Mitsubishi MUX-2A28VB User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················6
3. INDOOR / OUTDOOR
CORRESPONDENCE TABLE ···························6
4. SPECIFICATION·················································7
5. NOISE CRITERIA CURVES·····························12
6. OUTLINES AND DIMENSIONS ······················ 13
7. WIRING DIAGRAM ··········································16
8. REFRIGERANT SYSTEM DIAGRAM··············21
9. PERFORMANCE CURVES······························32
10. ACTUATOR CONTROL····································55
11. TROUBLESHOOTING······································56
12. DISASSEMBLY INSTRUCTIONS·····················63
13. PARTS LIST······················································68
Multi system type
Models
MUX-2A28VB -
MUX-2A59VB -
MUX-3A60VB -
MUX-3A63VB -
MUX-2A70VB -
MUX-4A73VB - E1
E1
E1
E1
E1
E1
MUX-2A59VB -
MUX-3A60VB -
MUX-3A63VB -
MUX-2A70VB - E1
E1
E1
E1
HFC
utilized
R410A
SPLIT-TYPE, AIR CONDITIONER
Indication of
model name
NOTE:
•As for indoor unit MSC-CA20VB - , MSC-CA25VB -
or MSC-CA35VB - , refer to the service manual OB393.
•This manual describes technical data of outdoor unit.
•As for indoor unit MSC-GA20VB - , MSC-GA25VB -
or MSC-GA35VB - , refer to the service manual OB385.
E1
E1E1
E1
E1E1
No. OB384
OB384--1.qxp 05.1.17 13:08 Page 1

TECHNICAL CHANGES
2
1
MUX-A10WV- ➔MUX-2A28VB-
MUX-A20WV- ➔MUX-3A60VB-
1. Indication of capacity has been changed. (BTU➔kW)
MUX-A19WV- ➔MUX-2A59VB-
MUX-A22WV- ➔MUX-3A63VB-
MUX-A25WV- ➔MUX-2A70VB-
MUX-A26WV- ➔MUX-4A73VB-
1. Indication of capacity has been changed. (BTU➔kW)
2. Size of stop valve (Gas) has been changed. ([12.7➔[9.52)
E1E1
E1E1
E1E1
E1E1
E1E1
E1E1
OB384--1.qxp 05.1.17 13:08 Page 2

3
Refrigeration
oil
Refrigerant
New refrigerant
R410A
HFC-32: HFC-125 (50%:50%)
Pseudo-azeotropic refrigerant
Not included
A1/A1
72.6
-51.4
1.557
64
Non combustible
0
1730
From liquid phase in cylinder
Possible
Incompatible oil
Non
Non
Previous refrigerant
R22
R22 (100%)
Single refrigerant
Included
A1
86.5
-40.8
0.94
44.4
Non combustible
0.055
1700
Gas phase
Possible
Compatible oil
Light yellow
Non
Refrigerant
Composition (Ratio)
Refrigerant handling
Chlorine
Safety group (ASHRAE)
Molecular weight
Boiling point (:)
Steam pressure [25:](Mpa)
Saturated steam density [25:](Kg/K)
Combustibility
ODP w1
GWP w2
Refrigerant charge method
Additional charge on leakage
Kind
Color
Smell
w1:Ozone Destruction Parameter : based on CFC-11
w2 :Global Warmth Parameter : based on CO2
INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT
• This room air conditioner adopts HFC refrigerant (R410A) which never destroys the ozone layer.
• Pay particular attention to the following points, though the basic installation procedure is same as that for R22 conditioners.
1As R410A has working pressure approximate 1.6 times as high as that of R22, some special tools and piping parts/
materials are required. Refer to the table below.
2Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and
installation, since it is more susceptible to contaminations than R22.
3For refrigerant piping, use clean, pressure-proof parts/materials specifically designed for R410A. (Refer to 2. Refrigerant
piping.)
4Composition change may occur in R410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent
composition change.
NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).
The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/ff[Gauge])
New Specification Current Specification
The incompatible refrigeration oil easily separates from
refrigerant and is in the upper layer inside the suction muffler.
Raising position of the oil back hole enables to back the
refrigeration oil of the upper layer to flow back to the
compressor.
Since refrigerant and refrigeration oil are compatible each,
refrigeration oil goes back to the compressor through the
lower position oil back hole.
Compressor
Suction muffler
Oil back hole
Refrigeration oil
Refrigerant
Compressor
Suction muffler
Oil back hole
Refrigeration oil /Refrigerant
Compressor
OB384--1.qxp 05.1.17 13:08 Page 3

