Mitsubishi Electric MXZ-2B30VA User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 2
2. PART NAMES AND FUNCTIONS····················· 4
3. SPECIFICATION················································ 5
4. NOISE CRITERIA CURVES···························· 13
5. OUTLINES AND DIMENSIONS ······················ 15
6. WIRING DIAGRAM·········································· 19
7. REFRIGERANT SYSTEM DIAGRAM············· 25
8. PERFORMANCE CURVES····························· 32
9. ACTUATOR CONTROL··································· 59
10. SERVICE FUNCTIONS···································· 60
11. TROUBLESHOOTING····································· 64
12. DISASSEMBLY INSTRUCTIONS···················· 89
INDOOR UNITS COMBINATION SHEETS
Models
No. OBH554
REVISED EDITION-D
HFC
utilized
R410A
SPLIT-TYPE AIR CONDITIONERS
MXZ-4B80VA
OUTDOOR UNIT
Indoor unit service manual
MSZ-FA•VA Series (OB371)
MSZ-FD•VA Series (OBH488)
MSZ-GA•VA Series (OB378, OB388)
MSZ-CB•VA Series (OB441)
MSZ-GC•VA Series (OBH468)
MSZ-GE•VA Series (OBH515)
MSZ-SF•VA Series (OBH555)
MFZ-KA•VA Series (OB409)
MLZ-KA•VA Series (OBH483)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
PARTS CATALOG (OBB554)
Please void OBH554 REVISED EDITION-C.
MXZ-2B30VA - E1 MXZ-4B71VA - E1
MXZ-2B40VA - E1 MXZ-4B80VA - E1
MXZ-2B52VA - E1 MXZ-5B100VA - E1
MXZ-3B54VA - E1
MXZ-3B68VA - E1
Revision D:
• FAILURE MODE RECALL FUNCTION
has been corrected.
• Some descriptions have been modified.

2
TECHNICAL CHANGES
1
MXZ-4A80VA - E2 MXZ-4B80VA - E1
1. Indoor units combinations have been added (15/20 class).
2. Electronic control P.C. board has been changed.
3. Noise filter P.C. board has been changed.
4. Power board has been changed.
5. LEV coil has been changed.
MXZ-5A100VA - E1 MXZ-5B100VA - E1
1. Indoor units combinations have been added (15/20 class).
2. Electronic control P.C. board has been changed.
3. Noise filter P.C. board has been changed.
4. Power board has been changed.
5. LEV coil has been changed.
MXZ-3A54VA - E7 MXZ-3B54VA - E1
1. Indoor units combinations have been added (15/20 class).
2. Electronic control P.C. board has been changed.
3. Noise filter P.C. board has been changed.
4. Power board has been changed.
5. LEV coil has been changed.
MXZ-3B68VA - E1
1. New model
Revision B :
• MXZ-2B30VA-
E1
and MXZ-2B52VA-
E1
have been added.
Revision A :
• MXZ-2B40VA-
E1
, MXZ-3B54VA-
E1
, MXZ-3B68VA-
E1
and MXZ-4B71VA-
E1
have been added.
• Power board of
MXZ-4B80VA-
E1
and MXZ-5B100VA-
E1
has been changed .
Use the specified refrigerant only
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the spec labels provided with our products.
We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by
failure to follow the instructions.
Revision C:
• Errors in TROUBLESHOOTING have been corrected.
Revision D:
• FAILURE MODE RECALL FUNCTION has been corrected.
• Some descriptions have been modified.
OBH554D

