SERVICE MANUAL
Model name
<Indoor unit>
Model name
<Indoor unit>
Series MVZ
MVZ-A12AA4
MVZ-A18AA4
MVZ
-
A24AA4
Air-Conditioners
M-SERIES
MVZ-A12, 18, 24, 30, 36AA7
Multi-Position Air Handler
INDOOR UNIT
Contents
1. SAFETY PRECAUTION .....................................................................................................................................................2
1-1. Always observe for safety .........................................................................................................................................2
1-2. Cautions related to new refrigerant ...........................................................................................................................2
2. PART NAMES AND FUNCTIONS ......................................................................................................................................3
3. SPECIFICATION ................................................................................................................................................................4
4. FAN PERFORMANCE AND CORRECTED AIR FLOW .....................................................................................................6
MVZ-A12AA7 ...................................................................................................................................................................6
MVZ-A18AA7 ...................................................................................................................................................................7
MVZ-A24AA7 ...................................................................................................................................................................8
MVZ-A30AA7 ...................................................................................................................................................................9
MVZ-A36AA7 .................................................................................................................................................................10
MVZ-A12, 18, 24, 30, 36AA7 .........................................................................................................................................11
5. SOUND PRESSURE LEVELS .........................................................................................................................................12
5-1. Sound pressure level ..............................................................................................................................................12
5-2. NC curves ...............................................................................................................................................................12
6. OUTLINES & DIMENSIONS ............................................................................................................................................15
7. WIRING DIAGRAM ..........................................................................................................................................................17
8. REFRIGERANT SYSTEM DIAGRAM ..............................................................................................................................18
9. HEATER CONTROL .........................................................................................................................................................19
&RQWURO6SHFL¿FDWLRQV$QG)XQFWLRQ6HWWLQJ ........................................................................................................... 19
9-2. Fan control ..............................................................................................................................................................21
9-3. CN24RELAY-KIT-CM3 (Optional Parts) installation ................................................................................................22
10. HUMIDIFIER CONTROL ................................................................................................................................................24
&RQWURO6SHFL¿FDWLRQV ...........................................................................................................................................24
10-2. Installation .............................................................................................................................................................24
11.
ERV (ENERGY RECOVERY VENTILATION) CONTROL .......................................................................................................................25
&RQWURO6SHFL¿FDWLRQV ............................................................................................................................................25
12. TROUBLESHOOTING ...................................................................................................................................................26
12-1. Cautions on troubleshooting .................................................................................................................................26
12-2. Self-check function ................................................................................................................................................27
12-3. Self-diagnosis action table ....................................................................................................................................29
12-4. Troubleshooting by inferior phenomena ...............................................................................................................33
12-5. Test point diagram .................................................................................................................................................34
12-6. Trouble criterion of main parts...............................................................................................................................36
12-7. Thermistor .............................................................................................................................................................36
12-8. DC Fan motor (FAN MOTOR/INDOOR CONTROLLER BOARD) .......................................................................37
12-9. Functions of DIP switch and jumper wire ..............................................................................................................38
13. DISASSEMBLY PROCEDURE ......................................................................................................................................39
13-1. Control box ............................................................................................................................................................39
13-2. Thermistor (Return Air) ..........................................................................................................................................40
13-3. Coil Assembly........................................................................................................................................................41
13-4. Blower/Fan Assembly............................................................................................................................................43
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
Cautions for units utilising refrigerant R410A
Use new refrigerant pipes.
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.
Store the piping to be used indoors during
installation and both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
In case of using the existing pipes for R22, be careful with
the followings.
· For A36 and A42, be sure to perform replacement oper-
ation before test run.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil etc.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil etc.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil etc.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Before obtaining access to terminal, all supply
circuits must be disconnected.
1-2. CAUTIONS RELATED TO NEW REFRIGERANT
2
SAFETY PRECAUTION1
1-1. Always observe for safety
1-2. Cautions related to new refrigerant
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
3
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Tool name Specifications
1Gauge manifold · Only for R410A
· Use the existing fitting specifications. (UNF1/2)
· Use high-tension side pressure of 5.3MPa·G or over.
