Mitsubishi Electric Mr. Slim MS09TW User manual
SERVICE MANUAL
SPLIT-TYPE AIR CONDITIONERS
CONTENTS
1. FEATURES ············································OB274-2
2.TECHNICAL CHANGES························OB274-3
3. PART NAMES AND FUNCTIONS ········OB274-4
4. SPECIFICATIONS··································OB274-7
5. DATA ····················································OB274-10
6. OUTLINES AND DIMENSIONS ··········OB274-16
7.WIRING DIAGRAM ······························OB274-18
8. REFRIGERANT SYSTEM DIAGRAM··OB274-21
9. MICROPROCESSOR CONTROL········OB274-23
10. SERVICE FUNCTIONS ························OB274-31
11.TROUBLESHOOTING··························OB274-33
12. DISASSEMBLY INSTRUCTIONS ········OB274-42
13. PARTS LIST ········································OB274-51
14. OPTIONAL PARTS ······························OB274-57
Wireless type
Models
MS09TW(W) · MU09TW
MS12TN (W) · MU12TN
MS15TN (W) · MU15TN
MS17TN (W) · MU17TN
No. OB274
The Slim Line.
From Mitsubishi Electric.
L
I
S
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E
D
R
L
I
S
T
E
D
R
C
MS12TN
MS15TN
MS17TN
INDOOR UNIT
MU15TN
MU17TN
OUTDOOR UNIT
Remote
controller
TM
FEATURES
OB274-2
1
MS12TN
MS15TN
MS17TN
MS09TW MU09TW
MU12TN
MU15TN
MU17TN
LCD wireless
remote controller
Models Cooling capacity SEER
MS09TW 8,500Btu/h 10.2
MS12TN 12,300/12,600Btu/h 11.3/11.3
MS15TN 14,300/14,600Btu/h 10.5/10.5
MS17TN 15,900/16,100Btu/h 10.2/10.2
“I FEEL CONTROL” IN OUR LCD WIRELESS REMOTE CONTROLLER WITH ON/OFF PROGRAM TIMER
Mitsubishi Electric’s new wireless remote controller incorporates a number of advanced features that provide even greater con-
trol and ease-to-use. It has a liquid crystal display which indicates such information as mode, fan speed and temperature
selected as well as the programmed ON/OFF timer. It is also equipped with “I Feel Control”, a unique Mitsubishi Electric fea-
ture that allows the user to adjust the temperature to exactly the level he or she wants simply by tapping the button that
describes present conditions : “Too Cool” or “Too Warm”. The optimum temperature set this way is then memorized for immedi-
ate recall whenever the air conditioner is used again.
Select desired air flow direction.
REMOTE-CONTROL OPERATION MODE
Using the remote controller, you can select from five airflow set-
tings to match room layout and the location of people. Also, you
can set the vane to swing automatically.
SWING
AUTO-RESTART FUNCTION
The auto restart function restarts the equipment automatically
when power is restored following an outage. Operation resumes in
the mode in which the equipment was running just before the out-
age.
HIGH PERFORMANCE ROTARY COMPRESSOR
The advanced design of Mitsubishi Electric’s powerful and energy
efficient rotary compressor results in lower operating costs and
longer service life.
OB274-3
TECHNICAL CHANGES
2
MS09NW2 ➔ MS09TW
1. Indoor unit has changed
2. Remote controller has changed.
MS12NN2 ➔ MS12TN
1. Remote controller has changed.
2. Union size of connect pipe for gas has changed.
MS15NN2 ➔ MS15TN
MS17NN2 ➔ MS17TN
1. Remote controller has changed.
MU09NW2 ➔ MU09TW
1. Outdoor unit has changed.
MU12NN2 ➔ MU12TN
1. Outdoor unit has changed.
MU15NN2 ➔ MU15TN
MU17NN2 ➔ MU17TN
1. Only model name has changed.
PART NAMES AND FUNCTIONS
OB274-4
3
INDOOR UNIT
MS09TW
Operation section
Emergency operation switch
Horizontal vane
Air filter
Deodorizing filter(option)
(gray sponge type)
Vertical vanes
Air inlet
Grille
Remote control
receiving section
Remote controller
Air cleaning filter(option)
(white bellows type)
Front panel
Emergency operation switch Operation indicator lamp
Receiving section
(When the front panel is opened)
MS09TW MS09TW
MS12TN
MS15TN
MS17TN
MS12TN
MS15TN
MS17TN
MS12TN
MS15TN
MS17TN
Installation plate
Installation plate fixing screw 4 x 25 mm(0.16 x 0.98 in.)
