance.
• Install the indoor unit once the following conditions are satisfied and after receiving the customer approval.
1. The indoor unit must be within a maintenance space.
2. The indoor unit must be free from any obstacles in path of the air inlet and outlet, and must allow spreading of air throughout
the room.
*If the height from the floor to ceiling exceeds three meters, air flow distribution deteriorates and the effect is decreased.
3. The installation position must be able to support a load four times the indoor unit weight.
Warnings
4. The indoor unit must be away from heat and steam sources, but avoid installing it near an entrance.
5. The indoor unit must allow easy draining.
6. The indoor unit must allow easy connection to the outdoor unit.
7. Place the indoor unit easy water drainage. (Suitable dimension “H” is necessary to get slop to drain as figure.)
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8. The indoor unit must be from at least 3m away from any noise-generating equipment. The electrical wiring must be shielded
with a steel conduit.
9. If the power supply is subject to noise generation, add a suppressor.
10. Do not install the indoor unit in a laundry. Electric shocks may result.
Note
• Thoroughly study the following installation locations.
1. In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo fan, the fin
of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying, dispersing of water drops,
drain pump malfunction, etc.
In these cases, take the following actions:
− Make sure that the ventilation fan for smoke-collecting hood on a cooking table has suffcient capacity so that it draws
oily steam which should not flow into the suction of the air conditioner.
− Make enough distance from the cooking room to install the air conditioner in such place where it may not suck in oily
steam.
2. Avoid installing the air conditioner in such circumstances where cutting oil mist or iron powder exist especially in
factories, etc.
3. Avoid places where inflammable gas is generated, flows-in, contaminated, or leaked.
4. Avoid places where sulphurous acid gas or corrosive gas can be generated.
5. Avoid places near high frequency generators.
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10.3.3. Installation of indoor unit
POSITION OF SUPENSION BOLT
• Apply a joint-canvas between the unit and duct to absorb unnecessary vibration.
• Install the unit learning to a drainage hole side as a figure for easy water drainage.
INSTALLATION OF DUCT
1. The duct of the air inlet could be installed by the three situations as shown in the illustration below (a) ~ (c).
Setting the filter:
Case of (a): Reverse the filter and not install the duct of the air inlet.
Case of (b): Remove the filter (local arrangement) and install the duct of the air inlet.
Case of (c): Change the panel bottom to install the duct of the air inlet.
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2. The panel bottom could be changed into the air inlet (case of (c)) as shown in the illustration below.
3. When the duct of air inlet will be installed, install the duct flange side R & L to the air inlet with accessories as shown in the
illustration.
4. The filter could be removed from any one of three directions as shown in the illustration below.
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10.3.4. Refrigerant piping
• Refrigerant is charged to the outdoor unit. For details, see the manual for installation work of outdoor unit. (Additional charging,
etc.)
1. Brazing for piping.
a. Execute brazing before tightening the flare nut.
b. Brazing must be executed while blowing nitrogen gas.
(This prevents generation of oxidized scale in copper
pipe.)
2. When there is a lot of brazings for long piping, install a
strainer midway of the piping. (The strainer is locally
supplied.)
3. Use clean copper pipe with inner wall surface free from mist
and dust. Blow nitrogen gas or air to blow off dust in the
pipe before connection.
4. Form the piping according to its routing. Avoid bending and
bending back the same piping point more than three times.
(This will result in hardening of the pipe).
• Confirm the red mark of the union (thin side) is always at
lower direction after connecting piping.
5. After deforming the pipe, align centers of the union fitting of
the indoor unit and the piping, and tighten them firmly with
wrenches.
6. Connect pipe to the service valve or ball valve which is
located below the outdoor unit.
7. After completed the piping connection, be sure to check if
there is gas leakage in indoor and outdoor connection.
Vaccum drying
After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit.
The vacuum drying must be carried out by using the service ports of both the liquid and gas side valves.
CAUTION
Use two wrenches and tighten with regular torque.
Flare nut fastening torque N.m (kgf.cm)
ø6.35 mm 18 (180) ø12.7 mm 55 (560) ø19.05 mm
100
(1020)
CS-F14~18DD3E5
CS-F24~50DD3E5
ø9.52 mm 42 (430) ø15.88 mm 65 (660)
10.3.5. Indoor unit drain piping
• The unit has two drainage holes at both side.
The drainage hole without connection needs seal and thermal
insulation with accessories.
• Always lay the drain with downward inclination (1/50 to 1/100).
Prevent any upward flow or reverse flow in any part.
• 5mm or thicker formed thermal insulator shall always be
provided for the drain pipe.
41
Liquid side piping
ø6.35
ø9.52
Gas side piping
ø12.7
ø15.88
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
10.3.6. Heat Insulation
Caution
Be sure to perform heat insulation on the drain, liquid and gas piping. Imperfection in heat insulation work leads to water leakage.
1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C).
2. Precautions in high humidity circumstance.
This air conditioner has been tested according to the “JIS Standard Conditions with Mist” and have been confirmed that there
are no faults. However, if it is operated for a long time in high humid atmosphere (dew point temperature: more than 23°C),
water drops are liable to fall. In this case, add heat insulation material according to the following procedure:
• Heat insulation material to be prepared... Adiabatic glass wool with thickness 10 to 20mm.
• Stick glass wool on all air conditioners that are located in ceiling atmosphere.
• In addition to the normal heat insulation (thickness: more than 8mm) for refrigerant piping (gas piping: thick piping) and drain
piping, add a further of 10mm to 30mm thickness material.
Wall seal
• When the outdoor unit is installed on a higher position than the indoor unit, install the trap so as not to instill rain water into
the wall by transmitting in piping.
• Stuff the space among piping, the electric wire, and the drain hose with “Putty” and seal the penetration wall hole.
Make sure that rain water do not instill into the wall.
*Put the incision at the trap part of the heat insulator (for water drain)
3. The duct connection of the air outlet needs thermal insulation.
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10.3.7. Electrical wiring
As to main power source and cable size of outdoor unit, read the installation manual attached to the outdoor unit.
Warning
Caution
Caution
Warning
The units must be installed in accordance with applicable national and local regulations.
The units installed by a professional installer must be supplied from a dedicated electrical circuit.
All electrical work must be carried out by a qualified technician according to proper technical standards for electrical work and
according to installation manual for installation work.
If circuit with insufficient capacity are used, or if electrical work is not carried out properly, electric shocks or fire may result.
Be sure to install a current leakage breaker or circuit breaker to the main power supply, otherwise electric shocks may result.
Be sure to connect the unit to secure earth connection. (with an earth resistance of 100 Ω or less)
If the earthing work is not carried out properly, electric shocks may result.
Wiring shall be connected securely using specified cables and fix them securely so that external force of the cables may not
transfer to the terminal connection section. Imperfect connection and fixing leads to fire, etc.
1. Select a power source that is capable of supplying the current required by the air conditioner.
2. Feed the power source to the unit via a distribution switch board designed for this purpose, the switch should disconnected all
poles with a contact seperation of at least 3 mm.
3. Always ground the air conditioner with a grounding wire and screw to meet the LOCAL REGULATIONS.
4. Be sure to connect the wires correctly to terminal board with connecting the crimp type ring terminal to the wires.
5. Be sure to turn off the main power before installing and connecting the remote controller.
Note
If momentarily turning on the power supply for both the indoor and outdoor units, do not turn the power off after at least 1 minute has
passed. (For the system’s automatic setting.)
Turning off the power supply on the way may cause an abnormal operation.
• Use the standard power cord for Europe (such as H05RN-F or H07RN-F which conforms to CENELEC (HAR) rating
specifications) or use the cables based on IEC standard. (245IEC57, 245IEC66)
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CONNECTING THE WIRES TO THE CONTROL BOX
• Remove two screws ,remove the control box cover, and
then connect the wires by following the procedure given in
the illustration.
<INDOOR UNIT>
• Remove the control box for electrical connection between
).
the indoor and outdoor unit. (Remove two screws
• Use the cord clamper to fix the cord.
Caution
Make sure that screws of the terminal are free from Looseness.
Fastening torque
M4... 118N.cm (12kgf.cm)
M5... 196N.cm (20kgf.cm)
10.3.8. Settings
*Do not operate the remote controller within 1 minute after turning on the power of the indoor unit.
*When using group control with the standard type, at least 1 unit must be set at No.1 at the indoor unit.
*Check the settings of the indoor unit in a case where there are no display at remote controller. If there is no problem to the settings,
either group control or standard type should be set at No.16 at the indoor unit before turning the power on again.
• All sets in the group which uses the same remote controller thermistor settings can be controlled by the same remote controller
thermistor.
• Up to a maximum of 16 indoor units can be connected at the time of group control. (Do not connect heat pump unit with cooling
only unit.)
• Indoor unit No. will be set automatically at the time of group control. However, which indoor unit uses which number is unknown.
Indoor unit No. is also possible to be set manually with DIP switches. Since manual address setting has priority to automatic
address setting. To perform automatic address setting after doing manual setting, turn off all DIP switches from No.1 to No.4,
and then stop the operation. Then press three switches such as [AIR SWING AUTO] [MODE] [A/C No.] at the same time.
(Do not use manual address setting and automatic address setting together.)
• Centralized control is possible for master unit and slave unit at the time of group control.
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(Remote Controller address setting)
(Refer to the Installation Manual which is provided with the remote controller for details.)
• Two remote controllers (including the wireless remote controller) can be connected. However, remote control thermistor setting is not
possible.
• As for [master/slave] setting of remote controller, the automatic setting and manual setting are possible. Since manual setting is priority.
• Two remote controllers, which both are wireless, cannot be connected.
10.3.9. As for timer output
• Connect the timer cord to connector (CN-TIMER) on print circuit board.
10.3.10. Precautions in test run
• The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner may not operate.
• Test operation can be carried out using the remote control unit or at the outdoor unit. (If carrying out test operation at the
outdoor unit, refer to “TEST OPERATION” in the outdoor unit installation manual.)
• If using the remote control unit to carry out test operation, follow the procedure given below.
• First, press the OFF/ON (
) button.
• Then press the TEST RUN button within 1 minute of pressing the OFF/ON (
) button.
• Next, select the operation modes.
• The temperature of the indoor unit pipes will be shown on the temperature setting display. (At the start of the test
operation, it may take up to 1 minute for air conditioner number, switching time and other displays to appear.)
• After operation modes have been selected, stop the compressor for a moment.
• Press the OFF/ON (
) button of the TEST RUN button once more to cancel test operation mode.
NOTE 1
These units are equipped with connection error prevention circuits. If the units do not operate, it is possible that the connection
error prevention circuits have been operated. In such cases, check that the Indoor/outdoor unit connection wire (connected to
terminals
,
and
) is connected correctly. If they are connected incorrectly, connect them correctly. Normal operation
should then commence.
NOTE 2
Do not short the remote control unit wires to each other. (The protection circuit will be activated and the units will not operate.)
Once the cause of the short is eliminated, normal operation will then be possible.
NOTE 3
When running the units in heating mode during test operation, be sure to run the units in cooling mode first before selecting
this mode. If heating mode is selected first, it may cause problems with operation of the compressor. (Heat pump model only.)
NOTE 4
Test operation should be carried out for a minimum of 5 minutes. (Test operation will be cancelled automatically after 30
minutes.)
NOTE 5
Test operation mode should always be cancelled once test operation itself has been completed.
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10.3.11. Check the following items when installation is complete
• After completing work, be sure to measure and record trial run properties, and store measuring data, etc.
• Measuring items are room temperature, outside temperature, suction temperature, blow out temperature, wind velocity, wind
volume, voltage, current, presence of abnormal vibration and noise, operating pressure, piping temperature, compressive
pressure, airtight pressure.
• As to the structure and appearance, check the following items.
Is
Is
Is
Is
circulation of air adequate?
draining smooth?
heat insulation complete (refrigerant and drain piping)?
there any leakage of refrigerant?
Is remote controller switch operated?
Is there any faulty wiring?
Are the terminal screws loosened?
M3... 69-98N.cm {7-10kgf.cm}
M4... 157-196N.cm {16-20kgf.cm}
M5... 196-245N.cm {20-25kgf.cm}
10.3.12. Hand over
• Teach the customer the operation and maintenance procedures, using the operation manual (air filter cleaning, temperature
control, etc.)
As to parts to be sold separately
• With regards to installation of the parts sold separately, follow the installation manual which is provided with the parts sold
separately.
As for work specifications of the outdoor unit, read the OUTDOOR UNIT INSTALLATION MANUAL attached to the outdoor
unit.
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10.4. Outdoor unit installation
AIR CONDITIONERS OUTDOOR UNIT INSTALLATION INSTRUCTIONS
Precautions in terms of safety
Carry out installation work with reliability after thorough reading of this “Precautions in terms of safety”.
Warnings and
Cautions . Those that have much chances for
• Precautions shown here are differentiated between
leading to significant result such as fatality or serious injury if wrong installation would have been carried out are listed compiling
Warnings .
them especially into the column of
However, even in the case of items which are listed in the column of
to significant result depending on the situations.
Cautions , such items also have a chance for leading
In either case, important descriptions regarding the safety are listed, then observe them without fail.
• As to indications with illustration
This mark means “Caution” or “Warning”.
This mark means “Earth”.
• After installation work has been completed, do not only make sure that the unit is free from any abnormal condition through the
execution of try run but also explain how to use and how to perform maintenance of this unit to the customer according to the
instruction manual.
In addition, request the customer to keep this manual for installation work together with instruction manual.
Warnings
If installing inside a small room, measures should be taken to
prevent refrigerant levels from building up to critical
concentrations in the event of a refrigerant leak occurring.
Please discuss with the place of purchase for advice on what
measures may be necessary to prevent critical concentrations
being exceeded. If the refrigerant leaks and reaches critical
concentration levels, there is the danger that death from
suffocation may result.
As to installation, request the distributor or vendor to perform it.
Securely attach the protective covers for the outdoor unit
Imperfection in installation caused by that having been carried
connection cables and power cord so that they do not lift up
out by the customer himself may lead to water leakage, electric
after installation. If the covers are not properly attached and
shock, fire, etc.
installed, the terminal connections may overheat, and fire or
electric shock may result.
Carry out the installation work with reliability according to this
Switch off all supplies before accessing any electrical part.
manual for installation work.
Imperfection in installation leads to water leakage, electric
shock, fire, etc.
Carry out the installation work with reliability on the place that
If refrigerant gas escapes during installation, ventilate the
can bear the weight of this unit sufficiently. Insufficient strength
affected area. If the refrigerant gas comes into contact with
leads to injury due to falling of the unit.
sparks or naked flames, it will cause toxic gases to be
generated.
Carry out predetermined installation work in preparation for
Once installation work is completed, check that there are no
strong wind such as typhoon, earthquake.
refrigerant gas in the room that can come into contact with
sparks or flames from a fan heater, stove or kitchen range,
Imperfection in installation work may lead to accidents arisen
from overturn, etc.
which will cause toxic gases to be generated.
The unit must be installed in accordance with applicable national
When performing piping work do not mix air except for specified
and local regulations.
refrigerant (R410A) in refrigeration cycle. It causes capacity
down, and risk of explosion and injury due to high tension inside
Any electrical work should only be carried out by qualified
technician and use exclusive circuits without fail.
the refrigerant cycle.
Presence of insufficient capacity in power circuit or imperfection
in execution leads to electric shock, fire, etc.
The appliance must be installed by technician, who takes into
account the requirements given by ISO5149 or eventual
equivalent requirements.
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Warnings
Wiring shall be connected securely using specified cables and
fix them securely so that external force of the cables may not
transfer to the terminal connection section.
Imperfect connection and fixing leads to fire, etc.
Cautions
Carry out Earthing work.
Do not connect the Earth return to the gas pipe,
water line pipe, lightning rod and telephone lines.
Imperfection in Earth return may lead to electric
shock.
Do not install the unit at the place where the possibility of
inflammable gas leakage exists. If such gas leakages should arise
and the gas builds up around the unit, such situation may lead to
ignition.
Drain piping should be made to ensure secure drainage
according to the manual for installation work and carry out the
thermal insulation to prevent the occurrence of condensation.
Imperfection in piping work leads to water leakage and may
cause the house and property, etc. to become wet
Position the indoor unit and outdoor unit, power cords and
indoor/outdoor unit connection cables in a way so that they are
at least 1 meter away from televisions and radios.
This is to avoid problem such as interference with picture and/or
sound. (However, note that depending on the electromagnetic
wave conditions, interference may still occur even if the
separation distance is more than 1 meter.)
Mounting of the earth leakage circuit breaker is required.
Omission in mounting of the earth leakage circuit breaker may
lead to electric shock.
10.4.1. Accessories supplied with outdoor unit
• The following parts are supplied as accessories with each outdoor unit.
Check that all accessory parts are present before installing the outdoor unit.