4
-30 -20 -10 0 10 20 30 40 50 60
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
(MPa [Gauge])
R410A
R22
Conversion chart of refrigerant temperature and pressure
Saturated liquid pressure
(:)
NOTE :The unit of pressure has been changed to MPa on the
international system of units(SI unit system).
The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/ff[Gauge])
R410A tools Can R22 tools be used?
Gas leak detector
R410A has high pressures beyond the measurement range of existing
gauges. Port diameters have been changed to prevent any other refrigerant
from being charged into the unit.
Hose material and cap size have been changed to improve the pressure
resistance.
Dedicated for HFC refrigerant.
6.35 mm and 9.52 mm
Description
Clamp bar hole has been enlarged to reinforce the spring strength in the tool.
Provided for flaring work (to be used with R22 flare tool).
Provided to prevent the back flow of oil. This adapter enables you to use
vacuum pumps.
It is difficult to measure R410Awith a charging cylinder because the
refrigerant bubbles due to high pressure and high-speed vaporization
No
No
No
Yes
Yes
New
New
New
Gauge manifold
Charge hose
Torque wrench
Flare tool
Flare gauge
Vacuum pump
adapter
Electronic scale for
refrigerant charging
No : Not Substitutable for R410A Yes : Substitutable for R410A
1.Tools dedicated for the air conditioner with R410A refrigerant
The following tools are required for R410A refrigerant. Some R22 tools can be substituted for R410A tools.
The diameter of the service port on the stop valve in outdoor unit has been changed to prevent any other refrigerant being
charged into the unit. Cap size has been changed from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.
2.Refrigerant piping
1Specifications
Use the refrigerant pipes that meet the following specifications.
• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm. Never use any pipe with a thickness less
than 0.8mm, as the pressure resistance is insufficient.
Wall
thickness
Outside diameter
Pipe mm
For liquid
For gas 6.35
9.52 0.8 mm
0.8 mm Heat resisting foam plastic
Specific gravity 0.045 Thickness 8 mm
Insulation material
OB384--1.qxp 05.1.17 13:08 Page 4

5
Electronic scale for refrigerant charging
Outdoor unit
Refrigerant gas
cylinder
operating valve
Refrigerant gas cylinder
for R410A with siphon
Refrigerant (liquid)
Service port
Gauge manifold
valve (for R410A)
Union
Liquid pipe
Gas pipe
Stop valve
Indoor unit
Charge hose (for R410A)
R410A
Pipe diameter
mm
6.35
9.52 17
22
Dimension of flare nut
R22
17
22
2Flaring work and flare nut
Flaring work for R410A pipe differs from that for R22 pipe.
For details of flaring work, refer to Installation manual “FLARING WORK”.
3.Refrigerant oil
Apply the special refrigeration oil (accessories: packed with indoor unit) to the flare and the union seat surfaces.
4.Air purge
• Do not discharge the refrigerant into the atmosphere.
Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or repairs to the refrigerant
circuit.
• Use the vacuum pump for air purging for the purpose of environmental protection.
5.Additional charge
For additional charging, charge the refrigerant from liquid phase of the gas cylinder.
If the refrigerant is charged from the gas phase, composition change may occur in the refrigerant inside the cylinder and the
outdoor unit. In this case, ability of the refrigeration cycle decreases or normal operation can be impossible. However,
charging the liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly.
OB384--1.qxp 05.1.17 13:08 Page 5

