Mitsubishi MUX-10NV-E1, MUX-18NV-E1, MUX-24NV-E1 Service Manual
SPLIT-TYPE AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Models
MSX-05NV -
(WH)●
No. OB183
SECOND EDITION
MUX-10NV -
E1E1
MSX-09NV MSX-12NV -
(WH)●
(WH)●
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································6
4. OUTLINES AND DIMENSIONS·························9
5. WIRING DIAGRAM···········································11
6. REFRIGERANT SYSTEM DIAGRAM··············14
7. PERFORMANCE CURVES······························21
8. MICROPROCESSOR CONTROL ····················23
9. SERVICE FUNCTIONS ····································30
10. TROUBLESHOOTING ······································31
11. DISASSEMBLY INSTRUCTIONS·····················37
12. PARTS LIST······················································46
13. OPTIONAL PARTS ····································BACK
MUX-18NV MUX-24NV -
E1E1
E1E1
1
TECHNICAL CHANGES
MSX-10LV- ➔ MSX-10NVMSX-18LV- ➔ MSX-18NVMSX-24NV- New model
E1
E1E2
E1E2
Connectable unit table
INDOOR UNIT OUTDOOR UNIT
MSX-05NV x 2 MUX-10NVMSX-09NV x 2 or x 3 MUX-18NVMSX-09NV x 1 or x 2
MSX-12NV x 1 or x 2
MUX-24NV-
E1
E1
E1
It is not connected except above connection of indoor unit and outdoor unit.
1. Indoor unit model has changed.
2. Indoor fan motor has changed. (RC2V17-AA RC4V19-AA)
3. Compressor has changed. (KH-134VLC KH-134VLL)
4. Remote controller model has changed.
5. Microprocessor controller has changed.
6. The receiving system has changed.
INDOOR
220/240V
OUTDOOR INDOOR
220/240V.50Hz
220/240V
MSX-18NV
220/240V.50Hz
12VDC
12VDC
OUTDOOR
MSX-18NV
220/240V
220/240V.50Hz
50Hz
220/240V
7. Terminal block has changed.
LN2LN2 2121LN 2 1
8. Wiring diagram has changed.
9. Compressor protector has changed. (MSX-18NV- )
THERMAL SWITCH
OVERCURRENT RELAY OVERCURRENT RELAY (INNER THERMOSTAT)
E1
12VDC
220/240V
50Hz
MSX-18NV-
E1
2
2
PART NAMES AND FUNCTIONS
INDOOR UNIT
MSX-05NV- , MSX-09NV- , MSX-12NV-
(When the front panel is open)
E1E1E1
OUTDOOR UNIT
MUX-10NV- , MUX-18NV-
E1E1
MUX-24NV-
E1
Air inlet
(back and side)
Piping
Drainage hose
Air outlet
Drain outlet
3
.
MSX-05NVMSX-09NV-
E1
E1
REMOTE CONTROLLER
4
MSX-05NV- (Product number 7000501T~)
MSX-09NV- (Product number 7000701T~)
MSX-12NV-
E1
E1
E1
5
Model
Function
Power supply
Unit No.
Capacity
Dehumidification
Air flow
Power outlet
Running
current
Power input
Auxiliary heater
Power factor
Starting current
Compressor motor current
Fan motor
current
Model
Output
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Air direction
Sound level
(Hi)
Fan speed
(Hi)
Fan speed
regulator
Refrigerant filling capacity(R-22)
Thermistor
kW
R/h
K/h
K/h
A
A
A
W
W
A(kW)
%
%
A
A
A
A
W
"
"
"
mm
mm
mm
mm
mm
mm
kg
kg
dB
dB
rpm
rpm
kg
k"
k"
KH - 134VLL
650
C -R 4.66 C -S 8.20
RC4V 19 - A A
WHT - BLK 292 BLK - RED 324
RA6V22 - BC
WHT - BLK 325.0 BLK - RED 393.3
815
275
183
760
540
230
8
31
5
37
46 - 47
1,100
700
4
1
1.15
10
10
Capacity
Electrical
data
Coefficient of performance(C.O.P)
Compressor
Indoor
fan motor
Outdoor
fan motor
Dimensions
Weight
Special
remarks
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Indoor unit
Outdoor unit
Width
Height
Depth
Width
Height
Depth
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
RT11(at 25:)
RT12(at 25:)
MSX-10NV-
E1
OUTDOOR
Cooling
Single phase, 220-240V, 50Hz
MUX-10NV-
E1
INDOOR MSX-05NV-
E1
Single
A or B
2.2
0.8
492
1,560
0.17
3.33-3.43
35
705-755
–
94–86
96-92
3.05-3.15
0.17
2.97-2.78
Double
A + B
1.3x2
0.2x2
492x2
1,560
0.17x2
3.36-3.46
35x2
720-760
–
94–86
97-92
3.25-3.35
0.17x2
3.29-3.13
10
17
0.27
3
SPECIFICATION
NOTE:Test conditions
Cooling : Indoor DB27°C / WB19°C
6
Outdoor DB35°C / WB24°C
Model
Function
Power supply
Unit No.