Part name
Protective
bushing
Q’ty
2
Banding
strap
3
Diagram
Application
For protecting electrical
wires
Part name
Drain elbow AS
For tying electrical wires
together
Heat pump-types only
Q’ty
Diagram
Application
1
For connecting the drain
pipe (with ring seat)
10.4.2. Before installation work
• This product is using new refrigeration (R410A). The basic way of installation work is the same as usual, but water and
impurities should be controlled more strictly than before due to characteristic of refrigerating machine oil. Therefore, selection
of materials to use and processing, storing and brazing need appropriate construction and control.
1. Tools and materials
There are tools and materials for both new refrigeration and usual refrigeration you can use together and for either two of
them you can use. Use the below for new refrigeration.
− Vacuum pump (with back flow preventor system)
− Gas leakage detection warning decive
− Gauge manifold
− Charge hose
2. Installation work
a. Brazing work
Brazing work needs replacing air inside pipe with nitrogen gas in order to prevent oxidization scale from occurring. This
is called nitrogen replacement, and one of very important work in brazing refrigerant piping. (Oxidation preventive is not
possible to use)
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b. Prevention measure for refrigerant piping
Prevention measure for refrigerant piping is very important work to prevent water-dust-rubbish from getting in. All piping
terminals needs sealing such as shown below.
Place
Outside
Period of work
More than 1 month
Less than 1 month
Not specified
Inside
Method of seal
Pinch
Pinch or taping
− How to pinch
Close terminal part of piping with pliers and seal the gap with brazing.
− How to tape
Seal terminal part of piping with vinyl tape.
3. Vacuum pumping
The purpose of vacuum pumping work is to remove and dry air inside the piping or nitrogen at air tightness test.
Perform the work carefully.
Caution
Use the vacuum pump with the backflow prevention mechanism to prevent backflow of oil.
Vacuuming time
60 minutes or more
Vacuum pump capacity
60 l/min or more
4. Refrigerant filling
Refrigerant filling must be done in the state of liquid refrigerant. If this is done in gas refrigerant, the balance of refrigerant
composition will collapse and damage the operation.
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For the use of a gas cylinder without siphon inside, turn it upside down and use it.
(We recommend manifold with sight glass.)
Caution
Do not use a “CHARGE CYLINDER”.
Caution
As a rule, please collect all existing refrigerants in the system outside the system when the refrigerant leakage occurs by the
system.
After that, please fill new refrigerant of a regulated amount again.
DRY VACUUMING
• If vacuum pump possible vacuuming until less than -100.7kpa.
1. Running vacuum pump at both liquid and gas side for more than 1 hour and vacuuming until -100.7kpa.
2. After that keep the pressure -100.7kpa for 1 hour and confirm the vacuum gauge value not increasing.
3. If vacuum gauge value is increase, there is possibility of water inside the unit or there is any leakage.
10.4.3. Regarding handling
Handling the unit by hold the handle at compressor side and hold the basepan bottom at fan side.
10.4.4. Selecting the outdoor unit installation locations
• Select location which satisfies the following condition, and then confirm with the customer that such a place is satisfactory
before installing the outdoor unit.
1.
2.
3.
4.
5.
6.
7.
8.
There should be sufficient ventilation.
The outdoor unit should be sheltered as much as possible from rain and direct sunlight, and the air should be able to move around so
that hot and cold air do not build up.
There should not be animals or plants near the air outlet which could be
adversely affected by hot or cold air coming out from the unit.
The outlet air and operating noise should not be a nuisance to other occupants
nearby.
The location should be able to withstand the full weight and vibration of the
outdoor unit, and it should also be level and safe for the unit to be installed.
The intake and outlet should not be covered.
There should not be danger of flammable gas or corrosive gas leaks.
There should be as little back-ventilation (air blowing directly onto the fan) as
possible.
(If strong wind blows directly onto the fan, it may cause problems with normal
operation.)
• If you know which direction the prevailing wind comes from during the
operating season, set the outdoor unit at a right-angle to this wind direction,
or so that air outlet faces toward a wall or fence.
• If there are obstructions near the outdoor unit and the wind direction is not
constant, install an optional air guider.
9. Do not allow any obstacles near the outdoor unit which will interfere with air flow around the air intake and air outlet.
10. If installing in a location which is prone to snowfall, place the installation base as high as possible, and be sure to install a roof or
enclosure which does not allow snow to accumulate.
11. Avoid installing the unit in places where petroleum products (such as machine oil), salinity, sulphurous, gases or high-frequency noise are
present.
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12. Be sure to leave enough space around the outdoor unit to maintain proper performance and to allow access for routine maintenance.
• Allow enough space from any obstacles as shown in Fig. 1.2 below in order to prevent short-circuits from occurring.
(If installing more than one outdoor unit, make the necessary space available as outlined in 13.)
However, there should be at least 1 meter of free space above the unit.
• The height of any obstacles at the air intake and outlet sides should not be greater than the height of the outdoor unit.
13. If installing more than one outdoor unit, allow enough space around each unit as shown below.
Maintain sufficient space above the unit.
Values inside brackets indicate distances when installing the 4HP - 6HP.
• The distance given above are the minimum distance required in order to maintain proper performance.
Allow as much space as possible in order to get the best performance from the units.
10.4.5. Transporting and installing the outdoor unit
• Transporting
1. The outdoor unit should be transported in its original packaging as close to the installation location as possible.
2. If suspending the outdoor unit, use a rope or belt, and use cloth or wood as padding in order to avoid damaging the unit.
• Installation
1. Read the “Selecting the outdoor unit installation location” section thoroughly before installing the outdoor unit.
2. If installing the unit to a concrete base or other solid base, use M10 or W3/8 bolts and nuts to secure the unit, and ensure
that the unit is fully upright and level.
(The anchor bolt positions are shown in the diagram at the right side.)
In particular, install the unit at a distance from the neighbouring building which conforms to regulations specified by local
noise emission regulation standards.
3. Do not install the outdoor unit to the building’s roof.
4. If there is a possibility that vibration may be transmitted to the rooms of the building, place rubber insulation between the unit
and the installation surface.
5. Drain water will be discharged from the outdoor unit when operating the system in heating or defrosting modes. Select an
installation location which will allow the water to drain away properly, or provide a drainage channel so that the water can
drain away.
(If this is not done, the drain water may freeze during winter, or the water may spill down to areas underneath the installation
location.)
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• If a drain pipe needs to be installed, insert the accessory drain elbow into the mounting hole at the bottom of the outdoor unit,
and connect a hose with an inside diameter of 15mm to this drain elbow.
(The hose is not supplied.)
If using the drain elbow, install the outdoor unit on a base which is at least 5cm high.
NOTE
In cold regions (where the outdoor air temperature can drop to 0°C or below continuously for 2-3 days), the drain water may freeze,
and this may prevent the fan from operating. Do not use the drain elbow in such cases.
10.4.6. Connecting the pipes
• Use a clean pipe which does not include water or dust for inside of piping.
• When cutting the refrigerant pipes, a piping cutter must be used. Before connecting the refrigerant pipes, blow nitrogen and
blow off dust in the pipes.
(Never use tools which cause a lot of dust such as a saw and a magnet.)
• When waxing replace nitrogen inside the piping after removing dirt and dust. (In order to prevent oxidization scale from forming
inside the piping).
• The refrigerant pipes are of particular importance.
The installation work for refrigerant cycles in separate-type air conditioners must be carried out perfectly.
1. Refer to the table below for the pipe diameters equivalent lengths and indoor/outdoor unit difference of elevation.
Pipe diameter (mm)
Liquid-side pipes
Gas-side pipes
ø9.52 x 0.8
ø15.88 x 1.0
Equivalent length (m)
Difference of elevation (m)
50
30
2. Local pipes can project in any of four directions.
• Make holes in the pipe panels for the pipes to pass through.
• Be sure to install the pipe panels to prevent rain from getting inside the outdoor unit.
[Removing the service panel].
(1) Remove the two mounting screws.
(2) Slide the service panel downward to release the pawls. After this, pull the
service panel toward you to remove it.
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3. Notes when connecting the refrigerant pipes.
• Use clean copper, pipes with no water or dust on the insides.
• Use phosphorus-free, unjointed copper pipes for the refrigerant pipes.
• If it is necessary to cut the refrigerant pipes, be sure to use a pipe cutter, and use compressed nitrogen or an air blower to
clean out any foreign particles from inside the pipe.
• Be careful not to let any dust, foreign materials or water get inside the pipes during connection.
• If bending the pipes, allow as large a bending radius as possible. Do not flex the pipes any more than necessary.
• If joining pipe ends, do so before tightening the flare nut.
• Always blow the pipe end with nitrogen while joining pipe ends.
(This will prevent any oxide scaling from occurring inside the pipe.)
• If using long pipe lengths with several joined pipe ends, insert strainers inside the pipes. (Strainers are not supplied.)
• When tightening the flare nuts, coat the flare (both inside surfaces) with a small amount of refrigerator oil, and screw in
about 3-4 turns at first by hand.
• Refer to the following table for the tightening torques. Be sure to use two spanners to tighten.
(If the nuts are overtightened, it may cause the flares to break or leak.)
4. After piping connection has been completed, make sure that the joint areas of the indoor and outdoor units are free from gas
leakage by the use of nitrogen, etc.
5. Air purge within connection piping shall be carried out by evacuation.
6. Close the tube joining area with putty heat insulator (local supply) without any gap as shown in below figure.
(To prevent insects or small animal entering)
10.4.7. Heat insulation
Use a material with good heat-resistant properties as the
Caution heat insulation for the pipes. Be sure to insulate both the
gas-side and liquid-side pipes. If the pipes are not
adequately insulated, condensation or water leakages
may occur.
Liquid-side pipes
Gas-side pipes
Material that can withstand
120°C or higher
10.4.8. Charging with refrigerant
• At the time of shipment from the factory, this unit is charged with enough refrigerant for an equivalent pipe length of 30m. If the
equivalent pipe length used will be 30m or less, no additional charging will be necessary.
• If the equivalent pipe length will be between 30 and 50m, charge with additional refrigerant according to the equivalent length
given in the table below.
− For standard type
Additional charging amount
0.05 kg/m
Equivalent length
50m
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• Pump down operation
− Operate the pump down according to the following procedures.
Procedure
1. Confirm the valve on the liquid side and the gas side is surely open.
2. Press the PUMP DOWN switch on outdoor printed board for 1
second or more.
3. Shut the valve on the liquid side surely.
Notes
Perform the cooling operation for five minutes or more.
When the valve is shut halfway, the compressor is occasionally
damaged.
10.4.9. Electrical wiring
Caution
The units must be connected to the supply cables for fixed wiring by qualified technician.
Feed the power source to the unit via a distribution switch board designed for this purpose, the switch should disconnected all
poles with a contact separation of at least 3mm.
When the supply cable is damaged, it must be replaced by qualified technician.
Be sure to install a current leakage breaker, main switch and fuse to the main power supply, otherwise electric shocks may
result.
Caution
Be sure to connect the unit to secure earth connection.
If the earthing work is not carried out properly, electric shocks may result.
Warning
Warning
Wiring shall be connected securely by using specified cables and fix them securely so that external force of the cables may
not transfer to the terminal connection section.
Imperfect connection and fixing leads to fire, etc.
• Connect the power supply wiring and indoor/outdoor unit connection wiring according to the electrical circuit diagram
instructions.
• Clamp the wires securely to the terminal connections using cord clamps so that no undue force is placed on the wires.
• Once all wiring work has been completed, tie the wires and cords together with the binding strap so that they do not touch other
parts such as the compressor and pipes.
1.
2.
3.
4.
5.
6.
7.
Connect the power supply line to a 3-phase/380-415V (or single-phase 220240V) power supply.
The equipment shall be connected to a suitable mains network with a main
impedance less than the valve indicated in the table of power supply
specifications.
Be sure to connect the wires correctly to terminal board with connecting the
crimp type ring terminal to the wires.
The binding screws inside the power supply box may become loosened due to
vibration during transportation, so check that they are tightened securely.
Tighten the binding screws to the specified torque while referring to the table
below.
If connecting two separate wires to a single crimped terminal, place the two
crimped terminal wires together as shown in Fig. A. (If the arrangement shown in
Fig. B is used, poor contacts or contact damage may result.)
If momentarily turning on the power supply for both the indoor and outdoor units,
do not turn the power off again until at least 1 minute has passed (except when
a reversed phase has been detected).
Warning
Use only the specified cables for wiring connections. Connect the cable securely, and secure them properly so that no undue
force will be applied to the terminal connections.
If the terminals are loose or if the wires are not connected securely, fire may result.
Terminal screw
M3
M4
M5
Tightening torque N.cm {kgf.cm}
69 ~ 98 {7 ~ 10}
157 ~ 196 {16 ~ 20}
196 ~ 245 {20 ~ 25}
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Earth lead wire shall be longer than other lead wires as shown in the figure for the electrical safety in case of the slipping out of the
cord from the anchorage.
• Power supply specifications
Model name
CU-L24DB***
CU-L28DB***
CU-L34DB***
CU-L43DB***
CU-L50DB***
220V-240V~
220V-240V~
220V-240V~
220V-240V~
380V-415V 3N~
Leakage
current
breaker
(A)
30
30
40
40
30
Circuit breaker
(Minimum Capacity)
Switch
Fuse
(A)
(A)
30
20
30
20
40
30
40
40
30
30
Minimum
power
supply
cables
4 mm2
4mm2
cable
based on
length (m)
14
14
9
8
11
Maximum
permissible
impedance
(Ω)
0.1
0.1
0.05
0.05
0.02
Indoor/outdoor
unit connection
power cables
(terminals
,
,
,
)
2.5 mm2 × 3
NOTE
1. Where ground work (earth) is carried out, do not connect the ground return to the gas pipe, water line pipe, grounded circuit of the
telephone and lightning rod, or ground circuit of other product in which earth leakage breaker is incorporated. (Such action is
prohibited by statute, etc.)
Make sure the indoor and outdoor connection wires are detangled. (There might be effect to received outside noise.)
2. Use the standard power supply cables for Europe (such as H05RN-F or H07RN-F which conforms to CENELEC (HAR) rating
specifications) or use the cables based on IEC standard. (245IEC57, 245IEC66)
3. Select the particular size of electrical wire for power supply cables in accordance with the standards of the given nation and
region.
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10.4.10. Connecting power supply cables
CAUTION
• For three phase model, never operate the unit by pressing the electromagnetic switch.
• Never correct the phase by switching over any of the wires inside the unit.
10.4.11. Precautions with regard to test operation
CAUTION
• Always be sure to use a properly-insulated tool to operate the switch on the circuit board. (Do not
use your finger or a metallic object.)
• Never turn on the power supply until all installation work has been completed.
• Turn on the circuit breaker 12 hours or more before a test run. (By supplying power to crankcase
heater, compressor is warmed and liquid compressing is prevented.)
• Check that the voltage is 90% of rated voltage or higher when starting the unit.
(The unit will not operate if the voltage is less than 90% of rated voltage.)
• Test operation can be carried out using the remote control unit or by using the switch on the
printed circuit board inside the outdoor unit.
If carrying out test operation at the printed circuit board of the outdoor unit, follow the procedure
given below. (If using the remote control unit to carry out test operation, refer to the installation
manual which is supplied with the indoor unit.)
• Press the COOL or HEAT switch for 1 second or more.
(Be sure to select cooling mode first, and run the units in this mode for 5 minutes or more.)
• Press the TEST button once more to cancel test operation mode.
• When performing heating test operation when the outside temperature is high, or cooling test
operation when the outside temperature is low, the protection circuits may sometimes operate
within a few minutes.
NOTE 1
These units are equipped with connection error prevention circuits. If the units do not operate, it is possible that the connection
error prevention circuits have been operated. In such cases, check that the Indoor/outdoor unit connection wire (connected to
terminals
,
and
) is connected correctly. If they are connected incorrectly, connect them correctly. Normal operation
should then commence.
NOTE 2
Do not short the remote control unit wires to each other. (The protection circuit will be activated and the units will not operate.)
Once the cause of the short is eliminated, normal operation will then be possible.
NOTE 3
When running the units in heating mode during test operation, be sure to run the units in cooling mode first before selecting
this mode. If heating mode is selected first, it may cause problems with operation of the compressor.
NOTE 4
Test operation should be carried out for a minimum of 5 minutes. (Test operation will be cancelled automatically after 30
minutes.)
NOTE 5
Test operation mode should always be cancelled once test operation itself has been completed.
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NOTE
If the self-diagnosis function reports a problem but more than one problem has developed at the indoor and/or outdoor units,
the problem display on the remote control unit may not match the LED display on the outdoor unit printed circuit board. In such
cases, check both locations and remove the causes of the problems.
10.4.12. As to making the inspection after completion of work fully understood
• At the time when the work has been completed, measure and record the characteristics of test run without fail and keep the
measuring date, etc.
• Carry out the measurement regarding room temperature outside air temperature, suction and air discharge temperatures, wind
velocity, wind volume, voltage current, presence of abnormal vibration, operating pressure, piping temperature, compressive
pressure, airtight pressure as items to be measured.
• As to the structure and appearance, check following items.
