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
OCT
A
VE B
AND SOUND PRESSURE LEVEL,
dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD71VAQ.TH
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
OCT
A
VE B
AND SOUND PRESSURE LEVEL,
dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD71VAQ.TH
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
OCT
A
VE B
AND SOUND PRESSURE LEVEL,
dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD71VAQ.TH
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
OCT
A
VE B
AND SOUND PRESSURE LEVEL,
dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD71VAQ.TH
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