Remote controller mounting hardware
Fixing screw for 33.5 x 16 mm(0.14 x 0.63 in.) (Black)
Battery (AAA) for remote controller
Wireless remote controller
Felt tape (Used for left or left-rear piping)
1
5
1
2
2
1
1
1
2
3
4
5
6
7
MS12TN
MS15TN
MS17TN
MS09TW
1
6
1
2
2
1
1
ACCESSORIES
OB274-5
Air inlet
(back and side)
Air outlet
Air inlet
Piping
Drain hose
Air outlet
Drain outlet
(back and side)
OUTDOOR UNIT
MU15TN
MU17TN
MU09TW
MU12TN
OB274-6
MS09TW
MS12TN
MS15TN
MS17TN
REMOTE CONTROLLER
ON/OFF
TOO
COOL
PM
AM
TOO
WARM
ON/OFF
FAN
TOO
WARM TOO
COOL
VANE
MODE
STOP
START
HR.
MIN.
I FEEL
COOL
DRY
PM
CLOCK
AM
RESET CLOCK
FAN
Open the front lid.
Signal transmitting section
Operation display section
OPERATE /STOP
(ON /OFF)button
TEMPERATURE buttons
OPERATION SELECT button
FAN SPEED CONTROL button OFF-TIMER button
HR. button
MIN. button
(TIME SET button)
ON-TIMER button
RESET button VANE CONTROL button
CLOCK SET button
OB274-7
4
Notes :Test conditions are based on ARI 210/240
❈1 : Rating conditions (cooling) — Indoor : 80-FDB, 67-FWB, Outdoor : 95-FDB, (75-FWB)
❈2 : Rating conditions (cooling) — Indoor : 80-FDB, 67-FWB, Outdoor : 82-FDB, 65-FWB
Operating Range
Item Model
Cooling capacity
Power consumption
EER [SEER]
INDOOR UNIT MODEL
External finish
Power supply
Max. fuse size (time delay)/ Disconnect switch
Min. ampacity
Fan motor
Airflow Low—Med.—High
Moisture removal
Sound level Low-Med.-High
Cond. drain connection O.D.
Dimensions
Weight
OUTDOOR UNIT MODEL
External finish
Power supply
Max. fuse size (time delay)
Min. ampacity
Fan motor
Compressor
Refrigerant control
Sound level
Dimensions
Weight
REMOTE CONTROLLER
Control voltage (by built-in transformer)
REFRIGERANT PIPING
Pipe size
(Min. wall thickness)
Connection method
Between the indoor
& outdoor units
Refrigerant charge (R22)
Refrigerant oil (Model)
FAN Dry
COOL Dry(Wet)
W
D
H
Model
Winding resistance (at 68˚F)"
W
D
H
Liquid
Gas
Indoor
Outdoor
Height difference
Piping length
Btu/h
W
V, phase, Hz
A
A
F.L.A
CFM
CFM
pt./h
dB(A)
in.
in.
in.
in.
lb.
V, phase, Hz
A
A
F.L.A
R.L.A
L.R.A
dB(A)
in.
in.
in.
lb.
in.
in.
ft.
ft.
oz.
8,500
840
10.1 [10.2]
MS09TW
0.5
0.37
191-237-289
166(138)-219(184)-272(226)
2.3
26-31-36
33-1/2
7-1/2
10-15/16
20
MU09TW
115, 1, 60
11
0.60
RH130WGJT
C-R 0.85 C-S 1.21
7.8
41.0
46
30-23/32
10-1/32
21-1/4
71
3/8 (0.0285)
1 Ib. 11 oz.
9.3 (MS56)
White
115, 1, 60
15
5/8
Munsell 5Y7/1
15
Capillary tube
Wireless type
12V DC
Not supplied (optional parts)
1/4 (0.0265)
Flared
Flared
Max. 25
Max. 49
12,300/12,600
1,100/1,130
11.2/11.2 [11.3/11.3]
MS12TN
0.6
0.43
360-395-452
360(314)-395(342)-452(392)
3.2
36-39-42
39-15/16
7-1/2
12-5/8
31
MU12TN
208/230, 1, 60
12
0.42
RH167NHDT
C-R 2.16 C-S 3.11
9.0
29.0
49
30-3/4
10-1/16
21-1/4
84
1/2 (0.0285)
2 Ib. 9 oz.
16.1 (MS56)
MS09TW MS12TN
❈1
❈1
❈1❈2
Cooling
Maximum
Minimum
Indoor intake air temperature
95-FDB, 71-FWB
67-FDB, 57-FWB
Outdoor intake air temperature
115-FDB
67-FDB
SPECIFICATIONS
OB274-8
Item Model
Cooling capacity
Power consumption
EER [SEER]
INDOOR UNIT MODEL
External finish
Power supply
Max. fuse size (time delay)/Disconnect switch
Min. ampacity
Fan motor
Airflow Low—Med.—High
Moisture removal
Sound level Low-Med.-High
Cond. drain connection O.D.