Short circuit of the blow-out air
Smooth flow of the drain
Reliable thermal insulation
Leakage of refrigerant
Mistake in wiring
Reliable connection of the grand wire
Looseness in terminal screw, fastening torque
M3... 69-98N.cm {7-10kgf.cm} M4... 157-196N.cm {16-20kgf.cm}
M5... 196-245N.cm {20-25kgf.cm}
10.4.13. As to delivery to the customer
• Request the customer to operate this air conditioner viewing instruction manual come with indoor unit in practice and explain
how to operate.
• Deliver the instruction manual to the customer without fail.
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10.5. Wired remote controller installation
Wired Remote Controller Installation Manual
• Before installing the wired remote controller, be sure to thoroughly read the “Notes with regard to safety” section of the
installation manual provided with the indoor unit.
• After installing the wired remote controller, carry out a test operation to check that the remote controller functions properly,
and also explain the operation and cleaning procedures to the customer in accordance with the details in instruction manual.
Furthermore, ask the customer to keep this installation manual and the instruction manual in a safe place for later reference.
10.5.1. Accessories supplied with wired remote controller
Name
Remote controller
Q’ty
1
Diagram
Remark
Remote control cable
1
Length (10m)
4mm screw
3
Installing the remote controller to the wall
M4 screw
3
Installing the remote controller to an outlet box
Round terminal
2
Connecting to indoor unit terminal block
10.5.2. Notes regarding wired remote controller setting-up location
• Select a place where the remote controller can be operated easily (after obtaining approval from the building’s owner).
• Install in a place which is away from direct sunlight and as free from humidity as possible.
• Install in a place which is as flat as possible to avoid warping of the remote controller.
(If installed to a wall an uneven surface, damage to the LCD case or operation problems may result.)
• Install in a place where the LCD can be seen easily. If the remote controller is installed somewhere which is too low or too high,
it may be difficult to read the LCD. (Standard height from the floor is 1.2 to 1.5 meters.)
• Avoid installing the remote control cable near refrigerant pipes or drain pipes.
• Install the remote control cable at least 5cm away from other electric wires (including stereo and TV cables) to avoid misoperation (electromagnetic noise).
• If passing the remote control cable through a wall, be sure to install a water trap above the cable.
• Allow sufficient space around the remote controller as shown in the illustration at below.
Secure the remote controller lower case to the wall or to an outlet.
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10.5.3. Remote controller installation
• Be sure to turn off the main power before installing and connecting the remote controller.
(If the remote controller is connected while the power is still turned on, the remote controller displays may not appear.)
If no displays appear on the remote controller, check while referring to “If no remote controller displays appear” in “9.5.5. Test
operation”.
• The remote control cable is live during use, so please be careful with it.
Remote controller wiring
• Connect the indoor unit and the remote controller as shown in the illustration below.
• The remote control cable is non-polar.
• At the time of shipment from the factory, the connector cable used to connect the terminal block and connector CN1 is
disconnected. When connecting the remote controller wiring and installing the remote controller, be sure to connect the cord to
the connector CN1.
Extending the remote control cable
• Solder a sheathed PVC cord or cable (0.5 - 2 mm2) with specifications among those given below to the remote controller end
of the accessory remote control cable (10 m).
* PVC round cabtire cord
* 600V PVC-insulated PVC sheathed round cable
* 600V PVC-insulated PVC sheathed flat cable
NOTE
IEC 502
IEC 227-4
IEC 227-4
The maximum possible length for the remote control cable is 200 m.
Remote controller installation procedure
• Remove the remote controller lower case.
(Insert a flat-tipped screw driver or similar 2 to 3 mm into one of the gaps at the bottom of the case, and then twist the screw
driver to open. [Refer to the illustration below.])
Be careful not to damage the lower case.
• Secure the lower case to the wall or outlet box.
(Refer to the illustration below for the embedded and exposed positions for remote control cable.)
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NOTE
− Be sure to use only the accessory screws.
− Do not bend the lower case when tightening the screws.
(If the screws are overtightened, damage may result.)
− Do not remove the protective tape which is affixed to the upper case circuit board.
• If installing the remote controller with the remote control cable exposed, use nippers to cut a notch into the upper case. (The
feeding-out direction can be either up or to the left or right)
• Strip the end of the remote control cable which is to be connected to the remote controller. (Refer to the illustration below)
• Route the remote control cable inside the lower case in accordance with the intended feeding-out direction. (Refer to the
illustration below.)
Securely connect connector CN1. (If it is not connected, the remote controller will not operate.)
NOTE
After connecting the connector, do not suspend the upper case by its own weight, otherwise the connector cord may break.
• If controlling using two remote controllers, refer to “Control using two remote controller-s” in “9.4.4. Settings”.
• Secure the upper case to the lower case.
(Hook the upper tab of the upper case into the lower case, and then push the upper case until it snaps shut onto the lower case
tab, while being careful not to clamp the remote control cable and the connector cord.)
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If remote control cable is embedded
1. Embed an outlet box (JIS C 8336) into the wall, and then secure
the remote controller base plate to the outlet box with the two
accessory M4 screws. Make sure that the base plate is flat against
the wall at this time, with no bending (looseness)
2. Pass the remote control cable into the box and then install the
remote controller.
If installing with the remote control cable exposed
1. Secure the remote controller base plate to the wall with two
accessory 4 mm screws.
2. The feeding-out direction for the remote control cable can be
either up or to the left or right. (Refer to the illustration at left.)
After determining the feeding-out direction, use nippers to make a
notch in the cover.
3. Route the remote control cable as shown in the illustration at left.
Pull the cord firmly around the outside of the base plate at this
time.
10.5.4. Settings
Control using two remote controllers
• Up to two remote controllers can be installed for a single indoor unit, and either remote controller can be used to operate the
indoor unit.
• The indoor unit can be operated with the last switch pressed having priority.
1. Decide which is to be the master and which is to be the slave remote controller.
The master or slave states of the remote controller are set automatically. The MASTER/SLAVE setting switch can also be
use to make the setting manually, however if a manual setting is made, that manual setting has priority.
Be sure to turn off the main power before making a manual setting.
2. Connect the remote controllers.
Connect both remote controllers to terminals (A) and (B) on the indoor unit terminal block (non-polar).
Group control
• All in group will be remote controller thermistor setting when using the remote controller thermistor.
• Up to a maximum of 16 indoor units can be connected at the time of group control.
(Do not connect heat pump unit with cooling only unit.)
• Indoor unit No. is possible to set automatically at the time of group control. However, what number would be assigned to which
indoor units is unknown.
Indoor unit No. is also possible to set manually with DIP switches. Since manual address setting is priority during performing
automatic address setting. (Do not use manual address setting and automatic address setting together.)
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[Manual Setting]
Automatic address resetting for group control
• The address settings for group control (air conditioner Nos. 1 to 16) can be reset automatically.
1. When operation is stopped, press for 5 seconds, continue the TEST RUN switch to display “00” (will be LOCAL MODE).
2. Press the UP (TEMP) DOWN (TEMP) switch to display 10.
3. Press the SELECT switch to display “000”. It would blinks.
4. Press the UP (TIMER) DOWN (TIMER) switch to display “001”. It would blinks.
5. Press the SET switch.
Switching the thermistor
• The temperature detection thermistor can be switched between the thermistor at the indoor unit and the thermistor at the
remote controller. However, do not switch to the remote controller thermistor if using two remote controllers.
1. When operation is stopped, press for 5 seconds, continue the TEST RUN switch to display “00” (will be LOCAL MODE).
2. Press the UP (TEMP) DOWN (TEMP) switch to display 11.
3. Press the SELECT switch to display “000”. It would blinks.
4. Press the UP (TIMER) DOWN (TIMER) switch to choose display “000” or “001”.
“000”... Indoor unit setting (factory default)
“001”... Remote controller setting
5. Press the SET switch. (Be sure to press the SET switch so that normal operation mode can be resumed.)
• Repeat the procedure in steps (1) to (5) to change the setting again.
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10.5.5. Test operation
• Turn on the main power.
• After 3 minutes have passed since the power was turned on, press the OFF/ON switch on the remote controller. (No operation occurs within
3 minutes after the power was turned on.)
• Press the TEST RUN switch within 1 minute of pressing the OFF/ON switch.
• Next, select the operation mode. (Be sure to select cooling mode first, and run the unit in this mode for 5
minutes or more.)
• Press the OFF/ON switch or the TEST RUN switch to cancel test operation.
• Test operation will be cancelled automatically after 30 minutes.
If remote controller displays nothing
• Check once more that the remote control cable is securely connected. (Check for loose terminals, poor contacts, connection
positions terminal block, etc.)
• If the above checks show that nothing is wrong but nothing appears on the remote controller display.
• It is possible that the remote controller was connected while the main power was still turned on. If such is the case, carry out
the following.
*Set DIP switch (SW2) No. 1 to 4. The ON position, and then turn on the main power. If the display appears after about 30 seconds,
turn DIP switches 2 to 4 to OFF position.
10.5.6. Self-diagnosis function
If “CHECK” is blinking on the timer
• If the “CHECK” display on the wired remote controller is blinking, the details of the problems are displayed on the timer display
screen each time the CHECK switch is pressed.
• Further details of the problem can be displayed by pressing the SET switch while the general problem details are being
displayed.
Example of current problem display
If “CHECK” is not blinking on the timer
• If the “CHECK” display on the wired remote controller is not blinking, press the CHECK switch continuously for 5 seconds or
more to display the problem details for the last problem or the problem before that.
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• You can then switch between the display for the previous problem and the problem before that by pressing the UP (TIMER)
DOWN (TIMER) switches.
• Press the CHECK switch once more to return to the normal display.
Example of previous problem display
Example of abnormality display before previous display
• The display can be switched between the previous problem and the one before that by pressing the UP (TIMER) DOWN
(TIMER) switches.
• After eliminating the cause of the problem, press the CHECK switch once more to return to the normal display.
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10.6.3. Refrigerant charging
10.6. Twin systems installation
1. Calculate the piping length according to the following
table1.
10.6.1. General
1. Two indoor units can be operated simultaneously with a
single remote control unit. Note that individual operation is
not possible.
• Calculation table 1. (piping length)
2. Master unit and slave-unit can be set automatically in twin
systems. No address setting is necessary.
3. Applicable “Twin” combination table.
2. Calculate the additional amount of refrigerant according to
the following table 2. If the calculation table 1 result
exceeds 30m, additional gas charge necessary. (Additional
gas charge unnecessary for 30m or less from the
calculation result)
• Calculation table 2. (additional refrigerant gas charge
amount)
• Should be the same capacity and the same model type.
10.6.2. Piping connections
1. The following table shows the pipe diameter for a twin-type
system. (Branch pipe kit should be used)
2. The following table shows the equivalent pipe lengths and
height differences for twin type systems.
10.6.4. Wiring
Notes
• Use the main pipe to gain any rise or fall required for the
pipes.
• The number of bends should be 8 or less in a single
system (L+la,L+lb), and 15 or less overall.
• Branch pipes should be positioned horizontally.
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11 INSTALLATION & SERVICING AIR CONDITIONER
11.1. Outline
11.1.1. About R410A refrigerant
1. Converting air conditioners to R410A
Since it was declared in1974 that chlorofluorocarbons (CFC), hydro chlorofluorocarbons (HCFC) and other substances pose a
destructive danger to the ozone layer in the earth’s upper stratosphere (20 to 40 km above the earth), measures have been
taken around the world to prevent this destruction.
The R22 refrigerant which has conventionally been used in ACs is an HCFC refrigerant and, therefore, possesses this ozonedestroying potential. International regulations (the Montreal Protocol on Ozone-Damaging Substances) and the domestic laws
of various countries call for the early substitution of R22 by a refrigerant which will not harm the ozone layer.
• In ACs, the HFC refrigerant which has become the mainstream alternative is called R410A. Compared with R22, the
pressure of R410A is approximately 1.6 times as high at the same refrigerant temperature, but the energy efficiency is about
the same. Consisting of hydrogen (H), fluorine (F) and carbon (C), R410A is an HFC refrigerant. Another typical HFC
refrigerant is R407C. While the energy efficiency of R407C is somewhat inferior to that of R410A, it offers the advantage
of having pressure characteristics which are about the same as those of R22, and is used mainly in packaged ACs.
2. The characteristics of HFC (R410A) refrigerants
a. Chemical characteristics
The chemical characteristics of R410A are similar to those of R22 in that both are chemically stable, non-flammable
refrigerants with low toxicity.
However, just like R22, the specific gravity of R410A gas is heavier than that of air. Because of this, it can cause an oxygen
deficiency if it leaks into a closed room since it collects in the lower area of the room. It also generates toxic gas when it is
directly exposed to a flame, so it must be used in a well ventilated environment where it will not collect.
Composition (wt%)
Boiling point (°C)
Vaporizing pressure (25°C)
Saturated vapor density
Flammability
Ozone-destroying point (ODP)
Global-warming point (GWP)
Table 1 Physical comparison of R410A and R22
R410A
R32/R125 (50/50)
-51.4
1.56 MPa (15.9 kgf/cm2)
64.0 kg/m3
Non-flammable
0
1730
R22
R22 (100)
-40.8
0.94 MPa (9.6 kgf/cm2)
44.4 kg/m3
Non-flammable
0.055
1700
b. Compositional change (pseudo-azeotropic characteristics)
R410A is a pseudo-azeotropic mixture comprising the two components R32 and R125. Multi-component refrigerants with
these chemical characteristics exhibit little compositional change even from phase changes due to vaporization (or
condensation), which means that there is little change in the circulating refrigerant composition even when the refrigerant
leaks from the gaseous section of the piping.
Accordingly, R410A can be handled in almost the same manner as the single-component refrigerant R22. However, when
charging, because there is a slight change in composition between the gas phase and the liquid phase inside a cylinder or
other container, charging should basically begin with the liquid side.
c. Pressure characteristics
As seen in Table 2, the gas pressure of R410A is approximately 1.6 times as high as that of R22 at the same refrigerant
temperature, which means that special R410A tools and materials with high-pressure specifications must be used for all
refrigerant piping work and servicing.
Table 2 Comparison of R410A and R22 saturated vapor density
Unit: MPa
Refrigerant Temperature (°C)
R410A
-20
0.30
0
0.70
20
1.35
40
2.32
60
3.73
65
4.15
66
R22
0.14
0.40
0.81
1.43
2.33
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d. R410A refrigerating machine oil
Conventionally, mineral oil or a synthetic oil such as alkylbenzene has been used for R22 refrigerating machine oil. Because
of the poor compatibility between R410A and conventional oils like mineral oil, however, there is a tendency for the
refrigerating machine oil to collect in the refrigerating cycle. For this reason, polyester and other synthetic oils which have
a high compatibility with R410A are used as refrigerating machine oil.
Because of the high hygroscopic property of synthetic oil, more care must be taken in its handling than was necessary with
conventional refrigerating machine oils. Also, these synthetic oils will degrade if mixed with mineral oil or alkylbenzene,
causing clogging in capillary tubes or compressor malfunction. Do not mix them under any circumstances.
11.1.2. Safety measures when installing/servicing refrigerant piping
Cause the gas pressure of R410A is approximately 1.6 times as high as that of R22, a mistake in installation or servicing could
result in a major accident. It is essential that you use R410A tools and materials, and that you observe the following precautions
to ensure safety.
1. Do not use any refrigerant other than R410A in ACs that have been used with R410A.
2. If any refrigerant gas leaks while you are working, ventilate the room. Toxic gas may be generated if refrigerant gas is exposed
to a direct flame.
3. When installing or transferring an AC, do not allow any air or substance other than R410A to mix into the refrigeration cycle. If
it does, the pressure in the refrigeration cycle can become abnormally high, possibly causing an explosion and/or injury.
4. After finishing the installation, check to make sure there is no refrigerant gas leaking.
5. When installing or transferring an AC, follow the instructions in the installation instructions carefully. Incorrect installation can
result in an abnormal refrigeration cycle or water leakage, electric shock, fire, etc.
6. Do not perform any alterations on the AC unit under any circumstances. Have all repair work done by a specialist. Incorrect
repairs can result in a water leakage, electric shock, fire, etc.
11.2. Tools for installing/servicing refrigerant piping
11.2.1. Necessary tools
In order to prevent an R410A AC from mistakenly being charged with any other refrigerant, the diameter of the 3-way valve service
port on the outdoor unit has been changed. Also, to increase its ability to withstand pressure, the opposing dimensions have been
changed for the refrigerant pipe flaring size and flare nut. Accordingly, when installing or servicing refrigerant piping, you must have
both the R410A and ordinary tools listed below.
Type of work
Flaring
Bending, connecting pipes
Air purging
Gas leak inspection
Table 3 Tools for installation, transferring or replacement
Ordinary tools
R410A tools
Flaring tool (clutch type), pipe cutter,
Copper pipe gauge for clearance
reamer
Adjustment, flaring tool (clutch type)*1)
Torque wrench (nominal diameter 1/4,
3/8,1/2). Fixed spanner (opposing sides
12 mm, 17 mm, 19 mm). Adjustable
wrench, Spring bender
Vacuum pump. Hexagonal wrench
Manifold gauge, charging hose, vacuum
(opposing sides 4 mm)
pump adaptor
Gas leak inspection fluid or soapy water
Electric gas leak detector for HFC
refrigerant*2)
*1) You can use the conventional (R22) flaring tool. If you need to buy a new tool, buy the R410A type.
