Mitsubishi Electric MR. Slim SEZ-KD25VAQ Operating manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Model name
<Indoor unit>
Model name
<Indoor unit>
SEZ-KD25VAQ
SEZ-KD35VAQ
SEZ-KD50VAQ
SEZ-KD60VAQ
SEZ-KD71VAQ
Series SEZ
2012
INDOOR UNIT
WIRED REMOTE CONTROLLER
(option)
ON/OFF
TEMP.

HWE1008B.qx 12.10.10 14:07 Page 1

1. PART NAMES AND FUNCTIONS ···········································································2
2. SPECIFICATIONS ···································································································4
3. OUTLINES AND DIMENSIONS·············································································17
4. WIRING DIAGRAM ································································································19
5. REFRIGERANT SYSTEM DIAGRAM····································································20
6. TROUBLESHOOTING ···························································································21
7. DISASSEMBLY PROCEDURE··············································································33
CONTENTS

2
1PART NAMES AND FUNCTIONS
Indoor Unit
Air outlet duct flange
Air outlet
Air inlet
● Operation buttons
Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
Wired remote controller (option)
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
Set Temperature buttons
Down
Up
Timer Menu button
(Monitor/Set button)
Mode button (Return button)
Set Time buttons
Back
Ahead
Timer On/Off button
(Set Day button)
Opening the
door
Start/Stop button
Fan Speed button
Filter button
(<return sign> button)
Test Run button
Service button (Clear button)
Airflow Up/Down button
Louver button
(Operation button)
To preceding operation
number
Ventilation button
(Operation button)
To next operation number
HWE1008B.qx 12.10.10 14:07 Page 2

3
●Display
For purposes of this explanation,
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit.
˚F˚C
˚F˚C
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
Identifies the current operation
Shows the operating mode, etc.
*Multilanguage display is sup-
ported.
“Centrally Controlled” indicator
Indicates that operation of the re-
mote controller has been prohib-
ited by a master controller.
“Timer Is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
Day-of-Week
Shows the current day of the week.
Time/Timer Display
Shows the current time, unless the simple or Auto Off
timer is set.
If the simple or Auto Off timer is set, shows the time
remaining.
“Sensor” indication
Displayed when the remote controller
sensor is used.
“Locked” indicator
Indicates that remote controller but-
tons have been locked.
“Clean The Filter” indicator
Comes on when it is time to clean the
filter.
Timer indicators
The indicator comes on if the corre-
sponding timer is set.
Up/Down Air Direction indica-
tor
The indicator shows the direc-
tion of the outcoming airflow.
“One Hour Only” indicator
Displayed if the airflow is set to
Low and downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off after one
hour, at which time the airflow di-
rection also changes.
Room Temperature display
Shows the room temperature.
Louver display
Indicates the action of the swing
louver. Does not appear if the
louver is stationary.
(Power On indicator)
Indicates that the power is on.
Fan Speed indicator
Shows the selected fan speed.
Ventilation indicator
Appears when the unit is running in
Ventilation mode.
Caution
●Only the Power on indicator lights when the unit is stopped and power supplied to the unit.
●If you press a button for a feature that is not installed in the indoor unit, the remote controller will display the “Not Available”
message.
If you are using the remote controller to operate multiple indoor units, this message will appear only if the feature is not
present at the parent unit.
●When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature indication
(For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappears then start the operation.
HWE1008B.qx 12.10.10 14:07 Page 3