3
MXZ-4A71VA - E7 MXZ-4B71VA - E1
1. Indoor units combinations have been added (15/20 class).
2. Electronic control P.C. board has been changed.
3. Noise filter P.C. board has been changed.
4. Power board has been changed.
5. LEV coil has been changed.
6. Compressor has been changed. (SNB130FGBH1T SNB172FEGH1T)
MXZ-2A30VA - E2 MXZ-2B30VA - E1
1. Indoor units combinations have been added (15/20 class).
2. Compressor has been changed. (KNB073FGDH KNB073FGDHC)
3. Inverter P.C. board has been changed.
4. Interface P.C. board has been changed.
5. LEV coil has been changed.
MXZ-2A52VA - E2 MXZ-2B52VA - E1
1. Indoor units combinations have been added (15/20/42 class).
2. Compressor has been changed. (SNB130FKMH SNB130FGBHT)
3. Inverter P.C. board has been changed.
4. Interface P.C. board has been changed.
5. LEV coil has been changed.
MXZ-2A40VA - E2 MXZ-2B40VA - E1
1. Indoor units combinations have been added (15/20 class).
2. Compressor has been changed. (KNB092FEDH KNB092FFDHC)
3. Inverter P.C. board has been changed.
4. Interface P.C. board has been changed.
5. LEV coil has been changed.
OBH554D

4
PART NAMES AND FUNCTIONS
2
ACCESSORIES
Drain socket
Drain cap (MXZ-3B/4B/5B)
1
2
MXZ-4B80VA
MXZ-5B100VA
Air outlet
Drain outlet
Air inlet
(Back and side)
Air outlet
Drain outlet
Air inlet
(Back and side)
MXZ-3B54VA
MXZ-3B68VA
MXZ-4B71VA
MXZ-2B30VA
MXZ-2B40VA
MXZ-2B52VA
Air inlet
Air outlet
Drain outlet
Piping
Drain hose
(Back and side)
OBH554D

5
SPECIFICATION
3
Outdoor model
Indoor units number
Piping total length
Connecting pipe length
Height difference (Indoor ~ Outdoor)
Height difference (Indoor ~ Indoor)
Function
Capacity [Rated (Min.-Max.) Hz]
Dehumidification
Outdoor air flow
Breaker capacity
Running current
Power input
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance (at 20 °C)
Model
Winding
resistance (at 20 °C)
Dimensions W x H x D
Weight
Sound level (High/Low)
Fan speed (High/Low)
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
m
m
m
m
kW
/h
m3/h
A
A
W
%
A
A
A
W
Ω
Ω
mm
kg
dB
rpm
kg
cc
Compressor
2 Electrical data
Fan motor
Special remarks Capacity System
Coefficient of performance(C.O.P) 2
Outdoor unit power supply
MXZ-2B30VA
Single phase
230 V, 50 Hz
1 to 2
Max. 20
Max. 15
Refer to 9
Refer to 9
10
90
3.94
0.35
KNB073FGDHC
750
U-V 1.70
V-W 1.70 W-U 1.70
RC0J50-CI
BLK-WHT 14.2
WHT-RED 14.2 RED-BLK 14.2
800 x 550 x 285
33
1.15
320 (NEO22)
Cooling
3.0 (1.1 - 4.0)
—
2,025
2.71
560
2.36
5.36
46
880
Heating
4.0 (1.0 - 4.4)
—
1,855
3.94
815
3.59
4.91
47
810
COOLING INDOOR Dry-bulb temperature27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature20.0°C
OUTDOOR Dry-bulb temperature7.0°C Wet-bulb temperature 6.0°C
1 Measured under rated operating frequency.
2 Electrical data is for only outdoor unit.
NOTE:•Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
OBH554D

6
Outdoor model
Indoor units number
Piping total length
Connecting pipe length
Height difference (Indoor ~ Outdoor)
Height difference (Indoor ~ Indoor)
Function
Capacity [Rated (Min.-Max.) Hz]
Dehumidification
Outdoor air flow
Breaker capacity
Running current
Power input
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance (at 20 °C)
Model
Winding
resistance (at 20 °C)
Dimensions W x H x D
Weight
Sound level
Fan speed
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
m
m
m
m
kW
/h
m3/h
A
A
W
%
A
A
A
W
Ω
Ω
mm
kg
dB
rpm
kg
cc
Compressor
2 Electrical data
Fan motor
Special remarks Capacity System
Coefficient of performance(C.O.P) 1 2
Outdoor unit power supply
MXZ-2B40VA
Single phase
230 V, 50 Hz
1 to 2
Max. 30
Max. 20
Refer to 9
Refer to 9
15
95
4.00
0.35
KNB092FFDHC
1,100
U-V 1.70
V-W 1.70 W-U 1.70
RC0J50-CI
BLK-WHT 14.2
WHT-RED 14.2 RED-BLK 14.2
800 x 550 x 285
35
1.3
320 (NEO22)
Cooling
4.0 (1.1 - 4.5)
—
1,750
4.00
875
3.65
4.57
47
840
Heating
4.5 (1.0 - 5.0)
—
1,595
3.98
870
3.60
5.17
48
770
COOLING INDOOR Dry-bulb temperature27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature20.0°C
OUTDOOR Dry-bulb temperature7.0°C Wet-bulb temperature 6.0°C
1 Measured under rated operating frequency.
2 Electrical data is for only outdoor unit.
NOTE:•Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
OBH554D