Dimensions
Weight
OUTDOOR UNIT
External finish
Power supply
Max. fuse size (time delay)
Min. ampacity
Fan motor
Compressor
Refrigerant control
Sound level
Dimensions
Weight
REMOTE CONTROLLER
Control voltage (by built-in transformer)
REFRIGERANT PIPING
Pipe size
(Min. wall thickness)
Connection method
Between the indoor
& outdoor units
Refrigerant charge (R22)
Refrigerant oil (Model)
Dry
Wet
W
D
H
Model
Winding resistance (at 68˚F)"
W
D
H
Liquid
Gas
Indoor
Outdoor
Height difference
Piping length
Btu/h
W
V, phase, Hz
A
A
F.L.A
CFM
CFM
pt./h
dB(A)
in.
in.
in.
in.
lb.
V, phase, Hz
A
A
F.L.A
R.L.A
L.R.A
dB(A)
in.
in.
in.
lb.
in.
in.
ft.
ft.
oz.
14,300/14,600
1,370/1,400
10.4/10.4 (10.5/10.5)
MS15TN
0.6
0.43
360-395-452
293-321-367
4.7
36-39-42
MU15TN
14
RH207NHDT
C-R 1.68 C-S 2.78
10.0
35.0
52
92
2 Ib. 14 oz.
White
115, 1, 60
15
5/8
39-15/16
7-1/2
12-5/8
31
Munsell 5Y7/1
208/230, 1, 60
20
0.52
Capillary tube
33-7/16
11-7/16
23-13/16
Wireless type
12V DC
Not supplied (optional parts)
1/4 (0.0265)
5/8 (0.0315)
Flared
Flared
Max. 25
Max. 49
16.1 (MS56)
15,900/16,100
1,570/1,600
10.1/10.1 (10.2/10.2)
MS17TN
0.7
0.51
406-441-491
346-374-417
5.1
40-43-45
MU17TN
15
RH231NHDT
C-R 1.65 C-S 2.67
11.0
38.0
52
97
3 Ib.
MS15TN MS17TN
❈1
❈1
❈1❈2
Cooling
Maximum
Minimum
Indoor intake air temperature
95-FDB, 71-FWB
67-FDB, 57-FWB
Outdoor intake air temperature
115-FDB
67-FDB
Notes :Test conditions are based on ARI 210/240
❈1 : Rating conditions (cooling) — Indoor : 80-FDB, 67-FWB, Outdoor : 95-FDB, (75-FWB)
❈2 : Rating conditions (cooling) — Indoor : 80-FDB, 67-FWB, Outdoor : 82-FDB, 65-FWB
Operating Range
OB274-9
wHeight difference
should be within
25ft regardless of
which unit, indoor
or outdoor
position is high.
wMax. Height
difference 25ft Additional Piping
Max. length
A
Indoor
unit
Outdoor unit
MAX. HEIGHT DIFFERENCE
Outside
diameter Minimum
Wall
thickness Outside
diameter Minimum
Wall
thickness
Model Additional piping
Max. length : ft.
A
49
GasPiping size : in. Length of connecting pipe : in.
Liquid Indoor unit Outdoor unit
Gas :
Liquid :
0
0
Gas :
Liquid :
16-15/16
19-11/16
[ 3/8
[ 1/2
[ 5/8
[ 1/4
0.0285
0.0315
0.0265
MS09TW
MU09TW
MS12TN
MU12TN
MS15TN
MU15TN
MS17TN
MU17TN
MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE
OB274-10
DATA
5
Model
Indoor air Outdoor intake air DB temperature (˚F)
71
67
63
71
67
63
71
67
63
TC
15.1
14.3
13.4
17.5
16.6
15.6
19.5
18.4
17.3
SHC
8.7
10.1
11.3
9.1
10.8
12.2
10.1
12.0
13.6
TPC
0.98
0.92
0.88
1.22
1.15
1.10
1.40