PART NAMES AND FUNCTIONS
6
2
Air inlet
Piping
Drain hose
Air outlet
Drain outlet
(back and side)
OUTDOOR UNIT
MUX-2A28VB- E1
Air inlet
Piping
Drainage hose
(Back and side)
Air outlet
Drain outlet
MUX-4A73VB- E1
Air outlet
Drain outlet
Air inlet
Piping
Drainage hose
(Back and side)
MUX-2A59VB- MUX-3A63VB-
MUX-3A60VB- MUX-2A70VB- E1E1
E1E1
Combination of
the connectable
indoor units
A:
MSC-CA35VB- E1
or
MSC-GA35VB- E1
B: MSC-CA20VB- E1
or
MSC-GA20VB- E1
A: MSC-CA25VB - E1
B: or
C: MSC-GA25VB - E1
A:
B:
A:
B:
A: MSC-CA35V B- E1
or
MSC-GA35VB - E1
B: MSC-CA20VB - E1
or
C: MSC-GA20VB - E1
MUX-2A59VB- E1
MUX-3A63VB- E1
MUX-3A60VB- E1 MUX-2A28VB- E1
MUX-2A70VB- E1
MUX-4A73VB- E1
A: MSC-CA35VB - E1
or
B: MSC-GA35VB - E1
C: MSC-CA25VB - E1
or
D: MSC-GA25VB - E1
MSC-CA35VB - E1
or
MSC-GA35VB - E1
MSC-CA20VB- E1
or
MSC-GA20VB - E1
OUTDOOR UNIT
MUX-2A28VB - MUX-2A59VB - MUX-3A60VB - MUX-3A63VB -
MUX-2A70VB - MUX-4A73VB - E1E1
E1E1E1E1
INDOOR / OUTDOOR CORRESPONDENCE TABLE3
OB384--1.qxp 05.1.17 13:08 Page 6

SPECIFICATION
7
4
Outdoor model
Function
Capacity
Dehumidification
Outdoor 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:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
kW
R/h
K/h
A
A
W
A(kW)
%
A
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
MUX-2A28VB - E1
Cooling
Single phase
230V,50Hz
1,914
10
—
21
0.29
RN092VHSHT
600
C-R 3.87
C-S 6.14
RA6V33-FC
WHT-BLK 223
BLK-RED 221
780O540O255
35
49
825
1
0.90 (Room A+B)
350 (NEO22)
Single
A or B
2.4
0.9
3.20
725
98.5
2.91
3.16
Single
A
3.5
1.4
5.73
1,280
97.1
5.16
2.65
Double
A+B
3.5+2.4
1.4+0.9
8.96
2,005
97.3
8.39
2.84
Double
A+B
1.4O2
0.2O2
3.25
730
97.7
2.96
3.50
MUX-2A59VB - E1
Cooling
Single phase
230V,50Hz
Compressor Electrical
data
Fan motor
Special remarks
Capacity
Coefficient of performance (C.O.P)
Outdoor unit power supply
Indoor unit No. Single
B
2.4
0.9
2,460
20
3.51
785
—
97.2
48
2.94
0.57
2.93
MC1 : RN145VHSHT, MC2 : RN092VHSHT
MC1 : 1,000, MC2 : 600
RA6V60-GA
WHT-BLK 90
BLK-RED 146
840O640O330
66
52
730
1
1.00 (Room A)
0.80 (Room B)
MC1 : 620 (NEO22), MC2 : 350 (NEO22)
C-R 2.43
C-S 3.80
MC1 : , MC2 : C-R 3.87
C-S 6.14
NOTE: Test conditions are based on ISO 5151.
Cooling : Indoor DB27°C WB19°C
Outdoor DB35°C WB24°C
Indoor-Outdoor piping length : 5m
NOTE: As for specification of the indoor units, refer to service manual OB393 (MSC-CA20/25/35VA- ) or
OB385 (MSC-GA20/25/35VA- ).
E1
E1
OB384--1.qxp 05.1.17 13:08 Page 7