Capacity
Dehumidification
Air flow
Power outlet
Running
current
Power input
Auxiliary heater
Power factor
Starting current
Compressor motor current
Fan motor
current
Model
Output
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Air direction
Sound level
(Hi)
Fan speed
(Hi)
Fan speed
regulator
Refrigerant filling capacity(R-22)
Thermistor
kW
R/h
K/h
K/h
A
A
A
W
W
A(kW)
%
%
A
A
A
A
W
"
"
"
mm
mm
mm
mm
mm
mm
kg
kg
dB
dB
rpm
rpm
kg
k"
k"
KH-134VLLx2
650x2
C-R 4.66, C-S 8.20
RC4V19-AA
WHT-BLK 292 BLK-RED 324
RA6V50-CB or RA6V50-CC
WHT-BLK117.3 BLK-YLW 65 YLW-RED 49.6
815
275
183
850
605
290
8
54
5
37
53
1,100
830-860
4
2
0.75+0.75
10
10
Capacity
Electrical
data
Coefficient of performance(C.O.P)
Compressor
Indoor
fan motor
Outdoor
fan motor
Dimensions
Weight
Special
remarks
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Indoor unit
Outdoor unit
Width
Height
Depth
Width
Height
Depth
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
RT11(at 25:)
RT12(at 25:)
MSX-18NV-
E1
OUTDOOR UNIT
Cooling
Single phase, 220-240V, 50Hz
MUX-18NV-
E1
INDOOR UNIT MSX-09NV-
E1
Double
A + B or A + C
2.1x2
0.8x2
492x2
1,980
0.17x2
7.06-7.16
35x2
1500-1580
–
94-86
97-92
17x2
6.67-6.77
0.17x2
0.37
2.68-2.55
Single
A or B or C
2.3
0.9
492
1,320
0.17
3.63-3.73
35
755-795
–
94-86
95-89
17
3.3-3.4
0.17
0.32
2.91-2.77
Double
B + C
1.3x2
0.2x2
492x2
1,320
0.17x2
3.66-3.76
35x2
760-810
–
94-86
94-90
17
3.32-3.42
0.17x2
0.32
3.13-2.95
Triple
A + B + C
2.1+1.3x2
0.8+0.2x2
492x3
1,980
0.17x3
7.09-7.19
35x3
1495-1585
–
94-86
96-92
17x2
6.69-6.79
0.17x3
0.37
2.94-2.78
15
NOTE:Test conditions
Cooling : Indoor DB27°C / WB19°C
Outdoor DB35°C / WB24°C
7
Model
Function
Power supply
Unit No.