4
2SPECIFICATIONS
kW
A
˚C(˚F)
Fan
Pa
kW
m3/min
mm
In.
kg
mm(in.)
A
Liquid mm(in.)
Gas mm(in.)
mm(in.)
dB<A>
Net weight
R410A
Motor output
Airflow rate(Low-Mid-High)
Motor type
External finish
Wiring
Model Name
Power source
Operation Mode
Optional parts
Remark
Document
Standard
attachment
Power input
Current
Type x Quantity
Airflow direction
Temperature set range Remote controller
Varistor
External static press
Driving mechanism
External dimension
Drain piping diameter
H x W x D
<Cooling> Indoor: 27˚CD.B./19˚CW.B. (81˚FD.B. / 66˚FW.B. Outdoor:35˚CD.B. (95˚FD.B. )
Insulation material
Air filter
Refrigerant control device
Protection devices
Note
Pipe length: 7.5m (24-9/16ft) Height difference: 0m (0ft)
2.The external static pressure is set to 15 Pa at factory shipment.
<Heating> Indoor:20˚CD.B. (68˚FD.B.) Outdoor:7˚CD.B. / 6˚CW.B. (45˚FD.B. / 43˚FW.B.)
1.Cooling/Heating capacity indicates the maximum value at operation under the following condition.
Refrigerant
piping diameter R410A
Noise level (Low-Mid-High)
(measured in anechoic room)
Heat exchanger
Terminal block
Power outlet A
Accessory
Min.size of wire
Amperage of wire breaker
19 to 30 (67 to 86) 17 to 28 (63 to 83)
230V (50Hz)
0.04
0.39
-
Sirocco fan x 2
5-15-35-50
DC blushless motor
0.096
Direct-driven
5.5-7.0-9.0
Galvanized
200 x 700 x 700
7-7/8 x 27-9/16 x 27-9/16
18
1.6 (1/8)
15
ø6.35 (ø1/4) Flare
ø9.52 (ø3/8) Flare
O.D. 32 (1-9/32)
23-26-30
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
10
Installation Manual, Instruction Book
Drain hose (flexible joint), Remote Controller
Drain Iift-up mechanism (PAC-KE07DM-E)
SEZ-KD25VAQ
19 to 30 (67 to 86) 17 to 28 (63 to 83)
Cooling Heating Cooling Heating
230V (50Hz)
0.05
0.46
-
Sirocco fan x 2
5-15-35-50
DC blushless motor
0.096
Direct-driven
7.0-9.0-11.0
Galvanized
200 x 900 x 700
7-7/8 x 35-7/16 x 27-9/16
21
1.6 (1/8)
15
ø6.35 (ø1/4) Flare
ø9.52 (ø3/8) Flare
O.D. 32 (1-9/32)
23-28-33
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
10
Installation Manual, Instruction Book
Drain hose (flexible joint), Remote Controller
Drain Iift-up mechanism (PAC-KE07DM-E)
SEZ-KD35VAQ
HWE1008B.qx 12.10.10 14:07 Page 4

5
kW
A
˚C(˚F)
Fan
Pa
kW
m3/min
mm
In.
kg
mm(in.)
A
Liquid mm(in.)
Gas mm(in.)
mm(in.)
dB<A>
Net weight
R410A
Motor output
Airflow rate(Low-Mid-High)
Motor type
External finish
Wiring
Model Name
Power source
Operation Mode
Optional parts
Remark
Document
Standard
attachment
Power input
Current
Type x Quantity
Airflow direction
Temperature set range Remote controller
Varistor
External static press
Driving mechanism
External dimension
Drain piping diameter
H x W x D
<Cooling> Indoor: 27˚CD.B./19˚CW.B. (81˚FD.B. / 66˚FW.B. Outdoor:35˚CD.B. (95˚FD.B. )
Insulation material
Air filter
Refrigerant control device
Protection devices
Note
Pipe length: 7.5m (24-9/16ft) Height difference: 0m (0ft)
2.The external static pressure is set to 15 Pa at factory shipment.
<Heating> Indoor:20˚CD.B. (68˚FD.B.) Outdoor:7˚CD.B. / 6˚CW.B. (45˚FD.B. / 43˚FW.B.)
1.Cooling/Heating capacity indicates the maximum value at operation under the following condition.
Refrigerant
piping diameter R410A
Noise level (Low-Mid-High)
(measured in anechoic room)
Heat exchanger
Terminal block
Power outlet A
Accessory
Min.size of wire
Amperage of wire breaker
19 to 30 (67 to 86) 17 to 28 (63 to 83)
230V (50Hz)
0.07
0.63
-
Sirocco fan x 3
5-15-35-50
DC blushless motor
0.096
Direct-driven
10.0-12.5-15.0
Galvanized
200 x 900 x 700
7-7/8 x 35-7/16 x 27-9/16
23
1.6 (1/8)
15
ø6.35 (ø1/4) Flare
ø12.7 (ø1/2) Flare
O.D. 32 (1-9/32)
30-34-37
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
20
Installation Manual, Instruction Book
Drain hose (flexible joint), Remote Controller
Drain Iift-up mechanism (PAC-KE07DM-E)
SEZ-KD50VAQ
19 to 30 (67 to 86) 17 to 28 (63 to 83)
Cooling Heating Cooling Heating
230V (50Hz)
0.07
0.63
-
Sirocco fan x 4
5-15-35-50
DC blushless motor
0.096
Direct-driven
12.0-15.0-18.0
Galvanized
200 x 1100 x 700
7-7/8 x 43-5/16 x 27-9/16
27
1.6 (1/8)
15
ø6.35 (ø1/4) Flare
ø15.88 (ø5/8) Flare
O.D. 32 (1-9/32)
30-34-38
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
20
Installation Manual, Instruction Book
Drain hose (flexible joint), Remote Controller
Drain Iift-up mechanism (PAC-KE07DM-E)
SEZ-KD60VAQ
HWE1008B.qx 12.10.10 14:07 Page 5