2Charge hose · Only for R410A
· Use pressure performance of 5.09MPa·G or over.
3 Electronic scale
4Gas leak detector · Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check · Attach on vacuum pump.
6Refrigerant charge base
7Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)
· Cylinder with syphon
8Refrigerant recovery equipment
PART NAMES AND FUNCTIONS2
• Indoor Unit
Air
inlet Air
outlet
(1)Vertical (2)Horizontal Right
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Ser vi ce Ref .
Power supply (phase, cycle, voltage)
Max. Fuse Size
Min. Circuit Ampacity A
A
kW
F.L.A
m
3
/min (CFM)
Pa (in.WG)
External finish
Heat exchanger
Fan
Fan (drive) x No.
Fan motor output
Fan mot or
Airflow (Low-Mid-High)
External static pressure
Operation control & Thermostat
Sound pressure level
(Low-Mid-High) dB (A)
Drain pipe mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
INDOOR UNIT
Weight
75Pa (0.30 in.WG)
125Pa (0.50 in.WG)
200Pa (0.80 in.WG)
1 phase, 60Hz, 208/230V
15
3.00
MVZ-A12AA7
Galvanized steel cabinet - Powder coated Slate Gray
Plate n coil
Sirocco fan
x 1
0.121
2.4
7.9-9.6-11.3 (280-340-400)
75-125-200 (0.30-0.50-0.80)
Remote controller & built-in
24-28-32
27-31-35
32-36-41
19.05 (3/4) FPT
432 (17)
548 (21-5/8)
1275 (50-1/4)
51 (113)
Ser vi ce Ref .
Power supply (phase, cycle, voltage)
Max. Fuse Size
Min. Circuit Ampacity A
A
kW
F.L.A
m
3
/min (CFM)
Pa (in.WG)
Sound pressure level
(Low-Mid-High) dB (A)
Drain pipe mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
INDOOR UNIT
Weight
75Pa (0.30 in.WG)
125Pa (0.50 in.WG)
200Pa (0.80 in.WG)
1 phase, 60Hz, 208/230V
15
3.00
MVZ-A18AA7
Galvanized Steel Cabinet - Powder coated Slate Gray
Plate n coil
Sirocco fan
x 1
0.121
2.4
11.6-14.1-16.6 (410-497-585)
75-125-200 (0.30-0.50-0.80)
Remote controller & built-in
26-30-34
28-32-36
33-37-41
19.05 (3/4) FPT
432 (17)
548 (21-5/8)
1275 (50-1/4)
51 (113)
External finish
Heat exchanger
Fan
Fan (drive) x No.
Fan motor output
Fan mot or
Airflow (Low-Mid-High)
External static pressure
Operation control & Thermostat
SPECIFICATION3
Air
inlet
Air
outlet
Air inlet
Air outlet
(3)Horizontal left (4)Down flow
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5
Ser vi ce Ref .
Power supply (phase, cycle, voltage)
Max. Fuse Size
Min. Circuit Ampacity A
A
kW
F.L.A
m3/min (CFM)
Pa (in.WG)
Sound pressure level
(Low-Mid-High) dB (A)
Drain pipe mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
INDOOR UNIT
Weight
75Pa (0.30 in.WG)
125Pa (0.50 in.WG)
200Pa (0.80 in.WG)
Ser vi ce Ref .
Power supply (phase, cycle, voltage)
Max. Fuse Size
Min. Circuit Ampacity A
A
kW
F.L.A
m3/min (CFM)
Pa (in.WG)
Sound pressure level
(Low-Mid-High) dB (A)
Drain pipe mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
INDOOR UNIT
Weight
75Pa (0.30 in.WG)
125Pa (0.50 in.WG)
200Pa (0.80 in.WG)
Ser vi ce Ref .