8
Outdoor model
Function
Capacity
Dehumidification
Outdoor 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:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
kW
R/h
K/h
A
A
W
A(kW)
%
A
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
Single phase
230V,50Hz
Double
A+B or A+C
2.6+2.8
0.9+1.1
2,460
20
8.18
1,850
—
98.3
47
7.61
0.57
2.81
MC1 : RN099VHSHT, MC2 : RN125VHSHT
MC1 : 650, MC2 : 800
RA6V60-GA
WHT-BLK 90
BLK-RED 146
840O640O330
65
52
730
1
0.80 (Room A)
1.00 (Room B+C)
MC1 : 350 (NEO22), MC2 : 350 (NEO22)
MUX-3A60VB - E1
Cooling
Compressor Electrical
data
Fan motor
Special remarks
Capacity
Coefficient of performance (C.O.P)
Outdoor unit power supply
Indoor unit No. Single
A
2.6
0.9
3.64
815
97.3
3.07
3.06
Single
B or C
2.9
1.2
4.86
1,075
96.2
4.29
2.61
Double
B+C
1.75O2
0.3O2
4.86
1,090
97.5
4.29
3.02
Triple
A+B+C
2.5+1.75O2
0.8+0.3O2
8.41
1,885
97.5
7.84
3.02
C-R 3.40
C-S 4.56
MC1 : , MC2 : C-R 2.86
C-S 5.72
NOTE: Test conditions are based on ISO 5151.
Cooling : Indoor DB27°C WB19°C
Outdoor DB35°C WB24°C
Indoor-Outdoor piping length : 5m
NOTE: As for specification of the indoor units, refer to service manual OB393 (MSC-CA20/25/35VA- ) or
OB385 (MSC-GA20/25/35VA- ).
E1
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OB384--1.qxp 05.1.17 13:08 Page 8

9
Capacity
Dehumidification
Outdoor 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:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
kW
R/h
K/h
A
A
W
A(kW)
%
A
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
Cooling
Single phase
230V,50Hz
Double
A+B or A+C
3.5+2.4
1.4+0.9
2,460
20
8.92
1,975
—
96.3
48
8.01
0.57
2.88
MC1 : RN145VHSHT, MC2 : RN092VHSHT
MC1 : 1,000, MC2 : 600
RA6V60-GA
WHT-BLK 90
BLK-RED 146
840O640O330
67
52
730
1
0.85 (Room A)
0.85 (Room B+C)
MC1 : 620 (NEO22), MC2 : 350 (NEO22)
MUX-3A63VB - E1
Compressor Electrical
data
Fan motor
Special remarks
Capacity
Coefficient of performance (C.O.P)
Outdoor unit power supply
Indoor unit No. Single
A
3.5
1.4
5.73
1,280
97.1
5.02
2.65
Single
B or C
2.4
0.9
3.64
815
97.3
2.99
2.82
Double
B+C
1.45O2
0.4
3.69
830
97.8
2.99
3.22
Triple
A+B+C
3.4+1.45O2
1.4+0.4
8.84
1,980
97.4
8.01
3.01
C-R 2.43
C-S 3.80
MC1 : , MC2 : C-R 3.87
C-S 0.14
Outdoor model
Function
NOTE: Test conditions are based on ISO 5151.
Cooling : Indoor DB27°C WB19°C
Outdoor DB35°C WB24°C
Indoor-Outdoor piping length 5m
NOTE: As for specification of the indoor units, refer to service manual OB393 (MSC-CA20/25/35VA- ) or
OB385 (MSC-GA20/25/35VA- ).
E1
E1
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10
Outdoor model
Function
Capacity
Dehumidification
Outdoor 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:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
kW
R/h
K/h
A
A
W
A(kW)
%
A
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