6
kW
A
˚C(˚F)
Fan
Pa
kW
m3/min
mm
In.
kg
mm(in.)
A
Liquid mm(in.)
Gas mm(in.)
mm(in.)
dB<A>
Net weight
R410A
Motor output
Airflow rate(Low-Mid-High)
Motor type
External finish
Wiring
Model Name
Power source
Operation Mode
Optional parts
Remark
Document
Standard
attachment
Power input
Current
Type x Quantity
Airflow direction
Temperature set range Remote controller
Varistor
External static press
Driving mechanism
External dimension
Drain piping diameter
H x W x D
<Cooling> Indoor: 27˚CD.B./19˚CW.B. (81˚FD.B. / 66˚FW.B. Outdoor:35˚CD.B. (95˚FD.B. )
Insulation material
Air filter
Refrigerant control device
Protection devices
Note
Pipe length: 7.5m (24-9/16ft) Height difference: 0m (0ft)
2.The external static pressure is set to 15 Pa at factory shipment.
<Heating> Indoor:20˚CD.B. (68˚FD.B.) Outdoor:7˚CD.B. / 6˚CW.B. (45˚FD.B. / 43˚FW.B.)
1.Cooling/Heating capacity indicates the maximum value at operation under the following condition.
Refrigerant
piping diameter R410A
Noise level (Low-Mid-High)
(measured in anechoic room)
Heat exchanger
Terminal block
Power outlet A
Accessory
Min.size of wire
Amperage of wire breaker
19 to 30 (67 to 86) 17 to 28 (63 to 83)
Cooling Heating
230V (50Hz)
0.10
0.84
-
Sirocco fan x 4
5-15-35-50
DC blushless motor
0.096
Direct-driven
12.0-16.0-20.0
Galvanized
200 x 1100 x 700
7-7/8 x 43-5/16 x 27-9/16
27
1.6 (1/8)
15
ø9.52 (ø3/8) Flare
ø15.88 (ø5/8) Flare
O.D. 32 (1-9/32)
30-35-40
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
20
Installation Manual, Instruction Book
Drain hose (flexible joint), Remote Controller
Drain Iift-up mechanism (PAC-KE07DM-E)
SEZ-KD71VAQ
HWE1008B.qx 12.10.10 14:07 Page 6

7
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD25VAQ
External static pressure: 15Pa High
Middle
30
SPL(dB)
26
Low 23
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD25VAQ
External static pressure: 5Pa High
Middle
29
SPL(dB)
25
Low 22
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD25VAQ
External static pressure: 50Pa High
Middle
33
SPL(dB)
29
Low 25
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD25VAQ
External static pressure: 35Pa High
Middle
31
SPL(dB)
28
Low 24
LINE
<50/60Hz>
NOTCH
NOISE CRITERION CURVES
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than displayed level under actual installation condition by surrounding echoes. The sound level
can be higher by about 2 dB than the displayed level during cooling and heating operation.
HWE1008B.qx 12.10.10 14:07 Page 7