Power supply (phase, cycle, voltage)
Max. Fuse Size
Min. Circuit Ampacity A
A
kW
F.L.A
m3/min (CFM)
Pa (in.WG)
Sound pressure level
(Low-Mid-High) dB (A)
Drain pipe mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
INDOOR UNIT
Weight
75Pa (0.30 in.WG)
125Pa (0.50 in.WG)
200Pa (0.80 in.WG)
External finish
Heat exchanger
Fan Fan (drive) x No.
Fan motor output
Fan mot or
Airflow (Low-Mid-High)
External static pressure
Operation control & Thermostat
External finish
Heat exchanger
Fan Fan (drive) x No.
Fan motor output
Fan mot or
Airflow (Low-Mid-High)
External static pressure
Operation control & Thermostat
External finish
Heat exchanger
Fan Fan (drive) x No.
Fan motor output
Fan mot or
Airflow (Low-Mid-High)
External static pressure
Operation control & Thermostat
MVZ-A24AA7
1 phase, 60Hz, 208/230V
15
3.00
Galvanized Steel Cabinet - Powder coated Slate Gray
Plate n coil
Sirocco fan x 1
0.121
2.4
14.6-17.7-20.8 (515-625-735)
75-125-200 (0.30-0.50-0.80)
Remote controller & built-in
28-33-36
30-34-38
34-38-42
19.05 (3/4) FPT
432 (17)
548 (21-5/8)
1275 (50-1/4)
51 (113)
MVZ-A30AA7
1 phase, 60Hz, 208/230V
15
4.13
Galvanized Steel Cabinet - Powder coated Slate Gray
Plate n coil
Sirocco fan x 1
0.244
3.3
17.3-21.1-24.8 (613-744-875)
75-125-200 (0.30-0.50-0.80)
Remote controller & built-in
30-34-38
32-36-40
35-39-43
19.05 (3/4) FPT
534 (21)
548 (21-5/8)
1378 (54-1/4)
64 (141)
MVZ-A36AA7
1 phase, 60Hz, 208/230V
15
4.13
Galvanized Steel Cabinet - Powder coated Slate Gray
Plat e fin coil
Sirocco fan 1
0.244
3.3
21.7-26.4-31.0 (767-931-1095)
75-125-200 (0.30-0.50-0.80)
Remote controller & built-in
33-37-41
35-39-43
37-41-45
19.05 (3/4) FPT
534 (21)
548 (21-5/8)
1378 (54-1/4)
64 (141)
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6
0
[0]
25
[0.10]
75
[0.30]
50
[0.20]
100
[0.40]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
7
[247]
10
[353]
14
[494]
7
[247]
10
[353]
14
[494]
7
[247]
10
[353]
14
[494]
7
[247]
10
[353]
14
[494]
50
[0.20]
75
[0.30]
125
[0.50]
100
[0.40]
150
[0.60]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
7
[247]
10
[353]
14
[494]
7
[247]
10
[353]
14
[494]
75
[0.30]
100
[0.40]
150
[0.60]
125
[0.50]
175
[0.70]
200
[0.80]
225
[0.90]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
0
[0]
25
[0.10]
75
[0.30]
50
[0.20]
100
[0.40]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
25
[0.10]
50
[0.20]
100
[0.40]
75
[0.30]
125
[0.50]
150
[0.60]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
75
[0.30]
100
[0.40]
150
[0.60]
125
[0.50]
175
[0.70]
200
[0.80]
225
[0.90]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
Low Low
Low
Middle
Middle
Middle
High High
High
Low
Low Low
Middle
Middle Middle
High
High High
MVZ-A12AA4
• Vertical, Horizontal Right, Horizontal Left • Downflow
External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz
External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz
External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz
External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz
External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz
External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz
FAN PERFORMANCE AND CORRECTED AIR FLOW4
MVZ-A12AA7
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
7
0
[0]
25
[0.10]
75
[0.30]
50
[0.20]
100
[0.40]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
10
[353]
15
[530]
20
[706]
10
[353]
15
[530]
20
[706]
10
[353]
15
[530]
20
[706]
10
[353]
15
[530]
20
[706]
Airflow rate (m3/min)[cfm]
10
[353]
15
[530]
20
[706]
10
[353]
15
[530]
20
[706]
50
[0.20]
75
[0.30]
125
[0.50]
100
[0.40]
150
[0.60]
Static pressure (Pa)[in.WG]
75
[0.30]
100