1.32
1.26
TC
14.1
13.3
12.4
16.4
15.4
14.4
18.2
17.2
16.1
SHC
8.1
9.4
10.5
8.5
10.0
11.3
9.4
11.2
12.6
TPC
1.07
1.02
0.97
1.34
1.27
1.21
1.53
1.45
1.39
TC
13.2
12.3
11.6
15.4
14.3
13.4
17.1
15.9
14.9
SHC
7.6
8.7
9.8
7.9
9.3
10.5
8.8
10.3
11.7
TPC
1.16
1.10
1.05
1.44
1.37
1.31
1.65
1.57
1.50
TC
12.3
11.4
10.5
14.3
13.3
12.2
15.9
14.8
13.6
SHC
7.1
8.1
8.9
7.4
8.6
9.6
8.2
9.6
10.6
TPC
1.22
1.17
1.12
1.51
1.45
1.40
1.73
1.66
1.60
TC
11.3
10.5
9.6
13.2
12.2
11.2
14.6
13.6
12.4
SHC
6.5
7.5
8.1
6.8
7.9
8.7
7.6
8.8
9.7
TPC
1.27
1.22
1.17
1.58
1.52
1.45
1.81
1.74
1.66
IWB
(˚F)
75 85 95 105 115
MS12TN
MS15TN
MS17TN
Model Refrigerant piping length (one way)
MS09TW
MS12TN
MS15TN
MS17TN
1.0
25ft (std)
0.954
40ft
0.927
49ft
MS09TW MS12TN MS15TN MS17TN MU09TW MU12TN MU15TN MU17TN
Model
Indoor air Outdoor intake air DB temperature (˚F)
MS09TW
71
67
63
TC
10.4
9.9
9.3
SHC
5.9
6.9
7.7
TPC
0.75
0.71
0.67
TC
9.7
9.2
8.6
SHC
5.5
6.4
7.2
TPC
0.82
0.78
0.74
TC
9.1
8.5
8.0
SHC
5.2
6.0
6.7
TPC
0.88
0.84
0.80
TC
8.5
7.9
7.3
SHC
4.8
5.5
6.1
TPC
0.93
0.89
0.86
TC
7.8
7.3
6.6
SHC
4.4
5.1
5.5
TPC
0.97
0.93
0.89
IWB
(˚F)
75 85 95 105 115
(208V)
(115V)
Model
Indoor air Outdoor intake air DB temperature (˚F)
71
67
63
71
67
63
71
67
63
TC
15.4
14.6
13.7
17.9
16.9
15.9
19.7
18.7
17.5
SHC
8.9
10.4
11.6
9.2
11.0
12.5
10.2
12.1
13.7
TPC
1.01
0.95
0.90
1.25
1.18
1.12
1.42
1.34
1.28
TC
14.4
13.6
12.7
16.7
15.8
14.7
18.4
17.4
16.3
SHC
8.3
9.7
10.7
8.6
10.2
11.6
9.5
11.3
12.7
TPC
1.10
1.05
1.00
1.37
1.30
1.24
1.56
1.48
1.42
TC
13.5
12.6
11.8
15.7
14.6
13.7
17.3
16.1
15.1
SHC
7.8
8.9
10.0
8.1
9.5
10.8
8.9
10.5
11.9
TPC
1.19
1.13
1.08
1.47
1.40
1.34
1.68
1.60
1.53
TC
12.6
11.7
10.8
14.6
13.6
12.5
16.1
15.0
13.8
SHC
7.3
8.3
9.1
7.5
8.8
9.8
8.3
9.7
10.8
TPC
1.25
1.20
1.15
1.55
1.48
1.43
1.77
1.70
1.63
TC
11.6
10.8
9.8
13.4
12.5
11.4
14.8
13.8
12.6
SHC
6.7
7.6
8.3
6.9
8.1
8.9
7.7
8.9
9.8
TPC
1.30
1.25
1.20
1.61
1.55
1.48
1.84
1.78
1.70
IWB
(˚F)
75 85 95 105 115
MS12TN
MS15TN
MS17TN
Notes 1.IWB : Intake air wet-bulb temperature.
TC :Total Capacity (x103 Btu/h), SHC : Sensible Heat Capacity (x103 Btu/h)
TPC :Total Power Consumption (kW)
2.SHC is based on 80˚F
of indoor intake air DB temperature.
(230V)
5-1. PERFORMANCE DATA
1) COOLING CAPACITY
2) COOLING CAPACITY CORRECTIONS
OB274-11
5-2. PERFORMANCE CURVE
NOTE : A point on the curve shows the reference point.
Curves in graph of MS(MU)12/15/17TN shows curves under 230V AC.
As for curves under 208V AC, refer to PERFORMANCE DATA on page 10.