8
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD35VAQ
External static pressure: 15Pa High
Middle
33
SPL(dB)
28
Low 23
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD35VAQ
External static pressure: 5Pa High
Middle
33
SPL(dB)
28
Low 23
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD35VAQ
External static pressure: 50Pa High
Middle
35
SPL(dB)
31
Low 25
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD35VAQ
External static pressure: 35Pa High
Middle
34
SPL(dB)
29
Low 24
LINE
<50/60Hz>
NOTCH
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than displayed level under actual installation condition by surrounding echoes. The sound level
can be higher by about 2 dB than the displayed level during cooling and heating operation.
HWE1008B.qx 12.10.10 14:07 Page 8

9
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD50VAQ
External static pressure: 15Pa High
Middle
37
SPL(dB)
34
Low 30
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD50VAQ
External static pressure: 5Pa High
Middle
36
SPL(dB)
33
Low 29
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD50VAQ
External static pressure: 50Pa High
Middle
39
SPL(dB)
36
Low 32
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD50VAQ
External static pressure: 35Pa High
Middle
38
SPL(dB)
35
Low 31
LINE
<50/60Hz>
NOTCH
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than displayed level under actual installation condition by surrounding echoes. The sound level
can be higher by about 2 dB than the displayed level during cooling and heating operation.
HWE1008B.qx 12.10.10 14:07 Page 9

10
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD60VAQ
External static pressure: 15Pa High
Middle
38
SPL(dB)
34
Low 30
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD60VAQ
External static pressure: 5Pa High
Middle
37
SPL(dB)
33
Low 29
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD60VAQ
External static pressure: 50Pa High
Middle
39
SPL(dB)
36
Low 32
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD60VAQ
External static pressure: 35Pa High
Middle
39
SPL(dB)
35
Low 31
LINE
<50/60Hz>
NOTCH
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than displayed level under actual installation condition by surrounding echoes. The sound level
can be higher by about 2 dB than the displayed level during cooling and heating operation.
HWE1008B.qx 12.10.10 14:07 Page 10

11
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD71VAQ
External static pressure: 15Pa High
Middle
40
SPL(dB)
35
Low 30
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD71VAQ
External static pressure: 5Pa High
Middle
39
SPL(dB)
34
Low 29
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD71VAQ
External static pressure: 50Pa High
Middle
42
SPL(dB)
37
Low 32
LINE
<50/60Hz>
NOTCH
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 (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD71VAQ
External static pressure: 35Pa High
Middle
41
SPL(dB)
36
Low 31
LINE
<50/60Hz>
NOTCH
NOTE: The sound level is measured in an anechoic room where
echoes are few, when compressor stops. The sound may be
bigger than displayed level under actual installation condi-
tion by surrounding echoes. The sound level can be higher
by about 2 dB than the displayed level during cooling and
heating operation.
Measurement location
2m 1m
Aux. duct
1.5m
test unit
HWE1008B.qx 12.10.10 14:07 Page 11

12
INDOOR FAN PERFORMANCE AND CORRECTED AIR FLOW
SEZ-KD25VAQ
(External static pressure 15Pa) 220-240V 50/60Hz
External static pressure (Pa)
0
10
20
30
40
50
Airflow rate(m3/min)
45678910
Middle
Low
High
Limit
Rated point
0
40
30
20
10
45678910
Airflow rate(m3/min)
External static pressure (Pa)
SEZ-KD25VAQ
(External static pressure 5Pa) 220-240V 50/60Hz
Middle
Low
High
Rated point
Limit
0
10
20
30
40
50
60
70
80
45678910
Airflow rate(m3/min)
External static pressure (Pa)
SEZ-KD25VAQ
(External static pressure 50Pa) 220-240V 50/60Hz
Middle
Low
High
Limit
Rated point
0
10
20
30
40
50
60
70
80
45678910
Airflow rate(m3/min)
External static pressure (Pa)
SEZ-KD25VAQ
(External static pressure 35Pa) 220-240V 50/60Hz
Middle
Low
High
Limit
Rated point
HWE1008B.qx 12.10.10 14:07 Page 12