Capacity
Capacity
Dehumidification
Air flow
Indoor
Outdoor
Power outlet
Electrical
data
Running
current
Power input
Auxiliary heater
Power factor
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Starting current
Compressor motor current
Fan motor
current
Indoor unit
Outdoor unit
Coefficient of performance(C.O.P)
Model
Compressor
Output
Winding resistance (at 20:)
Indoor
fan motor
Outdoor
fan motor
Model
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Width
Indoor unit
Dimensions
Outdoor unit
Height
Depth
Width
Height
Depth
Weight
Indoor unit
Outdoor unit
Air direction
Special
remarks
Sound level
(Hi)
Fan speed
(Hi)
Fan speed
regulator
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Refrigerant filling capacity(R-22)
Thermistor
RT11(at 25:)
RT12(at 25:)
NOTE:Test conditions
Cooling : Indoor DB27°C / WB19°C
Outdoor DB35°C / WB24°C
MSX-24NV- E1INDOOR UNIT OUTDOOR UNIT
MSX-09NVMSX-12NV-
E1
E1
Cooling
Single phase, 220-240V, 50Hz
Double
A+C or A+D
B+C or B+D
3.1+2.3
1.4+0.8
558+492
2400-2640
25
0.17x2
10.8-10.4
35x2
2.33-2.40
–
94–86
97-96
48
10.6-10.2
0.17x2
0.28-0.31
2.25-2.19
A+B+C or
1.95x2+2.2
0.5x2+0.8
558x2+492
kW
R/h
K/h
K/h
A
A
A
W
kW
A(kW)
%
%
A
A
A
A
Single
A or B
3.4
1.6
558
0.17
6.2-6.0
35
1.32-1.38
–
94–86
97-96
6.2-6.0
0.17
2.51-2.40
Single
C or D
2.6
1.2
492
0.17
4.4-4.3
35
0.94-0.98
–
94–86
97-96
4.4-4.2
0.17
2.67-2.56
Double
A+B
2.0x2
0.5x2
558x2
0.17x2
6.5-6.5
35x2
1.39-1.49
–
94–86
97-96
6.2-6.0
0.17x2
2.74-2.56
Double
C+D
1.7x2
0.3x2
492x2
0.17x2
4.6-4.4
35x2
0.98-1.02
–
94–86
97-96
4.4-4.2
0.17x2
3.24-3.12
RH-174VGH+RH-231VHA
W
"
RH-174VGH C-R3.30 C-S5.80 RH-231VHA C-R2.13 C-S3.91
RH-174VGH 800 RH-231VHA 1100
RC4V19-AA
"
WHT-BLK 292 BLK-RED 324
RA6V25-AA
"
mm
mm
mm
mm
mm
mm
kg
kg
WHT-BLK142 BLK-RED135
815
275
183
750
900
330
8
72
5
dB
dB
rpm
rpm
MSX-09NV 37 MSX-12NV 42
49
MSX-09NV 1100 MSX-12NV 1230
530-570
4
1
kg
k"
k"
1.15+1.15
10
10
Triple
A+B+D
0.17x3
11.1-10.6
35x3
2.37-2.45
–
94–86
97-96
10.6-10.2
0.17x3
2.46-2.39
MUX-24NV-
Triple
A+C+D or
B+C+D
2.9+1.55x2
1.3+0.3x2
558+492x2
0.17x3
11.1-10.6
35x3
2.37-2.45
–
94–86
97-96
10.6-10.2
0.17x3
2.42-2.35
E1
Four
A+B+C+D
1.95x2+1.55x2
0.5x2+0.3x2
558x2+492x2
0.17x4
11.5-10.9
35x4
2.45-2.50
–
94–86
97-96
10.6-10.2
0.17x4
2.70-2.65
8
230
260
295
Bolt pitch
4 holes 10 21
Bolt pitch for installation
500
250
10
262.5
540
760
112
Wiring hole
Rear side
20
63
384.5
67 57
57
57
57
68
68
Stop valve 1/4F
Stop valve 3/8F
151
Service panel
58
60
21
35
50
70
50
50
56
105
Air in
Air in
Air out
Drainage
4 hole
[16.2
108
ø415
35cm or more
50cm or more
10cm or more
10cm or more
Unless any obstacle
exists in front ,right
Unless any obstacle
exists in front
and left sides.
10cm or more
Unless any obstacle
exists in right , left and
rear sides.
REQUIRED SPACE
Unit A
4
OUTLINES AND DIMENSIONS
INDOOR UNIT
MSX-05NV- , MSX-09NVMSX-12NV-
E1
Unit : mm
E1E1
OUTDOOR UNIT
MUX10NV-
E1
9
16 310 16
290
530
605
292
20
500
Bolt pitch for installation
50
90 57 57 57
Service port
Stop valve
3/8F
A
154.6
Service portBC
Gas side
union
3/8F
Liquid side
union
1/4F
Stop valve 1/4F
30
52
186
70 66
Electrical wiring entrance (Rear) 15 25
Unless any
obstacle exists
in right ,left ,
and rear sides.