MS09TW MS12TN
MU09TW MU12TN
MS15TN MS17TN
MU15TN MU17TN
71
67
63
71
67
63
71
67
63
71
67
63
Total power consumption (kW) Total capacity ( o10 Btu/h)
Outdoor intake air DB temperature (-F) Outdoor intake air DB temperature (-F)
Indoor intake air WB temperature (
-
F)
Indoor intake air WB temperature (-F)
Indoor intake air WB temperature (-F)
Indoor intake air WB temperature (-F)
Cooling
SHF at rating condition = 0.70
= 226CFM
= 0.26
Airflow
Bypass Factor
Cooling
SHF at rating condition = 0.71
= 392CFM
= 0.17
Airflow
Bypass Factor
12
10
8
6
1.2
65 75 85 95 105 115 67 75 85 95 105 115
0.8
0.6
Total power consumption (kW) Total capacity ( o10 Btu/h)
16
14
12
10
8
2
1
1.0
71
67
63
71
67
63
71
67
63
71
67
63
Indoor intake air WB temperature (-F)
Indoor intake air WB temperature (-F)
Cooling
SHF at rating condition = 0.65
= 367CFM
= 0.22
Airflow
Bypass Factor
67 75 85 95 105 115
Total power consumption (kW) Total capacity ( o10 Btu/h)
18
16
14
12
2
1
Outdoor intake air DB temperature (-F)
Indoor intake air WB temperature (-F)
Indoor intake air WB temperature (-F)
Cooling
SHF at rating condition = 0.65
= 417CFM
= 0.22
Airflow
Bypass Factor
67 75 85 95 105 115
Total power consumption (kW) Total capacity ( o10 Btu/h)
20
18
16
14
2
1
Outdoor intake air DB temperature (-F)
OB274-12
5-3. Condensing pressure
Data is based on the condition of indoor humidity 50%.
Air flow should be set at High.
A point on the curve shows the reference point.
MU09TW
70 75 80 85 90 95 100 104( F)
40
50
60
70
80
90
100
86
80
75
70
68
Condensing pressure
Outdoor ambient temperature
(PSIG)
86
80
75
70
70 75 80 85 90 95 100 104( F)
160
180
200
220
240
260
280
300
Indoor DB temperature
Indoor DB temperature
(PSIG)
68
Suction pressure
Outdoor ambient temperature
MU12TN
104( F)
50
60
70
80
90
100
110
70 75 80 85 90 95 100
50
60
70
80
90
100
110
86
80
75
70
68
Condensing pressure
Outdoor ambient temperature
(PSIG)
86
80
75
70
70 75 80 85 90 95 100 104( F)
160
180
200
220
240
260
280
300
Indoor DB temperature
(PSIG)
Outdoor ambient temperature
Indoor DB temperature
Suction pressure
OB274-13
300
320
(PSIG)
280
260
240
220
200
180
16068 70 75 80 85 90 95 100 104( F)
Condensing pressure
Outdoor ambient temperature
Indoor DB temperature
Indoor DB temperature
(PSIG)
40
50
60
70
80
90
68 70 75 80 85 90 95 100 104( F)
Suction pressure
Outdoor ambient temperature
100
86
80
75
70
86
80
75
70
MU17TN
86
80
75
70
86
80
75
70
300
320
(PSIG)
280
260
240
220
200
180
16068 70 75 80 85 90 95 100 104( F)
Condensing pressure
Outdoor ambient temperature
Indoor DB temperature
Indoor DB temperature
(PSIG)
40
50
60
70
80
90
68 70 75 80 85 90 95 100 104( F)
Suction pressure
Outdoor ambient temperature
100
Data is based on the condition of indoor humidity 50%.
Air flow should be set at High.
A point on the curve shows the reference point.
MU15TN
OB274-14
✻ Control voltage
Power supply voltage to serial signal circuit is 12V DC.Voltage between 1+ and 2-- on in-out terminal block will be 12V DC peak.
MS09TW
INDOOR UNIT 115V 60Hz 1[,
2wires
OUTDOOR UNIT
115V
60Hz 1[, 2 wires
SIGNAL WIRE
2 wires 12V DC
• Both wirings can be applied to all MODELS.
MS09TW
INDOOR UNIT 115V 60Hz 1[,
2wires
OUTDOOR UNIT
115V
60Hz 1[, 2 wires
SIGNAL WIRE
2 wires 12V DC
115V 60Hz 1[,
2 wires
DISCONNECT
SWITCH
MS12/15/17TN
INDOOR UNIT 115V 60Hz 1[,
2wires
OUTDOOR UNIT
208/230V
60Hz 1[, 3 wires
SIGNAL WIRE
2 wires 12V DC
MS12/15/17TN
INDOOR UNIT
OUTDOOR UNIT
208/230V
60Hz 1[, 3wires
115V 60Hz 1[,
2 wires
DISCONNECT
SWITCH
SIGNAL WIRE
2 wires 12V DC
115V
• Outline of MU12TN is as same as one of MU09TW.
5-4. STANDARD OPERATION DATA
MS09TW
Cooling
8,500
0.70
0.84
MS09TW
115, 1, 60
0.035
0.34
MU09TW
115, 1, 60
0.805
6.61
0.59
245
73
182
115
52
167
25
1 Ib. 11 oz.
80
67
60
57
890
262(Wet)
95
—
640
985
Capacity
SHF
Input
INDOOR UNIT MODEL
Power supply (V, phase, Hz)
Input
Fan motor current
OUTDOOR UNIT MODEL
Power supply (V, phase, Hz)
Input
Comp. current
Fan motor current
Condensing pressure
Suction pressure
Discharge temperature
Condensing temperature
Suction temperature
Comp. shell bottom temp
Ref. pipe length
Refrigerant charge (R22)
Intake air temperature
Discharge air temperature
Fan speed (High)
Airflow (High)
Intake air temperature
Fan speed
Airflow
Unit
Btu / h
—
kW
kW
A
kW
A
A
PSIG
PSIG
˚F
˚F
˚F
˚F
ft.