13
External static pressure (Pa)
SEZ-KD35VAQ
(External static pressure 15Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
0
10
20
30
40
50
6789101112
Middle
Low
High
Limit
Rated point
0
40
30
20
10
External static pressure (Pa)
6789101112
Airflow rate(m3/min)
SEZ-KD35VAQ
(External static pressure 5Pa) 220-240V 50/60Hz
Middle
Low
High
Limit
Rated point
0
20
10
30
40
50
60
70
80
External static pressure (Pa)
Airflow rate(m3/min)
SEZ-KD35VAQ
(External static pressure 50Pa) 220-240V 50/60Hz
6789101112
Middle
Low
High
Limit
Rated point
0
20
10
30
40
50
60
70
80
External static pressure (Pa)
SEZ-KD35VAQ
(External static pressure 35Pa) 220-240V 50/60Hz
6789101112
Airflow rate(m3/min)
Middle
Low
High
Limit
Rated point
HWE1008B.qx 12.10.10 14:07 Page 13

14
External static pressure (Pa)
SEZ-KD50VAQ
(External static pressure 15Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
891011 12 13 14 15 16
0
50
40
30
20
10
High
Limit
Rated point
Middle
Low
External static pressure (Pa)
SEZ-KD50VAQ
(External static pressure 5Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
0
40
30
20
10
891011 12 13 14 15 16
Middle
Low
High
Limit
Rated point
External static pressure (Pa)
SEZ-KD50VAQ
(External static pressure 50Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
891011 12 13 14 15 16
0
10
20
30
40
50
60
70
80
Middle
Low
High
Limit
Rated point
External static pressure (Pa)
SEZ-KD50VAQ
(External static pressure 35Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
891011 12 13 14 15 16
0
10
20
30
40
50
60
70
80
Middle
Low
High
Limit
Rated point
HWE1008B.qx 12.10.10 14:07 Page 14

15
External static pressure (Pa)
SEZ-KD60VAQ
(External static pressure 15Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
910111213141516171819
0
50
40
30
20
10
Middle
Low
High
Limit
Rated point
External static pressure (Pa)
SEZ-KD60VAQ
(External static pressure 5Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
910111213141516171819
0
40
30
20
10 Middle
Low
High
Limit
Rated point
External static pressure (Pa)
SEZ-KD60VAQ
(External static pressure 50Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
910111213141516171819
0
10
20
30
40
60
70
50
80
Middle
Limit
Rated point
Low
High
External static pressure (Pa)
SEZ-KD60VAQ
(External static pressure 35Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
910111213141516171819
0
10
20
30
40
60
70
50
80
Middle
Limit
Rated point
Low
High
HWE1008B.qx 12.10.10 14:07 Page 15

16
External static pressure (Pa)
SEZ-KD71VAQ
(External static pressure 15Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
0
50
40
30
20
10
11 12 13 14 15 16 17 18 19 20 21
Middle
High
Low
Limit
Rated point
External static pressure (Pa)
SEZ-KD71VAQ
(External static pressure 5Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
0
40
30
20
10
11 12 13 14 15 16 17 18 19 20 21
Middle
Low
High
Limit
Rated point
External static pressure (Pa)
SEZ-KD71VAQ
(External static pressure 50Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
2120191817161514131211
0
10
20
30
40
50
80
70
60
Middle
Low
High
Limit
Rated point
External static pressure (Pa)
SEZ-KD71VAQ
(External static pressure 35Pa) 220-240V 50/60Hz
Airflow rate(m3/min)
0
10
20
30
40
50
80
70
60
2120191817161514131211
Middle
Low
High
Limit
Rated point
HWE1008B.qx 12.10.10 14:07 Page 16