Compressor Electrical
data
Fan motor
Special remarks
Capacity
Coefficient of performance (C.O.P)
Outdoor unit power supply
Indoor unit No.
MUX-2A70VB - E1
Cooling
Single phase 230V,50Hz
2,460
20
—
54
0.57
MC1 : RN145VHSHT, MC2 : RN145VHSHT
MC1 : 1,000, MC2 : 1,000
RA6V60-GA
WHT-BLK 90
BLK-RED 146
840O640O330
68
52
730
1
0.95 (Room A)
0.95 (Room B)
MC1 : 620 (NEO22), MC2 : 620 (NEO22)
Single
A or B
3.5
1.4
5.88
1,300
96.1
5.31
2.61
Double
A+B
3.5O2
1.4O2
11.49
2,540
96.1
10.92
2.67
C-R 2.43
C-S 3.80
MC1 : , MC2 : C-R 2.43
C-S 3.80
NOTE: Test conditions are based on ISO 5151.
Cooling : Indoor DB27°C WB19°C
Outdoor DB35°C WB24°C
Indoor-Outdoor piping length : 5m
NOTE: As for specification of the indoor units, refer to service manual OB393 (MSC-CA20/25/35VA- ) or
OB385 (MSC-GA20/25/35VA- ).
E1
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11
Outdoor model
Function
Capacity
Dehumidification
Outdoor 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:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
kW
R/h
K/h
A
A
W
A(kW)
%
A
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
Compressor Electrical
data
Fan motor
Special remarks
Capacity
Coefficient of performance (C.O.P)
Outdoor unit power supply
Indoor unit No.
MUX-4A73VB - E1
Cooling
Single phase 230V,50Hz
2,760
20
—
52
0.53
MC1 : RN145VHSHT, MC2 : RN125VHSHT
MC1 : 1,000, MC2 : 800
RA6V60-FA
WHT-BLK 79
BLK-RED 80
840O850O330
76
52
730
1
1.05 (Room A+B)
1.05 (Room C+D)
MC1 : 620 (NEO22), MC2 : 350 (NEO22)
Single
A or B
3.4
1.2
5.28
1,180
97.2
4.75
2.79
Single
C or D
2.75
1.1
4.54
1,015
97.2
4.01
2.62
Double
A+B
1.95O2
0.2O2
5.46
1,210
96.4
4.93
3.02
Double
A+C or A+D
or
B+C or B+D
Triple
A+B+C
or
A+B+D
Triple
A+C+D
or
B+C+D
3.4+2.7
1.2+1.1
9.57
2,095
95.2
9.04
2.81
Double
C+D
1.7O2
0.3O2
4.78
1,060
96.4
4.25
3.01
1.95O2+2.8
0.2O2+1.1
9.61
2,105
95.2
9.08
3.02
3.4+1.7O2
1.2+0.3O2
9.66
2,140
96.3
9.13
3.02
Four
A+B+C+D
1.95O2+1.7O2
0.2O2+0.3O2
9.75
2,210
98.6
9.22
3.09
C-R 2.43
C-S 3.80
MC1 : , MC2 : C-R 2.86
C-S 5.72
NOTE: Test conditions are based on ISO 5151.
Cooling : Indoor DB27°C WB19°C
Outdoor DB35°C WB24°C
Indoor-Outdoor piping length : 5m
NOTE: As for specification of the indoor units, refer to service manual OB393 (MSC-CA20/25/35VA- ) or
OB385 (MSC-GA20/25/35VA- ).
E1
E1
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12
NOISE CRITERIA CURVES5
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling : DB27:WB19:
MUX-2A28VB- E1
COOL
FUNCTION
49
SPL(dB(A)) LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling :DB35:WB24:
COOL
FUNCTION
52
SPL(dB(A)) LINE
MUX-2A59VB - E1
MUX-3A60VB - E1
MUX-3A63VB - E1
MUX-2A70VB - E1
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling :DB35:WB24:
COOL
FUNCTION
52
SPL(dB(A)) LINE
MUX-4A73VB - E1
OB384--1.qxp 05.1.17 13:08 Page 12