—
˚F
˚F
˚F
˚F
rpm
CFM
˚F
˚F
rpm
CFM
MS15TN
Cooling
14,300/14,600
0.65
1.37/1.40
MS15TN
115, 1, 60
0.047
0.41
MU15TN
208/230, 1, 60
1.323/1.353
6.01/5.51
0.49
256
77
166
116
48
154
25
2 Ib. 14 oz.
80
67
55
54
1,200
367(Wet)
95
—
830/900
1,324/1,430
MS17TN
Cooling
15,900/16,100
0.65
1.57/1.60
MS17TN
115, 1, 60
0.054
0.47
MU17TN
208/230, 1, 60
1.516/1.546
7.01/6.41
0.49
252
77
174
114
46
160
25
3 Ib.
80
67
56
54
1,290
417(Wet)
95
—
830/900
1,288/1,394
MS12TN
Cooling
12,300/12,600
0.71
1.10/1.13
MS12TN
115, 1, 60
0.047
0.41
MU12TN
208/230, 1, 60
1.053/1.083
4.84/4.41
0.36/0.39
247
85
175
116
54
160
25
2 Ib. 9 oz.
80
67
58
56
1,200
392(Wet)
95
—
700/740
974/1,034
DB
WB
DB
WB
DB
WB
Item
Model
Total
Electrical
circuit
Refrigerant
circuit
Indoor
unit
Outdoor
unit
POWER SUPPLY
OB274-15
5-5. OPERATING RANGE
(1) POWER SUPPLY
Model
MS09TW
MS12TN
MS15TN
MS17TN
MU09TW
MU12TN
MU15TN
MU17TN
Indoor unit
Outdoor unit
Rating
115V 60Hz 1[
208/230V 60Hz 1[
Guaranteed Voltage
Min. 103V Max. 127V
115V
Min. 198V Max. 253V
208V 230V
5-6. OUTLET AIR SPEED AND COVERAGE RANGE
Model
MS09TW
MS12TN
MS15TN
MS17TN
Function
Dry
Dry
Wet
Dry
Wet
Dry
Wet
Dry
Wet
289
272
226
452
392
452
367
491
417
15.4
14.5
12.0
18.2
15.8
18.2
14.8
19.7
16.8
21.8
20.5
17.1
29.2
25.5
29.2
23.9
31.7
27.0
Air flow
(CFM) Air speed
(ft./sec.) Coverage
range (ft.)
Mode
FAN
COOL
FAN
COOL
FAN
COOL
FAN
COOL
5-7. ADDITIONAL REFRIGERANT CHARGE (R22(oz.))
Model
Outdoor unit
precharged
(up to 25ft.)
25ft.
0
30ft.
0.53
(1/2)
35ft.
1.06
(1)
Refrigerant piping length (one way)
40ft.
1.59
(3/2)
45ft.
2.12
(2)
49ft.
2.54
(5/2)
MS09TW
MS12TN
MS15TN
MS17TN
MU09TW
MU12TN
MU15TN
MU17TN
1 Ib. 11 oz.
2 Ib. 9 oz.
2 Ib. 14 oz.
3 Ib. CALCULATION : Xoz. = 0.53/ 5oz./ft. x (Additional Piping Length-25) ft.
(2) OPERATION
Function
Cooling
Standard temperature
Maximum temperature
Minimum temperature
Maximum humidity
DB (-F)
80
95
67
WB (-F)
67
71
57
Indoor
78%
DB (-F)
95
115
67
WB (-F)
–
–
–
Outdoor
–
Condition
Intake air
temperature
●The air coverage range is the figure up to the
position where the air speed is 1 ft./sec.,
when air is blown out horizontally from the
unit properly at the High speed position.
The coverage range should be used only as
a general guideline since it varies according
to the size of the room and furniture arranged
in the room.