*2) Use when it is necessary to detect small gas leaks.
For other installation work, you should have the usual tools, such as screwdrivers (+,-), a metal-cutting saw, an electrical drill, a hole
core drill (65 or 70 dia.), a tape measure, a level, a thermometer, a clamp meter, an insulation tester, a voltmeter, etc.
Type of work
Refrigerant charging
Brazing
part*1)
(Replacing
refrigerating
Table 4 Tools for serving
Ordinary tools
R410A tools
Electronic scale for refrigerant charging.
Refrigerant cylinder. Charging orifice and
packing for refrigerant cylinder
cycle Nitrogen blow set (be sure to use nitrogen
blowing for all brazing), and brazing
machine
*1) Always replace the dryer of the outdoor unit at the same time. The replacement dryer is wrapped in a vacuum pack. Replace
it last among the refrigerating cycle parts. Start brazing as soon as you have opened the vacuum pack, and begin the vacuuming
operation within 2 hours.
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11.2.2. R410A tools
1. Copper tube gauge for clearance adjustment
(used when flaring with the conventional flaring tool (clutch
type))
• This gauge makes it easy to set the clearance for the
copper tube to 1.0-1.5 mm from the clamp bar of the
flaring tool.
Fig. 1 Copper tube gauge for clearance adjustment
2. Flaring tool (clutch type)
• In the R410A flaring tool, the receiving hole for the
clamp bar is enlarged so the clearance from the clamp
bar can be set to 0-0.5 mm, and the spring inside the
tool is strengthened to increase the strength of the pipeexpanding torque. This flaring tools can also be used
with R22 piping, so we recommend that you select it if
you are buying a new flaring tool.
Fig. 2 Flaring tool (clutch type)
3. Torque wrenches
Fig. 3 Torque wrenches
For
For
For
For
1/4
3/8
1/2
5/8
(opposite
(opposite
(opposite
(opposite
side
side
side
side
x
x
x
x
torque)
torque)
torque)
torque)
17
22
24
27
Table 5
Conventional wrenches
mm x 18 N.m (180 kgf.cm)
mm x 42 N.m (420 kgf.cm)
mm x 55 N.m (550 kgf.cm)
mm x 65 N.m (650 kgf.cm)
17
22
26
29
R410A wrenches
mm x 18 N.m (180 kgf.cm)
mm x 42 N.m (420 kgf.cm)
mm x 55 N.m (550 kgf.cm)
mm x 65 N.m (650 kgf.cm)
4. Manifold gauge
• Because the pressure is higher for the R410A type, the conventional type cannot be used.
Table 6 Difference between R410A and conventional high/low-pressure gauges
Conventional gauges
R410A gauges
High-pressure gauge (red)
-76 cmHg - 35 kgf/cm3
-0.1 - 5.3 MPa -76 cmHg - 53 kgf/cm3
Low-pressure gauge (blue)
-76 cmHg - 17 kgf/cm3
-0.1 - 3.8 MPa -76 cmHg - 38 kgf/cm3
• The shape of the manifold ports has been changed to prevent the possibility of mistakenly charging with another type of
refrigerant.
Port size
Table 7 Difference between R410A and conventional manifold port size
Conventional gauges
R410A gauges
7/16 UNF 20 threads
1/2 UNF 20 threads
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5. Charging hose
• The pressure resistance of the charging hose has been
raised to match the higher pressure of R410A. The hose
material has also been changed to suit HFC use, and
the size of the fitting has been changed to match the
manifold ports.
Fig. 4 Manifold gauge charging hose
Pressure
resistance
Material
Table 8 Difference between R410A and conventional charging hoses
Conventional hoses
R410A hoses
Working pressure
3.4 MPa (35 kgf/cm3)
5.1 MPa (52 kgf/cm3)
Bursting pressure
17.2 MPa (175 kgf/cm3)
27.4 MPa (280 kgf/cm3)
NBR rubber
HNBR rubber Nylon coating inside
6. Vacuum pump adaptor
• When using a vacuum pump for R410A, it is necessary
to install an electromagnetic valve to prevent the
vacuum pump oil from flowing back into the charging
hose. The vacuum pump adaptor is installed for that
purpose. If the vacuum pump oil (mineral oil) becomes
mixed with R410A, it will damage the unit.
Fig. 5 Vacuum pump adaptor
7. Electric gas leak detector for HFC refrigerant
• The leak detector and halide torch that were used with
CFC and HCFC cannot be used with R410A (because
there is no chlorine in the refrigerant).
• The present R134a leak detector can be used, but the
detection sensitivity will be lower (setting the sensitivity
for R134a at 1, the level for R410A will drop to 0.6).
• For detecting small amounts of gas leakage, use the
electric gas leak detector for HFC refrigerant. (Detection
sensitivity with R410A is about 23 g/year).
Fig. 6 Electric gas leak detector for HFC refrigerant
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8. Electronic scale for refrigerant charging
• Because of the high pressure and fast vaporizing speed
of R410A, the refrigerant cannot be held in a liquid
phase inside the charging cylinder when charging is
done using the charging cylinder method, causing
bubbles to form in the measurement scale glass and
making it difficult to see the reading. (Naturally, the
conventional R22 charging cylinder cannot be used
because of the differences in the pressure resistance,
scale gradation, connecting port size, etc.)
• The electronic scale has been strengthened by using a
structure in which the weight detector for the refrigerant
cylinder is held by four supports. It is also equipped with
two connection ports, one for R22 (7/16 UNF, 20
threads) and one for R410A (1/2 UNF, 20 threads), so
it can also be used for conventional refrigerant charging.
Fig. 7 Electronic scale for refrigerant charging
• There are two types of electronic scales, one for 10-kg
cylinders and one for 20-kg cylinders. (The 10-kg
cylinder is recommended.)
Refrigerant charging is done manually by opening and
closing the valve.
9. Refrigerant cylinders
• The R410A cylinders are labeled with the refrigerant
name, and the coating color of the cylinder protector is
pink, which is the color stipulated by ARI of the U.S.
• Cylinders equipped with a siphon tube are available to
allow the cylinder to stand upright for liquid refrigerant
charging.
Fig. 8 Refrigerant cylinders
10. Charging orifice and packing for refrigerant cylinders
• The charging orifice must match the size of the charging
hose fitting (1/2 UNF, 20 threads).
• The packing must also be made of an HFC-resistant
material.
Fig. 9 Charging orifice and packing
11.2.3. R410A tools which are usable for R22 models
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
Table 9 R410A tools which are usable for R22 models
R410A tools
Usable for R22 models
Copper tube gauge for clearance adjustment
OK
Flaring tool (clutch type)
OK
Manifold gauge
NG
Charging hose
NG
Vacuum pump adaptor
OK
Electric gas leak detector for HFC refrigerant
NG
Electronic scale for refrigerant charging
OK
Refrigerant cylinder
NG
Charging orifice and packing for refrigerant cylinder
NG
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11.3. Refrigerant piping work
11.3.1. Piping materials
It is recommended that you use copper and copper alloy jointless pipes with a maximum oil adherence of 40 mg/10m. Do not use
pipes that are crushed, deformed, or discolored (especially the inside surface). If these inferior pipes are used, impurities may clog
the expansion valves or capillaries.
Because the pressure of ACs using R410A is higher than those using R22, it is essential that you select materials that are
appropriate for these standards.
The thickness of the copper tubing used for R410A is shown in Table 10. Please be aware that tubing with a thickness of only 0.7
mm is also available on the market, but this should never be used.
Table 10 Copper tube thickness (mm)
Soft pipe
Nominal diameter
1/4
3/8
1/2
5/8
Thickness (mm)
Outside diameter (mm)
6.35
9.52
12.7
15.88
R410A
0.80
0.80
0.80
1.00
(Reference) R22
0.80
0.80
0.80
1.00
11.3.2. Processing and connecting piping materials
When working with refrigerant piping, the following points must
be carefully observed: no moisture or dust must be allowed to
enter the piping, and there must be no refrigerant leaks.
1. Procedure and precautions for flaring work
a. Cut the pipe
Use a pipe cutter, and cut slowly so the pipe will not be
deformed.
b. Remove burrs and clean shavings from the cut surface
If the shape of the pipe end is poor after removing burrs,
or if shavings adhere to the flared area, it may lead to
refrigerant leaks.
To prevent this, turn the cut surface downward and
remove burrs, then clean the surface, carefully.
Fig. 10 Flaring dimensions
c. Insert the flare nut (be sure to use the same nut that is
used on the AC unit)
d. Flaring
Check the clamp bar and the cleanliness of the copper
pipe.
Be sure to use the clamp bar to do the flaring with
accuracy. Use either an R410A flaring tool, or a
conventional flaring tool. Flaring tools come in different
sizes, so be sure to check the size before using. When
using a conventional flaring tool, use the copper pipe
gauge for clearance adjustment, etc., to ensure the
correct A dimension (see Fig. 10)
Fig. 11 Relation between the flare nut structure and flaring tool end
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Nominal
diameter
Outside
diameter
(mm)
1/4
3/8
1/2
5/8
6.35
9.52
12.70
15.88
Nominal
diameter
Outside
diameter
(mm)
1/4
3/8
1/2
6.35
9.52
12.70
Table 11 R410A flaring dimensions
Wall thickness
(mm)
R410A flaring
tool, clutch type
0.8
0.8
0.8
1.0
0
0
0
0
-
0.5
0.5
0.5
0.5
Table 12 R22 flaring dimensions
Wall thickness
(mm)
R22 flaring
tool, clutch type
0.8
0.8
0.8
0 - 0.5
0 - 0.5
0 - 0.5
A (mm)
Conventional flaring tool
Clutch type
Wing-nut type
1.0 - 1.5
1.5 - 2.0
1.0 - 1.5
1.5 - 2.0
1.0 - 1.5
2.0 - 2.5
1.0 - 1.5
2.0 - 2.5
A (mm)
Conventional flaring tool
Clutch type
Wing-nut type
0.5 - 1.0
1.0 - 1.5
0.5 - 1.0
1.0 - 1.5
0.5 - 1.0
1.5 - 2.0
Nominal
diameter
1/4
3/8
1/2
5/8
Table 13 R410A flare and flare nut dimensions Unit: mm
Outside
Wall thickness
A +0, -0.4
B
C
diameter (mm)
(mm)
dimension
dimension
6.35
0.8
9.1
9.2
6.5
9.52
0.8
13.2
13.5
9.7
12.70
0.8
16.6
16.0
12.9
15.88
1.0
19.7
19.0
16.0
D
dimension
13
20
23
25
Flare nut
width
17
22
26
29
Nominal
diameter
1/4
3/8
1/2
Table 14 R22 flare and flare nut dimensions Unit: mm
Outside
Wall thickness
A +0, -0.4
B
C
diameter (mm)
(mm)
dimension
dimension
6.35
0.8
9.0
9.2
6.5
9.52
0.8
13.0
13.5
9.7
12.70
0.8
16.2
16.0
12.9
D
dimension
13
20
20
Flare nut
width
17
22
24
2. Procedure and precautions for flare connection
a. Check to make sure there is no scratches, dust, etc., on the flare and union.
b. Align the flared surface with the axial center of the union.
c. Use a torque wrench, and tighten to the specified torque. The tightening torque for R410A is the same as the conventional
torque value for R22. Be careful, because if the torque is too weak, it may lead to a gas leak. If it is too strong, it may split
the flare nut or make it impossible to remove the flare nut.
Nominal
diameter
1/4
3/8
1/2
5/8
Table 15 R410A tightening torque
Outside
Tightening torque
diameter (mm)
N.m (kgf.cm)
6.35
14 - 18 (140 - 180)
9.52
33 - 42 (330 -420)
12.70
55 (550)
15.88
65 (650)
Torque wrench tightening torque
N.m (kgf.cm)
18 (180)
42 (420)
55 (550)
65 (650)
11.3.3. Storing and managing piping materials
1. Types of piping and their storage
The following is a general classification of the refrigerant pipe materials used for ACs.
Because the gas pressure of R410A is approximately 1.6 times as high as that of R22, copper pipes with the thickness shown
in Table 10, and with minimal impurities must be used. Care must also be taken during storage to ensure that pipes are not
crushed, deformed, or scratched, and that no dust, moisture or other substance enters the pipe interior. When storing sheathed
copper pipes or plain copper pipes, seal the openings by pinching or taping them securely.
2. Makings and management
a. Sheathed copper pipes and copper-element pipes
When using these pipes, check to make sure that they are the stipulated thickness. For flare nuts, be sure to used the same
nut that is used on the AC unit.
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b. Copper pipes
Use only copper pipes with the thickness given in table 10, and with minimal impurities. Because the surface of the pipe is
exposed, you should take special care, and also take measures such as marking the pipes to make sure they are easily
distinguished from other piping materials, to prevent mistaken use.
3. Precautions during refrigerant piping work
Take the following precautions on-site when connecting pipes. (Keep in mind that the need to control the entry of moisture and
dust is even more important that in conventional piping).
a. Keep the open ends of all pipes sealed until connection with AC equipment is complete.
b. Take special care when doing piping work on rainy days. The entering of moisture will degrade the refrigerating machine oil,
and lead to malfunctions in the equipment.
c. Complete all pipe connections in as short a time as possible. If the pipe must be left standing for a long time after removing
the seal, it must be thoroughly purged with nitrogen, or dried with a vacuum pump.
11.4. Installation, transferring, servicing
11.4.1. Inspecting gas leaks with a vacuum pump for new installations (Using new
refrigerant piping)
1. From the viewpoint of protecting the global environment, please do not release refrigerant into the atmosphere.
a. Connect the projecting side (pin-pushing side) of the charging hose for the manifold gauge to the service port of the 3-way
valve. (1)
b. Fully open the handle Lo of the manifold gauge and run the vacuum pump. (2) (If the needle of the low-pressure gauge
instantly reaches vacuum, re-check step a).)
c. Continue the vacuum process for at least 15 minutes, then check to make sure the low-pressure gauge has reached -0.1
MPa (-76 cmHg). Once the vacuum process has finished, fully close the handle Lo of the manifold gauge and stop the
vacuum pump operation, then remove the charging hose that is connected to the vacuum pump adaptor. (Leave the unit in
that condition for 1-2 minutes, and make sure that the needle of the manifold gauge does not return.) (2) and (3)
d. Turn the valve stem of the 2-way valve 90° counter-clockwise to open it, then, after 10 seconds, close it and inspect for a
gas leak (4)
e. Remove the charging hose from the 3-way valve service port, then open both the 2-way valve and 3-way valve. (1) (4) (Turn
the valve stem in the counter-clockwise direction until it gently makes contact. Do not turn it forcefully).
f. Tighten the service port cap with a torque wrench (18 N.m (1.8 kgf.m)). (5) Then tighten the 2-way valve and 3-way valve
caps with a torque wrench (42 N.m (4.2 kgf.m)) or (55 N.m (5.5 kgf.m)). (6)
g. After attaching each of the caps, inspect for a gas leak around the cap area. (5) (6)
Precautions
• Be sure to read the instructions for the vacuum pump,
vacuum pump adaptor and manifold gauge prior to use,
and follow the instructions carefully.
• Make sure that the vacuum pump is filled with oil up to
the designated line on the oil gauge.
• The gas pressure back flow prevention valve on the
charging hose is generally open during use. When you
are removing the charging hose from the service port, it
will come off more easily if you close this valve.
Fig. 12 Vacuum pump air purging configuration
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11.4.2. Transferring (Using new refrigerant piping)
1. Removing the unit
a. Collecting the refrigerant into the outdoor unit by pumping down
The refrigerant can be collected into the outdoor unit (pumping down) by pressing the TEST RUN button, even when the
temperature of the room is low.
• Check to make sure that the valve stems of the 2-way valve and 3-way valve have been opened by turning them counterclockwise. (Remove the valve stem caps and check to see that the valve stems are fully opened position. Always use
a hex wrench (with 4-mm opposing sides) to operate the valve stems.)
• Press the TEST RUN button on the indoor unit, and allow preliminary operation for 5-6 minutes. (TEST RUN mode)
• After stopping the operation, let the unit sit for about 3 minutes, then close the 2-way valve by turning the valve stem in
the clockwise direction.
• Press the TEST RUN button on the indoor unit again, and after 2-3 minutes of operation, turn the valve stem of the 3way valve quickly in the clockwise direction to close it, then stop the operation.
• Tighten the caps of the 2-way valve and 3-way valve to the stipulated torque.
• Remove the connection pipes (liquid side and gas side).
b. Removing the indoor and outdoor units
• Disconnect the pipes and connecting electric cables from between the indoor and outdoor units.
• Put capped flare nuts onto all of the pipe connections of the indoor and outdoor units, to make sure no dust or other
foreign matter enters.
• Remove the indoor and outdoor units.