13
OUTLINES AND DIMENSIONS
6
320
25
10-
126
76
120
56
260
10
780
500
122
40
540
320 285 255
Service panel
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) [9.52
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) [6.35
Air out
Air in
Air in
176
226
109 32
110
147
Drainage
3holes [33
100mm or more
100mm or more
100mm or more
350mm or more
REQUIRED SPACE
400mm or more
MUX-2A28VB- E1
OUTDOOR UNIT Unit: mm
MUX-2A59VB- E1
500
840 61
264
10°
10°
Service panel
Open as a rule
500mm or more if
the front and both
sides are open
100mm or more
200mm or more if
there are obstacles
to both sides
Open as a rule
500mm or more if the back,
both sides and top are open 350mm or more
100mm or more
B UNIT
A UNIT
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) {9.52
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) {9.52
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) {6.35
65
80
121
40
438
Air in
Air out
Air in
273
100
125
320
30
330
640
360
76
505050
Drainage
3holes {33
}
}
34
OB384--1.qxp 05.1.17 13:08 Page 13

14
MUX-3A60VB-
MUX-3A63VB- E1
E1
OUTDOOR UNIT
500
840 61
264
10°
10°
Service panel
Open as a rule
500mm or more if
the front and both
sides are open
100mm or more
200mm or more if
there are obstacles
on both sides
Open as a rule
500mm or more if the back,
both sides and top are open 350mm or more
100mm or more
B UNIT
A UNIT
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) {9.52
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) {6.35
65
121
40
438
Air in
Air out
Air in
273
100
125
320
30
330
640
360
76
5050505050
Drainage
3 holes {33
}
C UNIT
}
}
34
Unit: mm
MUX-2A70VB- E1
500
840 61
264
10°
10°
Service panel
Open as a rule
500mm or more if
the front and both
sides are open
100mm or more
200mm or more if
there are obstacles
on both sides
Open as a rule
500mm or more if the back,
both sides and top are open 350mm or more
100mm or more
B UNIT
A UNIT
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) {9.52
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) {6.35
80
121
40
438
Air in
Air out
Air in
273
100
125
320
30
330
640
360
76
505050
Drainage
3 holes {33
}
}
34
OB384--1.qxp 05.1.17 13:08 Page 14

15
Service panel
D Unit
C Unit
B Unit
A Unit
{33
Drainage
3 holes
Air out
Air in
Air in
125
330
500
100
273438 40
30
360
34
430 850
840
121
80
61
65
76
50
5050 5050 50
50
260
10°
10°
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) {6.35
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) {9.52
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) {9.52
Open as a rule
500mm or more if
the front and both
sides are open
100mm or more
200mm or more if
there are obstacles
on both sides
Open as a rule
500mm or more if the back,
both sides and top are open 350mm or more
100mm or more
MUX-4A73VB- E1
OUTDOOR UNIT Unit: mm
OB384--1.qxp 05.1.17 13:08 Page 15

16
WIRING DIAGRAM
7
OUTDOOR UNIT
PE
BLU
BRN
F62
DSAR
CIRCUIT BREAKER
WHT
1
2
TB3
1
BLK
RED
C2
2
1
4
3
X1
X1
X2
X2 4
3
BLU
BRN BRN BRN
F61
BRN BRN
WHT
WHT WHT
WHT
BRN
52C
NO52C COM
3
1
RED
BLU
RED
BLK
21R
TB2 MF
WHT
2
WHT
5
5
6
6
R
SMC
C
X2
N
L
POWER SUPPLY
~ / N
230V
50Hz
TB1
BLK
8
8
7
7
WHT
ORN
YLW
TO INDOOR
UNIT No.A
CONNECTING
12V
X1
1
2
1
1
2
2
TO INDOOR
UNIT No.B
CONNECTING
12V 2
TB3
C1
BLU
BLU
BLU
1
2
BLU BLU
BLU
1
2
BLU
BLU BLU
BLU
BLU
1
2
21R2
21R1
BLU
BLU
BLU
SYMBOL
21R1
21R2
52C
SYMBOL
MF
TB1,TB2,TB3
X1
X2
21R
SYMBOL
C1
C2
DSAR
F61,F62
MC
NAME NAME NAME
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE(2A)
COMPRESSOR(INNER PROTECTOR)
OUTDOOR FAN MOTOR(INNER FUSE)
TERMINAL BLOCK
RELAY(A)
RELAY(B)
SOLENOID COIL
SOLENOID COIL(A)
SOLENOID COIL(B)
COMPRESSOR CONTACTOR
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
2. Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
MUX-2A28VB - E1
MODEL WIRING DIAGRAM
OB384--1.qxp 05.1.17 13:08 Page 16

17
1
2
3
123
2
1
3
RED
RED
NR61
T61
1
2
4
34
3
C61
LD1
WHT
WHT
OUTDOOR CONTROL
P.C. BOARD
BRN
BLU
BRN
BLU
BRN
X522 X521 BLK
SR861
LD2
RED
BLK
WHT
6
52 3 41
BRN
BLU
BLU
TB4
CN90
TB2
X521X522
F61
CN73 CN71
TO INDOOR
UNIT B
CONNECTING
12V
PE
CIRCUIT BREAKER
GRN/YLW
ORN
CN91
BLU
YLW
BLU
RED
RED
TO INDOOR
UNITA
CONNECTING
12V
1
2
C2
C1
R C
S
C
R
S
MC2
MF61
MC1
BLK
TB1
POWER SUPPLY
~/N
230V
50Hz
1
2
L
N
DSAR
BRN
OUTDOOR UNIT
SYMBOL
TB1
TB2~TB4
T61
X521
X522
SYMBOL
MC1
MC2
MF61
NR61
SR861
SYMBOL
C1
C2
C61
DSAR
F61
NAME NAME NAME
COMPRESSOR CAPACITOR(MC1)
COMPRESSOR CAPACITOR(MC2)
OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE(3.15A)
COMPRESSOR(INNER PROTECTOR)
COMPRESSOR(INNER PROTECTOR)
OUTDOOR FAN MOTOR (INNER PROTECTOR)
SURGE ABSORBER
OUTDOOR FAN RELAY
TERMINAL BLOCK
TERMINAL BLOCK
TRANSFORMER
COMPRESSOR CONTACTOR(MC1)
COMPRESSOR CONTACTOR(MC2)
MUX-2A59VB -
MUX-2A70VB - E1
E1
MODELS WIRING DIAGRAM
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
2. Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
OB384--1.qxp 05.1.17 13:08 Page 17