OUTLINES AND DIMENSIONS
OB274-16
6
MS09TW
MU09TW MU12TN
INDOOR UNIT
OUTDOOR UNIT
6-3/8
3/4
2-5/16
4-5/8
3-1/4
2-5/8
3-1/16
32-3/16
33-1/2
6-1/224-3/42-1/4
1/4 or more
3-15/16
1-5/8
1/8
1-5/8
10-11/16 3/16
9-1/8
3-5/16 6-5/8
12-13/16 12-13/16
3/16
7-7/16
Air in
Air out Insulation [1-1/8
Drain hose [5/8
(Connected part O.D)
Installation plate
Wall hole [2-9/16
Indoor unit
Installation plate
Wireless remote controller
Liquid line [1/4 19-11/16
Gas line [3/8 16-15/16
Insulation [1-7/16 O.D
[13/16 I.D
{
10-15/16
4 in. or more
4 in.or more
4 in. or more
Outdoor
unit
14 in. or more
REQUIRED SPACE
16 in. or more
Unit : inch
NOTE: Do not wire 12V DC and 115V AC
in same conduit hole.
Conduit
cover
Connector
Lock nut
Service panel
Grounding
terminal
12-19/32
31/32
43-
35-
6-3/32
3-17/32
4-3/32
2-29/32
10-1/4
13/32
30-23/32
19-22/32
4-13/16
1-9/16
21-1/4
12-19/32
11-7/32
10-1/32
Service panel
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) [3/8 (MU09TW)
[1/2 (MU12TN)
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) [1/4
Airout
Air in
Air in
4-9/32
1-1/4
4-11/32
5-25/32
Drainage
3holes [1-5/16
OB274-17
MS12TN MS15TN MS17TN
MU15TN MU17TN
INDOOR UNIT
OUTDOOR UNIT
6-3/8
3/4
2-5/16
1/8 11-11/16
17-11/16
17-11/16
13-7/817-1/4
10
10-13/16
13/16
2-3/8
1-9/16
5-7/8 25-1/2 8-9/16
3/167-1/2
39-3/16
7-1/230-1/21-15/16
12-5/8
39-15/16
Wireless remote controller
4holes 7/16 O13/16 Indoor unit
Installation plate Wall hole [2-15/16
Installation plate
Liquid line [5/16 19-11/16
Gas line [1/2 16-15/16
Insulation [1-15/16 O.D
[1-1/8 I.D
Insulation [1-1/8
Drain hose [5/8
Air out
{
Air in
13-31/32
13-3/4 13/16
1-15/16
13-9/16
12-3/16
11-7/16
Drainage
hole [5/8
Drainage
3holes [1-5/16
9-3/4
3-17/32
1-3/8
Air in
Air out
Air in
23-13/16
11-1/2
13/16
19-11/16
7-3/16
2-15/16
33-7/16
6-3/16
3-15/16
1-3/16
6-5/16
30
35
Service panel
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) [1/4
Gas refrigerant
pipe joint
Rfrigerant pipe
(flared) [5/8 Conduit
cover
Connector
Lock nut
NOTE: Do not wire12V DC and
115V AC in same conduit hole.
4 in.
4 in.
4 in.
14 in.
20 in.
Unit : inch
OB274-18
7
MS09TW
MU09TW
MODEL WIRING DIAGRAM
MODEL WIRING DIAGRAM
INDOOR UNIT
OUTDOOR UNIT
VLT
2 -
1 +
TB
N
L1
BLK
YLW
RED
POWER
FROM OUTDOOR
UNIT
CONNECTING
WIRES
TO OUTDOOR
UNIT
CONNECTING
WIRE
SUPPLY
115V
1 phase
60Hz
TAB12
LD101T
TO OUTDOOR
UNIT
CONNECTING
WIRES
12V DC
NR11
TRANS
HIC1
MV POWER MONITOR,
RECEIVER
P.C.BOARD REMOTE
CONTROLLER
MF
RT11
RT12
SR141
F11 C11
ELECTRONIC CONTROL P.C. BOARD
3
2
2
1
1
5
4
3
2
6
1
1
2
3
5
CN202
3
5
151
CN
CN201
CN211
111
CN
CN
112
121
CN
RED
WHT
BRN
YLW
GRY
BLK
()
W
WA disconnect may be required by local code.
BLK
N
TB1
GRN/YLW
GROUND
POWER SUPPLY
115V
1phase 60Hz
RED
YLW
VLT
FROM INDOOR UNIT
CONNECTING
WIRES 12V DC 52C
WHT
L1
2
N
L1 RED
MC
SR
C
RED
BLK
FROM INDOOR UNIT
CONNECTING
WIRE
TB2
TO INDOOR UNIT
CONNECTING
WIRES
115V
1 Phase 60Hz
1
321
MF
COM
NO52C
C1
C2
RED
BLK
WHT
RED
WHT
WHT
BLK
BLK
–
+
NOTE:1. About the outdoor side electric wiring, refer to the outdoor unit electric wiring diagram for servicing.