C
B
Unless any
obstacle exists
in front, right
and left sides.
REQUIRED SPACE
4 holes-10 21
34
35
5480
236
91
51
168
57
850
133
Air out
Air in
4 Drain holes [
16.2
Air in
10cm or more
50cm or more
35cm or more
10cm or more
10cm or more
A
OUTDOOR UNIT
MUX-18NV-
E1
MUX-24NV-
Handle for moving
10
E1
Air in
34330
750
27
200 200500
Air in
Air out
900
328
2-Oval hols(12Å~36)
(Base bolt M10)
2-U-Shape noched hols
(Base bolt M10)
29
412
372
53
Handle for moving
72.2
58.2
5050505050
50
50
64.8
264.2
Wiring hole
Liquid pipe
(flared ɔ6.35)
Gus pipe
(flared ɔ12.7)
Gus pipe
(flared ɔ9.52)
WHT
WHT
BRN
F13
F12
CIRCUIT BREAKER
WHT
1
TB2
2
TB2
TB3
1
BLU
BLU
BLK
RED
C2
221
1
43
X1
4X23
BLU
BLU
BLU
BLU
RED
YLW
RED
YLW
BLU
BRN
BLU
BLU
BLU
BRN
WHT
BRN
WHT WHTBRN
NO COM
52C1
NO
52C2
COM
3
1
RED
BLU
RED
BLK
21R2
21R1
21R
52C1
TB
52C2
MF
WHT
2
WHT
1
51C
R
S
MC
C
X2
N
L
POWER SUPPLY
220-240V
50Hz
GRN/YLW
BLK
12VDC
12VDC
WHT
ORN
GRY
TO INDOOR
UNIT No.A
CONNECTING
X1
1
2
1
2
TO INDOOR
UNIT No.B
CONNECTING
2
TB3
C1
CIRCUIT BREAKER
POWER
SUPPLY
CORD
50Hz
F12
12VDC
12VDC
TO OUTDOOR
UNIT
CONNECTING
TB
2
1
1
1
2
L
N
2
CN202
1
BLU
BLU
BLU
BLK
WHT
BRN
BRN
BLU
BLU
GRN/YLW
GRN/YLW
220-240V
~/N
GUARD
PLATE
TRANS
HIC1
MV
POWER MONITOR,
RECEIVER
P.C.BOARD
REMOTE
CONTROLLER
F11
NR11
ELECTRONIC CONTROL P.C BOARD
1
122
CN
TAB12
5
LD101
151
CN
CN201
MF
RT11
RT12
SR11
C11
5
4
3
2
6
1
3
2
1
3
CN211
111
CN
CN
112
121
CN
RED
WHT
BRN
YLW
GRY
BLK
5
WIRING DIAGRAM
INDOOR UNIT
MODELS MSX-05NV- , MSX-09NV- , MSX-12NV-
❈
❈
SYMBOL
C11
F11
MF
MV
NAME
INDOOR FAN CAPACITOR
FUSE(3.15A)
FAN MOTOR
VANE MOTOR
SYMBOL
NR11
RT11
RT12
SR11
NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL TEMPERATURE THERMISTOR
SOLID STATE RELAY
NOTE:1. About the outdoor side electric wiring refer to the outdoor electric wiring diagram for servicing.
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
SYMBOL
HIC1
TB
F12
E1E1E1
NAME
DC/DC CONVERTER
TERMINAL BLOCK
FUSE (93;)
OUTDOOR UNIT
MODEL MUX-10NV-
E1
❈
❈
❈
❈
❈
❈
❈
❈
❈
❈
❈
❈
SYMBOL
TB,TB2,TB3
TERMINAL BLOCK
RELAY(A)
X1
RELAY(B)
X2
21R
21R1
21R2
BYPASS VALVE SOLENOID COIL
SOLENOID COIL(A)
SOLENOID COIL(B)
.