18
1 2 3
1 2 3
123
2 1 3
1 2 31 2 31 2 3
21R421R3
NR61
T61
1 2
43
43
C61
LD1
WHT
WHT
OUTDOOR CONTROL P.C. BOARD
BRN
BLU
BRN
BLU
BRN
BLU
BLU
X522 X521
BLK
SR865
SR866
SR863
SR861
LD2
RED
RED
RED
BLK
WHT
652 3 41
BRN
BLU
BLU
TB4
CN86
CN85
CN81
CN91
CN90
TB3 TB2
X521
BLU
BLU
X522
BLU
BLU
21RB
F61
CN74 CN73 CN71
TO INDOOR UNIT B CONNECTING 12V
PE
CIRCUIT BREAKER
GRN/YLW
WHT BLU ORN BLU YLW BLU RED
RED
TO INDOOR UNITA CONNECTING 12V
1 2 1 2
C2
C1
R C
S
CR
S
MC2
TO INDOOR UNIT C CONNECTING 12V
MF61
MC1
BLK
TB1
POWER SUPPLY ~/N 230V 50Hz
1 2
L N
DSAR
BRN
OUTDOOR UNIT
SYMBOL
MF61 NR61
SR861 SR863 SR865 SR866
TB1
SYMBOL
C1 C2
C61
DSAR
F61
MC1 MC2
NAME NAME NAME
COMPRESSOR CAPACITOR(MC1) COMPRESSOR CAPACITOR(MC2) OUTDOOR FAN CAPACITOR SURGE ABSORBER FUSE(3.15A) COMPRESSOR(INNER PROTECTOR) COMPRESSOR(INNER PROTECTOR)
OUTDOOR FAN MOTOR(INNER PROTECTOR) SURGE ABSORBER OUTDOOR FAN RELAY RELAY (21RB) RELAY (C) (21R4) RELAY (B) (21R3) TERMINAL BLOCK
TERMINAL BLOCK TRANSFORMER
COMPRESSOR CONTACTOR(MC1) COMPRESSOR CONTACTOR(MC2) SOLENOID COIL SOLENOID COIL (B) SOLENOID COIL (C)
SYMBOL
TB2~TB4
T61
X521
X522
21RB
21R3
21R4
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
2. Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
MUX-3A60VB - E1
MODEL WIRING DIAGRAM
OB384--1.qxp 05.1.17 13:08 Page 18