7
MXZ-2B52VA
Single phase
230 V, 50 Hz
1 to 2
Max. 30
Max. 20
Refer to 9
Refer to 9
15
97
7.22
0.35
SNB130FGBHT
1,400
U-V 0.98
V-W 0.98 W-U 0.98
RC0J50-CI
BLK-WHT 14.2
WHT-RED 14.2 RED-BLK 14.2
800 x 550 x 285
38
1.3
450 (NEO22)
Cooling
5.2 (1.1 - 6.0)
—
1,975
5.83
1,300
5.48
4.00
49
900
Heating
6.4 (1.0 - 7.0)
—
2,000
7.22
1,610
6.87
3.98
50
910
Outdoor model
Indoor units number
Piping total length
Connecting pipe length
Height difference (Indoor ~ Outdoor)
Height difference (Indoor ~ Indoor)
Function
Capacity [Rated (Min.-Max.) Hz]
Dehumidification
Outdoor air flow
Breaker capacity
Running current
Power input
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance (at 20 °C)
Model
Winding
resistance (at 20 °C)
Dimensions W x H x D
Weight
Sound level (High/Low)
Fan speed (High/Low)
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
m
m
m
m
kW
/h
m3/h
A
A
W
%
A
A
A
W
Ω
Ω
mm
kg
dB
rpm
kg
cc
Compressor
2 Electrical data
Fan motor
Special remarks Capacity System
Coefficient of performance(C.O.P) 2
Outdoor unit power supply
COOLING INDOOR Dry-bulb temperature27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature20.0°C
OUTDOOR Dry-bulb temperature7.0°C Wet-bulb temperature 6.0°C
1 Measured under rated operating frequency.
2 Electrical data is for only outdoor unit.
NOTE:•Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
OBH554D

8
COOLING INDOOR Dry-bulb temperature27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature20.0°C
OUTDOOR Dry-bulb temperature7.0°C Wet-bulb temperature 6.0°C
1 Measured under rated operating frequency.
2 Electrical data is for only outdoor unit.
NOTE:•Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
Outdoor model
Indoor units number
Piping total length
Connecting pipe length
Height difference (Indoor ~ Outdoor)
Height difference (Indoor ~ Indoor)
Function
Capacity [Rated (Min.-Max.) Hz]
Dehumidification
Outdoor air flow
Breaker capacity
Running current
Power input
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance (at 20 °C)
Model
Winding
resistance (at 20°C)
Dimensions W x H x D
Weight
Sound level
Fan speed
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
m
m
m
m
kW
/h
m3/h
A
A
W
%
A
A
A
W
Ω
Ω
mm
kg
dB
rpm
kg
cc
Compressor
2 Electrical data
Fan motor
Special remarks Capacity System
Coefficient of performance(C.O.P)
MXZ-3B54VA
Single phase
230 V, 50 Hz
1 to 3
Max. 50
Max. 25
Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
25
99
6.43
0.2
SNB130FGBH1T
1,400
U-V 0.98
V-W 0.98 W-U 0.98
RC0J60-AA
BLK-WHT 15.2
WHT-RED 15.2 RED-BLK 15.2
840 x 710 x 330
57
2.7
700(NEO22)
Cooling
5.4 (2.9-6.8)
—
2,525
5.23
1,190
5.03
4.23
47
650
Heating
7.0 (2.6-9.0)
—
2,580
6.43
1,465
6.23
5.04
51
660
Outdoor unit power supply
OBH554D

