Panasonic CS-BE20TKD / CU-BE20TKD Service Manual ▷ View online
17
9.2 Outdoor
Unit
Sensor (Thermistor)
Characteristics
70
60
50
40
30
20
10
0
-10
0
10
Temperature (
o
C)
Resistance (k
Ω
)
20
30
40
50
1
2
1
2
Outdoor Air Sensor
Outdoor Heat Exchanger
Sensor
Outdoor Heat Exchanger
Sensor
Compressor Temp. Sensor
(Thermistor) Characteristics
70
60
50
40
30
20
10
0
20
40
60
Temperature (
o
C)
Resistance (k
Ω)
80
100
120
140
TERMINAL
BOARD
TO INDOOR UNIT
COMPRESSOR
AC-WHT
(WHT)
CN-MTR1
CN-MTR2
(WHT)
IC19
FG1
(GRN)
FG2
(GRN)
GRN
BLK
WHT
GRN
AC-BLK
(BLK)
DATA
(RED)
RED
GRY
RAT2
(GRY)
GRY
RAT1
(GRY)
REACTOR
RED
BLU
YLW
U (RED)
FUSE103
T3.15A L250V
V (BLU)
W (YLW)
U
V
W
3
5
1
10
14
16
P
N
SWITCHING
POWER
SUPPLY CIRCUIT
FUSE102
T3.15A L250V
FUSE101
(20A 250V)
3
2
1
COMMUNICATION
CIRCUIT
PFC
CIRCUIT
W
U
V
ELECTRONIC
CONTROLLER
MS
3 ~
3 ~
FUSE104
(15A 250V)
NOISE
FILTER
CIRCUIT
RECTIFICATION
CIRCUIT
RECTIFICATION
CIRCUIT
1
3
3
CN-T
ANK WHITE
5V
G8
R1
4.99k
1%
G8
B1
C3
1μ
C3
1μ
10V
Q1
CN-TH WHITE
5V
1
2
3
4
2
3
4
G8
G8
G8
R12
15.0k
1%
R11
15.8k
1%
C7
1μ
B1
B1
10V
C6
1μ
KB
10V
FAN MOTOR
3
2
1
C173
5V
R120
1k
B1
C175
0.01μ
50V
G5
G5
+
1
3
D9
1A5
AK
G2
CN-HOT
MS
3 ~
YLW
YLW
ELECTRO-MAGNETIC
COIL (4-WAYS VALVE)
COIL (4-WAYS VALVE)
ELECTRO-MAGNETIC
COIL (EXPANSION VALVE)
COIL (EXPANSION VALVE)
1
6
CN-STM
(WHT)
M
COMP. TEMPERATURE
SENSOR (THERMISTOR)
(50KΩ, 3950)
SENSOR (THERMISTOR)
(50KΩ, 3950)
t°
OUTDOOR AIR TEMP.
SENSOR
(THERMISTOR) (15KΩ, 3950)
SENSOR
(THERMISTOR) (15KΩ, 3950)
PIPING TEMP. SENSOR
(THERMISTOR)
(4.96KΩ, 3800)
(THERMISTOR)
(4.96KΩ, 3800)
t°
t°
D61
D62
D63
D64
AK
AK
AK
AK
G2
G2
13V
C189
0.1μ
B1
25V
15V
R127
10k
Q14
2SB1188Q
-32V
-2A
E
B
C
16
15
14
13
12
11
10
15
14
13
12
11
10
1
2
3
4
5
6
7
2
3
4
5
6
7
16
15
14
13
12
11
10
15
14
13
12
11
10
1
2
3
4
5
6
7
2
3
4
5
6
7
G2
G2
IC6
IC7
18
10. Printed Circuit Board
10.1 Indoor Unit
10.1.1 Main Printed Circuit Board
10.1.2 Indicator
&
Receiver Printed Circuit Board
CN-STM1
CN-FM
CN-TH
CN-CNT
CN-DISP
CN-RMT
RY-PWR
AC303 G301
AC304
JP1 (Random Auto Restart enable/disable)
CN-DISP
19
10.2 Outdoor Unit
10.2.1 Main Printed Circuit Board
CN-HOT
CN-STM
CN-TH
CN-MTR1
CN-MTR2
CN-TANK
AC-BLK
DATA
AC-WHT
POWER
TRANSISTOR
(IPM)
TRANSISTOR
(IPM)
CURRENT
TRANSFORMER
(CT)
20
11. Installation
Instruction
11.1 Select the Best Location
11.1.1 Indoor
Unit
Do not install the unit in excessive oil fume area
such as kitchen, workshop and etc.