17
OUTLINES AND DIMENSIONS
3
Unit : mm
24
20
16
900
700
500
9
7
5
1060
860
660
LJHK
{12.7
SEZ-KD71VAQ
SEZ-KD60VAQ
SEZ-KD50VAQ
SEZ-KD35VAQ
700 752 798 660 7 600 800
{15.88 {9.52
{6.35
{9.52
1198
998
AModel
SEZ-KD25VAQ
1152
952
B
1100
900
C
1060
860
D
11
9
E
1000
800
F
1200
1000
G
Air
outlet Air inlet
Terminal block
(Remote controller transmission line)
Drain pipe(O.D.{32)(Spontaneous draining)
1
Gas pipe
1Liquid pipe 2
Refrigerant piping
flare connection (gas)
2Refrigerant piping
flare connection (liquid)
Terminal block
(Indoor/outdoor connecting line)
Suspension bolt hole
4-14X30 Slot
Air filter
Control box
2XE-{2.9
2X2-{2.9
L-{2.9
Knockout hole {27
(Indoor/outdoor connecting line)
Knockout hole {27
(Remote controller transmission line)
10
170
57
15
20
100
100X(E-1)=F
30
D (Duct)
625 (Suspension bolt pitch)
90 A
23 B (Suspension bolt pitch)
C
23 677
700
25100
23
150 (Duct)
116 70
270
102
25
49
10
88
100
100XJ=K 8812
12 37 100
20 157.5
20 H
200
37
Note1.Use M10 screw for the suspension bolt (field supply).
2.Keep the service space for the maintenance at the bottom.
3.This chart indicates for SEZ-KD50VAQ model,which has 3 fans.
SEZ-KD25,35VAQ models have 2 fans.
SEZ-KD60,71VAQ models have 4 fans.
4.In case an inlet duct is used,remove the air filter(supply with
the unit), then install the filter(field supply) at suction side.
HWE1008B.qx 12.10.10 14:07 Page 17

18
Unit : mm
SEZ-KD60, 71
SEZ-KD35, 50
700 50~150 800 1300
1000
PModel
SEZ-KD25
150~250
Q
900
R
1500
1200250~3501100 1700
S
(mm)
Electric box
Ceiling
Min. 300 mm
Min. 10 mm
A
Access door 2 (450 x 450)
Ceiling beam
Intake air
Supply air
Electric box
Ceiling
Min. 20 mm
Min.10 mm
B
Ceiling beam
Access door 3
Intake air
Supply air
700
450
475 450
Q
50~150 450
450
100~200
Bottom of indoor unit
Maintenance access space
Min. 300 mm
(Viewed from the direction of
the arrow A)
Access door 2
(450 x 450)
Access door 1
(450 x 450)
P
Electric box
Access door 3
P50
R
777
450
100~200
Maintenance access space
Bottom of indoor unit
Electric box
(Viewed from the direction of
the arrow B)
Access door 1
(450 x 450)
450475
70050
Min. 300 mm
777
S
50
50 P
700
Maintenance access space
Bottom of indoor unit
Electric box
Min. 300 mm
(Viewed from the direction of
the arrow B)
Access door 4
Fig. 1
Fig. 3
Fig. 2
Fig. 4 Fig. 5
Secure enough access space to allow for the maintenance, inspection, and replacement of the motor, fan, drain pump, heat
exchanger, and electric box in one of the following ways.
Select an installation site for the indoor unit so that its maintenance access space will not be obstructed by beams or other
objects.
(1) When a space of 300 mm or more is available below the unit between the unit and the ceiling (Fig. 1)
• Create access door 1 and 2 (450 x 450 mm each) as shown in Fig. 2.
(Access door 2 is not required if enough space is available below the unit for a maintenance worker to work in).
(2) When a space of less than 300 mm is available below the unit between the unit and the ceiling (At least 20 mm of space
should be left below the unit as shown in Fig. 3.)
• Create access door 1 diagonally below the electric box and access door 3 below the unit as shown in Fig. 4.
or
• Create access door 4 below the electric box and the unit as shown in Fig. 5.
HWE1008B.qx 12.10.10 14:07 Page 18