[0.40]
150
[0.60]
125
[0.50]
175
[0.70]
200
[0.80]
225
[0.90]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
0
[0]
25
[0.10]
75
[0.30]
50
[0.20]
100
[0.40]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
25
[0.10]
50
[0.20]
100
[0.40]
75
[0.30]
125
[0.50]
150
[0.60]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
75
[0.30]
100
[0.40]
150
[0.60]
125
[0.50]
175
[0.70]
200
[0.80]
225
[0.90]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
Low
Low
Low
Middle
Middle
Middle
High
High
High
Low
Low
Low
Middle
Middle Middle
High
High High
MVZ-A18AA4
• Vertical, Horizontal Right, Horizontal Left • Downflow
External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz
External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz
External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz
External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz
External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz
External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz
MVZ-A18AA7
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
8
0
[0]
25
[0.10]
75
[0.30]
50
[0.20]
100
[0.40]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
13
[459]
15
[530]
24
[847]
20
[706]
13
[459]
15
[530]
24
[847]
20
[706]
13
[459]
15
[530]
24
[847]
20
[706]
13
[459]
15
[530]
22
[777]
20
[706]
Airflow rate (m3/min)[cfm]
13
[459]
15
[530]
24
[847]
20
[706]
50
[0.20]
75
[0.30]
125
[0.50]
100
[0.40]
150
[0.60]
Static pressure (Pa)[in.WG]
13
[459]
15
[530]
22
[777]
20
[706]
75
[0.30]
100
[0.40]
150
[0.60]
125
[0.50]
175
[0.70]
200
[0.80]
225
[0.90]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
0
[0]
25
[0.10]
75
[0.30]
50
[0.20]
100
[0.40]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
25
[0.10]
50
[0.20]
100
[0.40]
75
[0.30]
125
[0.50]
150
[0.60]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
75
[0.30]
100
[0.40]
150
[0.60]
125
[0.50]
175
[0.70]
200
[0.80]
225
[0.90]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
Low
Low
Low
Middle Middle
Middle
High High
High
Low
Low Low
Middle
Middle Middle
High
High High
MVZ-A24AA4
• Vertical, Horizontal Right, Horizontal Left • Downflow
External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz
External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz
External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz
External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz
External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz
External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz
MVZ-A24AA7
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
9
0
[0]
25
[0.10]
75
[0.30]
50
[0.20]
100
[0.40]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
15
[530]
20
[706]
29
[1024]
25
[883]
15
[530]
20
[706]
29
[1024]
25
[883]
15
[530]
20
[706]
28
[989]
25
[883]
15
[530]
20
[706]
27
[953]
25
[883]
15
[530]
20
[706]
29
[1024]
25
[883]
15
[530]
20
[706]
29
[1024]
25
[883]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
75
[0.30]
100
[0.40]
150
[0.60]
125
[0.50]
175
[0.70]
200
[0.80]
225
[0.90]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
0
[0]
25
[0.10]
75
[0.30]
50
[0.20]
100
[0.40]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
25
[0.10]
50
[0.20]
100
[0.40]
75
[0.30]
125
[0.50]
150
[0.60]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
25
[0.10]
50
[0.20]
100
[0.40]
75
[0.30]
125
[0.50]
150
[0.60]
75
[0.30]
100
[0.40]
150
[0.60]
125
[0.50]
175
[0.70]
200
[0.80]
225
[0.90]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
Low Low
Low
Middle
Middle
Middle
High
High
High
Low
Low Low
Middle
Middle
Middle
High
High
High
MVZ-A30AA4
• Vertical, Horizontal Right, Horizontal Left • Downflow