There should not be any heat source or steam
near the unit.
There should not be any obstacles blocking the air
circulation.
A place where air circulation in the room is good.
A place where drainage can be easily done.
A place where noise prevention is taken into
consideration.
Do not install the unit near the door way.
Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles.
Recommended installation height for indoor unit
shall be at least 2.5 m.
11.1.2 Outdoor
Unit
If an awning is built over the unit to prevent direct
sunlight or rain, be careful that heat radiation from
the condenser is not obstructed.
the condenser is not obstructed.
There should not be any animal or plant which
could be affected by hot air discharged.
Keep the spaces indicated by arrows from wall,
ceiling, fence or other obstacles.
Do not place any obstacles which may cause a
short circuit of the discharged air.
If piping length is over the [piping length for
additional gas], additional refrigerant should be
added as shown in the table.
added as shown in the table.
Example: For BE20***
If the unit is installed at 10 m distance, the quantity of
additional refrigerant should be 50 g .... (10-7.5) m x
20 g/m = 50 g.
If the unit is installed at 10 m distance, the quantity of
additional refrigerant should be 50 g .... (10-7.5) m x
20 g/m = 50 g.
11.1.3 Indoor/Outdoor Unit Installation
Diagram
This illustration is for explanation purposes only.
The indoor unit will actually face a different way.
Model
Horse
Power
(HP)
Piping size
Std.
Length
(m)
Max.
Elevation
(m)
Min.
Piping
Length
(m)
Max.
Piping
Length
(m)
Additional
Refrigerant
(g/m)
Piping
Length
for add.
gas
(m)
Gas
Liquid
BE20***
3/4HP
9.52mm
(3/8")
6.35mm
(1/4")
5
15
3
15
15
7.5
KE25***,
BE25***,
DE25***
BE25***,
DE25***
5
.
7
5
1
5
1
3
5
1
P
H
0
.
1
KE35***,
BE35***,
DE35***
BE35***,
DE35***
5
.
7
0
2
5
1
3
5
1
P
H
5
.
1
KE50***,
BE50***,
DE50***
BE50***,
DE50***
2.0HP
12.7mm
(1/2")
15
3
15
20
7.5
50 mm
or more
65 mm
or more
(Left and right are identical)
Vinyl tape
6
Remote control holder
5
Remote
Remote control holder fixing screws
control
3
100 mm
or more
1000 mm
or more
100 mm
or more
300 mm
or more
It is advisable to
avoid more than 2
blockage directions.
For better ventilation
& multiple-outdoor
installation, please
consult authorized
dealer/specialist.
avoid more than 2
blockage directions.
For better ventilation
& multiple-outdoor
installation, please
consult authorized
dealer/specialist.
Installation plate
1
Sleeve ( )
Bushing-Sleeve ( )
Bend the pipe as
closely on the wall as
possible, but be careful
that it doesn’t break.
closely on the wall as
possible, but be careful
that it doesn’t break.
Saddle ( )
Power supply cord ( )
Additional drain hose ( )
Gas side piping ( )
Connection cable ( )
Putty ( )
(Gum Type Sealer)
(Gum Type Sealer)
Installation parts you
should purchase ( )
should purchase ( )
Vinyl tape (wide) ( )
• Apply after carrying
out a drainage test.
• To carry out the
drainage test,
and pour water into
the heat exchanger.
the heat exchanger.
remove the air filters
Liquid side piping ( )
• Carry out insulation after
checking for gas leaks and
secure with vinyl tape.
secure with vinyl tape.
Attaching the remote control holder to the wall
Insulation of piping connections
Piping direction
Attention not to bend
up drain hose
up drain hose
Right
Right
Rear
Rear
Right
bottom
bottom
Left
Rear
Rear
Left bottom
Left
(Front side)
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