2. Installing the unit
Install the unit using new refrigerant piping. Follow the instructions in section 4.1 to evacuate the pipes connecting the indoor
and outdoor units, and the pipes of the indoor unit, and check for gas leaks.
11.4.3. AC units replacement (Using existing refrigerant piping)
When replacing an R410A AC unit with another R410A AC unit, you should re-flare the refrigerant piping. Even though the
replacement AC unit uses the R410A, problems occur when, for example, either the AC unit maker or the refrigerating machine oil
is different.
When replacing an R22 AC unit with an R410A AC unit, the following checks and cleaning procedures are necessary but are
difficult to do because of the chemical characteristics of the refrigerating machine oil (as described in items c) and d) of section
About R410A Refrigerant). In this case, you should use new refrigerant piping rather than the existing piping.
1. Piping check
Because of the different pressure characteristics of R22 and R410A, the design pressure for the equipment is 1.6 times
different. The wall thickness of the piping must comply with that shown in Table 10, but this is not easy to check. Also, even if
the thickness is correct, there may be flattened or bent portions midway through the piping due to sharp curves. Buried sections
of the piping also cannot be checked.
2. Pipe cleaning
A large quantity of refrigerating machine oil (mineral oil) adheres to existing pipes due to the refrigeration cycle circulation. If the
pipes are used just as they are for the R410A cycle, the capacity will be lowered due to the incompatibility of this oil with the
R410A, or irregularities may occur in the refrigeration cycle. For this reason, the piping must be thoroughly cleaned, but this is
difficult with the present technology.
11.4.4. Refrigerant compatibility (Using R410A refrigerant in R22 ACs and vice versa)
Do not operate an existing R22 AC with the new R410A refrigerant. Doing so would result in improper functioning of the equipment
or malfunction, and might lead to a major accident such as an explosion in the refrigeration cycle. Similarly, do not operate an
R410A AC with R22 refrigerant. The chemical reaction between the refrigerating machine oil used in R410A ACs and the chlorine
that is contained in R22 would cause the refrigerating machine oil to degrade and lead to malfunction.
11.4.5. Recharging refrigerant during servicing
When recharging is necessary, insert the specified amount of new refrigerant in accordance with the following procedure.
1. Connect the charging hose to the service port of the outdoor unit.
2. Connect the charging hose to the vacuum pump adaptor. At this time, fully open the 2-way valve and 3-way valve.
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3. Fully open the handle Lo of the manifold gauge, turn on the power of the vacuum pump and continue the vacuum process for
at least one hour.
4. Confirm that the low pressure gauge shows a reading of -0.1 Mpa (-76 cmHg), then fully close the handle Lo, and turn off the
vacuum pump. Wait for 1-2 minutes, then check to make sure that the needle of the Low pressure gauge has not returned. See
Fig. 13 for the remaining steps of this procedure.
5. Set the refrigerant cylinder onto the electronic scale, then connect the hose the cylinder and to the connection port for the
electronic scale. (1)(2)
Precaution:
Be sure to set up the cylinder for liquid charging. If you use a cylinder equipped with a siphon tube, you can charge the liquid
without having to turn the cylinder around
6. Remove the charging hose of the manifold gauge from the vacuum pump adaptor, and connect it to the connection port of the
electronic scale. (2)(3)
7. Open the valve of the refrigerant cylinder, then open the charging valve slightly and close it. Next, press the check valve of the
manifold gauge and purge the air. (2)(4) (Watch the liquid refrigerant closely at this point.)
8. After adjusting the electronic scale to zero, open the charging valve, then open the valve Lo of the manifold gauge and charge
with the liquid refrigerant. (2)(5) (Be sure to read the operating instructions for the electronic scale.)
9. If you cannot charge the stipulated amount, operate the unit in the cooling mode while charging a little of the liquid at a time
(about 150 g/time as a guideline). If the charging amount is insufficient from one operation, wait about one minute, then use the
same procedure to do the liquid charging again.
Precaution:
Never use the gas side to allow a larger amount of liquid refrigerant to be charged while operating the unit.
10. Close the charging valve, and after charging the liquid refrigerant inside the charging hose, fully close the valve Lo of the
manifold gauge, and stop the operation of the unit. (2)(5)
11. Quickly remove the charging hose from the service port. (6) If you stop midway through, the refrigerant that is in the cycle will
be discharged.
12. After putting on the caps for the service port and operating valve, inspect around the caps for a gas leak. (6)(7)
Fig. 13 Re-charging refrigerant
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11.4.6. Brazing
As brazing requires sophisticated techniques and experiences, it must be performed by a qualified person.
In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while letting
dry nitrogen gas (N2) flow.
<Brazing Method for Preventing Oxidation>
1. Attach a reducing valve to the nitrogen gas cylinder.
2. Apply a seal onto the clearance between the piping and inserted pipe for the nitrogen gas in order to prevent the nitrogen gas
from flowing backward.
3. When the nitrogen gas is flowing, be sure to keep the piping end open.
4. Adjust the flow rate of nitrogen gas so that it is lower than 0.05 m3/h, or 0.02 MPa (0.2 kgf/cm2) by means of the reducing valve.
5. After taking the steps above, keep the nitrogen gas flowing until the piping cools down to a certain extent (i.e. temperature at
which pipes are touchable with finger).
6. Completely remove the flux after brazing.
Fig. 14 Prevention of Oxidation during Brazing
Cautions during brazing
1. General Cautions
a. The brazing strength should be high as required.
b. After operation, airtightness should be kept under pressurized condition.
c. During brazing do not allow component materials to become damaged due to overheating.
d. The refrigerant pipe work should not become blocked with scale or flux.
e. The brazed part should not restrict the flow in the refrigerant circuit.
f. No corrosion should occur from the brazed part.
2. Prevention of Overheating
Due to heating, the interior and exterior surfaces of treated metal may oxidize. Especially, when the interior of the refrigerant
circuit oxidizes due to overheating, scale occurs and stays in the circuit as dust, thus exerting a fatally adverse effect. So,
make brazing at adequate brazing temperature and with minimum of heating area.
3. Overheating Protection
In order to prevent components near the brazed part from overheating damage or quality deterioration due to flame or heat,
take adequate steps for protection such as (1) by shielding with a metal plate, (2) by using a wet cloth, and (3) by means
of heat absorbent.
4. Movement during Brazing
Eliminate all vibration during brazing to protect brazed joints from cracking and breakage.
5. Oxidation Preventative
In order to improve the brazing efficiency, various types of antioxidant are available on the market. However, the
constituents of these are widely varied, and some are anticipated to corrode the piping materials, or adversely affect HFC
refrigerant, lubricating oil, etc. Exercise care when using an oxidation preventive.
11.4.7. Servicing tips
The drier must also be replaced whenever replacing the refrigerant cycle parts. Replacing the refrigerant cycle parts first
before replacing the drier. The drier is supplied in a vacuum pack. Perform brazing immediately after opening the vacuum
pack, and then start the vacuum within two hours. In addition, the drier also needs to be replaced when the refrigerant has
leaked completely. (Applicable for drier models only)
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12 TROUBLE SHOOTING GUIDE
If test operation does not proceed correctly :
Carry out test operation after approximately 12 hours have passed since the power was turned on (crank case heater is energized). If operation
started by using the remote control within 1 minute of turning on the power, the outdoor unit setting will not be made correctly and correct
operation will not be possible.
If the following symptoms occur after turning on the power, check the wiring connections once more.
12.1. For standard installation
System example
1. The main power is turned on while the indoor-outdoor transmission wires are not connected.
(open circuit at A: power line)
Symptom
Indoor unit : no power supply
Remote control unit : no power supply
Outdoor unit : LED302, 304, 306 on P.C.B flashes
2. The main power is turned on while the indoor-outdoor transmission wires are not connected.
(open circuit at B: power/transmission line)
Symptom
Indoor unit : no power supply
Remote control unit : no power supply
Outdoor unit : LED302, 304, 306 on P.C.B flashes
3. The main power is turned on while the indoor-outdoor transmission wires are not connected.
(open circuit at C: transmission line)
Symptom
Remote control unit : "check" flashes
Error code : F27-01 (indoor/outdoor transmission error)
Indoor unit : LED1 on P.C.B flashes
Outdoor unit : LED302, 304, 306 on P.C.B flashes
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(When remote control display shows "power supply")
Clock setting, and no timer setting
(When remote control display shows "No power supply")
Remedy
1. Turn off the main power.
↓
2. Connect the disconnected wire correctly.
↓
3. Turn on the main power.
↓
4. After 1 minute, start the operation using the remote control.
(indoor unit operation will start according to the remote control setting)
(outdoor unit operation will start after 3-5 minutes)
Note
The "check" display on the remote control and the flashing of LEDs on the P.C.B will not occur immediately. They will appear
3-6 minutes after the main power is turned on.
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12.2. During twin operation
System example
1. The main power is turned on while the transmission wires between the indoor units are not connected.
(open circuit at section A, or B)
Symptom
Nothing abnormal appears on the indoor unit and remote control display due to no power supply.
Indoor unit no.2 : no power supply
Outdoor unit : LED303, 304, 306, 307 on P.C.B flashes (F27-01:indoor and outdoor disconnect error)
2. The main power is turned on while the transmission wires between the indoor units are not connected.
(open circuit at section C)
Symptom
Remote control unit : "check" flashes
Error code : F30-01 (connected indoor capacity error)
Indoor unit : LED1 on P.C.B flashes
Outdoor unit : LED303, 304, 306, 307 on P.C.B flashes (F27-01:indoor and outdoor disconnect error)
3. The main power is turned on while the remote control connection wire is not connected.
(open circuit at section D)
Symptom
Remote control unit : display of "no power supply"
Indoor unit : LED1 on P.C.B flashes
Outdoor unit : LED304, 306, 307 on P.C.B flashes
4. The main power is turned on and the connection wire is all ok.
If operation start in this condition, combination of the L50DBE8 outdoor unit and F24DB4E5 indoor unit will result in abnormal
operation.
Symptom
Remote control unit :"check" flashes
Error code : F30-01 (connected indoor capacity error)
Indoor unit : LED1 on P.C.B flashes
Outdoor unit : LED307 on P.C.B flashes (connected indoor capacity error)
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Remedy
1. Turn off the main power.
↓
2. Connect the disconnected wire correctly.
↓
3. Turn on the main power.
↓
4. After 1 minute, start the operation using the remote control.
(indoor unit operation will start according to the remote control setting)
(outdoor unit operation will start after 3-5 minutes)
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12.3. During group control operation
System example
1. The main power is turned on while the transmission wires between the indoor units are not connected.
(open circuit at section A, or B, or C)
Symptom
Operation of indoor unit No.1 and No.3 is possible.
However "check" flashes in the remote control display for 3-5 minutes after main power is turned on.
Remote control unit :"check" flashes
Error code : F30-01 (indoor capacity error)
Indoor unit : LED1 on P.C.B flashes
Outdoor unit : LED307 on P.C.B flashes
2. The main power is turned on while the remote control connection wire is not connected.
(open circuit at section D)
Symptom
Nothing abnormal appears on the remote control display.
Operation of indoor unit No.1 and No.2 is possible.
However indoor unit No.3 cannot be operated.
Remedy
1. Turn off the main power.
↓
2. Connect the disconnected wire correctly.
↓
3. Turn on the main power.
↓
4. After 1 minute, start the operation using the remote control.
(indoor unit operation will start according to the remote control setting)
(outdoor unit operation will start after 3-5 minutes)
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12.4. Address setting for twin system
System example
1. Automatic address setting (don´t need to set dip-switch).
If the wiring connected properly as above example, the address is set automatically by the main power supply.
An indoor unit which at first can establish the communication with its remote controller will be set as the master.
2. Manual address setting (by dip-switch DSW1 and 2).
When setting the address manually, set the dip-switch of the PC board of the indoor unit as follows;
Example : this shows the address is "11".
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12.5. Address setting for group control system
System example
1. Automatic address setting (don´t need to set dip-switch).
If the wiring connected properly as above example, the AC numbers are set automatically by the main power supply.
An indoor unit with remote control will be set as the master.
2. Manual address setting (by dip-switch DSW1 and 2).
When setting the address manually, set the dip-switch of the PC board of the indoor unit as follows;
Example : this shows the address is "11".
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12.6. Wiring mistake prevention
Improved quality of installation work through adoption of an "connection error prevention" circuit which prevents wiring mistakes.
Connection error with communication wire and power supply wire cause large scale working losses and affect reliability.
If a circuit board with a connection error prevention circuit is used, the relay will not operate if the wires have been connected
incorrectly, so that current will not flow to the control circuit board.
This is designed principally to compensate human error during installation.
Prevention of connection errors
These units are equipped with connection error prevention circuits. If the units do not operate, it is possible that the connection error
prevention circuits have been operated. In such cases, check that the wires ,
or
should be connected correctly.
Note
Wait one minute after turning on the outdoor unit power supply before operating the remote control.
If nothing at all appears in the remote control LCD, check the power supply for the outdoor unit.
Refer to TROUBLESHOOTING chapter.
Note
Do not connect U-NET transmission wires to terminal
,
or
of the indoor and outdoor units.
Do not connect U-NET transmission wires to terminal A, B of the indoor and outdoor units.
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12.7. Test operation and self diagnosis
12.7.1. Test operation
1. Always use a properly-insulated tool to operate the switch on the circuit board.
(Do not use your finger or any metallic object.)
2. Never turn on the power supply unit until all installation work has been completed.
3. Turn on the circuit breaker before test operation extends past 12 hours.
(The crank case heater will be energized, which will warm the compressor to prevent the liquid compression.)
4. Check that the voltage is -10% of the rated voltage (198V) or higher when starting the unit.
The unit will not operate if the voltage is less than -10% of the rated voltage (198V).
5. If test operation continues for more than 30 minutes, test operation finishes and shifts to normal operation.
6. Test operation mode can be selected both cooling or heating mode.
12.7.2. Test operation from the outdoor unit
During emergency operation or when test operation is carried out, the LED on the P.C.B. will turn on.
12.7.3. Test operation using the wired remote control
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1. Check that "COOL"or "HEAT" is displayed on the LCD, and then press the OFF/ON button to start test operation.
2. After pressing the OFF/ON button, press the TEST RUN button within 1 minute.
3. Then, the pipe temperature (gas pipe) will be displayed in the LCD of the remote control.
4. Check that the pipe temperature in the display of the remote control starts dropping after operation has been continuing for
some time.
12.7.4. Self-diagnosis function
The wired remote control display and the self-diagnosis LEDs (green) on the outdoor unit printed circuit board indicate where the
abnormality has occurred.
Recalling the error display.
The air conditioner No."01" appears during normal installation and use.
When using group control, a different number may appear.
The air conditioner No. can be displayed by pressing the air conditioner No. button.
(=same as Temp. up and down button)
When an abnormality occurs at this unit, "check" flashes in the display.
• Press the check button while the display is flashing.
The timer display will change and an error code from F15 to F44 will appear in place of time.
(the temperature setting display will also change to show the air conditioner. No.)
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• Press the timer set button while the error is displayed.
The F15-44 display will change to the detail display.
• How to display the past error message
If the CHECK display on the wired remote control is not flashing, press the CHECK button continuously for 5 seconds or more
to display the past problem details.
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12.8. Emergency operation
When using the wireless remote control and losing the remote controller, emergency operation can be operated by pressing the
auto button in the receiver.
• Press the auto button continuously within 5 seconds
→ emergency operation
If there is an abnormality in the temperature thermistor (disconnect or shorted), indoor unit cannot be operated.
If abnormality detected in the indoor or outdoor unit, turn off the main power supply and find the cause.
Check the resistance of each thermistor of both indoor and outdoor units by refering the resistance table as follows.
Thermistor resistance table
Temperature
-20°C
-10
-5
0
5
10
15
20
25
30
40
50
60
70
80
90
100
Indoor
Room
temperature
thermistor
158.5
87.5
66.1
50.5
38.9
30.3
23.8
18.8
15
12.1
8
5.4
3.7
-
Pipe
temperature
thermistor
211.3
116.7
88.2
67.3
51.9
40.4
31.7
25.1
20
16.1
10.6
7.2
5
3.5
2.5
1.9
1.4
Resistance value (kΩ)±5%
Outdoor
Outdoor
Discharge
Suction
temperature
temperature
temperature
thermistor
thermistor
thermistor
158.5
528.3
47.9
87.5
291.8
27.1
66.1
220.5
20.7
50.5
168.3
15.9
38.9
129.8
12.4
30.3
100.9
9.8
23.8
79.2
7.7
18.8
62.7
6.2
15
50
5
12.1
40.2
4
8
26.5
2.7
5.4
17.9
1.9
3.7
12.4
8.8
6.3
4.7
3.5
-
During outdoor unit emergency operation or test operation, the LED on the P.C.B. will flash.
89
Pipe
temperature
thermistor
47.9
27.1
20.7
15.9
12.4
9.8
7.7
6.2
5
4
2.7
1.9
1.3
0.9
-
Defrost
temperature
thermistor
47.9
27.1
20.7
15.9
12.4
9.8
7.7
6.2
5
4
2.7
1.9
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CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
12.9. Self-diagnosis
• The display screen on the wired remote control unit and the self-diagnosis LEDs (green) on the outdoor unit printed circuit board
in the outdoor unit can be used to indicate where the location of a problem is.