External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz
External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz
External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz
External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz
External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz
External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz
MVZ-A30AA7
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
10
0
[0]
25
[0.10]
75
[0.30]
50
[0.20]
100
[0.40]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
19
[671]
25
[883]
20
[706]
33
[1165]
30
[1059]
19
[671]
25
[883]
20
[706]
32
[1130]
30
[1059]
19
[671]
25
[883]
20
[706]
32
[1130]
30
[1059]
Airflow rate (m3/min)[cfm]
19
[671]
25
[883]
20
[706]
32
[1130]
30
[1059]
19
[671]
25
[883]
20
[706]
32
[1130]
30
[1059]
50
[0.20]
75
[0.30]
125
[0.50]
100
[0.40]
150
[0.60]
Static pressure (Pa)[in.WG]
75
[0.30]
100
[0.40]
150
[0.60]
125
[0.50]
175
[0.70]
200
[0.80]
225
[0.90]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
25
[0.10]
50
[0.20]
100
[0.40]
75
[0.30]
125
[0.50]
175
[0.70]
150
[0.60]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
19
[671]
25
[883]
20
[706]
32
[1130]
30
[1059]
0
[0]
25
[0.10]
75
[0.30]
50
[0.20]
100
[0.40]
125
[0.50]
50
[0.20]
75
[0.30]
125
[0.50]
100
[0.40]
150
[0.60]
175
[0.70]
200
[0.80]
Airflow rate (m3/min)[cfm]
Static pressure (Pa)[in.WG]
Low
Low
Low
Middle
Middle
Middle
High
High
High
Low
Low Low
Middle
Middle Middle
High
High
High
MVZ-A36AA4
• Vertical, Horizontal Right, Horizontal Left • Downflow
External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz
External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz
External static pressure 0.60 [in.WG] (150Pa) 208/230V 60Hz
External static pressure 0.30 [in.WG] (75Pa) 208/230V 60Hz
External static pressure 0.50 [in.WG] (125Pa) 208/230V 60Hz
External static pressure 0.80 [in.WG] (200Pa) 208/230V 60Hz
MVZ-A36AA7
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
11
Airflow rate (m3/min)[cfm]
External static pressure (Pa)[in.WG]
0
[0]
10
[353]
20
[706]
30
[1059]
40
[1412]
50
[1766]
MVZ-A12, 18, 24, 30, 36AA4
0
[0]
5
[0.020]
10
[0.040]
15
[0.060]
20
[0.080]
25
[0.100]
Power source:208/230V 60Hz
A
ir filter
A12,18,24A12,18,24
A30,36
A30,36
MVZ-A12, 18, 24, 30, 36AA7
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
12
SOUND PRESSURE LEVELS5
5-1. Sound pressure level
Multi-Position
5-2. NC curves
MVZ-A12AA7 MVZ-A18AA7
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
13
MVZ-A24AA7 MVZ-A30AA7
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
14
MVZ-A36AA7
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
15
6OUTLINES & DIMENSIONS
INDOOR UNIT
MVZ-A12, 18, 24, 30, 36AA7
Control box
Air filter
Air outlet
Air inlet
(Duct)
(Gravity drain)
Secondary drain pipe
(Emergency draining)
ø19.05(3/4) 3/4"FPT
(Gravity drain)
(Horizontal left)
(Horizontal Right)
Secondary drain pipe
(Emergency draining)
Primary drain pipe
(Gravity drain)
ø19.05(3/4) 3/4"FPT
Secondary drain pipe Primary drain pipe
ø19.05(3/4) 3/4"FPT
Primary drain pipe
ø19.05(3/4) 3/4"FPT
ø19.05(3/4) 3/4"FPT
(Emergency draining)
ø19.05(3/4) 3/4"FPT
Refrigerant piping
flare connection(gas)
Refrigerant piping
flare connection(liquid)
Terminal block
(Indoor / Outdoor unit connection)
Terminal block
(Remote controller transmission)
2-ø4.6 Burring Holes
for electric heat installation
ø26 Knockout Hole
(Remote controller transmission)
ø26 Knockout Hole
ø26 Knockout Hole
ø26 Knockout Hole
(Indoor / Outdoor unit
connection)
(Indoor / Outdoor
unit connection)
(Remote controller
transmission)
Unit:mm(in.)