9
COOLING INDOOR Dry-bulb temperature27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature20.0°C
OUTDOOR Dry-bulb temperature7.0°C Wet-bulb temperature 6.0°C
1 Measured under rated operating frequency.
2 Electrical data is for only outdoor unit.
NOTE:•Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
Outdoor model
Indoor units number
Piping total length
Connecting pipe length
Height difference (Indoor ~ Outdoor)
Height difference (Indoor ~ Indoor)
Function
Capacity [Rated (Min.-Max.) Hz]
Dehumidification
Outdoor air flow
Breaker capacity
Running current
Power input
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance (at 20 °C)
Model
Winding
resistance (at 20°C)
Dimensions W x H x D
Weight
Sound level
Fan speed
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
m
m
m
m
kW
/h
m3/h
A
A
W
%
A
A
A
W
Ω
Ω
mm
kg
dB
rpm
kg
cc
Compressor
2 Electrical data
Fan motor
Special remarks Capacity System
Coefficient of performance(C.O.P)
MXZ-3B68VA
Single phase
230 V, 50 Hz
1 to 4
Max. 50
Max. 25
Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
25
99
9.00
0.2
SNB172FEGH1T
1,800
U-V 0.72
V-W 0.72 W-U 0.72
RC0J60-AA
BLK-WHT 15.2
WHT-RED 15.2 RED-BLK 15.2
840 x 710 x 330
57
2.7
700(NEO22)
Cooling
6.8 (3.7-8.4)
—
2,525
7.80
1,775
7.60
3.83
48
650
Heating
8.6 (3.4-10.6)
—
2,580
9.00
2,050
8.80
4.20
52
660
Outdoor unit power supply
OBH554D

10
COOLING INDOOR Dry-bulb temperature27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature20.0°C
OUTDOOR Dry-bulb temperature7.0°C Wet-bulb temperature 6.0°C
1 Measured under rated operating frequency.
2 Electrical data is for only outdoor unit.
NOTE:•Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
Outdoor model
Indoor units number
Piping total length
Connecting pipe length
Height difference (Indoor ~ Outdoor)
Height difference (Indoor ~ Indoor)
Function
Capacity [Rated (Min.-Max.) Hz]
Dehumidification
Outdoor air flow
Breaker capacity
Running current
Power input
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance (at 20 °C)
Model
Winding
resistance (at 20°C)
Dimensions W x H x D
Weight
Sound level
Fan speed
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
m
m
m
m
kW
/h
m3/h
A
A
W
%
A
A
A
W
Ω
Ω
mm
kg
dB
rpm
kg
cc
Compressor
2 Electrical data
Fan motor
Special remarks Capacity System
Coefficient of performance(C.O.P)
MXZ-4B71VA
Single phase
230 V, 50 Hz
1 to 4
Max. 60
Max. 25
Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
25
99
7.49
0.2
SNB172FEGH1T
2,000
U-V 0.72
V-W 0.72 W-U 0.72
RC0J60-AA
BLK-WHT 15.2
WHT-RED 15.2 RED-BLK 15.2
840 x 710 x 330
58
2.7
700(NEO22)
Cooling
7.1 (3.7-8.8)
—
2,525
7.38
1,680
7.18
4.54
48
650
Heating
8.6 (3.4-10.7)
—
2,580
7.49
1,705
7.29
4.78
52
660
Outdoor unit power supply
OBH554D