Refer to the table below to remove the cause of the problem, and then re-start the air conditioner system.
• If the problem disappears and operation returns to normal, the CHECK display on the remote control unit will switch off, but the
self-diagnosis LED will remain illuminated until operation is resumed.
• Key indicator
LED Symbol
Wired remote
control unit display
Abnormal
Detail
display
display
F15
-01
F16
-01
F17
-02
F20
-01
-02
F21
-01
F26
-01
F27
-01
-05
F27
-01
-05
F30
-01
-02
F31
-01
-02
-06
-08
-09
-10
F32
-03
-04
-05
-06
-08
-09
-10
F35
-02
Description
Off
Flashing
Illuminated
Outdoor unit printed circuit board LED
Location of problem
Check location
302 303 304 305 306 307 308 309
Drain level Float switch problem Drain pump and drain pipe, indoor unit
connectors CN-DRMTR&CN-TH2
Louver switch problem
Louver motor, decorative panel
connection terminal, or indoor unit louver
motor connectors
D. C Fan Motor problem
Indoor unit D. C Fan motor or connection
terminals
Indoor temperature sensor
Indoor temperature sensor lead wire or
problem
indoor unit connector or CN-TH2
Remote control thermistor
Remote control thermistor
problem
Pipe temp. sensor problem
Pipe temperature sensor lead wire or
(indoor unit)
indoor unit connector CN-TH1
Remote control transmission
Remote control unit cable and connection
problem
terminals
Indoor/outdoor unit
Indoor/outdoor unit connection cable and
disconnection problem
connection terminals, or indoor unit and
outdoor unit power supplies (indoor side)
Indoor/outdoor unit connection Indoor/outdoor unit connection wire
problem
(indoor side)
Indoor/outdoor unit
Indoor/outdoor unit connection cable and
disconnection problem
connection terminals, or indoor unit and
outdoor unit power supplies (outdoor side)
Indoor/outdoor unit connection Indoor/outdoor unit connection wire
error problem
(outdoor side)
System problem
Total capacity for the number of indoor
units is insufficient, or over check the total
capacity and the number of indoor units
Open phase, or reversed phase Check the main power supply terminal
of supply
board connections, or switch over any two
of the power supply wires.
Suction pressure protection
Insufficient refrigerant
High-pressure cut-off
Check the Refrigeration system
4 way valve problem
Check the 4 way valve or lead wire
Freezing problem (Cooling
Check the Refrigerant system
model)
Leakage Refrigerant problem
Check the Refrigerant system
Refrigerant system problem
Insufficient refrigerant or valve operation
(closed)
Inverter protection (Low DC
Check the Power supply
voltage)
Inverter protection (IPM
IPM fault or PCB (MAIN) fault
protection)
Compressor overcurrent
Open phase or lock in compressor
protection
Compressor discharge temp.
Insufficient refrigerant
protection
Inverter protection (PFC
PFC fault (PCB-PFC fault)
protection)
Inverter protection (DC current IPM fault or lock in compressor
protection)
Number of rotation Compressor IPM fault or lock in compressor
problem
D. C Fan motor lock problem
D. C Fan motor lock
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CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
Wired remote
control unit display
Abnormal
Detail
display
display
F40
-01
Outdoor unit printed circuit board LED
Outlet temperature sensor
problem
Compressor suction
temperature sensor problem
-21
Heat exchanger outlet
temperature sensor problem
-31
DEF temperature sensor
problem
Compressor discharge
temperature sensor problem
-51
F41
-02
F42
-11
-11
F44
-01
LED309
Check location
302 303 304 305 306 307 308 309
-11
LED308
Location of problem
High pressure switch open
circuit problem
Low pressure sensor problem
Current detector open circuit
Inverter protection (IPM temp.
sensor problem)
Outlet temperature sensor lead wire,
connector CN-TH1
Suction temperature sensor (SUC T.
TEMP) lead wire, connector CN-TH2 or
valve operation (closed)
Heat exchanger outlet temperature sensor
(COND TEMP) lead wire, connector CNTH1
DEF temperature sensor (PIPE TEMP)
lead wire, connector CN-TH2
Compressor discharge temperature
sensor (DIS T. TEMP) lead wire,
connector CN-DIS
High-pressure switch lead wire, connector
CN-PSW1
Low-pressure sensor lead wire, connector
Outdoor unit P.C. B (NOISE FILTER) fault
or connector ACN2
IPM fault or PCB (MAIN) fault
Unit No. (when twin or triple)
• The LED301 (green) illuminates to indicate that the microprocessor
on the printed circuit board is operating normally.
Master unit problem
If the LED is switched off is flashing irregularly. Check the power
supply, and turn it off and then back on again
Slave unit problem
Example self-diagnosis LED location for CU-L50DBE8.
Note : This PCB is for explanation purpose only. It may be different from actual unit.
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13 TECHNICAL DATA
13.1. Sound data
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13.2. Sound measurement point
13.2.1. Indoor unit
13.2.2. Outdoor unit
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13.3. Discharge and suction pressure
13.3.1. CS-F14DD3E5 x2, CU-L28DBE5
Operation mode : Cooling
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CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
13.3.2. CS-F18DD3E5 x2, CU-L34DBE5
Operation mode : Cooling
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13.4. Capacity and power consumption
13.4.1. Cooling performance
Model name
CS-F14DD3E5 x2 / CU-L28DBE5
CS-F18DD3E5 x2 / CU-L34DBE5
Max cooling capacity
Max capacity (kw)
Max power consumption (kw)
7.5
2.45
12
3.45
Calculation of actual cooling capacity and power consumption:
Example: CS-F14DD3E5 x2 / CU-L28DBE5
• Calculation of the actual cooling capacity and power consumption for the following cooling conditions;
Indoor temperature of 27/19°C and outdoor temperature of 40°C (Standard condition).
Calculation method
1. Find the cooling capacity ratio and the power consumption ratio from the cooling capacity graph and power consumption graph for model CSF14DD3E5 x2 / CU-L28DBE5.
• The cooling capacity ratio indicate at the intersection between an outdoor unit air inlet temperature of 40°C on the horizontal axis and an
indoor unit air inlet temperature on 27/19°C is 0.95.
• The cooling power consumption ratio from the same intersection on the power consumption graph is 1.03.
2. Thus,
• Actual cooling capacity = cooling capacity ratio x rated cooling capacity = 0.95 x 6.5 = 6.18 (kw).
• Actual cooling power consumption = cooling power consumption x rated power consumption = 1.03 x 2.45 = 2.52 (kw).
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13.4.1.1. CS-F14DD3E5 x2, CU-L28DBE5
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Cooling capacity curve
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Cooling power consumption curve
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13.4.1.2. CS-F18DD3E5 x2, CU-L34DBE5
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Cooling capacity curve
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Cooling power consumption curve
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13.4.2. Heating performance
Model name
CS-F14DD3E5 x2 / CU-L28DBE5
CS-F18DD3E5 x2 / CU-L34DBE5
Max heating capacity
Max capacity (kw)
Max power consumption (kw)
8.5
3.25
13.5
4.3
1. Heating capacity when the unit is frosted over or while being defrosted will vary depending on outdoor temperature and the
frosting.
2. Heating capacity must be compensated because it does not take into account the capacity drop incurred when the unit is
frosted over and while it is being defrosted.
3. Therefore, to obtain the integral heating capacity in consideration overfrosting and defrost operations.
4. Heating capacity must be multiplied by the compensation coefficient below.
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13.4.2.1. CS-F14DD3E5 x2, CU-L28DBE5
Heating capacity curve
Outdoor intake air ambient temperature (D.B./ °C)
-20°C -15°C -10°C -5°C
0°C
2°C
5°C
7°C
10°C 15°C
Heating
capacity
compensation
coefficient
0.93
0.93
0.93
0.92
0.84
105
0.88
0.96
1
1
1
>15°C
1
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
Heating power consumption curve
Outdoor intake air ambient temperature (D.B./ °C)
-20°C -15°C -10°C -5°C
0°C
5°C
7°C
10°C 15°C
Heating
capacity
compensation
coefficient
0.93
0.93
0.93
0.92
106
0.86
0.97
1
1
1
>15°C
1
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
13.4.2.2. CS-F18DD3E5 x2, CU-L34DBE5
Heating capacity curve
Outdoor intake air ambient temperature (D.B./ °C)
-20°C -15°C -10°C -5°C
0°C
2°C
5°C
7°C
10°C 15°C
Heating
capacity
compensation
coefficient
0.93
0.93
0.93
0.92
0.84
107
0.88
0.96
1
1
1
>15°C
1
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
Heating power consumption curve
Outdoor intake air ambient temperature (D.B./ °C)
-20°C -15°C -10°C -5°C
0°C
5°C
7°C
10°C 15°C
Heating
capacity
compensation
coefficient
0.93
0.93
0.93
0.92
108
0.86
0.97
1
1
1
>15°C
1
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
13.5. Fan performance
13.5.1. CS-F14DD3E5
Fan performance test report
Fan performance curve
109
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13.5.2. CS-F18DD3E5
Fan performance test report
Fan performance curve
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CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
13.6. Safety device
13.6.1. Indoor unit
Indoor unit
Heat pump model
Cooling only model
For fan motor protection
Internal
protector
For condensation temperature
protection control
Heat exchanger
thermistor
For P.C.B current protection
Current fuse
CS-F14DD3E5
CS-F18DD3E5
OFF
ON
°C
°C
135
85
135
85
OFF
RESET
°C
°C
58
54
58
54
CUT
A
3.15
3.15
Note : protection controlled by P.C.B installed of FM inside.
13.6.2. Outdoor unit
Outdoor unit
For refrigerant cycle
High pressure
switch
For compressor over current
protection for cooling mode
CT1 frequency down
CT2 compressor stop
For compressor over current
protection for heating mode
CT1 frequency down
CT2 compressor stop
Discharge temp protection
Discharge temperature
thermistor (Td)
Liquid compress protection
Crankcase heater
For fan motor protection
Internal
protector (49F)
For condensation temperature
protection control
Heat exchanger
thermistor (Th)
For control protection
Fuse
1MPa = 10.2kgf/cm
Heat pump
model
50Hz
CU-L28DBE5
CU-L34DBE5
MPa
MPa
4.2
3.3
4.2
3.3
OFF
RESET
OFF
A
A
A
12.6
9
17
17
13
22
OFF
RESET
OFF
A
A
A
14.6
9
19
23
13
28
Compressor
OFF
°C
-
W
33
33
OFF
ON
°C
°C
135
87
135
87
OFF
RESET
°C
°C
58
54
58
54
CUT
A
6.3
6.3
OFF
ON
Td
Td 110°C → Comp OFF
110 °C x 3 times within 1 hour → display error code
2
13.7. Operating characteristics
Model
CS-F14DD3E5 x2
CU-L28DBE5
CS-F18DD3E5 x2
CU-L34DBE5
Legend :
Main Power
Source
Voltage
Frequency
(V)
(Hz)
220
50
230
50
240
50
220
50
230
50
240
50
Compressor Motor
S.C.
(A)
9.9
9.5
9.2
13
12.6
12.2
R.C. (A)
COOL / HEAT
8.67 / 9.17
8.27 / 8.77
7.77 / 8.37
11.17 / 13.57
10.77 / 13.07
10.37 / 12.57
S.C. : Starting Current
R.C. : Running Current
IPT : Power Consumption
111
IPT (kW)
COOL / HEAT
1.81 / 1.94
1.81 / 1.94
1.80 / 1.93
2.37 / 2.88
2.37 / 2.88
2.36 / 2.87
Indoor Unit
Fan Motor
R.C.
IPT
(A)
(kW)
0.64 x2
0.139 x2
0.64 x2
0.142 x2
0.64 x2
0.144 x2
0.64 x2
0.139 x2
0.64 x2
0.142 x2
0.64 x2
0.144 x2
Outdoor Unit
Fan Motor
R.C.
IPT
(A)
(kW)
0.55
0.12
0.55
0.12
0.55
0.12
0.55
0.12
0.55
0.12
0.55
0.12
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
14 REPLACEMENT PARTS
14.1. Indoor unit
CS-F14DD3E5, CS-F18DD3E5
112
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
CS-F14DD3E5, CS-F18DD3E5
REF. NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PARTS NAME
Cabinet (Bottom)
Drain pan
Evaporator
Distributor as.
Cabinet (Top)
Filter guide as.
Filter
Duct flange as.(Outlet)
Fan base as.
Casing & Impeller as.
Fan motor
Panel side R as.
Panel side L as.
Terminal board
Capacitor
Transformer
Remote control
Thermistor as.
Coil sensor
PCB assembly (Programed)
PCB assembly (Programed)
PARTS NUMBER
P02-T08030
P42-T02900
P45-T07900
P45-T07830
P42-T03740
P42-T03790
P03-T01520
P42-T03770
P45-T07690
P45-T07950
P06-T05010
P42-T03660
P42-T03760
P06-T04970
P06-T04380
A40C1031
A75C2742
P46-T06800
P46-T06790
P46-T07370
P46-T07380
All parts are supplied from Taiwan (PTW).
113
QUANTITY PER 1 UNIT
CS-F14DD3E5
CS-F18DD3E5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
------1
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
14.2. Outdoor unit
CU-L28DBE5
114
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
CU-L28DBE5
115
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
CU-L28DBE5
116
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
NO.
1
2
3
4
4a
5
6
7
8
9
10
11
12
13
15
17
19
20
21
22
23
24
25
26
27
28
29
31
32
33
34
36
38
44
46
47
48
49
50
50a
54
54a
55
56
57
58
59
60
61
62
63
64
65
66
67
68
100
101
102
103
104
PART DESCRIPTION
BASE PAN ASS’Y
COMPRESSOR
ANTI-VIBRATION BUSHING
NUT FOR COMP. MOUNT.
PACKING
CRANKCASE HEATER
CONDENSER COMPLETE
TUBE ASS’Y(PRESSURE SWITCH)
DISCHARGE MUFFLER
HIGH PRESSURE SWITCH
3-WAYS VALVE (GAS)
4-WAYS VALVE
3-WAYS VALVE (LIQUID)
STRAINER
PIPE HOLDER RUBBER
HOLDER-SERVICE VALVE
ACCUMULATOR ASS’Y
SOUND PROOF MATERIAL-COMP
SOUND PROOF MATERIAL
SOUND-PROOF BOARD ASS’Y
V-COIL COMPLETE
V-COIL COMPLETE
SENSOR-OD TEMP./COIL
SENSOR-COMP.DISCHARGE
SENSOR-COMP.SUCT/DEFROST
CABINET REAR PLATE
CONTROL BOARD ASS’Y
TERMINAL BOARD ASS’Y
TERMINAL BOARD ASS’Y
CAPACITOR-FAN MOTOR (3/460)
ELECTRONIC CONTROLLER (P. SUPPLY)
ELECTRONIC CONTROLLER (DISPLAY)
ELECTRONIC CONTROLLER (NOISE FILTER)
ELECTRONIC CONTROLLER (MAIN)
REACTOR
PARTICULAR PLATE COVER ASS’Y
TERMINAL COVER
NUT FOR TERMINAL COVER
BRACKET FAN MOTOR
SCREW-BRACKET FAN MOTOR
FAN MOTOR
SCREW-FAN MOTOR
PROPELLER FAN
NUT for PROPELLER FAN
CABINET FRONT PLATE
DISCHARGE GRILLE
CABINET SIDE PLATE
WIRE NET
CABINET TOP PLATE COMPLETE
ACCESSORY COMPLETE
BAG-COMPLETE (L-TUBE)
PIPE COVER (FRONT)
PIPE COVER (BACK)
CABINET FRONT PLATE COMPLETE
HANDLE
TUBE ASS’Y (CAPILLARY TUBE)
LEADWIRE-COMPRESSOR
SPRING FOR SENSOR
4-WAYS VALVE COMPLETE
CONDENSER SIDE PLATE
TUBE ASS’Y(VALVE+STRAINER)
INSTALLATION INSTRUCTION
QTY.
1
1
3
3
1
1
1
1
1
1
1
1
1
2
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
2
1
4
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
4
1
1
1
1
All parts are supplied from PHAAM, Malaysia (Vendor Code: 061)
117
CU-L28DBE5
CWD52K1098
5KD240XAA21
CWH50055
CWH4582065
CWB811017
CWA341012
CWB32C1464
CWT023311
CWB121013
CWA101007
CWB011251
CWB001026
CWB011252
CWB111032
CWG251021
CWD911425
CWB131025A
CWG302245
CWG302246
CWH151075
CWA43C2169
CWA43C2128
CWA50C2213
CWA50C2214
CWA50C2215
CWE02C1013
CWH10K1046
CWA28K1085
CWA28K1076
DS461305QP-A
CWA743402
CWA743403
CWA743480
CWA73C1681R
CWA421066
CWD90K1023
CWH171035
CWH7080300
CWD54K1010
CWH551040
CWA951363
CWH551040
CWH001019
CWH561038
CWE061088A
CWE201073
CWE04K1019A
CWD041060A
CWE03C1021
CWH82C1105
CWG87C2030
CWD601074A
CWD601075A
CWE06C1086
CWE161008
CWT07K1184
CWA67C5138
CWH711010
CWB00C1017
CWD932423
CWT023313
CWF612612
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
CU-L34DBE5
118
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
CU-L34DBE5
119
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
CU-L34DBE5
120
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
NO.