NAME
SYMBOL
C1
COMPRESSOR CAPACITOR
C2
OUTDOOR FAN CAPACITOR
F12
F13
MC
MF
NOTE:1. Use copper conductors only.(For field wiring)
FUSE(2A)
FUSE(2A)
COMPRESSOR(B,C)
FAN MOTOR
2. Symbols below indicate.
: Terminal block, : Connector
3. ❈ on the wiring diagram shows the terminals with a lock mechanism, so it cannot be removed when you pull the lead wire Be sure to pull the wire by pushing
the locking lever (projected part) of the terminal with a finger
NAME
SYMBOL
NAME
OVER CURRENT RELAY(INNER THERMOSTAT)
51C1
52C1
COMPRESSOR CONTACTOR(A)
52C2
COMPRESSOR CONTACTOR(B)
① Slide the sleeve.
➁ Pull the wire while pushing the locking
lever.
11
TO INDOOR
UNIT No.A
CONNECTING
TO INDOOR
UNIT No.B
CONNECTING
TO INDOOR
UNIT No.C
CONNECTING
POWER SUPPLY
220-240V
50Hz
BRN
WHT
F14
BLU
GRY
F13
CIRCUIT BREAKER
YLW
RED
BRN
BLU
BLU
BLU
WHT
F12
BLU
BLU
BLU
GRY
1
TB3
TB2
1
43
43
12VDC
12VDC
12VDC
BLU
BLU
BLU
YLW
GRN/YLW
BLK
WHT
ORN
RED
YLW
51C2
BRN
YLW
BRN
BLU
WHT
WHT
WHT
RED
REDBLU
WHT
BRN
2
TB2
X2
X1
1
2
1
2
C2
C1
R
C
C
S
MC2
BLK
52CA
BLU
52C2
21R2
RED 2
X2
X1
COMNO
52CA
3
X12
5
1
MC1
51C1
1
1
52C1
X11
X11
21R
X11
X12
21R1
X12
C3
TB
52C1
52C2
1
2
L
N
4
78
4
6
2
6
2
2
87
3
1
5
3
2
4
43
BRN
BLU
BRN
BRN
WHT
GRY
WHT
BLU
BLU
R
MF
BLK
ORN
WHT
YLW
RED
BLK
5
4
2
3
1
RED
YLW
BLK
WHT
ORN
RED
GRY
S
1
1
OUTDOOR UNIT
MODEL MUX-18NV-
❈
E1
SYMBOL
C1
C2
C3
MC1
MC2
MF
F12
F13
❈
❈
❈
❈
❈
❈
❈
NAME
COMPRESSOR CAPACITOR(A)
COMPRESSOR CAPACITOR(B,C)
OUTDOOR FAN CAPACITOR
COMPRESSOR(A)
COMPRESSOR(B,C)
FAN MOTOR(INNER THERMOSTAT)
FUSE(2A)
FUSE(2A)
❈1
❈2
❈1
❈2
❈1
❈2
SYMBOL
TB
X11
X12
21R
21R1
21R2
F14
TB2,TB3
❈
❈
❈
❈
❈
❈
NAME
TERMINAL BLOCK
FAN MOTOR RELAY(A)
FAN MOTOR RELAY(B,C)
SOLENOID COIL
SOLENOID COIL(B)
SOLENOID COIL(C)
FUSE(2A)
TERMINAL BLOCK
SYMBOL
51C1
51C2
52CA
52C1
52C2
X1
X2
NAME
OVER CURRENT RELAY(A)INNER THERMOSTAT
OVER CURRENT RELAY(B,C)INNER THERMOSTAT
COMPRESSOR CONTACTOR(A)
COMPRESSOR CONTACTOR(B)
COMPRESSOR CONTACTOR(C)
RELAY(B)
RELAY(C)
NOTE:1. Use copper conductors only.(For field wiring)
2. Symbols below indicate.
: Terminal block, : Connector
3. ❈ on the wiring diagram shows the terminals with a lock mechanism, so it cannot be removed when you pull the lead wire Be sure to pull the wire by
.
① Slide the sleeve.
