Mitsubishi Electric MFZ-KA-VA Technical Data Book page 92

NOISE CRITERION CURVES
SEZ-KD25VA(L)
External static pressure: 5Pa
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SEZ-KD25VA(L)
External static pressure: 35Pa
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than indicated level in actual use due to surrounding echoes. The sound level can be higher by
about 2 dB than the indicated level during cooling and heating operation.
NOTCH LINE
SPL(dB)
High 29
Middle 25
Low
22
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
NOTCH LINE
SPL(dB)
High 31
Middle 28
Low
24
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
SEZ-KD25VA(L)
External static pressure: 15Pa
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SEZ-KD25VA(L)
External static pressure: 50Pa
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
92
NOTCH LINE
SPL(dB)
High 30
Middle 26
Low
23
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
NOTCH LINE
SPL(dB)
High 33
Middle 29
Low
25
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000