1
2
3
4
4a
5
6
7
8
9
10
11
12
13
15
17
19
20
21
22
23
24
25
26
27
28
29
31
32
33
34
36
38
44
46
47
48
49
50
50a
54
54a
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
100
101
102
103
PART DESCRIPTION
BASE PAN ASS’Y
COMPRESSOR
ANTI-VIBRATION BUSHING
NUT FOR COMP. MOUNT.
PACKING
CRANKCASE HEATER
CONDENSER COMPLETE
TUBE ASS’Y(PRESSURE SWITCH)
DISCHARGE MUFFLER
HIGH PRESSURE SWITCH
3-WAYS VALVE (GAS)
4-WAYS VALVE
3-WAYS VALVE (LIQUID)
STRAINER
PIPE HOLDER RUBBER
HOLDER-SERVICE VALVE
ACCUMULATOR ASS’Y
SOUND PROOF MATERIAL-COMP
SOUND PROOF MATERIAL
SOUND-PROOF BOARD ASS’Y
V-COIL COMPLETE
V-COIL COMPLETE
SENSOR-OD TEMP./COIL
SENSOR-COMP.DISCHARGE
SENSOR-COMP.SUCT/DEFROST
CABINET REAR PLATE
CONTROL BOARD ASS’Y
TERMINAL BOARD ASS’Y
TERMINAL BOARD ASS’Y
CAPACITOR-FAN MOTOR (3/460)
ELECTRONIC CONTROLLER (P. SUPPLY)
ELECTRONIC CONTROLLER (DISPLAY)
ELECTRONIC CONTROLLER (NOISE FILTER)
ELECTRONIC CONTROLLER (MAIN)
REACTOR
PARTICULAR PLATE COVER ASS’Y
TERMINAL COVER
NUT FOR TERMINAL COVER
BRACKET FAN MOTOR
SCREW-BRACKET FAN MOTOR
FAN MOTOR
SCREW-FAN MOTOR
PROPELLER FAN
NUT for PROPELLER FAN
CABINET FRONT PLATE
DISCHARGE GRILLE
CABINET SIDE PLATE
WIRE NET
CABINET TOP PLATE COMPLETE
ACCESSORY COMPLETE
BAG-COMPLETE (L-TUBE)
PIPE COVER (FRONT)
PIPE COVER (BACK)
CABINET FRONT PLATE COMPLETE
HANDLE
TUBE ASS’Y (CAPILLARY TUBE)
MAGNETIC SWITCH
TUBE ASS’Y (STRAINER AND EXP. VALVE)
LEADWIRE-COMPRESSOR
SPRING FOR SENSOR
4-WAYS VALVE COMPLETE
CONDENSER SIDE PLATE
INSTALLATION INSTRUCTION
QTY.
1
1
3
3
3
1
1
1
1
1
1
1
1
2
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
2
1
1
1
1
4
2
8
2
2
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
4
1
1
1
All parts are supplied from PHAAM, Malaysia (Vendor Code: 061)
121
CU-L34DBE5
CWD52K1110
5JD420XAA22
CWH50055
CWH4582065
CWB811017
CWA341013
CWB32C1508
CWT023392
CWB121014
CWA101007
CWB011251
CWB001046
CWB011292
CWB111032
CWG251021
CWD911425
CWB131026A
CWG302265
CWG302266
CWH15K1019
CWA43C2169
CWA43C2177
CWA50C2229
CWA50C2230
CWA50C2231
CWE02C1014
CWH10K1049
CWA28K1107
CWA28K1076
DS461305QP-A
CWA743568
CWA743566
CWA743567
CWA73C1682R
CWA421079
CWD90K1023
CWH171035
CWH7080300
CWD54K1014
CWH551040
CWA951363
CWH551040
CWH001021
CWH561038
CWE061098A
CWE201073
CWE04K1023A
CWD041068A
CWE03C1021
CWH82C1105
CWG87C2030
CWD601074A
CWD601075A
CWE06C1091
CWE161008
CWT07K1196
CWA001023
CWT023394
CWA67C5267
CWH711010
CWB00C1022
CWD932477
CWF612612
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
15 ELECTRONIC CIRCUIT DIAGRAM
15.1. Indoor unit
SCHEMATIC DIAGRAM 1/4
CN-OPT2
TO CN-OPT2
CN-TIMER
6 5 4 3 2 1
0.047 25V
0.047 25V
0.047 25V
0.047 25V
10k
20k
40.2k
80.6k
C68
C69
C70
C71
R91
R92
R93
R94
10.0k 1%
10.0k 1%
10.0k 1%
10.0k 1%
10k 1%
20k 1%
40.2k 1%
80.6k 1%
R77
R78
R79
R80
R87
R88
R89
R90
1
2
1%
1%
1%
1%
R76
20k 1%
8 7 6 5
SW1
8 7 6 5
SW2
4 3 2 1
1k
1k
1k
1k
4 3 2 1
R86
10k 1%
C56
0.01
C57
0.01
R81
R84
R82
R83
R85
10k 1%
CN-TH1
PIPE TEMP. SENSOR 2
(20k 3950)
PIPE TEMP. SENSOR 1
(20k 3950)
4
3
2
1
AIR TEMP. SENSOR
(15k 3950)
4
3
2
1
R64
20.0k
1%
R65
20.0k
1%
R67
1k
R68
1k
R69 1k
R66
15.0k
1%
C50
1
6.3V
C51
1
6.3V
C52
1
6.3V
+ C44
10
50V
C45
0.01
R60
100k
CN-REM
(XH3)
C42
0.01
3
2
1
PIN3
NONE
IC4
BD47426
I
O
NC G G + C43
2.2
50V
NRST
PIN4
NONE
FLOAT
SM
LF 2
SS11V-R04520
NMOD
e
b 10k
c
10k
10k b
c
Q12
DTA114EKA
10k
e
Q13
RT1N141C
D17
HRU0183A2
L1
820 H
R43
3.9k
D15
DAN217
R51
R52
C39
2.2 25V
R57
27k
C41
100p
(JC)
4
3
PC5
TLP328
R55
1 750
2 2.2
25V
C40
+
RY-REM
REMOTE
CONTROLLER
R61
150k
X1
16.8MHz
15pFx2
D8
L2
Q11
UN2223TX c 820 H C38
0.01
b 18k
D18
HRU0103A2
10k
e
Q7
e
2SB1198K
c
68 1/4W
68 1/4W
c
C37
0.01
ZD3
UDZS308
R56
Q9
4.7k
e
2SB119EK
D16
DAN217 R53 68 1/4W c
R54 68 1/4W
Q8
2SD1782Ke
R47
3.9k
Q10
2SD1782K e
D14
DAN202U
R44
b R45
IC5
TC7500F
C33
5
2200p 4 1
4.7k
3 2
4.7k
C34
2200p
R46
3.9k
b
R48
4.7k
b
R49
4.7k
C35
2200p
c
ZD4
UDZS308
b
R50
3.9k
-
122
D13
DAP202U
C36
2200p
C32
0.01
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
10k 1%
R108
22k
C67
0.1
6.3V
R107
10k
1000P
1000P
1000P
1000P
1000P
C76
C77
C78
C79
C80
R106
5.1k
1000P
1000P
1000P
1000P
C28
0.01
R122
CN-DISP
R103
360
R133
360
R134
360
R135
360
R136
360
R104 360 1%
10 9 8 7 6 5 4 3 2 1
R146
R145
R144
R143
R142
R141
R140
R139
R147
R138
1k
C72
C73
C74
C75
R131
10k
R130
10k
1 2 3 4 5 6 7 8 9 10 11 12 13
TO CN-DISP
R137
1k
C18
0.1 C30
25V 0.01
TO CN-OPT3
1k
1k
1k
1k
1k
1k
1k
1k
1k
CN-OPT3
SCHEMATIC DIAGRAM 2/4
C59
3300p
R123
10k
R118
10k
c
R148
680
Q15
2SC3052F
b
R115
1k
C63 e
1000p
R116
5.6k
1/4W
R117
47k
1/4W
LED1
PC7
TLP421
(BL)
4
1
3
2
R12
4.7
P64
P65
P66
P67
P70
P71
P72
P73
P74
P75
P76
P77
P87
P86
P85
P84
P83
P82
P81
P80
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
C60
1
6.3V
1 VSS3
P63 60
2 AN0
P62 59
3 AN1
P61 58
4 AN2
P60 57
5 AN3
VDD2 56
6 AN4
P54 55
7 AN5
VSS2 54
P53 53
8 AN6
P52 52
9 AN7
IC1
A52101C62PD
10 VREF+
P34
P33
SCL
SB12
SB02
P24
IRQ3
IRQ2
IRQ1
IRQ0
P35 41
TM71O
P40 42
20 P01
P13
P41 43
19 P00
P12
P42 44
18 NRST
P11
P43 45
17 WW0D
RMOUT
P44 46
16 X0
P06
P45 47
15 X1
P05
P46 48
14 VSS1
RXD1
P47 49
13 OCS1
TXD1
P50 50
12 OSC2
P02
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
RTIN
b 1
1
R105
10k
R34
10k
10k b
R100
1k
R101
10k
4.7k
c
C31
0.01
Q2
RT1P432C
R42
10k
R156
0
R37
IC2
BR9080AF 10k
1
3
4
R102
1k
2
R/B
/cc
VC
CS
D0
SK
GND
D1
7
2
4
6
8
R157
0
R155
0
D12
R38
10k
D11
C29
0.01
1
3
5
7
R36
10k
R35
10k
NONE
PIN2
e
C58
0.01
JEM-A
R149
10k
P51 51
11 VDD1
JP1
8
6
C24
R59
1k
5
R39
10k
D18
D20
C12
R41
1k
C27
0.01
CN-LVVSB
1 2 3 4
3 2 1
LOUVER
LIMIT
SB
FOR CEILING MODEL
123
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
SCHEMATIC DIAGRAM 3/4
Q18
2SC18741 (FA)
e
c
R99
1.15k 1%
ZD8
RD16UJ (N3)
b
ZD5
RD4.7UJ
e
R98
680
b 10k
4.7k
1
PC8
TLP421
RY-CON
GGE-134P
LF3
R95 SY-110AV D1
10
IA5-E
1/4W
600V 1A
ZD9
RD6.2E
ZD10
RD6.2E
R110
10k
C5
1000p
250VAC
4
c
2
b
3
R111
NONE Q14
2SC3052F R113
c
10
R112
b
1k
e
R114
C62
4.7k
0.1
25V
1
3
2
C81
275VAC
R96
39k
2W
D19
4
R63
10k
1
R97
39k
2W
Q16
R151
e
1.8k 2SC1841
(FA)
Q2
c
RT1P432C
PC6
TLP421
(BL)
G 3.15A L
250V
FUSE1
ZNR4
R126
4.7k
1
Q21
CR5
2
c
6
SSR2
R2
R1
b 15k
4
516V
18k
e
3
2
4
1
SSR1
CR1 (13) 1230
Q28 c
CR2 (13) 1230
b 10k
10k
CR3 (13) 1230
e
RY-N
6558-14
RY-N
6558-14
RY-L
65N8-1A
C-FV1
(RED)
C-FV2
(BLU)
IC3
A52C7212AHF
a
D81
S116(1)683
l
12V
b
C9
110
16V
IC6
0.01
C6
2200
35V
(FC)
C7
0.01
CN-T
53728-0612
(RED)
IC7
A524537805F
a
082
5113(2)618
l
5V
b
R3
1k
10k
C22
0.01
276
c
C3
0.01
b
1
a
C21
3300
35V
(FC)
C17
0.01
Q1
1
e
C23
100
16V
D1D114EX
R16
5.1k
C16
5.1
25V
9
16
2
15
3
14
4
13
5
12
6
11
7
1
9
RY-N
RY-L
D22
10
8
15
D23
3
14
13
5
12
6
11
7
10
66E-124P
RY-COM
IC11
8
LN2383A02
3 2 1
CN-ABN (IH3) (RED)
124
RY-M
16
2
4
IC10
LN2863A02
1
D24
C25
+
C64
26
10k
c
C65
Q19
RTINI41C
b 10k
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
SCHEMATIC DIAGRAM 4/4
ELECTRONIC CONTROL UNIT
CN-PWR
5
4
3
2
1
3
2
R311
R312
R313
R314
R301
R307
R308
R309
R310
80.6k 1%
10k 1%
20k 1%
40.2k 1%
80.6k 1%
10k 1%
20k 1%
40.2k 1%
80.6k 1%
1
3 4 2 1
SW301
3 4 2 1
SW302
SW303
COM
COM
CN-LYN
LND2 DC782
CN-OPT2
3
1
CN-DRV
3
1
DNDN DC782
6 5 4 3 2 1
FROM CN-OPT2
CN-FM
(VH9-5)
SW201
9
7
M
5
FAN MOTOR
3
R201
1k 1%
CN-DISP
BZ201
TRANSFORNER
RED
WHITE
BLACK
RED
WHITE
BLACK
47
5.1k
R203
+
2 Vcc
1 Vout
PD
C201
47
25V
1 2 3 4 5 6 7 8 9 10
FROM CN-DISP
7 6 5 4 3 2 1
5 4 3 2 1
C401
C402
C403
C404
RY401
RY402
RY403
TN2
1
2
3
4
5
6
IC201
3 GND
CN1
CN-T
728-0612
(RED)
C202
C-FV2
(BLU)
LED201
LED202
LED203
LED204
LED205
C
R202
1
C-FV1
(RED)
0.01
0.01
0.01
0.01
CN-EV
EXPAND
VALVE
2
SSR401
4
1
TM1
3
2
SSR402
4
1
c
RT402
b
RT401
IC401
LM2003ADR
C405
0.01
25V
Q401
RT1N141C
c
b
C407
0.01
CN-OPT2
+
RT403
C406
0.01
25V
C64
6
5
4
3
2
1
3
1 2 3 4 5 6 7 8 9 10 11 12 13
FROM CN-OPT3
125
Q402
RT1N141C
11
10
9
8
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
15.2. Outdoor unit
SCHEMATIC
A
DIAGRAM 1/7
ELECTRONIC CONTROL UNIT
(WHT)
CN-ACN
C411
C405
AC250V AC250V
4700p
4700p (BLK)
CH-BL
(WE)
(WE) DF22R-1P
(WHT)
C402
CN-WH
1
DF22-1P
LF401
SC-30-12JN
C401
1
CT
C403 NONE
C404 AC250V
4700p (WE)
C406 NONE
C403 NONE
FG1(GRN)
#187
CU-L34DBE5
CU-L43DBE5
DCP-IN
C201
800
400v
C408
AC250V
4700p
(WE)
DCN-IN
C404
CN-NF (XH4)
C409 NONE
DB
ACL2
(BLK)
#250
ACN2
(BHT)
#250
CT400
ETQ19Z598Z
C202
800
400v
C201
800
400v
DCP-OUT
C203
800
400v
DCN-IN
RT-PTR2
C403
C408 AC250V 4700p (WE)
C407 AC250V 4700p (WE)
C416 AC250V 4700p (WE)
C415 AC250V 4700p (WE)
C402
1
C414 NONE
C207
50
350v
AC-C
RY-PWR2
G4A-1A-PE-MA
CN-NF
ZNR 402
510V
C414 AC250V 4700p (WE)
FG1(GRN)
A67C5203
ZNR 401
510V
C413 AC250V 4700p (WE)
ZNR 400
510V
C405 4700p AC250V
L400
ACN1
#250 (WHT)
C411 4700p
AC250V
N
B-7
ZNR 404
NONE
C206
50
350v
C208 C209
NONE NONE
CU-L24DBE5
CU-L28DBE5
DCP-IN
LF400
LF401
GOB801P0001 GOB801P0001
C401
1
ACL1
#250 (BLK)
L
C202 C203 C204
800
800
800
400v 400v 400v
C206 R201
4700p 100k
350v
1%
L201
ELECTRONIC CONTROL UNIT
C413 NONE
CU-L24DBE5
CU-L28DBE5
C412
AC250V
4700p
(WE)
#250 AC-WHT
(WHT)
ZNP 400
510V
C410 NONE
C409 NONE
ZNP 400
510V
ZNP 403
510V
DF22-1P
C407 AC250V
4700p (WE)
N
MAGNET RELAY
#250 AC-BLK
(BLK)
LF400
SC-30-12JN
DF22R-1P (BLK) CN-ACL
L
C410 NONE
CU-L34DBE5
CU-L43DBE5
AC-WHT
(WHT)