➁ Pull the wire while pushing the locking
lever.
pushing the locking lever (projected part) of the terminal with a finger
12
OUTDOOR UNIT
POWER SUPPLY
~/N
220-240V
50Hz
CIRCUIT
BREAKER
TO INDOOR
UNIT No.A
CONNECTING
TO INDOOR
UNIT No.B
CONNECTING
TO INDOOR
UNIT No.C
CONNECTING
TO INDOOR
UNIT No.D
CONNECTING
MODEL MUX-24NV-
4
❈
❈
❈
❈
BRN
BLU
BLU
BLU
BLU
4
BRN
BLU
21R1
21R2
21R3
21R4
52C1
52C2
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
3
3
BRN
ORN
ORN
ORN
ORN
4
TB
L
N
GRN/YLW
2
TB1
1
12VDC
2
TB2
1
12VDC
2
TB3
1
12VDC
2
TB4
1
12VDC
YLW
❈
❈
YLW
ORN
❈
❈
ORN
WHT
❈
❈
WHT
GRY
❈
❈
GRY
X1
X2
X3
X4
❈2
❈2
❈2
❈1
❈2
BRN
❈
❈1
❈1
❈1
❈
F
BRN
❈
BRN
BRN
BRN
BRN
❈
❈
❈
BRN
X1
4
X2
4
X3
4
X4
4
3
3
3
3
E1
5
GRY
ORN
WHT
YLW
1
RED
2
3
1
RED
2
3
BRN
1
WHT
1
2
3
4
5
6
C
WHT
MC1
S
R
BLK
C
WHT
MC2
S
R
BLK
1
❈
3
X11
5
❈
RED
ORN
WHT
MF
BLK
WHT
WHT
3
52C4
WHT
2
BLU
BLU
2
2
2
BLU
BLU
TB6
BLU
BLU
2
1
WHT
BLU
BLU
BLU
BLU
❈
7
X12
BLU
21RB
7
2
BLU
321
BLU
21RA
21
X11
TB5
BLU
8
BLU
BLU
BLU
ORN
8
WHT
52C3
3
4
BLU
1
2
52C1
1
BLU
1
2
52C2
1
BLU
1
2
3
52C3
1
BLU
1
2
3
52C4
1
TB7
BLU
12
WHT
RED
C1
BLK
BLU
WHT
RED
C2
❈
BLK
3
X12
C11
SYMBOL
C1
C2
C11
MC1
MC2
MF
F
21RA
21RB
MODEL MUX-24NV-
TB
L
POWER SUPPLY
~/N
220-240V
50Hz
CIRCUIT
BREAKER
TO INDOOR
UNIT No.A
CONNECTING
TO INDOOR
UNIT No.B
CONNECTING
TO INDOOR
UNIT No.C
CONNECTING
TO INDOOR
UNIT No.D
CONNECTING
NAME
COMPRESSOR CAPACITOR(A,B)
COMPRESSOR CAPACITOR(C,D)
FAN MOTOR CAPACITOR
COMPRESSOR(A,B)
COMPRESSOR(C,D)
FAN MOTOR(INNER THERMOSTAT)
FUSE(3.15A)
SOLENOID COIL
SOLENOID COIL
N
GRN/YLW
2
TB1
1
12VDC
2
TB2
1
12VDC
2
TB3
1
12VDC
GRY
2
TB4
1
12VDC
YLW
❈
❈
YLW
ORN
❈
❈
ORN
WHT
❈
❈
WHT
❈
❈
GRY
BRN
❈2
X1
❈1
❈2
X2
❈1
❈2
X3
❈1
❈2
X4
❈1
BRN
2
BRN
TB10
BRN
BRN
1
BRN
❈
F
❈
X1
❈
BRN
4
3
BRN
X2
❈
4
3
BRN
X3
❈
4
3
BRN
X4
❈
4
3
BRN
SYMBOL
TB
X11
X12
21R1
21R2
21R3
21R4
TB1~TB10
E1
4
3
52C1
4
52C2
BRN
BLU
BLU
21R1
BLU
BLU
❈
BLU
21R2
BLU
BLU
❈
BLU
21R3
BLU
BLU
❈
BLU
21R4
BLU
BLU ORN
❈
WHT
3
WHT
4
3
52C4
4
3
52C3
BLU
1
2
ORN
52C1
1
2
BLU
1
2
ORN
52C2
2
1
BLU
1
2
3
ORN
52C3
1
BLU
1
2
3
52C4
1
TERMINAL BLOCK
FAN MOTOR RELAY(A,B)