Model A B C D E F G H J Gas pipe Liquid pipe
MVZ-A12AA7 432
(17) 376
(14-13/16)
281
(11-1/8)
224
(8-7/8)
1275
(50-1/4)
680
(26-13/16)
823
(32-7/16)
735.5
(29) 360
(14-3/16)
ø
12.7
(1/2)
ø
6.35
(1/4)
MVZ-A18AA7
MVZ-A24AA7
ø
15.88
(5/8)
ø
9.52
(3/8)
MVZ-A30AA7 534
(21) 477
(18-13/16)
382.6
(15-1/8)
266.5
(10-1/2)
1378
(54-1/4)
737
(29-1/16)
953.5
(37-9/16)
792
(31-3/16)
461
(18-3/16)
MVZ-A36AA7
Top
Top
view
Front
Bottom
Bottom
view
view
Left side
view
Right side
view
Model
Nominal Filter Size Duct Connection
MVZ-A12AA7 508X406.4X25.4
(20X16X1) 376X402
(14-13/16X15-7/8)
MVZ-A18AA7
MVZ-A24AA7
MVZ-A30AA7 508X508X25.4
(20X20X1) 477X402
(18-13/16X15-7/8)
MVZ-A36AA7
J
77.8(3-1/8)
66(2-5/8)
525.5(20-3/4)
36.8(1-1/2)
50.8(2)
470(18-9/16)
H55(2-3/16)
G70(2-13/16)
43(1-3/4) 8(3/8)
92(3-5/8) 30(1-3/16)
8(3/8)
F
55(2-3/16)
43(1-3/4)
8(3/8)
D
55(2-3/16)
548(21-5/8)
117.4 (4-5/8)
402(15-7/8)
B(Duct) 28.8(1-3/16)
76(3)
C
E
A
24(15/16)
13.2(9/16)
Note 1.Keep the service space for maintenance at the front.
1
3
3
2
1 2
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
16
609.6(24)
Width of Unit
609.6(24)
Length of Unit
Clearance Area
Vertical Installation Horizontal Installation
Unit:mm(in.)
609.6(24)
609.6(24)
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
TO OUTDOOR UNIT
S3
S1
S2
RFI
11
2
CNXB1
CN2A
U
(BLUE)
TB15
CNXA2
t˚
TH2 TH5
TB4
CN2L
(BLUE)
(BLUE)
CN22
t˚
TH1
CN3C
2
LED3
(RED)
(RED)
(BLUE)
CNXA1 CNMFCNXC1
ON
OFF
LED2
LED1
DC280-340V
RECTIFIER CIRCUIT
(BLACK)
CN44
(RED)
ZNR01
CND
ZNR02
DSA
F01
CNXC2
CNXB2
CN51
CN41
CN105
CN90
CN20
SWE
X10
(RED)
U
FAN MOTOR
P. B .
I.B.
INSIDE SECTION OF CONTROL BOX
4
4123
3
2
4
51
2
2
1
3
4
1
5
3
1
2
1
153
2
1
4
3
1
2
12 321 17654
3~
MS
CNF
(GREEN)
CN24-1
(YELLOW)
CN24-2
(BLUE)
CN2C
(BLACK)
CNER
(RED) CN25
W.B.
1
2
3
4
5
6
7
8
9
t˚
OPTIONAL PARTS
TRANSMISSION
WIRES DC 12V
SW2
SW1
REMOTE CONTROLLER
R.B.