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate;
:Terminal block, : Connector
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
WIRING DIAGRAM
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
SYMBOL
MV
NR11
RT11
RT12
INDOOR FAN CAPACITOR
FUSE (3A)
DC / DC CONVERTER
INDOOR FAN MOTOR (INNER FUSE)
SYMBOL
C11
F11
HIC1
MF
NAME NAME NAME
SYMBOL
SR141
TB SOLID STATE RELAY
TERMINAL BLOCK
SYMBOL
C1
C2
SYMBOL
MC
MF
SYMBOL
TB1,TB2
52C
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
COMPRESSOR (INNER PROTECTOR)
OUTDOOR FAN MOTOR (INNER PROTECTOR)
TERMINAL BLOCK
COMPRESSOR CONTACTOR
NAME NAME NAME
SG79J021H01
VG79B009H01
OB274-19
MS12TN MS15TN MS17TN MODELS WIRING DIAGRAM
MU12TN MODEL WIRING DIAGRAM
INDOOR UNIT
OUTDOOR UNIT
MF
ORN
BLK
RED
C11
NR11
ELECTRONIC CONTROL P.C. BOARD
7
3
2
1
RED
5
4
6
WHT
YLW
BLU YLW
BLU
BLK
RED
ORN
WHT
GRN/YLW
LDFM
LDFL
LDFH
LDC12
LDC11
LDCOM
YLW
BLK
8BRN
HIC1
TRANS
VLT
F11
RT11
RT12
SR144
SR142
SR143
CN201
3
21
CN202
2
1
5
MV
3
P.C.BOARD
AUTO RESTART
ASSY CONTROLLER
REMOTE
RECEIVER
53
P.C.BOARD
DISPLAY
( )
FROM OUTDOOR
1 phase
60Hz
CONNECTING
WIRE
TO OUTDOOR
UNIT
12V DC
SUPPLY
POWER
WIRES
CONNECTING
UNIT
115V BRN
L1
N
TO OUTDOOR
CONNECTING
WIRES
UNIT
TB
1+
2-
DSAR
GRN/YLW
TAB12
WA disconnect may be required by local code.
W
CN
112
CN
111
CN
151 CN
104 CN
101
CN
102
FROM INDOOR UNIT
CONNECTING
WIRE
FROM INDOOR UNIT
CONNECTING
WIRES 12V DC
TO INDOOR UNIT
CONNECTING
WIRES
115V
1 Phase 60Hz
BLU
RED
WHT
BLK
RED
C2
C1
52C
NO COM MF
123
1
GROUND GRN/YLW
TB2
TB1
BLK
RED
C
R
SMC
RED
RED
BLU
L1
L1
N
N
L2
2
WHT
POWER SUPPLY
208/230V
1phase 60Hz
52C
VLT
YLW
WHT
WHT
BLK
+
_
NOTE:1. About the outdoor side electric wiring, refer to the outdoor unit electric wiring diagram for servicing.
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate;
:Terminal block, : Connector
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
SYMBOL NAME SYMBOL NAME SYMBOL NAME
C1
COMPRESSOR CAPACITOR
MC
COMPRESSOR(INNER PROTECTOR)
TB1,TB2 TERMINAL BLOCK
C2
OUTDOOR FAN CAPACITOR
MF
OUTDOOR FAN MOTOR(INNER PROTECTOR)
52C
COMPRESSOR CONTACTOR
INDOOR FAN MOTOR (INNER FUSE)
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMISTOR
SYMBOL
MF
MV
NR11
RT11
INDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE (3A)
DC / DC CONVERTER
SYMBOL
C11
DSAR
F11
HIC1
NAME NAME NAME
SYMBOL
RT12
SR142~SR144
TB
INDOOR COIL THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
VG79B015H01
VG79B010H01
OB274-20
MU15TN MU17TN MODELS WIRING DIAGRAM
OUTDOOR UNIT
GROUND
GRN/YLW
FROM INDOOR UNIT
CONNECTING WIRES
115V
1 Phase 60Hz
TB2
TB1
FROM INDOOR UNIT
CONNECTING WIRE
BLK
RED
C
R
S
MF
ORN
RED
1234
BLU
WHT
BLK
WHT
ORN
RED
MC
RED
RED
BLK
BLU
52C
NO COM
L1
N
N
1 +
L2
2 -
1
L
WHT
POWER SUPPLY
208/230V
1phase 60Hz
C1
52C
C2
FROM INDOOR UNIT
CONNECTING
WIRES 12V DC
VLT
YLW
SG79B999H01
NOTES: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
SYMBOL
C1
C2
MC
SYMBOL
MF
TB1
TB2
SYMBOL
52C
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
COMPRESSOR (INNER PROTECTOR)
OUTDOOR FAN MOTOR (INNER PROTECTOR)
TERMINAL BLOCK
TERMINAL BLOCK
COMPRESSOR CONTACTOR
NAME NAME NAME
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