FAN MOTOR RELAY(B,C)
SOLENOID COIL(A)
SOLENOID COIL(B)
SOLENOID COIL(C)
SOLENOID COIL(D)
TERMINAL BLOCK
(Product number 700501~)
1
WHT
TB9
2
WHT
BLU
BLU
BLU
BLU
BLU
7
X12
BLU
21RB
21RA
21
X11
7
TB5
BLU
BLU
8
BLU
321
BLU
WHT
BLU
BLU
ORN
8
❈
2
2
1
1
TB7
WHT
BLU
BLU
2
BLU
2
NAME
BLU
TB8
BLU
BLU
WHT
BLU
TB6
BLU
12
2
1
WHT
RED
C1
BLK
BLU
WHT
RED
C2
BLK
3
X12
5
GRY
C11
ORN
WHT
YLW
SYMBOL
52C1
52C2
52C3
52C4
X1
X2
X3
X4
C
MC1
S
R
C
MC2
S
R
BRN
❈
3
1
1
X11
WHT
5
❈
RED
1
ORN
2
WHT
MF
3
BLK
4
5
6
COMPRESSOR RELAY(A)
COMPRESSOR RELAY(B)
COMPRESSOR RELAY(C)
COMPRESSOR RELAY(D)
RELAY(A)
RELAY(B)
RELAY(C)
RELAY(D)
NAME
NOTE:1. Use copper conductors only.(For field wiring)
2. Symbols below indicate.
: Terminal block, : Connector
3. ❈ on the wiring diagram shows the terminals with a lock mechanism, so it cannot be removed when you pull the lead wire Be sure to pull the wire by
pushing the locking lever (projected part) of the terminal with a finger
.
① Slide the sleeve.
➁ Pull the wire while pushing the locking
lever.
13
OUTDOOR UNITINDOOR UNIT
UNIT A
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
UNIT B
Indoor
heat
exchanger
Outdoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
(option)
(With insulation)
Refrigerant pipe
9.52 (3/8)
(option)
(With insulation)
Refrigerant pipe
9.52 (3/8)
Flared connection
(option)
(With insulation)
Refrigerant pipe
6.35 (1/4)
(option)
(With insulation)
Refrigerant pipe
6.35 (1/4)
Flared connection
Stop valve
with service port
Solenoid valve
21R1
Solenoid valve
21R
Solenoid valve
21R2
Capillary tube
1.4 x 400
Capillary tube
1.4 x 400
Capillary tube
Capillary tube
1.4 x 200
1.6 x 1,000
Compressor
Refrigerant flow
Stop valve
with service port
Stop
valve
Stop
valve
6
REFRIGERANT SYSTEM DIAGRAM
MSX-05NV-
E1
MUX-10NV-
E1
Unit : mm
MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE
Indoor unit A
MSX-05NV
Outdoor unit
MUX-10NV
ADDITIONAL REFRIGERANT CHARGE (R-22:g)
MSX-10NV
A
E1
- precharged 7m 8m 9m 10m 11m 12m 13m 14m 15m
B
unit+ unit 1150g 0 10 20 30 40 50 60 70 80
Outdoor unit refrigerant piping length (one way,2unit total)