SW5
TB6
OPTIONAL PARTS
4
3
1
2
CN4F
CN32
4
5
3
2
1
ON
12345
SW2 SW2 SW2
ON
5
5
4
4
3
3
2
2
1
1
SW1
54321
SW1
ON
54321
SW1
ON
54321
54321687
SW5
ON
54321687
ON
54321687
SW5 SW5
Note1.Since the outdoor side electric wiring may change
be sure
to check the outdoor unit electric wiring for
servicing.
2.Indoor and outdoor connecting wires are made with
polarities,make wiring matching terminal numbers
(S1,S2,S3).
3.Symbols used in wiring diagram above are as
follows.
:CONNECTOR
:TERMINAL
(HEAVY DOTTED LINE):FIELD WIRING
(THIN DOTTED LINE):OPTIONAL PARTS
4.Use copper supply wire.
UTILISER DES FILS D'ALIMENTATION EN CUIVRE.
SWITCH (FOR MODE SELECTION)
SW5
CONNECTOR (HEATER CONTROL 1ST)
CN2A
CONNECTOR (RADIO FREQUENCY INTERFACE)
INDOOR CONTROLLER BOARD
I.B.
CN105
SYMBOL EXPLANATION
CONNECTOR (WIRELESS)
FUSE AC250V 6.3A
CONNECTOR (CENTRALLY CONTROL)
CONNECTOR (HA TERMINAL-A)
LED(REMOTE CONTROLLER SUPPLY)
INDOOR CONTROLLER BOARD
CONNECTOR (REMOTE SWITCH)
LED(TRANSMISSION INDOOR-OUTDOOR)
F01
CN41
CN51
CN2L
NAME
SW1
SW2
CN32
I.B.
SYMBOL
SYMBOL NAME
SWE
TH1 INTAKE AIR TEMP. THERMISTOR
TH2 PIPE TEMP
.
THERMISTOR/LIQUID
TH5 COND
.
/EVA
.
TEMP
.
THERMISTOR
LED1
LED2
LED3
CONNECTOR (LOSSNAY)
LED(POWER SUPPLY)
NAMESYMBOL
TERMINAL BLOCK
(REMOTE CONTROLLER TRANSMISSION LINE)
TERMINAL BLOCK
(INDOOR/OUTDOOR CONNECTING LINE)
TB4
TB15
P. B .
POWER SUPPLY BOARD
VARISTOR
ZNR01,02
CN90
SWITCH (FOR MODEL SELECTION)
SWITCH (FOR CAPACITY CODE)
CONNECTOR (EMERGENCY OPERATION)
RADIO FREQUENCY INTERFACE FOR RF THERMOSTAT
RFI
TERMINAL BLOCK
(REMOTE CONTROLLER TRANSMISSION LINE)
TB6
WIRED REMOTE CONTROLLER BOARD
R.B.
SW2
SWITCH(COOLING ON/OFF)
SWITCH(HEATING ON/OFF)
SW1
IR WIRELESS REMOTE CONTROLLER BOARD
LED(RUN INDICATOR)
BUZZER
OPTIONAL PARTS
LED1
BZ1
RECEIVING UNIT
RU
W.B.
CN24-1
CN24-2
CONNECTOR (HEATER CONTROL 2ND)
CONNECTOR (0-10V ANALOG INPUT)
CN25
CONNECTOR (HUMIDITY OUTPUT)
CN2C
CONNECTOR (ERV OUTPUT)
CONNECTOR (ERV INPUT)
CNER
CNF
CONNECTOR (HUMIDITY INPUT)
ON
SW2 SW2
ON
ON
5
5
4
4
3
3
2
2
1
1
SW1
ON
54321
MODEL
MVZ-A12AA4
MVZ-A18AA4
MVZ-A24AA4
MVZ-A30AA4
MVZ-A36AA4
SW1
ON
54321
ON
ON
54321687
SW5
ON
54321687
ON
SW5
SWITCH
DSA
X10
ARRESTOR
AUX.RELAY
RU
BZ1
CN1
123456789
SW2SW1
LED1
17
7WIRING DIAGRAM
MVZ-A12, 18, 24, 30, 36AA7
ON
12345
SW2 SW2 SW2
ON
5
5
4
4
3
3
2
2
1
1
SW1
54321
SW1
ON
54321
SW1
ON
54321
54321687
SW5
ON
54321687
ON
54321687
SW5 SW5
ON
SW2 SW2
ON
ON
5
5
4
4
3
3
2
2
1
1
SW1
ON
54321
MODEL
MVZ-A12AA7
MVZ
-
A
18
AA4
MVZ-A18AA7
M
VZ-A24AA
4
MVZ-A24AA7
MVZ
-
A
30
AA4
MVZ-A30AA7
MVZ
-
A
36
AA4
MVZ-A36AA7
SW1
ON
54321
ON
ON
54321687
SW5
ON
54321687
ON
SW5
SWITCH
SWITCH (FOR MODE SELECTION)
SW5
CONNECTOR (HEATER CONTROL 1ST)
CN2A
CONNECTOR (RADIO FREQUENCY INTERFACE)
INDOOR CONTROLLER BOARD
I.B.