#250
R202
100k
1%
C204
NONE
R201
100k
1%
R203
100k
1%
C206
50
350v
AC-C
AC-BLK
#250 (BLK)
1
2
CN-CON
3
2
1
R78
39k 2W
R277
10k
1
T1
ST-213
T
9
2
RY-COM
Y
GBE-134P
CN-LF
R91
10
5
D13
D1F68
4
D17
D1F60
600V 1A
3
D14 2
R79
39k 2W
+
3
D51
Q13 c
2SB789A
b
1W 120V
R276
24k
1/4W
C44
220
100V
e
c
e
ZD6
RD1005
200mW
R275
22k
1%
PC6
TLP421 (BL3)
1
4
D45
1SS355T
2
c
D52
D1F60
600V 1A e
C39
0.01
e
Q14
25D2641
e 6A 110V
ZD3
RD5.1UJ
R84
(N2)
130
1W
200mW
R57
24k
1/4W
R252
560
2W
R86
1k
Q22
2SC3052
b
R92
4.7k
b
1
2
3
R41
560
2W
R85
1k
R83
470
D50
D18
D1F60
600V 1A
D19
D1F60
600V
1A
R53
1.5k
PC4
TLP421 BL
(BL)
1
4
Q31
b 2SD2394E
R65
150
3
ZD2
RD39JS
c
(AB2)
b
Q9
2SC3052 e
2SC3052
Q32
c
b
R87
3.3k 1%
4
R86
680 1%
1
e
R76
10k
126
3
2
PC5
TLP421 (BL)
e
R88
5.6k
1%
R89
47k
1%
4.7k b
10k
c Q21
RT1N1432C
IC1
PIN 62
c
b
e
Q23
2SC3052
R259
27.4k
1%
C63
1000p
C207
50
350v
DCN-OUT
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
SCHEMATIC
A
DIAGRAM 2/7
ACL
AC-BLK
AC-FME*
ACL 1
ACL 2
R105
7.5 5%
ZNR1
CN-Y1
RY-Y1
DB2
PIC1
100
D28
1A5-E
600V 1A
1
2
CR1
FUSE 2
CN-Y2
2
R204
100k
1%
R205
100k
1%
PIC2
100
200V
PIC2
100
200V
RY-Y2
CN-HOT
RY-N01
CN-FM3
FM1
R278
1k 1%
SS91
2
3
ZNR2
1
4
2
RED C34 C35*
0.1 1000p
16V
DCP
DCN
BLK
2
CN-FM4
R180
39k
2W
RY-HT
1
C34
1000p
1
2
2
CU-L24DBE5
CU-L28DBE5
CN-RY1
1
D21
EGB1
C132
0.1
16V
R64
10k
R56
47k
4
R53
1.5k
R62
4.7k
RY-PRY2
R181
39k 2W
2
3
R60
1k
c
b
Q20
2SC3052
R63
4.7k
C33
0.01
R59
39k
R
2
C40
3900p
C39
0.01
e
CR4
e
CN-RY1
Q11
C1
b
e
1
c
D27
2
2
2
1
R54
47k
1%
PC3
TLP620GB
R278
(GR)
1
4
2
1
16
6
C32
D7
1SS355T
SS92
CN-HT
CN-RY2
7
6
5
4
3
1
2
CN-RY2
11
1
12
2
13
3
14
4
ZNR3
1
FM2
C31
D12
1SS355T
CR3
0.33
120
D11
1SS355T
2
R55
1k 1%
IC9
9 ULM2003ADR
PIC4
CR2
1
4.7k
b
10k
c
CN-TH1
4
OUTDOOR TEMP. SENSOR
(15k 3950)
PIPE TEMP. SENSOR
(4.96k 3950)
R100
15.0k
1%
R101
7.50k
1%
C45
1
6.3V
C46
1
6.3V
Q5
D1
2
RY-PWR2
3
DISCHARGE TEMP. SENSOR
(15k 3950)
c
b
Q7
R274
e
R273
1
R104
7.50k
1%
CN-TH2
4
DEFROST TEMP. SENSOR
(4.96k 3950)
SUC TEMP. SENSOR
(4.96k 3950)
2
1
R260
1
C128
0.047
25V
+ C127
10
50V
R263
R258
8
3
4
2
R264
7
C123
0.1
16V
R265
20.4k
1%
C47
1
6.3V
R113
C49
1
6.3V
R259
27.4k
1%
IC14
R102
4.99k
1%
R114
12.1k
1%
R121 30k
+ C124
100
16V
BD4
5
6
+ C125
10
TL3472
50V
R261
1.13k
1%
G
R262
39.2k
1%
127
C59
0.1
16V
THS1
D4CE35030002
CU-L34DBE5
CU-L43DBE5
R12
10k 1%
1
DCN-OUT
R11
100 1%
b
Q6
2SC3441 e
ZD1
RD10EB2
RT-C
D6
1SS355T
C211
800
400v
1
R203
100k
1%
D5
1SS355T
C210
800
400v
DCP-OUT
R202
100k
1%
RT-P121
R6
33 1% 1/4W
c
200V
C53
1
6.3V
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
SCHEMATIC
A
DIAGRAM 3/7
R55
k 1%
C68
0.047
25V
V
1 2 3
JP1
+
10
R158
15k
1%
D21
GB1Z
100 99 98
96 95
93
91
89 88
86 85 84 83
81
2 4 6 8 10
79 78 77 76
CN-CPU
R54
20k
75
2
74
3
73
4
72
5
71
6
70
7
69
8
68
R253
R254
1
R255
R256
1 3 5 7 9
R64
10k
R269
10k
67
66
10
65
11
C133 0.1
16V
64
IC1
MN103S52GPJ
13
63
62
61
60
16
59
17
18
58
19
57
20
56
21
55
54
22
23
53
24
52
25
51
26 27 28 29 30 31 32 33
35
37 3
42 43
45
47 48 49 50
R257
2.2k
R120
R119
R118
R106
1k
+
C60 C61
10 0.047
25V
C62
0.047
25V
D16
HRU0103A2
R140
10k
D15
HRU0103A2
+
IC7
1
16
6
RT-DT
X1
R68
D10
R69
C55
1 2 3 4
c
Q24
RT1N432C
C65
0.047
25V
CN-LP51
10k
R107
10k
CN-LPS1
C51
0.047
25V
1
+
C41
270
16V
128
R102
10k
1%
2
D27
D29
D23
R58
C42
0.01
R138
5.6k
10MHZ
15p X 2
CN-C1
C64
100 16V
R67
D44
D24
1SS355T
1
2
3
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
EXPAND VALVE
CN-EV
SCHEMATIC
A
DIAGRAM 4/7
1 2 3 4 5 6
D46
D33
D34
D35
D36
IC7
9
7
6
5
4
3
2
10
11
12
13
14
15
9
1A5-E
600V 1A
C129
56
450V
C22
R32
0.01
47k 630V
2W (ECQE)
R46
47k
2W
D2
AMD1Z
HRU8L8
3A2 X 4
C10
0.22
D47
1A5-E
600V 1A
8
1
2
3
4
5
6
7
+
220p
2kV
IC8
16
15
14
13
12
11
10
D20
EG01C
1
4
R34
4.7
6
D21
EGD1Z
T1
ETS29AK7M1AC
C23
R35
R47
8
470
11
3k
3k
25V
1/4W
1/4W
(FC)
7
12
D22
R70
ALD1Z
0.47 1/2W
15
6
16 D25
D24
3
RL4Z AL01Z
5
7
C74 + C93 +
1000
680
25V
16kV
18
IC4
NJM78M05F
R45
1k
2
8
3
R39
1.50k
1%
SW7
ZD4
MAZ4047
R33
0.91
1W
R43
C92
c
IC17
TL431
b
C28
680p
(JC)
R94
1k 1%
C86
R97
0.047
10k
1%
25V
2 3
C
CN-DISP
3 2 1
CN-DISP
1 2
6 7 8 9
1
SW4
SW6
SW3
SW2
SW1
SW5
R93
1k 1%
R96
C85
0.047
1%
25V
C20
10 +
50V
2
R92
1k 1%
C84
R98
0.047
10k
25V
1%
3 4 2 1
CN-DISP2
CT 301
R328
R329
R330
R331
R322 20.0K
20
1%
R321 40
40.2K 1%
R320 80
80.6K 1%
CN-C1
1
2
3
C27
R37 0.1
27k 16V
1/4W
C84
0.047
25V
C
CN-LF
1
2
3
LF300
1 2 3
129
LF301
R49
17.4k
1%
R42
1k
1/4W
PC7
1 PC817E74
35V
(FC)
3
R66
470
2%
17
D26
AL01Z
2
STR-VIS2
2
C26 +
470
25V
(FC)
Ref
C25
R38
15.0k
1%
R40
1.54k
1%
R36
301
1%
C91
0.01
R50
1.78k
1%
1 5V 2
2
C126 +
220
10V
(FC)
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
ACP
AC-C
SCHEMATIC
A
DIAGRAM 5/7
R9
1.8k
R1
470
RY-C
DB1
c
Q1
1WBH50060 e
Q3
c
2SA1366
b
Q4
c
2SA1366
6
IC10
C12
0.01
C3
0.047
25V
b
1
C26
0.1
25V
PC2
TLP421
R19
49.9k 1%
4
R8
18k
3
8
3
IC10 4
LM3930T
2
1
C26
0.1 25V
C6
0.01
e
10k
b
10k
c
Q8
RT1N432C
R/B
4
GND
CS
D0
SK
D1
GND
R20
15.0k
1%
IC11
8
1
3
2
R13
100
C7
C5
0.82 0.01
(ECQV)
R14
20.0k
1%
R15
25.5k
1%
8
6 BR9080AF-WE2
5
7
2
4
6
8
R16
3.74k 1%
7
R17
3.74k
1%
5
6
IC11
LM393DT
C10
0.01
R26
464k
1%
R29
464k
1%
R27
464k
1%
R38
464k
1%
R28
10.7k
1%
R31
11.0k
1%
C14
1000p
R15
25.5k
1%
C15
0.01
R48
10k
1%
R145 R146 R147
10k
10k 10k
IC6
2
VCC
Q12
e RT1P432C
4.7k
b
10k
e R21 c
R44
100
7.87k 1%
1%
C9
R22
0.82
2.74k 1%
25V
R18
1.48k
1%
C4 4
0.047
25V
3
C11
0.01
25V
Q4
RT1P432C c
b 4.7k
10k
2
0.039
1
FUSE 1
R25
51.1k
1%
C2
0.047
25V
e
R7
200
1/4W
R5
C16
1
6.3V
C13
1000p 25V
R2
47
R3
10k
R4
10.0
1/4W 1%
C17
1
6.3V
2
3
R24
9.53k
1%
5
7
b
e
R23
D3 1k 1%
PC1
TLP421 (BL)
4
1
1
3
5
7
CN21
130
IC13
8
1
3
4
2
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
SCHEMATIC
A
DIAGRAM 6/7
R200
47
ZD5
RD28ER
D30
D31
C101 +
47
25V
C103+
47
25V
C105 +
47
25V
(FC)
Q10
C102
0.22
25V
HVIC1
Vcc
Vb
IN
HO
COM
Vs
C104
0.22
25V
P
CORE
U
U
RED
V
V
BLUE
HVIC2
Vcc
Vb
IN
HO
COM
Vs
C106
0.22
25V
COMPRESSOR
HVIC3
Vcc
Vb
IN
HO
COM
Vs
W
W
YELLOW
LVIC
Vcc
U OUT
IN(X)
IN(Y)
V OUT
C118
IN(Z)
VFO
C1
25V
W OUT
Vno
N
CIN
GND
CFO
C115
C116
R206
06
IC13
LM3930T
5
7
1%
1000p
0.22 25V
0.22 25V
0.22 25V
0.22 25V
1000p
C99
C107
C108
C109
C110
C111
C112 1000p
1000p
C98
1.24k
C113 1000p
1000p
C97
6
R16
39k
1%
HRU0103A2
CN-FN1
e
R16
39k
1%
10k b
R162
1k
R166
1k
4.7k
c Q15
RT1P432C
e
b 10k
R164
2k
e
C72
1000p
R170
10.0k
1%
R168
4.47k
1%
4.7k
Q27
c
RT1P432C
b 4.7k
10k
C70
0.01
1
2
3
4
5
6
7
R172
5.11k
1%
c
Q25
RT1R432C
C74 +
10
R174
200k
1%
C78
C80
0.22
630V 0.047
(ECQE) 25V
e
10k b
CN-FN2
4.7k
c Q16
RT1P432C
R163
1k
e
R165
2k
b 10k
e
R167
1k
C71
0.01
b 4.7k
C73
1000p
10k
c
Q26
RT1R432C
R169
4.42k
1%
1
2
3
4
5
6
7
R171
10.0k
1%
4.7k
Q28
c
RT1P432C
R173
5.11k
1%
131
C75 +
10
R175
200k
1%
C79
C81
0.22
630V 0.047
(ECQE) 25V
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
SCHEMATIC
A
DIAGRAM 7/7
ELECTRONIC CONTROL UNIT
TABLE 1
CODE No.
A743401
A743564
NONE
17.4k 1%
2.61k 1%
33.2k 1%
4.99k 1%
4.99k 1%
NONE
NONE
VH3-2(GRN)
0.01µ
G3WC-202P
NONE
NONE
NONE
NONE
NONE
0.03Ω 5W
16.9k 1%
4.02k 1%
13.7k 1%
5.23k 1%
5.23k 1%
←
←
←
←
←
←
VH3-2(YLW)
0.01µ
G3MC-202P
←
ELECTRONIC CONTROL UNIT COMPLETE
TABLE 3
NOTE
2
R205
R206
R258
R260
R263
R264
FW-BLOCK1
FW-BLOCK2
CN-FM3
C31
SSR1
ZNR2
CN-FM4
C32
SSR2
ZNR3
RY-V1
CN-V1
CR1
RY-V2
CN-V2
CR2
NONE
NONE
NONE
NONE
NONE
NONE
CN-LPS1
NONE
C55 1µ
6.3V
AC-BLK
A67C5179
AC-WHT A67C5180
U.V.W
A28062
R58 1.65k 1%
R67 698Ω 1%
R68
0Ω
R69
NONE
PTC4
NONE
RY-PWR2
NONE
CN-RY2
NONE
CR4
NONE
D1
NONE
Q7
NONE
R273
NONE
R274
NONE
CN-RY1
NV2
D27
1A5-E
Q5 RTIN432C
Q11 2SA1036K(R)
R183
4.7k
R272
2.2k
R43, R113, JP1
NONE
C25, C92
NONE
CN-CPU, CN-21
NONE
R253~R256, R278
NONE
R279 (JUMPER)
R118~R120
NONE
COM 1 A67C5494
COM 2 A67C5495
COM 3 A67C5496
CU-L24DBE5
REMARK
CU-L28DBE5
IPM-TYPE
DC
AC
REMARK
A73C1598
2 PS21865-A
A581074
S25VB60
CODE No.
C209
REMARK
VALVE
VALVE
PRES,-SENSOR
←
←
A67C5217
A67C5218
←
NONE
499Ω 1%
20.0K 1%
20.0K 1%
100Ω 280V
←
←
←
←
←
←
←
←
←
←
←
←
←
←
←
←
←
←
←
A67C5507
A67C5508
A67C5509
CU-L34DBE5
CU-L430DB5
CT-TYPE
CAPACITOR
AC
RYLAY
DC
NO MOUNT
OTHER
A73C1600
PS21867-A
A581086
S50VB60
A743564
CU-L24DBE5
CU-L28DBE5
CU-L34DBE5
CU-L430DB5
A743566
CT25UU-P
←
←
←
XH3(VLW)
←
←
CU-L34DBE5
CU-L430DB5
CT-TYPE
NO MOUNT
ELECTRONIC CONTROL UNIT COMPLETE
TABLE 4
←
←
←
←
←
←
A743401
A743403
NONE
NONE
NONE
NONE
NONE
NONE
NONE
CU-L24DBE5
REMARK
CU-L28DBE5
FM-TYPE
ELECTRONIC CONTROL UNIT COMPLETE
TABLE 2
CODE No.
Q10
HEATSINK
DB
ELECTRONIC
CONTROL UNIT
(MAIN)
CODE No.
CT300
CT301
AC-IN
AC-OUT
CN-CT
2 SW4
R328~R331
NOTE
IPM-TYPE
POWER
132
A743568
A743478
400V
2 800µ 400V 800µ
CU-L34DBE5
CU-L43DBE5
POWER
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
15.3. Wired remote control
133
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
15.4. Print pattern
15.4.1. Indoor unit
• INDOOR UNIT
PRINTED CIRCUIT BOARD (MAIN)
134
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
15.4.2. Outdoor unit
• OUTDOOR UNIT
PRINTED CIRCUIT BOARD (MAIN)
135
CS-F14DD3E5 CU-L28DBE5 / CS-F18DD3E5 CU-L34DBE5 /
• OUTDOOR UNIT
PRINTED CIRCUIT BOARD (POWER)
• OUTDOOR UNIT
PRINTED CIRCUIT BOARD (SERVICE)
136
[PHAAM] Printed in Malaysia
SFYW0605 - 01
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