11
COOLING INDOOR Dry-bulb temperature27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature20.0°C
OUTDOOR Dry-bulb temperature7.0°C Wet-bulb temperature 6.0°C
1 Measured under rated operating frequency.
2 Electrical data is for only outdoor unit.
NOTE:•Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
Outdoor model
Indoor units number
Piping total length
Connecting pipe length
Height difference (Indoor ~ Outdoor)
Height difference (Indoor ~ Indoor)
Function
Capacity [Rated (Min.-Max.) Hz]
Dehumidification
Outdoor air flow
Breaker capacity
Running current
Power input
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance (at 20 °C)
Model
Winding
resistance (at 20°C)
Dimensions W x H x D
Weight
Sound level
Fan speed
Refrigerant filling
capacity (R410A)
Refrigeration oil (Model)
m
m
m
m
kW
/h
m3/h
A
A
W
%
A
A
A
W
Ω
Ω
mm
kg
dB
rpm
kg
cc
Compressor
2 Electrical data
Fan motor
Special remarks Capacity System
Coefficient of performance(C.O.P)
MXZ-4B80VA
Single phase
230 V, 50 Hz
1 to 4
Max. 70
Max. 25
Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
25
99
8.59
0.2
TNB220FMCH
2,100
U-V 1.41
V-W 1.41 W-U 1.41
PM8H60-UA
BLK-WHT 15.2
WHT-RED 15.2 RED-BLK 15.2
900 x 900 x 320
67
3.5
870(NEO22)
Cooling
8.0 (3.7-9.2)
—
2,530
8.59
1,955
8.39
4.09
46
560
Heating
9.4 (3.4-11.6)
—
2,630
8.48
1,930
8.28
4.87
48
590
Outdoor unit power supply
OBH554D

12
COOLING INDOOR Dry-bulb temperature27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature20.0°C
OUTDOOR Dry-bulb temperature7.0°C Wet-bulb temperature 6.0°C
1 Measured under rated operating frequency.
2 Electrical data is for only outdoor unit.
NOTE:•Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
Outdoor model
Indoor units number
Piping total length
Connecting pipe length
Height difference (Indoor ~ Outdoor)
Height difference (Indoor ~ Indoor)
Function
Capacity [Rated (Min.-Max.) Hz
Dehumidification
Outdoor air flow
Breaker capacity
Running current
Power input
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance(at 20 °C)
Model
Winding
resistance(at 20 °C)
Dimensions W x H x D
Weight
Sound level
Fan speed
Refrigerant filling
capacity(R410A)
Refrigeration oil (Model)
m
m
m
m
kW
/h
m3/h
A
A
W
%
A
A
A
W
Ω
Ω
mm
kg
dB
rpm
kg
cc
Compressor
2 Electrical data
Fan motor
Special remarks Capacity System
Coefficient of performance(C.O.P)
Outdoor unit power supply
MXZ-5B100VA
Single phase
230 V, 50 Hz
1 to 5
Max. 80
Max. 25
Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
Refer to 7 REFRIGERANT SYSTEM DIAGRAM.
25
99
12.45
0.2
TNB220FMCH
2,700
U-V 1.41
V-W 1.41 W-U 1.41
PM8H60-UA
BLK-WHT 15.2
WHT-RED 15.2 RED-BLK 15.2
900 x 900 x 320
68
4.0
870 (NEO22)
Cooling
10.0 (3.9 - 11.0)
—
3,396
12.30
2,880
12.10
3.57
51
720
Heating
12.0 (4.1 - 14.0)
—
3,558
12.45
2,835
12.25
4.23
54
750
OBH554D

13
NOISE CRITERIA CURVES
4
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
47
SPL(dB(A))
51
LINE
MXZ-3B54VA
MXZ-2B30VA
MXZ-2B52VA
MXZ-2B40VA
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
47
SPL(dB(A))
48
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
49
SPL(dB(A))
50
LINE
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
46
SPL(dB(A))
47
LINE
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OBH554D

14
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
46
SPL(dB(A))
48
LINE
MXZ-4B80VA
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
48
SPL(dB(A))
52
LINE
MXZ-3B68VA
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
48
SPL(dB(A))
52
LINE
MXZ-4B71VA
OUTDOOR UNIT
MICROPHONE
1m Test conditions
Cooling :Dry-bulb temperature 35°C Wet-bulb temperature 24°C
Heating :Dry-bulb temperature 7°C Wet-bulb temperature 6°C
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
51
SPL(dB(A))
54
LINE
MXZ-5B100VA
OBH554D