CN105
CONNECTOR (WIRELESS)
FUSE AC250V 6.3A
CONNECTOR (CENTRALLY CONTROL)
CONNECTOR (HA TERMINAL-A)
LED(REMOTE CONTROLLER SUPPLY)
INDOOR CONTROLLER BOARD
CONNECTOR (REMOTE SWITCH)
LED(TRANSMISSION INDOOR-OUTDOOR)
F01
CN41
CN51
CN2L
NAME
SW1
SW2
CN32
I.B.
SYMBOL
SYMBOL NAME
SWE
TH1 INTAKE AIR TEMP. THERMISTOR
TH2 PIPE TEMP. THERMISTOR/LIQUID
TH5 COND./EVA.TEMP. THERMISTOR
LED1
LED2
LED3
CONNECTOR (LOSSNAY)
LED(POWER SUPPLY)
NAMESYMBOL
TERMINAL BLOCK
(REMOTE CONTROLLER TRANSMISSION LINE)
TERMINAL BLOCK
(INDOOR/OUTDOOR CONNECTING LINE)
TB4
TB15
P. B . POWER SUPPLY BOARD
VARISTOR
ZNR01,02
CN90
SWITCH (FOR MODEL SELECTION)
SWITCH (FOR CAPACITY CODE)
CONNECTOR (EMERGENCY OPERATION)
RADIO FREQUENCY INTERFACE FOR RF THERMOSTAT
RFI
TERMINAL BLOCK
(REMOTE CONTROLLER TRANSMISSION LINE)
TB6
WIRED REMOTE CONTROLLER BOARD
R.B.
SW2 SWITCH(COOLING ON/OFF)
SWITCH(HEATING ON/OFF)
SW1
IR WIRELESS REMOTE CONTROLLER BOARD
LED(RUN INDICATOR)
BUZZER
OPTIONAL PARTS
LED1
BZ1
RECEIVING UNIT
RU
W.B.
CN24-1
CN24-2
CONNECTOR (HEATER CONTROL 2ND)
CONNECTOR (0-10V ANALOG INPUT)
CN25 CONNECTOR (HUMIDITY OUTPUT)
CN2C CONNECTOR (ERV OUTPUT)
CONNECTOR (ERV INPUT)
CNER
CNF CONNECTOR (HUMIDITY INPUT)
DSA
X10
ARRESTOR
AUX.RELAY
6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH © 2016 Mitsubishi Electric US, Inc.
18
8REFRIGERANT SYSTEM DIAGRAM
MVZ-A12, 18, 24, 30, 36AA7
Thermistor TH2
Pipe temperature(Liquid)
Distributor
with strainer (#50)
Thermistor TH5
(Cond./ Eva.temperature)
Thermistor TH1
(Room temperature)
Refrigerant flow in cooling
Refrigerant flow in heating
Strainer (#50)
Strainer (#50)
Heat exchanger
Refrigerant GAS pipe connection
(Flare)
Refrigerant LIQUID pipe connection
(Flare)
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