19
1 2 3
1 2 3
123
2 1 3
1 2 31 2 31 2 3
21R421R3
NR61
T61
1 2
43
43
C61
LD1
WHT
WHT
OUTDOOR CONTROL P.C. BOARD
BRN
BLU
BRN
BLU
BRN
BLU
BLU
X522 X521
BLK
SR865
SR866
SR863
SR861
LD2
RED
RED
RED
BLK
WHT
652 3 41
BRN
BLU
BLU
TB4
CN86
CN85
CN81
CN91
CN90
TB3 TB2
X521
BLU
BLU
X522
BLU
BLU
21RB
F61
CN74 CN73 CN71
TO INDOOR UNIT B CONNECTING 12V
PE
CIRCUIT BREAKER
GRN/YLW
WHT BLU ORN BLU YLW BLU RED
RED
TO INDOOR UNITA CONNECTING 12V
1 2 1 2
C2
C1
R C
S
CR
S
MC2
TO INDOOR UNIT C CONNECTING 12V
MF61
MC1
BLK
TB1
POWER SUPPLY ~/N 230V 50Hz
1 2
L N
DSAR
BRN
OUTDOOR UNIT
SYMBOL
MF61 NR61
SR861 SR863 SR865 SR866
TB1
SYMBOL
C1 C2
C61
DSAR
F61
MC1 MC2
NAME NAME NAME
COMPRESSOR CAPACITOR(MC1) COMPRESSOR CAPACITOR(MC2) OUTDOOR FAN CAPACITOR SURGE ABSORBER FUSE(3.15A) COMPRESSOR(INNER PROTECTOR) COMPRESSOR(INNER PROTECTOR)
OUTDOOR FAN MOTOR(INNER PROTECTOR) SURGE ABSORBER OUTDOOR FAN RELAY RELAY (21RB) RELAY (C) (21R4) RELAY (B) (21R3) TERMINAL BLOCK
TERMINAL BLOCK TRANSFORMER
COMPRESSOR CONTACTOR(MC1) COMPRESSOR CONTACTOR(MC2) SOLENOID COIL SOLENOID COIL (B) SOLENOID COIL (C)
SYMBOL
TB2~TB4
T61
X521
X522
21RB
21R3
21R4
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
2. Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
MUX-3A63VB - E1
MODEL WIRING DIAGRAM
OB384--1.qxp 05.1.17 13:08 Page 19

20
DSAR
CIRCUIT BREAKER
L N
2 1
2 1 1 2 1 2
BLK
RED
MF61
21R1
BLU
BLU
RED
RED
OUTDOOR CONTROL P.C. BOARD
T61
3 4
43
X521
X522
MC1
S
R C
MC2
S
R C
C1
C2
BLK
RED WHT RED
BLK
WHT
X522 X521
13
3 1 3 1 1 3 1 3
621
CONNECTING TO INDOOR
POWER SUPPLY
WHT BLU ORN BLU BRN BLU YLW
CN74CN73CN72CN71
TB1
TB3 TB2
2 2 2 2
2
BRN BLU
TB4
2 1
BLU
F61 BRN
BLU
SR861
CN91 43 5
SR868
BLU BLU BRN BRN
LD1
LD2
C61
NR61
CN90
WHT
1 2 3 1 2 3
21R2
BLU
BLU SR867
21R3
BLU
BLU SR866
1 2 3
BLU
BLU
21R4
123
SR865
BLU
BLU
21RA
123
SR864
BLU
BLU
21RB
123
SR863
CN83 CN84 CN85 CN86 CN81CN82
~/N
12V
230V 50Hz
UNIT C
TO INDOOR CONNECTING
12V
UNITA
PE
GRN/YLW
TO INDOOR CONNECTING UNIT D
12V
CONNECTING TO INDOOR
12V
UNIT B
BRN
SYMBOL
SR861 SR863 SR864 SR865 SR866 SR867 SR868
TB1~TB4
T61
SYMBOL
C1 C2
C61
DSAR
F61
MC1 MC2
MF61 NR61
NAME NAME NAME
COMPRESSOR CAPACITOR(MC1) COMPRESSOR CAPACITOR(MC2) OUTDOOR FAN CAPACITOR SURGE ABSORBER FUSE(3.15A) COMPRESSOR(INNER PROTECTOR) COMPRESSOR(INNER PROTECTOR) OUTDOOR FAN MOTOR(INNER PROTECTOR) SURGE ABSORBER
OUTDOOR FAN RELAY RELAY (21RB) RELAY (21RA) RELAY (D) (21R4) RELAY (C) (21R3) RELAY (B) (21R2) RELAY (A) (21R1) TERMINAL BLOCK TRANSFORMER
COMPRESSOR CONTACTOR(MC1)
COMPRESSOR CONTACTOR(MC2)
SOLENOID COIL (BALANCE) SOLENOID COIL (BALANCE) SOLENOID COIL (A) SOLENOID COIL (B) SOLENOID COIL (C) SOLENOID COIL (D)
SYMBOL
X521
X522
21RA
21RB
21R1
21R2
21R3
21R4
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
2. Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
OUTDOOR UNIT
MUX-4A73VB - E1
MODEL WIRING DIAGRAM
OB384--1.qxp 05.1.17 13:08 Page 20