15
OUTLINES AND DIMENSIONS
5
MXZ-2B30VA
MXZ-2B40VA
MXZ-2B52VA
51 51
170.4
44
400
304 325
344.5
17.5
40
22.3
550
280
10
800
500150
302.5
1323 285
51
251.1
69
handle
Air out
2-10x21 Oval hole
Drainage hole 42
Liquid pipe : 6.35(flared)1/4
Gas pipe : 9.52(flared)3/8
Liquid pipe : 6.35(flared)1/4
Gas pipe : 9.52(flared)3/8
B unit
connection
A unit
connection
REQUIRED SPACE Basically open 100mm or more
without any obstruction in front
and on both sides of the unit.
350mm or more
200mm or more
100mm or more
100mm or more
Open two sides of left,
right, or rear side.
OBH554D

16
100
500
350350
100
500
100
100 350
200
500
Service space
More than
More than
More than
More than
More than
More than
More than More than
More than
More than
More than
1.Installation space
Note : Leave front and both sides
free of obstruction.
Note : Leave front and overhead
free of obstruction.
Note : Leave rear, overhead and
both sides free of obstruction.
2.Service space
(Bolt Pitch)
4-10 x 21 Oval hole
(Base bolt M10)
Air in
Air in
Air out
3- 33 Drain hole
31.3
13.3 20.3
171500169
63.2
360.6
16.8
288233.1
17.717.7
396
30 330
66.3
840 30
710
299
360
240
200
Indoor and outdoor
connect wiring
39 x 27 hole
27.1
23.1
45
225
84
440
Gas pipe 9.52(flared)3/8
Liquid pipe 6.35(flared)1/4
C unit connection
B unit connection
A unit connection
13
MXZ-3B54VA MXZ-3B68VA Unit: mm
OBH554D

17
100
500
350350
100
500
100
100 350
200
500
Service space
More than
More than
More than
More than
More than
More than
More than More than
More than
More than
More than
1.Installation space
Note : Leave front and both sides
free of obstruction.
Note : Leave front and overhead
free of obstruction.
Note : Leave rear, overhead and
both sides free of obstruction.
2.Service space
Air in
Air in
Air out
(Base bolt M10)
4-10 x 21 Oval hole
3- 33 Drain hole
(Bolt Pitch)
171500
360.6
20.313.3
16.8
31.3
63.2 288233.1
169
396
17.7 17.7
9.52(flared)3/8(B,C,D uni
t
Liquid pipe 6.35(flared)1/4
330 1330
66.3
Indoor and outdoor
connect wiring
39 x 27 hole
27.1
23.1
440
45
31584
299
360
710
840 30
200
240
D unit connection
C unit connection
B unit connection
A unit connection
12.7(flared)1/2(A unit)
Gas pipe
MXZ-4B71VA Unit: mm
OBH554D

18
MXZ-4B80VA MXZ-5B100VA Unit: mm
460
317
900
Air out
900
Handle
Handle
35
74
200 200500
35 250 270
355
(Bolt pitch)
387
40 27
16
16 11
24
3- 33 Drain hole
(Base bolt M10)
(Base bolt M10)
2-U Shaped notched hole
2-12 x 36 Oval hole
Air in
Air in
B
A
100
500
350350
100
500
100
100 350
200
500
Service space
More than
More than
More than
More than
More than
More than
More than More than
More than
More than
More than
32030 10
88
Gas pipe
12.7(flared) 1/2 (A unit)
9.52(flared) 3/8 (B,C,D,E (MXZ-5B100VA) unit)
6.35(flared)1/4
Liquid pipe
D unit connection
E unit connection (MXZ-5B100VA)
C unit connection
B unit connection
A unit connection
1.Installation space
Note : Leave front and both sides
free of obstruction.
Note : Leave front and overhead
free of obstruction.
Note : Leave rear, overhead and
both sides free of obstruction.
2.Service space
23
597
132 405
45
Indoor and
outdoor
connect
wiring
(35 x 53) hole
OBH554D

19
WIRING DIAGRAM
6
MXZ-2B30VA MXZ-2B40VA MXZ-2B52VA
TB3
TB2 TB1
OBH554D

20
MXZ-3B54VA
OBH554D