PIPING PREPARATION
1 Table below shows the specifications of pipes commercially available.
UNIT No. Pipe
and
BA
UNIT
For liquid 6.35 1/4 6 mm Heat resisting foam plastic
For gas 9.52 3/8 6 mm 0.045 specific gravity
E1
2 Ensure that the 2 refrigerant pipes are well insulated to prevent condensation.
3 Refrigerant bending radius must be 10cm or more.
14
E1
Additional piping max. length 10m
Outside diameter Insulation
mm inch thickness
Indoor unit B
MSX-05NV
E1
Max. length
difference
5m
Insulation material
Unit : mm
MSX-09NV-
INDOOR UNIT
UNIT A
MSX-09NV
MSX-09NV
E1
UNIT B
E1
E1
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
Room
temperature
thermistor
RT11
Room
temperature
thermistor
RT11
Refrigerant pipe
9.52<3/8>
(option)
(With insulation)
Flared connection
Refrigerant pipe
6.35<1/4>
(option)
(With insulation)
Refrigerant pipe
9.52<3/8>
(option)
(With insulation)
Flared connection
Refrigerant pipe
6.35<1/4>
(option)
(With insulation)
Refrigerant pipe
9.52<3/8>
Stop valve
with service port
Stop valve
Capillary tube
Stop valve
with
service port
Solenoid valve
21R1
Capillary tube
1.4 ✕ 600
1.4 ✕ 1000
Compressor(A)
Solenoid valve
21R
Capillary tube
1.4 ✕ 150
Capillary tube
1.6 ✕ 1,000
Compressor(B,C)
Stop valve
with
service port
MUX-18NV-
OUTDOOR UNIT
Outdoor
heat
exchanger
E1
UNIT C
MSX-09NV
E1
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Flared connection
Refrigerant pipe
6.35<1/4>
(option)
(With insulation)
Refrigerant flow
Solenoid valve
21R1
Capillary tube
1.4 ✕ 600
15
LA
Indoor unit A
MSX-09NV - E1
HL
B HLC
H
Indoor unit B
MSX-09NV - E1
Indoor unit C
MSX-09NV - E1
Outdoor unit
MUX-18NV - E1
MSX-09NV-
E1
MAX.REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE
Max.
limits
UNIT No.
A
B
C
LA
LB
LC
Pipe length
10m
10m
10m
L
B
+
LC
Total
15m
Height difference (H)
5m
5m
5m
Note: The length of piping to individual units (A,B,C) should not exceed 10 meters.
If units B and C are linked, the maximum combined length of piping should not exceed 15 meters.
ADDITIONAL REFRIGERANT CHARGE (R-22:g)
Refrigerament piping length (one way)
Refrigerament piping length (one way,2 unit total)
9m
30
10m4511m
60
12m7513m9014m
A
unit
CB
unit + unit
Outdoor unit
precharged
750g
Outdoor unit
precharged
750g
7m 8m 9m 10m
0153045
7m
0
8m
15
PIPING PREPARATION
1Table below shows the specifications of pipes commercially available.
UNIT No.
BA
, and
C
unit
Pipe
For liquid
For gas
Outside diameter
mm inch
6.35 1/4
9.52 3/8
Insulation
thickness
6mm
6mm
Insulation material
Heat resisting foam plastic
0.045 specific gravity
No. of bends
10
10
10
105
Total
15
15m
120
2Ensure that the 2 refrigerant pipes are well insulated to prevent condensation.
3Refrigerant bending radius must be 10cm or more.
16
MSX-09NV-
OUTDOOR UNITINDOOR UNIT
UNIT A
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
UNIT B
Indoor
heat
exchanger
Outdoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
(option)
(With insulation)
Refrigerant pipe
{12.7 (1/2)
(option)
(With insulation)
Refrigerant pipe
{12.7 (1/2)
Flared connection
(option)
(With insulation)
Refrigerant pipe
{6.35 (1/4)
(option)
(With insulation)
Refrigerant pipe
{6.35 (1/4)
Flared connection
Stop valve
with service port
Solenoid valve
21R1
Solenoid valve
21RA
Solenoid valve
21R2
Capillary tube
{1.6 x 400
Capillary tube
{1.6 x 400
Capillary tube
Capillary tube
{1.8 x 260
{1.6 x 1,000
Compressor
Refrigerant flow
Stop valve
with service port
Stop
valve
Stop
valve
UNIT C
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
UNIT D
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
(option)
(With insulation)
Refrigerant pipe
{9.52 (3/8)
(option)
(With insulation)
Refrigerant pipe
{9.52 (3/8)
Flared connection
(option)
(With insulation)
Refrigerant pipe
{6.35 (1/4)
(option)
(With insulation)
Refrigerant pipe
{6.35 (1/4)
Flared connection
Stop valve
with service port
Solenoid valve
21R3
Solenoid valve
21RB
Solenoid valve
21R4
Capillary tube
{1.6 x 650
Capillary tube
{1.6 x 650
Capillary tube
Capillary tube
{1.6 x 400
{1.6 x 1,000
Compressor
Stop valve
with service port
Stop
valve
Stop
valve
MSX-12NV- E1
MSX-12NV- E1
MSX-09NV- E1
MSX-09NV- E1
MSX-12NV-
E1
E1
MUX-24NV-
E1
Unit : mm
17
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